Battery pack for supplying drive power for electrically driven processing tools and system having a battery pack

Abstract

This invention relates to a battery pack for supplying electric drive power to an electrically driven processing tool, wherein the battery pack has individual battery cells, electrical individual cell contactors, and FPC connectors; wherein the individual cell contactors are electrically connected to the individual battery cells; wherein the FPC connectors are electrically connected to the individual cell contactors by means of resistance welding connections established from above using welding electrodes; characterized in that the battery pack has individual cell retainers, wherein the individual cell retainers hold the individual battery cells, wherein the individual cell retainers are configured as welding supports for establishing resistance welding connections, wherein the individual cell retainers are arranged below the individual cell contactors and the FPC connectors; and / or the FPC connectors have conductive connector welding surfaces, wherein the connector welding surfaces extend uninterruptedly between welding points of resistance welding connections with a corresponding individual cell contactor in the individual cell contactor, wherein the individual cell contactor is arranged below the connector welding surfaces for establishing resistance welding connections.

Description

Technical Field

[0001] The present invention relates to a battery pack for supplying electric drive power to an electrically driven processing tool and a system having said battery pack. Background Technology

[0002] The present invention relates to a battery pack for supplying electric drive power to an electrically driven processing tool and a system having said battery pack. Summary of the Invention

[0003] As a task, the present invention is based on providing a battery pack for supplying drive power to an electrically driven processing tool and a system having said battery pack, which in particular have improved performance.

[0004] The present invention achieves the aforementioned task by providing a battery pack as described in the independent claims. Advantageous improvements of the invention are described in the dependent claims.

[0005] The battery pack according to the invention is specifically configured to supply electrical drive power to electrically driven processing tools. The battery pack includes individual battery cells, electrical cell contactors, and FPC connectors. The cell contactors are electrically connected to the individual battery cells. The FPC connectors are electrically connected to the cell contactors, particularly close to them, by means of resistance welding connections established from above using welding electrodes.

[0006] Additionally, the battery pack has at least one individual cell retainer. The at least one individual cell retainer holds a single battery cell in place. The at least one individual cell retainer is particularly integrally constructed as at least one weld support for establishing a resistance welded connection. The at least one individual cell retainer is spatially positioned particularly close to the individual cell contactor and the FPC connector, especially below the resistance welded connection between them.

[0007] Furthermore, as a supplementary or alternative solution, the FPC connector has a conductive connector soldering surface. This soldering surface extends uninterruptedly between solder points that are resistance-welded to a corresponding single-cell contactor in one of the single-cell contactors. In particular, the single-cell contactor is spatially positioned very close to and below the connector soldering surface to establish the resistance-welded connection.

[0008] This allows the FPC connector to be electrically connected to a single battery cell, especially by means of a single-cell contactor.

[0009] As a supplementary or alternative solution, this, especially in the case where the single cell retainer is constructed as a welding pad, enables the simplicity of establishing resistance welding connections and thus the ease of manufacturing the battery pack and / or the versatility of the single cell retainer, or the battery pack cannot have separate or additional welding supports, and thus the simple construction of the battery pack with fewer components.

[0010] Furthermore, as a supplementary or alternative solution, this, especially the case where the connector welding surface extends uninterruptedly between the welding points of the resistance welded connection with a corresponding single-cell contactor in the single-cell contactor, enables the ease and / or stability of establishing the resistance welded connection, as well as the ease and / or stability of manufacturing the battery pack and / or the simple construction of the connector welding surface and thus the FPC connector and thus the battery pack.

[0011] In particular, the concept of "battery pack" can be used as a synonym for the concept of "storage battery pack".

[0012] Battery packs can be portable or removable.

[0013] "Portable" can mean a maximum weight of 50 kg, especially 20 kg, especially 10 kg, especially 5 kg and / or a minimum weight of 0.2 kg, especially 0.5 kg, especially 1 kg, especially 2 kg, especially 0.8-1.9 kg.

[0014] The battery pack and / or individual battery cells are rechargeable.

[0015] A single battery cell can be a single, rechargeable storage element for electrochemically based electrical energy. As a supplement or alternative, a single battery cell can be a lithium-ion battery cell. Furthermore, as a supplement or alternative, the single battery cells can be identical, especially of the same type and / or of the same structure. Additionally, as a supplement or alternative, the voltage of the specific single battery cell, especially the rated voltage, can be a minimum of 2V and / or a maximum of 4V, especially 3.6V.

[0016] The power supply can be automatic.

[0017] The concepts “configured,” “set up,” or “configured,” or the English expression “programmed to perform the function / s of,” can be used as synonyms for the concept “constructed.”

[0018] The concepts “include” or “have” can be used as synonyms for the concept “possess”.

[0019] A single-cell contactor can be conductive.

[0020] A single-cell contactor can be mechanically connected to a single battery cell.

[0021] FPC connectors can be mechanically connected to single-cell contactors by means of resistance welding and / or the FPC connectors can be correspondingly fixed to the single-cell contactors.

[0022] FPC connectors cannot be cable bundles and / or battery packs cannot have cable bundles.

[0023] The terms “flexible printed circuit board” or “conductor film” can be used as synonyms for the concept of “FPC connector” (Flexible Printed Circuit, abbreviated as FPC).

[0024] The welding electrodes can be exactly two welding electrodes and / or the welding points can be exactly two welding points.

[0025] The welding electrode can be mounted on the FPC connector.

[0026] The concept “external” can be used as a synonym for the concept “above”.

[0027] The concept “directly” can be used as a synonym for the concept “adjacently”.

[0028] A single-pool contactor can be fixed to the at least one single-pool retainer.

[0029] Single-cell retainers, especially welded supports, can be electrically insulated.

[0030] At least one welded bracket can be a welded bracket and / or flat.

[0031] The concept of "welding pad" can be used as a synonym for the concept of "welding bracket".

[0032] The concept of "inside" can be used as a synonym for "below".

[0033] The concept component "connecting surface" can be used as a synonym for the concept component "welding surface".

[0034] The conceptual component “pad” can be used as a synonym for the conceptual component “surface”.

[0035] FPC connectors can have an electrically insulated base that supports the connector's soldering surface.

[0036] The connector soldering surface can be flat, a copper connector soldering surface, a molded surface, and / or not a connector soldering faceplate.

[0037] The concept of "connection point" can be used as a synonym for the concept of "welding point".

[0038] The expression "without cutting or spatial interruption" or the concept "unified" can be used as a synonym for the concept "uninterrupted".

[0039] The concept of “stretch” can be used as a synonym for “extend”.

[0040] For other aspects, refer to professional literature.

[0041] In one improved embodiment of the invention, the battery pack has a battery management system. The battery management system is configured to detect electrical measurement signals, particularly single-cell voltages, of individual battery cells. The FPC connector has at least printed electrical measurement leads. At least the printed measurement leads, single-cell contactors, and especially the connector solder surfaces provide at least one measurement connection between the battery management system and the individual battery cells, particularly one measurement connection between the battery management system and each individual battery cell. At least the printed measurement leads, single-cell contactors, and especially the connector solder surfaces are configured to at least transmit measurement signals, particularly for detecting measurement signals. In other words, at least by means of the printed measurement leads and single-cell contactors, the battery management system and the individual battery cells have at least a measurement connection to each other in order to at least transmit measurement signals. This enables the function of the FPC connector. In particular, the battery management system can be electrical, especially electrical, and / or have measurement electronics. As a supplement or alternative, detection and / or transmission can be automatic. Furthermore, as a supplement or alternative, the concept of "measurement" can be used as a synonym for the concept of "detection." Furthermore, as a supplementary or alternative solution, the measurement signal can be temperature and / or have a numerical value. Furthermore, as a supplementary or alternative solution, the single-cell voltage can be an average voltage and / or a single-cell voltage. Furthermore, as a supplementary or alternative solution, the battery management system can be configured to determine the state of charge of a single battery cell, especially a single state of charge. Furthermore, as a supplementary or alternative solution, the battery management system and the FPC connector can be completely different. Furthermore, as a supplementary or alternative solution, the FPC connector can have an electrically insulated base that can at least support the measurement printed leads. Furthermore, as a supplementary or alternative solution, the measurement printed leads can be conductive and / or copper printed leads. Furthermore, as a supplementary or alternative solution, the measurement printed leads can extend to the single-cell contactor and / or connector solder surface, respectively. Furthermore, as a supplementary or alternative solution, the measurement printed leads can be electrically connected to the connector solder surface respectively, especially by turning into each other and / or integrally formed. Furthermore, as a supplementary or alternative solution, at least the measurement printed leads can extend to the battery management system. Furthermore, as a supplementary or alternative solution, the measurement printed leads can be individually soldered to the battery management system. Additionally, as a supplementary or alternative solution, the battery management system can be mounted on a single-cell holder.

[0042] In one improvement of the invention, the FPC connector has an electrical overcurrent fuse. The overcurrent fuse is configured to, in particular, interrupt at least the measurement printed wires or measurement connections and / or to interrupt the transmission of at least the measurement signals, to protect the battery management system and, in particular, thereby protect the battery pack and / or individual battery cells from or prevent overcurrent. This allows at least short-circuit interruption. In particular, one of the overcurrent fuses can be electrically arranged between the battery management system and each individual cell contactor in the individual cell contactor.

[0043] In one improved embodiment of the invention, the single-cell contactor is an electrical single-cell connector. The single-cell connector electrically connects individual battery cells in series and / or in parallel. This enables the single-cell contactor to achieve versatility. In particular, the concept of "wiring" can be used as a synonym for the concept of "connection."

[0044] In one improvement of the invention, the single-cell contactor is rigid, particularly the single-cell contactor plate. The concept of "non-flexible" can be used as a synonym for the concept of "rigid."

[0045] In an improved embodiment of the invention, the single-cell retainer, configured as a welding bracket, extends uninterruptedly below, and particularly between, at least two single-cell contactors. The FPC connector extends discontinuously above or below, and particularly between, the two single-cell contactors. This, especially the discontinuous extension of the single-cell retainer, configured as a welding bracket, below the two single-cell contactors enables exceptional ease of establishing resistance-welded connections and / or a particularly simple construction of the battery pack with a particularly small number of components. This, especially the discontinuous extension of the FPC connector above or below the two single-cell contactors, avoids or prevents the formation of gaps between the single-cell retainer, configured as a welding bracket, and the FPC connector, thereby avoiding or preventing the formation of liquid films in said gaps and preventing bridging through liquid films, as well as short circuits between the two single-cell contactors and / or between two adjacent connector welding surfaces in the connector welding surfaces.

[0046] In one improved embodiment of the invention, the FPC connector has an electrically insulated base. The base supports the connector soldering surface at its edge. The base has a recess, particularly a window, above or below the center of the connector soldering surface, configured to establish a resistance-welded connection. A single-cell contactor is spatially arranged, particularly close to, the connector soldering surface, especially below its center and / or the recess, for establishing the resistance-welded connection. This enables exceptional ease of establishing the resistance-welded connection. The concept of "substrate" is particularly synonymous with the concept of "base."

[0047] In one improved embodiment of the invention, the connector welding surfaces for establishing resistance-welded connections particularly have a thickness of at most 150 μm and at least 18 μm, at least 35 μm, and at least 70 μm, and / or a width of at least 1.5 mm and / or at most 10 mm and at least 4 mm, and / or a length of at least 2 mm and / or at most 30 mm and at least 12 mm. As a supplementary or alternative embodiment, the conductive contactor welding surfaces of a single-cell contactor for establishing resistance-welded connections particularly have a thickness greater than 150 μm and at least 750 μm and at least 300 μm, and / or a width of at least 3 mm and / or at most 15 mm and at least 6 mm, and / or a length of at least 8 mm and / or at most 30 mm and at least 16 mm. Furthermore, as a supplementary or alternative embodiment, the electrically insulating support surfaces of at least one welding support for establishing a resistance-welded connection particularly have a thickness greater than 150 μm and at least 3 mm and at least 0.9 mm, and / or a width of at least 43 mm. This, in particular, the length and / or width, enables especially complete or full overlap and / or good support of the connector solder surfaces, contactor solder surfaces, and / or support surfaces, particularly in each direction for positioning and / or orientation tolerance compensation, and / or especially for the connector solder surfaces, contactor solder surfaces, and / or support surfaces, and / or particularly for this reason, especially the width, enables exceptional ease and / or exceptional stability in establishing resistance-welded connections. In particular, the contactor solder surface can be a spring. As a supplementary or alternative, the contactor solder surface and / or support surface can be flat.

[0048] In an improved embodiment of the invention, at least one electrically insulating support surface of a welding bracket, particularly at least one wall of at least a single-cell retainer, extends uninterruptedly below the resistance welded connection, extending further than between the weld points, particularly parallel to the single-cell contactor and the FPC connector. The length of the support surface is at least, particularly exactly, the same as the length of the connector welding surface and / or the conductive contactor welding surface of the single-cell contactor used to establish the resistance welded connection. The width of the support surface is at least, particularly exactly, the same as the width of the connector welding surface and / or the contactor welding surface. This enables particularly complete or full overlap and / or good support of the connector welding surface, contactor welding surface, and / or support surface, particularly in each direction, and thereby achieves exceptional ease and / or exceptional stability in establishing the resistance welded connection. In particular, at least one wall can be multiple walls.

[0049] In an improved embodiment of the invention, the single-cell contactor has conductive contactor welding surfaces for establishing a resistance-welded connection. The contactor welding surfaces extend uninterruptedly, particularly parallel to the FPC connector, at least, and especially just between corresponding connector welding surfaces, below the resistance-welded connection. The length of the contactor welding surfaces is at least, and especially just, the same as the length of the connector welding surfaces. The width of the contactor welding surfaces is at least, and especially just, the same as the width of the connector welding surfaces. This enables, particularly in each direction, positioning and / or orientation tolerance compensation and / or particularly complete or full overlap of the connector welding surfaces and contactor welding surfaces, thereby achieving exceptional ease and / or exceptional stability in establishing the resistance-welded connection.

[0050] In an improved embodiment of the invention, the FPC connector has at least one recess, particularly a through hole. The at least one recess is configured to receive positioning and / or orienting devices, particularly from above, to position and / or orient the FPC connector relative to the single-cell retainer, thereby establishing a resistance-welded connection. This allows the FPC connector to be kept low or flat, or to not bend upwards or protrude in an unbent manner, and / or this thereby enables a particularly simple and / or particularly good establishment of the resistance-welded connection. In particular, the recess can be circular or non-circular, particularly square. As a supplement or alternative, the receiving portion can be partially temporary, either during the establishment of the resistance-welded connection or temporally with the establishment of the resistance-welded connection and subsequently no longer present. Furthermore, as a supplement or alternative, the received positioning and / or orienting device can be supported at least on the single-cell retainer. Furthermore, as a supplement or alternative, the expression "for spatial arrangement" can be used as a synonym for the expression "for positioning and / or orienting." In addition, as a supplementary or alternative solution, the battery management system, particularly the system circuit board of the battery management system, has another opening, particularly another through hole, for positioning and / or orienting the battery management system. This allows for better positioning and / or orienting of the battery management system together with the FPC connector.

[0051] In one improved embodiment of the invention, the FPC connector is configured to be slightly elongated and is fixed by means of its longitudinal ends for establishing a resistance-welded connection. The resistance-welded connection is spatially arranged between the longitudinal ends.

[0052] In particular, the FPC connector is fixed at its first longitudinal end by means of the battery management system of the battery pack. As a supplementary or alternative solution, the FPC connector is fixed at its second longitudinal end by means of at least one electrical group data contact of the battery pack, particularly a plug connector. This enables simple manufacturing and / or good construction of the battery pack. The concept of "elongated" can be used as a synonym for the concept of "slightly elongated." As a supplementary or alternative solution, the length of the FPC connector can be greater than the width and / or thickness of the FPC connector. Furthermore, as a supplementary or alternative solution, "fixed" can mean "mechanically fixed." Furthermore, as a supplementary or alternative solution, the concept of "positioned" can be used as a synonym for the concept of "fixed." Furthermore, as a supplementary or alternative solution, the FPC connector can be fixed to the system circuit board of the battery management system. Furthermore, as a supplementary or alternative solution, the group data contact can be fixed to the contact plate of the battery pack, which in turn can be fixed to the single-cell retainer. Furthermore, as a supplementary or alternative solution, the battery management system can be configured to send data to and / or receive data from the processing apparatus. Group data contacts can be configured to contact electrical apparatus data contacts of the processing apparatus. The FPC connector can have at least one printed electrical data conductor. At least one printed data conductor can provide at least an electrical data connection between the battery management system and the group data contacts. At least one printed data conductor can be configured to transmit data, particularly for sending and / or receiving data.

[0053] In one improved embodiment of the invention, the battery pack has a particularly rectangular single-cell block. The single-cell block contains a single battery cell. The direction from top to bottom is toward the single-cell block. As a supplementary or alternative, the connector soldering surface is arranged spatially at least, particularly just above, the side of the single-cell block, particularly parallel to that side, particularly the circumferential side. This enables a particularly space-saving construction of the battery pack. The concept of "single-cell assembly" can be used as a synonym for the concept of "single-cell block." As a supplementary or alternative, the single-cell block can be parallelepiped. Furthermore, as a supplementary or alternative, the FPC connector can extend, particularly with at least electrical measured printed wires, at least on the first circumferential side of the single-cell block, in a range greater than 50%, particularly at least 75%, particularly 100% of the section from the first end of the circumferential side to the second end of the circumferential side. The circumferential side or the first end can be adjacent to the first end side of the single-cell block. The circumferential side or second end of the block can be adjacent to the second end side of the single-cell block. The second end side can be opposite the first end side. In particular, the connector solder surface and / or the single-cell contactor can be arranged spatially along a segment, particularly from the first end to the second end. Furthermore, as a supplementary or alternative, the FPC connector can have a particularly flexible connector circuit board. The connector circuit board can be arranged spatially with its connector board plane above the circumferential side of the block, particularly parallel to the circumferential side of the block. Furthermore, as a supplementary or alternative, the concept of "outer side" can be used as a synonym for the concept of "circumferential side of the block". Furthermore, as a supplementary or alternative, the concept of "end side" can be used as a synonym for the concept of "end side of the block". Furthermore, as a supplementary or alternative, the battery management system can be arranged spatially, particularly completely and / or just above the first end side, particularly at a particular location. In particular, the battery management system can have at least, particularly just, a particularly rigid system circuit board. The system circuit board can be arranged spatially with its system board plane parallel to the first end side of the block. Furthermore, as a supplementary or alternative solution, the group data contacts can be arranged spatially, particularly completely and / or just above the second end side, especially at a certain location. Additionally, as a supplementary or alternative solution, the single-cell block, especially its cuboid shape, can be formed by at least a single-cell retainer and, in particular, the held-up battery cell.

[0054] In an improved embodiment of the invention, the battery cell is, in particular, a slightly elongated circular cell. Each circular cell has a cell terminal on its opposite end side. Specifically, the circular cells are arranged spatially parallel to each other along their longitudinal axes in at least one common cell plane. Furthermore, the circular cells are arranged spatially with their longitudinal axes parallel to the circumferential side of the block. The conceptual component "contact" can be used as a synonym for the conceptual component "terminal." As a supplementary or alternative embodiment, the cell terminals can be arranged spatially along a segment, particularly from the first end to the second end.

[0055] In one improved embodiment of the invention, the battery pack has a housing. A single battery cell, a single-cell contactor, an FPC connector, and at least one single-cell retainer are spatially arranged within the housing. The at least one single-cell retainer has at least one retaining member. The at least one retaining member holds the single battery cell. The at least one single-cell retainer has at least one spacing retaining protrusion such that the housing and the at least one retaining member together form a spacing. The FPC connector is spatially arranged in at least one connector space provided by the spacing. This prevents shearing at the single-cell contactor when arranged within the housing. In particular, the housing can be an external housing. As a supplementary or alternative, the housing cannot have a spacing retaining protrusion. Furthermore, as a supplementary or alternative, the retaining member and the spacing retaining protrusion are integrally or integrally formed with each other. Furthermore, as a supplementary or alternative, the spacing retaining protrusion can project from the retaining member downwards. Furthermore, as a supplementary or alternative, the FPC connector can be spatially arranged above the retaining member and / or below the housing. Furthermore, as a supplementary or alternative, the conceptual component "lug" or "raised portion" can be used as a synonym for the conceptual component "protrusion." Furthermore, as a supplementary or alternative, the concepts "free space" or "cavity" can be used as a synonym for the concept "connector space." Furthermore, as a supplementary or alternative, the expression "extension" can be used as a synonym for the expression "arranged in space." Furthermore, as a supplementary or alternative, the spacing can be greater than zero.

[0056] In an improved embodiment of the invention, the battery pack has a housing. Individual battery cells, cell contactors, and FPC connectors are spatially arranged within the housing. The housing has guide slots. These guide slots are configured to extend side-by-side to guide the battery pack for mechanical connection to a processing tool. The FPC connectors, and especially the resistance-welded connections therebetween, are spatially arranged only between the guide slots and not beside them. This allows for a space-saving configuration of the battery pack. Specifically, the guide slots can be accessed from the outside of the housing, can be slightly elongated recesses within the housing, and / or cannot be outward protrusions, especially not outward tracks. As a supplementary or alternative embodiment, the housing can have guide slots on exactly one housing side, particularly the first housing circumferential side. Furthermore, as a supplementary or alternative embodiment, the expression "parallel to each other" can be used as a synonym for the concept "side-by-side." Additionally, as a supplementary or alternative embodiment, the FPC connectors and guide slots can extend parallel to each other. Furthermore, as a supplementary or alternative solution, the FPC connector can be spatially arranged inside the gap between the guide slots and not outside the gap. Furthermore, as a supplementary or alternative solution, the FPC connector can have a maximum width of 100 mm, particularly 47 mm, and a minimum width of 10 mm, particularly 3.5 mm. Furthermore, as a supplementary or alternative solution, the FPC connector can have a particularly flexible connector circuit board. The connector board plane of the connector circuit board can correspond to, and is particularly equivalent to, the slot plane defined by the guide slots.

[0057] The system according to the invention has a battery pack as mentioned above and a charging device, particularly the aforementioned processing tool and / or an electric charging device. The charging device is configured to supply charging power to the battery pack. In particular, the system, processing tool, and / or charging device can be portable. As a supplement or alternative, the processing tool can be a processing tool and / or, in particular, an electric drive motor for driving the processing tool. In particular, the driving power can be used to drive the motor. Furthermore, as a supplement or alternative, the processing tool can be ground-guided and / or hand-guided, especially handheld and / or can be a garden-, forest-, construction-, and / or land (cultivation) processing tool. In particular, the processing implements can be saws, especially chainsaws, or high-branch pruners, or hedge trimmers, or hedge cutters, or shrub trimmers, or pruning shears, or cutting machines, or blowers, or leaf blowers, or suction devices, or leaf suction machines, or cleaning devices, or pressure washers, or sweepers, or sweeper rollers, or sweeper brushes, or lawnmowers, or lawn mowers, or free-cutting machines, or soil tillers. Furthermore, as a supplementary or alternative, the battery pack and the processing implements and / or charging equipment can be configured for easy, tool-free, and / or damage-free removable, electrical and / or mechanical interconnection, especially by the user. Furthermore, as a supplementary or alternative, the battery pack and the processing implements and / or charging equipment can be configured to carry the battery pack via the processing implements and / or charging equipment and / or for removing and / or replacing the battery pack. In particular, the processing implements and / or charging equipment can have a battery well, which can be configured to receive the battery pack. Furthermore, as a supplementary or alternative solution, power supply can be automatic. Attached Figure Description

[0058] Other advantages and aspects of the invention will become apparent from the claims and from the description of embodiments of the invention, which will be explained below with reference to the accompanying drawings. Hereinafter: Figure 1 A perspective view of a battery pack according to the invention for supplying drive power to an electrically driven machining tool, without the pack housing, is shown. Figure 2 This shows a circumferential side view of the first block of a single cell block in a battery pack; Figure 3 The battery management system and FPC connector of the battery pack are shown in the view of the outer or upper side. Figure 4 A view of the battery management system and FPC connector of the battery pack is shown, with the inner side facing the outer side. Figure 5 Another view of the inner side of the FPC connector is shown; Figure 6A perspective view of the battery pack is shown without a battery management system and without FPC connectors. Figure 7 The image shows a view of the first circumferential side of a single cell block without a battery management system and without an FPC connector. Figure 8 A perspective view of the electrical single-cell connector of the battery pack is shown; Figure 9 This shows a view of the FPC connector fixed on one of the single-pool connectors in a single-pool connector; Figure 10 A perspective view of a single-cell retainer of the battery pack is shown; Figure 11 A perspective view of the contact plate of the battery pack is shown; Figure 12 A view of the second circumferential side of a single pool block together with the housing cover of the housing assembly is shown, wherein the second circumferential side is opposite to the first circumferential side; Figure 13 A view of the second end of a single pool block is shown; Figure 14 A cross-sectional view of the battery pack and its housing is shown. Figure 15 This shows a view of the second end of a single pool block, without any part of the shell container. Figure 16 A view showing the second end of a single pool block together with the second end of the housing or the housing of the housing group is shown. Figure 17 A view of the first housing end side of the housing assembly is shown, wherein the first housing end side is opposite to the second housing end side; Figure 18 A view of the first housing circumferential side of the housing assembly is shown; Figures 19 to 21 At least one view of at least one additional circumferential side of the housing assembly is shown; and Figure 22 A schematic diagram of a system according to the invention is shown, the system having a battery pack, a processing tool, and an electrical charging device for supplying power to the battery pack. Detailed Implementation

[0059] Figure 1 , 2 Pages 6, 7, 9, and 12 to 22 show a battery pack 1 according to the invention. The battery pack 1 is configured to supply electrical drive power AL to an electrically driven processing tool 2, particularly to the processing tool itself, as shown in... Figure 22As shown in the diagram. Battery pack 1 has individual battery cells 7, electrical single-cell contactors 23, and FPC connectors 6, as shown in... Figures 3 to 5 As shown in Figure 8, the single-cell contactor 23 is electrically connected to the single-cell battery 7. The FPC connector 6 is electrically connected to the single-cell contactor 23 by means of a resistance-welded connection WV established from above using welding electrodes 24.

[0060] Additionally, the battery pack 1 has at least one single-cell retainer 12, such as in Figure 10 As shown in the diagram. The at least one single-cell retainer 12 holds the battery cell 7. The at least one single-cell retainer 12 is configured as at least one welding bracket 25 for establishing a resistance welded connection WV. The at least one single-cell retainer 12 is spatially arranged below the single-cell contactor 23 and the FPC connector 6.

[0061] Furthermore, as a supplementary or alternative solution, the FPC connector 6 has a conductive connector solder surface 26, as shown in... Figure 9 As shown in the diagram, the connector soldering surface 26 extends uninterruptedly between solder points 27 of the resistance-welded connection WV of a corresponding single-pool contactor 23. In particular, the single-pool contactor 23 is spatially arranged below the connector soldering surface 26 to establish the resistance-welded connection WV.

[0062] Figure 22 A system 100 according to the invention is shown. The system 100 has a battery pack 1 and, in particular, the processing tool 2 and / or an electrical charging device 3. The charging device 3 is configured to supply a charging power LL to the battery pack 1, in particular, a charging power to the battery pack.

[0063] In the illustrated embodiment, the battery pack 1 has exactly four single-cell retainers 12. In alternative embodiments, the battery pack can have exactly one, exactly two, exactly three, or at least five single-cell retainers.

[0064] In detail, battery pack 1 has a battery management system 5, such as in Figures 1 to 4 As shown in Figure 22, the electromagnetic management system 5 is configured to detect, in particular, the electrical measurement signal 7U of a single battery cell 7, especially the single-cell voltage. The FPC connector 6 has at least electrical measurement printed leads 8. The at least measurement printed leads 8 and the single-cell contactor 23 provide at least a measurement connection MV between the battery management system 5 and the single battery cell 7. The at least measurement printed leads 8 and the single-cell contactor 23 are configured to transmit, in particular, the at least measurement signal 7U.

[0065] In the illustrated embodiment, the battery pack 1 has eleven single-cell contactors 23, and / or the FPC connector 6 correspondingly and similarly has eleven measurement printed leads 8. In alternative embodiments, the battery pack can have fewer or more than eleven single-cell contactors, and / or the FPC connector can correspondingly and similarly have fewer or more than eleven measurement printed leads.

[0066] In addition, the single-cell contactor 23 is an electrical single-cell connector 14. The single-cell connector 14 electrically connects the individual battery cells 7 in series and / or in parallel to each other.

[0067] Furthermore, the single-cell contactor 23 is rigid, especially the single-cell contactor plate 28.

[0068] Furthermore, the single-pool retainer 12, configured as a welding bracket 25, extends uninterruptedly below at least two of the single-pool contacts 23. The FPC connector 6 extends discontinuously above or below two of the single-pool contacts 23, as in... Figures 3 to 5 Arrow P1 is used to depict the same embodiment as the alternative solution.

[0069] In addition, the FPC connector 6 has an electrically insulated base 29, as in Figure 9 As shown in the diagram. Base 9 has a connector soldering surface 26 at its edge 26R. Base 29 has a clearance 30, particularly a window 31, below or above its center 26M for establishing a resistance-welded connection WV. A single-pool contactor 23 is spatially arranged below the connector soldering surface 26 for establishing the resistance-welded connection WV.

[0070] Furthermore, the connector welding surface 26 used to establish the resistance welded connection WV has a thickness 26D of a maximum of 150 μm and a particularly minimum of 18 μm, a particularly minimum of 35 μm, and a particularly minimum of 70 μm, and / or a minimum of 1.5 mm and / or a maximum of 10 mm and a particularly minimum of 4 mm, and / or a minimum of 2 mm and / or a maximum of 30 mm and a particularly minimum of 12 mm, as in Figure 9 and 14 As shown in the diagram. As a supplementary or alternative, the conductive contactor welding surface 32 of the single-pool contactor 23 for establishing the resistance-welded connection WV has a thickness 32D greater than 150 μm and particularly a maximum of 750 μm, particularly 300 μm, and / or a minimum of 3 mm and / or a maximum of 15 mm, particularly 6 mm, a width 32B and / or a minimum of 8 mm and / or a maximum of 30 mm, particularly 16 mm, as shown in the diagram. Figure 8 and 9As shown in the diagram. Furthermore, as a supplementary or alternative, the support surface 33 for establishing the electrical insulation of at least one welding support 25 for establishing the resistance welded connection WV has a thickness 33D greater than 150 μm, and particularly a maximum of 3 mm, particularly 0.9 mm, and / or a width 33B of a maximum of 43 mm, as shown in the diagram. Figure 9 and 10 As shown in the image.

[0071] Furthermore, the electrically insulating support surface 33 of at least one welding bracket 25, and in particular at least one wall 34 of the at least one single-cell retainer 12, extend uninterruptedly below the resistance welded connection WV more than between the welding points 27. Specifically, the length 33L of the support surface 33 and the lengths 26L and 32L of the connector welding surface 26 and / or the conductive contactor welding surface 32 of the single-cell contactor 23 used to establish the resistance welded connection WV are at least the same. Specifically, the width 33B of the support surface 33 and the widths 26B and 32B of the connector welding surface 26 and / or the contactor welding surface 32 are at least the same.

[0072] Furthermore, the single-cell contactor 23 has a conductive contactor welding surface 32 for establishing a resistance-welded connection WV. The contactor welding surface 32 extends uninterruptedly below the resistance-welded connection WV, at least between corresponding connector welding surfaces 26. Specifically, the length 32L of the contactor welding surface 32 and the length 26L of the connector welding surface 26 are at least the same. Specifically, the width 32B of the contactor welding surface 32 and the width 26B of the connector welding surface 26 are at least the same.

[0073] Furthermore, the FPC connector 6 has at least one opening 35, particularly a through hole 36, such as in Figures 1 to 5 As shown in the diagram. The at least one clearance 35 is configured to receive positioning and / or orientation devices for positioning and / or orienting the FPC connector 6 relative to the single-pool contactor 23 in order to establish a resistance-welded connection WV.

[0074] In the illustrated embodiment, the FPC connector 6 has exactly two empty portions 35. In alternative embodiments, the FPC connector may have exactly one empty portion or at least three empty portions.

[0075] Furthermore, the FPC connector 6 is constructed in a slightly elongated shape and is secured by means of its longitudinal ends 6E1, 6E2, particularly for establishing resistance-welded connections WV, such as in Figures 1 to 5As shown in 12, 13, 15, 16, 19, and 22, the resistance-welded connection WV is spatially arranged, particularly between the longitudinal ends 6E1 and 6E2. Specifically, the FPC connector 6 is secured at its first longitudinal end 6E1 by means of the battery management system 5 of the battery pack 1. As a supplementary or alternative, the FPC connector 6 is secured at its second longitudinal end 6E2 by means of at least one electrical group data contact 17 of the battery pack 1, particularly the FPC connector 6.

[0076] In the illustrated embodiment, the battery pack 1 has exactly two group data contacts 17. In an alternative embodiment, the battery pack may have exactly one group data contact or at least three group data contacts.

[0077] Furthermore, the battery pack 1 has a particularly rectangular single cell block 4, such as in Figure 1 , 2 As shown in Figures 6, 7, 12, and 14. The single-cell block 4 has a single battery cell 7. The direction from top to bottom is the -z direction towards the single-cell block 4. As a supplementary or alternative, the connector soldering surface 26 is arranged spatially at least, and especially just on the block side 4BU1 of the single-cell block 4, parallel to the block side 4BU1, particularly the circumferential side 4BU1.

[0078] In addition, the battery pack 1 has a housing 37, such as in Figures 14 to 22 As shown in the diagram, a single battery cell 7, a single cell contactor 23, an FPC connector 6, and the at least one single cell retainer 12 are spatially arranged in the assembly housing 37. The at least one single cell retainer 12 has at least one retainer 38, as shown in... Figure 1 , 2 As shown in 6, 7, 10, 14, and 15. The at least one retainer 38 holds the battery cell 7. The at least one cell retainer 12 has at least one pitch retaining protrusion 39 such that the housing 37 together with the at least one retainer 38 forms a pitch 40. The FPC connector 6 is spatially arranged in at least one connector space 41 provided by means of the pitch 40.

[0079] Furthermore, the battery pack 1 has a housing 37. Individual battery cells 7, individual cell contactors 23, and FPC connectors 6 are spatially arranged within the housing 37. The housing 37 has guide slots 42, such as in... Figure 14 and 18 As shown in the diagram, guide slots 42 are arranged side-by-side to guide, in particular, the battery pack 1, for mechanical connection with the processing tool 2. FPC connectors 6 are spatially arranged between the guide slots 42 and not beside them.

[0080] In addition, the rated voltage of the battery pack 1 is a minimum of 10V, a minimum of 18V and / or a maximum of 100V, a maximum of 72V, and a maximum of 36V.

[0081] As a supplementary or alternative option, the maximum driving power AL and / or the maximum charging power LL, especially the continuous power or peak power, is a minimum of 10 watts (W), a minimum of 100W, a minimum of 1kW (kW), a minimum of 2kW and / or a maximum of 10kW, a maximum of 5kW, a maximum of 4kW, or a maximum of 3kW.

[0082] In addition, as a supplementary or alternative option, the maximum, especially the rated energy content of the battery pack 1 is a minimum of 10 Wh (watt-hours), a minimum of 100 Wh, a minimum of 200 Wh and / or a maximum of 4000 Wh, a maximum of 2000 Wh, a maximum of 1000 Wh, a maximum of 500 Wh, or a maximum of 340 Wh.

[0083] In addition, as a supplementary or alternative, the battery pack 1 has a height or thickness of at least 2.5 cm and / or at most 10 cm, especially 5 cm, along direction z and / or a width of at least 5 cm and / or at most 20 cm, especially 10 cm, along direction y and / or a depth or length of at least 7.5 cm and / or at most 30 cm, especially 15 cm, along direction x.

[0084] As clearly demonstrated in the illustrations and the embodiments explained above, the present invention provides an advantageous battery pack for supplying electric drive power to an electrically driven processing tool, and an advantageous system having said battery pack, which have improved performance.

[0085] Furthermore, as a supplementary or alternative, regarding the claims mentioned below "Patent Claims," ​​the claims can be: 1. A battery pack (1) for supplying drive power (AL) to an electrically driven processing tool (2). -The battery pack (1) wherein the battery pack (1) has a particularly rectangular single cell block (4), a battery management system (5) and an FPC connector (6). -The single cell block (4) therein has a single battery cell (7). -The battery management system (5) is configured to detect the electrical measurement signal (7U) of a single battery cell (7), particularly the single cell voltage; and -The FPC connector (6) wherein the FPC connector (6) has at least electrical measurement printed wires (8). - Wherein at least the measurement printed leads (8) provide at least an electrical measurement connection (MV) between the battery management system (5) and the individual battery cells (7); and -In which at least the measurement printed wire (8) is configured to transmit at least the measurement signal (7U); -The FPC connector (6) wherein the FPC connector (6) has an electrical overcurrent fuse (9) configured to at least interrupt the measurement of the printed conductors (8), and particularly to protect the battery management system (5) from overcurrent; and -The FPC connector (6) extends at least 50%, especially 100%, over a section (4S) on the first circumferential side (4BU1) of the single pool block (4) from the first end (E1) of the circumferential side (4BU1) adjacent to the first end side (4BS1) of the single pool block (4) to the second end (E2) of the circumferential side (4BU1) adjacent to the second end side (4BS2) of the single pool block (4), wherein the second end side (4BS2) is opposite to the first end side (4BS1).

[0086] 2. The battery pack (1) according to claim 1. -The FPC connector (6) extends uninterruptedly from the block circumferential side (4BU1) of the single pool block (4) to the second block end side (4BS2) and especially to the second block circumferential side (4BU2), wherein the second block circumferential side (4BU2) is opposite to the first block circumferential side (4BU1), and / or extends uninterruptedly, especially from the first block end side (4BS1) to the first block circumferential side (4BU1).

[0087] 3. The battery pack (1) according to claim 1 or 2. -The battery management system (5) is spatially arranged on the first end block (4BS1); -In particular, the battery management system (5) has at least one particularly rigid system circuit board (13) arranged in space with its system board plane (13E) parallel to the first end side (4BS1).

[0088] 4. The battery pack (1) according to any one of claims 1 to 3. -The FPC connector (6) is fixed to the battery management system (5), and in particular, at least the measuring printed wires (8) are soldered to the battery management system (5).

[0089] 5. The battery pack (1) according to any one of claims 1 to 4. -The battery pack (1) has an electrical single-cell connector (14), in particular a single-cell connector board (15), which electrically connects the battery cells (7) in series and / or in parallel to each other, wherein the FPC connector (6) is correspondingly fixed to the single-cell connector (14), and in particular the measuring printed wires (8) are respectively material-locked to the single-cell connector (14), in particular resistively soldered together.

[0090] 6. The battery pack (1) according to any one of claims 1 to 5. -The overcurrent fuse (9) therein is a printed wire fuse (16) formed integrally by measuring the printed wire (8).

[0091] 7. The battery pack (1) according to claim 6. -In particular, the printed conductor fuse (16) has no tapering portion, especially no width variation and / or thickness variation and / or no tortuous structure.

[0092] 8. The battery pack (1) according to any one of claims 1 to 7. - wherein at least the measuring printed conductor (8), especially the printed conductor fuse (16), has a width (8B) of at least 50 μm, especially at least 150 μm and / or a maximum of 500 μm, especially 300 μm and / or a thickness (8D) of at least 18 μm, especially at least 35 μm and / or a maximum of 150 μm, especially 70 μm and / or a length (8L) of at least 5 mm, especially at least 10 mm; and / or -The overcurrent fuse (9) has an interruption current value (9W), wherein the interruption current value (9W) is a maximum of 25A, particularly a maximum of 12.5A, and / or wherein the interruption current value (9W) is less than the rated current value (NW) of the drive power (AL), particularly wherein the interruption current value (9W) is less than 50% of the rated current value (NW), particularly less than 25% of the rated current value.

[0093] 9. The battery pack (1) according to any one of claims 1 to 8. - One of the overcurrent fuses (9) is configured to interrupt one of the measuring printed conductors (8) based on the reference ground potential (GND).

[0094] 10. The battery pack (1) according to any one of claims 1 to 9. -The battery management system (5) is configured to send data (DA) to the processing apparatus (2) and / or receive data (DA) from the processing apparatus (2); -The battery pack (1), in particular the FPC connector (6), has at least one electrical group data contact (17), in particular a plug connector (18), which is configured to contact the electrical appliance data contact of the processing tool (2); and -The FPC connector (6) wherein the FPC connector (6) has at least one electrical data printed wire (19). - wherein at least one data printed conductor (19) provides at least one electrical data connection (DV) between the battery management system (5) and the group data contact (17); and - wherein at least one data printed conductor (19) is configured to transmit data (DA).

[0095] 11. The battery pack (1) according to any one of claims 1 to 10. -The FPC connector (6) wherein the FPC connector (6) has a connector recess (20), and in particular a connector hole (21), which is configured to allow cooling air (22) to flow through the battery cell (7), wherein at least one of the measurement printed wires and / or the data printed wire (19) extends at least to the connector recess (20).

[0096] 12. The battery pack (1) according to any one of claims 1 to 11. - wherein at least the measuring printed conductors (8) have a minimum spacing (8A) of at most 2 mm, particularly at most 500 μm, particularly 300 μm between each other; and / or -The FPC connector (6) therein has a minimum width (6B) of up to 10 mm, especially 3.5 mm.

[0097] 13. A system (100) having: - The battery pack (1) according to any one of claims 1 to 12; and - Processing apparatus (2) and / or an electrical charging device (3) configured to supply power (LL) to the battery pack (1).

[0098] Furthermore, as a supplementary or alternative, regarding the claims mentioned below "Patent Claims," ​​the claims can be: 1. A battery pack (1) for supplying drive power (AL) to an electrically driven processing tool (2). -The battery pack (1) wherein the battery pack (1) has a single battery cell (7), an FPC connector (6) and a pack housing (37). -The FPC connector (6) is electrically connected to a single battery cell (7); and - wherein the battery cell (7) and the FPC connector (6) are spatially arranged in the housing (37); Its features are, - The housing (37) has guide slots (42) that are arranged side-by-side to guide the battery pack (1) for mechanical connection with a processing tool (2), wherein the FPC connector (6) is spatially arranged between the guide slots (42) and not beside the guide slots (42), and / or - The battery pack (1) has at least one single cell retainer (12), wherein the at least one single cell retainer (12) is spatially arranged in the pack housing (37), wherein the at least one single cell retainer (12) has at least one retainer (38), wherein the at least one retainer (38) holds a single battery cell (7), and wherein the at least one single cell retainer (12) has at least one pitch retaining protrusion (39), such that the pack housing (37) and the at least one retainer (38) together form a pitch (40), wherein the FPC connector (6) is spatially arranged in at least one connector space (41) provided by means of the pitch (40).

[0099] 2. The battery pack (1) according to claim 1. -The battery pack (1) has a power bus (43) configured to transmit drive power (AL), wherein the power bus (43) is spatially arranged in the pack housing (37), and wherein the power bus (43) extends beside the FPC connector (6) and / or below one of the guide slots (42) in the guide slots (42).

[0100] 3. The battery pack (1) according to claim 1 or 2. -The battery pack (1) has at least one electrical group power contact (44), particularly a plug connector (45), wherein the group power contact (44) is configured to contact the electrical appliance power contact of the processing instrument (2) to transmit drive power (AL), and / or the battery pack (1), particularly the FPC connector (6), has at least one electrical group data contact (17), particularly a plug connector (18), wherein the group data contact (17) is configured to contact the electrical appliance data contact of the processing instrument (2) to transmit data (DA) between the battery pack (1) and the processing instrument (2); and -The battery pack (1) has a contact plate (46) arranged in space in the housing (37), the contact plate (46) has a carrier (47) that carries a power contact (44) and / or a data contact (17), and the contact plate (46) has at least one spacing retaining protrusion (39) such that the housing (37) and the carrier (47) together form a spacing (40).

[0101] 4. The battery pack (1) according to any one of claims 1, 2 or 3. -The at least one single pool retainer (12) and, in particular, the contact plate (46) have a notch (48), in which the guide groove (42) and, in particular, the power bus (43) are spatially arranged.

[0102] 5. The battery pack (1) according to any one of claims 1 to 4. - wherein at least one of the spacing protrusions (39) and / or the connector space (41) is spatially arranged between the guide slots (42) and not beside the guide slots (42); and / or - wherein the FPC connector (6) and / or the connector space (41) are spatially arranged between the spacing retaining protrusions (39) and not arranged next to the spacing retaining protrusions (39).

[0103] 6. The battery pack (1) according to any one of claims 1 to 5. -The housing (37) has a housing container (49) having an inlet (50) through which the battery cell (7), the FPC connector (6) and the at least one cell retainer (12) are inserted into the housing container (49), wherein the at least one cell retainer (12) has the at least one spacing retaining protrusion (39) such that the container wall (51) of the housing container (49) together with the at least one retainer (38) forms a spacing (40). -In particular, the housing (37) of the assembly has a housing cover (52) that closes the inlet (50) of the housing container (49).

[0104] 7. The battery pack (1) according to any one of claims 1 to 6. -The battery pack (1) has a particularly rectangular single-cell block (4), wherein the single-cell block (4) has a single battery cell (7), and wherein the single-cell block (4) is spatially arranged in the pack housing (37); and -The FPC connector (6) and guide groove (42) are arranged in space parallel to the block side (4BU1) of the single pool block (4), especially the circumferential side (4BU1); -In particular, the single cell block (4), especially its cuboid shape, is formed by the at least one single cell holder (12), especially the at least one holder (38), and especially the battery cell (7) held in place.

[0105] 8. The battery pack (1) according to any one of claims 1 to 7. -The battery pack (1) has an electrical single-cell contactor (23), in particular a single-cell contactor plate (28), wherein the single-cell contactor (23) is spatially arranged in the pack housing (37), and wherein the single-cell contactor (23) is electrically connected to a single battery cell (7). -The FPC connector (6) is electrically connected to the single-cell contactor (23) by means of resistance welding (WV); and -The resistance welded joints (WV) are arranged in space between the guide grooves (42) and not beside the guide grooves (42), and especially on the block side (4BU1) of the single pool block (4) parallel to the block side (4BU1).

[0106] 9. The battery pack (1) according to any one of claims 1 to 8. -The battery pack (1) has an electrical single-cell contactor (23), in particular a single-cell contactor plate (28), wherein the single-cell contactor (23) is spatially arranged in the pack housing (37), and wherein the single-cell contactor (23) is electrically connected to a single battery cell (7). -The FPC connector (6) therein is electrically connected to the single-cell contactor (23) by means of a resistance welding connection (WV) established from above by welding electrodes (24); - wherein the at least one single-pool retainer (12), and in particular the at least one retainer (38), is configured as at least one welding bracket (25) for establishing a resistance welded (WV) connection, and wherein the at least one single-pool retainer (12) is spatially arranged below the single-pool contactor (23) and the FPC connector (6); and - wherein the at least one spacing retaining protrusion (39) is spatially arranged above at least one welding bracket (25) and / or next to the FPC connector (6).

[0107] 10. The battery pack (1) according to any one of claims 1 to 9. -The FPC connector (6) is configured to be slightly elongated and is fixed by means of its longitudinal ends (6E1, 6E2) in particular for establishing a resistance welded connection (WV), which is spatially arranged particularly between the longitudinal ends; -In particular, the FPC connector (6) is fixed at its first longitudinal end (6E1) by means of the battery management system (5) of the battery pack (1), and / or the FPC connector (6) is fixed at its second longitudinal end (6E2) by means of at least one electrical group data contact (17) of the battery pack (1), especially the FPC connector (6).

[0108] 11. The battery pack (1) according to any one of claims 1 to 10. -The battery pack (1) has a particularly rectangular single-cell block (4), wherein the single-cell block (4) has a single battery cell (7), and wherein the single-cell block (4) is spatially arranged in the pack housing (37); and -The FPC connector (6) extends at least 50%, especially 100%, on a section (4S) of the first circumferential side (4BU1) of the single pool block (4) from the first end (E1) of the circumferential side (4BU1) adjacent to the first end side (4BS1) of the single pool block (4) to the second end (E2) of the circumferential side (4BU1) adjacent to the second end side (4BS2) of the single pool block (4), wherein the second end side (4BS2) is opposite to the first end side (4BS1); -In particular, the FPC connector (6) extends uninterruptedly from the block circumferential side (4BU1) of the single pool block (4) to the second block end side (4BS2) and especially to the second block circumferential side (4BU2), wherein the second block circumferential side (4BU2) is opposite to the first block circumferential side (4BU1), and / or especially from the first block end side (4BS1) to the first block circumferential side (4BU1); -In particular, the single cell block (4), especially its cuboid shape, is formed by the at least one single cell holder (12), especially the at least one holder (38), and especially the battery cell (7) held in place.

[0109] 12. The battery pack (1) according to any one of claims 1 to 11. -The battery pack (1) has a battery management system (5), which is configured to detect electrical measurement signals (7U) of individual battery cells (7), particularly the cell voltage, and the battery management system (5) is spatially arranged within the pack housing (37); and -The FPC connector (6) wherein the FPC connector (6) has at least electrical measurement printed wires (8). -At least the measurement printed leads (8) provide at least an electrical measurement connection (MV) between the battery management system (5) and the individual battery cells (7); and -At least the measurement printed wire (8) is configured to transmit at least the measurement signal (7U).

[0110] 13. The battery pack (1) according to any one of claims 1 to 12. -The FPC connector (6) therein has an electrically insulated base (29) having a thickness (29D) of up to 500 μm and especially down to 50 μm, especially 200 μm.

[0111] 14. A system (100) having: - The battery pack (1) according to any one of claims 1 to 13; and - Processing apparatus (2) and / or an electrical charging device (3) configured to supply power (LL) to the battery pack (1).

[0112] Furthermore, as a supplementary or alternative, regarding the claims mentioned below "Patent Claims," ​​the claims can be: 1. A battery pack (1) for supplying drive power (AL) to an electrically driven processing tool (2). -The battery pack (1) therein has a single battery cell (7) and a block-shaped, particularly rectangular, housing (37). -The individual battery cells (7) are spatially arranged within the housing (37); and -The assembly housing (37) has a first air inlet (53) on at least one first housing circumferential side (37BU1) along the first half (37S1) of the road segment (37S) and a second air inlet (54) along the second half (37S2) of the road segment (37S) and in particular just on the second housing end side (37BS2) has an air outlet (55) for airflow (56) in the assembly housing (37) from the first air inlet (53) and the second air inlet (54) next to the battery cell (7) to the air outlet (55), respectively, for air cooling of the battery cell (7); -The section (37S) therein is from the first end (37E1) of the circumferential side (37BU1) of the housing adjacent to the first housing end side (37BS1) of the housing assembly (37) to the second end (37E2) of the circumferential side (37BU1) of the housing adjacent to the second housing end side (37BS2) of the housing assembly (37), wherein the second housing end side (37BS2) is opposite to the first housing end side (37BU1); - wherein the first half (37S1) is adjacent to the first housing end side (37BS1); - wherein the second half (37S2) is adjacent to the second housing end side (37BS2); and -The ratio (53OFW / 54OFW) of the first opening area value (53OFW) of the first air inlet (53) to the second opening area value (54OFW) of the second air inlet (54) is in the range of 2, especially from 5 to 20, especially to 15, especially 8.

[0113] 2. The battery pack (1) according to claim 1. -The first air inlet (53) and the second air inlet (54) are arranged in space, and the ratio (53OFW / 54OFW) is set such that the flow resistance values ​​for the airflow (56) from the side of the battery cell (7) to the air outlet (55) from the first air inlet (53) and the second air inlet (54) in the housing (37) are the same and / or the air cooling for the battery cell (7) is uniform.

[0114] 3. The battery pack (1) according to claim 1 or 2. - wherein the first air inlet (53) is distributed along the first half (37S1) over at least 50%, particularly 60%, of the first half (37S1) and / or is spatially arranged to the boundary (37SG) relative to the second half (37S2); and / or - wherein the second air inlet (54) is distributed along the second half (37S2) within at least 50%, particularly 60%, particularly 70% of the second half (37S2) and / or is spatially arranged from the boundary (37SG) relative to the first half (37S1); and / or -The battery cells (7) are distributed along the first half (37S1) within at least 50%, particularly at least 60%, particularly 70% of the first half (37S1) and / or are spatially arranged to the boundary (37SG) relative to the second half (37S2); and / or -The battery cells (7) therein are distributed along the second half (37S2) within a range of at least 50%, especially at least 60%, especially at least 70%, especially 80% of the second half (37S2) and / or are arranged spatially from the boundary (37SG) relative to the first half (37S1).

[0115] 4. The battery pack (1) according to any one of claims 1 to 3. -The battery pack (1) has a particularly rectangular single cell block (4), wherein the single cell block (4) is spatially arranged in the pack housing (37), and wherein the single cell block (4) has a first sub-block (57) and a second sub-block (58), wherein the first sub-block (57) and the second sub-block (58) have single battery cells (7) and are spatially arranged sequentially to each other along the road segment (37S).

[0116] 5. The battery pack (1) according to any one of claims 1 to 4. - wherein at least 25%, particularly 33%, of the first air inlet (53) and / or at least 50%, particularly at least 65%, particularly at least 80%, of the second air inlet (54) are spatially arranged on the circumferential side (37BU1) of the first housing, wherein the width (37BU1B) of the first housing circumferential side (37BU1) orthogonal to the road segment (37S) and the width (37BU2B, 37BU3B, 37BU4B) of all the other housing circumferential sides (37BU2, 37BU3, 37BU4) of the group of housings (37) are at least as large, particularly wherein the length (37SL) of the road segment (37S) is greater than all the widths (37BU1B, 37BU2B, 37BU3B, 37BU4B); and / or -The housing (37) wherein the housing (37) has an air inlet (53, 54) on at least one of the other housing circumferential sides (37BU2, 37BU3, 37BU4), and especially on all the other housing circumferential sides (37BU2, 37BU3, 37BU4).

[0117] 6. The battery pack (1) according to any one of claims 1 to 5. -The first air inlet (53) is spatially arranged at the edge (37BU1R) and in the center (37BU1M) of the first housing circumferential side (37BU1) at the width (37BU1B) orthogonal to the road segment (37S); and / or -The second air inlet (54) is spatially arranged at the edge (37BU1R) of the first housing circumferential side (37BU1) orthogonal to the width (37BU1B) of the road segment (37S) and is not arranged in the center (37BU1M) of the first housing circumferential side (37BU1).

[0118] 7. The battery pack (1) according to any one of claims 1 to 6. -The battery pack (1) therein has a particularly rectangular single cell block (4), wherein the single cell block (4) has a single battery cell (7); and -The assembly housing (37) is configured, and the individual cell block (4) is configured and spatially arranged in the assembly housing (37), thereby forming at least one air passage (59) for airflow (56) between the assembly housing (37) and the individual cell block (4), especially the individual battery cell (7), at least partially along the section (37S) next to the individual cell block (4), especially on at least the first housing circumferential side (37BU1) of the assembly housing (37) and especially on at least one other housing circumferential side (37BU2, 37BU3, 37BU4), especially on all other housing circumferential sides (37BU2, 37BU3, 37BU4) of the assembly housing (37).

[0119] 8. The battery pack (1) according to any one of claims 1 to 7. -The battery pack (1) has a particularly rectangular single cell block (4), wherein the single cell block (4) has a single battery cell (7), and wherein the single cell block (4) is configured and spatially arranged in the pack housing (37), thereby forming at least one air passage (60) through the single cell block (4) at least partially along the section (37S) particularly up to the second housing end side (37BS2) for airflow (56).

[0120] 9. The battery pack (1) according to claim 8. -The battery pack (1) wherein the battery pack (1) has at least one single cell retainer (12), contact plate (46) and / or FPC connector (6), wherein the at least one single cell retainer (12), contact plate (46) and / or FPC connector (6) are arranged spatially in the pack housing (37) at the single cell block (4) and / or on the second housing end side (37BS2) particularly parallel to the second housing end side (37BS2); - wherein the at least one single-cell retainer (12) holds a single battery cell (7), and wherein the single-cell retainer (12) has a retainer opening (61), particularly a retainer hole (62), wherein an air passage (60) is formed through at least the retainer opening (61); and / or -The contact plate (46) carries at least one electrical group power contact (44) and / or at least one electrical group data contact (17) of the battery pack (1), and the contact plate (46) has a plate opening (63), in particular a plate hole (64), wherein an air passage (60) is formed through at least the plate opening (63); and / or -The FPC connector (6) wherein the FPC connector (6) has a connector opening (20), in particular a connector hole (21), wherein the air channel (60) is formed through at least the connector opening (20), wherein at least one measurement printed wire and / or data printed wire (19) of the FPC connector (6) extends at least all the way to the connector opening (20).

[0121] 10. The battery pack (1) according to claim 9. -The retainer empty part (61), the plate empty part (63), the connector empty part (20) and the air outlet (55) are arranged sequentially along the road segment (37S).

[0122] 11. The battery pack (1) according to any one of claims 1 to 10. -The battery pack (1) has at least one electrical group power contact (44), in particular a plug connector (45), wherein the group power contact (44) is configured to contact the electrical appliance power contact of the processing instrument (2) in order to transmit drive power (AL); and / orThe battery pack (1) has at least one electrical group data contact (17), in particular a plug connector (18), wherein the group data contact (17) is configured to contact the electrical appliance data contact of the processing instrument (2) in order to transmit data (DA) between the battery pack (1) and the processing instrument (2); -The power contacts (44) and / or data contacts (17) are arranged, in particular, on the second housing end side (37BS2), spatially further away from the first housing circumferential side (37BU1) than the air outlet (55).

[0123] 12. The battery pack (1) according to any one of claims 1 to 11. -The battery cell (7) therein is a slightly elongated circular cell (10), wherein the circular cell (10) is arranged in space with its longitudinal axis (10L) parallel to the road section (37S) and in particular parallel to each other in at least one common cell plane (10E).

[0124] 13. The battery pack (1) according to any one of claims 1 to 12. -The housing (37) wherein the housing has a housing container (49) having an inlet (50) through which the battery cell (7) is introduced into the housing container (49); and -The housing (37) wherein the housing has a housing cover (52) that closes the inlet (50) of the housing container (49). -The shell container (49) and not the shell cover (52) have a first air inlet (53), a second air inlet (54) and an air outlet (55). -In particular, the shell cover (52) and the shell container (49) are arranged one after the other in space along the road segment (37S).

[0125] 14. A system (100) having: - The battery pack (1) according to any one of claims 1 to 13; and - Processing apparatus (2) and / or an electrical charging device (3) configured to supply power (LL) to the battery pack (1).

[0126] 15. The system (100) according to claim 14. -The processing apparatus and / or charging equipment (3) and the battery pack (1) are configured to receive the battery pack (1) by means of the processing apparatus and / or charging equipment (3), and wherein the processing apparatus and / or charging equipment (3) has a ventilation device (65) such that the ventilation device (65) is configured to generate an airflow (56) in the housing (37), wherein the ventilation device (65) is configured to draw in cooling air (22) from the air outlet (55) of the battery pack (1) received by means of the processing apparatus and / or charging equipment (3), and in particular, the first air inlet (53) and the second air inlet (54) on at least the first housing circumferential side (37BU1) are free so as to draw in the first air inlet (53) and the second air inlet (54).

Claims

1. A battery pack (1) for supplying drive power (AL) to an electrically driven processing tool (2). -The battery pack (1) wherein the battery pack (1) has a single battery cell (7), an electrical single cell contactor (23) and an FPC connector (6). -The single-cell contactor (23) is electrically connected to the single cell (7) of the battery; and -The FPC connector (6) therein is electrically connected to the single-cell contactor (23) by means of a resistance welding connection (WV) established from above by welding electrodes (24); Its features are, - The battery pack (1) has at least one single-cell retainer (12) that holds a single battery cell (7), wherein the at least one single-cell retainer (12) is configured as at least one welding bracket (25) for establishing a resistance welded (WV) connection, and wherein the at least one single-cell retainer (12) is spatially arranged below the single-cell contactor (23) and / or the FPC connector (6); and / or - The FPC connector (6) has a conductive connector soldering surface (26) which extends uninterruptedly between soldering points (27) of a resistance welded connection (WV) of a corresponding single pool contactor (23) in the single pool contactor (23), especially wherein the single pool contactor (23) is spatially arranged below the connector soldering surface (26) for establishing the resistance welded connection (WV).

2. The battery pack (1) according to claim 1. -The battery pack (1) described therein has a battery management system (5), which is configured to detect electrical measurement signals (7U) of individual battery cells (7), particularly the cell voltage; and -The FPC connector (6) wherein the FPC connector (6) has at least electrical measurement printed wires (8). - Wherein at least the measurement printed leads (8) and the single-cell contactor (23) provide at least a measurement connection (MV) between the battery management system (5) and the battery cell (7); and -In which at least the measurement printed wire (8) and the single-cell contactor (23) are configured to transmit at least the measurement signal (7U).

3. The battery pack (1) according to claim 1 or 2. -The single-cell contactor (23) therein is an electrical single-cell connector (14) that electrically connects the single-cell batteries (7) in series and / or in parallel to each other.

4. The battery pack (1) according to any one of claims 1 to 3. -The single-pool contactor (23) therein is rigid, especially the single-pool contactor plate (28).

5. The battery pack (1) according to any one of claims 1 to 4. -The single pool retainer (12) is configured as a welded bracket (25), below which at least two of the single pool contactors (23) extend uninterruptedly; and -The FPC connector (6) extends discontinuously above or below the two single-pool contactors (23).

6. The battery pack (1) according to any one of claims 1 to 5. -The FPC connector (6) wherein the FPC connector (6) has an electrically insulated base (29) that supports the connector soldering surface (26) at the edge (26R) of the connector soldering surface and has a recess (30), particularly a window (31), below or above the center (26M) of the connector soldering surface that is configured to establish a resistance welded (WV) connection; and -The single-pool contactor (23) is spatially positioned below the connector welding surface (26) in order to establish a resistance welded connection (WV).

7. The battery pack (1) according to any one of claims 1 to 6. -The connector welding surface (26) used to establish the resistance welded connection (WV) has a thickness (26D) of a maximum of 150 μm and a particularly minimum of 18 μm, a particularly minimum of 35 μm, and a particularly minimum of 70 μm and / or a minimum of 1.5 mm and / or a maximum of 10 mm and a particularly minimum of 4 mm and / or a minimum of 2 mm and / or a maximum of 30 mm and a particularly minimum of 12 mm (26L); and / or -The conductive contactor welding surface (32) of the single-pool contactor (23) for establishing a resistance welded connection (WV) has a thickness (32D) greater than 150 μm and especially a maximum of 750 μm, especially 300 μm and / or a minimum of 3 mm and / or a maximum of 15 mm, especially 6 mm and / or a minimum of 8 mm and / or a maximum of 30 mm, especially 16 mm (32L); and / or -The electrically insulating support surface (33) of at least one welding support (25) used to establish a resistance welded joint (WV) has a thickness (33D) greater than 150 μm and especially a maximum of 3 mm, especially 0.9 mm and / or a maximum of 43 mm (33B).

8. The battery pack (1) according to any one of claims 1 to 7. -The electrically insulating support surface (33) of the at least one weld support (25), and in particular at least one wall (34) of the at least one single pool retainer (12), extend uninterruptedly below the resistance welded connection (WV) more than between the weld points (27), in particular the length (33L) of the support surface (33) and the length (26L, 32L) of the connector weld surface (26) and / or the conductive contactor weld surface (32) of the single pool contactor (23) for establishing the resistance welded connection (WV) are at least the same, and in particular the width (33B) of the support surface (33) and the width (26B, 32B) of the connector weld surface (26) and / or the contactor weld surface (32) are at least the same.

9. The battery pack (1) according to any one of claims 1 to 8. -The single-pool contactor (23) therein has a conductive contactor welding surface (32) for establishing a resistance welded connection (WV), the conductive contactor welding surface extending uninterruptedly below the resistance welded connection (WV) between corresponding connector welding surfaces (26) in the connector welding surface (26), in particular the length (32L) of the contactor welding surface (32) and the length (26L) of the connector welding surface (26) are at least the same, and in particular the width (32B) of the contactor welding surface (32) and the width (26B) of the connector welding surface (26) are at least the same.

10. The battery pack (1) according to any one of claims 1 to 9. -The FPC connector (6) wherein the FPC connector (6) has at least one blank (35), in particular a through hole (36), the at least one blank being configured to receive a positioning and / or orientation device for positioning and / or orienting the FPC connector (6) relative to the single pool contactor (23) in order to establish a resistance welded connection (WV).

11. The battery pack (1) according to any one of claims 1 to 10. -The FPC connector (6) is configured to be slightly elongated and is fixed by means of its longitudinal ends (6E1, 6E2) in particular for establishing a resistance welded connection (WV), which is spatially arranged between the longitudinal ends. -In particular, the FPC connector (6) is fixed at its first longitudinal end (6E1) by means of the battery management system (5) of the battery pack (1), and / or the FPC connector (6) is fixed at its second longitudinal end (6E2) by means of at least one electrical group data contact (17) of the battery pack (1), especially the FPC connector (6).

12. The battery pack (1) according to any one of claims 1 to 11. -The battery pack (1) therein has a particularly rectangular single-cell block (4), the single-cell block having a single battery cell (7); and -wherein the direction from top to bottom is toward the single pool block (4) (-z), and / or wherein the connector soldering surface (26) is arranged in space at least, especially just on the block side (4BU1) of the single pool block (4) parallel to the block side (4BU1), especially the block circumferential side (4BU1).

13. The battery pack (1) according to any one of claims 1 to 12. -The battery pack (1) has a housing (37), wherein individual battery cells (7), individual cell contactors (23), FPC connectors (6), and at least one individual cell retainer (12) are spatially arranged in the housing (37); and -The at least one single-cell retainer (12) has at least one retainer (38) that holds a single battery cell (7) in place, and the at least one single-cell retainer (12) has at least one pitch retaining protrusion (39) such that the housing (37) together with the at least one retainer (38) forms a pitch (40), wherein the FPC connector (6) is spatially arranged in at least one connector space (41) provided by means of the pitch (40).

14. The battery pack (1) according to any one of claims 1 to 13. -The battery pack (1) has a housing (37) in which battery cells (7), cell contactors (23) and FPC connectors (6) are spatially arranged, and the housing (37) has guide slots (42) which are arranged side by side to guide the battery pack (1) for mechanical connection with a processing tool (2), wherein the FPC connectors (6) are spatially arranged between the guide slots (42) and not beside the guide slots (42).

15. A system (100) having: - The battery pack (1) according to any one of claims 1 to 14; and - Processing apparatus (2) and / or an electrical charging device (3) configured to supply power (LL) to the battery pack (1).

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