Battery packs, processing systems, and methods for producing battery packs

Abstract

The present invention relates to a battery pack (1) for supplying electric drive power (AL) to an electric drive processing device (101), the battery pack (1) comprising: a stacked housing (10) having a common housing opening (10O) defined by a housing edge (10R), and a plurality of pouch cells (21) having individual terminal pieces (22) and configured and arranged to be stacked (20) within the stacked housing (10) such that the individual terminal pieces (22) protrude at least at least one edge portion (10RA) beyond the housing edge (10R) at least with a terminal piece portion (22T) on the common housing opening (10O), wherein the terminal piece portions (22T) are directly electrically connected to each other by welding connections (22S).

Description

TECHNICAL FIELD

[0001] APPLICATION FIELD AND PRIOR ART

[0002] The invention relates to a battery for supplying electric drive power to an electrically driven processing device, to a processing system comprising such a battery and an electrically driven processing device, and to a method of producing a battery for supplying electric drive power to an electrically driven processing device. SUMMARY

[0003] PROBLEM AND SOLUTION

[0004] The invention is based on the problem of providing a battery for supplying electric drive power to an electrically driven processing device, a processing system comprising such a battery and an electrically driven processing device, and a method of producing a battery for supplying electric drive power to an electrically driven processing device, wherein the battery and the method each have improved properties.

[0005] The invention solves this problem by providing a battery having the features of claim 1, a processing system having the features of claim 12, and a method having the features of claim 13. Advantageous developments and / or configurations of the invention are described in the dependent claims.

[0006] The battery according to the invention is designed or configured for supplying, in particular automatically supplying, electric drive power to an electrically driven processing device, in particular a horticultural, forestry and / or construction equipment. The battery comprises a stack housing and a plurality of pouch cells. The stack housing has a common housing opening defined or delimited by housing edges, in particular of the stack housing. The pouch cells have cell tabs and are designed or configured and arranged in a stack within the stack housing such that the cell tabs, in particular all cell tabs, at least with tab portions, in particular in each case, protrude over at least one edge portion of the housing edges, in particular outward through the housing opening. In particular, all tab portions are directly electrically connected to each other by a solder connection.

[0007] The protrusion of the tab portions allows the tab portions to still be relatively easily accessible from the outside at a time after the pouch cells are arranged in the stack within the stack housing and, thus, to be or to be intended to be electrically connected to each other by a solder connection in a relatively simple manner and, thus, allows the battery to be produced in a relatively simple manner.

[0008] In particular, the stack housing can be block-shaped and / or cuboid-shaped. In addition or alternatively, the stack housing can be partially or even completely composed of aluminum.

[0009] The pouch cells can be configured to supply drive power to a processing device. In addition or alternatively, the pouch cells can be battery cells or electric cells, or in each case individual rechargeable storage elements of electrical energy working on an electrochemical basis. In particular, the pouch cells can be lithium-ion battery cells. Furthermore, in addition or alternatively, the pouch cells can be connected in parallel or in series. Furthermore, in addition or alternatively, in particular in each case, tab portions of immediately adjacent pouch cells can be directly electrically connected to one another by one of the solder connections. Furthermore, in addition or alternatively, the tab portions can be directly mechanically connected to one another by the solder connections. Furthermore, in addition or alternatively, the pouch cells can be flat cells. Furthermore, in addition or alternatively, the surfaces of the pouch cells can be rectangular. Furthermore, in addition or alternatively, the pouch cells can be similar or identical, in particular of the same type and / or of the same construction.

[0010] The cell tabs can be referred to as contact tabs, cell contacts, terminals, poles or connector electrodes.

[0011] The term "directly" can mean without intermediate elements.

[0012] The solder connections can be laser solder connections or ultrasonic solder connections.

[0013] The pouch cells can be arranged in a stack, one on top of the other or stacked, in particular mutually parallel in the respective main plane. In addition or alternatively, the stack can be cuboid in shape. Furthermore, in addition or alternatively, the pouch cells with the housing or cell shell can in particular be completely and / or only arranged in the stack within a stack housing. Furthermore, in addition or alternatively, the tab portions can in particular be completely and / or only arranged outside the stack housing. Furthermore, in addition or alternatively, it is not necessary to provide a housing wall between the tab portions and the housing or cell shell. Furthermore, in addition or alternatively, the cell tabs in the tab portions, in particular in each case, can protrude beyond the edge portions, in particular in each case, the immediately adjacent or adjacent edge portions. In particular, the cell tabs in the tab portions can protrude beyond the housing edge, in particular the entire housing edge. Furthermore, in addition or alternatively, in particular in each case, the cell tabs in the tab portions can protrude beyond the at least one edge portion by at least 2 millimeters (mm), in particular by at least 5 mm, in particular by at least 10 mm

[0014] In a development of the application, the common housing opening is the only housing opening for the cell tabs, in particular the tab portions, to protrude beyond.

[0015] As a supplement or alternative, bag-type units are designed or configured and arranged to be stacked, such that the unit terminals, in particular all the unit terminals, especially the terminal portions, are arranged on the common terminal side of the stack, or in particular only on the single common terminal side of the stack.

[0016] This allows for a relatively simple structural design and relatively simple production of the battery pack.

[0017] In particular, in each case, the bag-type unit may have a unit terminal block on the same boundary or edge of the outer shell or unit housing, especially the bag-type unit. As a supplement or alternative, in the case of a cuboid shape, the terminal block side may be one side of a stacked cuboid. Furthermore, as a supplement or alternative, stacks with a common terminal block side may be arranged on a common housing opening.

[0018] In this development of the invention, the housing edge defines the housing opening, particularly the opening plane of the common housing opening. The tab portions, particularly all tab portions, extend only parallel to the opening plane. This allows welded connections to be produced, or will be produced, in a relatively simple manner. Specifically, the opening plane may be parallel to the tab side (if present) or may extend parallel to the tab side, or the tab portions may extend parallel to the tab side. Alternatively or supplementarily, the tab portion may be a bent portion of a single tab, and particularly in each case, protrudes beyond the immediately adjacent or adjacent edge portion, particularly in each case, protruding along the extension of the bending axis of the single tab. Furthermore, alternatively or supplementarily, it is not necessary to provide a housing wall between the parallel-extending tab portions and the housing or single-piece shell.

[0019] In this invention, the battery pack includes at least one power connector. The power connector is electrically connected, particularly directly and particularly mechanically, to one of the terminal block portions via a soldered connection. The protrusion of the terminal block portions allows them to be, or will be, connected to the power connector via a soldered connection in a relatively simple manner after the pouch cells are arranged in a stacked housing. Specifically, this allows the terminal block portions to be, or will be, connected to each other and to the power connector via, particularly corresponding soldered connections, particularly in only, particularly single and / or common, production steps after the pouch cells are arranged in a stacked housing. In particular, the power connector may be at least partially disposed between parallel extending terminal block portions and edge portions, particularly parallel to the terminal block portions.

[0020] In this development of the invention, the stacked shell is cuboid in shape and has at least four, particularly five, shell walls. The edges of four of the shell walls (particularly on the circumferential side) define or delineate shell openings, particularly a common shell opening.

[0021] In the development of this invention, the stacked housing has a first housing wall, particularly the aforementioned first housing wall, and a second housing wall, particularly the aforementioned second housing wall. The second housing wall is positioned opposite the first housing wall at a certain distance, particularly a fixed distance. The stack is arranged between the first housing wall and the second housing wall. The height of the stack along the stacking direction is limited by the first housing wall and the second housing wall, particularly by the distance between them. In particular, compared to the thickness of the bag-type monomer along the stacking direction, especially when the bag-type monomer expands, the fixed distance can mean that the distance between the first housing wall and the second housing wall may change only to a very small extent or not at all. As a supplement or alternative, the second housing wall, particularly with its main plane, can be arranged parallel to the first housing wall, particularly the main plane of the first housing wall. Furthermore, as a supplement or alternative, the bag-type monomers can be arranged in a stack, with the corresponding main planes orthogonal to the stacking direction and / or parallel to the first housing wall, particularly the main plane of the first housing wall, and / or parallel to the second housing wall, particularly the main plane of the second housing wall. Furthermore, as a supplement or alternative, the stacking can be configured such that the stacking direction is orthogonal to the first housing wall, particularly the principal plane of the first housing wall, and / or the second housing wall, particularly the principal plane of the second housing wall. Furthermore, as a supplement or alternative, the distance can be along the stacking direction. Furthermore, as a supplement or alternative, the height can correspond to, and in particular be equal to, the distance.

[0022] In this development of the invention, the stacked housing has a first housing portion and a second housing portion. The first housing portion has a first housing wall. The second housing portion has a second housing wall. Furthermore, the first housing portion and the second housing portion are mechanically connected to each other by at least one welded connection, particularly a direct mechanical connection. The protrusion of the terminal lug portions allows, after the pouch units are arranged in a stacked configuration within the stacked housing, the terminal lug portions to each other, to the terminal lug portions and power connectors (if present), and / or the first housing portion and the second housing portion to each other, to be connected, particularly in specific welded connections, in particular in individual and / or common production steps.

[0023] In this invention, the battery pack includes at least one compensation element. The at least one compensation element is disposed in the stack. Furthermore, the at least one compensation element extends across a major portion of the surface of the pouch cell and is designed or configured to adjust, in particular, the stack height by means of the compensation thickness of the at least one compensation element, to accommodate, in particular, a fixed distance between the first housing wall and the second housing wall. Specifically, the at least one compensation element may particularly comprise a foam material, particularly sponge rubber. As a supplement or alternative, the at least one compensation element may be configured to cushion the expansion of the pouch cell along the stacking direction (if present). Furthermore, as a supplement or alternative, the at least one compensation element may be a thermal insulator, wherein at least one thermal insulator may be disposed between two pouch cells in each case. Furthermore, as a supplement or alternative, the major portion of the surface may refer to at least 70%, particularly at least 80%, particularly at least 90% of the surface. In particular, the at least one compensation element may extend across the entire surface of the pouch cell.

[0024] In the development of this invention, the pouch cells are designed or configured and arranged to be stacked, such that the cell terminals, in particular all the cell terminals, are arranged in only (in particular precisely) two terminal rows. The removal or distal limit of the terminal row defines or delineates an intermediate zone, in particular only one intermediate zone, in particular a single intermediate zone. The battery pack includes a circuit board. The circuit board is arranged entirely and / or only within the intermediate zone, and in particular in each case, is electrically connected by soldering, and in particular mechanically connected to multiple cell terminals, in particular terminal portion. This allows the cell terminals, in particular terminal portion, to remain relatively easily accessible from the outside after the circuit board is arranged, and therefore can or will be electrically connected to each other in a relatively simple manner by soldering. In particular, this allows, after the pouch cells are arranged to be stacked within a stacked housing, the terminal portion to each other, the terminal portion to the power connector (if present), the first housing portion and the second housing portion to each other, and / or the circuit board to multiple cell terminals, in particular terminal portion, to be connected by in particular corresponding soldering in particularly only one, in particular a single and / or common production step. Specifically, the individual terminal blocks of the bag-type unit, particularly the corresponding bag-type unit within the bag-type unit, and therefore the terminal block rows, can be spaced apart from each other. In other words, each bag-type unit can have two individual terminal blocks spaced apart from each other, and are configured and arranged to stack such that the individual terminal blocks of different bag-type units can be arranged in a first row of terminal block rows, and the other individual terminal blocks of different bag-type units can be arranged in a second row of terminal block rows, wherein the first and second terminal block rows can be spaced apart from each other. Furthermore, as a supplement or alternative, a terminal block row can be referred to as a terminal block line. Furthermore, as a supplement or alternative, terminal block rows can be parallel to each other or can extend parallel to each other. Furthermore, as a supplement or alternative, circuit boards can be disposed on the stack. Specifically, being on the stack can mean that the circuit boards can be spaced a maximum of 20 mm from the stack, particularly a maximum of 10 mm, particularly a maximum of 5 mm. Furthermore, as a supplement or alternative, the circuit boards do not need to reach the removable end limits. Furthermore, as a supplement or alternative, circuit boards can be disposed between terminal block rows, particularly between the facing or adjacent end limits of the terminal block rows. Furthermore, as a supplement or alternative, particularly in each case, the circuit board may at least partially expose or not cover the terminal block array. Furthermore, as a supplement or alternative, the circuit board may be electrically connected to multiple individual terminal blocks via electrical unit connectors, particularly the terminal block portion. Furthermore, as a supplement or alternative, the circuit board may hold measuring electronics, which can be configured for measuring, particularly automatically measuring, the voltage of all pocket units, particularly electrical voltage, and especially voltage values. Furthermore, as a supplement or alternative, the circuit board may be positioned on the housing opening, particularly on the common housing opening.

[0025] In this invention, the battery pack includes a frame. The frame supports the circuit board and is disposed on the housing opening, particularly on the common housing opening. Individual terminal pieces, particularly all individual terminal pieces, and the circuit board are positioned relative to each other by stacking the housing and the frame, and are in particular fixed. Stacking the housing and the frame allows for relatively simple positioning. In particular, the individual terminal pieces, especially the terminal piece portions, may be disposed on the housing opening. As a supplement or alternative, the frame may be made partially or entirely of a synthetic material.

[0026] In the development of this invention, the battery pack, particularly the pouch cell, has a maximum electric drive power of at least 1 kilowatt (kW), particularly at least 2 kW, and / or at most 10 kW, particularly at most 5 kW.

[0027] As a supplement or alternative, battery packs, especially pouch cells, have a nominal voltage, particularly an electrical nominal voltage of at least 10 volts (V), particularly at least 20 V, and / or at most 100 V, particularly at most 50 V.

[0028] As a supplement or alternative, battery packs, especially pouch cells, have a maximum energy content, particularly a maximum electrical energy content, of at least 100 watt-hours (Wh), particularly at least 200 Wh, and / or a maximum of 1000 Wh, particularly at a maximum of 500 Wh.

[0029] As a supplement or alternative, the battery pack has a mass of at least 0.5 kg, particularly at least 1 kg, and / or at most 10 kg, particularly at most 5 kg.

[0030] As a supplement or alternative, the battery pack has a height of a minimum of 2.5 cm and / or a maximum of 10 cm, and / or a width of a minimum of 5 cm and / or a maximum of 20 cm, and / or a depth of a minimum of 7.5 cm and / or a maximum of 30 cm.

[0031] The processing system according to the invention includes a battery pack, particularly the battery pack described above, and an electrically driven processing device, particularly the aforementioned electrically driven processing device. The battery pack and the processing device are designed or configured to be electrically connected to each other for supplying, particularly automatically, electric drive power from the battery pack to the processing device.

[0032] Specifically, the treatment system can be a treatment system for horticulture, forestry, and / or construction. As a supplement or alternative, the treatment equipment can be a treatment device for horticulture, forestry, and / or construction. Furthermore, as a supplement or alternative, the treatment equipment can be hand-guided, particularly ground-guided, or handheld. Hand-guided, particularly handheld, treatment equipment can mean that the treatment equipment can have a maximum mass of 50 kg, particularly 20 kg, particularly 10 kg. Furthermore, as a supplement or alternative, the treatment equipment can include an electrically driven motor. Furthermore, as a supplement or alternative, the battery pack and treatment equipment can be configured for detachable electrical connection with each other, particularly without the use of tools and / or without damage, particularly through the use of plug connectors. Furthermore, as a supplement or alternative, the battery pack and treatment equipment can be configured for detachable mechanical connection with each other, particularly without the use of tools and / or detachable without damage. Specifically, the treatment equipment can be configured to hold the battery pack.

[0033] In this invention, the processing equipment includes a battery housing, particularly a battery compartment. The battery housing is designed or configured to house a battery pack.

[0034] In the development of this invention, the processing equipment is a saw, a high branch saw, a clearing saw, a brush cutter, a hedge trimmer, a hedge trimmer, a blower, a leaf sweeper, pruning shears, a grinding wheel cutter, a sweeping device, a sweeping roller, a sweeping brush, a lawnmower, a weed cutter, or a lawn trimmer.

[0035] The method according to the present invention for producing a battery pack, particularly a battery pack as described above for supplying electric drive power to an electric drive processing device, particularly the aforementioned electric drive processing device, comprises the following steps:

[0036] a) Arranging multiple bag-type units, particularly the aforementioned multiple bag-type units, in a stacked housing, particularly the aforementioned stacked housing, wherein the stacked housing has a common housing opening defined by the housing edge, particularly the aforementioned housing edge, wherein the bag-type units have individual terminal pieces, particularly the aforementioned individual terminal pieces, and configured such that at least one terminal piece portion, particularly the aforementioned terminal piece portion, protrudes beyond at least one edge portion of the housing edge in the common housing opening, particularly the aforementioned edge portion. b) Soldering the terminal piece portions after arrangement so as to directly electrically connect the terminal piece portions to each other.

[0037] This method can have the same advantages as the battery packs described above.

[0038] Specifically, the welding can be laser welding or ultrasonic welding.

[0039] In this invention, the housing edge defines the opening plane of the housing opening, particularly the common housing opening, especially the aforementioned opening plane. The terminal piece portion extends parallel to the opening plane. Step b) includes: providing a welding base or fastener, particularly a welding anvil, particularly parallel to the terminal piece portion, at least partially between at least one of the parallel extending terminal piece portions and the edge portion, and using the welding base or fastener to weld the terminal piece portion. The protruding terminal piece portion allows for this feature. Specifically, the welding base can be removed from the battery pack, either in step b) or after welding.

[0040] In the development of this invention, the stacked housing has a first housing portion, particularly the aforementioned first housing portion, and a second housing portion, particularly the aforementioned second housing portion. The first housing portion has a first housing wall, particularly the aforementioned first housing wall, and the second housing portion has a second housing wall, particularly the aforementioned second housing wall. Step a) includes: setting the stack on the first housing wall, and after setting the second housing wall on the stack, such that the second housing wall is positioned opposite the first housing wall and at a certain distance from the first housing wall, particularly the aforementioned distance, such that the stack is positioned between the first housing wall and the second housing wall, and the height of the stack along the stacking direction, particularly the aforementioned stacking direction, particularly the aforementioned stacking height, is limited by the first housing wall and the second housing wall. Step b) includes: welding the first housing portion and the second housing portion to mechanically connect the first housing portion and the second housing portion to each other, particularly a direct mechanical connection. This is achieved by protruding the connecting piece portion. In particular, the welding can be laser welding or ultrasonic welding. Attached Figure Description

[0041] Other advantages and aspects of the invention may be appreciated from the following description of the claims and preferred exemplary embodiments of the invention, which will be explained below with reference to the accompanying drawings. Wherein:

[0042] Figure 1 A perspective view of a processing system according to the invention is shown, the system comprising a battery pack according to the invention and electrically driven processing equipment in the form of a saw, a grinding wheel cutter and a blower.

[0043] Figure 2 Showing from Figure 1 Exploded view of the battery pack;

[0044] Figure 3 Showing from Figure 1 A perspective view of the first housing portion of the stacked housing of the battery pack;

[0045] Figure 4 Showing from Figure 1A perspective view of the first housing portion of the battery pack, the pouch cell, the pressure sensor, and the internal temperature sensor, and the method according to the invention;

[0046] Figure 5 Showing from Figure 1 A perspective view of the first housing portion of the battery pack, the pouch cell, the pressure sensor and the internal temperature sensor disposed in the stack, and the method according to the invention;

[0047] Figure 6 Showing from Figure 1 A perspective view of the first housing portion of the battery pack, the stacked and the second housing portion of the stacked housing, and the method according to the invention;

[0048] Figure 7 Showing from Figure 1 A perspective view of the first housing portion, stack, second housing portion, and circuit board of the battery pack, and the method according to the invention;

[0049] Figure 8 Showing from Figure 1 A side view of the stacked housing and pouch cells of the battery pack, including the individual terminal pieces with terminal pieces and the welding base or fastener, and the method according to the invention;

[0050] Figure 9 Showing from Figure 1 A perspective view of the first housing portion, stack, second housing portion, circuit board, and another circuit board of the battery pack;

[0051] Figure 10 Showing from Figure 1 A perspective view of the first housing portion, stack, second housing portion, circuit board, another circuit board, and yet another circuit board of the battery pack;

[0052] Figure 11 Showing from Figure 1 A perspective view of the rear side of the battery pack, including the first housing portion, stack, second housing portion, circuit board, another circuit board, yet another circuit board, and external temperature sensor.

[0053] Figure 12 Showing from Figure 1 A perspective view of the external temperature sensor of the battery pack;

[0054] Figure 13 Showing from Figure 1 A perspective view of the battery pack casing; and

[0055] Figure 14 The diagram shows the source of the casting compound. Figure 1 A cross-sectional view of the battery pack. Detailed Implementation

[0056] Figures 1 to 14 A battery pack 1 for supplying electric drive power AL to an electric drive processing device 101 according to the present invention is shown, as well as a method for producing the battery pack 1 for supplying electric drive power AL to the electric drive processing device 101 according to the present invention.

[0057] Battery pack 1 includes a stacked housing 10 and multiple pouch cells 21. For example... Figure 7 As shown, the stacked housing 10 has a common housing opening 10O defined by the housing edge 10R. The pouch-type unit 21 has a unit terminal piece 22 and is configured and arranged as a stack 20 within the stacked housing 10 such that the unit terminal piece 22, at least by a terminal piece portion 22T, particularly in each case, protrudes beyond the housing edge 10R onto the common housing opening 10O by at least one edge portion 10RA, specifically protruding outward through the housing opening 10O. The terminal piece portions 22T are directly electrically connected to each other by a welded connection 22S.

[0058] The method includes the following steps: a) arranging a plurality of pouch-type units 21 into a stack 20 within a stacked housing 10, wherein the stacked housing 10 has a common housing opening 10O defined by a housing edge 10R, wherein the pouch-type unit 21 has a unit terminal piece 22 and is configured such that the unit terminal piece 22 protrudes at least by a terminal piece portion 22T over at least one edge portion 10RA of the common housing opening 10O beyond the housing edge 10R. b) after the arrangement, welding the terminal piece portions 22T for direct electrical connection between the terminal piece portions 22T and each other.

[0059] In the exemplary embodiment shown, the battery pack 1 includes ten pouch cells 21. In an alternative exemplary embodiment, the battery pack may include at least two pouch cells.

[0060] Furthermore, in the exemplary embodiment shown, the pouch-type units 21 in the stack 20 are disposed along the stacking direction z. Additionally, in the exemplary embodiment shown, the pouch-type units 21 extend along directions x and y, respectively, which are orthogonal to the stacking direction z.

[0061] Furthermore, in the exemplary embodiment shown, the individual terminal piece 22 having the terminal piece portion 22T protrudes beyond along a direction -y orthogonal to the stacking direction.

[0062] Furthermore, in the exemplary embodiments shown, particularly in each case, the terminal block portions 22T of adjacent bag-type units 21 are directly electrically connected to each other via one of the welded connections 22S.

[0063] Step b) includes welding the terminal block portions 22T of adjacent bag units 21, particularly in each case, for directly electrically connecting the terminal block portions 22T of adjacent bag units 21 to each other.

[0064] Specifically, the bag-type monomers 21 are connected in series, particularly along the stacking direction z.

[0065] In detail, the common housing opening 10O is the only housing opening for the individual terminal piece 22.

[0066] Furthermore, the bag-type unit 21 is configured and arranged as a stack 20 within the stack housing 10, such that the unit terminal block 22 is disposed on the common terminal block side 20V of the stack 20, particularly on the front side, especially on the common housing opening 10O, as shown. Figures 5 to 7 As shown.

[0067] Step a) includes: setting up a bag-type unit 21, wherein the bag-type unit 21 is configured such that the unit terminal block 22 is positioned on the common terminal block side 20V of the stack 20.

[0068] Furthermore, the housing edge 10R defines an opening plane 10E for the housing opening 10O, specifically parallel to the terminal block side 20V. The terminal block portion 22T extends parallel to the opening plane 10E.

[0069] In the exemplary embodiments shown, the terminal block portions 22T of adjacent bag-type units 21, particularly in each case, cover or overlap each other, especially along the stacking direction z.

[0070] Furthermore, step b) includes: placing a welding base 150, particularly a welding anvil, at least partially between at least one of the parallel extending tab portions 22T and the edge portion 10RA, particularly parallel to the tab portion 22T, and welding the tab portion 22T through the welding base 150, as follows. Figure 8 As shown.

[0071] In the exemplary embodiment shown, the connector portion 22T is a portion of the individual connector 22, particularly the portion of the individual connector 22 that bends from the direction -y to the direction z, -z, and particularly in each case protrudes beyond the adjacent edge portion 10RA, particularly in each case, protruding along the extension of the bending axis of the individual connector 22.

[0072] Furthermore, the battery pack 1 has at least one power connector 29, and in the exemplary embodiment shown, it has two power connectors 29. The power connectors 29 are electrically connected by soldering connections 29S, specifically directly electrically connected to one of the terminal block portions 22T.

[0073] Step a) includes: particularly after the arrangement of the pocket unit 21, setting at least one power connector 29 on the terminal block portion 22T. Step b) includes: soldering at least one power connector 29 to the terminal block portion 22T for electrical connection between the power connector 29 and the terminal block portion 22T, particularly a direct electrical connection.

[0074] In the exemplary embodiment shown, the power connector 29 is at least partially disposed between the parallel extending tab portion 22T and the edge portion 10RA, particularly parallel to the tab portion 22T.

[0075] Furthermore, the stacked shell 10 is cuboid in shape and has at least four shell walls, five shell walls 13, 14, 15, 16, and 17 in the illustrated exemplary embodiment. The wall edges 13R, 14R, 15R, and 16R of the four shell walls 13, 14, 15, and 16 define the structural opening 10O; particularly on the peripheral sides, such as... Figure 6 As shown.

[0076] In particular, one of the four shell walls is the first shell wall 13. In particular, the other of the four shell walls is the second shell wall 14.

[0077] The second housing wall 14 is positioned opposite the first housing wall 13 and at a distance of 10A. The stack 20 is disposed between the first housing wall 13 and the second housing wall 14. The height 20H of the stack 20 along the stacking direction z is limited by the first housing wall 13 and the second housing wall 14.

[0078] In detail, the stacked housing 10 has as follows Figure 3 The first housing portion 11 shown and as... Figure 6 The second housing portion 12 is shown. The first housing portion 11 has a first housing wall 13. The second housing portion 12 has a second housing wall 14. Furthermore, the first housing portion 11 and the second housing portion 12 are mechanically connected to each other by at least one welded connection 10S, particularly a direct mechanical connection, such as... Figure 7 As shown.

[0079] Step a) includes: setting the stack 20 on the first housing wall 13, and subsequently setting the second housing wall 14 on the stack 20, such that the second housing wall 14 is positioned opposite the first housing wall 13 with a distance 10A, such that the stack 20 is positioned between the first housing wall 13 and the second housing wall 14, and the height 20H of the stack 20 along the stacking direction z is limited by the first housing wall 13 and the second housing wall 14. Step b) includes: welding the first housing portion 13 and the second housing portion 14 for mechanically connecting the first housing portion 13 and the second housing portion 14 to each other, particularly for direct mechanical connection.

[0080] In the exemplary embodiment shown, the first housing portion 11 has a first housing wall or top sidewall 13; a housing wall 15, particularly a peripheral sidewall; and a housing wall 17, particularly a rear sidewall. The second housing portion 12 has a second housing wall or bottom sidewall 14 and a housing wall 16, particularly a peripheral sidewall.

[0081] Furthermore, in the illustrated exemplary embodiment, the first housing wall 13 and the second housing wall 14 extend along directions x and y, respectively, which are orthogonal to the stacking direction z. Additionally, in the illustrated exemplary embodiment, the distance 10A is along the stacking direction z. Furthermore, in the illustrated exemplary embodiment, the height 20H is equal to the distance 10A.

[0082] In addition, battery pack 1 includes at least one compensation element 60, such as Figures 4 to 6 As shown. At least one compensation element 60 is disposed in the stack 20. Furthermore, the at least one compensation element 60 extends across the main portion of the surface 21F of the pouch-type monomer 21 and is configured to adjust, in particular match, the distance 10A between the height 20H of the stack 20 and the first housing wall 13 and the second housing wall 14, and in particular to cushion the expansion of the pouch-type monomer 21 along the stacking direction z (if present).

[0083] In the exemplary embodiment shown, the battery pack 1 includes five compensation elements 60. In an alternative exemplary embodiment, the battery pack may include only a single compensation element.

[0084] Specifically, in each case, the two bag-type units 21 are positioned between the two compensation elements 60 in the compensation element 60. This allows the unit terminals 22 to be equal, and in particular, the terminal portions 22 can have the same length along the stacking direction z.

[0085] Furthermore, in the exemplary embodiment shown, at least one compensation element 60 extends along directions x and y orthogonal to the stacking direction z. Additionally, in the exemplary embodiment shown, at least one compensation element 60 extends across the entire surface 21F of the pouch-type unit 21.

[0086] Furthermore, in the exemplary embodiment shown, at least one compensation element 60 is a thermal insulator.

[0087] Furthermore, the bag-type unit 21 is configured and arranged to be stacked 20, such that the unit terminal block 22 is arranged in two terminal block rows 22a, 22b, as shown. Figures 5 to 7 As shown.

[0088] The removable end limits 22aL and 22bR of the terminal blocks 22a and 22b define the intermediate region 22Z. The battery pack 1 includes a circuit board 52. The circuit board 52 is disposed within the intermediate region 22Z and, in particular, is electrically connected to a plurality of individual terminal blocks 22, especially the terminal block portions 22T, via solder connections 52S in each case.

[0089] Step a) includes: arranging the bag-type units 21 into a stack 20, wherein the bag-type units 21 are configured such that the unit terminals 22 are arranged in two terminal rows 22a, 22b, wherein the removable end limits 22aL, 22bR of the terminal rows 22a, 22b define an intermediate region 22Z. Specifically, a circuit board 52 is placed within the intermediate region 22Z after the bag-type units 21 are arranged. Step b) includes: soldering the circuit board 52 to the plurality of unit terminals 22, particularly the terminal portion 22T, especially in each case, for electrically connecting the circuit board 52 to the unit terminals 22, particularly the terminal portion 22T.

[0090] In the exemplary embodiment shown, the terminal block rows 22a, 22b extend along or in the stacking direction z. Furthermore, in the exemplary embodiment shown, the removable end limits 22aL, 22bR of the terminal block rows 22a, 22b define or delineate the intermediate region 22Z along directions x, -x orthogonal to the stacking direction z.

[0091] Furthermore, in the exemplary embodiment shown, the circuit board 52 is disposed between the terminal block rows 22a and 22b, particularly between the facing end limits 22aR and 22bL of the terminal block rows 22a and 22b. Additionally, in the exemplary embodiment shown, the circuit board 52 is disposed on the terminal block side 20V of the stack 20, particularly on the front side, and on the housing opening 10O.

[0092] In detail, the battery pack 1 includes a frame 59. The frame 59 supports the circuit board 52 and is disposed on the housing opening 10O. The individual terminal tabs 22, particularly the terminal tab portions 22T, and the circuit board 52 are positioned relative to each other by stacking the housing 10 and the frame 59.

[0093] Step a) includes: particularly after the arrangement of the bag-type unit 21, setting the frame 59 on the structural opening 10O, such that the unit terminal piece 22, particularly the terminal piece portion 22T and the circuit board 52 are positioned relative to each other by stacking the housing 10 and the frame 59.

[0094] In the exemplary embodiment shown, the individual connector 22, particularly the connector portion 22T, is provided on the housing opening 10O.

[0095] Furthermore, in the exemplary embodiment shown, the circuit board 52 is provided with a board plane 52E parallel to the terminal block side 20V. In particular, the board plane 52E corresponds to the terminal block plane 22E defined by the terminal block rows 22a, 22b, and especially by the parallel extending terminal block portions 22T.

[0096] Furthermore, in the exemplary embodiment shown, the circuit board 52 holds the measuring electronics 55. The measuring electronics 55 is configured to measure the voltage SP of the pouch cell 21.

[0097] Furthermore, in the exemplary embodiment shown, the electrical connection 52eV', particularly the electrical unit connector 52eV", between the circuit board 52, especially the measuring electronics 55 and the plurality of individual connectors 22, particularly the connector portion 22T, is the same and particularly short.

[0098] Furthermore, in the exemplary embodiment shown, the circuit board 52, particularly the measuring electronics 55, is electrically connected to a plurality of individual terminal blocks 22, particularly the terminal block portion 22T, via an electrical unit connector 52eV” and, in particular, via a solder connection 52S.

[0099] Step b) includes: soldering the electrical unit connector 52eV” to a plurality of unit terminals 22, particularly terminal portions 22T, especially in each case, for electrically connecting the electrical unit connector 52eV” to the unit terminals 22, particularly terminal portions 22T.

[0100] Furthermore, in the exemplary embodiment shown, the single-unit connector 52eV” is non-flexible.

[0101] Specifically, before step a), the individual connector 52eV” is connected at the corresponding end, particularly mechanically connected to the circuit board 52. Therefore, after step a) and before step b), the individual connector 52eV” is positioned at the corresponding other end on the individual connector 22, particularly on the connector portion 22T.

[0102] Furthermore, in the exemplary embodiments shown, the single connector 52eV”, particularly in each case, protrudes beyond the board edge 52R of the circuit board 52 in a direction x, -x orthogonal to the stacking direction z, at least one of the end limits 22aL, 22bR of the terminal block rows 22a, 22b.

[0103] Furthermore, in the exemplary embodiment shown, the individual connector 52eV” is positioned further away from the housing of the stack 20 or the pouch-type individual 21 than the tab portion 22T, and in particular the multiple tab portions 22T.

[0104] Furthermore, in the exemplary embodiment shown, battery pack 1 includes another circuit board 53, such as Figure 9 As shown. Another circuit board 53 is disposed on the terminal block side 20V, particularly the front side, further away from the stack 20 than circuit board 52, and in particular, another board plane 53E is parallel to the terminal block side 20V.

[0105] The other circuit board 53 is wider than the terminal blocks 22a and 22b.

[0106] In addition, another circuit board 53 holds power electronic device 56. Power electronic device 56 is configured to control, particularly automatically, in particular in response to a measured voltage SP, the output of drive power AL from battery pack 1 and / or the input of charging power LL to battery pack 1.

[0107] In the exemplary embodiment shown, the width of the other circuit board 53, particularly along the direction x orthogonal to the stacking direction z, corresponds to, and is particularly equivalent to, the width of the stack 20.

[0108] Furthermore, in the exemplary embodiment shown, the frame 59 and / or the circuit board 52 support another circuit board 53.

[0109] Furthermore, in the exemplary embodiment shown, another circuit board 53, particularly a power electronic device 56, is electrically connected to circuit board 52, particularly a measuring electronic device 55.

[0110] Furthermore, in the exemplary embodiment shown, another circuit board 53, particularly a power electronic device 56, is electrically connected to at least one power connector 29.

[0111] Specifically, circuit board 52, particularly measuring electronics 55, is electrically connected via electrical cell connector 52eV” to all cell terminals 22 except for the ground (GND) cell terminal 22 (cell potential 0) and the nominal voltage (NSP) cell terminal 22 of battery pack 1 (cell potential 10). Circuit board 52, particularly measuring electronics 55, is electrically connected via power connector 29 and another circuit board 53 to the ground cell terminal 22 and the nominal voltage NSP cell terminal 22. In alternative embodiments, circuit boards, particularly measuring electronics, may be electrically connected to the ground cell terminal and / or the nominal voltage cell terminal, particularly in each case, via electrical cell connectors.

[0112] Additionally, in the exemplary embodiment shown, the battery pack 1 includes a plurality of battery pack contacts 71, such as Figure 11As shown, battery pack contact 71 is configured for electrical connection between battery pack 1 and processing device 101, for supplying electrical drive power AL from battery pack 1 to processing device 101. Furthermore, another circuit board 53, specifically power electronic device 56, is electrically connected to battery pack contact 71.

[0113] Specifically, the battery pack contact 71 is disposed on the rear side 20R of the stack 20 opposite to the terminal block side of the stack 20, particularly the front side 20V, particularly on the stack housing 10, particularly on the housing wall or rear side wall 17.

[0114] Furthermore, in the exemplary embodiment shown, the battery pack 1 includes another circuit board 54, specifically yet another circuit board 54, such as Figure 10 As shown. Another circuit board 54, particularly yet another circuit board 54, is disposed on the terminal block side 20V, particularly the front side, further away from the stack 20 than circuit board 52, and particularly than another circuit board 53, particularly another board plane 54E, particularly yet another board plane parallel to the terminal block side 20V. Another circuit board 54, particularly yet another circuit board 54, holds user interface electronics 57 and transmission electronics 58. User interface electronics 57 is configured for interaction with a user, particularly automatic interaction. Transmission electronics 58 is configured for wireless transmission of at least one operating parameter and / or operating condition, particularly automatic wireless transmission.

[0115] In the exemplary embodiment shown, the interface electronics 57 is configured to output, in particular, to display the charging status of the battery pack 1.

[0116] Furthermore, in the exemplary embodiment shown, another circuit board 53 supports another circuit board 54, in particular yet another circuit board 54.

[0117] Additionally, in the exemplary embodiments shown, another circuit board 54, particularly yet another circuit board 54, particularly user interface electronics 57 and transmission electronics 58, is electrically connected to circuit board 52, particularly measurement electronics 55, and / or another circuit board 53, particularly power electronics 56.

[0118] Furthermore, in the exemplary embodiments shown, circuit board 52, and in particular at least one other circuit board 53, 54, particularly in each case have recesses 52O, 53O, 54O, especially through holes. Figure 14 As shown, recesses 52O, 53O, and 54O are configured to allow sensor line 30L to pass through, to allow the pouring compound 99 to flow, and / or to position circuit board 52, particularly relative to each other.

[0119] In the exemplary embodiment shown, the battery pack 1 has a pressure sensor 31, such as Figure 4 As shown. Pressure sensor 31 is configured to detect, in particular measure, the pressure acting on the pouch cell 21 along the stacking direction z. Additionally, battery pack 1 has an internal temperature sensor 36. Internal temperature sensor 36 is configured to measure the internal temperature of the stack 20. Sensor line 30L connects to pressure sensor 31 and internal temperature sensor 36. Circuit board 52, particularly measuring electronics 55, is electrically connected to pressure sensor 31 and internal temperature sensor 36 via sensor line 30L.

[0120] Furthermore, in the exemplary embodiment shown, the battery pack 1 has an external temperature sensor 37, such as Figure 11 and 12 As shown. An external temperature sensor 37 is configured to measure the external temperature of the stack 20. A circuit board 52, specifically measuring electronics 55, is electrically connected to the temperature sensor 37.

[0121] Furthermore, in the exemplary embodiment shown, the power electronic device 56 is configured to control the output of the drive power AL from the battery pack 1 and / or the input of the charging power LL to the battery pack 1 in response to detected, particularly measured, pressure, measured internal temperature and measured external temperature.

[0122] Furthermore, in the exemplary embodiment shown, the monomer terminal 22 and at least one circuit board 52, 53, 54 are enclosed by a particularly thermally conductive casting compound 99, specifically enclosed within a common casting block 98. The casting compound 99 reaches the housing of the bag-type monomer 21.

[0123] Furthermore, in the exemplary embodiment shown, the battery pack 1 includes a battery pack housing 80, such as Figure 13 and 14 As shown. The pouch cell 21, and in particular circuit board 52, measuring electronics 55, cell connector 52eV”, at least one power connector 29, stacked housing 10, frame 59, another circuit board 53, power electronics 56, another circuit board 54, and in particular yet another circuit board 54, user interface electronics 57, transmission electronics 58, pressure sensor 31, internal temperature sensor 36, external temperature sensor 37, and casting compound 99 are disposed within the battery pack housing 80.

[0124] Specifically, the battery pack housing 80 is configured as a mold for casting compound 99.

[0125] Furthermore, in the exemplary embodiment shown, the battery pack 1 includes at least one air cooling circuit 90, which includes a plurality of air inlet openings 91 and a plurality of air outlet openings 92 in the battery pack housing 80 for cooling airflow LS from the pouch cells 21, particularly the plurality of air inlet openings 91 on the stacked housing 10, to the plurality of air outlet openings 92 for cooling the pouch cells 21. An external temperature sensor 37 is disposed in the cooling circuit 90, between the plurality of air inlet openings 91 and the plurality of air outlet openings 92, particularly facing the plurality of air inlet openings 91 and / or the plurality of air outlet openings 92.

[0126] Furthermore, in the exemplary embodiment shown, the stacked housing 10 is thermally connected to the bag-type unit 21 and is thermally conductive.

[0127] Specifically, the stacked housing 10 is in physical contact with the bag-type monomer 21, particularly the housing walls 13, 14, 15, 16, and 17, and thermal paste is disposed between the bag-type monomer 21 and the housing walls 15, 16, and 17.

[0128] Additionally, in the exemplary embodiment shown, battery pack 1 has a maximum electric drive power MAL of 3 kW. In an alternative exemplary embodiment, the battery pack may have a minimum of 1 kW and / or a maximum of 10 kW of maximum electric drive power.

[0129] Furthermore, in the exemplary embodiment shown, battery pack 1 has a nominal voltage NSP of 36 V. In alternative exemplary embodiments, the battery pack may have a nominal voltage of at least 10 V and / or at most 100 V.

[0130] Furthermore, in the exemplary embodiment shown, battery pack 1 has a maximum energy content (MEI) of 337 Wh. In alternative exemplary embodiments, the battery pack may have a minimum energy content of 100 Wh and / or a maximum energy content of 1000 Wh.

[0131] Furthermore, in the exemplary embodiment shown, the battery pack 1 has a mass m1 of 2 kg. In alternative exemplary embodiments, the battery pack may have a minimum mass of 0.5 kg and / or a maximum mass of 10 kg.

[0132] Furthermore, in the exemplary embodiment shown, the battery pack 1 has a height 1H of 5 cm, particularly along the stacking direction z, a width 1B of 10 cm, particularly along the direction x, and a depth 1T of 15 cm, particularly along the direction y. In an alternative exemplary embodiment, the battery pack may have a height of at least 2.5 cm and / or at most 10 cm, and / or a width of at least 5 cm and / or at most 20 cm, and / or a depth of at least 7.5 cm and / or at most 30 cm.

[0133] Figure 1 A processing system 100 according to the present invention is shown. The processing system 100 includes a battery pack 1 and an electrically driven processing device 101. The battery pack 1 and the processing device 101 are configured to be electrically connected to each other, particularly to be electrically connected, for supplying electric drive power AL from the battery pack 1 to the processing device 101.

[0134] In detail, the processing device 101 has a battery housing 102. The battery housing 102 is configured to house the battery pack 1. Specifically, the battery pack 1 is housed therein.

[0135] exist Figure 1 In the illustration, the electrically driven processing device 101 is a saw 101', an abrasive cutter 101", or a blower device 101". In alternative exemplary embodiments, the processing device may be a pruner saw, a clearing saw, a brush cutter, hedge trimmers, hedge trimmers, leaf blowers, pruning shears, sweeping devices, sweeping rollers, sweeping brushes, lawnmowers, weeders, or lawn trimmers.

[0136] As is apparent from the illustrated and above-explained exemplary embodiments, the present invention provides a battery pack for supplying electric drive power to an electric drive processing device, a processing system including such a battery pack and an electric drive processing device, and a method for producing a battery pack for supplying electric drive power to an electric drive processing device, wherein the battery pack and the method each have improved properties.

Claims

1. Battery pack (1) for supplying electric drive power (AL) to an electrically driven process device (101), the battery pack (1) comprising: - a stack housing (10), wherein the stack housing (10) has a common housing opening (10O) defined by a housing rim (10R), and - a plurality of pouch cells (21) having a housing, wherein the pouch cells (21) have cell tabs (22) and are configured and arranged in a stack (20) within the stack housing (10) such that the cell tabs (22) at least with tab portions (22T) protrude beyond at least one edge portion (10RA) of the housing rim (10R) without any housing wall or cover being arranged between the tab portions and the housing on the common housing opening (10O), wherein the tab portions (22T) are directly electrically connected to each other only by a solder connection (22S), - at least one compensation element (60), wherein the at least one compensation element (60) is arranged in the stack (20) between adjacent ones of the pouch cells (21), wherein the at least one compensation element (60) extends across a major portion of a surface (21F) of the pouch cells (21) and is configured to adjust a height (20H) of the stack (20) over a compensation thickness (60D) of the at least one compensation element (60) to accommodate a distance (10A) between a first housing wall (13) and a second housing wall (14), - wherein the stack housing (10) is cuboid shaped and has at least four housing walls (13, 14, 15, 16, 17), wherein wall edges (13R, 14R, 15R, 16R) of four of the housing walls (13, 14, 15, 16, 17) define the housing opening (10O), the at least four housing walls comprising the first housing wall and the second housing wall, - wherein the stack housing (10) has the first housing wall (13) and the second housing wall (14), - wherein the second housing wall (14) is arranged opposite and with a distance (10A) to the first housing wall (13), - wherein the stack (20) is arranged between the first housing wall (13) and the second housing wall (14) and a height (20H) of the stack (20) along a stack direction (z) is limited by the first housing wall (13) and the second housing wall (14), - wherein the height (20H) is equal to the distance (10A), - wherein the stack housing (10) has a first housing portion (11) and a second housing portion (12), - wherein the first housing portion (11) comprises the first housing wall (13) and a third housing wall of the at least four housing walls, - wherein the second housing portion (12) comprises the second housing wall (14) and a fourth housing wall of the at least four housing walls, and - wherein the first housing portion (11) and the second housing portion (12) are arranged opposite each other. - wherein the first housing part (11) and the second housing part (12) are mechanically connected to each other by at least one welded connection (10S) and the fourth housing wall is arranged opposite and spaced apart from the third housing wall, none of the at least four housing walls overlapping another one of the at least four housing walls, - wherein the housing rim (10R) defines an opening plane (10E) of the housing opening (10O), and - wherein the tab portions (22T) extend parallel to the opening plane (10E) along a stacking direction of the plurality of pouch cells, - wherein the pouch cells (21) are configured and arranged in the stack (20) such that the cell tabs (22) are arranged in two tab columns (22a, 22b), wherein distanced end limits (22aL, 22bR) of the tab columns (22a, 22b) define an intermediate zone (22Z), and - wherein the battery (1) comprises a circuit board (52) holding measurement electronics configured for measuring voltages of all pouch cells of the plurality of pouch cells, wherein the circuit board (52) is arranged within the intermediate zone (22Z), wherein the circuit board (52) is arranged between facing end limits (22aR, 22bL) of the two tab columns (22a, 22b), and wherein, in each case, the circuit board (52) is electrically connected to a plurality of cell tabs (22) via electrical cell connectors by a welded connection (52S), and - in each case, the electrical cell connectors protrude beyond a board edge of the circuit board and are arranged further away from the stack or the housing of the pouch cells than the tab portions, and - wherein the cell tabs (22) protrude beyond the at least one rim portion (10RA) to such an extent that a common production step of the welded connections (22S, 10S, 52S) is allowed, and - wherein between cell tabs (22) of two immediately adjacent pouch cells (21) and between the tab portions (22T) of these cell tabs (22) and the rim portion (10RA) a space is formed for arranging a soldering base (150) and the soldering base (150) can be used for soldering the tab portions (22T), and wherein the soldering base (150) is removed from the battery after soldering, - wherein in each case the circuit board at least partially exposes or uncovers the tab columns.

2. The battery (1) according to claim 1, - wherein the common housing opening (10O) is the only housing opening for the cell tabs (22), and / or - wherein the pouch cells (21) are configured and arranged in the stack (20) such that the cell tabs (22) are arranged on a common tab side (20V) of the stack (20).

3. The battery pack (1) according to claim 1 or 2, the battery pack (1) comprising: - at least one electrical power connector (29), wherein the electrical power connector (29) is electrically connected, in particular directly electrically connected, to one of the tab portions (22T) by a solder connection (29S).

4. The battery pack (1) according to claim 1, the battery pack (1) comprising: - a frame (59), wherein the frame (59) supports the circuit board (52) and is arranged on the housing opening (10O), - wherein the cell tabs (22), in particular the tab portions (22T) and the circuit board (52), are positioned relative to each other by the stacked housing (10) and the frame (59).

5. The battery pack (1) according to claim 1 or 2, - wherein the battery pack (1) has a maximum electrical drive power (MAL) of at least 1 kW, in particular at least 2 kW, and / or at most 10 kW, in particular at most 5 kW, and / or - wherein the battery pack (1) has a nominal voltage (NSP) of at least 10 V, in particular at least 20 V, and / or at most 100 V, in particular at most 50 V, and / or - wherein the battery pack (1) has a maximum energy content (MEI) of at least 100 Wh, in particular at least 200 Wh, and / or at most 1000 Wh, in particular at most 500 Wh, and / or - wherein the battery pack (1) has a mass (m1) of at least 0.5 kg, in particular at least 1 kg, and / or at most 10 kg, in particular at most 5 kg, and / or - wherein the battery pack (1) has a height (1H) of at least 2.5 cm and / or at most 10 cm, and / or a width (1B) of at least 5 cm and / or at most 20 cm, and / or a depth (1T) of at least 7.5 cm and / or at most 30 cm.

6. A processing system (100), the processing system (100) comprising: - a battery pack (1) according to any of the preceding claims, and - an electrically driven processing device (101), - wherein the battery pack (1) and the processing device (101) are configured to be electrically connected to each other to supply the electrical drive power (AL) from the battery pack (1) to the processing device (101).

7. A method for producing a battery pack (1) for supplying an electrical drive power (AL) to an electrically driven processing device (101) according to any of claims 1 to 5, the method comprising the following steps: - providing a plurality of battery cells (2) according to any of claims 1 to 5, a) arranging a plurality of pouch cells (21) having a housing into a stack (20) within a stack housing (10), wherein the stack housing (10) has a common housing opening (10O) defined by a housing rim (10R), wherein the pouch cells (21) have cell tabs (22) and are configured such that the cell tabs (22) at least with tab portions (22T) protrude beyond at least one rim portion (10RA) of the housing rim (10R) without any housing wall or cover being arranged between the tab portions and the housing on the common housing opening (10O), and b) at a time after the arranging, soldering the tab portions (22T) for directly electrically connecting the tab portions (22T) to each other.

8. The method according to claim 7, - wherein the housing rim (10R) defines an opening plane (10E) of the housing opening (10O), - wherein the tab portions (22T) extend parallel to the opening plane (10E), and - wherein said step b) comprises: arranging a solder base (150) at least partially between one of the parallel extending tab portions (22T) and the rim portion (10RA) and soldering the tab portions (22T) by the solder base (150).

9. The method according to claim 7 or 8, - wherein the stack housing (10) has a first housing portion (11) and a second housing portion (12), wherein the first housing portion (11) comprises a first housing wall (13) and wherein the second housing portion (12) comprises a second housing wall (14), - wherein said step a) comprises: arranging the stack (20) on the first housing wall (13) and at a later time arranging the second housing wall (14) on the stack (20) such that the second housing wall (14) is arranged opposite to and with a distance (10A) from the first housing wall (13), facilitating the stack (20) being arranged between the first housing wall (13) and the second housing wall (14) and a height (20H) of the stack (20) in a stack direction (z) being limited by the first housing wall (13) and the second housing wall (14), - wherein the step b) comprises soldering the first housing portion (11) and the second housing portion (12) to directly mechanically connect the first housing portion (11) and the second housing portion (12) to each other.

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