Battery device and power-consuming device

Abstract

Battery device, the battery device comprising the following: a battery cell; a flexible printed circuit board, wherein the flexible printed circuit board is electrically connected to the battery cell, the flexible printed circuit board comprising a main body and a telescopic section connected to the main body, the telescopic section being telescopic and deformable along a longitudinal direction of the main body, and the telescopic section projecting from the main body along a thickness direction of the main body; and a sleeve tube, wherein the sleeve tube is attached to an outside of the telescopic section.

Description

CROSS-REFERENCE TO RELATED REGISTRATION

[0001] The present application claims priority and interest in patent application no. 202520284666.8, which was filed with the State Intellectual Property Administration of China on February 21, 2025, and is incorporated in full by reference into the present application. TECHNICAL AREA

[0002] The present application relates to the technical field of batteries, in particular a battery device and a power-consuming device. STATE OF THE ART

[0003] In related technologies, batteries are frequently used in electric vehicles such as e-bikes, e-motorcycles, and electric cars. The battery device can comprise a battery cell and a flexible printed circuit board (PCB), with the PCB positioned on one side of the battery cell. During use, the battery cell can expand, causing the position of the flexible PCB to shift and resulting in friction and contact with other structural components, thus increasing the risk of damage to the PCB. CONTENT OF THE PRESENT INVENTION

[0004] In view of the above problems, the present application provides a battery device and a power-consuming device that can reduce the risk of damage to a flexible printed circuit board.

[0005] A first aspect of the present application provides a battery device, wherein the battery device comprises a battery cell, a flexible printed circuit board and a sleeve tube, wherein the flexible printed circuit board is electrically connected to the battery cell, wherein the flexible printed circuit board comprises a main body and a telescopic section connected to the main body, wherein the telescopic section is telescopic and deformable along a longitudinal direction of the main body, and wherein the telescopic section projects from the main body along a thickness direction of the main body; wherein the sleeve tube is attached to an outside of the telescopic section.

[0006] In the battery device of the above embodiment, the telescopic section absorbs the stress in the longitudinal direction of the flexible circuit board, and the sleeve tube is attached to the outside of the telescopic section. In this way, the telescopic section can be in contact with a component, such as a housing of the battery device, thereby reducing the risk of damage to the flexible circuit board.

[0007] In some embodiments, the sleeve tube comprises a first tube and a second tube which is detachably connected to the first tube, wherein the first tube and the second tube together enclose a mounting space, the telescopic section being received in the mounting space.

[0008] In the above technical solution, the first tube and the second tube are detachably connected, which facilitates the installation of the sleeve tube and can improve the efficiency of attaching the sleeve tube to the outside of the telescopic section.

[0009] In some embodiments, the first tube and the second tube snap together.

[0010] In the above technical solution, the first pipe and the second pipe snap into each other, thus improving the efficiency of assembling the first pipe and the second pipe.

[0011] In some embodiments, the first tube comprises a first enclosing wall and a first snap-in wall connected to the first enclosing wall, wherein the second tube comprises a second enclosing wall and a second snap-in wall connected to the second enclosing wall, wherein the first snap-in wall snaps into the second snap-in wall, wherein the first enclosing wall, the first snap-in wall, the second enclosing wall and the second snap-in wall together enclose the insertion space.

[0012] In the above technical solution, the first locking wall engages with the second locking wall, so that the first tube and the second tube are stably connected, and furthermore, the first surrounding wall, the first locking wall, the second surrounding wall and the second locking wall together enclose the mounting space, so that the sleeve tube can be mounted on the outside of the telescopic section.

[0013] In some embodiments, the first snap-in wall comprises a first connecting arm and a first snap hook, wherein the first connecting arm is connected to the first enclosing wall, wherein the first snap hook is formed at an end of the first connecting arm facing away from the first enclosing wall, wherein the second snap-in wall comprises a second connecting arm and a second snap hook, wherein the second connecting arm is connected to the second enclosing wall, wherein the second snap hook is formed at an end of the second connecting arm facing away from the second enclosing wall, and wherein the first snap hook engages with the second snap hook.

[0014] In the above technical solution, the first snap hook engages with the second snap hook, allowing the first tube and the second tube to lock into each other.

[0015] In some embodiments, the first enclosing wall comprises a first enclosing section and a first connecting section connected to the first enclosing section, wherein the first enclosing section is curved away from the first connecting section in a direction pointing away from the second enclosing wall; and / or wherein the second enclosure wall comprises a second enclosure section and a second connecting section connected to the second enclosure section, wherein the second enclosure section is arched away from the second connecting section in a direction away from the first enclosure wall.

[0016] In the above technical solution, the first enclosure section is curved away from the first connecting section in a direction pointing away from the second enclosure wall, and / or the second enclosure section is curved away from the second connecting section in a direction pointing away from the first enclosure wall to facilitate the formation of the mounting space, which is conducive to enclosing the telescopic section.

[0017] In some embodiments, the telescopic section is shaped in a wave-like manner along the longitudinal direction of the main body.

[0018] With the above technical solution, it is easy to achieve the telescoping function for the wave-shaped telescope section.

[0019] In some embodiments, the sleeve tube is spaced apart from the battery cell.

[0020] In the above technical solution, the sleeve tube is spaced away from the battery cell, so that less pressure is exerted on the sleeve tube when the battery cell expands and deforms, thereby reducing the deformation of the sleeve tube and increasing the protective force on the telescopic section.

[0021] In some embodiments, the battery device comprises an electrical element, wherein the flexible circuit board includes an end section connected to the telescopic section, the end section being located on a side of the telescopic section facing away from the main body, the end section being provided with a connector, the connector being inserted into the electrical element.

[0022] In the above technical solution, the connector can enable the flexible printed circuit board to be electrically connected to other electrical elements.

[0023] A second aspect of the present application provides a power-consuming device comprising a battery device according to the embodiments above.

[0024] Further aspects and advantages of the present application are partly mentioned in the following description, partly they result from the following description or become known through the application of the present application. BRIEF DESCRIPTION OF THE DRAWING

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understandable from the description of the exemplary embodiments in conjunction with the following attached drawings, wherein: Fig. Figure 1 shows a schematic representation of the structure of a vehicle according to some embodiments of the present application; Fig. Figure 2 shows a three-dimensional schematic representation of a battery device according to some embodiments of the present application; Fig. Figure 3 shows a schematic representation of the internal structure of the battery device according to some embodiments of the present application; Fig. Figure 4 shows a partially three-dimensional schematic representation I of the battery device according to some embodiments of the present application; Fig. Figure 5 shows a partially three-dimensional schematic representation II of the battery device according to some embodiments of the present application; Fig. Figure 6 shows a partially schematic plan view of the battery device according to some embodiments of the present application; Fig. Figure 7 shows a schematic sectional view of a sleeve tube according to some embodiments of the present application; Fig. Figure 8 shows a schematic disassembly representation of the sleeve tube according to some embodiments of the present application.

[0026] Reference symbol list: DETAILED DESCRIPTION

[0027] The technical solution in the embodiments of the present application is explained clearly below, so that the purpose, the technical solutions, and the advantages of the embodiments of the present application, in conjunction with the attached drawings, become clearer. Obviously, the described embodiments do not represent all embodiments, but only a subset of those of the present application. Based on the embodiments of the present application, all other embodiments that could be obtained by a person skilled in the art without inventive step fall within the scope of protection of the present application.

[0028] All technical and scientific terms used in this application have the same meaning as they are generally understood by those skilled in the art in the field to which this application relates, unless otherwise defined. The terms used in the description of this application serve only to describe certain embodiments and are not intended to limit the scope of this application. The expressions "comprise" and "have" and all variations thereof in the description and claims of this application and in the preceding description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc., in the description and claims of this application or in the drawings mentioned above serve to distinguish different objects and not to describe any particular sequence or priority.

[0029] The reference to "exemplarities" in the present application means that certain features, structures, or properties described in connection with exemplary embodiments may be included in at least one exemplary embodiment of the present application. The presence of the expression in different places in the description does not necessarily refer to the same exemplary embodiment, nor does it constitute a separate or alternative exemplary embodiment that mutually excludes other exemplary embodiments.

[0030] In the description of this application, it should be noted that the terms, e.g., "mounted," "connected," "attached," are to be understood broadly, unless expressly stated otherwise and limited, e.g., as either a permanent connection, a detachable connection, or a connection in one piece; a direct connection, or an indirect connection via an intermediate medium, or a connection within two elements. The specific meaning of the above terms in this application is clear to a person competent in the field.

[0031] The term “and / or” in the present application merely describes an associative relationship between the associated objects and indicates that three types of relationships are possible, e.g., A and / or B, which can mean that A exists alone, that both A and B exist, and that B exists alone. Furthermore, the symbol “ / ” in the present application generally indicates that the associated objects are in an “or” relationship.

[0032] In the embodiments of the present application, the same symbols denote the same parts, and for the sake of simplicity, detailed descriptions of the same parts in different embodiments are omitted. The dimensions (thickness, length, width, etc.) of the various components in the embodiments of the present application and the overall thickness, length, width, etc., of the integrated device shown in the accompanying drawings are merely exemplary and are not intended to limit the present application.

[0033] The term ‘multiple’ as used in the present application refers to more than two (including two).

[0034] Unless expressly stated otherwise, in the embodiments described in the present application, all embodiments and optional embodiments of the present application may be combined to form new technical solutions.

[0035] In the embodiments of the present application, unless expressly stated otherwise, all technical features of the present application as well as optional technical features may be combined to form a new technical solution.

[0036] In related technologies, batteries are frequently used in electric vehicles such as e-bikes, e-motorcycles, and electric cars. The battery device can comprise a battery cell and a flexible printed circuit board (PCB), with the PCB positioned on one side of the battery cell. The PCB can transmit signals; for example, it can transmit a sampling signal such as the current of a battery cell.

[0037] Generally, the flexible printed circuit board (PCB) has the form of an elongated strip, with both ends fixed along its length. In this case, the flexible PCB can easily be pulled out if the battery cell is deformed, leading to damage such as breakage. Therefore, the flexible PCB can be shaped into a telescopic structure so that when it is pulled, the telescopic structure absorbs the tensile force, thus reducing the risk of the flexible PCB being torn off.

[0038] However, the telescopic section generally protrudes from the surface of the main body of the flexible printed circuit board. During the expansion and deformation of the battery cell, the telescopic section moves in the thickness direction of the flexible printed circuit board, which can lead to friction and cuts with other structural elements, such as the battery housing, making the telescopic section susceptible to damage.

[0039] Therefore, the present application provides a battery device comprising a battery cell, a flexible printed circuit board and a sleeve tube, wherein the flexible printed circuit board is electrically connected to the battery cell, wherein the flexible printed circuit board comprises a main body and a telescopic section connected to the main body, wherein the telescopic section is telescopic and deformable along a longitudinal direction of the main body, and wherein the telescopic section projects from the main body along a thickness direction of the main body; wherein the sleeve tube is attached to an outside of the telescopic section.

[0040] In the battery device of the above embodiment, the telescopic section absorbs the stress in the longitudinal direction of the flexible circuit board, and the sleeve tube is attached to the outside of the telescopic section. In this way, the telescopic section can be in contact with a component, such as a housing of the battery device, thereby reducing the risk of damage to the flexible circuit board.

[0041] The embodiment of the present application also provides a power-consuming device that uses a battery as an energy source. The power-consuming device can be, among other things, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, an electric bicycle, an electric vehicle, a ship, and the like. Electric toys can include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric boat toys, and electric airplane toys, etc.

[0042] In some embodiments, the battery device can be used for an energy storage device.

[0043] For the sake of simplicity, the following embodiments are presented using the power-consuming device in an embodiment of the present application as an example for a vehicle 1000.

[0044] As in Fig. As shown in Figure 1, the vehicle 1000 can be a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, a supercharged vehicle, and the like. Furthermore, the vehicle 1000 can be a utility vehicle. The vehicle 1000 is equipped internally with a battery device 100. The battery device 100 can be located on the underside, at the front, or at the rear of the vehicle 1000. The battery device 100 can be used to supply power to the vehicle 1000; for example, the battery device 100 can be used as an operating power source for the vehicle 1000. The vehicle 1000 can also include a control unit 200 and a motor 300, the control unit 200 serving to control the battery device 100 to supply energy to the motor 300, for example, to meet the operating energy requirements of the vehicle 1000 for starting, navigation, and driving.

[0045] In some embodiments of the present application, the battery device 100 can be used not only as an operating energy source for the vehicle 1000, but also as a propulsion energy source for the vehicle 1000, instead of or partially instead of heating oil or natural gas to provide propulsion energy for the vehicle 1000.

[0046] As in Fig. As shown in Figures 2 and 3, the battery apparatus 100 in the embodiment of the present application can comprise one or more battery assemblies to provide a voltage and capacity. The battery assembly can comprise a plurality of battery cells 10, wherein the plurality of battery cells 10 are connected in series, parallel, or in a mixed configuration by a converging element. For example, the battery assembly is typically formed by arranging a plurality of battery cells 10; the battery assembly can be a battery module, wherein the battery module comprises a plurality of battery cells 10 arranged and secured to form a single module. For example, the battery module can be formed by joining the multiple battery cells 10 together.

[0047] In the embodiments of the present application, the battery device 100 comprises a box 20, wherein the box 20 may comprise a first box and a second box. The first box and the second box are attached to one another such that an enclosed space is formed inside the box 20, which accommodates the battery assembly. "Enclosed" here means covered or sealed, and this space may be sealed or unsealed. The first box may be a top cover or a bottom plate. For example, the box 20 may comprise a top cover, a frame, and a bottom plate. The top cover and the bottom plate are each connected to the frame, so that an enclosed space is formed inside the box 20, in which the battery assembly is accommodated.

[0048] In the embodiments of the present application, the box 20 can be part of a chassis structure of the vehicle 1000. For example, parts of the box 20 can be at least part of a floor of the vehicle 1000, or parts of the box 20 can be at least part of a cross member and a longitudinal member of the vehicle.

[0049] In the embodiments of the present application, the battery cell 10 can be a secondary battery, which is a battery cell 10 that can be recharged after the battery cell 10 has been discharged, so that the active material can be reactivated and reused. The battery cell 10 can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium-metal battery, a sodium-metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto. The battery cell 10 can be flat, rectangular, or otherwise shaped, etc., and the embodiments of the present application are limited thereto to requirements of

[0050] As in Fig. 3 to Fig. Figure 6 shows that in the battery device 100 of the embodiments of the present application, the battery device 100 comprises a battery cell 10, a flexible circuit board 30 and a sleeve tube 40, wherein the flexible circuit board 30 is electrically connected to the battery cell 10, wherein the flexible circuit board 30 comprises a main body 31 and a telescopic section 32 connected to the main body 31, wherein the telescopic section 32 is telescopically extendable and deformable along a longitudinal direction of the main body 31, and wherein the telescopic section 32 projects out of the main body 31 along a thickness direction of the main body 31; wherein the sleeve tube 40 is attached to an outer surface of the telescopic section 32.

[0051] In particular, the battery cell 10 can comprise a housing and an electrode assembly, and the housing can protect the internal structure of the battery cell 10 and improve its service life. The electrode assembly of the battery cell 10 can be a wound electrode assembly or a stacked electrode assembly. The electrode assembly can include both an electrode foil and an electrode tab, and the electrode assembly can be wound from the electrode foil or stacked from the electrode foil.

[0052] A flexible printed circuit board (FPC) 30 is a component that can electrically connect two other components. The main body 31 of the flexible printed circuit board 30 is the larger part of the board. The main body 31 has the shape of an elongated flat strip. The telescopic section 32 is formed integrally with the main body 31, and the telescopic section 32 can be corrugated, or alternatively, the telescopic section 32 can be formed by folding a portion of the flexible printed circuit board 30, such that the telescopic section 32 is telescopic and deformable along the longitudinal direction of the main body 31. Since the telescopic section 32 is formed by folding, its size along the thickness direction of the main body 31 is greater than the thickness of the main body 31.

[0053] The sleeve tube 40 has a hollow structure, allowing the flexible circuit board 30 to pass through it and the telescopic section 32 to be accommodated within it. It should be noted that even when the sleeve tube 40 is attached to the outside of the telescopic section 32, the telescopic section 32 remains extendable and deformable along the longitudinal direction of the main body 31.

[0054] Therefore, in the battery device 100 of the above embodiment, the telescopic section 32 absorbs the stress in the longitudinal direction of the flexible circuit board 30, and the sleeve tube 40 is attached to the outside of the telescopic section 32. In this way, the telescopic section 32 can be in contact with a component, such as a box 20 of the battery device 100, thereby reducing the risk of damage to the flexible circuit board 30.

[0055] As in Fig. 5 to Fig. Figure 8 shows that in some embodiments the sleeve tube 40 comprises a first tube 41 and a second tube 42 which is detachably connected to the first tube 41, wherein the first tube 41 and the second tube 42 together enclose a mounting space 43, wherein the telescopic section 32 is received in the mounting space 43.

[0056] In particular, the first tube 41 and the second tube 42 are two detachable parts of the sleeve tube 40, and the first tube 41 and the second tube 42, respectively, can protect the two sides of the telescope section 32 along the thickness direction of the main body 31. The first tube 41 and the second tube 42 can be made of a wear-resistant material; for example, at least one of the first tubes 41 and the second tube 42 can be made of a material such as Teflon, rubber, or the like.

[0057] In the above technical solution, the first tube 41 and the second tube 42 are detachably connected, which facilitates the installation of the sleeve tube 40 and can improve the efficiency of attaching the sleeve tube 40 to the outside of the telescope section 32.

[0058] In some embodiments, the first tube 41 and the second tube 42 snap into each other. For example, the first tube 41 and the second tube 42 have a snap-fit ​​structure, and the first tube 41 and the second tube 42 can snap into each other by means of the snap-fit ​​structure.

[0059] In the above technical solution, the first tube 41 and the second tube 42 snap into each other, thus improving the efficiency of assembling the first tube 41 and the second tube 42.

[0060] As in Fig. 7 to Fig. As shown in Figure 8, in some embodiments the first tube 41 comprises a first enclosing wall 411 and a first snap-in wall 412 connected to the first enclosing wall 411, wherein the second tube 42 comprises a second enclosing wall 421 and a second snap-in wall 422 connected to the second enclosing wall 421, wherein the first snap-in wall 412 snaps into the second snap-in wall 422, wherein the first enclosing wall 411, the first snap-in wall 412, the second enclosing wall 421 and the second snap-in wall 422 together enclose the mounting space 43.

[0061] In particular, the first circumferential wall 411 and the second circumferential wall 421 are both sheet-like structures. The first locking wall 412 and the second locking wall 422 also have a sheet-like structure as a whole. The first circumferential wall 411 and the second circumferential wall are each located on both sides of the telescope section 32 along the thickness direction of the main body 31. The first locking wall 412 and the first circumferential wall 411 can be a single-piece structure. There are two first locking walls 412, and the two first locking walls 412 are located on opposite sides of the first circumferential wall 411.

[0062] The second snap-in wall 422 and the second perimeter wall 421 can form a single-piece structure. There are two second snap-in walls 422, and these two second snap-in walls 422 are located on opposite sides of the second perimeter wall 421.

[0063] In the above technical solution, the first locking wall 412 engages with the second locking wall 422, so that the first tube 41 and the second tube 42 are stably connected, and furthermore, the first surrounding wall 411, the first locking wall 412, the second surrounding wall 421 and the second locking wall 422 together enclose the mounting space 43, so that the sleeve tube 40 can be mounted on the outside of the telescopic section 32.

[0064] As in Fig. 7 to Fig. 8, in some embodiments, the first snap-in wall 412 comprises a first connecting arm 413 and a first snap hook 414, wherein the first connecting arm 413 is connected to the first enclosing wall 411, wherein the first snap hook 414 is formed at one end of the first connecting arm 413 facing away from the first enclosing wall 411, wherein the second snap-in wall 422 comprises a second connecting arm 423 and a second snap hook 424, wherein the second connecting arm 423 is connected to the second enclosing wall 421, wherein the second snap hook 424 is formed at one end of the second connecting arm 423 facing away from the second enclosing wall 421, and wherein the first snap hook 414 engages in the second snap hook 424.

[0065] In particular, the first connecting arm 413 and the second connecting arm 423 are both leaf-like structures. The first connecting arm 413 and the second connecting arm 423 are both self-supporting support structures, or alternatively, one end of the first connecting arm 413 and the second connecting arm 423 is a fixed end and the other end is a free end. To allow the first snap-in wall 412 and the second snap-in wall 422 to snap together more efficiently, the first connecting arm 413 and the second connecting arm 423 can be elastic, or alternatively, the first connecting arm 413 and the second connecting arm 423 can be elastically deformable, so that the first snap-in wall 412 and the second snap-in wall 422 snap together more easily.

[0066] The first snap hook 414 has the shape of a bump, and the first snap hook 414 is formed in one piece with the first connecting arm 413. The second snap hook 424 also has the shape of a bump, and the second snap hook 424 is formed in one piece with the second connecting arm 423.

[0067] In the above technical solution, the first snap hook engages with the second snap hook 424, so that the first tube 41 and the second tube 42 can snap into each other.

[0068] As in Fig. 7 to Fig. Figure 8 shows that in some embodiments the first enclosing wall 411 comprises a first enclosing section 415 and a first connecting section 416 connected to the first enclosing section 415, wherein the first enclosing section 415 is curved away from the first connecting section 416 in a direction pointing away from the second enclosing wall 421.

[0069] In particular, the first connecting section 416 forms an edge on one side of the first enclosure wall 411, and the first connecting section 416 and the first enclosure section 415 are formed as a single piece. Therefore, the first enclosure section 415 is curved away from the first connecting section 416 in a direction pointing away from the second enclosure wall 421, which facilitates the formation of the insertion space 43 and allows the first tube 41 and the second tube 42 to enclose the telescopic section 32.

[0070] As in Fig. 7 to Fig. 8 shown, in some embodiments the second enclosing wall 421 comprises a second enclosing section 425 and a second connecting section 426 connected to the second enclosing section 425, wherein the second enclosing section 425 is curved away from the second connecting section 426 in a direction pointing away from the first enclosing wall 411.

[0071] In particular, the second connecting section 426 forms an edge on one side of the second enclosure wall 421, and the second connecting section 426 and the second enclosure section 425 are formed as a single piece. Therefore, the second enclosure section 425 is curved away from the second connecting section 426 in a direction pointing away from the first enclosure wall 411, which facilitates the formation of the insertion space 43 and allows the first tube 41 and the second tube 42 to enclose the telescopic section 32.

[0072] As in Fig. As shown in Figure 5, in some embodiments the telescopic section 32 has a wave-like shape along the longitudinal direction of the main body 31. In particular, the telescopic section 32 has a plurality of folded sections arranged in a folded position, and these folded sections cause the telescopic section 32 to have a wave-like shape. The telescopic section 32 extends when subjected to a tensile force and contracts after the tensile force is removed. Thus, with the above technical solution for the wave-shaped telescopic section 32, it is easy to achieve the telescoping function.

[0073] As in Fig. Figure 3 shows that in some embodiments, the sleeve tube 40 is spaced apart from the battery cell 10. Alternatively, a gap may be present between the sleeve tube 40 and the battery cell 10. In the above technical solution, the sleeve tube 40 is spaced apart from the battery cell 10, so that less pressure is exerted on the sleeve tube 40 when the battery cell 10 expands and deforms, thereby reducing the deformation of the sleeve tube 40 and increasing the protective force on the telescopic section 32.

[0074] As in Fig. 3 and Fig.As shown in Figure 5, in some embodiments the battery device 100 comprises an electrical element 60, wherein the flexible circuit board 30 includes an end section 33 connected to the telescopic section 32, the end section 33 being located on a side of the telescopic section 32 facing away from the main body 31, and the end section 33 being provided with a connector 50, the connector 50 being inserted into the electrical element 60. In particular, the connector 50 can be connected to an electrical element 60, such as a circuit board of the battery device 100, wherein the electrical element 60 is, for example, a control board, a battery monitoring unit, or the like. This connects the battery cell 10 to the circuit board via the flexible circuit board 30 and the connector 50.In the above technical solution, the connector 50 can enable the flexible printed circuit board 30 to be electrically connected to the electrical element 60.

[0075] In this application, the terms “an embodiment”, “some embodiments”, “schematic example”, “specific example”, or “a particular example”, “an embodiment”, “some examples”, “exemplary”, “specific examples”, or “some examples” shall mean that certain features, structures, materials, or properties described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this description, the schematic expressions of the above terms need not refer to the same embodiments or examples. Furthermore, the described specific features, structures, materials, or properties may be combined appropriately in one or more embodiments.

[0076] Although embodiments of the present application have been illustrated and described, it will be clear to the person skilled in the art that numerous variations, modifications, substitutions, and changes can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents. REFERENCE MARK LIST 100 battery device 10 battery cells 20 boxes 30 flexible printed circuit boards 31 Main body 32 Telescope section 33 Final section 40 sleeve tubes 41 first pipe 411 first perimeter wall 412 first locking wall 413 first connecting arm 414 first snap hook 415 first section 416 first connecting section 42 second pipe 421 second perimeter wall 422 second snap-in wall 423 second connecting arm 424 second snap hook 425 second section 426 second connecting section 43 Add-on space 50 connectors 60 electrical element 1000 vehicles 200 control unit 300 engine.

Claims

[1] Battery device, the battery device comprising: a battery cell; a flexible printed circuit board, wherein the flexible printed circuit board is electrically connected to the battery cell, the flexible printed circuit board comprising a main body and a telescopic section connected to the main body, the telescopic section being telescopic and deformable along a longitudinal direction of the main body, and the telescopic section projecting from the main body along a thickness direction of the main body; and a sleeve tube, wherein the sleeve tube is attached to an outside of the telescopic section. [2] Battery device according to claim 1, wherein the sleeve tube comprises a first tube and a second tube which is detachably connected to the first tube, wherein the first tube and the second tube together enclose a mounting space, wherein the telescopic section is received in the mounting space. [3] Battery device according to claim 2, wherein the first tube and the second tube snap into each other. [4] Battery device according to claim 3, wherein the first tube comprises a first enclosing wall and a first snap-in wall connected to the first enclosing wall, wherein the second tube comprises a second enclosing wall and a second snap-in wall connected to the second enclosing wall, wherein the first snap-in wall snaps into the second snap-in wall, wherein the first enclosing wall, the first snap-in wall, the second enclosing wall and the second snap-in wall together enclose the mounting space. [5] Battery device according to claim 4, wherein the first snap-in wall comprises a first connecting arm and a first snap hook, wherein the first connecting arm is connected to the first enclosing wall, wherein the first snap hook is formed at an end of the first connecting arm facing away from the first enclosing wall, wherein the second snap-in wall comprises a second connecting arm and a second snap hook, wherein the second connecting arm is connected to the second enclosing wall, wherein the second snap hook is formed at an end of the second connecting arm facing away from the second enclosing wall, wherein the first snap hook engages in the second snap hook. [6] Battery device according to claim 4 or 5, wherein the first enclosing wall comprises a first enclosing section and a first connecting section connected to the first enclosing section, wherein the first enclosing section is curved away from the first connecting section in a direction away from the second enclosing wall; and / or wherein the second enclosing wall comprises a second enclosing section and a second connecting section connected to the second enclosing section, wherein the second enclosing section is curved away from the second connecting section in a direction away from the first enclosing wall. [7] Battery device according to one of claims 1 to 6, wherein the telescopic section is shaped in a wave-like manner along the longitudinal direction of the main body. [8] Battery device according to one of claims 1 to 7, wherein the sleeve tube rests against a battery cell. [9] Battery device according to any one of claims 1 to 8, wherein the battery device comprises an electrical element, wherein the flexible circuit board comprises an end section connected to the telescopic section, wherein the end section is located on a side of the telescopic section facing away from the main body, wherein the end section is provided with a connector, wherein the connector is inserted into the electrical element. [10] Power-consuming device, wherein the power-consuming device comprises a battery device according to any one of claims 1 to 9.

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