Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, the battery device comprises a battery monomer, a flexible circuit board and a sleeve, the flexible circuit board is electrically connected with the battery monomer, the flexible circuit board comprises a body and a telescopic part connected with the body, and the telescopic part can be telescopically deformed along the length direction of the body; the telescopic part protrudes out of the body in the thickness direction of the body. And the sleeve is sleeved outside the telescopic part. In the battery device, the telescopic part can absorb the stress in the length direction of the flexible circuit board, and the sleeve sleeves the telescopic part, so that the telescopic part can be in contact with components such as a box body of the battery device, and the risk of damage to the flexible circuit board is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device and electrical equipment. Background Art

[0002] In the related art, batteries are widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars. The battery device may include a battery cell and a flexible circuit board, and the flexible circuit board may be arranged on one side of the battery cell. During the use of the battery device, the battery cell may swell, causing the position of the flexible circuit board to change and cause friction and scratches with other structural parts, resulting in a greater risk of damage to the flexible circuit board. Utility Model Content

[0003] In view of the above problems, the utility model provides a battery device and an electrical device, which can reduce the risk of damage to the flexible circuit board.

[0004] In a first aspect, the utility model provides a battery device, comprising a battery cell, a flexible circuit board and a sleeve, wherein the flexible circuit board is electrically connected to the battery cell, the flexible circuit board comprises a main body and a telescopic portion connected to the main body, the telescopic portion can be telescopically deformed along the length direction of the main body, and the telescopic portion protrudes from the main body along the thickness direction of the main body; the sleeve is sleeved outside the telescopic portion.

[0005] In the battery device of the above embodiment, the telescopic part can absorb the stress in the length direction of the flexible circuit board, and the sleeve is arranged outside the telescopic part, so that the telescopic part can be in contact with the box and other components of the battery device, reducing the risk of damage to the flexible circuit board.

[0006] In certain embodiments, the sleeve includes a first tube and a second tube detachably connected to the first tube, the first tube and the second tube together enclose a sleeve space, and the telescopic portion is accommodated in the sleeve space.

[0007] In the above technical solution, the first pipe and the second pipe are detachably connected, so that the sleeve is easy to install and the efficiency of the sleeve being arranged outside the telescopic part can be improved.

[0008] In some embodiments, the first tube and the second tube are connected by snap-fitting.

[0009] In the above technical solution, the first tube and the second tube are connected by snapping, which can improve the assembly efficiency of the first tube and the second tube.

[0010] In some embodiments, the first tube includes a first surrounding wall and a first snap-fit ​​wall connected to the first surrounding wall, the second tube includes a second surrounding wall and a second snap-fit ​​wall connected to the second surrounding wall, the first snap-fit ​​wall is snap-fitted to the second snap-fit ​​wall, and the first surrounding wall, the first snap-fit ​​wall, the second surrounding wall and the second snap-fit ​​wall together form the sleeve space.

[0011] In the above technical solution, the first locking wall and the second locking wall are locked and connected, so that the connection between the first tube and the second tube is stable. In addition, the first surrounding wall, the first locking wall, the second surrounding wall and the second locking wall together form the sleeve space, so that the sleeve can be sleeved outside the telescopic part.

[0012] In some embodiments, the first engaging wall includes a first connecting arm and a first hook, the first connecting arm is connected to the first surrounding wall, and the first hook is formed at one end of the first connecting arm away from the first surrounding wall. The second engaging wall includes a second connecting arm and a second hook, the second connecting arm is connected to the second surrounding wall, and the second hook is formed at one end of the second connecting arm away from the second surrounding wall, and the first hook engages with the second hook.

[0013] In the above technical solution, the first hook is engaged with the second hook, so that the first tube and the second tube can be engaged together.

[0014] In some embodiments, the first surrounding wall includes a first enclosure portion and a first connecting portion connected to the first enclosure portion, and the first enclosure portion arches from the first connecting portion toward a direction away from the second surrounding wall; and / or,

[0015] The second surrounding wall includes a second surrounding portion and a second connecting portion connected to the second surrounding portion, and the second surrounding portion arches from the second connecting portion toward a direction away from the first surrounding wall.

[0016] In the above technical solution, the first enclosure portion arches from the first connection portion toward a direction away from the second enclosure wall, and / or the second enclosure portion arches from the second connection portion toward a direction away from the first enclosure wall, so that the sleeve space is easier to form, which is conducive to enclosing the telescopic portion.

[0017] In some embodiments, the telescopic portion is corrugated along the length direction of the body.

[0018] In the above technical solution, the corrugated telescopic part can easily realize the telescopic function.

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

[0020] In the above technical solution, the sleeve is spaced apart from the battery cell, so that when the battery cell expands and deforms, the sleeve is less squeezed, thereby reducing the deformation of the sleeve and improving the protection of the telescopic part.

[0021] In some embodiments, the battery device includes an electrical component, the flexible circuit board includes an end connected to the telescopic portion, the end is located on a side of the telescopic portion away from the main body, the end is provided with a connector, and the connector is plugged into the electrical component.

[0022] In the above technical solution, the connector can electrically connect the flexible printed circuit board to other electrical components.

[0023] In a second aspect, the utility model provides an electrical device, comprising the battery device of the above embodiment.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a schematic diagram of the structure of a vehicle in some embodiments of the utility model;

[0027] Figure 2 It is a three-dimensional schematic diagram of a battery device in some embodiments of the utility model;

[0028] Figure 3 Schematic diagram of the internal structure of the battery device of some embodiments of the utility model;

[0029] Figure 4 This is one of the partial three-dimensional schematic diagrams of the battery device of some embodiments of the utility model;

[0030] Figure 5 The second partial three-dimensional schematic diagram of the battery device of some embodiments of the utility model;

[0031] Figure 6 It is a partial plan view of a battery device according to some embodiments of the present invention;

[0032] Figure 7 Schematic cross-sectional view of the sleeves of some embodiments of the utility model;

[0033] Figure 8 It is a schematic diagram of the exploded view of the sleeves of some embodiments of the utility model.

[0034] Description of reference numerals:

[0035] 100-battery device; 10-battery cell; 20-housing; 30-flexible circuit board; 31-main body; 32-telescopic part; 33-end; 40-sleeve; 41-first pipe; 411-first surrounding wall; 412-first engaging wall; 413-first connecting arm; 414-first hook; 415-first enclosure; 416-first connecting part; 42-second pipe; 421-second surrounding wall; 422-second engaging wall; 423-second connecting arm; 424-second hook; 425-second enclosure; 426-second connecting part; 43-sleeving space; 50-connector; 60-electrical parts; 1000-vehicle; 200-controller; 300-motor. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those generally understood by technicians in the technical field of the present invention; the terms used in the present invention and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0038] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "attachment" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The term "and / or" in the present invention is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the embodiments of the present invention, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present invention shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation on the present invention.

[0042] The term “plurality” used in the present invention refers to two or more (including two).

[0043] In the embodiments of the present invention, unless otherwise specified, all embodiments and optional embodiments of the present invention can be combined with each other to form a new technical solution.

[0044] In the embodiments of the present invention, unless otherwise specified, all technical features and optional technical features of the present invention can be combined with each other to form a new technical solution.

[0045] In the related art, batteries are widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars. The battery device may include a battery cell and a flexible circuit board, and the flexible circuit board may be arranged on one side of the battery cell. The flexible circuit board may transmit signals, for example, the flexible circuit board may transmit sampling signals such as the current of the battery cell.

[0046] Generally, the flexible circuit board is in the shape of a long strip, and the two ends of the flexible circuit board in the length direction are fixed. In this case, if the battery cell is deformed, it is easy to pull the flexible circuit board, causing the flexible circuit board to break or be damaged. To this end, the flexible circuit board can form a telescopic structure. When the flexible circuit board is pulled, the telescopic structure can absorb the pulling force on the flexible circuit board, reducing the risk of the flexible circuit board being damaged.

[0047] However, the telescopic portion generally protrudes from the surface of the flexible circuit board body. During the expansion and deformation of the battery cell, the telescopic portion moves in the thickness direction of the flexible circuit board, which is prone to friction and scratches with other structural parts such as the battery device box, making the telescopic portion easily damaged.

[0048] To this end, the utility model provides a battery device, which includes a battery cell, a flexible circuit board and a sleeve. The flexible circuit board is electrically connected to the battery cell. The flexible circuit board includes a main body and a telescopic part connected to the main body. The telescopic part can be telescopically deformed along the length direction of the main body, and the telescopic part protrudes from the main body along the thickness direction of the main body; the sleeve is sleeved outside the telescopic part.

[0049] In the battery device of the above embodiment, the telescopic part can absorb the stress in the length direction of the flexible circuit board, and the sleeve is arranged outside the telescopic part, so that the telescopic part can be in contact with the box and other components of the battery device, reducing the risk of damage to the flexible circuit board.

[0050] The embodiment of the utility model also provides an electric device using a battery device as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc.

[0051] In some embodiments, the battery device can be used in an energy storage device.

[0052] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the utility model.

[0053] Please refer to Figure 1 , the vehicle 1000 may be a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Further, the vehicle 1000 may be a commercial vehicle. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head, or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating, and operating power requirements of the vehicle 1000 during driving.

[0054] In some embodiments of the present invention, the battery device 100 can be used not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0055] See also Figure 2-Figure 3 In an embodiment of the present invention, a battery device 100 (Battery Apparatus) may include one or more battery assemblies for providing voltage and capacity. A battery assembly (Battery Cell Assembly) may include a plurality of battery cells 10, and the plurality of battery cells 10 are connected in series, in parallel, or in mixed connection through a busbar component. For example, a battery assembly (Battery Cell Assembly) is generally formed by arranging a plurality of battery cells 10; a battery assembly may be a battery module (Battery Module), and a battery module is formed by arranging and fixing a plurality of battery cells 10 to form an independent module. As an example, a battery module may be formed by bundling a plurality of battery cells 10 by cable ties.

[0056] In an embodiment of the utility model, the box body 20 of the battery device 100 may include a first box body and a second box body. The first box body and the second box body are buckled together so that a closed space is formed inside the box body 20 to accommodate the battery assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box body may be a top cover or a bottom plate. For example, the box body 20 may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that a closed space is formed inside the box body 20 to accommodate the battery assembly.

[0057] In the embodiment of the present invention, the box 20 can be used as a part of the chassis structure of the vehicle 1000. For example, part of the box 20 can become at least a part of the floor of the vehicle 1000, or part of the box 20 can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0058] In the embodiment of the utility model, the battery cell 10 can be a secondary battery, which refers to a battery cell 10 that can be used continuously by activating the active material by charging after the battery cell 10 is discharged; 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 hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiment of the utility model. The battery cell 10 can be a flat body, a rectangular parallelepiped or other shapes, which is not limited in the embodiment of the utility model.

[0059] See also Figure 3-Figure 6In the battery device 100 of the embodiment of the present application, the battery device 100 includes a battery cell 10, a flexible circuit board 30 and a sleeve 40. The flexible circuit board 30 is electrically connected to the battery cell 10. The flexible circuit board 30 includes a main body 31 and a telescopic portion 32 connected to the main body 31. The telescopic portion 32 can be telescopically deformed along the length direction of the main body 31. The telescopic portion 32 protrudes from the main body 31 along the thickness direction of the main body 31; the sleeve 40 is sleeved outside the telescopic portion 32.

[0060] Specifically, the battery cell 10 may include a shell and an electrode assembly, and the shell may protect the internal structure of the battery cell 10 to increase the life of the battery cell 10. The electrode assembly of the battery cell 10 may be a wound electrode assembly or a stacked electrode assembly. The electrode assembly may include a pole piece and a pole ear, and the electrode assembly may be formed by winding pole pieces, or by stacking pole pieces.

[0061] The flexible printed circuit 30 (FPC) is a component that can electrically connect two components. The body 31 of the flexible printed circuit 30 is the larger part of the flexible printed circuit 30. The body 31 is long and flat. The telescopic portion 32 is an integral structure with the body 31. The telescopic portion 32 can be wavy, or in other words, the telescopic portion 32 can be formed by folding a part of the flexible printed circuit 30, so that the telescopic portion 32 can be telescopically deformed along the length direction of the body 31. Since the telescopic portion 32 is formed by folding, the dimension of the telescopic portion 32 along the thickness direction of the body 31 is greater than the thickness of the body 31.

[0062] The sleeve 40 has a hollow structure, so that the flexible circuit board 30 can be inserted into the sleeve 40, and the telescopic part 32 can be accommodated in the sleeve 40. It should be noted that when the sleeve 40 is sleeved outside the telescopic part 32, the telescopic part 32 can still be telescopically deformed along the length direction of the body 31.

[0063] Therefore, in the battery device 100 of the above embodiment, the telescopic portion 32 can absorb the stress in the length direction of the flexible circuit board 30, and the sleeve 40 is sleeved outside the telescopic portion 32, so that the telescopic portion 32 can be in contact with the box body 20 and other components of the battery device 100, thereby reducing the risk of damage to the flexible circuit board 30.

[0064] See also Figure 5-Figure 8 In some embodiments, the sleeve 40 includes a first tube 41 and a second tube 42 detachably connected to the first tube 41 . The first tube 41 and the second tube 42 together form a sleeve space 43 , and the telescopic portion 32 is accommodated in the sleeve space 43 .

[0065] Specifically, the first tube 41 and the second tube 42 are two detachable parts of the sleeve 40, and the first tube 41 and the second tube 42 can protect the two sides of the telescopic part 32 along the thickness direction of the body 31. The first tube 41 and the second tube 42 can be made of wear-resistant materials, for example, at least one of the first tube 41 and the second tube 42 can be made of Teflon, rubber and other materials.

[0066] In the above technical solution, the first tube 41 and the second tube 42 are detachably connected, so that the sleeve 40 is easy to install, and the efficiency of the sleeve 40 being sleeved outside the telescopic part 32 can be improved.

[0067] In some embodiments, the first tube 41 and the second tube 42 are snap-fitted and connected. 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 be snap-fitted and connected through the snap-fit ​​structure.

[0068] In the above technical solution, the first tube 41 and the second tube 42 are buckled and connected, which can improve the assembly efficiency of the first tube 41 and the second tube 42.

[0069] See also Figure 7-Figure 8 In some embodiments, the first tube 41 includes a first surrounding wall 411 and a first locking wall 412 connected to the first surrounding wall 411, the second tube 42 includes a second surrounding wall 421 and a second locking wall 422 connected to the second surrounding wall 421, the first locking wall 412 is locked with the second locking wall 422, and the first surrounding wall 411, the first locking wall 412, the second surrounding wall 421 and the second locking wall 422 together form a set space 43.

[0070] Specifically, the first surrounding wall 411 and the second surrounding wall 421 are both sheet-like structures. The first engaging wall 412 and the second engaging wall 422 are also sheet-like structures as a whole. The first surrounding wall 411 and the second wall are respectively located on both sides of the telescopic portion 32 along the thickness direction of the body 31. The first engaging wall 412 and the first surrounding wall 411 can be an integral structure. The number of the first engaging walls 412 is two, and the two first engaging walls 412 are respectively located on the opposite sides of the first surrounding wall 411.

[0071] The second engaging wall 422 and the second surrounding wall 421 may be an integral structure. There are two second engaging walls 422 , which are located at two opposite sides of the second surrounding wall 421 .

[0072] In the above technical solution, the first locking wall 412 and the second locking wall 422 are locked together, so that the first tube 41 and the second tube 42 are stably connected. In addition, the first surrounding wall 411, the first locking wall 412, the second surrounding wall 421 and the second locking wall 422 together form a sleeve space 43, so that the sleeve 40 can be sleeved outside the telescopic part 32.

[0073] See also Figure 7-Figure 8 In some embodiments, the first locking wall 412 includes a first connecting arm 413 and a first hook 414, the first connecting arm 413 is connected to the first surrounding wall 411, and the first hook 414 is formed at one end of the first connecting arm 413 away from the first surrounding wall 411. The second locking wall 422 includes a second connecting arm 423 and a second hook 424, the second connecting arm 423 is connected to the second surrounding wall 421, and the second hook 424 is formed at one end of the second connecting arm 423 away from the second surrounding wall 421, and the first hook 414 is locked with the second hook 424.

[0074] Specifically, the first connecting arm 413 and the second connecting arm 423 may be in a sheet-like structure. The first connecting arm 413 and the second connecting arm 423 are both cantilever beam structures, or in other words, 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. In order to make the first engaging wall 412 and the second engaging wall 422 more efficient in engaging, the first connecting arm 413 and the second connecting arm 423 may be elastic, or in other words, the first connecting arm 413 and the second connecting arm 423 may be elastically deformed, so that the first engaging wall 412 and the second engaging wall 422 are more easily engaged together.

[0075] The first hook 414 is in a convex shape, and the first hook 414 and the first connecting arm 413 are an integral structure. Similarly, the second hook 424 is also in a convex shape, and the second hook 424 and the second connecting arm 423 are an integral structure.

[0076] In the above technical solution, the first hook 424 is engaged with the second hook 424, so that the first tube 41 and the second tube 42 can be engaged together.

[0077] See also Figure 7-Figure 8 In some embodiments, the first surrounding wall 411 includes a first enclosure portion 415 and a first connecting portion 416 connected to the first enclosure portion 415 , and the first enclosure portion 415 arches from the first connecting portion 416 in a direction away from the second surrounding wall 421 .

[0078] Specifically, the first connection portion 416 forms a side edge of the first surrounding wall 411, and the first connection portion 416 and the first enclosure portion 415 are an integral structure. Therefore, the first enclosure portion 415 arches from the first connection portion 416 in a direction away from the second surrounding wall 421, so that the sleeve space 43 is easier to form, which is conducive to the first pipe 41 and the second pipe 42 surrounding the telescopic portion 32.

[0079] See also Figure 7-Figure 8 In some embodiments, the second surrounding wall 421 includes a second surrounding portion 425 and a second connecting portion 426 connected to the second surrounding portion 425 , and the second surrounding portion 425 arches from the second connecting portion 426 in a direction away from the first surrounding wall 411 .

[0080] Specifically, the second connection portion 426 forms a side edge of the second surrounding wall 421, and the second connection portion 426 and the second enclosure portion 425 are an integral structure. Therefore, the second enclosure portion 425 arches from the second connection portion 426 in a direction away from the first surrounding wall 411, so that the sleeve space 43 is easier to form, which is conducive to the first pipe 41 and the second pipe 42 surrounding the telescopic portion 32.

[0081] See also Figure 5 In some embodiments, the telescopic portion 32 is corrugated along the length direction of the body 31. Specifically, the telescopic portion 32 has a plurality of folded portions, and the folded portions make the telescopic portion 32 corrugated. When the telescopic portion 32 is subjected to tension, the telescopic portion 32 stretches, and when the tension is removed, the telescopic portion 32 contracts. In this way, in the above technical solution, the corrugated telescopic portion 32 can easily achieve the telescopic function.

[0082] See also Figure 3 In some embodiments, the sleeve 40 is spaced apart from the battery cell 10. In other words, there is a gap between the sleeve 40 and the battery cell 10. In the above technical solution, the sleeve 40 is spaced apart from the battery cell 10, so that when the battery cell 10 expands and deforms, the sleeve 40 is less squeezed, thereby reducing the deformation of the sleeve 40 and improving the protection of the telescopic portion 32.

[0083] See also Figure 3 and Figure 5In some embodiments, the battery device 100 includes an electrical component 60, and the flexible circuit board 30 includes an end 33 connected to the telescopic portion 32, the end 33 is located on the side of the telescopic portion 32 away from the body 31, and the end 33 is provided with a connector 50, and the connector 50 is plugged with the electrical component 60. Specifically, the connector 50 can be connected to the electrical component 60 such as the circuit board of the battery device 100, and the electrical component 60 is, for example, a control motherboard, or a battery monitoring unit. Thus, the battery cell 10 is connected to the circuit board through the flexible circuit board 30 and the connector 50. In the above technical solution, the connector 50 can electrically connect the flexible circuit board 30 with the electrical component 60.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that: include: Battery cells; A flexible circuit board, the flexible circuit board is electrically connected to the battery cell, the flexible circuit board comprises a body and a telescopic portion connected to the body, the telescopic portion can be telescopically deformed along the length direction of the body, and the telescopic portion protrudes from the body along the thickness direction of the body; and A sleeve is sleeved outside the telescopic portion.

2. The battery device according to claim 1, characterized in that: The sleeve includes a first tube and a second tube detachably connected to the first tube. The first tube and the second tube together form a sleeve space, and the telescopic part is accommodated in the sleeve space.

3. The battery device according to claim 2, characterized in that: The first pipe and the second pipe are snap-fitted and connected.

4. The battery device according to claim 3, characterized in that: The first tube includes a first surrounding wall and a first locking wall connected to the first surrounding wall, the second tube includes a second surrounding wall and a second locking wall connected to the second surrounding wall, the first locking wall is locked with the second locking wall, and the first surrounding wall, the first locking wall, the second surrounding wall and the second locking wall together enclose the sleeve space.

5. The battery device according to claim 4, characterized in that: The first engaging wall includes a first connecting arm and a first hook, the first connecting arm is connected to the first surrounding wall, and the first hook is formed at one end of the first connecting arm away from the first surrounding wall. The second engaging wall includes a second connecting arm and a second hook, the second connecting arm is connected to the second surrounding wall, and the second hook is formed at one end of the second connecting arm away from the second surrounding wall, and the first hook engages with the second hook.

6. The battery device according to claim 4, characterized in that: The first surrounding wall comprises a first enclosure portion and a first connecting portion connected to the first enclosure portion, the first enclosure portion arches from the first connecting portion toward a direction away from the second surrounding wall; and / or, The second surrounding wall includes a second surrounding portion and a second connecting portion connected to the second surrounding portion, and the second surrounding portion arches from the second connecting portion toward a direction away from the first surrounding wall.

7. The battery device according to claim 1, characterized in that: The telescopic portion is corrugated along the length direction of the body.

8. The battery device according to claim 1, characterized in that: The sleeve abuts against the battery cell.

9. The battery device according to claim 1, characterized in that: The battery device includes an electrical component, the flexible circuit board includes an end connected to the telescopic part, the end is located on a side of the telescopic part away from the main body, the end is provided with a connector, and the connector is plugged into the electrical component.

10. An electrical device, characterized in that: A battery device comprising any one of claims 1 to 9.

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