Filler assembly, battery pack, and powered device

Abstract

The utility model discloses a kind of filling assembly, battery pack and electric equipment, filling assembly is used to fill the gap between box and battery cell group, filling assembly includes elastic filler, and elastic filler includes elastic member and isolator, and isolator is located at at least one side of elastic member. Thus, so that isolator can be used to shield elastic member, so that elastic filler can be directly assembled, without reserving matching gap for elastic filler, and elastic member will not lose compression amount, increase the restraint of elastic member to battery cell group, and can simplify the assembly process of battery pack, improve the practicality of battery pack.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a filling component, a battery pack, and an electrical device. Background Technology

[0002] To ensure proper assembly, a certain gap exists between the battery cell assembly and the casing. After the battery cell assembly is assembled, this gap needs to be filled. In related technologies, the gap-filling method involves attaching vacuum foam to the module side panels on both sides of the battery cell assembly. After the battery cell assembly is installed into the casing, the vacuum bag is cut open to allow the foam to expand and fill the gap. This method requires pre-reserved fitting clearance, the foam loses some compression, and the assembly process is relatively complex. Therefore, there is an urgent need for a solution that provides greater resilience while facilitating installation. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a filling component that eliminates the need for a pre-reserved fitting gap for the elastic filler, prevents the elastic filler from losing its compression, increases the restraining force of the elastic filler on the battery cell assembly, and simplifies the battery pack assembly process.

[0004] A filling assembly according to an embodiment of the present invention is used to fill the gap between the housing and the battery cell assembly. The filling assembly includes an elastic filler, which includes an elastic element and a spacer, with the spacer located on at least one side of the elastic element.

[0005] According to the filling assembly of the present invention, by providing an isolation member on at least one side of the elastic member, the isolation member can be used to protect the elastic member, so that the elastic filling member can be directly assembled without reserving a fitting gap for the elastic filling member. The elastic member will not lose its compression amount, the restraining force of the elastic member on the battery cell assembly is increased, and the assembly process of the battery pack can be simplified, thereby improving the practicality of the battery pack.

[0006] According to some embodiments of the present invention, the elastic filler further includes a back plate, the spacer is connected to the back plate, and the spacer and the back plate define a receiving space for the elastic filler.

[0007] According to some embodiments of the present invention, the back plate and the separator are integral components in the filling assembly.

[0008] According to some embodiments of the present invention, in the filling assembly, the spacer, the elastic member, and the back plate are arranged along a first direction, and in a second direction, one end of the spacer and one end of the back plate are connected to define a plug-in end, wherein the first direction and the second direction intersect.

[0009] According to some embodiments of the present invention, the insertion end of the filling assembly has a guide surface for guiding the insertion direction of the elastic filler.

[0010] According to some embodiments of the present invention, in the second direction, a portion of the spacer is bent toward the backplate to define the guide surface.

[0011] According to some embodiments of the present invention, the elastic element in the filling assembly includes foam or a spring.

[0012] According to some embodiments of the present invention, the insulating member in the filling assembly is constructed as a flexible member.

[0013] The battery pack according to some embodiments of the present invention further includes: a support plate, wherein the elastic filler is disposed on the side of the support plate opposite to the cell assembly, and the back plate is connected to the support plate.

[0014] According to some embodiments of the present invention, the support plate is provided with a mounting groove on one side along a first direction, and the end of the mounting groove along a second direction is open to form an assembly port, the second direction intersecting the first direction; the elastic filler is adapted to be inserted into the mounting groove from the assembly port.

[0015] According to some embodiments of the present invention, the back plate and the support plate are snap-fitted together in the filling assembly.

[0016] According to some embodiments of the present invention, the filling assembly has a mounting groove with slots on both sides of the third direction, a back plate with a buckle, the buckle engaging with the slots, and the third direction intersecting with the first direction and the second direction respectively.

[0017] According to some embodiments of the present invention, the back plate is provided with a plurality of buckles on both sides along the third direction, and the plurality of buckles located on the same side are spaced apart along the second direction.

[0018] According to some embodiments of the present invention, in the filling assembly, at least a portion of the snap fasteners are located on opposite sides of the elastic member along the second direction.

[0019] According to some embodiments of the present invention, the filling assembly includes a plurality of mounting grooves, which are spaced apart along a third direction, and the third direction intersects the first direction and the second direction respectively. Each mounting groove is provided with the elastic filler.

[0020] According to some embodiments of the present invention, the back plate and the support plate are integral components in the filling assembly.

[0021] This utility model also proposes a battery pack.

[0022] A battery pack according to an embodiment of the present invention includes: a housing with a receiving cavity inside; a battery cell assembly disposed within the receiving cavity; and a filling assembly, wherein the filling assembly is a filling assembly according to any of the above embodiments, the filling assembly being disposed on at least one side of the battery cell assembly and filling the gap between the housing and the battery cell assembly.

[0023] According to some embodiments of the present invention, the battery pack includes a plurality of battery cells stacked along a first direction, the battery cells extending along a third direction, and a plurality of elastic fillers. Along the first direction, the orthographic projections of the plurality of elastic fillers on the battery cells correspond to the two ends and the middle of the battery cells along the third direction, respectively.

[0024] This utility model also proposes an electrical device.

[0025] The electrical equipment according to the present invention includes: a battery pack according to any of the above embodiments.

[0026] The battery pack, the electrical equipment, and the filling component have the same advantages over the prior art, and will not be repeated here.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of a battery pack according to an embodiment of the present utility model;

[0030] Figure 2 This is an isometric view of the elastic filler according to an embodiment of the present invention;

[0031] Figure 3 This is a side view of the elastic filler according to an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the filling component according to an embodiment of the present utility model;

[0033] Figure 5 This is a schematic diagram of a support plate according to an embodiment of the present utility model.

[0034] Figure label:

[0035] Battery pack 100; First direction F1; Second direction F2; Third direction F3;

[0036] Box 1; Receiving cavity 11;

[0037] Cell group 2; Cell 21;

[0038] Elastic filler 3; back plate 31; buckle 311;

[0039] Elastic element 32; isolation element 33; guide surface 331; plug end 34;

[0040] Support plate 4; mounting groove 41; assembly port 42; slot 43; filling component 5. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Hereinafter, with reference to the accompanying drawings, the filling component 5 according to an embodiment of the present invention will be described.

[0045] like Figures 1-5 As shown, the filling component 5 according to the embodiment of the present utility model is used to fill the gap between the housing 1 and the battery cell group 2. The filling component 5 includes: an elastic filler 3, the elastic filler 3 includes an elastic member 32 and an isolation member 33, and the isolation member 33 is located on the side of the elastic member 32 away from the battery cell group 2.

[0046] First, such as Figures 1-3 As shown, the battery pack 100 includes a housing 1, a cell assembly 2, and a filling assembly 5. The housing 1 has a receiving cavity 11, and the cell assembly 2 is disposed in the receiving cavity 11. The cell assembly 2 has a plurality of cells 21, and the plurality of cells 21 are stacked along a first direction F1.

[0047] The filling component 5 is disposed on at least one side of the cell assembly 2 along the first direction F1. If the filling component 5 is disposed on one or both sides of the cell assembly 2 along the first direction F1, the filling component 5 is used to fill the gap between the housing 1 and the cell assembly 2.

[0048] It should be noted that when there are multiple battery cell groups 2 arranged sequentially along the first direction F1, the filling component 5 can also be used to fill the gap between two adjacent battery cell groups 2.

[0049] The filling component 5 is provided with an elastic filler 3, which includes an elastic element 32 and a separator 33. The separator 33 is located on at least one side of the elastic element 32 along the first direction F1 and slides in cooperation with the elastic element 32.

[0050] For example, the spacer 33 can be disposed on the side of the elastic member 32 facing the housing 1. During the process of the elastic filler 3 being installed into the housing 1, the spacer 33 can be used to slide against the side wall of the housing 1, so that the elastic filler 3 can be directly installed into the receiving cavity 11 of the housing 1. Since the spacer 33 separates the housing 1 from the elastic member 32, the elastic member 32 will not rub against the housing 1 and cause wear. And since the spacer 33 and the elastic member 32 are in sliding fit, the spacer 33 will not pull the elastic member 32 to deform excessively. Alternatively, the spacer 33 can be disposed on the side of the elastic member 32 facing the cell assembly. On one side of 2, during the process of the elastic filler 3 being installed into the housing 1, the isolation member 33 can be used to slide and engage with the side wall of the battery cell assembly 2 (or the support plate 4 described below) so that the elastic filler 3 can be directly installed into the receiving cavity 11 of the housing 1. Since the isolation member 33 separates the battery cell assembly 2 from the elastic member 32, the elastic member 32 will not rub against the battery cell assembly 2 and cause wear. Also, since the isolation member 33 and the elastic member 32 are in sliding engagement, the isolation member 33 will not pull the elastic member 32 to deform excessively. Alternatively, isolation members 33 can be provided on opposite sides of the elastic member 32, which will not be described in detail here.

[0051] It is understandable that by setting the elastic element 32, it can be directly installed into the receiving cavity 11 of the housing 1 under the protection of the insulating element 33. Compared with the solution of filling the gap with vacuum foam, there is no need to reserve a fitting gap for the elastic filling component 3. The elastic element 32 will not lose its compression amount, which can increase the restraining force of the elastic element 32 on the cell assembly 21 and reduce costs. Compared with the solution of inserting and filling the gap with PP sheet of standard thickness, the installation of the elastic filling component 3 can be completed in a single action, which helps to simplify the assembly process of the battery pack 100 and makes the elastic force of the elastic element 32 easier to control.

[0052] According to the embodiment of the present utility model, the battery pack 100 has an isolation member 33 on at least one side of the elastic member 32, so that the isolation member 33 can be used to protect the elastic member 32, so that the elastic filler 3 can be directly assembled without reserving a fitting gap for the elastic filler 3. The elastic member 32 will not lose its compression amount, increasing the restraining force of the elastic member 32 on the cell assembly 2, and simplifying the assembly process of the battery pack 100, thus improving the practicality of the battery pack 100.

[0053] In some embodiments of this utility model, such as Figures 2-4 As shown, the elastic filler 3 also includes a back plate 31, which can be made of materials such as plastic. A spacer 33 is connected to the back plate 31. The spacer 33 and the back plate 31 define a receiving space. The receiving space contains an elastic member 32, which can be connected to the back plate 31, such as by adhesive bonding.

[0054] The above arrangement enables the integrated arrangement of the isolation component 33 and the elastic component 32, ensuring the relative stability between the isolation component 33 and the elastic component 32, improving the protective effect of the isolation component 33 on the elastic component 32, and making the elastic filler 3 easy to assemble, thus improving the design rationality of the battery pack 100.

[0055] In some embodiments of this utility model, such as Figure 3 As shown, the back plate 31 and the spacer 33 can be configured as a single piece, such as by stretching the spacer 33 from a portion of the back plate 31. This increases the connection strength between the spacer 33 and the back plate 31, improves the structural stability of the elastic filler 3, and reduces the processing difficulty of the elastic filler 3, thus helping to reduce processing costs.

[0056] In some embodiments of this utility model, such as Figures 3-4As shown, the isolator 33, the elastic member 32, and the back plate 31 are arranged along the first direction F1. In the second direction F2, one end of the isolator 33 and one end of the back plate 31 are connected to define a plug-in end 34. The plug-in end 34 can be used to slide with related components (such as the housing 1, the battery pack 2, or the support plate 4 described below) to guide the elastic filler 3 into the housing 1. It should be noted that one end of the isolator 33 and one end of the back plate 31 can be directly connected to define the plug-in end 34, or they can be indirectly connected through a connecting plate to define the plug-in end 34. This utility model does not limit this.

[0057] The above settings make it easier to install the elastic filler 3, reducing the assembly difficulty of the battery pack 100, and better protect the elastic element 32 to avoid friction between the elastic element 32 and related components, thus improving the design rationality of the battery pack 100.

[0058] In some embodiments of this utility model, such as Figure 3 As shown, the plug end 34 has a guide surface 331, which is constructed as a curved surface or a bevel, so that the plug end 34 is formed as a chamfered structure. The guide surface 331 is used to guide the insertion direction of the elastic filler 3.

[0059] For example, a guide surface 331 can be provided on the back plate 31, and the guide surface 331 can slide with the support plate 4 to guide the insertion direction of the elastic filler 3; or, a guide surface 331 can be provided on the isolation member 33, and the guide surface 331 can slide with the side wall of the box 1 to guide the insertion direction of the elastic filler 3; or, guide surfaces 331 can be provided on the back plate 31 and the isolation member 33 respectively, the guide surface 331 on the back plate 31 can slide with the support plate 4, and the guide surface 331 on the isolation member 33 can slide with the side wall of the box 1. This utility model does not limit this.

[0060] The above settings make the installation process of the elastic filler 3 smoother and achieve a foolproof design, thereby improving the installation efficiency of the elastic filler 3.

[0061] In some embodiments of this utility model, such as Figure 3 As shown, in the second direction F2, a portion of the spacer 33 bends towards the back plate 31 to define a guide surface 331. The guide surface 331 can slide against the side wall of the housing 1 to guide the insertion direction of the elastic filler 3. This reduces the molding difficulty of the guide surface 331, lowers the processing difficulty of the elastic filler 3, and reduces the influence of the guide surface 331 on the elastic member 32, thereby improving the installation stability of the elastic member 32.

[0062] In some embodiments of this utility model, such as Figure 5As shown, a chamfered structure can be provided at the assembly port 42. This makes it easier to insert the elastic filler 3 into the mounting groove 41, improving the design rationality of the battery pack 100.

[0063] In some embodiments of this invention, the elastic element 32 may include foam or a spring. Of course, the elastic element 32 can also be other structures with elastic force, and this is not limited here. This allows it to meet different working conditions.

[0064] In some embodiments of this utility model, the material of the elastic element 32 can be foam, the thickness of the elastic element 32 along the first direction F1 can be set as H0, the distance between the support plate 4 and the side wall of the receiving cavity 11 along the first direction F1 can be set as L1, the depth of the mounting groove 41 can be set as H1, the thickness of the back plate 31 along the first direction F1 can be set as H2, and the preset compression amount of the elastic element 32 can be set as S, satisfying: H0=(L1+H1-H2) / (1-S), 1mm≤H2≤2mm, 20%≤S≤40%.

[0065] In other words, the thickness H2 of the backplate 31 along the first direction F1 can be set to be greater than or equal to 1 mm and less than or equal to 2 mm. For example, the thickness H2 of the backplate 31 along the first direction F1 can be set to 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, etc. This ensures that the backplate 31 has sufficient structural strength to ensure that the backplate 31 can be smoothly inserted into the mounting groove 41, and avoids the backplate 31 being too thick, which would affect the layout of the battery pack 100. At the same time, the preset compression amount S of the elastic member 32 can be set to be greater than or equal to 20% and less than or equal to 40%. For example, the preset compression amount S of the elastic member 32 can be set to 20%, 25%, 30%, 34%, 40%, etc. This allows the elastic member 32 to apply a sufficiently large restraining force to the cell assembly 2, and avoids the elastic member 32 being too compressed, making it difficult to install into the mounting groove 41. Therefore, the design rationality of the battery pack 100 can be improved.

[0066] In some embodiments of this utility model, the spacer 33 can be constructed as a flexible component, such as a flexible membrane or a flexible plate. This allows the spacer 33 to remain in close contact with the side wall of the housing 1, making it easier to assemble the elastic filler 3 and preventing irreversible damage caused by excessive local deformation of the elastic component 32, thus improving the design rationality of the filling assembly 5.

[0067] In some embodiments of the present invention, the filling component 5 of the present invention further includes: a support plate 4, an elastic filler 3 disposed on the side of the support plate 4 away from the battery cell assembly 2, and a back plate 31 connected to the support plate 4.

[0068] For example, refer to Figure 1As shown, the filling assembly 5 also includes: a support plate 4, which is connected to the cell assembly 2. The support plate 4 can be glued to the cell assembly 2. The support plate 4 is used to cover the side wall of the cell assembly 2 along the first direction F1. An elastic filler 3 is provided on the side of the support plate 4 away from the cell assembly 2. A back plate 31 is connected to the support plate 4. The elastic filler 3 can apply a restraining force to the cell assembly 2 through the support plate 4.

[0069] With the above settings, the restraining force of the elastic filler 3 can be evenly applied to the cell assembly 2, which can prevent the cell assembly 2 from being damaged due to excessive local stress and improve the reliability of the battery pack 100.

[0070] In some embodiments of this utility model, such as Figure 1 , Figure 4 and Figure 5 As shown, the support plate 4 has a mounting groove 41 on the side opposite to the battery cell assembly 2 along the first direction F1. The mounting groove 41 extends along the second direction F2, and its end along the second direction F2 is open to form an assembly opening 42. The second direction F2 intersects the first direction F1. The elastic filler 3 is adapted to be inserted into the mounting groove 41 from the assembly opening 42. For example, the first direction F1 can be set as... Figure 1 The forward and backward directions are shown, and the second direction F2 is set as... Figure 1 The up and down directions are shown.

[0071] In the specific installation process, the battery cell assembly 2 is first installed into the receiving cavity 11 of the housing 1. The support plate 4 is arranged at intervals with the side wall of the housing 1 along the first direction F1. Then, the elastic filler 3 is installed into the installation slide 41 from the assembly port 42 so that the elastic filler 3 can abut against the side wall of the housing 1, thereby allowing the elastic filler 3 to apply a restraining force to the battery cell assembly 2.

[0072] The above configuration allows for full utilization of the space within the cavity 11, increasing the energy density of the battery pack 100. It also improves the installation stability between the elastic filler 3 and the support plate 4, thereby enhancing the overall stability of the battery pack 100.

[0073] In some embodiments of this utility model, the back plate 31 and the support plate 4 can be configured to engage with a snap-fit ​​mechanism. This allows the elastic filler 3 to provide tactile feedback when installed, improving the installation accuracy of the elastic filler 3. Furthermore, it makes the elastic filler 3 easier to install and remove, facilitating subsequent maintenance and enhancing its practicality.

[0074] Of course, this utility model is not limited to this; the back plate 31 can also be glued to the support plate 4 or connected by fasteners. This is beneficial for meeting different working conditions.

[0075] In some embodiments of this utility model, such as Figure 2 and Figure 5 As shown, the mounting slide 41 can be provided with slots 43 on both sides along the third direction F3, and the back plate 31 can be provided with buckles 311 on both sides along the third direction F3. The buckles 311 are arranged opposite to the slots 43, and the third direction F3 intersects with the first direction F1 and the second direction F2 respectively. When the back plate 31 moves along the second direction F2 to be inserted into the mounting slide 41 from the assembly port 42, the buckles 311 can engage with the slots 43 to fix the elastic filler 3 in the mounting slide 41 from both sides of the third direction F3.

[0076] For example, the first direction F1 can be set to Figure 1 The forward and backward directions shown can be used to set the second direction F2 as... Figure 1 The vertical direction is shown, and the third direction F3 is set as... Figure 1 The left and right directions are shown.

[0077] The above configuration simplifies the structure of the elastic filler 3 and the support plate 4, reduces the processing difficulty and cost of the battery pack 100, and improves the practicality of the battery pack 100.

[0078] In some embodiments of this utility model, such as Figure 2 and Figure 5 As shown, multiple buckles 311 can be provided on both sides of the back plate 31 along the third direction F3. The multiple buckles 311 located on the same side are spaced apart along the second direction F2. Multiple slots 43 are provided on both sides of the mounting slide 41 along the third direction F3. The multiple buckles 311 and the multiple slots 43 are matched one-to-one. This can improve the connection stability between the back plate 31 and the support plate 4, and improve the installation stability of the elastic filler 3.

[0079] In some embodiments of this utility model, such as Figure 2 As shown, at least some of the latches 311 are located on opposite sides of the elastic member 32 along the second direction F2. This improves the support effect of the back plate 31 on the elastic member 32, helps prevent the elastic member 32 from deflecting, makes the restraining force applied by the elastic member 32 more stable, and improves the reliability of the battery pack 100.

[0080] In some embodiments of this utility model, such as Figure 4 As shown, multiple mounting grooves 41 can be provided, and the multiple mounting grooves 41 are arranged at intervals along a third direction F3. The third direction F3 intersects with the first direction F1 and the second direction F2 respectively. Each mounting groove 41 is provided with an elastic filler 3. For example, the first direction F1 can be set as Figure 1 The forward and backward directions shown can be used to set the second direction F2 as... Figure 1 The vertical direction is shown, and the third direction F3 is set as... Figure 1 The left and right directions are shown.

[0081] With the above settings, multiple elastic fillers 3 can apply restraining force to the cell assembly 2 from different positions, which can increase the restraining force on the cell assembly 2 and make the force on the cell assembly 2 more uniform, thereby improving the reliability of the battery pack 100.

[0082] In some embodiments of this utility model, the back plate 31 and the support plate 4 can be configured as a single unit to clamp the elastic member 32 between the separator 33 and the support plate 4. This allows the elastic filler 3 to be installed into the receiving cavity 11 along with the cell assembly 2 during installation. This reduces the number of assembly steps in the battery pack 100, lowers the assembly difficulty, and improves the installation stability of the elastic member 32, making the restraining force exerted by the elastic member 32 on the cell assembly 2 more stable and improving the overall performance of the battery pack 100.

[0083] This utility model also proposes a battery pack 100.

[0084] The battery pack 100 according to an embodiment of the present utility model includes: a housing 1, a cell assembly 2 and a filling component 5. The housing 1 is provided with a receiving cavity 11; the cell assembly 2 is disposed in the receiving cavity 11; the filling component 5 is the filling component 5 according to any of the above embodiments, and the filling component 5 is disposed on at least one side of the cell assembly 2 and fills the gap between the housing 1 and the cell assembly 2.

[0085] According to the embodiment of the present utility model, the battery pack 100 has good stability and the assembly process of the battery pack 100 is simple, which helps to reduce costs and improve the product competitiveness of the battery pack 100.

[0086] In some embodiments of this utility model, multiple battery cell groups 2 can be provided, and multiple battery cell groups 2 are arranged sequentially along the first direction F1. The elastic filler 3 can be inserted and cooperated with adjacent battery cell groups 2. The filling elastic filler 3 is used to separate two adjacent battery cell groups 2 to reserve buffer space.

[0087] Specifically, a filling component 5 may be provided in one of the two adjacent cell groups 2, and the filling component 5 is used to apply an elastic force to the other of the two adjacent cell groups 2; or, the two adjacent cell groups 2 may be provided with filling components 5 respectively, and the two filling components 5 apply an elastic force to each other.

[0088] The above settings can prevent excessive compression between adjacent cell groups 2, thus improving the safety of the battery pack 100.

[0089] In some embodiments of this utility model, such as Figure 1As shown, the battery cell assembly 2 includes a plurality of battery cells 21 stacked along a first direction F1. The battery cells 21 extend along a third direction F3. There are multiple elastic fillers 3. Along the first direction F1, the orthographic projections of the multiple elastic fillers 3 on the battery cells 21 correspond to the two ends and the middle of the battery cells 21 along the third direction, respectively.

[0090] With the above configuration, multiple elastic fillers 3 can apply restraining force to the cell assembly 2 from different positions, which can increase the restraining force on the cell assembly 2 and make the force on the cell assembly 2 more uniform, thereby improving the reliability of the battery pack 100.

[0091] This utility model also proposes an electrical device.

[0092] The electrical device according to an embodiment of the present invention includes a battery pack 100 according to any of the above embodiments. It should be noted that the electrical device can be any of the following: a pure electric vehicle, a hybrid vehicle, a drone, etc.

[0093] According to the embodiments of the present invention, the battery pack 100 of the electrical equipment has good stability and the assembly process of the battery pack 100 is simple, which helps to reduce costs, improves the product competitiveness of the battery pack 100, and enhances the practicality of the electrical equipment.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filling assembly, characterized by The filling assembly (5) is used to fill the gap between the housing (1) and the battery cell assembly (2). The filling assembly (5) includes an elastic filler (3), which includes an elastic element (32) and an isolation element (33), wherein the isolation element (33) is located on at least one side of the elastic element (32).

2. The filling assembly of claim 1, wherein, The elastic filler (3) also includes a back plate (31), and the spacer (33) is connected to the back plate (31). The spacer (33) and the back plate (31) define a receiving space for the elastic member (32).

3. The filling assembly of claim 2, wherein, The back plate (31) and the isolation member (33) are an integral piece.

4. The filling assembly of claim 3, wherein, The isolator (33), the elastic member (32) and the back plate (31) are arranged along a first direction, and in a second direction, one end of the isolator (33) and one end of the back plate (31) are connected to define a plug-in end (34), and the first direction and the second direction intersect.

5. The filling component according to claim 4, characterized in that, The insertion end (34) has a guide surface (331) for guiding the insertion direction of the elastic filler (3).

6. The filling component according to claim 5, characterized in that, In the second direction, a portion of the spacer (33) bends toward the backplate (31) to define the guide surface (331).

7. The filling component according to any one of claims 1-6, characterized in that, The elastic element (32) includes foam or spring.

8. The filling assembly according to any one of claims 1-6, wherein, The isolation element (33) is constructed as a flexible element.

9. The filling component according to any one of claims 2-6, characterized in that, Also includes: The support plate (4) has an elastic filler (3) disposed on the side of the support plate (4) away from the battery cell assembly (2), and the back plate (31) is connected to the support plate (4).

10. The filling component according to claim 9, characterized in that, The support plate (4) has a mounting groove (41) on one side along the first direction, and the mounting groove (41) is open at the end along the second direction to form an assembly opening (42), the second direction intersecting the first direction; The elastic filler (3) is adapted to be inserted into the mounting groove (41) from the assembly port (42).

11. The filling assembly of claim 10, wherein, The back plate (31) and the support plate (4) are snapped together.

12. The filling component according to claim 11, characterized in that, The mounting slide (41) has slots (43) on both sides of the third direction, and the back plate (31) has buckles (311). The buckles (311) engage with the slots (43), and the third direction intersects with the first direction and the second direction respectively.

13. The filling component according to claim 12, characterized in that, The back plate (31) is provided with a plurality of buckles (311) on both sides along the third direction, and the plurality of buckles (311) on the same side are spaced apart along the second direction.

14. The filling component according to claim 13, characterized in that, At least a portion of the buckle (311) is located on opposite sides of the elastic member (32) along the second direction.

15. The filling component according to claim 10, characterized in that, There are multiple mounting grooves (41), which are arranged at intervals along a third direction. The third direction intersects the first direction and the second direction respectively. Each mounting groove (41) is provided with the elastic filler (3).

16. The filling component according to claim 9, characterized in that, The back plate (31) and the support plate (4) are a single piece.

17. A battery pack, characterized in that, include: Box (1), wherein the box (1) is provided with a receiving cavity (11); Battery cell assembly (2), wherein the battery cell assembly (2) is disposed within the receiving cavity (11); A filling component (5), wherein the filling component (5) is a filling component (5) according to any one of claims 1-16, the filling component (5) is disposed on at least one side of the cell assembly (2) and fills the gap between the housing (1) and the cell assembly (2).

18. The battery pack according to claim 17, characterized in that, The battery cell assembly (2) includes a plurality of battery cells (21) stacked along a first direction, the battery cells (21) extending along a third direction, and a plurality of elastic fillers (3). Along the first direction, the orthographic projections of the plurality of elastic fillers (3) on the battery cells (21) correspond to the two ends and the middle of the battery cells (21) along the third direction, respectively.

19. An electrical appliance, characterized in that, include: The battery pack (100) according to claim 17 or 18.

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