Battery device

Abstract

This invention relates to the field of battery technology, and more particularly to a battery device. The battery device includes a battery pack comprising a plurality of batteries arranged along a first direction. The terminal assemblies of the batteries are located on surfaces other than the top surface of the batteries, and an insulating film is disposed on the top of the battery pack. Through this design, the present invention utilizes the insulating film to prevent contact between the battery pack and the cover or other structures located above the battery pack when the batteries expand and deform, or when the cover deforms due to vibration of the battery device, thus reducing safety hazards. Furthermore, since the insulating film is easier to form than the insulating plate, especially as the size increases (the forming difficulty of the insulating plate increases), and the insulating film is thinner, it can save top space and weight of the battery device. In addition, the insulating film is a flexible material and is easier to compress, further reducing the space occupied.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a battery device. Background Technology

[0002] In existing battery devices, when the battery expands or deforms, or when the battery device vibrates and the lid deforms, the battery may come into contact with the lid, posing a safety hazard to the battery device. Summary of the Invention

[0003] A primary objective of this invention is to overcome at least one of the deficiencies of the prior art described above, and to provide a battery device that avoids direct contact between the battery pack and the structure above it and reduces space occupation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] According to one aspect of the present invention, a battery device is provided, comprising a battery pack including a plurality of batteries arranged along a first direction, wherein terminal assemblies of the batteries are located on surfaces of the batteries other than the top surface, and an insulating film is disposed on the top of the battery pack.

[0006] As can be seen from the above technical solution, the advantages and positive effects of the battery device proposed in this invention are as follows:

[0007] The battery device proposed in this invention features an insulating film on top of the battery pack. Through this design, the invention utilizes the insulating film to prevent contact between the battery pack and the cover or other structures located above the battery pack, which could occur when the battery expands or deforms, or when the cover deforms due to vibration, thus reducing safety hazards. Furthermore, since the insulating film is easier to mold than an insulating plate (especially as the size increases, molding the insulating plate becomes more difficult), and the insulating film is thinner, it saves top space and weight on the battery device. Additionally, the insulating film is a flexible material and is easier to compress, further reducing unnecessary space occupation. Attached Figure Description

[0008] Various objects, features, and advantages of the invention will become more apparent from the following detailed description of preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are merely illustrative of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0009] Figure 1 This is a three-dimensional structural schematic diagram of a battery device according to an exemplary embodiment;

[0010] Figure 2 yes Figure 1 An exploded perspective view of the battery device is shown.

[0011] Figure 3 yes Figure 1 A three-dimensional structural diagram of a portion of the battery device is shown;

[0012] Figure 4 yes Figure 2 A schematic diagram of the three-dimensional structure of the battery is shown;

[0013] Figure 5 This is an exploded perspective view of a portion of the structure of a battery device according to another exemplary embodiment;

[0014] Figure 6 yes Figure 5 A partial cross-sectional view of a portion of the battery device structure is shown.

[0015] Figure 7 This is an exploded perspective view of a portion of the structure of a battery device according to another exemplary embodiment;

[0016] Figure 8 yes Figure 7 A partial cross-sectional view of a portion of the battery device structure is shown.

[0017] Figure 9 This is a partial cross-sectional view of a portion of the structure of a battery device according to another exemplary embodiment.

[0018] The annotations in the attached figures are explained as follows:

[0019] 100. Box;

[0020] 200. Battery pack;

[0021] 210. Battery;

[0022] 211. Flange structure;

[0023] 220. End plate;

[0024] 300. Box lid;

[0025] 310. Convex ribs;

[0026] 400. Insulating film;

[0027] 410. First buffer layer;

[0028] 420. Second buffer layer;

[0029] 500. Insulating support;

[0030] D. Thickness;

[0031] H. Height;

[0032] L. Length;

[0033] X. First direction;

[0034] Y. Second direction. Detailed Implementation

[0035] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the description and drawings therein are for illustrative purposes only and not intended to limit the present invention.

[0036] In the following description of different exemplary embodiments of the invention, reference is made to the accompanying drawings, which form part of the invention, and in which different exemplary structures, systems, and steps that can implement various aspects of the invention are shown by way of example. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of the invention. Furthermore, although the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of the invention, these terms are used herein only for convenience, such as the orientation according to the examples shown in the drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the invention.

[0037] See Figure 1 The illustration shows a representative three-dimensional structural diagram of the battery device proposed in this invention. In this exemplary embodiment, the battery device proposed in this invention is described using a vehicle battery as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of this invention to other types of battery devices, and these changes are still within the scope of the principles of the battery device proposed in this invention.

[0038] like Figure 1 As shown, in this embodiment, the battery device proposed by the present invention includes a housing 100 and a battery pack 200, the battery pack 200 being housed within the housing 100, and the battery pack 200 including a plurality of batteries 210 arranged along a first direction X. (See also...) Figures 2 to 4 , Figure 2 The diagram shows a representative three-dimensional exploded view of a battery device that embodies the principles of the present invention. Figure 3 The diagram shows a three-dimensional structural schematic of a portion of the battery device, specifically the three-dimensional structure of the assembly of the battery pack 200 and the insulating film 400. Figure 4 China representatively shows Figure 2The diagram shows a three-dimensional structural schematic of the battery 210. The structure, connection method, and functional relationship of the main components of the battery device proposed in this invention will be described in detail below with reference to the above-mentioned figures.

[0039] like Figures 1 to 3 As shown, in one embodiment of the present invention, the terminal assembly of the battery 100 is located on other surfaces of the battery 100 besides the top surface, for example... Figure 9 The terminal assembly of the battery 100 shown is located on the side of the battery 100 perpendicular to the first direction, i.e., the "large surface" of the battery 100. Since the terminal assembly is not located on the top surface of the battery 100, the acquisition structure (e.g., acquisition circuit board) connected to the terminal assembly is not located on the top of the battery 100; that is, the top of the battery 100 does not have a film for covering the acquisition structure. Based on this, an insulating film 400 is provided on the top of the battery pack 200. Through the above design, the present invention can utilize the insulating film 400 to prevent contact between the battery pack 200 and the cover 300 or other structures located above the battery pack 200 when the battery 210 expands and deforms, or when the battery device vibrates and causes the cover 300 to deform, thus reducing safety hazards of the battery device. Furthermore, insulating films are easier to mold than insulating sheets, especially as the size increases, making the molding of insulating sheets more difficult. In addition, the thinner insulating film saves space and weight on the top of the battery pack. As a flexible material, the insulating film is easier to compress, further reducing space requirements. It should be noted that the battery expands perpendicular to its surface. If the battery has terminal posts on top, the battery tabs need to connect to these posts, inevitably leaving a gap between the top cover and the battery. Therefore, even if the battery expands, it won't directly contact the top cover, preventing deformation and eliminating the need for an additional insulating film on top.

[0040] In one embodiment of the present invention, the insulating film 400 may be a single-layer film structure. In some embodiments, the insulating film 400 may also be a multilayer film structure.

[0041] In one embodiment of the present invention, the insulating film 400 and the battery pack 200 can be adhesively bonded. Through the above design, compared to an insulating plate, the insulating film has a certain deformation capability. Based on the adhesive bonding design between the insulating film and the battery pack 200, when the battery 210 expands and compresses the insulating film 400, the insulating film 400 can deform and shrink. However, the insulating plate has poor deformation capability and is prone to failure at the connection between the insulating plate and the battery pack 200 when the battery 210 expands, as the insulating plate is subjected to force.

[0042] like Figure 2 and Figure 3As shown, based on the design of adhesive bonding between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, the battery pack 200 has end structures at both ends along the first direction X. These end structures can be batteries 210 (i.e., batteries 210 located at the ends of the battery pack 200 along the first direction X) or end plates 220 (located at the ends of multiple batteries 210 along the first direction X). Based on this, the insulating film 400 can be adhesively bonded to at least two end structures of the battery pack 200. Through this design, the insulating film 400 can span at least a portion of two batteries 210. Therefore, when the batteries 210 expand (e.g., the "large surface" of the battery 210 expands, which is the side of the battery 210 perpendicular to the first direction X), causing gaps to form between the batteries 210, the insulating film 400 will be stretched. Due to the deformation of the insulating film, the expansion force of the batteries 210 can be absorbed.

[0043] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the battery device further includes a cover 300, which is located above the insulating film 400, i.e., the insulating film 400 is located between the cover 300 and the battery pack 200. The insulating film 400 and the cover 300 are then adhesively bonded together. Through this design, the present invention fixes the insulating film 400 to the cover 300 by adhesive bonding, allowing the insulating film 400 to be fixed together with the cover 300 upon arrival. During assembly of the cover 300, the insulating film 400 can be placed over the battery pack 200, thereby facilitating the assembly of the battery device and eliminating the need for a separate process of fixing the insulating film 400 to the battery pack 200.

[0044] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the insulating film 400 can cover all the batteries 210 of the battery pack 200. With the above design, when the batteries 210 expand, for example, when a large area of ​​the battery 210 expands, causing a gap to form between adjacent batteries 210 and pulling the insulating film 400, the present invention can absorb the expansion force of the batteries 210 by utilizing the deformation of the insulating film 400. In some embodiments, the insulating film 400 can at least cover at least a portion of two adjacent batteries 210 of the battery pack 200, thereby at least absorbing the expansion force of these two adjacent batteries 210 by utilizing the deformation of the insulating film 400, and is not limited to this embodiment.

[0045] See Figure 5 and Figure 6 , Figure 5The diagram shows a representative three-dimensional exploded view of a portion of the structure of a battery device that embodies the principles of the present invention in another exemplary embodiment, specifically showing the three-dimensional structure of the insulating film 400 and the battery pack 200 in the exploded state. Figure 6 China representatively shows Figure 5 A partial cross-sectional view of a portion of the battery device structure is shown.

[0046] like Figure 5 and Figure 6 As shown, in one embodiment of the present invention, a first buffer layer 410 may be provided between the insulating film 400 and the battery pack 200. That is, the insulating film 400 is supported and fixed on the top surface of the battery pack via the first buffer layer 410, and the insulating film 400 and the battery pack 200 are not directly connected. In other words, the portion of the insulating film 400 without the first buffer layer 410 is arranged with a gap between it and the battery pack 200. Through the above design, the present invention can reserve an expansion gap for the battery 210, and can utilize the first buffer layer 410 to provide a supporting function, avoiding noise generated during vibration and insulation failure caused by contact between the battery pack 200 and the structure above it (such as the cover 300) during collision. Furthermore, when the top of the battery 210 has a flange structure 211, such as a flange edge, if the insulating film 400 directly covers the top of the battery 210, the insulating film 400 may be punctured by the flange structure 211. Therefore, the first buffer layer 410 can also protect the insulating film 400 from being punctured by the flange structure 211.

[0047] like Figure 5 As shown, based on the design of a first buffer layer 410 disposed between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, the first buffer layer 410 can be a strip structure extending along a second direction Y, and the second direction Y is perpendicular to the first direction.

[0048] like Figure 5 As shown, based on the design of a first buffer layer 410 disposed between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, the top of the battery 210 has a flange structure 211 protruding toward the insulating film 400, such as, but not limited to, a flange edge. Based on this, a first buffer layer 410 can be disposed between the flange structures 211 of at least two adjacent batteries 210. Through the above design, the present invention can utilize the flange structures 211 of two adjacent batteries 210 to achieve a limiting function for the first buffer layer 410.

[0049] Based on the design of a first buffer layer 410 disposed between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, the first buffer layer 410 and the insulating film 400 can be adhesively bonded. Through this design, since the first buffer layer 410 has a certain deformation capability, and based on the adhesive bonding design between the first buffer layer 410 and the battery pack 200, when the battery 210 expands and compresses the first buffer layer 410, the first buffer layer 410 can deform and shrink, preventing the battery 210 from exerting force on the first buffer layer 410 during expansion, thus avoiding failure at the connection between the first buffer layer 410 and the insulating film 400.

[0050] Based on the design of a first buffer layer 410 provided between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, the material of the first buffer layer 410 is buffer foam.

[0051] like Figure 5 As shown, based on the design of a first buffer layer 410 between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, multiple first buffer layers 410 can be provided between the insulating film 400 and the battery pack 200, and these first buffer layers 410 are arranged at intervals along the first direction X. Through the above design, the present invention can further achieve support and protection for multiple positions of the insulating film 400 while reserving the expansion gap of the battery 210.

[0052] Based on the design of multiple first buffer layers 410 disposed between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, the battery device further includes a cover 300, which is located above the insulating film 400. The cover 300 may have multiple ribs 310 protruding towards the insulating film 400, and each rib 310 corresponds one-to-one with a first buffer layer 410. Through this design, the present invention can further increase the structural strength of the cover 300 by utilizing the ribs 310, and simultaneously utilize the ribs 310 corresponding to the first buffer layers 410, thereby allowing the first buffer layers 410 to indirectly support the ribs 310 via the insulating film 400, achieving the supporting function of the cover 300 and thus ensuring a close fit between the cover 300 and the battery pack 200, preventing the cover 300 from slapping against the battery pack 200 during vibration, and also avoiding noise.

[0053] See Figure 9 , Figure 9 The image shows a partial cross-sectional view of a battery device that embodies the principles of the present invention in another exemplary embodiment.

[0054] like Figure 9As shown, taking the example of multiple first buffer layers 410 disposed between the insulating film 400 and the battery pack 200, in one embodiment of the present invention, multiple second buffer layers 420 may be disposed between the insulating film 400 and the cover 300, and these second buffer layers 420 are arranged at intervals along the first direction X. Based on this, the multiple second buffer layers 420 and the multiple first buffer layers 410 can correspond one-to-one. Through the above structural design, the present invention can utilize the first buffer layer 410 to provide support between the insulating film 400 and the battery pack 200, and can utilize the second buffer layer 420 to provide support between the insulating film 400 and the cover 300. Simultaneously, by utilizing the corresponding positional design of the first buffer layer 410 and the second buffer layer 420, the supporting effect of the first buffer layer 410 and the second buffer layer 420 on the insulating film 400 is located at the same position on the insulating film 400, further improving the supporting effect, while avoiding deformation caused by unilateral (top or bottom) stress on the insulating film 400 due to supporting it.

[0055] See Figure 7 and Figure 8 , Figure 7 The diagram shows a representative three-dimensional exploded view of a portion of the structure of a battery device that embodies the principles of the present invention in another exemplary embodiment, specifically showing the three-dimensional structure of the insulating film 400 and the battery pack 200 in the exploded state. Figure 8 China representatively shows Figure 7 A partial cross-sectional view of a portion of the battery device structure is shown.

[0056] like Figure 7 and Figure 8 As shown, in one embodiment of the present invention, the battery device further includes a cover 300, which is located above the insulating film 400, i.e., the insulating film 400 is located between the cover 300 and the battery pack 200. Based on this, a second buffer layer 420 can be provided between the insulating film 400 and the cover 300. Through the above design, the present invention can utilize the second buffer layer 420 to provide support between the insulating film 400 and the cover 300, and simultaneously achieves an assembly process where the insulating film 400 is first fixed to the battery pack 200 via the second buffer layer 420 before assembling the second buffer layer 420, resulting in higher assembly efficiency.

[0057] like Figure 7 As shown, based on the design of a second buffer layer 420 provided between the insulating film 400 and the box cover 300, in one embodiment of the present invention, the second buffer layer 420 can be a strip structure extending along a second direction Y, and the second direction Y is perpendicular to the first direction.

[0058] like Figure 7As shown, based on the design of a second buffer layer 420 disposed between the insulating film 400 and the cover 300, in one embodiment of the present invention, the top of the battery 210 has a flange structure 211 protruding toward the insulating film 400, such as, but not limited to, a flange edge. Based on this, the area between the flange structures 211 of at least two adjacent batteries 210 can correspond to the position of the second buffer layer 420. In other words, with respect to the orthographic projection on the bottom plate (not shown) of the housing 100, the second buffer layer 420 is located between the flange structures 211 of two adjacent batteries 210, or when there are multiple second buffer layers 420, at least one second buffer layer 420 is located between the flange structures 211 of two adjacent batteries 210.

[0059] Based on the design of a second buffer layer 420 disposed between the insulating film 400 and the cover 300, in one embodiment of the present invention, the second buffer layer 420 and the insulating film 400 can be adhesively bonded. Through this design, since the second buffer layer 420 has a certain deformation capability, and based on the adhesive bonding design between the second buffer layer 420 and the cover 300, when the battery 210 expands and compresses the second buffer layer 420, the second buffer layer 420 can deform and shrink, preventing force from being applied to the second buffer layer 420 when the battery 210 expands, thus avoiding failure at the connection between the second buffer layer 420 and the insulating film 400.

[0060] Based on the design of a second buffer layer 420 provided between the insulating film 400 and the box cover 300, in one embodiment of the present invention, the material of the second buffer layer 420 is buffer foam.

[0061] like Figure 7 As shown, based on the design of a second buffer layer 420 disposed between the insulating film 400 and the box cover 300, in one embodiment of the present invention, multiple second buffer layers 420 may be disposed between the insulating film 400 and the box cover 300, and these second buffer layers 420 are arranged at intervals along the first direction X. Through the above design, the present invention can further achieve support at multiple positions between the insulating film 400 and the box cover 300.

[0062] Based on the design of multiple second buffer layers between the insulating film 400 and the lid 300, in one embodiment of the present invention, the lid 300 may have multiple protruding ribs 310 extending towards the insulating film 400. Each of the multiple protruding ribs 310 corresponds one-to-one with a multiple second buffer layer 420, and the protruding ribs 310 abut against the second buffer layer 420. Through this design, the present invention can further increase the structural strength of the lid 300 by utilizing the protruding ribs 310, and simultaneously, by utilizing the protruding ribs 310 abutting against the second buffer layer 420, the second buffer layer 420 provides support for the protruding ribs 310, thereby achieving the supporting function of the lid 300.

[0063] like Figure 9 As shown, taking the example of multiple second buffer layers 420 disposed between the insulating film 400 and the cover 300, in one embodiment of the present invention, multiple first buffer layers 410 may be disposed between the insulating film 400 and the battery pack 200, and these first buffer layers 410 are arranged at intervals along the first direction X. Based on this, the multiple first buffer layers 410 and the multiple second buffer layers 420 can correspond one-to-one. Through the above structural design, the present invention can utilize the second buffer layers 420 to provide support between the insulating film 400 and the cover 300, and can utilize the first buffer layers 410 to provide support between the insulating film 400 and the battery pack 200. Simultaneously, by utilizing the corresponding positional design of the first buffer layers 410 and the second buffer layers 420, the supporting effect of the first buffer layers 410 and the second buffer layers 420 on the insulating film 400 is located at the same position on the insulating film 400, further improving the supporting effect, while avoiding deformation caused by unilateral (top or bottom) stress on the insulating film 400 due to supporting it.

[0064] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the insulating film 400 can be a one-piece structure. Through the above design, the present invention simplifies the structure, reduces the number of parts, and improves assembly efficiency.

[0065] In one embodiment of the present invention, an insulating support 500 may be provided on the surface of the battery 210, for example... Figure 2 and Figure 3 The battery 210 is actually marked at the position of the insulating bracket 500. The portion of the insulating bracket 500 located at the top of the battery 210 may have an opening. Through this design, the present invention utilizes the top opening of the insulating bracket 500 to provide a foolproof function during assembly.

[0066] like Figure 4 As shown, in one embodiment of the present invention, the length L of the battery 210 along the second direction Y can be 400mm to 2500mm. Based on this, the thickness D of the battery 210 along the first direction X can account for 1 / 50 to 1 / 2 of the length L of the battery 210, and the ratio of the height H of the battery 210 along the height direction to the thickness D of the battery 210 along the first direction X can be 0.05 to 2.

[0067] Furthermore, in one embodiment of the present invention, the thickness D of the battery 210 can be specifically 50mm to 200mm, such as 50mm, 100mm, 150mm, 200mm, etc.

[0068] Furthermore, in one embodiment of the present invention, the height H of the battery 210 can be specifically 10mm to 100mm, for example 10mm, 30mm, 50mm, 100mm, etc.

[0069] Furthermore, in one embodiment of the present invention, the thickness D of the battery 210 can account for 1 / 25 to 1 / 4 of the length L of the battery 210, for example, 1 / 25, 1 / 10, 1 / 5, 1 / 4, etc.

[0070] Furthermore, in one embodiment of the present invention, the ratio of the height H of the battery 210 to the thickness D of the battery 210 can be further 0.1 to 0.5, for example 0.1, 0.2, 0.3, 0.5, etc.

[0071] In the above embodiment, the battery 210 has a large ratio of length L to thickness D while ensuring sufficient energy density. Furthermore, the battery 210 has a large ratio of thickness D to height H.

[0072] In one embodiment of the present invention, the proportion of the thickness D of the battery 210 in the length L of the battery 210 can be further 1 / 7 to 1 / 4, for example 1 / 7, 1 / 6, 1 / 5, 1 / 4, etc., that is, the ratio of the length L of the battery 210 to the thickness D is relatively large, thereby increasing the energy density of the battery 210 and facilitating the subsequent formation of the battery pack 200.

[0073] In one embodiment of the present invention, the ratio of the height H of the battery 210 to the thickness D of the battery 210 is 1 / 7 to 1 / 3, that is, the ratio of the thickness D of the battery 210 to the height H is relatively large, which facilitates the formation of the battery pack 200 while ensuring sufficient energy density.

[0074] Furthermore, in one embodiment of the present invention, the length L of the battery 210 can be further 500mm to 1500mm, the thickness D of the battery 210 can be further 80mm to 150mm, and the height of the battery 210 can be further 15mm to 25mm.

[0075] It should be noted that, in Figure 4 The dimensions of the battery 210 shown are based on the overall dimensions of the battery 210 with the insulating support 500 on its surface. That is, the dimensions shown in the related drawings include the dimensions of the insulating support 500. It should be understood that in the descriptions of the above embodiments in this specification, the values ​​of each dimension or the relationships between different dimensions include the dimensions of the insulating support 500, or the values ​​of each dimension or the relationships between different dimensions ignore the dimensions of the insulating support 500. That is, the smaller dimensions of the insulating support 500 relative to the size of the battery 210 are considered not to affect the relevant values ​​or relationships.

[0076] In summary, the battery device proposed in this invention has an insulating film 400 on top of the battery pack 200. Through this design, the present invention utilizes the insulating film 400 to prevent contact between the battery pack 200 and the cover 300 or other structures located above the battery pack 200 when the battery 210 expands and deforms, or when the cover 300 deforms due to vibration of the battery device, thus reducing safety hazards. Furthermore, since the insulating film is easier to form than the insulating plate, especially as the size increases (the forming difficulty of the insulating plate is higher), and the insulating film is thinner, it can save top space and weight of the battery device. In addition, the insulating film is a flexible material and is easier to compress, further reducing the space occupied.

[0077] It should be noted that the battery devices shown in the accompanying drawings and described in this specification are merely a few examples among many battery devices capable of employing the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any detail or component of the battery devices shown in the accompanying drawings or described in this specification.

[0078] Exemplary embodiments of the battery device proposed in this invention have been described and / or illustrated in detail above. However, the embodiments of this invention are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms "a," "an," and "the above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising," "including," and "having" are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc. Furthermore, the terms "first" and "second," etc., in the claims and specification are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.

[0079] Although the battery device proposed in this invention has been described according to different specific embodiments, those skilled in the art will recognize that modifications can be made to the implementation of this invention within the spirit and scope of the claims.

Claims

1. A battery device, characterized in that, The device includes a battery pack and a case cover. The battery pack comprises a plurality of batteries arranged along a first direction, with the terminal assemblies of the batteries located on surfaces other than the top surface of the batteries. An insulating film is disposed on the top of the battery pack. The case cover is located above the insulating film and has a plurality of ribs protruding toward the insulating film. A plurality of first buffer layers are disposed between the insulating film and the battery pack, and the plurality of first buffer layers are spaced apart along the first direction. A plurality of second buffer layers are disposed between the insulating film and the case cover, and the plurality of second buffer layers are spaced apart along the first direction. The plurality of second buffer layers correspond one-to-one with the plurality of first buffer layers. The plurality of ribs correspond one-to-one with the plurality of first buffer layers. The top of each battery has a flange structure protruding toward the insulating film, and a first buffer layer is disposed between the flange structures of at least two adjacent batteries.

2. The battery device according to claim 1, characterized in that, The insulating film is bonded to the battery pack.

3. The battery device according to claim 2, characterized in that, The battery pack has end structures at both ends along the first direction, and the end structures are batteries or end plates; wherein the insulating film is adhesively bonded to the two end structures of the battery pack.

4. The battery device according to claim 1, characterized in that, It also includes a lid, which is located above the insulating film; wherein the insulating film is adhesively bonded to the lid.

5. The battery device according to claim 1, characterized in that, The insulating film covers at least a portion of at least two adjacent batteries.

6. The battery device according to claim 1, characterized in that: The first buffer layer is bonded to the insulating film with adhesive; and / or The first buffer layer is made of cushioning foam.

7. The battery device according to claim 1, characterized in that, It also includes a lid, which is located above the insulating film; wherein a second buffer layer is provided between the insulating film and the lid.

8. The battery device according to claim 7, characterized in that, A plurality of second buffer layers are provided between the insulating film and the box cover, and the plurality of second buffer layers are arranged at intervals along the first direction.

9. The battery device according to claim 8, characterized in that: The lid has multiple ribs protruding towards the insulating film, each rib corresponding to one of the multiple second buffer layers, and the ribs abutting against the second buffer layers; and / or A plurality of first buffer layers are disposed between the insulating film and the battery pack, the plurality of first buffer layers are arranged at intervals along the first direction, and the plurality of first buffer layers correspond one-to-one with the plurality of second buffer layers.

10. The battery device according to claim 7, characterized in that: The top of the battery has a flange structure protruding toward the insulating film, and the area between the flange structures of at least two adjacent batteries corresponds to the position of the second buffer layer; and / or The second buffer layer is bonded to the insulating film with adhesive; and / or The second buffer layer is made of cushioning foam.

11. The battery device according to any one of claims 1 to 10, characterized in that, The insulating film is an integral structure.

12. The battery device according to any one of claims 1 to 10, characterized in that, An insulating support is provided on the surface of the battery, and an opening is provided on the portion of the insulating support located at the top of the battery.

13. The battery device according to any one of claims 1 to 10, characterized in that, Along a second direction perpendicular to the first direction, the length of the battery is 400mm to 2500mm: wherein the thickness of the battery along the first direction accounts for 1 / 50 to 1 / 2 of the length of the battery, and the ratio of the height of the battery along the height direction to the thickness of the battery along the first direction is 0.05 to 2.

Images