CN-115133197-B - Battery device

CN115133197BCN 115133197 BCN115133197 BCN 115133197BCN-115133197-B

Abstract

The invention relates to the technical field of batteries, in particular to a battery device, which comprises a battery pack, wherein the battery pack comprises a plurality of batteries which are arranged along a first direction, a pole assembly of each battery is positioned on the other surfaces of the battery except the top surface, and an insulating film is arranged on the top of the battery pack. Through the design, the battery pack can be prevented from being contacted with the case cover or other structures above the battery pack by using the insulating film when the battery expands and deforms or when the case cover deforms due to vibration of the battery device, so that potential safety hazards of the battery device are reduced. Furthermore, because the insulating film is easier to form compared with the insulating plate, particularly the larger the size is, the higher the forming difficulty of the insulating plate is, and the thickness of the insulating film is thinner, the top space and the weight of the battery device can be saved, in addition, the insulating film is made of flexible materials and is easier to compress, and the occupation of redundant space is further reduced.

Inventors

GU LIANGJIE
GUAN JUNSHAN
YAN TINGLU
ZHANG YONGJIE

Assignees

中创新航科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20220726

Claims (13)

1. The battery device is characterized by comprising a battery pack and a case cover, wherein the battery pack comprises a plurality of batteries arranged along a first direction, pole assemblies of the batteries are positioned on other surfaces of the batteries except the top surface, an insulating film is arranged at the top of the battery pack, the case cover is positioned above the insulating film, the case cover is provided with a plurality of ribs protruding towards the insulating film, a plurality of first buffer layers are arranged between the insulating film and the battery pack at intervals along the first direction, a plurality of second buffer layers are arranged between the insulating film and the case cover at intervals along the first direction, the plurality of second buffer layers are in one-to-one correspondence with the plurality of first buffer layers, the top of the battery is provided with a flange structure protruding towards the insulating film, and the first buffer layers are arranged between at least two adjacent flange structures of the batteries.
2. The battery device of claim 1, wherein the insulating film is adhesively bonded to the battery pack.
3. The battery device according to claim 2, wherein the battery pack has end structures at both ends in the first direction, the end structures being batteries or end plates, respectively, and wherein the insulating film is adhesively bonded to both the end structures of the battery pack.
4. The battery device of claim 1, further comprising a cover over the insulating film, wherein the insulating film is adhesively bonded to the cover.
5. The battery device according to claim 1, wherein the insulating film covers at least part of at least two adjacent cells.
6. The battery device according to claim 1, wherein: the first buffer layer is adhered to the insulating film by adhesive and/or The material of the first buffer layer is buffer foam.
7. The battery device according to claim 1, further comprising a case cover located above the insulating film, wherein a second buffer layer is provided between the insulating film and the case cover.
8. The battery device according to claim 7, wherein a plurality of the second buffer layers are provided between the insulating film and the case cover, the plurality of second buffer layers being arranged at intervals in the first direction.
9. The battery device according to claim 8, wherein: the case cover is provided with a plurality of convex ribs protruding towards the insulating film, the convex ribs are in one-to-one correspondence with the second buffer layers, the convex ribs are abutted against the second buffer layers, and/or A plurality of first buffer layers are arranged between the insulating film and the battery pack, the first buffer layers are arranged at intervals along the first direction, and the first buffer layers and the second buffer layers are in one-to-one correspondence.
10. The battery device according to claim 7, wherein: The top of the battery has a flange structure protruding toward the insulating film, the area between at least two adjacent flange structures of the battery corresponds to the position of the second buffer layer, and/or The second buffer layer is adhered with the insulating film by adhesive and/or The material of the second buffer layer is buffer foam.
11. The battery device according to any one of claims 1 to 10, wherein the insulating film is of a unitary structure.
12. The battery device according to any one of claims 1 to 10, wherein an insulating bracket is provided on a surface of the battery, and an opening is provided in a portion of the insulating bracket located at the top of the battery.
13. The battery device according to any one of claims 1 to 10, wherein the length of the battery is 400mm to 2500mm in a second direction perpendicular to the first direction, wherein the ratio of the thickness of the battery in the first direction to the thickness of the battery in the first direction is 1/50 to 1/2, and the ratio of the height of the battery in the height direction to the thickness of the battery in the first direction is 0.05 to 2.

Description

Battery device Technical Field The invention relates to the technical field of batteries, in particular to a battery device. Background In the existing battery device, when the battery expands and deforms, or when the battery device vibrates to deform the case cover, the battery is easily contacted with the case cover, so that potential safety hazards exist in the battery device. Disclosure of Invention It is a primary object of the present invention to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a battery device that avoids direct contact of the battery pack with the structure above it and reduces space occupation. In order to achieve the above purpose, the invention adopts the following technical scheme: according to an aspect of the present invention, there is provided a battery device including a battery pack including a plurality of cells arranged in a first direction, a post assembly of the cells being located on other surfaces of the cells than a top surface, and an insulating film being provided on top of the battery pack. As can be seen from the above technical solutions, the battery device provided by the present invention has the following advantages and positive effects: The battery device provided by the invention is provided with the insulating film at the top of the battery pack. Through the design, the battery pack can be prevented from being contacted with the case cover or other structures above the battery pack by using the insulating film when the battery expands and deforms or when the case cover deforms due to vibration of the battery device, so that potential safety hazards of the battery device are reduced. Furthermore, because the insulating film is easier to form compared with the insulating plate, particularly the larger the size is, the higher the forming difficulty of the insulating plate is, and the thickness of the insulating film is thinner, the top space and the weight of the battery device can be saved, in addition, the insulating film is made of flexible materials and is easier to compress, and the occupation of redundant space is further reduced. Drawings Various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the invention and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein: fig. 1 is a schematic perspective view of a battery device according to an exemplary embodiment; fig. 2 is an exploded perspective view of the battery device shown in fig. 1; fig. 3 is a schematic perspective view of a part of the structure of the battery device shown in fig. 1; fig. 4 is a schematic perspective view of the battery shown in fig. 2; Fig. 5 is an exploded perspective view of a part of the structure of a battery device according to another exemplary embodiment; fig. 6 is a partial sectional view of a part of the structure of the battery device shown in fig. 5; fig. 7 is an exploded perspective view of a part of the structure of a battery device according to another exemplary embodiment; fig. 8 is a partial sectional view of a part of the structure of the battery device shown in fig. 7; fig. 9 is a partial cross-sectional view of a part of the structure of a battery device according to another exemplary embodiment. The reference numerals are explained as follows: 100. A case; 200. a battery pack; 210. a battery; 211. a flange structure; 220. An end plate; 300. a case cover; 310. Convex ribs; 400. an insulating film; 410. A first buffer layer; 420. a second buffer layer; 500. An insulating support; D. thickness; H. Height of the steel plate; L, length; x, a first direction; y. second direction. Detailed Description Exemplary embodiments that embody features and advantages of the present invention are described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and drawings are intended to be illustrative in nature and not to be limiting. In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this descrip