Battery cell side plate and battery cell

Abstract

The utility model provides a battery cell side plate and a battery cell, and relates to the field of battery cell structures. The battery cell side plate comprises a main body which is of a wavy structure; the hollow part penetrates through the two ends of the main body in the thickness direction; the hollow part comprises a first exhaust hole and a second exhaust hole; the first exhaust hole corresponds to an anti-explosion valve of the battery cell, and the plurality of second exhaust holes are distributed at intervals along the length direction of the main body. The main body of the battery cell side plate is arranged to be of a wavy structure, so that the damping and buffering effects can be effectively achieved; besides, the battery cell side plate is further provided with a hollow part penetrating through the two ends of the main body in the thickness direction, the hollow part comprises a first exhaust hole and a plurality of second exhaust holes, the first exhaust hole corresponds to an anti-explosion valve of the battery cell, and the plurality of second exhaust holes are distributed at intervals in the length direction of the main body. Therefore, a passage can be formed between the side plate of the battery cell and the shell through the hollow part, so that the air exhaust of the battery cell is facilitated.

Description

Technical Field

[0001] The present application relates to the field of battery cell structures, and in particular to a battery cell side plate and a battery cell. Background Art

[0002] Lithium-ion batteries are usually provided with side plates, which are arranged between the battery cell and the shell to further protect the battery cell. However, the existing side plates are all ordinary rectangular plates, which only have the function of supporting the battery cell, but do not have the technical effect of buffering and shock absorption. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide a battery cell side plate and a battery cell to solve the problem that the existing battery cell side plate has poor buffering and shock absorption effect.

[0004] According to the above purpose, the first aspect of the present utility model provides a battery cell side plate, wherein the battery cell side plate comprises:

[0005] The main body is formed into a wave-like structure;

[0006] The hollow portion passes through both ends of the main body in the thickness direction; the hollow portion includes a first exhaust hole and a second exhaust hole; the first exhaust hole corresponds to the explosion-proof valve of the battery cell, and a plurality of the second exhaust holes are spaced apart along the length direction of the main body.

[0007] Preferably, the length of the main body is 280 mm to 980 mm.

[0008] Preferably, the thickness of the main body is 0.5 mm to 1.5 mm.

[0009] Preferably, the width of the main body is 8 mm to 25 mm.

[0010] Preferably, the main body comprises a plurality of arc-shaped portions connected in series, and the radius of each arc-shaped portion is 1 mm to 8 mm.

[0011] Preferably, when the second exhaust hole is formed as a circular through hole, the radius of the second exhaust hole is 2 mm to 5 mm.

[0012] Preferably, along the length direction of the main body, the distance between any two adjacent second exhaust holes is 5 mm to 30 mm.

[0013] Preferably, the body is formed as a plastic part.

[0014] According to a second aspect of the utility model, a battery cell is provided, wherein the battery cell comprises the battery cell side plate as described above.

[0015] Preferably, the battery cell further comprises an insulating film, and the insulating film is coated on the battery cell side plate and the outer wall of the battery cell.

[0016] According to the battery cell side plate and battery cell of the utility model, the main body of the battery cell side plate is set to a wavy structure, which can effectively play a role of shock absorption and buffering; in addition, the battery cell side plate is also provided with a hollow portion running through both ends of the main body in the thickness direction, and the hollow portion includes a first exhaust hole and a second exhaust hole, the first exhaust hole corresponds to the explosion-proof valve of the battery cell, and the plurality of second exhaust holes are spaced apart along the length direction of the main body, so that a passage can be formed between the battery cell side plate and the shell through the hollow portion, thereby facilitating the exhaust of the battery cell.

[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a partial schematic diagram of a main body according to an embodiment of the utility model;

[0020] Figure 2 is a partial top view of a main body according to an embodiment of the utility model;

[0021] Figure 3 It is a partial front view of the main body according to an embodiment of the utility model.

[0022] Icon: 1-main body; 20-first exhaust hole; 21-second exhaust hole. DETAILED DESCRIPTION

[0023] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0024] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0025] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0026] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0027] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0028] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0029] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0030] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0031] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0032] like Figures 1 to 3 As shown, according to the first aspect of the utility model, a battery cell side plate is provided, the battery cell side plate comprises a main body 1 and a hollow portion, the main body 1 is formed into a wave-like structure so as to have a better buffering and shock absorbing effect, and the hollow portion runs through both ends of the main body 1 in the thickness direction to form an exhaust channel from the battery cell to the shell explosion-proof valve. In the following, the specific structure of the above-mentioned parts of the battery cell side plate according to the utility model will be described in detail.

[0033] In this embodiment, the length of the main body 1 is 280mm-980mm, the thickness of the main body 1 is 0.5mm-1.5mm, and the width of the main body 1 is 8mm-25mm, but the specific specifications of the main body 1 should be determined according to the actual situation. For example, when the length of the lithium-ion battery shell is 500mm and the width is 15mm, the length of the main body 1 can be set to 480mm, and the width of the main body 1 can be set to 11mm, as long as the main body 1 can correspond to the side of the battery cell, so as to achieve the buffering and shock absorbing effect of the main body 1 on the battery cell. In addition, it is preferred to set the thickness of the main body 1 (i.e., h) to 0.8mm. If the thickness of the main body 1 is too small, it is not conducive to the exhaust of the battery cell, and the strength of the supporting battery cell will be reduced; if the thickness of the main body 1 is too large, the material cost will increase, and the overly thick main body 1 will occupy the internal space of the battery, thereby reducing the energy density of the battery.

[0034] Furthermore, if Figure 3 As shown, the main body 1 includes a plurality of arc-shaped portions connected in sequence, so that the main body 1 forms a wave-like structure. Preferably, the radius (ie, R) of each arc-shaped portion is 1 mm to 8 mm (set to 3 mm in this embodiment).

[0035] In addition, the hollow portion includes a first exhaust hole 20 and a second exhaust hole 21, wherein the first exhaust hole 20 corresponds to the explosion-proof valve (referring to the shape, size, etc. corresponding adaptation); a plurality of second exhaust holes 21 are spaced apart and distributed along the length direction of the main body 1. Preferably, as Figure 2 As shown in the figure, when the second exhaust hole 21 is formed as a circular through hole (actually refers to the second exhaust hole 21 formed as a circular through hole in the top view of the main body 1), the radius of the second exhaust hole 21 (ie, R 1 ) is 2mm~5mm (set to 4mm in this embodiment); further, along the length direction of the main body 1, the distance between any two adjacent second exhaust holes 21 (ie a) is 5mm~30mm (set to 20mm in this embodiment).

[0036] It should be noted that the above-mentioned numerical value or numerical range is the optimal range obtained through multiple experiments to ensure the above-mentioned technical effect of the main body 1.

[0037] In addition, the main body 1 in this embodiment is formed as a plastic part, which is beneficial to the overall lightweight of the battery cell and facilitates the connection between the main body 1 and the battery cell.

[0038] According to the battery cell side plate of the utility model, the main body 1 of the battery cell side plate is set to a wavy structure, which can effectively play a role of shock absorption and buffering; in addition, the battery cell side plate is also provided with a hollow portion running through both ends of the main body 1 in the thickness direction, and the hollow portion includes a first exhaust hole 20 and a second exhaust hole 21. The first exhaust hole 20 corresponds to the explosion-proof valve of the battery cell, and the plurality of second exhaust holes 21 are spaced apart along the length direction of the main body 1. In this way, a passage can be formed between the battery cell side plate and the shell through the hollow portion, thereby facilitating the exhaust of the battery cell.

[0039] According to the second aspect of the utility model, a battery cell is provided, wherein the battery cell comprises the battery cell side plate as described above. The battery cell also comprises an insulating film, and the insulating film is coated on the battery cell side plate and the outer wall of the battery cell, so that the battery cell side plate and the battery cell can be stably connected through processes such as thermoplasticity. In addition, the above-mentioned hollow portion can further increase the stability of the insulating film coating.

[0040] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery cell side plate, characterized in that: The battery cell side plate comprises: The main body is formed into a wave-like structure; The hollow portion passes through both ends of the main body in the thickness direction; the hollow portion includes a first exhaust hole and a second exhaust hole; the first exhaust hole corresponds to the explosion-proof valve of the battery cell, and a plurality of the second exhaust holes are spaced apart along the length direction of the main body.

2. The battery cell side plate according to claim 1, characterized in that: The length of the main body is 280 mm to 980 mm.

3. The battery cell side plate according to claim 1, characterized in that: The thickness of the main body is 0.5 mm to 1.5 mm.

4. The battery cell side plate according to claim 1, characterized in that: The width of the main body is 8 mm to 25 mm.

5. The battery cell side plate according to claim 1, characterized in that: The main body includes a plurality of arc-shaped portions connected in sequence, and the radius of each arc-shaped portion is 1 mm to 8 mm.

6. The battery cell side plate according to claim 1, characterized in that: When the second exhaust hole is formed as a circular through hole, the radius of the second exhaust hole is 2 mm to 5 mm.

7. The battery cell side plate according to claim 1, characterized in that: Along the length direction of the main body, the distance between any two adjacent second exhaust holes is 5 mm to 30 mm.

8. The battery cell side plate according to claim 1, characterized in that: The body is formed as a plastic part.

9. A battery cell, characterized in that: The battery cell comprises the battery cell side plate according to any one of claims 1 to 8.

10. The battery cell according to claim 9, characterized in that: The battery cell further comprises an insulating film, and the insulating film is coated on the battery cell side plate and the outer wall of the battery cell.

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