A battery separator and a battery module

Abstract

This utility model relates to a battery separator and a battery module, including a first side plate and a second side plate spaced apart, with a connecting plate between the first side plate and the second side plate. The connecting plate is arc-shaped, with the arc-shaped opening facing the middle of the first side plate and the second side plate. When the first side plate and the second side plate are compressed by an external force, the connecting plate deforms, and the distance between the first side plate and the second side plate decreases. After the external force acting on the first side plate and the second side plate is removed, the arc-shaped connecting plate recovers its deformation under its own action, thereby restoring the distance between the first side plate and the second side plate to its original position. This allows for automatic adjustment of the distance between two adjacent batteries during battery expansion, maintaining normal battery operation. Multiple connecting plates are provided between the first side plate and the second side plate, resulting in high overall strength of the battery separator, which can better protect the battery. After being compressed, it can stably recover its deformation under the action of the arc-shaped connecting plate.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a battery separator and a battery module. Background Technology

[0002] A battery module is made by placing multiple independent batteries together and connecting them to form a large battery. At this time, the battery may expand during charging and discharging. In the existing technology, in order to reserve space for the battery expansion, an elastic buffer pad of a certain thickness is usually set between adjacent batteries. However, after using elastic buffer points between batteries, the overall rigidity of the battery is poor, and the recovery effect after being compressed is poor. Utility Model Content

[0003] Therefore, it is necessary to provide a battery separator and battery module to address the problems in the existing technology.

[0004] A battery separator, characterized in that it includes a first side plate and a second side plate spaced apart, a connecting plate is provided between the first side plate and the second side plate, the connecting plate is arc-shaped, the arc-shaped opening faces the middle position of the first side plate and the second side plate, when the first side plate and the second side plate are squeezed by external force, the connecting plate deforms, and the distance between the first side plate and the second side plate becomes smaller.

[0005] In one embodiment, the connecting plate is provided in multiple ways, and the arc-shaped openings of the connecting plate face different directions.

[0006] In one embodiment, the two connecting plates located at the two ends of the first side plate and the second side plate are oriented in opposite directions, forming a circular structure.

[0007] In one embodiment, a limiting structure is provided between the first side plate and the second side plate to limit the minimum distance between the first side plate and the second side plate.

[0008] In one embodiment, the limiting structure includes a limiting strip, one side of which is connected to the inner side of the first side plate or the second side plate, and the other side of which is a suspended part in a suspended state, with a preset distance between it and the inner side of the second side plate or the first side plate.

[0009] In one embodiment, the limiting strip has a T-shaped cross-section, including a vertical portion connected to the inner side of the first side plate or the second side plate, and a suspended portion perpendicular to the vertical portion.

[0010] In one embodiment, a limiting groove is provided on the inner side of the second side plate or the first side plate. The limiting groove is correspondingly provided with a limiting strip. When the first side plate and the second side plate deform and move closer together, the horizontal part of the limiting strip that is suspended in the air moves in the limiting groove.

[0011] In one embodiment, the battery separator is integrally formed.

[0012] A battery module employs the aforementioned battery separator, positioned between adjacent batteries to separate them.

[0013] The aforementioned battery separator and battery module have an arc-shaped connecting plate between the first side plate and the second side plate. When the first side plate and the second side plate are subjected to external pressure, the arc-shaped connecting plate is deformed, thereby changing the distance between the first side plate and the second side plate. After the external force acting on the first side plate and the second side plate is removed, the arc-shaped connecting plate recovers its deformation under its own action, thereby restoring the distance between the first side plate and the second side plate to its original position. This allows for automatic adjustment of the distance between two adjacent batteries during battery expansion, maintaining normal battery operation. Multiple connecting plates are provided between the first side plate and the second side plate, and the battery separator has high overall strength, which can better protect the battery. After being compressed, it can stably recover its deformation under the action of the arc-shaped connecting plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the battery separator of this utility model;

[0015] Among them, 1. First side plate; 2. Second side plate; 3. Connecting plate; 4. Limiting structure; 41. Limiting strip; 42. Limiting groove. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] like Figure 1 As shown, a battery separator is characterized in that it includes a first side plate 1 and a second side plate 2 arranged at intervals, and a connecting plate 3 is provided between the first side plate 1 and the second side plate 2. The connecting plate 3 is arranged in an arc shape, and the arc-shaped opening faces the middle position of the first side plate 1 and the second side plate 2. When the first side plate 1 and the second side plate 2 are squeezed by external force, the connecting plate 3 deforms, and the distance between the first side plate 1 and the second side plate 2 becomes smaller.

[0020] An arc-shaped connecting plate 3 is provided between the first side plate 1 and the second side plate 2. When the first side plate 1 and the second side plate 2 are subjected to external force, the arc-shaped connecting plate is deformed, thereby changing the distance between the first side plate 1 and the second side plate 2. After the external force acting between the first side plate 1 and the second side plate 2 is removed, the arc-shaped connecting plate 3 recovers its deformation under its own action, thereby restoring the distance between the first side plate 1 and the second side plate 2 to its original position. In this way, the distance between two adjacent batteries can be automatically adjusted during the battery expansion process to maintain the normal operation of the battery. Multiple connecting plates 3 are provided between the first side plate 1 and the second side plate 2. The overall strength of the battery separator is high, which can better protect the battery. After being compressed, it can stably recover its deformation under the action of the arc-shaped connecting plate 3.

[0021] At this time, since the first side plate 1 and the second side plate 2 are connected by a connecting plate 3, in order to improve the overall strength of the battery separator, in this embodiment, multiple connecting plates 3 are provided, and the arc-shaped openings of the connecting plates 3 face different directions. Specifically, taking the cross-section of the battery separator as an example, the arc-shaped openings face the left and right sides. In this way, the connecting plates 3 face different directions, which can increase the stability of the connection between the first side plate and the second side plate through the connecting plate. When the connecting plate deforms, the overall stability of the battery separator can be further improved because the connecting plates face different directions.

[0022] Furthermore, since the first side plate 1 and the second side plate 2 are mainly connected and supported by a connecting part, in order to better improve the overall strength of the battery separator, in this embodiment, the two connecting plates 3 located at both ends of the first side plate 1 and the second side plate are oriented in opposite directions to form a circular structure. Of course, the circular structure at this time is nearly circular, not required to be a standard circle. Specifically, it can be a circle, an ellipse, or a near-circular or near-elliptical shape. In this way, after the two ends of the battery separator are formed into a circular structure, the compressive strength at the two ends is increased, which can increase the overall strength of the battery separator. Of course, at this time, the connecting plate 3 can also be formed into a circular structure in the middle position of the first side plate 1 and the second side plate 2, thereby improving the compressive strength in the middle position.

[0023] When the first side plate 1 and the second side plate 2 are deformed under pressure, in order to avoid the connection plate 3 breaking directly during deformation due to excessive pressure, it is necessary to limit the minimum distance between the first side plate 1 and the second side plate 2. Therefore, in this embodiment, a limiting structure 4 is provided between the first side plate 1 and the second side plate 2 to limit the minimum distance between the first side plate 1 and the second side plate 2.

[0024] Specifically, the limiting structure 4 includes a limiting strip 41. One side of the limiting strip 41 is connected to the inner side of the first side plate 1 or the second side plate 2, and the other side of the limiting strip 41 is a suspended portion with a preset distance from the inner side of the second side plate 2 or the first side plate 1. Thus, the limiting strip 41 is positioned between the first side plate 1 and the second side plate 2 and is fixed to one of the side plates. The other side of the limiting strip 41 is spaced from the other side. When the first side plate 1 and the second side plate 2 are subjected to external force, the distance between them decreases, and the distance between the limiting strip 41 and the side plate gradually decreases until the suspended portion of the limiting strip 41 abuts against the side plate. This causes the first side plate 1 and the second side plate 2 to continue moving and reducing the distance, thereby limiting the minimum distance between the first side plate 1 and the second side plate 2.

[0025] To improve the limiting effect of the limiting strip 41 between the first side plate 1 and the second side plate 2, the limiting strip 41 has a T-shaped cross-section, including a vertical part connected to the inner side of the first side plate 1 or the second side plate 2, and a suspended part perpendicular to the vertical part. The size of the suspended part can be increased, thereby increasing the contact area between the suspended part and the inner side of the first side plate 1 / second side plate 2. This increases the overall stability of the limiting strip 41, making it less prone to bending when subjected to external forces.

[0026] Furthermore, a limiting groove 42 is provided on the inner side of the second side plate 2 or the first side plate 1. The limiting groove 42 is correspondingly provided with the limiting strip 41. When the first side plate 1 and the second side plate 2 deform and move closer together, the horizontal part of the limiting strip 41 that is suspended in the air moves within the limiting groove 42. After the limiting groove 42 is provided, the suspended part of the limiting strip 41 is located within the limiting groove 42, which ensures that the limiting strip 41 is always kept within the limiting groove 42, thereby ensuring that the limiting strip 41 will not be misaligned.

[0027] At the same time, at this time, inclined reinforcing ribs can be added to both sides of the vertical part to increase the strength of the vertical part. Of course, the vertical part should not affect the movement of the limiting strip 41 in the limiting groove 42. That is, the height of the reinforcing rib should not be too high. When the suspended part of the limiting strip 41 abuts against the inner side of the first side plate 1 / second side plate 2, the reinforcing rib will not abut against the outside of the limiting groove 42, thereby ensuring that the limiting strip 41 abuts normally against the inner side of the first side plate 1 / second side plate 2.

[0028] Finally, to ensure the overall strength of the battery separator, the battery separator is integrally molded and can be produced by extrusion molding of PC material during the production process, thus resulting in high overall strength of the battery separator.

[0029] This embodiment also provides a battery module, which uses the above-mentioned battery separator and is disposed between adjacent batteries to separate adjacent batteries.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery separator, characterized in that, It includes a first side plate and a second side plate spaced apart, with a connecting plate between the first side plate and the second side plate. The connecting plate is arc-shaped, and the arc-shaped opening of the connecting plate faces the middle position of the first side plate and the second side plate. When the first side plate and the second side plate are squeezed by external force, the connecting plate deforms, and the distance between the first side plate and the second side plate becomes smaller.

2. The battery separator according to claim 1, characterized in that, The connecting plate is provided in multiple ways, and the arc-shaped openings of the connecting plate face different directions.

3. The battery separator according to claim 2, characterized in that, The two connecting plates located at the two ends of the first and second side plates face opposite directions, forming a circular structure.

4. The battery separator according to any one of claims 1 to 3, characterized in that, A limiting structure is provided between the first side plate and the second side plate to limit the minimum distance between the first side plate and the second side plate.

5. The battery separator according to claim 4, characterized in that, The limiting structure includes a limiting strip, one side of which is connected to the inner side of the first side plate or the second side plate, and the other side of which is a suspended part in a suspended state, with a preset distance between it and the inner side of the second side plate or the first side plate.

6. The battery separator according to claim 5, characterized in that, The limiting strip has a T-shaped cross-section and includes a vertical part connected to the inner side of the first side plate or the second side plate, and a suspended part that is perpendicular to the vertical part.

7. The battery separator according to claim 5, characterized in that, The second side plate or the inner side of the first side plate is provided with a limiting groove, and the limiting groove is correspondingly provided with a limiting strip. When the first side plate and the second side plate are deformed and close together, the horizontal part of the limiting strip that is suspended in the air moves in the limiting groove.

8. The battery separator according to claim 5, characterized in that, The battery separator is integrally formed.

9. A battery module, characterized in that, The battery separator according to any one of claims 1-8 is disposed between adjacent batteries to separate adjacent batteries.

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