Pole group protection structure and battery cell

Abstract

The utility model provides a pole group protection structure and a battery cell, and relates to the field of battery cell assembly. The pole group protection structure is provided with a main body, and the main body comprises a plurality of protection pieces which are sequentially connected end to end, so that the main body forms a frame-shaped structure matched with a pole group; and when the main body is connected with the pole group, each protection piece is correspondingly attached to each side part of the pole group. Therefore, before the battery cell is assembled, the main body can be connected with the pole group, so that each side part of the pole group is attached and connected with the protective part, and then the pole group is transferred and assembled with other structures of the battery cell, so that the situations that the pole group is damaged in the transferring and assembling processes and the like can be avoided.

Description

Technical Field

[0001] The present application relates to the field of battery cell assembly, and in particular to a pole group protection structure and a battery cell. Background Art

[0002] The electrode group is one of the indispensable structures in the battery cell. At present, during the assembly process of the battery cell, no protective structure is set on the side of the electrode group, which is very easy to damage the electrode group, thereby affecting the performance and safety performance of the battery cell and even the entire battery pack; in addition, since there is no protective structure on the side of the electrode group, the electrode group is also very easy to be damaged during transportation. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide a pole group protection structure and a battery cell to solve the problem that the pole group is easily damaged due to the lack of a protection structure on the side of the pole group during the existing pole group transportation and battery cell assembly process.

[0004] According to the above-mentioned purpose, the first aspect of the utility model provides a pole group protection structure, wherein the main body includes a plurality of protective members connected end to end in sequence, so that the main body forms a frame-like structure adapted to the pole group; when the main body is connected to the pole group, each of the protective members is correspondingly fitted with each side of the pole group.

[0005] Preferably, the protective member includes at least a first end plate, a second end plate, a first side plate and a second side plate; when the main body is connected to the pole group, the first end plate and the second end plate are respectively located at the two ends of the length direction of the pole group, and the first side plate and the second side plate are respectively located on both sides of the length direction of the pole group.

[0006] Preferably, the first end plate, the first side plate, the second end plate and the second side plate are connected end to end in sequence to form a receiving portion having a rectangular parallelepiped structure, and the receiving portion is adapted to correspond to the pole group.

[0007] Preferably, the first end plate and the second end plate are respectively formed with a first through hole and a second through hole; when the main body is connected to the pole group, two pole ears of the pole group pass through the first through hole and the second through hole respectively.

[0008] Preferably, along the width direction of the pole group, two end surfaces of the first end plate and the second end plate in the length direction are respectively formed with convex portions so as to be connected with the first side plate and the second side plate accordingly.

[0009] Preferably, connection holes corresponding to the protrusions are respectively formed at both ends of the first side plate and the second side plate in the length direction, and each of the connection holes penetrates the first side plate and the second side plate along the width direction of the pole group.

[0010] Preferably, the protrusion passes through the corresponding connecting hole and is connected to the connecting hole by heat melting.

[0011] Preferably, along the width direction of the pole group, the protrusion height of the protrusion is set to H, the thickness of the first side plate and the second side plate are both A, and A-0.2≤H≤A+1.

[0012] Preferably, the first side plate and the second side plate are bonded to the pole group.

[0013] According to a second aspect of the utility model, a battery cell is provided, wherein the battery cell comprises the electrode group protection structure as described above.

[0014] According to the pole group protection structure and battery cell of the utility model, by providing a plurality of protective parts connected in sequence, the main body of the protection structure can be formed into a frame structure adapted to the pole group, so that before the battery cell is assembled, the main body can be connected to the pole group so that each side of the pole group is fitted with the protective parts, and then the pole group is transported and assembled with other structures of the battery cell, so that the pole group can be prevented from being damaged during transportation and assembly.

[0015] 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

[0016] 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.

[0017] Figure 1 is a schematic diagram of a main body according to an embodiment of the utility model;

[0018] Figure 2 It is a partial schematic diagram of the main body and the pole group when assembled according to an embodiment of the utility model;

[0019] Figure 3 It is a partial exploded view of the main body and the pole group when assembled according to the embodiment of the utility model.

[0020] Icons: 1-pole group; 10-pole ear; 20-first end plate; 21-first side plate; 22-second end plate; 23-second side plate; 24-protrusion; 25-connecting hole; 26-tape. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] like Figures 1 to 3 As shown, according to the first aspect of the utility model, a pole group 1 protection structure is provided, the protection structure is formed with a main body, and the main body includes a plurality of protection members connected end to end in sequence, so that when the main body is connected to the pole group 1, each side of the pole group 1 is connected with a protection member, thereby effectively preventing the pole group 1 from being damaged during transportation or assembly. In the following, the specific structure of the above-mentioned parts of the pole group 1 protection structure according to the utility model will be described in detail.

[0031] In this embodiment, if Figure 1As shown, the protective member includes a first end plate 20, a second end plate 22, a first side plate 21 and a second side plate 23, and when the main body is connected to the pole group 1, the first end plate 20 and the second end plate 22 are respectively located at the two ends of the length direction of the pole group 1, and the first side plate 21 and the second side plate 23 are respectively located at the two sides of the length direction of the pole group 1. That is, the first end plate 20, the first side plate 21, the second end plate 22 and the second side plate 23 are connected end to end in sequence, so that the main body forms a frame-like structure and surrounds a receiving portion with a rectangular parallelepiped structure, which is adapted to the pole group 1. In this way, the first end plate 20, the first side plate 21, the second end plate 22 and the second side plate 23 of the main body can protect the four side portions of the pole group 1 to prevent the pole group 1 from being damaged by collisions during transportation and assembly.

[0032] It should be noted that the number of protective members is not limited thereto. For example, each side of the pole group 1 in this embodiment is respectively connected to a corresponding protective member; or, each side of the pole group 1 can also be respectively connected to multiple protective members, as long as the above-mentioned technical effects can be achieved.

[0033] Further, the first end plate 20 and the second end plate 22 are respectively formed with a first through hole and a second through hole, so that when the main body is connected to the pole group 1, the two pole ears 10 of the pole group 1 can respectively pass through the first through hole and the second through hole, so that the protective structure can protect the side of the pole group 1 without affecting the normal use function of the pole group 1. In addition, the first end plate 20 and the second end plate 22 can be formed as an integrated structure or a split structure.

[0034] Furthermore, when the main body is connected to the pole group 1, the length direction of the first end plate 20 and the second end plate 22 is the same as the width direction of the pole group 1; the two end surfaces of the first end plate 20 and the second end plate 22 in the length direction are respectively formed with convex parts 24; correspondingly, the two ends of the first side plate 21 and the second side plate 23 in the length direction are respectively formed with connection holes 25 corresponding to the convex parts 24, and each connection hole 25 penetrates the first side plate 21 and the second side plate 23 along the width direction of the pole group 1. Thus, the first end plate 20, the first side plate 21, the second end plate 22 and the second side plate 23 can be connected in sequence through the convex parts 24 and the connection holes 25.

[0035] In this embodiment, if Figures 2 to 3As shown, the protrusion 24 is formed into a cylindrical structure, and the connection hole 25 is formed into an oblong hole, that is, when the protrusion 24 and the connection hole 25 are assembled correspondingly, there is still a gap in the connection hole 25. At this time, the gap is filled by hot-melt connection, which can effectively improve the stability and firmness of the connection between the first end plate 20 and the second end plate 22 and the first side plate 21 and the second side plate 23. In addition, along the width direction of the pole group 1, the protrusion height of the protrusion 24 is set to H, and the thickness of the first side plate 21 and the second side plate 23 is A. It is preferred to ensure that A-0.2≤H≤A+1, so that the stability of the overall structure of the main body can be further improved.

[0036] In this embodiment, the main body and the pole group 1 are fixed by bonding, that is, when the pole group 1 is arranged in the accommodating portion, the outer side walls of the first side plate 21 and the second side plate 23 are provided with tape 26, and the tape 26 extends to the top and bottom of the pole group 1, so that the main body and the pole group 1 are stably bonded.

[0037] According to the pole group 1 protection structure of the utility model, by providing a plurality of protection parts connected in sequence, the main body of the protection structure can be formed into a frame structure adapted to the pole group 1, so that before the battery cell is assembled, the main body can be connected to the pole group 1 so that each side of the pole group 1 is fitted with the protection parts, and then the pole group 1 is transported and assembled with other structures of the battery cell, so that the pole group 1 can be prevented from being damaged during transportation and assembly.

[0038] According to a second aspect of the present invention, a battery cell is provided, wherein the battery cell comprises the electrode group 1 protection structure as described above.

[0039] 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 pole group protection structure, characterized in that: The pole group protection structure is formed with a main body, and the main body includes a plurality of protection members connected end to end in sequence, so that the main body forms a frame-like structure adapted to the pole group; when the main body is connected to the pole group, each of the protection members is correspondingly fitted with each side of the pole group; The protective member at least comprises a first end plate, a second end plate, a first side plate and a second side plate; when the main body is connected to the pole group, the first end plate and the second end plate are respectively located at two ends of the pole group in the length direction, and the first side plate and the second side plate are respectively located at two sides of the pole group in the length direction; Along the width direction of the pole group, two end faces of the first end plate and the second end plate in the length direction are respectively formed with convex portions so as to be connected with the first side plate and the second side plate accordingly; connecting holes corresponding to the convex portions are respectively formed at the two ends in the length direction of the first side plate and the second side plate, and each of the connecting holes penetrates the first side plate and the second side plate along the width direction of the pole group; along the width direction of the pole group, the protruding height of the convex portion is set to H, and the thickness of the first side plate and the second side plate are both A, A-0.2≤H≤A+1.

2. The pole group protection structure according to claim 1, characterized in that: The first end plate, the first side plate, the second end plate and the second side plate are connected end to end in sequence to form a receiving portion having a rectangular parallelepiped structure, and the receiving portion is adapted to correspond to the pole group.

3. The pole group protection structure according to claim 1, characterized in that: The first end plate and the second end plate are respectively formed with a first through hole and a second through hole; when the main body is connected to the pole group, two pole ears of the pole group pass through the first through hole and the second through hole respectively.

4. The pole group protection structure according to claim 1, characterized in that: The protrusion passes through the corresponding connecting hole and is connected with the connecting hole by heat melting.

5. The pole group protection structure according to claim 1, characterized in that: The first side plate and the second side plate are bonded to the pole group.

6. A battery cell, characterized in that: The battery core comprises the electrode group protection structure as claimed in any one of claims 1 to 5.

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