Pole group side plate and battery cell
By designing detachably connected pole group side plates and using the first and second shock absorbing parts to reduce the impact on the opposite pole group, the problem of damage to the existing pole group side plates under the action of external forces is solved, and the opposite pole group is achieved. The set has the effect of double protection and easy maintenance.
Patent Information
- Application Number
- CN202420244293.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-01-31
AI Technical Summary
When the battery cell is subjected to external force, the existing side plates of the pole group are prone to collision and squeeze on the pole group, resulting in damage.
A pole group side plate is designed. Its main body is composed of a first side plate and a second side plate that are detachably connected. The two side plates form a first shock absorbing part and a second shock absorbing part respectively to reduce the vibration of the pole group. impact.
Through the design of the shock-absorbing part, it can effectively avoid the collision and extrusion of the battery core against the electrode group under the action of external force, protect the electrode group from damage, and facilitate the maintenance and replacement of the main body.
Smart Images
Figure CN222380698U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery cell structures, and in particular to a pole group side plate and a battery cell. Background Art
[0002] At present, the shells of blade batteries are all welded, that is, a weld is formed on the side of the shell, which will cause more burrs and bosses at the weld inside the shell, which can easily cause damage to the pole group. Therefore, a side plate is often set on the side of the pole group to prevent the burrs and bosses of the shell from damaging the pole group. However, the current pole group side plate is only a common plate structure. When the battery cell is vibrated by external force, the side plate will collide and squeeze the pole group, which will cause certain damage to the pole group. Utility Model Content
[0003] In view of this, the purpose of the present application is to provide a pole group side plate and a battery cell to solve the problem that when the battery cell is subjected to external force, the existing pole group side plate will collide and squeeze the pole group, thereby possibly causing damage to the pole group.
[0004] According to the above-mentioned purpose, the first aspect of the utility model provides a pole group side plate, which is formed with a main body, wherein the main body is located on the side of the pole group and is adapted to the pole group; the main body includes a first side plate and a second side plate that are detachably connected to each other, and a first shock-absorbing part and a second shock-absorbing part are respectively formed on the side where the first side plate and the second side plate are close to each other.
[0005] Preferably, when the main body is connected to the pole group, the first side plate is in contact with the pole group, and the second side plate is located on a side of the first side plate away from the pole group.
[0006] Preferably, the first side plate includes a bottom plate formed in a rectangular parallelepiped structure, and the first shock absorbing portion is formed at the top of the bottom plate in a thickness direction.
[0007] Preferably, the first shock absorbing portion includes a plurality of first protrusions arched in a direction away from the bottom plate, and the plurality of first protrusions are arranged at intervals along the length direction of the bottom plate, so that the first shock absorbing portion forms a wave-like structure.
[0008] Preferably, each of the first protrusions is formed with a first through hole, and the first through hole penetrates opposite sides of the corresponding first protrusion along the width direction of the bottom plate, so that the first protrusion is formed into an annular structure.
[0009] Preferably, the second side plate includes a top plate formed in a rectangular parallelepiped structure, and the second shock absorbing portion is formed at the bottom of the top plate in a thickness direction.
[0010] Preferably, the second shock absorbing portion comprises a plurality of second convex portions arched in a direction away from the top plate, and the plurality of second convex portions are arranged at intervals along the length direction of the top plate, so that the second shock absorbing portion is also formed into a wave-like structure;
[0011] Each of the second protrusions is formed with a second through hole, and the second through hole penetrates through opposite sides of the corresponding second protrusion along the width direction of the top plate.
[0012] Preferably, a slot corresponding to the second protrusion is formed on the outer side wall of the first protrusion; when the first side plate and the second side plate are connected, the second protrusion is correspondingly engaged with the slot, so that the first protrusion and the second protrusion are staggered.
[0013] Preferably, when the first side plate and the second side plate are connected correspondingly, the thickness of the main body is 0.5 mm to 0.8 mm;
[0014] The distance between the top end of the first protrusion away from the bottom plate and the bottom of the top plate is 0.1 mm to 0.3 mm.
[0015] According to a second aspect of the present invention, a battery cell is provided, wherein the battery cell comprises the pole group side plate as described above; the battery cell further comprises an insulating sheet, and the insulating sheet is coated on the outer side of the main body and the pole group.
[0016] According to the pole group side plate and battery cell of the utility model, the pole group side plate is formed with a main body adapted to the pole group, the main body includes a first side plate and a second side plate that are detachably connected to each other, and the first side plate and the second side plate are respectively formed with a first shock absorbing part and a second shock absorbing part on the side close to each other. In this way, the main body can prevent the burrs at the shell weld from damaging the pole group; and when the battery cell is subjected to external force, the first shock absorbing part and the second shock absorbing part can also prevent the pole group from being collided and squeezed; in addition, the first side plate and the second side plate are arranged to be detachably connected to facilitate the maintenance and replacement of the main body.
[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 1is a schematic diagram of a main body according to an embodiment of the utility model;
[0020] Figure 2 It is a schematic diagram of a first side panel according to an embodiment of the utility model.
[0021] Icon: 1-main body; 10-first side panel; 100-bottom panel; 101-first protrusion; 102-card slot; 11-second side panel; 110-top panel; 111-second protrusion. DETAILED DESCRIPTION
[0022] 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.
[0023] 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.
[0024] 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.
[0025] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] 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.
[0031] like Figure 1 and Figure 2As shown, according to the first aspect of the utility model, a pole group side plate is provided, which is formed with a main body 1 adapted to the side of the pole group, and the main body 1 is arranged at the corresponding side of the pole group, and is specifically arranged between the side of the pole group and the shell, so as to avoid burrs at the shell weld and other damage to the pole group. In the following, the specific structure of the above-mentioned parts of the pole group side plate according to the utility model will be described in detail.
[0032] In this embodiment, if Figure 1 As shown, the main body 1 includes a first side plate 10 and a second side plate 11 that are detachably connected to each other, and a first shock absorbing part and a second shock absorbing part are respectively formed on the side where the first side plate 10 and the second side plate 11 are close to each other, so that when the battery cell is subjected to external force, the first shock absorbing part and the second shock absorbing part can avoid collision and extrusion of the electrode group. Specifically, the first side plate 10 and the second side plate 11 are arranged along the thickness direction of the main body 1, that is, when the main body 1 is connected to the electrode group, the first side plate 10 is in contact with the electrode group, and the second side plate 11 is located on the side of the first side plate 10 away from the electrode group (that is, as shown in the figure, the first side plate 10 and the second side plate 11 are distributed in the vertical direction, and the second side plate 11 is located above the first side plate 10).
[0033] Furthermore, if Figure 1 to Figure 2 As shown, the first side plate 10 includes a bottom plate 100 formed into a rectangular parallelepiped structure, and the top of the bottom plate 100 in the thickness direction is formed with the above-mentioned first shock absorbing part. In this embodiment, the first shock absorbing part includes a plurality of first protrusions 101 arched in a direction away from the bottom plate 100, and the plurality of first protrusions 101 are arranged at intervals along the length direction of the bottom plate 100, so that the first shock absorbing part is formed into a wave-like structure. Furthermore, each first protrusion 101 is formed with a first through hole, and the first through hole passes through the opposite sides of the corresponding first protrusion 101 along the width direction of the bottom plate 100, so that each first protrusion 101 is formed into a semicircular ring structure, and the first through hole can provide a plurality of exhaust channels for the pole group to improve the overall safety performance of the battery cell.
[0034] In addition, similar to the first side plate 10, Figure 1 As shown, the second side plate 11 includes a top plate 110 formed into a rectangular parallelepiped structure, and the second shock absorbing part is formed at the bottom of the top plate 110 in the thickness direction. Further, the second shock absorbing part includes a plurality of second convex parts 111 arched in a direction away from the top plate 110, and the plurality of second convex parts 111 are arranged at intervals along the length direction of the top plate 110, so that the second shock absorbing part is also formed into a wave-like structure; in addition, each second convex part 111 is formed with a second through hole, and the second through hole penetrates the opposite sides of the corresponding second convex part 111 along the width direction of the top plate 110, so that the plurality of second through holes can also provide a plurality of exhaust channels for the pole group.
[0035] In this embodiment, if Figure 1 to Figure 2 As shown, the outer wall of the first protrusion 101 is formed with a slot 102 corresponding to the second protrusion 111, that is, when the first side plate 10 and the second side plate 11 are connected, the second protrusion 111 is correspondingly engaged with the slot 102, so that the first protrusion 101 and the second protrusion 111 are staggered. Furthermore, the second side plate 11 in this embodiment is made of corrosion-resistant flexible material, so that when the battery cell is subjected to external impact force, the second side plate 11 relatively close to the outside can produce elastic deformation to achieve buffering and shock absorption; the first side plate 10 in this embodiment is made of polypropylene material to increase the stability of the overall structure of the main body 1, that is, the first protrusion 101 can achieve a supporting effect on the second side plate 11. The structure of the two side plates of the main body 1 as described above can achieve double protection for the pole group.
[0036] Furthermore, in this embodiment, the provision of the card slot 102 can avoid the first side plate 10 and the second side plate 11 from being misaligned, that is, the stability of the overall structure of the main body 1 can be effectively increased.
[0037] It should be noted that there is no specific restriction on the number, size and spacing of the first convex portion 101 and the second convex portion 111, as long as they can cooperate with each other to achieve the above technical effect. In addition, based on the contour structure of the second convex portion 111, the clamping groove 102 formed by the outer wall of the first convex portion 101 is an arc-shaped groove, and the number and position of the clamping groove 102 are also not specifically limited, as long as the stability of the connection between the first side plate 10 and the second side plate 11 can be ensured.
[0038] Preferably, when the first side panel 10 and the second side panel 11 are connected correspondingly, the thickness (D) of the main body 1 along the thickness direction of the main body 1 is 0.5mm~0.8mm; the distance between the top of the first protrusion 101 away from the bottom plate 100 (i.e., point A) and the bottom of the top plate 110 is 0.1mm~0.3mm. The above numerical range is the optimal value that can achieve the above technical effect obtained through multiple experiments.
[0039] According to the pole group side plate of the utility model, the pole group side plate is formed with a main body 1 adapted to the pole group, and the main body 1 includes a first side plate 10 and a second side plate 11 that are detachably connected to each other, and the first side plate 10 and the second side plate 11 are respectively formed with a first shock absorbing part and a second shock absorbing part on the side close to each other. In this way, the main body 1 can prevent the burrs at the shell weld from damaging the pole group; and when the battery cell is subjected to external force, the first shock absorbing part and the second shock absorbing part can also prevent the pole group from being collided and squeezed; in addition, the first side plate 10 and the second side plate 11 are set to be detachably connected to facilitate the maintenance and replacement of the main body 1.
[0040] According to the second aspect of the utility model, a battery cell is provided, wherein the battery cell comprises the pole group side plate as described above; in addition, the battery cell further comprises an insulating sheet, which is coated on the outside of the main body 1 and the pole group to achieve a stable connection between the main body 1 and the pole group.
[0041] 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 side plate, formed with a main body, characterized in that: The main body is located at the side of the pole group and is adapted to the pole group; the main body includes a first side plate and a second side plate that are detachably connected to each other, and a first shock absorbing part and a second shock absorbing part are respectively formed on the side where the first side plate and the second side plate are close to each other.
2. The pole group side plate according to claim 1, characterized in that: When the main body is connected to the pole group, the first side plate is in contact with the pole group, and the second side plate is located on a side of the first side plate away from the pole group.
3. The pole group side plate according to claim 2, characterized in that: The first side plate includes a bottom plate formed in a rectangular parallelepiped structure, and the first shock absorbing portion is formed at the top of the bottom plate in a thickness direction.
4. The pole group side plate according to claim 3, characterized in that: The first shock absorbing portion includes a plurality of first protrusions arched in a direction away from the bottom plate, and the plurality of first protrusions are arranged at intervals along the length direction of the bottom plate, so that the first shock absorbing portion forms a wave-like structure.
5. The pole group side plate according to claim 4, characterized in that: Each of the first protrusions is formed with a first through hole, and the first through hole penetrates through opposite sides of the corresponding first protrusion along the width direction of the bottom plate, so that the first protrusion is formed into a ring structure.
6. The pole group side plate according to claim 4, characterized in that: The second side plate includes a top plate formed in a rectangular parallelepiped structure, and the second shock absorbing portion is formed at the bottom of the top plate in a thickness direction.
7. The pole group side plate according to claim 6, characterized in that: The second shock absorbing portion includes a plurality of second convex portions arched in a direction away from the top plate, and the plurality of second convex portions are arranged at intervals along the length direction of the top plate, so that the second shock absorbing portion is also formed into a wave-like structure; Each of the second protrusions is formed with a second through hole, and the second through hole penetrates through opposite sides of the corresponding second protrusion along the width direction of the top plate.
8. The pole group side plate according to claim 7, characterized in that: A slot corresponding to the second convex portion is formed on the outer side wall of the first convex portion; when the first side plate and the second side plate are connected, the second convex portion is correspondingly engaged with the slot, so that the first convex portion and the second convex portion are staggered.
9. The pole group side plate according to claim 8, characterized in that: When the first side plate and the second side plate are connected correspondingly, the thickness of the main body is 0.5 mm to 0.8 mm; The distance between the top end of the first protrusion away from the bottom plate and the bottom of the top plate is 0.1 mm to 0.3 mm.
10. A battery cell, characterized in that: The battery core comprises the electrode group side plate according to any one of claims 1 to 9; the battery core further comprises an insulating sheet, and the insulating sheet is coated on the outer side of the main body and the electrode group.