Battery cover combination structure and battery
By wrapping the cover plate body and the plastic part as a whole with tape, the tabs are electrically connected to the outside of the connecting piece, which solves the problem of space occupied by components in the existing battery cover structure and achieves efficient assembly and low-cost production.
Patent Information
- Application Number
- CN202422651461.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In the existing battery cover structure, the poles and connecting pieces occupy the internal space of the protective shell, resulting in a large number of parts, high production costs and low assembly efficiency.
The cover body, the first plastic part and the second plastic part are wrapped together with adhesive tape, and the tabs pass through the first plastic part, the cover body and the second plastic part in sequence and are electrically connected to the connecting piece, which is located outside the battery box structure.
The number of parts is reduced, assembly efficiency is improved, the internal space of the battery box is increased, and production costs are reduced.
Smart Images
Figure CN223401747U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a battery cover assembly structure and a battery. Background Art
[0002] With the continuous development of the battery industry, batteries, owing to their high energy density and other advantages, are widely used in vehicles, mobile electrical devices, and other fields. A battery primarily consists of a battery box, a battery cover that covers the battery box, and an electrode assembly housed within the battery box. The battery cover not only forms a protective housing for the electrode assembly with the battery box but also serves as an electrical connection between the electrode assembly and external electrical devices. Therefore, the battery cover is a critical component of a battery.
[0003] The battery cover mainly consists of a cover body, a pole, and a connecting piece. At present, in the prior art, the pole is usually arranged to pass through the cover body along the thickness direction of the cover, and one end of the pole located in the protective shell is electrically connected to the pole ear of the pole group through the connecting piece, and the other end of the pole extends out of the protective shell for electrical connection with an external electrical device, so that the pole can be electrically connected to the pole group and the external electrical device. However, the pole extending into the protective shell will occupy the internal space of the protective shell, and the connecting piece distributed in the protective shell will also occupy the internal space of the protective shell. In addition, the above-mentioned arrangement will also result in the need to set a thicker plastic layer on the end face of the cover body close to the pole group, which will also occupy the internal space of the protective shell; secondly, the cover and the plastic layer are connected by riveting or other methods, resulting in a large number of parts, high production costs, and low assembly efficiency. Utility Model Content
[0004] The purpose of the present utility model is to provide a battery cover assembly structure and a battery to solve the above-mentioned problems existing in the battery cover of the prior art.
[0005] To achieve this purpose, the present invention adopts the following technical solutions:
[0006] A battery cover assembly structure includes a cover body, a first plastic part, a second plastic part, and a connecting piece; the first plastic part and the second plastic part are respectively located on both sides of the cover body along an orientation; the orientation is parallel to the thickness direction of the cover body;
[0007] The adhesive tape wraps any two adjacent ones of the cover body, the first plastic part, and the second plastic part into a whole; and / or, the adhesive tape wraps the cover body, the first plastic part, and the second plastic part into a whole;
[0008] The connecting piece is fixedly arranged on the second plastic part; the electrode tab of the electrode group can pass through the first plastic part, the cover body and the second plastic part in sequence along a direction and be electrically connected to the connecting piece, and the connecting piece is also used to electrically connect to an external electrical device.
[0009] As a preferred solution of the above-mentioned battery cover assembly structure, the battery cover assembly structure also includes a via group, the via group includes two vias, the vias pass through the cover body, the first plastic part and the second plastic part along the direction, and the vias are used to pass the tape.
[0010] As a preferred solution of the above battery cover assembly structure, the tab can pass through the via hole and be electrically connected to the connecting piece.
[0011] As a preferred solution of the above-mentioned battery cover assembly structure, the battery cover assembly structure also includes a first mounting hole, which passes through the cover body, the first plastic part and the second plastic part along the direction, and the tab can be electrically connected to the connecting piece through the first mounting hole.
[0012] As a preferred solution of the above battery cover assembly structure, the cross-sectional thickness of the adhesive tape ranges from 25 μm to 150 μm.
[0013] As a preferred solution of the above battery cover assembly structure, the number of windings of the tape is greater than or equal to 1.
[0014] As a preferred solution of the above battery cover assembly structure, the adhesive tape is made of plastic material.
[0015] As a preferred solution of the above battery cover assembly structure, along the orientation, a first accommodating groove is concavely provided on the top surface of the cover body, and the second plastic part is fixedly disposed in the first accommodating groove.
[0016] As a preferred solution of the above battery cover assembly structure, along the orientation, the top surface of the second plastic part is located below the top surface of the cover body, and the distance between the top surface of the second plastic part and the top surface of the cover body ranges from 0 mm to 0.5 mm; or
[0017] In the orientation, the top surface of the second plastic part is located above the top surface of the cover body, and the distance between the top surface of the second plastic part and the top surface of the cover body is in the range of 0 mm to 1 mm.
[0018] The battery comprises a battery shell and an electrode group, and also comprises the above-mentioned battery cover combination structure, wherein the cover body is fixedly connected to the battery shell to form a battery box structure, and the electrode group is arranged in the battery box structure.
[0019] Beneficial effects of the utility model:
[0020] The utility model provides a battery cover assembly structure and a battery. The battery cover assembly structure includes a cover body, a first plastic part, a second plastic part, a connecting piece and an adhesive tape. The first plastic part and the second plastic part are respectively located on both sides of the cover body along the orientation. The orientation is parallel to the thickness direction of the cover body. The adhesive tape wraps any two adjacent ones of the cover body, the first plastic part and the second plastic part into a whole. And / or, the adhesive tape wraps the cover body, the first plastic part and the second plastic part into a whole. The connecting piece is fixedly arranged on the second plastic part. The pole tabs of the electrode group can pass through the first plastic part, the cover body and the second plastic part in sequence along the orientation and be electrically connected to the connecting piece. The connecting piece is also used to electrically connect to an external electrical device.
[0021] This battery cover assembly structure uses adhesive tape to wrap any two adjacent parts of the cover body, first plastic part, and second plastic part together. Alternatively, the adhesive tape can wrap the cover body, first plastic part, and second plastic part together. The adhesive tape not only positions the cover body, first plastic part, and second plastic part relative to each other, but also connects the cover body, first plastic part, and second plastic part together. This simple structure and easy operation effectively improve the production and assembly efficiency of the battery cover assembly structure.
[0022] Secondly, the pole tabs of the electrode group are arranged to pass through the first plastic part, the cover body, and the second plastic part in sequence along the orientation and be electrically connected to the connecting piece. It can be understood that the electrode group, the first plastic part, the cover body, the second plastic part, and the connecting piece are distributed in sequence along the orientation, and the connecting piece and the second plastic part are both distributed outside the battery box structure. This allows the electrode group to be electrically connected to external electrical components while effectively avoiding the problem of occupying the internal space of the protective shell caused by arranging the connecting piece inside the protective shell in the prior art. Furthermore, since the connecting piece is located outside the battery box structure, the thickness of the first plastic part can be effectively thinned compared to the prior art, thereby effectively reducing the problem of occupying the internal space of the protective shell caused by the thick plastic layer in the prior art.
[0023] Therefore, the battery cover assembly structure has a small number of parts and components, high assembly efficiency, can effectively increase the internal space of the battery box structure, and can effectively improve the production efficiency and assembly efficiency of the battery cover assembly structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural diagram of a battery provided by a specific embodiment of the utility model;
[0025] Figure 2 This is an exploded view of the battery cover assembly structure provided by a specific embodiment of the utility model;
[0026] Figure 3 This is a top view of the battery cover assembly structure provided by a specific embodiment of the utility model;
[0027] Figure 4 This is a bottom view of the battery cover assembly structure provided by a specific embodiment of the utility model;
[0028] Figure 5 yes Figure 3 Cross-sectional view along AA;
[0029] Figure 6 yes Figure 3 Unsectioned view along the middle line BB.
[0030] In the picture:
[0031] 1. Cover plate body; 11. First receiving groove; 12. Position limiting hole; 13. Second mounting hole;
[0032] 2. First plastic part; 21. Limiting column; 22. Connecting hole;
[0033] 3. Second plastic part; 31. Annular positioning portion; 32. Second receiving groove;
[0034] 4. Adhesive tape;
[0035] 5. Vias;
[0036] 6. Battery housing;
[0037] 7. Liquid injection hole. DETAILED DESCRIPTION
[0038] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.
[0039] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0041] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.
[0042] like Figure 1-6 As shown, the utility model provides a battery cover assembly structure, which includes a cover body 1, a first plastic part 2, a second plastic part 3, a connecting piece and a tape 4. The first plastic part 2 and the second plastic part 3 are respectively located on both sides of the cover body 1 along the orientation. The orientation is parallel to the thickness direction of the cover body 1. The tape 4 wraps any two adjacent ones of the cover body 1, the first plastic part 2 and the second plastic part 3 into a whole. And / or, the tape 4 wraps the cover body 1, the first plastic part 2 and the second plastic part 3 into a whole. The connecting piece is fixedly arranged on the second plastic part 3. The tabs of the electrode group can pass through the first plastic part 2, the cover body 1 and the second plastic part 3 in sequence along the orientation and be electrically connected to the connecting piece, and the connecting piece is also used to electrically connect to external electrical devices.
[0043] This battery cover assembly structure uses adhesive tape 4 to wrap any two adjacent parts of the cover body 1, first plastic part 2, and second plastic part 3 together. Alternatively, the adhesive tape 4 can wrap the cover body 1, first plastic part 2, and second plastic part 3 together. The adhesive tape 4 not only positions the cover body 1, first plastic part 2, and second plastic part 3 relative to each other, but also connects the cover body 1, first plastic part 2, and second plastic part 3 together. This simple structure and easy operation effectively improve the production and assembly efficiency of the battery cover assembly structure.
[0044] Secondly, the pole tabs of the electrode group are arranged to pass through the first plastic part 2, the cover body 1, and the second plastic part 3 in sequence along the orientation and be electrically connected to the connecting piece. It can be understood that the electrode group, the first plastic part 2, the cover body 1, the second plastic part 3 and the connecting piece are distributed in sequence along the orientation, and the connecting piece and the second plastic part 3 are both distributed outside the battery box structure. This allows the electrode group to be electrically connected to external electrical components, while effectively avoiding the problem of occupying the internal space of the protective shell caused by setting the connecting piece in the protective shell in the prior art. Furthermore, since the connecting piece is located outside the battery box structure, the thickness of the first plastic part 2 can be effectively thinned compared to the prior art, thereby effectively reducing the problem of occupying the internal space of the protective shell caused by the thick plastic layer in the prior art.
[0045] Therefore, the battery cover assembly structure has a small number of parts and components, high assembly efficiency, can effectively increase the internal space of the battery box structure, and can effectively improve the production efficiency and assembly efficiency of the battery cover assembly structure.
[0046] Specifically, in this embodiment, Figure 1-6 As shown, the cover body 1, the first plastic part 2 and the second plastic part 3 are preferably directly wrapped together as a whole by the same adhesive tape 4. This can reduce the amount of adhesive tape 4 used and also reduce the weight of the battery cover assembly structure.
[0047] As an alternative, the cover body 1 and the first plastic part 2 are wrapped together as a whole using a tape 4. The cover body 1 and the second plastic part 3 are then wrapped together as a whole using another tape 4. Thus, the cover body 1, the first plastic part 2, and the second plastic part 3 form an integrated structure.
[0048] As another alternative, the cover body 1 and the first plastic part 2 are wrapped together as a whole using a tape 4. The cover body 1 and the second plastic part 3 are then wrapped together as a whole using another tape 4. The cover body 1, the first plastic part 2, and the second plastic part 3 are then wrapped together as a whole using another tape 4.
[0049] Specifically, a pole is fixedly provided on the connecting piece, and the pole is used for electrically connecting to an external electrical device.
[0050] Specifically, in this embodiment, the cover body 1 is exemplarily configured to be an aluminum plate, which has the characteristics of good strength, good rigidity, light weight, and high temperature resistance.
[0051] Among them, Figure 1 and Figure 3-6 As shown, the battery cover assembly structure further includes a via hole group, which includes two via holes 5. The via holes 5 directionally penetrate the cover body 1, the first plastic part 2, and the second plastic part 3. The via holes 5 are used to pass the adhesive tape 4. This allows the cover body 1, the first plastic part 2, and the second plastic part 3 to be wrapped together as a whole using the adhesive tape 4.
[0052] Preferably, the tab can be electrically connected to the connecting piece through the via 5. It is understood that the via 5 is used to pass the tape 4 and also serves as a mounting hole for the tab. This can effectively improve the processing efficiency of the cover body 1, the first plastic part 2, and the second plastic part 3.
[0053] As an alternative, the battery cover assembly structure further includes a first mounting hole that directionally passes through the cover body 1, the first plastic part 2, and the second plastic part 3. The tab can pass through the first mounting hole to electrically connect to the connecting piece. This also enables the cover body 1, the first plastic part 2, and the second plastic part 3 to be wrapped together as a whole using adhesive tape 4.
[0054] Preferably, the cross-sectional thickness of the adhesive tape 4 ranges from 25 μm to 150 μm, so as to ensure the reliability of wrapping the cover body 1 , the first plastic part 2 and the second plastic part 3 into a whole through the adhesive tape 4 .
[0055] Preferably, the number of wraps of the tape 4 is greater than or equal to one. This further ensures the reliability of wrapping the cover body 1, the first plastic part 2, and the second plastic part 3 together as a whole using the tape 4. Preferably, the tape 4 is made of a plastic material. That is, the tape 4 is a plastic tape. The plastic material may be polyamide, polycarbonate, polyimide, or polyethylene, for example.
[0056] Preferably, the first plastic part 2 is a plastic plate. The second plastic part 3 is a plastic plate. This facilitates processing of the first and second plastic parts 2, 3, effectively increasing the contact area between the first and second plastic parts 2 and the cover body 1. Preferably, along the orientation, the connecting piece is fixedly disposed on the top surface of the second plastic part 3. This facilitates securing the pole on the connecting piece and electrically connecting the pole to an external electrical device. Specifically, in this embodiment, the connecting piece is located above the adhesive tape 4.
[0057] Further preferably, the first plastic part 2 is an integrally formed plastic plate, and the second plastic part 3 is an integrally formed plastic plate, which can reduce the number of parts and improve the structural strength of the first plastic part 2 and the second plastic part 3.
[0058] Alternatively, as Figure 1-6 As shown, along the orientation, the top surface of the cover body 1 is concavely provided with a first accommodating groove 11, and the second plastic part 3 is fixedly disposed in the first accommodating groove 11, so as to improve the volume utilization rate of the cover body 1.
[0059] Specifically, in terms of orientation, setting the thickness of the second plastic part 3 too large will increase the weight of the battery cover assembly structure and will be detrimental to the strength of the battery cover assembly structure. Setting the thickness of the second plastic part 3 too small will be detrimental to the provision of the first receiving groove 11 and will be detrimental to the volume utilization of the cover body 1. Therefore, in this embodiment, if Figure 5As shown, along the orientation, the top surface of the second plastic part 3 is positioned below the top surface of the cover body 1, and the distance L1 between the top surface of the second plastic part 3 and the top surface of the cover body 1 ranges from 0 mm to 0.5 mm. As an alternative, along the orientation, the top surface of the second plastic part 3 is positioned above the top surface of the cover body 1, and the distance between the top surface of the second plastic part 3 and the top surface of the cover body 1 ranges from 0 mm to 1 mm.
[0060] Preferably, if Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, an annular positioning portion 31 is convexly provided on the top surface of the second plastic part 3, and a second accommodating groove 32 is formed between the annular positioning portion 31 and the top surface of the second plastic part 3. The connecting piece is located in the second accommodating groove 32 to define the setting position of the connecting piece.
[0061] Preferably, if Figure 3-6 As shown, the via 5 also extends through the annular positioning portion 31 in the directional direction. Specifically, the via 5 extends through the first plastic part 2, the cover body 1, the second plastic part 3, and the annular positioning portion 31 in the directional direction. This facilitates the electrical connection between the tab and the connecting piece in the second receiving groove 32. Specifically, the tab extends out of the via 5, folds over, and is electrically connected to the connecting piece in the second receiving groove 32.
[0062] Further preferably, in this embodiment, the inner circumferential wall of the second receiving groove 32 is provided with two openings extending outward. These openings correspond to and communicate with the via hole groups and the two via holes 5. The adhesive tape 4 is wrapped around the inner bottom wall of the second receiving groove 32 through the openings. This further reduces the amount of adhesive tape 4 used and improves the reliability of the connection between the first plastic part 2, the cover body 1, and the second plastic part 3 via the adhesive tape 4.
[0063] Further preferably, the annular positioning portion 31 is integrally formed with the second plastic part 3 to further reduce the number of parts.
[0064] Specifically, if the distance between the outer peripheral wall of the annular positioning portion 31 and the outer peripheral wall of the second plastic part 3 is too large, the weight of the battery cover assembly structure will increase and the strength of the battery cover assembly structure will be detrimental. Figure 6 As shown, the spacing range L2 between the outer peripheral wall of the annular positioning portion 31 and the outer peripheral wall of the second plastic part 3 is: 0mm to 10mm.
[0065] Alternatively, as Figure 2 As shown, one of the cover body 1 and the first plastic part 2 is provided with a limiting post 21, and the other is provided with a limiting hole 12. The limiting post 21 is inserted into the limiting hole 12 along a certain direction. This allows the relative position of the cover body 1 and the first plastic part 2 to be determined. Furthermore, the cover body 1 and the second plastic part 3 can also be positioned relative to each other using this method. The specific structure will not be repeated here.
[0066] Preferably, if Figure 1 and Figure 3-6 As shown, the through hole 5 also passes through the limiting column 21 along the direction. Further preferably, the limiting hole 12 includes a portion of the through hole, which can improve processing efficiency.
[0067] like Figure 2-6 As shown, the through hole 5 traverses the first plastic part 2 , the limiting pillar 21 , the cover body 1 , the second plastic part 3 and the annular positioning portion 31 in a directional manner, so as to facilitate electrical connection between the tab and the connecting piece in the second receiving groove 32 .
[0068] Specifically, in this embodiment, Figure 1-3 As shown, there are two second plastic parts 3, two connecting pieces, and two tabs; the two second plastic parts 3, the two connecting pieces, and the two tabs are all arranged in a one-to-one correspondence. Specifically, one of the two tabs is a positive tab, and the other is a negative tab.
[0069] In this embodiment, if Figure 1 and Figure 3 As shown, each second plastic part 3 has two corresponding vias 5. The positive electrode tab includes two positive electrode tab portions. The negative electrode tab includes two negative electrode tab portions. The two positive electrode tab portions are provided in a one-to-one correspondence with the two corresponding vias 5 of one second plastic part 3. The two negative electrode tab portions are provided in a one-to-one correspondence with the two corresponding vias 5 of the other second plastic part 3.
[0070] In this embodiment, if Figure 1 and Figure 3 As shown, for each second plastic part 3 , the second accommodating groove 32 is located between the two through holes 5 .
[0071] Among them, Figure 1 、 Figure 3 and Figure 4 As shown, the battery cover assembly structure further includes a liquid injection hole 7, which passes through the cover body 1 and the first plastic part 2. In this embodiment, the liquid injection hole 7 is exemplarily arranged between the two second plastic parts 3.
[0072] Among them, Figure 1-4 As shown, the cover body 1 also has a second mounting hole 13 for mounting an explosion-proof valve. Specifically, the first plastic part 2 also has a connecting hole 22, which connects to the second mounting hole 13 and is used to communicate with the interior of the battery compartment structure. The specific structure of the explosion-proof valve is known from the prior art and will not be further described here.
[0073] like Figure 1As shown, the present invention also provides a battery, including a battery shell 6 and a pole group, and also includes the above-mentioned battery cover combination structure, the cover body 1 is fixedly connected to the battery shell 6 to form a battery box structure, and the pole group is arranged inside the battery box structure.
[0074] By adopting the above-mentioned battery cover combination structure, the number of parts is reduced and the assembly efficiency is improved; secondly, the internal space of the battery box structure can be effectively increased, so that the volume of the electrode group can be correspondingly increased, thereby effectively improving the working performance of the battery.
[0075] The specific structures of the battery housing 6 and the electrode group belong to the prior art and will not be described in detail here.
[0076] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. A battery cover assembly structure, comprising a cover body (1), a first plastic part (2), a second plastic part (3) and a connecting piece; characterized in that: The first plastic part (2) and the second plastic part (3) are respectively located on both sides of the cover plate body (1) along an orientation; the orientation is parallel to the thickness direction of the cover plate body (1); The adhesive tape (4) wraps any two adjacent parts of the cover plate body (1), the first plastic part (2) and the second plastic part (3) into a whole; and / or, the adhesive tape (4) wraps the cover plate body (1), the first plastic part (2) and the second plastic part (3) into a whole; The connecting piece is fixedly arranged on the second plastic part (3); the pole lug of the pole group can pass through the first plastic part (2), the cover plate body (1) and the second plastic part (3) in sequence along a direction and be electrically connected to the connecting piece, and the connecting piece is also used for electrically connecting to an external electrical device.
2. The battery cover assembly structure according to claim 1, characterized in that: The battery cover assembly structure further comprises a via hole group, wherein the via hole group comprises two via holes (5), wherein the via holes (5) penetrate the cover plate body (1), the first plastic part (2) and the second plastic part (3) along the orientation, and the via holes (5) are used to pass the adhesive tape (4).
3. The battery cover assembly structure according to claim 2, characterized in that: The tab can pass through the via hole (5) to be electrically connected to the connecting piece.
4. The battery cover assembly structure according to claim 1, characterized in that: The battery cover assembly structure further comprises a first mounting hole, the first mounting hole penetrating the cover body (1), the first plastic part (2) and the second plastic part (3) along the orientation, and the tab can pass through the first mounting hole to be electrically connected to the connecting piece.
5. The battery cover assembly structure according to any one of claims 1 to 4, characterized in that: The cross-sectional thickness of the adhesive tape (4) ranges from 25 μm to 150 μm.
6. The battery cover assembly structure according to any one of claims 1 to 4, characterized in that: The number of winding turns of the adhesive tape (4) is greater than or equal to 1.
7. The battery cover assembly structure according to any one of claims 1 to 4, characterized in that: The adhesive tape (4) is made of plastic material.
8. The battery cover assembly structure according to any one of claims 1 to 4, characterized in that: Along the orientation, a first accommodating groove (11) is recessed on the top surface of the cover body (1), and the second plastic part (3) is fixedly arranged in the first accommodating groove (11).
9. The battery cover assembly structure according to any one of claims 1 to 4, characterized in that: Along the orientation, the top surface of the second plastic part (3) is located below the top surface of the cover body (1), and the distance between the top surface of the second plastic part (3) and the top surface of the cover body (1) ranges from 0 mm to 0.5 mm; or, Along the orientation, the top surface of the second plastic part (3) is located above the top surface of the cover plate body (1), and the distance between the top surface of the second plastic part (3) and the top surface of the cover plate body (1) ranges from 0 mm to 1 mm.
10. A battery comprising a battery housing (6) and a pole group, characterized in that: It also includes the battery cover assembly structure according to any one of claims 1 to 9, wherein the cover body (1) is fixedly connected to the battery shell (6) to form a battery box structure, and the electrode group is arranged in the battery box structure.