Battery cover combination structure and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cover combination structure and a battery. The battery cover combination structure comprises a cover plate body, a first plastic part, a second plastic part, a connecting sheet and a clamping part, the first plastic part and the second plastic part are located on the two sides of the cover plate body in the orientation direction respectively. The orientation is parallel to the thickness direction of the cover plate body. Any two adjacent parts of the cover plate body, the first plastic part and the second plastic part are clamped into a whole through the clamping parts. And / or the cover plate body, the first plastic part and the second plastic part are clamped into a whole through a clamping part. The connecting piece is fixedly arranged on the second plastic part. Tabs of the pole group can sequentially penetrate through the first plastic part, the cover plate body and the second plastic part along the direction and are electrically connected with the connecting sheet; and the connecting sheet is also used for being electrically connected with an external electric device. The battery cover combination structure is simple in structure, few in parts, high in assembly efficiency and capable of effectively increasing the internal space of the battery box structure.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery cover assembly structure and a battery. Background Technology

[0002] With the continuous development of the battery industry, batteries, due to their high energy density and other advantages, are widely used in vehicles, mobile electrical equipment, and other fields. A battery mainly consists of a battery box, a battery cover housed within the battery box, and electrode arrays housed inside the battery box. The battery cover serves both as a protective shell that works with the battery box to protect the electrode arrays and as an electrical connection between the electrode arrays and external electrical equipment. Therefore, the battery cover is a crucial component of the battery.

[0003] The battery cover mainly consists of a cover body, terminals, and connecting tabs. Currently, existing technologies typically involve terminals extending through the cover body along its thickness. One end of the terminal, located inside the protective housing, is electrically connected to the tabs of the electrode assembly via the connecting tabs. The other end of the terminal extends out of the protective housing for electrical connection to external electrical equipment. However, this arrangement occupies internal space, as does the placement of the connecting tabs within the protective housing. Furthermore, this design necessitates a thicker plastic layer on the end of the cover body near the electrode assembly, further reducing internal space. Additionally, the connection between the cover and the plastic layer via riveting results in a large number of components, high production costs, and low assembly efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a battery cover assembly structure and a battery to solve the aforementioned problems existing in the battery cover of the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[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 parallel to the thickness direction of the cover body. The battery cover assembly structure also includes a clamping member.

[0007] Any two adjacent parts of the cover plate body, the first plastic part, and the second plastic part are clamped together as a whole by the clamping member; and / or, the cover plate body, the first plastic part, and the second plastic part are clamped together as a whole by the clamping member;

[0008] The connecting piece is fixedly disposed on the second plastic part; the electrode tabs of the electrode group can pass through the first plastic part, the cover plate body and the second plastic part in sequence along the orientation and be electrically connected to the connecting piece, and the connecting piece is also used for electrical connection with external electrical components.

[0009] As a preferred embodiment of the above-mentioned battery cover assembly structure, the battery cover assembly structure includes two insertion holes, which penetrate the cover plate body, the first plastic part and the second plastic part along the orientation;

[0010] The clamping member includes a first clamping part and two second clamping parts connected to the first clamping part; the two insertion holes are provided in a one-to-one correspondence with the two second clamping parts, and the second clamping parts can pass through the insertion holes; the two second clamping parts are configured to be able to move closer to each other or further away from each other.

[0011] As a preferred embodiment of the above-mentioned battery cover assembly structure, the clamping member further includes two connecting portions, which are arranged one-to-one with the two second clamping portions; the connecting portions connect the first clamping portion and the second clamping portion, and the two connecting portions are configured to be able to move closer to or further away from each other.

[0012] As a preferred embodiment of the above-mentioned battery cover assembly structure, the first clamping part and the second clamping part are both distributed perpendicularly to the connecting part, and the first clamping part and the second clamping part are both distributed on the same side of the connecting part.

[0013] As a preferred embodiment of the above-mentioned battery cover assembly structure, the first clamping part, the two second clamping parts, and the two connecting parts of the clamping member are integrally formed.

[0014] As a preferred embodiment of the above-mentioned battery cover assembly structure, the thickness of the clamping member ranges from 0.1mm to 2mm.

[0015] As a preferred embodiment of the above-mentioned battery cover assembly structure, the clamping member is made of plastic material.

[0016] As a preferred embodiment of the above-mentioned battery cover assembly structure, the battery cover assembly structure further includes a first mounting hole, which passes through the first plastic part, the cover plate body and the second plastic part along the orientation, and the electrode tab can pass through the first mounting hole and be electrically connected to the connecting piece.

[0017] As a preferred embodiment of the above-mentioned battery cover assembly structure, the first plastic part is a plastic sheet; and / or,

[0018] The second plastic part is a plastic sheet.

[0019] The battery includes a battery casing and an electrode assembly, and also includes the aforementioned battery cover assembly structure. The cover body is fixedly connected to the battery casing to form a battery box structure, and the electrode assembly is disposed within the battery box structure.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a battery cover assembly structure, which includes a cover body, a first plastic part, a second plastic part, a connecting piece, and a clamping member. The first and second plastic parts are located on opposite sides of the cover body, with their orientation parallel to the thickness direction of the cover body. Any two adjacent parts of the cover body, the first plastic part, and the second plastic part are clamped together as a whole by the clamping member. Alternatively, the cover body, the first plastic part, and the second plastic part are clamped together as a whole by the clamping member. The connecting piece is fixedly disposed on the second plastic part. The electrode tabs of the electrode assembly can pass sequentially through the first plastic part, the cover body, and the second plastic part along the orientation and are electrically connected to the connecting piece. The connecting piece is also used for electrical connection to external electrical components.

[0022] This battery cover assembly structure features a cover body, a first plastic part, and a second plastic part, where any two adjacent parts are clamped together as a single unit using clamping components. Alternatively, the cover body, the first plastic part, and the second plastic part can be clamped together as a single unit using clamping components. The structure is simple, easy to operate, and effectively improves the production and assembly efficiency of the battery cover assembly structure.

[0023] Secondly, the electrode tabs of the electrode assembly are arranged to pass sequentially through the first plastic part, the cover plate body, and the second plastic part along a directional orientation and are electrically connected to the connecting piece. It is understood that the electrode assembly, the first plastic part, the cover plate body, and the second plastic part are distributed sequentially along a directional orientation, while the connecting piece and the second plastic part are both located on the outside of the battery box structure. This allows for electrical connection between the electrode assembly and external electrical components while effectively avoiding the problem of occupying internal space of the protective shell caused by placing the connecting piece inside the protective shell in the prior art. Furthermore, since the connecting piece is located on the outside of the battery box structure, the thickness of the first plastic part can be effectively reduced compared to the prior art, thereby effectively mitigating the problem of occupying internal space of the protective shell caused by the thicker plastic layer in the prior art.

[0024] Therefore, this battery cover assembly structure has fewer parts, higher assembly efficiency, and can effectively increase the internal space of the battery box structure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the battery structure provided in a specific embodiment of this utility model;

[0026] Figure 2 This is an exploded view of the battery cover assembly structure provided in a specific embodiment of this utility model;

[0027] Figure 3This is a top view of the battery cover assembly structure provided in a specific embodiment of this utility model;

[0028] Figure 4 This is a bottom view of the battery cover assembly structure provided in a specific embodiment of this utility model;

[0029] Figure 5 yes Figure 3 Sectional view along the middle AA;

[0030] Figure 6 yes Figure 3 Unsectioned view of the middle edge BB.

[0031] In the picture:

[0032] 1. Cover plate body; 11. First receiving groove; 12. Second mounting hole; 13. Limiting hole;

[0033] 2. First plastic part; 21. Connecting hole; 22. Limiting post;

[0034] 3. Second plastic part; 31. Annular positioning part; 32. Second receiving groove;

[0035] 4. Clamping component; 41. First clamping part; 42. Second clamping part; 43. Connecting part;

[0036] 5. Socket;

[0037] 6. Battery casing;

[0038] 7. Injection hole. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] like Figure 1-6 As shown, this 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 clamping member 4. The first plastic part 2 and the second plastic part 3 are respectively located on both sides of the cover body 1 along an orientation parallel to the thickness direction of the cover body 1. Any two adjacent parts of the cover body 1, the first plastic part 2, and the second plastic part 3 are clamped together as a whole by the clamping member 4. And / or, the cover body 1, the first plastic part 2, and the second plastic part 3 are clamped together as a whole by the clamping member 4. The connecting piece is fixedly disposed on the second plastic part 3. The electrode tabs of the electrode assembly can pass sequentially through the first plastic part 2, the cover body 1, and the second plastic part 3 along an orientation and are electrically connected to the connecting piece. The connecting piece is also used for electrical connection with external electrical components.

[0044] This battery cover assembly structure features a cover body 1, a first plastic part 2, and a second plastic part 3, where any two adjacent parts are clamped together by a clamping member 4. Alternatively, the cover body 1, the first plastic part 2, and the second plastic part 3 can be clamped together by the clamping member 4. The structure is simple, easy to operate, and effectively improves the production and assembly efficiency of the battery cover assembly structure.

[0045] Secondly, the electrode tabs of the electrode assembly are arranged to pass sequentially through the first plastic part 2, the cover plate body 1, and the second plastic part 3 along a directional orientation and are electrically connected to the connecting piece. It can be understood that the electrode assembly, the first plastic part 2, the cover plate body 1, and the second plastic part 3 are distributed sequentially along a directional orientation, while the connecting piece and the second plastic part 3 are both located on the outside of the battery box structure. This allows for electrical connection between the electrode assembly and external electrical components while effectively avoiding the problem of occupying internal space of the protective shell caused by placing the connecting piece inside the protective shell in the prior art. Furthermore, since the connecting piece is located on the outside of the battery box structure, the thickness of the first plastic part 2 can be effectively reduced compared to the prior art, thereby effectively mitigating the problem of occupying internal space of the protective shell caused by the thicker plastic layer in the prior art.

[0046] Therefore, this battery cover assembly structure has fewer parts, higher assembly efficiency, and can effectively increase the internal space of the battery box structure.

[0047] Specifically, in this embodiment, such as Figure 1-6 As shown, the cover body 1, the first plastic part 2, and the second plastic part 3 are directly clamped together as a whole by the same clamping member 4. This reduces the number of clamping members 4 and also reduces the weight of the battery cover assembly structure.

[0048] As an alternative, the cover plate body 1 and the first plastic part 2 are clamped together as a whole by a clamping member 4. The cover plate body 1 and the second plastic part 3 are then clamped together as a whole by another clamping member 4. This makes the cover plate body 1, the first plastic part 2 and the second plastic part 3 form an integral structure.

[0049] As an alternative, the cover body 1 and the first plastic part 2 are clamped together as a whole by a clamping member 4. The cover body 1 and the second plastic part 3 are then clamped together as a whole by another clamping member 4. Finally, the cover body 1, the first plastic part 2, and the second plastic part 3 are clamped together as a whole by another clamping member 4.

[0050] Specifically, a pole is fixedly installed on the connecting piece, and the pole is used for electrical connection with external electrical components.

[0051] Specifically, in this embodiment, the cover plate body 1 is exemplarily set as an aluminum plate. Aluminum plates have the characteristics of high strength, high rigidity, light weight and high temperature resistance.

[0052] Among them, such as Figure 1-6 As shown, the battery cover assembly includes two insertion holes 5, which oriented through the cover body 1, the first plastic part 2, and the second plastic part 3. The clamping member 4 includes a first clamping part 41 and two second clamping parts 42 connected to the first clamping part 41. The two insertion holes 5 and the two second clamping parts 42 are arranged in a one-to-one correspondence. The second clamping parts 42 can pass through the insertion holes 5. The two second clamping parts 42 are configured to be able to move closer to or further away from each other.

[0053] Specifically, such as Figure 1-6 As shown, taking the example of directly clamping the cover plate body 1, the first plastic part 2, and the second plastic part 3 into a whole using a clamping member 4. To clamp the cover plate body 1, the first plastic part 2, and the second plastic part 3 into a whole, firstly, the first plastic part 2, the cover plate body 1, and the second plastic part 3 are stacked sequentially along the orientation. Then, the two second clamping parts 42 are controlled to move away from each other and pass through the corresponding insertion holes 5 respectively. Then, the two second clamping parts 42 are controlled to move closer to each other and abut against the bottom surface of the second plastic part 3. This achieves the clamping of the cover plate body 1, the first plastic part 2, and the second plastic part 3 into a whole.

[0054] Specifically, such as Figure 2 As shown, the clamping member 4 also includes two connecting portions 43, which are correspondingly arranged with the two second clamping portions 42. The connecting portions 43 connect the first clamping portion 41 and the second clamping portion 42, so that both second clamping portions 42 are connected to the first clamping portion 41.

[0055] Preferably, the two connecting portions 43 are configured to be able to move closer to or further away from each other. Specifically, taking the case of directly clamping the cover body 1, the first plastic part 2, and the second plastic part 3 as a whole by a clamping member 4 as an example. To clamp the cover body 1, the first plastic part 2, and the second plastic part 3 as a whole, firstly, the first plastic part 2, the cover body 1, and the second plastic part 3 are stacked sequentially along the orientation, and then the two connecting portions 43 are controlled to move away from each other and / or the second clamping portions 42 are controlled to move away from each other, so that the two second clamping portions 42 pass through the corresponding insertion holes 5 respectively, and then the two second clamping portions 42 are controlled to move closer to each other and both abut against the bottom surface of the second plastic part 3.

[0056] Preferably, such as Figure 2 As shown, the first clamping part 41 and the second clamping part 42 are both distributed perpendicularly to the connecting part 43, and both the first clamping part 41 and the second clamping part 42 are located on the same side of the connecting part 43. This is to minimize the volume of the clamping member 4 while ensuring its clamping function.

[0057] Preferably, the first clamping portion 41, the two second clamping portions 42, and the two connecting portions 43 of the clamping member 4 are integrally formed. This allows for a further reduction in the number of parts and facilitates assembly. Further, the clamping member 4 is a part of uniform thickness. Alternatively, at least some of the first clamping portion 41, the two second clamping portions 42, and the two connecting portions 43 have unequal thicknesses.

[0058] It is understandable that applying an external force to the two connecting parts 43 can cause the two connecting parts 43 to move closer or further apart. Applying an external force to the two second clamping parts 42 can also cause the two connecting parts 43 to move closer or further apart.

[0059] Preferably, the clamping member 4 is made of plastic material, giving it a certain degree of elastic deformation capability. The plastic material can be epoxy resin, polyethylene, polypropylene, or polyethylene terephthalate, etc.

[0060] Understandably, when an external force is applied to move the two connecting parts 43 away from each other, the connection between the first clamping part 41 and the connecting part 43 undergoes elastic deformation. After the external force is removed, the elastic restoring force at the connection between the first clamping part 41 and the connecting part 43 can drive the two connecting parts 43 closer together. When an external force is applied to move the two second clamping parts 42 away from each other, the connection between the second clamping part 42 and the connecting part 43 undergoes elastic deformation. After the external force is removed, the elastic restoring force at the connection between the second clamping part 42 and the connecting part 43 can drive the two second clamping parts 42 closer together.

[0061] As an alternative, the clamping member 4 can also be made of bent metal sheet. Metal materials include, for example, aluminum or alloy materials. To clamp the cover plate body 1, the first plastic part 2, and the second plastic part 3 as a whole, the clamping member 4 is first bent to form a first clamping part 41 and two assembly parts. After the two assembly parts are respectively inserted into the corresponding insertion holes 5, the assembly parts are bent to form a connecting part 43 and a second clamping part 42, so that both second clamping parts 42 abut against the bottom surface of the second plastic part 3. It is understood that the assembly part includes the connecting part 43 and the second clamping part 42. Further, it is preferable that the outer periphery of the clamping member 4, formed by bending metal sheet, is coated with an insulating layer.

[0062] Preferably, the thickness of the clamping member 4 is in the range of 0.1mm-2mm. This allows the clamping member 4, made of plastic material, to undergo effective elastic deformation. For the clamping member 4 made of bent metal sheet, this allows it to be bent.

[0063] The battery cover assembly structure also includes a first mounting hole, which oriented through the first plastic part 2, the cover plate body 1, and the second plastic part 3. The electrode tab can pass through the first mounting hole and be electrically connected to the connecting piece. This allows the electrode tab to sequentially pass through the first plastic part 2, the cover plate body 1, and the second plastic part 3 along the oriented path and be electrically connected to the connecting piece.

[0064] Preferably, in this embodiment, such as Figure 1 and Figure 3-6 As shown, the first mounting hole is the insertion hole 5. That is, each second plastic part 3 corresponds to two first mounting holes.

[0065] As an alternative, the first mounting hole is independent of the two sockets 5.

[0066] As an alternative, when there are multiple first mounting holes, one or two of the multiple first mounting holes are sockets 5, and the remaining two sockets 5 are independent of each other.

[0067] Preferably, the first plastic part 2 is a plastic sheet. The second plastic part 3 is a plastic sheet. This facilitates the processing of the first plastic part 2 and the second plastic part 3, effectively increasing the contact area between the first plastic part 2 and the cover plate body 1, and also effectively increasing the contact area between the second plastic part 3 and the cover plate body 1.

[0068] More preferably, the first plastic part 2 is a one-piece molded plastic sheet. The second plastic part 3 is a one-piece molded plastic sheet. This reduces the number of parts.

[0069] Preferably, the connecting piece is fixedly disposed on the top surface of the second plastic part 3 along the orientation. This facilitates the fixing of the electrode post on the connecting piece and the electrical connection of the electrode post to external electrical components. Specifically, in this embodiment, the connecting piece is located above the clamping member 4.

[0070] Optionally, along orientation, such as Figure 1-6 As shown, a first receiving groove 11 is recessed on the top surface of the cover plate body 1, and a second plastic part 3 is fixedly disposed in the first receiving groove 11. This improves the volume utilization rate of the cover plate body 1.

[0071] Specifically, along the orientation, setting the thickness of the second plastic part 3 too large will increase the weight of the battery cover assembly structure and is detrimental to its strength. Setting the thickness of the second plastic part 3 too small will hinder the construction of the first receiving groove 11 and reduce the volume utilization rate of the cover body 1. Therefore, in this embodiment, as... Figure 5 As shown, along the orientation, the top surface of the second plastic part 3 is positioned below the top surface of the cover plate body 1, and the distance L1 between the top surface of the second plastic part 3 and the top surface of the cover plate body 1 is 0mm to 0.5mm. As an alternative, along the orientation, the top surface of the second plastic part 3 is positioned 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 is 0mm to 1mm.

[0072] Preferably, such as Figure 1-3 , Figure 5 and Figure 6 As shown, the top surface of the second plastic part 3 has a protruding annular positioning part 31, and a second receiving groove 32 is formed between the annular positioning part 31 and the top surface of the second plastic part 3. The connecting piece is located in the second receiving groove 32 to limit the setting position of the connecting piece.

[0073] Preferably, in this embodiment, such as Figure 1 and Figure 3-6 As shown, the first mounting hole also extends through the annular positioning part 31 along its orientation. That is, the first mounting hole extends through the first plastic part 2, the cover plate body 1, the second plastic part 3, and the annular positioning part 31 along its orientation. This facilitates the electrical connection between the electrode tab and the connecting piece in the second receiving groove 32. Specifically, after the electrode tab extends out of the first mounting hole, it is folded over and electrically connected to the connecting piece in the second receiving groove 32.

[0074] More preferably, in this embodiment, the inner peripheral wall of the second receiving groove 32 is provided with two openings, which correspond one-to-one with and communicate with the two first mounting holes. This arrangement allows the first clamping part 41 to fit against the inner bottom wall of the second receiving groove 32, thereby further reducing the volume of the clamping member 4 and further improving the reliability of clamping the first plastic part 2, the cover plate body 1, and the second plastic part 3 by the clamping member 4.

[0075] More preferably, the annular positioning part 31 is integrally formed on the second plastic part 3, in order to further reduce the number of parts.

[0076] Specifically, an excessively large gap between the outer peripheral wall of the annular positioning part 31 and the outer peripheral wall of the second plastic part 3 will increase the weight of the battery cover assembly structure and weaken its strength. Therefore, in this embodiment, if... Figure 6 As shown, the distance L2 between the outer peripheral wall of the annular positioning part 31 and the outer peripheral wall of the second plastic part 3 is set to be 0mm to 10mm.

[0077] Optionally, such as Figure 2 As shown, one of the cover plate body 1 and the first plastic part 2 is provided with a limiting post 22, and the other is provided with a limiting hole 13. The limiting post 22 is inserted into the limiting hole 13 along the orientation, so as to limit the relative position of the cover plate body 1 and the first plastic part 2. Furthermore, the cover plate body 1 and the second plastic part 3 can also be positioned in this way to determine their relative position; the specific structure will not be described in detail here.

[0078] Preferably, in this embodiment, such as Figure 1-6 As shown, the first mounting hole also extends through the limiting post 22 along the orientation. The limiting hole 13 includes a portion of the first mounting hole. This improves processing efficiency. Specifically, the first mounting hole extends through the first plastic part 2, the limiting post 22, the cover plate body 1, the second plastic part 3, and the annular positioning part 31 along the orientation. This facilitates the electrical connection between the electrode tab and the connecting piece in the second receiving groove 32.

[0079] Specifically, the electrode extends out of the first mounting hole, folds over, and is electrically connected to the connecting piece in the second receiving groove 32.

[0080] Specifically, in this embodiment, such as Figure 1-3 As shown, there are two second plastic parts 3, two connecting pieces, and two electrode tabs. The two second plastic parts 3, the two connecting pieces, and the two electrode tabs are all arranged in a one-to-one correspondence. Specifically, one of the two electrode tabs is the positive electrode tab, and the other electrode tab is the negative electrode tab.

[0081] In this embodiment, each second plastic part 3 corresponds to two first mounting holes. 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 configured in a one-to-one correspondence with the two first mounting holes corresponding to one of the second plastic parts 3. The two negative electrode tab portions are configured in a one-to-one correspondence with the two first mounting holes corresponding to the other second plastic part 3.

[0082] In this embodiment, for each second plastic part 3, the second receiving groove 32 is located between the two first mounting holes.

[0083] Among them, such as Figure 1 , Figure 3 and Figure 4 As shown, the battery cover assembly structure also includes a liquid injection hole 7, which penetrates the cover body 1 and the first plastic part 2. In this embodiment, the liquid injection hole 7 is exemplaryly located between two second plastic parts 3.

[0084] Among them, such as Figure 1-4 As shown, the cover plate body 1 is also provided with a second mounting hole 12, which is used to install the explosion-proof valve. Specifically, the first plastic part 2 is also provided with a connecting hole 21, which connects to the second mounting hole 12 and is used to communicate with the interior of the battery box structure. The specific structure of the explosion-proof valve is prior art and will not be described in detail here.

[0085] like Figure 1 As shown, this utility model also provides a battery, including a battery housing 6 and an electrode assembly, and also includes the aforementioned battery cover assembly structure. The cover body 1 is fixedly connected to the battery housing 6 to form a battery box structure, and the electrode assembly is disposed inside the battery box structure.

[0086] By adopting the above-mentioned battery cover assembly structure, the number of parts is reduced and the assembly efficiency is improved. Secondly, it can effectively increase the internal space of the battery box structure, so that the volume of the electrode assembly can be increased accordingly, thereby effectively improving the working performance of the battery.

[0087] The specific structures of the battery casing 6 and the electrode assembly are existing technologies and will not be described in detail here.

[0088] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

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 body (1) along the orientation; the orientation is parallel to the thickness direction of the cover body (1); the battery cover assembly structure also includes a clamping member (4); Any two adjacent parts of the cover plate body (1), the first plastic part (2) and the second plastic part (3) are clamped together as a whole by the clamping member (4); and / or, the cover plate body (1), the first plastic part (2) and the second plastic part (3) are clamped together as a whole by the clamping member (4); The connecting piece is fixedly disposed on the second plastic part (3); the electrode tab of the electrode group can pass through the first plastic part (2), the cover plate 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 be electrically connected to external electrical components.

2. The battery cover assembly structure according to claim 1, characterized in that, The battery cover assembly structure includes two insertion holes (5), which penetrate the cover body (1), the first plastic part (2) and the second plastic part (3) along the orientation; The clamping member (4) includes a first clamping part (41) and two second clamping parts (42) connected to the first clamping part (41); the two insertion holes (5) are provided one-to-one with the two second clamping parts (42), and the second clamping parts (42) can pass through the insertion holes (5); the two second clamping parts (42) are configured to be able to approach or move away from each other.

3. The battery cover assembly structure according to claim 2, characterized in that, The clamping member (4) further includes two connecting parts (43), which are provided one-to-one with the two second clamping parts (42); the connecting parts (43) connect the first clamping part (41) and the second clamping part (42), and the two connecting parts (43) are configured to be able to move closer to or further away from each other.

4. The battery cover assembly structure according to claim 3, characterized in that, The first clamping part (41) and the second clamping part (42) are both distributed perpendicularly to the connecting part (43), and the first clamping part (41) and the second clamping part (42) are both distributed on the same side of the connecting part (43).

5. The battery cover assembly structure according to claim 3, characterized in that, The first clamping part (41), the two second clamping parts (42), and the two connecting parts (43) of the clamping member (4) are integrally formed.

6. The battery cover assembly structure according to any one of claims 1-5, characterized in that, The thickness of the clamping member (4) ranges from 0.1mm to 2mm.

7. The battery cover assembly structure according to any one of claims 1-5, characterized in that, The clamping element (4) is made of plastic material.

8. The battery cover assembly structure according to any one of claims 1-5, characterized in that, The battery cover assembly structure also includes a first mounting hole, which passes through the first plastic part (2), the cover plate body (1) and the second plastic part (3) along the orientation, and the electrode tab can pass through the first mounting hole and be electrically connected to the connecting piece.

9. The battery cover assembly structure according to any one of claims 1-5, characterized in that: The first plastic part (2) is a plastic sheet; and / or, The second plastic part (3) is a plastic sheet.

10. A battery, comprising a battery casing (6) and an electrode assembly, characterized in that, It also includes the battery cover assembly structure according to any one of claims 1-9, wherein the cover body (1) is fixedly connected to the battery housing (6) to form a battery box structure, and the electrode assembly is disposed within the battery box structure.

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