Sealing cover structure and battery

Abstract

The utility model provides a sealing cover structure and a battery, relates to the technical field of batteries, and aims to solve the problem that an anti-explosion valve is damaged or opened in advance due to the fact that electrolyte accumulated in a cavity between an end plate and a lower plastic part of the battery impacts the anti-explosion valve of the battery when the battery shakes to a certain extent. The utility model provides a sealing cover structure which comprises an end plate, a lower plastic part, a shielding part and a connecting part. A through hole is formed in the end plate, the lower plastic part is connected with the end plate, a connecting part is formed on the lower plastic part, an alignment hole is formed in the position, corresponding to the connecting part, of the shielding part, and the connecting part penetrates through the alignment hole to be connected with the connecting part, so that the shielding part is connected with the lower plastic part; a shielding part is formed on the shielding piece, and the projection of the shielding part on the end plate at least partially covers the through hole.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a sealing cover structure and a battery. Background Art

[0002] When the blade battery cell cover explosion-proof valve is located at the bottom of the battery pack, a cavity is formed between the inner end plate of the battery cell and the explosion-proof valve. The electrolyte will accumulate in the cavity. When the battery is shaken, the electrolyte will shake back and forth, thereby continuously impacting the explosion-proof valve, causing damage to the explosion-proof valve, leakage of the battery cell, and premature opening of the explosion-proof valve, which will affect the battery life.

[0003] Therefore, there is an urgent need to provide a cover structure and a battery to solve the problems existing in the prior art to a certain extent. Utility Model Content

[0004] The utility model aims to provide a sealing structure and a battery, so as to solve to a certain extent the problem that the electrolyte accumulated in the cavity between the end plate and the lower plastic part of the battery impacts the battery explosion-proof valve when the battery shakes, causing the explosion-proof valve to be damaged or opened prematurely.

[0005] The utility model provides a sealing structure, including an end plate, a lower plastic part, a shielding part and a connecting part; a through hole is formed on the end plate, the lower plastic part is connected to the end plate, a connecting part is formed on the lower plastic part, an alignment hole is formed on the shielding part corresponding to the position of the connecting part, the connecting part passes through the alignment hole and is connected to the connecting part, so that the shielding part is connected to the lower plastic part; a shielding part is formed on the shielding part, and the projection of the shielding part on the end plate at least partially covers the through hole.

[0006] Wherein, the connecting member is a screw, the connecting portion is a blind hole, and a threaded portion is formed on the inner wall of the blind hole, and the connecting member is threadedly connected to the connecting portion.

[0007] Specifically, the lower plastic part is formed with a hollow portion, there are two hollow portions, and the hollow portions are arranged at intervals, a mounting portion is formed between the two hollow portions, and the connecting portion is formed on the mounting portion.

[0008] Furthermore, a groove is formed on the side of the lower plastic part away from the end plate and corresponding to the position of the hollow portion, and the hollow portion is located within the area of ​​the groove; the connecting portion protrudes from the side of the lower plastic part away from the end plate, and the protruding height of the connecting portion is not greater than the depth of the groove.

[0009] Furthermore, the shielding member also includes a docking portion, the alignment hole is formed on the docking portion, and the shape and size of the docking portion correspond to the mounting portion; the shielding portion is formed on both sides of the docking portion.

[0010] Further, there are multiple said shielding parts, and the multiple said shielding parts are arranged at intervals along the first direction of the docking part.

[0011] Wherein, the capping structure provided by the present utility model further includes an end cap and an explosion-proof valve. The explosion-proof valve is arranged on the end cap, and both the hollow part and the perforation are arranged corresponding to the explosion-proof valve.

[0012] Specifically, the shielding part is made of an epoxy resin board, a metal part or a plastic part.

[0013] Further, the connecting part is made of metal or a plastic part.

[0014] Compared with the prior art, the capping structure provided by the present utility model has the following advantages:

[0015] The capping structure provided by the present utility model includes an end plate, a lower plastic part, a shielding part and a connecting part; a perforation is formed on the end plate, the lower plastic part is connected to the end plate, the lower plastic part forms a connecting part, a positioning hole is formed at the position of the shielding part corresponding to the connecting part, and the connecting part passes through the positioning hole and is connected to the connecting part, so that the shielding part is connected to the lower plastic part; the shielding part forms a shielding portion, and the projection of the shielding portion on the end plate covers the perforation.

[0016] From this analysis, it can be seen that through the connecting part formed on the lower plastic part, a basis can be provided for the installation of the shielding part, and through the positioning hole formed at the position of the shielding part corresponding to the connecting part, the connecting part can pass through the positioning hole and be connected to the connecting part, so as to realize the connection between the shielding part and the lower plastic part. And because the shielding portion formed by the shielding part provided in this application is arranged corresponding to the perforation on the end plate, and the projection of the shielding portion on the end plate can cover the perforation, therefore, when the electrolyte passes through the perforation, the shielding portion can have a stable effect on the electrolyte, so as to avoid the problem that the electrolyte impacts the explosion-proof valve, causing damage and leakage of the explosion-proof valve or premature opening when the battery shakes, and improving the service life of the overall battery.

[0017] In addition, the present utility model also provides a battery, including the above-mentioned capping structure.

[0018] For the battery adopting the capping structure provided by this application, since the capping structure has a shielding part that can avoid the impact of the battery on the explosion-proof valve to a certain extent, therefore, the use stability and service life of the overall battery can be improved to a certain extent. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic exploded view of the capping structure provided by the embodiment of the present utility model from the first perspective;

[0021] Figure 2 It is a schematic exploded view of the capping structure provided by the embodiment of the present utility model from the second perspective.

[0022] In the figure: 1 - end plate; 101 - perforation; 2 - lower plastic part; 201 - connecting part; 202 - hollow part; 203 - groove; 204 - mounting part; 3 - shielding part; 301 - shielding portion; 302 - docking part; 3021 - alignment hole; 4 - connecting piece; 5 - end cover; 6 - explosion-proof valve. Specific embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application that is required to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0024] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0025] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the embodiments of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0028] For ease of description, spatial relationship terms such as "above...", "upper", "below...", and "lower" can be used herein to describe the relationship between one element and another as shown in the drawings. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0029] The terms used herein are only for describing various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprises", "comprising", and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0030] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

[0031] The features of the examples described herein can 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, as will be apparent after understanding the disclosure of the present application, other configurations are possible. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0032] As shown Figure 1 in the figure, the present utility model provides a capping structure, which includes an end plate 1, a lower plastic part 2, a shielding part 3 and a connecting part 4; a through hole 101 is formed on the end plate 1, the lower plastic part 2 is connected to the end plate 1, a connecting part 201 is formed on the lower plastic part 2, a positioning hole 3021 is formed at the position of the shielding part 3 corresponding to the connecting part 201, and the connecting part 4 passes through the positioning hole 3021 and is connected to the connecting part 201, so that the shielding part 3 is connected to the lower plastic part 2; a shielding part 301 is formed on the shielding part 3, and the projection of the shielding part 301 on the end plate 1 at least partially covers the through hole 101.

[0033] Compared with the prior art, the capping structure provided by the present utility model has the following advantages:

[0034] For the capping structure provided by the present utility model, the connecting part 201 formed on the lower plastic part 2 can provide a basis for the installation of the shielding part 3, and the positioning hole 3021 formed at the position of the shielding part 3 corresponding to the connecting part 201 enables the connecting part 4 to pass through the positioning hole 3021 and be connected to the connecting part 201, realizing the connection between the shielding part 3 and the lower plastic part 2. Since the shielding part 301 formed by the shielding part 3 provided in this application is arranged corresponding to the through hole 101 on the end plate 1, and the projection of the shielding part 301 on the end plate 1 can at least partially cover the through hole 101, when the electrolyte passes through the through hole 101, the shielding part 301 can have a stable effect on the electrolyte, thus avoiding the problem that the electrolyte impacts the explosion-proof valve 6 and causes damage, leakage or premature opening of the explosion-proof valve 6 when the battery shakes, and improving the service life of the overall battery.

[0035] Optionally, the connecting part 4 in this application is a screw, the connecting part 201 is a blind hole, and a threaded part is formed on the inner wall of the blind hole, and the connecting part 4 is threadedly connected to the connecting part 201.

[0036] Since the connecting part 4 in this application needs to press the shielding part 3 against the installation surface of the lower plastic part 2, by making the connecting part 201 a blind hole and forming a threaded part on the inner wall of the blind hole, on the one hand, it can achieve threaded connection corresponding to the screw to ensure the connection stability of the shielding part 3, and on the other hand, the blind hole can provide more contact area, thereby further improving the connection stability of the connecting part 4 and the shielding part 3.

[0037] Optionally, as Figure 1 shown in combination Figure 2 with the figure, the lower plastic part 2 in this application is formed with two hollow parts 202, which are arranged at intervals, an installation part 204 is formed between the two hollow parts 202, and the connecting part 201 is formed on the installation part 204.

[0038] The formed hollow portion 202 enables the passage of the electrolyte. Through the formed mounting portion 204, on the one hand, it can provide a basis for the formation of the connecting portion 201, thereby realizing the connection between the shielding member 3 and the lower plastic part 2. On the other hand, the mounting portion 204 can also ensure the structural strength of the lower plastic part 2 to a certain extent.

[0039] Optionally, as Figure 1 Combined with Figure 2 shown, on the side of the lower plastic part 2 of the present application facing away from the end plate 1 and corresponding to the position of the hollow portion 202, a groove 203 is formed, and the hollow portion 202 is located within the area of the groove 203; the connecting portion 201 protrudes from the side of the lower plastic part 2 facing away from the end plate 1, and the protruding height of the connecting portion 201 is not greater than the depth of the groove 203.

[0040] Since the connecting portion 201 in the present application protrudes from the side of the lower plastic part 2 facing away from the end plate 1, therefore, through the formed groove 203, it can be avoided that the protruding height exceeds the groove 203 and affects the connection between the end cover 5 and the lower plastic part 2.

[0041] Optionally, as Figure 1 Combined with Figure 2 shown, the shielding member 3 in the present application further includes a docking portion 302, a docking hole 3021 is formed on the docking portion 302, and the shape and size of the docking portion 302 correspond to those of the mounting portion 204; shielding portions 301 are formed on both sides of the docking portion 302.

[0042] In the present application, the above-mentioned shielding portions 301 are arranged on both sides of the docking portion 302, and the number of the shielding portions 301 on both sides can be the same or different. In the present application, the number of the shielding portions 301 on both sides of the docking portion 302 is the same and they are arranged in one-to-one correspondence, so as to evenly cover the through holes 101 formed on the end plate 1 and ensure the blocking of the electrolyte.

[0043] Correspondingly, the shielding portions 301 in the present application can be multiple, and the multiple shielding portions 301 are arranged at intervals along the first direction of the docking portion 302.

[0044] It can be understood that, as Figure 1 Combined with Figure 2 shown, the multiple through holes 101 in the present application are arranged in an array and form three rows. Therefore, there are six shielding portions 301 in the present application, which are evenly distributed on both sides of the docking portion 302 to realize the shielding of the through holes 101. Correspondingly, the first direction in the present application is the width direction of the lower plastic part 2.

[0045] As Figure 1 Combined with Figure 2As shown in the figure, the cover structure provided by the present utility model further includes an end cover 5 and an explosion-proof valve 6. The explosion-proof valve 6 is disposed on the end cover 5, and the hollowed-out portion 202 and the perforation 101 are both correspondingly disposed with respect to the explosion-proof valve 6.

[0046] Preferably, the shielding member 3 in this application is made of an epoxy resin board, a metal part or a plastic part, and the connecting member 4 is made of a metal or a plastic part.

[0047] In addition, the present utility model further provides a battery, including the above-mentioned cover structure.

[0048] For the battery adopting the cover structure provided by this application, since the cover structure has the shielding member 3 which can, to a certain extent, avoid the impact of the battery on the explosion-proof valve 6, therefore, it can, to a certain extent, improve the use stability and lifespan of the overall battery.

[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A capping structure, characterized in that: It includes an end plate, a lower plastic part, a shielding part and a connecting part; The end plate is formed with a through hole, the lower plastic part is connected to the end plate, the lower plastic part is formed with a connecting portion, the shielding member is formed with an alignment hole at a position corresponding to the connecting portion, the connecting member passes through the alignment hole and is connected to the connecting portion, so that the shielding member is connected to the lower plastic part; The shielding member is formed with a shielding portion, and a projection of the shielding portion on the end plate at least partially covers the through hole.

2. The cover structure according to claim 1, characterized in that: The connecting piece is a screw, the connecting portion is a blind hole, and a threaded portion is formed on the inner wall of the blind hole, and the connecting piece is threadedly connected to the connecting portion.

3. The cover structure according to claim 1, characterized in that: The lower plastic part is formed with a hollow part, there are two hollow parts, and the hollow parts are arranged at intervals, a mounting part is formed between the two hollow parts, and the connecting part is formed on the mounting part.

4. The sealing structure according to claim 3, characterized in that: A groove is formed on one side of the lower plastic part away from the end plate and corresponding to the position of the hollow portion, and the hollow portion is located in the area of ​​the groove; The connecting portion protrudes from a side of the lower plastic part away from the end plate, and a protruding height of the connecting portion is not greater than a depth of the groove.

5. The cover structure according to claim 3, characterized in that: The shielding member further comprises a docking portion, the alignment hole is formed on the docking portion, and the shape and size of the docking portion correspond to the mounting portion; The shielding portion is formed on both sides of the butting portion.

6. The cover structure according to claim 5, characterized in that: There are a plurality of shielding portions, and the plurality of shielding portions are arranged at intervals along the first direction of the docking portion.

7. The cover structure according to claim 3, characterized in that: It also includes an end cover and an explosion-proof valve, wherein the explosion-proof valve is arranged on the end cover, and the hollow portion and the perforation are both arranged corresponding to the explosion-proof valve.

8. The sealing structure according to claim 1, characterized in that: The shielding member is made of epoxy resin plate, metal member or plastic member.

9. The cover structure according to claim 1, characterized in that: The connecting piece is made of metal or plastic.

10. A battery, characterized in that: The invention comprises the covering structure according to any one of claims 1 to 9.

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