Cover plate mechanism and battery

Abstract

The invention relates to a cover plate mechanism and a battery. The cover plate mechanism comprises a cover plate body; the insulating part comprises an insulating main body and a positioning part, the insulating main body is arranged on one side of the cover plate body, and the positioning part is arranged on one side, far away from the cover plate body, of the insulating main body; and the switching piece is arranged on the side, away from the cover plate body, of the insulating piece, and the positioning piece is used for positioning the switching piece. According to the technical scheme provided by the invention, the positioning piece can realize the positioning of the welding position of the switching piece, and the deviation of the positioning of the switching piece on the insulating piece is avoided, so that the relative position between the switching piece and the tab can be ensured, and when the tab and the switching piece are welded, the switching piece can be prevented from being too close to or far away from the tab, and the welding quality of the tab is improved. Therefore, the welding effect of the tab and the adapter plate can be ensured, and the welding reliability of the tab and the adapter plate is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to cover plate mechanisms and batteries. Background Technology

[0002] A battery typically includes a cover plate mechanism, a housing, and a battery cell. The battery cell is housed inside the housing. The cover plate mechanism is fixedly connected to the housing to seal the battery cell. The cover plate mechanism includes a cover plate body, an insulating component, and an adapter plate. The insulating component is fixed to the cover plate body, and the adapter plate is located on the side of the insulating component facing the battery cell and is welded and fixed to the battery cell's tabs.

[0003] In related technologies, when the adapter piece is connected to the insulating component, the positioning of the adapter piece on the insulating component is prone to deviation, which causes the relative position between the adapter piece and the electrode to be misaligned. This results in the adapter piece being too close to or too far from the electrode, affecting the welding effect between the electrode and the adapter piece, and thus reducing the reliability of the welding between the electrode and the adapter piece. Summary of the Invention

[0004] Therefore, it is necessary to provide a cover plate mechanism and battery to address the problem that the positioning of the adapter piece on the cover plate assembly is prone to deviation.

[0005] A cover plate mechanism, the cover plate mechanism comprising:

[0006] Cover plate body;

[0007] An insulating component includes an insulating body and a positioning component. The insulating body is disposed on one side of the cover plate body, and the positioning component is disposed on the side of the insulating body away from the cover plate body.

[0008] The adapter piece is located on the side of the insulating component away from the cover plate body, and the positioning component is used to position the adapter piece.

[0009] In one embodiment, the positioning element is configured to define the position of the adapter piece along a first direction.

[0010] In one embodiment, the adapter abuts against the positioning member along a first direction.

[0011] In one embodiment, the positioning member includes a positioning groove, and the adapter piece is located within the positioning groove. The positioning groove includes a first sidewall and a second sidewall spaced apart along a first direction. The first sidewall abuts against one side of the adapter piece, and the second sidewall abuts against the other side of the adapter piece.

[0012] In one embodiment, the positioning member includes a first positioning part and a second positioning part, which are spaced apart along a first direction. A positioning groove is formed between the first positioning part and the second positioning part. The first positioning part includes a first sidewall, and the second positioning part includes a second sidewall.

[0013] In one embodiment, the insulating element further includes:

[0014] The limiting component is located on the side of the insulating body away from the cover plate body. The limiting component is used to limit the electrode tab to restrict the relative movement between the electrode tab and the adapter plate.

[0015] In one embodiment, the limiting member is movably disposed on the insulating body;

[0016] Insulating components also include:

[0017] A locking element is placed between the positioning element and the limiting element, and the locking element is used to lock the limiting element.

[0018] In one embodiment, the locking element is configured as a snap-fit ​​structure.

[0019] In one embodiment, the locking element includes:

[0020] A fixing hole is provided on the limiting component;

[0021] The connector is mounted on the positioning component;

[0022] When the connector is inserted into the fixing hole, the positioning part and the limiting part engage.

[0023] A battery comprising the cover mechanism described above.

[0024] In the aforementioned cover plate mechanism, the insulating body of the insulating component is mounted on the cover plate body, and the positioning component is mounted on the insulating body, which also limits the position of the adapter piece. This configuration allows the positioning component to accurately position the adapter piece for welding, preventing deviations in its positioning on the insulating component. This ensures the relative position between the adapter piece and the electrode tab, preventing the adapter piece from getting too close or too far from the electrode tab during welding, thus guaranteeing the welding effect and improving the reliability of the welding. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the cover plate mechanism provided in one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of the positioning member, limiting member and adapter piece provided in an embodiment of this application;

[0027] Figure 3 A schematic diagram of the structure of the positioning member and the limiting member cooperating according to an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the structure of a locking member provided in an embodiment of this application;

[0029] Figure 5 A schematic diagram of the structure of the limiting member and the electrode tab provided in an embodiment of this application;

[0030] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0031] Figure 7 This is a schematic diagram of the structure of the cover plate mechanism and the battery cell provided in an embodiment of this application;

[0032] Figure 8 for Figure 7 A magnified view of a section at point B in the middle;

[0033] Figure 9 This is a schematic diagram of the structure of a battery provided in another embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Cover plate mechanism;

[0036] 110. Cover plate body; 111. Pole post;

[0037] 120. Insulating components;

[0038] 121. Insulating body;

[0039] 122. Positioning component; 1221. Positioning groove; 1222. First positioning part; 12221. Clearance groove; 1223. Second positioning part;

[0040] 123. Limiting component; 1231. Fixing part; 1232. Flipping part;

[0041] 124. Locking element; 1241. Fixing hole; 1242. Connecting element; 12421. Connecting plate; 12422. Snap-fit ​​protrusion;

[0042] 130. Adapter plate;

[0043] 200. Battery cell; 210. Electrode tab;

[0044] 300. Shell. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] See Figure 1 and Figure 2 One embodiment of this application provides a cover plate mechanism, which includes a cover plate body 110, an insulating member 120, and an adapter piece 130. The insulating member 120 includes an insulating body 121 and a positioning member 122. The insulating body 121 is disposed on one side of the cover plate body 110, and the positioning member 122 is disposed on the side of the insulating body 121 away from the cover plate body 110. The adapter piece 130 is disposed on the side of the insulating member 120 away from the cover plate body 110, and the positioning member 122 is used to position the adapter piece 130.

[0052] Applying the technical solution of this application, the insulating body 121 of the insulating component 120 is disposed on the cover plate body 110, and the positioning component 122 is disposed on the insulating body 121, and the positioning component 122 can limit the position of the adapter piece 130. With this configuration, the positioning component 122 can position the welding position of the adapter piece 130, avoiding deviation in the positioning of the adapter piece 130 on the insulating component 120, thereby ensuring the relative position between the adapter piece 130 and the tab 210. During welding of the tab 210 and the adapter piece 130, the adapter piece 130 can be prevented from being too close to or too far from the tab 210, thus ensuring the welding effect of the tab 210 and the adapter piece 130 and improving the reliability of the welding between the tab 210 and the adapter piece 130.

[0053] In related technologies, if the adapter piece 130 is too close to the tab 210, a redundant section of the tab 210 may not be able to be welded to it. During subsequent assembly, this redundant section is very likely to come into contact with the electrode, causing an inverted insertion phenomenon, posing a safety risk and threatening battery safety. If the adapter piece 130 is too far away from the tab 210, in order to ensure an effective welding area, the tab 210 usually needs to be excessively stretched towards the adapter piece 130. This can easily cause the tab 210 to tear, thereby increasing the resistance of the tab 210 and limiting the battery's overcurrent capacity.

[0054] However, in this application, the adapter piece 130 is fixed in a designated position, ensuring a suitable distance between the adapter piece 130 and the tab 210. This design prevents redundant segments from forming on the tab 210 due to the adapter piece 130 being too close, thus preventing these redundant segments from contacting the electrode in subsequent processes and preventing short circuits caused by the tab 210 being inserted incorrectly, thereby improving battery reliability. Simultaneously, there is no need to excessively stretch the tab 210 due to the adapter piece 130 being too far away; the tab 210 can be welded to the adapter piece 130 in its natural state, preventing tearing of the tab 210 and maintaining a stable current carrying capacity, further enhancing battery reliability.

[0055] See Figure 1 The X direction is the first direction, and the Y direction is the length direction of the cover body 110. In some embodiments, the first direction is the width direction of the cover body 110.

[0056] In related technologies, the cover plate body 110 is usually provided with a tab 210 along the side of the first direction. The tab 210 is welded and fixed to the corresponding side of the adapter piece 130. In the cover plate mechanism of related technologies, it is impossible to guarantee the centering of the adapter piece 130 on the cover plate body 110 along the first direction, that is, the adapter piece 130 will be set close to or far away from the tab 210.

[0057] See Figure 1 The positioning element 122 is configured to limit the position of the adapter piece 130 along the first direction. At the same time, by limiting the displacement of the adapter piece 130 along the first direction, the problems of the adapter piece 130 being too far away from the electrode 210 or too close to the electrode 210 can be solved, simplifying the structure of the positioning element 122 and making it easier to process the positioning element 122.

[0058] The adapter piece 130 abuts against the positioning member 122 along the first direction. This arrangement allows the positioning member 122 to position the adapter piece 130 through abutment and limiting, ensuring effective positioning. Simultaneously, the positioning member 122 provides clear physical feedback; when an operator places the adapter piece 130, it contacts the positioning member 122 along the first direction, allowing for an immediate and clear change in resistance. This reduces the operator's workload and improves positioning accuracy.

[0059] See Figure 1The positioning component 122 includes a positioning groove 1221, within which the adapter piece 130 is confined. The positioning groove 1221 includes a first sidewall and a second sidewall spaced apart along a first direction. The first sidewall abuts against one side of the adapter piece 130, and the second sidewall abuts against the other side of the adapter piece 130. This arrangement ensures the positioning of the adapter piece 130 by means of the positioning groove 1221, preventing positioning deviation of the adapter piece 130 on the insulating component 120. Furthermore, it facilitates assembly of the adapter piece 130 by workers, allowing them to quickly and accurately place the adapter piece 130 into the predetermined position.

[0060] See Figure 2 The positioning component 122 includes a first positioning part 1222 and a second positioning part 1223, which are spaced apart along a first direction. A positioning groove 1221 is formed between the first positioning part 1222 and the second positioning part 1223. The first positioning part 1222 includes a first sidewall, and the second positioning part 1223 includes a second sidewall. This arrangement allows the first positioning part 1222 and the second positioning part 1223 to shield the adapter piece 130, facilitating the limiting of the adapter piece 130 and ensuring the centering of the adapter piece 130 along the first direction during welding. Furthermore, the positioning component 122 has a simple structure, facilitating the processing of the first positioning part 1222 and the second positioning part 1223.

[0061] See Figure 1 The Y direction is the length direction of the first positioning part 1222 and the second positioning part 1223.

[0062] See Figure 2 The first positioning part 1222 and / or the second positioning part 1223 are in surface contact with the adapter piece 130, and the length direction of the first positioning part 1222 and / or the second positioning part 1223 is perpendicular to the first direction. This arrangement makes the structure of the positioning groove 1221 compatible with the structure of the adapter piece 130, increases the contact area between the first positioning part 1222 and / or the second positioning part 1223 and the adapter piece 130, ensures the stability of the adapter piece 130 within the positioning groove 1221, and further prevents the adapter piece 130 from shifting during the welding process.

[0063] In some embodiments, the length direction of the first positioning part 1222 and / or the second positioning part 1223 is the length direction of the cover plate body 110.

[0064] In some embodiments, both the first positioning part 1222 and the second positioning part 1223 are in contact with the surface of the adapter piece 130.

[0065] In some embodiments, the first positioning part 1222 and / or the second positioning part 1223 are plate-shaped structures.

[0066] During battery manufacturing, the tab 210 is in a bent state. The relevant technology cannot ensure the specific position of the tab 210 in the battery. During welding or battery assembly, the free end of the tab 210 may move. This may cause the tab 210 to be stretched after welding or assembly, or the tab 210 to have redundant sections, resulting in the problem of the tab 210 being inserted backwards, thus causing safety risks.

[0067] See Figures 3 to 5 The insulating component 120 also includes a limiting component 123, which is disposed on the side of the insulating body 121 away from the cover plate body 110. The limiting component 123 is used to limit the tab 210 to restrict the relative movement between the tab 210 and the adapter piece 130. With this configuration, the limiting component 123 can fix the position of the tab 210, preventing the free end of the tab 210 from moving during welding or battery assembly, thereby further reducing the occurrence of tab 210 tearing or inverted insertion, ensuring normal battery use.

[0068] See Figure 4 The limiting member 123 is movably disposed on the insulating body 121. The insulating member 120 also includes a locking member 124, which is disposed between the positioning member 122 and the limiting member 123, and is used to lock the limiting member 123. With the above structure, when the locking member 124 is not locking the limiting member 123, the limiting member 123 is in the open state, and the operator can place the electrode tab 210 between the insulating body 121 and the limiting member 123, and then lock the limiting member 123 by the locking member 124, at which point the limiting member 123 is in the closed state, and the limiting member 123 can fix the electrode tab 210 between the insulating body 121 and the limiting member 123. This arrangement can ensure the fixing effect of the limiting member 123 on the electrode tab 210, thereby further preventing the free end of the electrode tab 210 from moving.

[0069] In some embodiments, the locking member 124 is disposed between the insulating body 121 and the limiting member 123.

[0070] In related technologies, the tab 210 may be bent or piled up, and the surface of the tab 210 may be uneven, which may affect the welding effect between the tab 210 and the adapter piece 130.

[0071] In some embodiments, the limiting member 123 adopts a plate-like structure. The limiting member 123 is in contact with the surface of the electrode tab 210, which can shape the shape of the electrode tab 210, ensure the flatness of the electrode tab 210, and thus ensure the welding effect between the electrode tab 210 and the adapter piece 130.

[0072] In related technologies, in order to avoid short circuits caused by the tabs 210 coming into contact with each other after being folded, it is necessary to use additional tape to stick them to the tabs 210, which will increase production costs and labor costs for workers.

[0073] However, in this application, the limiting member 123 can effectively isolate the folded tab 210 without the need for tape, reducing the cost of equipment and raw materials, and also reducing the labor cost of workers. Workers only need to fold the limiting member 123.

[0074] See Figure 4 and Figure 6 The locking element 124 is constructed with a snap-fit ​​structure. This design facilitates the connection between the positioning element 122 and the limiting element 123, while also making it easier for operators to perform the operation and reducing the difficulty of locking the limiting element 123.

[0075] See Figure 6 The locking element 124 includes a fixing hole 1241 and a connecting element 1242. The fixing hole 1241 is disposed on the limiting element 123. The connecting element 1242 is disposed on the positioning element 122. When the connecting element 1242 passes through the fixing hole 1241, the limiting element 123 and the connecting element 1242 are engaged. With this configuration, after the connecting element 1242 passes through the fixing hole 1241, it can limit the limiting element 123, thereby effectively restricting the rotation of the limiting element 123 in its opening direction and locking the limiting element 123. Furthermore, with the above structure, the locking element 124 has a simple structure and is easy to process for the limiting element 123 and the connecting element 1242.

[0076] See Figure 6 The connector 1242 includes a connecting plate 12421 and a snap-fit ​​protrusion 12422. The connecting plate 12421 is disposed on the positioning member 122 and is used to pass through the fixing hole 1241. The snap-fit ​​protrusion 12422 is disposed on the connecting plate 12421. When the limiting member 123 is snapped into place with the connector 1242, the snap-fit ​​protrusion 12422 abuts against the side of the limiting member 123 away from the insulating body 121 to limit the swing of the limiting member 123. With this arrangement, the snap-fit ​​protrusion 12422 abuts against the side of the limiting member 123 away from the insulating body 121, so the snap-fit ​​protrusion 12422 can resist the force that causes the limiting member 123 to disengage from the fixing hole 1241 due to vibration or other reasons, thus improving the reliability of locking.

[0077] In some embodiments, the cross-sectional area of ​​the snap-fit ​​protrusion 12422 along the flipping direction of the limiting member 123 gradually increases in the direction close to the insulating body 121. This arrangement facilitates the connection between the connector 1242 and the fixing hole 1241.

[0078] In some embodiments, the snap-fit ​​protrusion 12422 has a conical structure. Furthermore, after the locking member 124 and the limiting member 123 are engaged, the limiting member 123 will not normally be opened. In special circumstances, if it is necessary to open the limiting member 123, since the insulating member 120 is made of an elastic material, the operator can apply force to open the limiting member 123.

[0079] In some embodiments, the locking member 124 is disposed on the positioning member 122. With this configuration, the locking member 124 is integrated into the positioning member 122, which can restrict the movement path of the limiting member 123, thereby avoiding interference between the limiting member 123 and other structures, improving the overall compactness of the insulating member 120, and simplifying the steps in the assembly process.

[0080] In some embodiments, the connecting plate 12421 is disposed on the first positioning part 1222, and the first positioning part 1222 is provided with an avoidance groove 12221 to avoid the limiting member 123, so that the limiting member 123 can be rotated normally and to avoid interference between the limiting member 123 and the first positioning part 1222.

[0081] The connection between the limiting member 123 and the insulating body 121 is located on one side of the positioning member 122 along the first direction, and the swing axis of the limiting member 123 extends along the length of the cover plate body 110. With this configuration, the limiting member 123 can cover the free end of the tab 210 during swinging, and can gradually press the tab 210 along the first direction. This smooths out any unevenness or slight bending of the tab 210 and makes it fit snugly against the surface of the limiting member 123, thus shaping the tab 210. Furthermore, this structure reduces the size of the limiting member 123; its dimension perpendicular to the first direction is the same as that of the tab 210, thereby reducing material usage. Also, the limiting member 123 only needs to be positioned corresponding to the tab 210 and does not need to cover other areas of the insulating body 121, avoiding interference between the limiting member 123 and other structures.

[0082] In some embodiments, the connection between the limiting member 123 and the insulating body 121 is located on the side of the first positioning portion 1222 away from the second positioning portion 1223. The snap-fit ​​protrusion 12422 is provided on the side of the connecting plate 12421 away from the first positioning portion 1222.

[0083] In some embodiments, the tab 210 is located between the second positioning part 1223 and the limiting member 123, and the second positioning part 1223 and the limiting member 123 cooperate to clamp the tab 210.

[0084] In some embodiments, the limiting member 123 includes a fixing part 1231 and a flipping part 1232. The fixing part 1231 is connected to the insulating body 121, and the flipping part 1232 flips to contact the electrode tab 210 surface. The dimension of the fixing part 1231 along the length of the cover plate body 110 is smaller than the dimension of the flipping part 1232 along the length of the cover plate body 110. This arrangement facilitates bending and flipping the flipping part 1232.

[0085] See Figures 7 to 9 Another embodiment of this application provides a battery, which includes the cover plate mechanism 100 provided above. With this configuration, the cover plate mechanism 100 provided above can ensure that the adapter piece 130 is located in a set position, and at the same time can prevent the free end of the electrode 210 from being displaced during welding or assembly, thereby ensuring the welding effect between the electrode 210 and the adapter piece 130.

[0086] In some embodiments, a pole post 111 is provided on the cover plate body 110, and the pole post 111 is electrically connected to the adapter piece 130.

[0087] In some embodiments, the battery further includes a cell 200 and a housing 300, the cell 200 being disposed within the housing 300, the cover mechanism 100 being fixed to the housing 300, and the cell 200 having tabs 210.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cover plate mechanism, characterized in that, The cover plate mechanism includes: Cover plate body (110); An insulating component (120) includes an insulating body (121) and a positioning component (122). The insulating body (121) is disposed on one side of the cover plate body (110), and the positioning component (122) is disposed on the side of the insulating body (121) away from the cover plate body (110). The adapter piece (130) is disposed on the side of the insulating member (120) away from the cover plate body (110), and the positioning member (122) is used to position the adapter piece (130).

2. The cover plate mechanism according to claim 1, characterized in that, The positioning element (122) is configured to define the position of the adapter piece (130) along a first direction.

3. The cover plate mechanism according to claim 2, characterized in that, The adapter piece (130) abuts against the positioning member (122) along the first direction.

4. The cover plate mechanism according to claim 2, characterized in that, The positioning element (122) includes a positioning groove (1221), and the adapter piece (130) is located within the positioning groove (1221). The positioning groove (1221) includes a first sidewall and a second sidewall spaced apart along the first direction. The first sidewall abuts against one side of the adapter piece (130), and the second sidewall abuts against the other side of the adapter piece (130).

5. The cover plate mechanism according to claim 4, characterized in that, The positioning member (122) includes a first positioning part (1222) and a second positioning part (1223). The first positioning part (1222) and the second positioning part (1223) are spaced apart along the first direction. The positioning groove (1221) is formed between the first positioning part (1222) and the second positioning part (1223). The first positioning part (1222) includes a first sidewall, and the second positioning part (1223) includes a second sidewall.

6. The cover plate mechanism according to claim 1, characterized in that, The insulating element (120) further includes: A limiting member (123) is disposed on the side of the insulating body (121) away from the cover plate body (110). The limiting member (123) is used to limit the tab (210) to restrict the relative movement of the tab (210) and the adapter piece (130).

7. The cover plate mechanism according to claim 6, characterized in that, The limiting member (123) is movably disposed on the insulating body (121); The insulating element (120) further includes: A locking element (124) is disposed between the positioning element (122) and the limiting element (123), and the locking element (124) is used to lock the limiting element (123).

8. The cover plate mechanism according to claim 7, characterized in that, The locking element (124) is constructed as a snap-fit ​​structure.

9. The cover plate mechanism according to claim 7, characterized in that, The locking element (124) includes: A fixing hole (1241) is provided on the limiting member (123); A connector (1242) is disposed on the positioning member (122); When the connector (1242) passes through the fixing hole (1241), the positioning member (122) engages with the limiting member (123).

10. A battery, characterized in that, The battery includes a cover mechanism (100) as described in any one of claims 1 to 9.

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