Cover plate assembly and battery

Abstract

The invention provides a cover plate assembly and a battery, and relates to the technical field of batteries. The cover plate assembly comprises a substrate, a pole, a first buffer piece and a second buffer piece. The pole penetrates through the cover plate, one end of the pole can be connected with an electrode assembly of the battery, and the other end of the pole can be connected with external electric equipment. The first buffer part is located between the first limiting face and the first plate face, when the pole is subjected to acting force facing the first plate face, the first limiting face of the pole can act on the first buffer part, the first buffer part can absorb the acting force of the pole facing the first plate face, and the first limiting face of the pole is prevented from making contact with the first plate face of the substrate to be damaged. And the second buffer piece is located between the second limiting surface and the second plate surface, when the pole is subjected to an acting force facing the second plate surface, the second limiting surface of the pole can act on the second buffer piece, and the second buffer piece can absorb the acting force of the pole facing the second plate surface, so that the second limiting surface of the pole is prevented from being damaged due to contact with the second plate surface of the substrate.

Description

Technical Field

[0001] The present application relates to a cover plate assembly and a battery, belonging to the technical field of batteries. Background Art

[0002] As the smallest energy storage unit, the battery cell also provides the power source for the tool. The battery cell structure usually includes the cover assembly, shell, insulation film and other parts. The core of the cover assembly is the pole, which is the interface that connects the battery cell to the external electrical equipment. One end of the pole is connected to the winding core, and the other end of the pole is inserted into the cover to be electrically connected to the external electrical equipment.

[0003] At present, in order to ensure the connection reliability when the pole is connected to the base plate in the cover plate assembly, the pole and the cover plate cooperate in the axial upper limit of the pole. Specifically, a structure that abuts against the plate surface of the cover plate can be provided on the pole for limiting the position. However, such a structure will cause the pole to directly impact the cover plate when it is subjected to the axial force, resulting in damage to the pole and the cover plate. Summary of the invention

[0004] The present application provides a cover plate assembly and a battery, which solves the problem in the related art that the pole is easily damaged when subjected to an axial force.

[0005] In a first aspect, the present application provides a cover plate assembly, comprising:

[0006] A substrate having a first plate surface and a second plate surface opposite to each other;

[0007] A pole, movably disposed on the base plate, the pole comprising a first limiting surface and a second limiting surface, the first limiting surface is opposite to the first plate surface, and the second limiting surface is opposite to the second plate surface;

[0008] A first buffer member, located between the first limiting surface and the first plate surface;

[0009] A second buffer member is located between the second limiting surface and the second plate surface;

[0010] Wherein, the first buffer component and the second buffer component are made of insulating material.

[0011] In some embodiments, the pole includes a first cylinder, a second cylinder and a third cylinder, the first cylinder is connected to one end of the third cylinder, the second cylinder is connected to the other end of the third cylinder, the outer diameter of the first cylinder and the outer diameter of the second cylinder are both larger than the outer diameter of the third cylinder, the first limiting surface is located on the side of the first cylinder facing the second cylinder, the second limiting surface is located on the side of the second cylinder facing the first cylinder, and the first buffer member and the second buffer member are both sleeved on the third cylinder.

[0012] In some embodiments, both the first buffer and the second buffer cooperate with the substrate to limit position in a direction perpendicular to the thickness of the substrate.

[0013] In some embodiments, a first limiting groove is formed on the first plate surface, a second limiting groove is formed on the second plate surface, the first buffer member includes a first limiting portion, the second buffer member includes a second limiting portion, the first limiting portion is embedded in the first limiting groove, and the second limiting portion is embedded in the second limiting groove.

[0014] In some embodiments, the first buffer further includes a first insulating portion, and the second buffer further includes a second insulating portion, the first insulating portion is located between the side wall of the pole and the substrate, and the second insulating portion is located between the side wall of the pole and the substrate.

[0015] In some embodiments, the second buffer member further includes a third limiting portion, the second limiting surface is provided with a third limiting groove, and the third limiting portion is embedded in the third limiting groove.

[0016] In some embodiments, the cover plate assembly further includes an insulating member, wherein the insulating member is located between the first plate surface and the first buffer member.

[0017] In some embodiments, the insulating member is provided with a fourth limiting groove, and at least a portion of the first buffer member is embedded in the fourth limiting groove.

[0018] In some embodiments, a fifth limiting groove is opened on one side of the substrate facing the insulating member, and the insulating member includes a fourth limiting portion, which is embedded in the fifth limiting groove. When the first buffer member is in a natural state, there is a gap between the fourth limiting portion and the bottom wall of the fifth limiting groove.

[0019] In a second aspect, based on the above cover plate assembly, the present application provides a battery, comprising the above cover plate assembly.

[0020] The cover plate assembly provided in the present application can be applied to a battery, wherein a pole is provided through the cover plate, one end of the pole can be connected to the electrode assembly of the battery, and the other end of the pole can be connected to an external electrical device. The first limiting surface of the pole is opposite to the first plate surface of the substrate so that the pole can be limited to the substrate in the direction toward the first plate surface, and the second limiting surface of the pole is opposite to the second plate surface of the substrate so that the pole can be limited to the substrate in the direction toward the second plate surface, so that the pole is relatively fixed to the substrate in its axial direction. The first buffer is located between the first limiting surface and the first plate surface. When the pole is subjected to a force acting toward the first plate surface, the first limiting surface of the pole can act on the first buffer, and the first buffer can absorb the force of the pole toward the first plate surface to prevent the first limiting surface of the pole from directly contacting the first plate surface of the substrate and causing damage to the pole. The second buffer is located between the second limiting surface and the second plate surface. When the pole is subjected to a force acting toward the second plate surface, the second limiting surface of the pole can act on the second buffer, and the second buffer can absorb the force of the pole toward the second plate surface, thereby preventing the second limiting surface of the pole from directly contacting the second plate surface of the substrate and causing damage to the pole. Thus, the cover assembly of the present application can be made safer and more reliable.

[0021] The battery proposed in the present application uses the above-mentioned cover plate assembly, so that the connection reliability and safety of the battery and the external electrical equipment are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other purposes, features and advantages of the embodiments of the present application will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, multiple embodiments of the present application will be described in an exemplary and non-limiting manner, wherein:

[0023] Figure 1 A schematic diagram of a cover plate assembly according to an embodiment of the present application;

[0024] Figure 2 A schematic top view of a cover plate assembly according to an embodiment of the present application;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross section of AA;

[0026] Figure 4 A schematic diagram of an insulating member of a cover assembly according to an embodiment of the present application;

[0027] Figure 5 Schematic diagram of a substrate of a cover assembly according to an embodiment of the present application.

[0028] Reference numerals:

[0029] 100-substrate, 110-first plate surface, 120-second plate surface, 130-fifth limiting groove,

[0030] 200-pole, 210-first column, 211-first limiting surface, 220-second column, 221-second limiting surface, 230-third column,

[0031] 300-first buffer, 310-first buffer portion, 320-first limit portion, 330-first insulating portion,

[0032] 400 - second buffer, 410 - second buffer portion, 420 - second limiting portion, 430 - second insulating portion, 440 - third limiting portion,

[0033] 500 - insulating member, 510 - fourth limiting groove, 520 - fourth limiting portion. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] As the smallest energy storage unit, the battery cell also provides the power source for the tool. The battery cell structure usually includes the cover assembly, shell, insulation film and other parts. The core of the cover assembly is the pole, which is the interface that connects the battery cell to the external electrical equipment. One end of the pole is connected to the winding core, and the other end of the pole is inserted into the cover to be electrically connected to the external electrical equipment.

[0041] At present, in order to ensure the connection reliability when the pole is connected to the base plate in the cover plate assembly, the pole and the cover plate cooperate in the axial upper limit of the pole. Specifically, a structure that abuts against the plate surface of the cover plate can be provided on the pole for limiting the position. However, such a structure will cause the pole to directly impact the cover plate when it is subjected to the axial force, resulting in damage to the pole and the cover plate.

[0042] The cover plate assembly proposed in the present application can be applied to a battery, wherein a pole is provided through the cover plate, one end of the pole can be connected to the electrode assembly of the battery, and the other end of the pole can be connected to an external electrical device. The first limiting surface of the pole is opposite to the first plate surface of the substrate so that the pole can be limited to the substrate in the direction toward the first plate surface, and the second limiting surface of the pole is opposite to the second plate surface of the substrate so that the pole can be limited to the substrate in the direction toward the second plate surface, so that the pole is relatively fixed to the substrate in its axial direction. The first buffer is located between the first limiting surface and the first plate surface. When the pole is subjected to a force acting toward the first plate surface, the first limiting surface of the pole can act on the first buffer. The first buffer can absorb the force of the pole toward the first plate surface to prevent the first limiting surface of the pole from directly contacting the first plate surface of the substrate and causing damage to the pole. The second buffer is located between the second limiting surface and the second plate surface. When the pole is subjected to a force acting toward the second plate surface, the second limiting surface of the pole can act on the second buffer, and the second buffer can absorb the force of the pole toward the second plate surface, thereby preventing the second limiting surface of the pole from directly contacting the second plate surface of the substrate and causing damage to the pole. Thus, the cover assembly of the present application can be made safer and more reliable.

[0043] The battery proposed in the present application uses the above-mentioned cover plate assembly, so that the connection reliability and safety of the battery and the external electrical equipment are higher.

[0044] The cover plate assembly and the battery provided in the present application are described in detail below in conjunction with specific embodiments.

[0045] The present application proposes a battery, including a housing, an electrode assembly and a cover assembly. The battery can be used as a power battery in a car or in other electrical devices, which is not limited by the present application.

[0046] Among them, the shell is the basic component of the battery of the present application, and the shell can provide a mounting base for at least some of the other components of the battery and protect at least some of the other components. The shell can be made of metal material, so that the shell has better structural strength, thereby making the durability and reliability of the shell better. The shell has a cavity, and the cavity in the shell can be used to install at least some of the other components of the battery. The electrode assembly can be arranged in the cavity of the shell, and the cover plate assembly blocks the opening of the cavity of the shell, and the electrode assembly can be electrically connected to the cover plate assembly.

[0047] The present application also proposes a cover plate assembly, which can be applied to the above battery. Figures 1 to 3 As shown, the cap plate assembly includes a base plate 100 , a pole 200 , a first buffer member 300 and a second buffer member 400 .

[0048] Among them, the substrate 100 is the basic component of the cover assembly of the present application, and the substrate 100 can provide an installation foundation for at least part of other components of the cover assembly. The substrate 100 can be made of metal material, so that the substrate 100 has a better structural strength, thereby making the durability and reliability of the substrate 100 better. The substrate 100 can be set at the opening of the cavity of the shell, and the opening of the cavity is blocked, so that the electrode assembly in the shell can be enclosed in the cavity of the shell, so as to protect the electrode assembly.

[0049] The pole 200 is penetrated through the substrate 100, one end of the pole 200 extends into the cavity of the shell and is connected to the electrode assembly, and the other end of the pole 200 passes through the substrate 100 to the outside of the shell and is connected to an external electrical connection device, so that the electrode assembly can be connected to the external electrical connection device to realize the charging and discharging function.

[0050] The substrate 100 has a first plate surface 110 and a second plate surface 120, and the first plate surface 110 and the second plate surface 120 are two plate surfaces opposite to each other in the thickness direction of the substrate 100. The pole 200 has a first limiting surface 211 and a second limiting surface 221, and the first limiting surface 211 of the pole 200 is opposite to the first plate surface 110 of the substrate 100. When the pole 200 is subjected to a force directed toward the first plate surface 110 of the substrate 100, the first limiting surface 211 of the pole 200 and the first plate surface 110 of the substrate 100 can limit each other, so that the pole 200 can no longer move in the direction toward the first plate surface 110 of the substrate 100, so that the pole 200 and the substrate 100 can be limited in the direction toward the first plate surface 110. The second limiting surface 221 of the pole 200 is opposite to the second plate surface 120 of the substrate 100. When the pole 200 is subjected to a force acting toward the second plate surface 120 of the substrate 100, the second limiting surface 221 of the pole 200 and the second plate surface 120 of the substrate 100 can limit each other, so that the pole 200 can no longer move in the direction toward the second plate surface 120 of the substrate 100, so that the pole 200 and the substrate 100 can be limited in the direction toward the second plate surface 120. In this way, the pole 200 can be limited and matched with the substrate 100 in both the positive and negative directions of the axial direction of the pole 200 to be fixed.

[0051] The first buffer 300 is located between the first limiting surface 211 of the pole 200 and the first plate surface 110 of the substrate 100, so that the first buffer 300 is clamped and fixed by the pole 200 and the substrate 100. The first buffer 300 is a flexible structural member, which can be deformed to absorb the external force when subjected to an external force. When the pole 200 is subjected to a force directed toward the first plate surface 110 of the substrate 100, the first limiting surface 211 of the pole 200 can squeeze the first buffer 300, and the first buffer 300 can absorb the impact force of the pole 200, so that the first limiting surface 211 of the pole 200 does not directly collide with the first plate surface 110 of the substrate 100, thereby avoiding the pole 200 and the substrate 100 from being damaged by collision, so as to achieve the purpose of protecting the pole 200 and the substrate 100.

[0052] The second buffer 400 is located between the second limiting surface 221 of the pole 200 and the second plate surface 120 of the substrate 100, so that the second buffer 400 is clamped and fixed by the pole 200 and the substrate 100. The second buffer 400 is a flexible structural member, which can be deformed to absorb the external force when subjected to an external force. When the pole 200 is subjected to a force directed toward the second plate surface 120 of the substrate 100, the second limiting surface 221 of the pole 200 can squeeze the second buffer 400, and the second buffer 400 can absorb the impact force of the pole 200, so that the second limiting surface 221 of the pole 200 does not directly collide with the second plate surface 120 of the substrate 100, thereby avoiding the pole 200 from being damaged by collision with the substrate 100, so as to achieve the purpose of protecting the pole 200 and the substrate 100.

[0053] The first buffer 300 and the second buffer 400 may also be elastic structural members, so that when the pole 200 is no longer subjected to the axial force, the elastic restoring force of the first buffer 300 or the second buffer 400 can drive the pole 200 to reset.

[0054] In some embodiments, reference Figures 1 to 3As shown, the pole 200 of the present application may be provided to include a first column 210, a second column 220 and a third column 230, wherein the first column 210 is connected to one end of the third column 230, and the second column 220 is connected to the other end of the third column 230, so that the first body 210 and the second body 220 may be separately arranged at both ends of the third body 230. Among them, the third column 230 is arranged through the substrate 100, and the outer diameter of the first column 210 is greater than the outer diameter of the third column 230, so that a step surface may be formed at the connection between the first column 210 and the third column 230, and the step surface is the first limiting surface 211 of the pole 200. The first limiting surface 211 is opposite to the first plate surface 110 of the substrate 100, so that the first column 210 can cooperate with the substrate 100 in the direction toward the first plate surface 110. The outer diameter of the second column 220 is greater than the outer diameter of the third column 230, so that a step surface can be formed at the connection between the second column 220 and the third column 230, and the step surface is the second limiting surface 221 of the pole 200. The second limiting surface 221 is opposite to the second plate surface 120 of the substrate 100, so that the second column 220 can cooperate with the substrate 100 in the direction toward the second plate surface 120.

[0055] The first buffer 300 can be sleeved on the third column 230, so that the third column 230 can limit the first buffer 300, so that the first buffer 300 can be relatively fixed with the third column 230 in the radial direction of the third column 230. Specifically, the first buffer 300 can be provided with a first through hole for the third column 230 to pass through, and the inner diameter of the first through hole can be set to be slightly larger than the outer diameter of the third column 230, so that the first buffer 300 can be conveniently sleeved on the third column 230. In addition, when the pole 200 moves along its axial direction under the action of external force, the pole 200 will not rub against the first buffer 300 in its axial direction, thereby avoiding friction damage to the first buffer 300.

[0056] The second buffer 400 can be sleeved on the third column 230, so that the third column 230 can limit the second buffer 400, so that the second buffer 400 can be relatively fixed with the third column 230 in the radial direction of the third column 230. Specifically, the second buffer 400 can be provided with a second through hole for the third column 230 to pass through, and the inner diameter of the second through hole can be set to be slightly larger than the outer diameter of the third column 230, so that the second buffer 400 can be conveniently sleeved on the third column 230. In addition, when the pole 200 moves along its axial direction under the action of external force, the pole 200 will not rub against the second buffer 400 in its axial direction, thereby avoiding friction damage to the second buffer 400.

[0057] In some embodiments, reference Figures 1 to 3As shown, the first buffer component 300 in the present application cooperates with the substrate 100 in a limit position in a direction perpendicular to the thickness of the substrate 100, so as to prevent the first buffer component 300 from moving in a direction perpendicular to the thickness of the substrate 100, that is, in a horizontal direction, to ensure that the first buffer component 300 is always located between the first plate surface 110 of the substrate 100 and the first limit surface 211 of the first buffer component 300.

[0058] Specifically, the substrate 100 may be provided with a first limiting groove on the first plate surface 110, and the notch of the first limiting groove may be arranged to face the first limiting surface 211 of the first pole 200. The first buffer 300 includes a first buffer portion 310 and a first limiting portion 320, the first buffer portion 310 is sandwiched between the first limiting surface 211 and the first plate surface 110, the first limiting surface 211 and the second limiting surface 221 are located on opposite sides of the first buffer portion 310, and the first limiting portion 320 is located on the first limiting surface 211 of the first buffer portion 310 facing the first plate surface 110. The first limiting portion 320 may be embedded in the first limiting groove, and the two side walls of the first limiting groove may limit the first limiting portion 320 in a direction perpendicular to the thickness of the substrate 100, thereby limiting the first buffer 300, so that the first buffer 300 can be more stably arranged between the first plate surface 110 and the first limiting surface 211.

[0059] The second buffer component 400 in the present application cooperates with the substrate 100 in a limit position in a direction perpendicular to the thickness of the substrate 100, so as to prevent the second buffer component 400 from moving in a direction perpendicular to the thickness of the substrate 100, that is, in a horizontal direction, to ensure that the second buffer component 400 is always located between the second plate surface 120 of the substrate 100 and the second limit surface 221 of the second buffer component 400.

[0060] Specifically, the substrate 100 may be provided with a second limiting groove on the second plate surface 120, and the notch of the second limiting groove may be arranged to face the second limiting surface 221 of the second pole 200. The second buffer 400 includes a second buffer portion 410 and a second limiting portion 420, the second buffer portion 410 is sandwiched between the second limiting surface 221 and the second plate surface 120, the second limiting surface 221 and the second limiting surface 221 are located on opposite sides of the second buffer portion 410, and the second limiting portion 420 is located on the second limiting surface 221 of the second buffer portion 410 facing the second plate surface 120. The second limiting portion 420 may be embedded in the second limiting groove, and the two side walls of the second limiting groove may limit the second limiting portion 420 in a direction perpendicular to the thickness of the substrate 100, thereby limiting the second buffer 400, so that the second buffer 400 may be more stably arranged between the second plate surface 120 and the second limiting surface 221.

[0061] In some embodiments, reference Figures 1 to 3As shown, the first buffer member 300 of the present application may also include a first insulating portion 330, which is connected to the first buffer portion 310, and is located between the side wall of the pole 200 and the substrate 100. The first insulating portion 330 may separate the side wall of the pole 200 from the substrate 100. Specifically, the first insulating portion 330 is located between the side wall of the third column 230 and the substrate 100, and the first insulating portion 330 may prevent the third column 230 from directly contacting the substrate 100 and causing a short circuit in the battery.

[0062] The second buffer member 400 of the present application may also include a second insulating portion 430, which is connected to the second buffer portion 410, and is located between the side wall of the pole 200 and the substrate 100. The second insulating portion 430 can separate the side wall of the pole 200 from the substrate 100. Specifically, the second insulating portion 430 is located between the side wall of the third column 230 and the substrate 100, and the second insulating portion 430 can prevent the third column 230 from directly contacting the substrate 100 and causing a short circuit in the battery.

[0063] In some embodiments, the second buffer 400 of the present application may also be provided with a third limiting portion 440, the third limiting portion 440 is located on the side of the second buffer 410 facing away from the second limiting portion 420, a third limiting groove may be provided on the second limiting surface 221 of the pole 200, and the second limiting portion 420 may be embedded in the third limiting groove. The inner wall opposite to the third limiting groove may limit the third limiting portion 440 in the radial direction of the pole 200, so that the second buffer 400 and the pole 200 are limited in the direction perpendicular to the thickness of the substrate 100, so as to further improve the stability of the second buffer 400.

[0064] In some embodiments, reference Figures 1 to 4 As shown, the cover plate assembly of the present application may also be provided with a first insulating member 500. Among them, the first insulating member 500 is located between the first buffer member 300 and the first limiting surface 211 of the pole 200. The first insulating member 500 can separate the first buffer member 300 from the pole 200, further ensuring that the pole 200 will not directly contact the substrate 100 and cause a short circuit in the battery. The first insulating member 500 may be provided with a fourth limiting groove 510, and a portion of the first column 210 of the pole 200 is embedded in the fourth limiting groove 510 of the first insulating member 500, so that the first insulating member 500 and the first column 210 can be relatively fixed. Specifically, the fourth limiting groove 510 is located on the end side of the first insulating member 500 facing the first column 210, and the first insulating member 500 can enclose a portion of the first column 210 therein.

[0065] In some embodiments, reference Figures 3 to 5As shown, the substrate 100 in the present application may be provided with a fifth limiting groove 130 on one side facing the insulating member 500, and the insulating member 500 may be provided with a fourth limiting portion 520, and the fourth limiting portion 520 is located on the side of the insulating member 500 facing the substrate 100. The fourth limiting portion 520 may be embedded in the first limiting groove. In this way, the insulating member 500 and the substrate 100 can be mutually limited in the direction perpendicular to the thickness of the substrate 100. When the first buffer member 300 is in a natural state, that is, the pole 200 has not been subjected to an axial force toward the first plate surface 110 of the substrate 100, the fourth limiting portion 520 and the bottom wall of the fifth limiting groove 130 have a spacing, so that when the pole 200 is subjected to a force toward the first plate surface 110 and moves toward the first plate surface 110, the fourth limiting portion 520 can move toward the bottom wall of the fifth limiting groove 130, thereby avoiding the insulating member 500 and the substrate 100 from interfering with each other and causing the pole 200 to be unable to move.

[0066] The number of the fifth limiting grooves 130 can be multiple, and correspondingly, the number of the fourth limiting portions 520 can also be multiple, so that the limiting and fixing effect of the substrate 100 and the insulating member 500 is better.

[0067] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims

1. A cover plate assembly, characterized in that: include: A substrate (100) having a first plate surface (110) and a second plate surface (120) opposite to each other; A pole (200) is movably disposed on the substrate (100), the pole (200) comprising a first limiting surface (211) and a second limiting surface (221), the first limiting surface (211) being opposite to the first plate surface (110), and the second limiting surface (221) being opposite to the second plate surface (120); A first buffer member (300) is located between the first limiting surface (211) and the first plate surface (110); A second buffer member (400) is located between the second limiting surface (221) and the second plate surface (120); Wherein, the first buffer component (300) and the second buffer component (400) are made of insulating material.

2. The cover plate assembly according to claim 1, characterized in that: The pole (200) comprises a first column (210), a second column (220) and a third column (230); the first column (210) is connected to one end of the third column (230), and the second column (220) is connected to the other end of the third column (230); the outer diameter of the first column (210) and the outer diameter of the second column (220) are both greater than the outer diameter of the third column (230); the first limiting surface (211) is located on a side of the first column (210) facing the second column (220); the second limiting surface (221) is located on a side of the second column (220) facing the first column (210); and the first buffer (300) and the second buffer (400) are both sleeved on the third column (230).

3. The cover plate assembly according to claim 1, characterized in that: The first buffer component (300) and the second buffer component (400) are both in upper limit position cooperation with the substrate (100) in a direction perpendicular to the thickness of the substrate (100).

4. The cover plate assembly according to claim 3, characterized in that: A first limiting groove is formed on the first plate surface (110), a second limiting groove is formed on the second plate surface (120), the first buffer component (300) includes a first limiting portion (320), the second buffer component (400) includes a second limiting portion (420), the first limiting portion (320) is embedded in the first limiting groove, and the second limiting portion (420) is embedded in the second limiting groove.

5. The cover plate assembly according to claim 3, characterized in that: The first buffer member (300) further includes a first insulating portion (330), and the second buffer member (400) further includes a second insulating portion (430), wherein the first insulating portion (330) is located between the side wall of the pole (200) and the substrate (100), and the second insulating portion (430) is located between the side wall of the pole (200) and the substrate (100).

6. The cover plate assembly according to claim 1, characterized in that: The second buffer component (400) further comprises a third limiting portion (440), the second limiting surface (221) is provided with a third limiting groove, and the third limiting portion (440) is embedded in the third limiting groove.

7. The cover plate assembly according to any one of claims 1 to 6, characterized in that: The cover plate assembly further comprises an insulating member (500), wherein the insulating member (500) is located between the first plate surface (110) and the first buffer member (300).

8. The cover plate assembly according to claim 7, characterized in that: The insulating member (500) is provided with a fourth limiting groove (510), and at least a portion of the first buffer member (300) is embedded in the fourth limiting groove (510).

9. The cover plate assembly according to claim 8, characterized in that: A fifth limiting groove (130) is provided on one side of the substrate (100) facing the insulating member (500); the insulating member (500) includes a fourth limiting portion (520); the fourth limiting portion (520) is embedded in the fifth limiting groove (130); when the first buffer member (300) is in a natural state, a gap exists between the fourth limiting portion (520) and the bottom wall of the fifth limiting groove (130).

10. A battery, characterized in that: The invention comprises a cover plate assembly as claimed in any one of claims 1 to 9.

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