Cover plate assembly of battery, battery and electric equipment

Abstract

The utility model discloses a cover plate assembly of a battery, the battery and electric equipment, the cover plate assembly comprises: a cover plate, the cover plate is provided with a through hole; and the insulation cap is arranged on the cover plate in a covering manner, and at least part of the insulation cap is clamped in the through hole. The cover plate is provided with the through hole, and at least part of the insulation cap is clamped in the through hole, so that the connection mode of the insulation cap and the cover plate is simple and convenient, the connection between the insulation cap and the cover plate can be firm and reliable, and in addition, the clamping semi-fixing mode is adopted, so that the cover plate assembly is simple in overall structure, simple in process and convenient to manufacture. Repeated assembly and disassembly of the insulating cap can be realized, and repeated utilization of the insulating part can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, and particularly relates to a cover plate assembly of a battery, a battery and an electrical equipment. Background Art

[0002] In the related art, an insulating member is provided when the battery is externally connected to the tab, and a ring of insulating plate is fixed tightly under the cover plate. However, there are also significant defects: there is no insulating member between the cap and the cover plate or the installation of the insulating member is complex. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a cover plate assembly of a battery, which can make the connection between the insulating cap and the cover plate firm and reliable, and can realize the repeated assembly and disassembly of the insulating cap.

[0004] The utility model further provides a battery.

[0005] The utility model further provides an electrical equipment.

[0006] The cover plate assembly of the battery according to the utility model includes: a cover plate provided with a through hole; an insulating cap covering the cover plate, and at least part of the insulating cap is clamped in the through hole.

[0007] In the cover plate assembly of the battery according to the utility model, by providing a through hole in the cover plate and clamping at least part of the insulating cap in the through hole, the connection mode between the insulating cap and the cover plate is simple and convenient, and the connection between the insulating cap and the cover plate can be firm and reliable. In addition, by adopting the semi-fixed clamping method, the overall structure of the cover plate assembly is simple, the process is simple, the repeated assembly and disassembly of the insulating cap can be realized, and the repeated use of the insulating member can be realized.

[0008] In some examples of the utility model, the insulating cap includes: a main body portion, a clamping portion and a first limiting portion. The clamping portion is clamped in the through hole, the first limiting portion is connected between the main body portion and the clamping portion, and the first limiting portion is in limiting cooperation with one side of the cover plate.

[0009] In some examples of the utility model, in the first direction, the size of the clamping portion is a, the size of the through hole is b, and the size of the first limiting portion is c. The relationship between a, b and c is: c > a > b, 1.1 < c / b < 1.3, 1.01 < a / b < 1.2, where the first direction is the width direction of the insulating cap.

[0010] In some examples of the present utility model, in the second direction, the size of the clamping portion is d, the size of the through hole is e, the projected area of the clamping portion on the horizontal plane is s1, and the projected area of the through hole on the horizontal plane is s2. The relationship between d and e is: d = e, and the relationship between s1 and s2 is: 1 < s1 / s2 < 1.5, where the second direction is the length direction of the insulating cap, and the second direction is perpendicular to the first direction.

[0011] In some examples of the present utility model, in the second direction, the size of the clamping portion is d, the size of the through hole is e, and the relationship between d and e is: 1.01 < d / e < 1.2, where the second direction is the length direction of the insulating cap, and the second direction is perpendicular to the first direction.

[0012] In some examples of the present utility model, in the third direction, the size of the clamping portion is f, the size of the cover plate is g, and the relationship between f and g is: g < f, where the third direction is the thickness direction of the insulating cap, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0013] In some examples of the present utility model, the insulating cap further includes: a reinforcing portion, and the reinforcing portion is connected to the inner side of the clamping portion.

[0014] In some examples of the present utility model, the reinforcing portion is configured as a hooked structure.

[0015] In some examples of the present utility model, a chamfer structure inclined inward is provided at the connection between the reinforcing portion and the clamping portion.

[0016] In some examples of the present utility model, the insulating cap further includes: a second limiting portion, and the second limiting portion is connected to the end of the clamping portion away from the main body portion, and the second limiting portion is in limiting cooperation with the through hole.

[0017] In some examples of the present utility model, in the direction perpendicular to the first direction, the cross-sectional shape of the clamping portion is one of a rectangle, a circle, or an ellipse.

[0018] In some examples of the present utility model, the clamping portion is configured as an elastic structural member.

[0019] In some examples of the present utility model, the cover plate assembly further includes: a cap, and the cap is disposed on the outer side of the insulating cap.

[0020] The battery according to the present utility model includes: a battery cell, and the battery cell is provided with an electrode tab; the cover plate assembly of the battery described above, a cavity is formed in the insulating cap, and at least a part of the electrode tab extends into the cavity.

[0021] In some examples of the present utility model, there is one insulating cap; or there are at least two insulating caps, and the at least two insulating caps are spaced apart from each other.

[0022] In some examples of the present utility model, the cover plate assembly further includes: a cap. When there are at least two insulating caps, there is one cap, and the one cap is disposed outside the at least two insulating caps; or there are at least two caps, and the at least two caps are respectively disposed outside the at least two insulating caps in one-to-one correspondence.

[0023] The electrical equipment according to the present utility model includes: the battery described above.

[0024] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0025] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0026] Figure 1 is a partial structural schematic diagram of a battery according to an embodiment of the present utility model;

[0027] Figure 2 is a cross-sectional view of the first structure of a battery according to an embodiment of the present utility model;

[0028] Figure 3 is a first structural schematic diagram of an insulating cap;

[0029] Figure 4 is a cross-sectional view of the first structure of an insulating cap;

[0030] Figure 5 is a cross-sectional view of the second structure of a battery according to an embodiment of the present utility model;

[0031] Figure 6 is a second structural schematic diagram of an insulating cap;

[0032] Figure 7 is a cross-sectional view of the third structure of a battery according to an embodiment of the present utility model;

[0033] Figure 8 is a third structural schematic diagram of an insulating cap;

[0034] Figure 9 is a partial structural schematic diagram of a cover plate assembly according to an embodiment of the present utility model.

[0035] Reference Signs:

[0036] 1. Cover assembly;

[0037] 10. Cover; 20. Insulating part; 200. Through hole; 30. Insulating cap; 300. Main body part; 301. Clamping part; 302. First limiting part; 303. Reinforcing part; 304. Chamfer structure; 305. Second limiting part; 306. Cavity; 2. Battery; 40. Battery cell; 400. Tab; 50. Cap. Detailed implementation manners

[0038] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0039] Reference will be made below to Figures 1-8 Describe the cover assembly 1 of the battery 2 according to the embodiments of the present utility model. The cover assembly 1 is generally covered on the housing of the battery 2.

[0040] As Figure 1 . Figure 2 . Figure 5 And Figure 7 As shown in

[0041] As Figure 1 . Figure 2 . Figure 5 And Figure 7 The cover assembly 1 of the battery 2 according to the embodiments of the present utility model includes: a cover 10, an insulating part 20, and an insulating cap 30. The cover 10 is the main part of the cover assembly 1 and can be used to install and set other components. The cover 10 is covered on the housing of the battery 2 and can play a certain role in sealing and protection. The insulating part 20 is a component of the cover assembly 1 and mainly plays an insulating role. The insulating part 20 can generally insulate and protect the battery cells 40 to prevent short circuits between the battery cells 40 and improve the safety of the battery 2. The insulating cap 30 is a component of the cover assembly 1. A cavity 306 is formed in the insulating cap 30, and the tabs 400 of the battery cells 40 can extend into the cavity 306, thereby reducing the redundant space between the battery cells 40 and the cover 10, and reducing the short circuit or low life of the battery 2 caused by the bending and stacking of the tabs 400 when entering the housing, effectively improving the internal volume energy density and cycle life of the battery cells 40. Among them, the material of the cover 10 can be a metal material such as aluminum.As shown, the cover plate 10 is provided with a through hole 200. The insulating member 20 is located inside the cover plate 10. The through hole 200 can be jointly defined by the insulating member 20 and the cover plate 10. It can be understood that since the battery cell 40 is located inside the cover plate 10, and then the insulating member 20 is arranged inside the cover plate 10, in this way, the insulating member 20 can better cooperate with the battery cell 40 for insulation, thereby preventing short circuits between the battery cells 40 and improving the safety of the battery 2. A through hole 200 is defined between the insulating member 20 and the cover plate 10, so that the tab 400 of the battery cell 40 can extend into the cavity 306 through the through hole 200.

[0042] As Figure 1 , Figure 2 , Figure 5 and Figure 7 shown, the insulating cap 30 is covered on the side of the cover plate 10 away from the insulating member 20, and at least part of the insulating cap 30 is clamped in the through hole. By covering the insulating cap 30 on the cover plate 10, since the cover plate 10 is provided with the through hole 200, and the insulating cap 30 is specifically covered at the through hole 200, in this way, the tab 400 of the battery cell 40 can extend into the cavity 306 through the through hole 200, and the insulating cap 30 can play an insulating effect, and at least part of the insulating cap 30 is clamped in the through hole 200, so that the insulating cap 30 is located between the cover plate 10 and the tab 400 of the battery cell 40. Thus, the insulating cap 30 can prevent the tab 400 from contacting the cover plate 10 and achieve the insulating function. Among them, the height of the tab 400 is less than the height of the insulating cap 30 to prevent the tab 400 from directly contacting the insulating cap 30, and the welded part of the tab 400 can be all or part of it located inside the cavity 306.

[0043] Therefore, by providing the through hole 200 in the cover plate 10 and clamping at least part of the insulating cap 30 in the through hole 200, the connection method between the insulating cap 30 and the cover plate 10 is simple and convenient, and the connection between the insulating cap 30 and the cover plate 10 can be firm and reliable. In addition, by adopting this semi-fixed clamping method, the overall structure of the cover plate assembly 1 is simple and the process is simple. The insulating cap 30 can be repeatedly assembled and disassembled, and the insulating member can be reused.

[0044] Specifically, as Figure 3 , Figure 4 , Figure 6 and Figure 8As shown, the insulating cap 30 includes: a main body portion 300, a clamping portion 301, and a first limiting portion 302. The clamping portion 301 is clamped within the through hole 200. The first limiting portion 302 is connected between the main body portion 300 and the clamping portion 301. Moreover, the first limiting portion 302 is in limiting cooperation with one side of the cover plate 10, and it is the side of the cover plate 10 away from the insulating member 20. The main body portion 300 is the main part of the insulating cap 30 and is the main part forming the cavity 306. The clamping portion 301 is a component of the insulating cap 30 and mainly plays a role in clamping cooperation. The first limiting portion 302 is also a component of the insulating cap 30 and mainly can limit the displacement of the insulating cap 30 within the through hole 200, thereby making the connection between the insulating cap 30 and the cover plate 10 more stable and reliable. The clamping portion 301 is clamped within the through hole 200. At this time, the connection method between the insulating cap 30 and the cover plate 10 is simple and convenient, and it can make the connection between the insulating cap 30 and the cover plate 10 firm and reliable. The first limiting portion 302 is connected between the main body portion 300 and the clamping portion 301. In this way, the first limiting portion 302, the main body portion 300, and the clamping portion 301 form a whole, which is convenient for the installation and setting of the insulating cap 30.

[0045] Among them, as Figure 1 and Figure 4 shown, in the first direction, the dimension of the clamping portion 301 is a, the dimension of the through hole 200 is b, and the dimension of the first limiting portion 302 is c. The relationship among a, b, and c is: c > a > b, 1.1 < c / b < 1.3, 1.01 < a / b < 1.2. Among them, the first direction is the width direction of the insulating cap 30. It should be noted that in the first direction, the dimension a of the clamping portion 301, the dimension b of the through hole 200, and the dimension c of the first limiting portion 302 need to satisfy a certain relationship, that is, the dimension c of the first limiting portion 302 is greater than the dimension a of the clamping portion 301 and greater than the dimension b of the through hole 200. At this time, the cover plate assembly 1 is more in line with the actual working conditions. Among them, the first direction refers to the width direction of the insulating cap 30.

[0046] It should be noted that in the first direction, the ratio between the dimension c of the first limiting portion 302 and the dimension b of the through hole 200 needs to satisfy a certain range. Specifically, the ratio between the dimension c of the first limiting portion 302 and the dimension b of the through hole 200 cannot be too small, that is, less than 1.1. In this case, the gap between the dimension c of the first limiting portion 302 and the dimension b of the through hole 200 is too small, which will affect the limiting effect of the first limiting portion 302 at this time, and may cause the insulating cap 30 to displace within the through hole 200, thereby affecting the stability and reliability of the connection between the insulating cap 30 and the cover plate 10. At the same time, the ratio between the dimension c of the first limiting portion 302 and the dimension b of the through hole 200 cannot be too large, that is, greater than 1.3. In this case, the gap between the dimension c of the first limiting portion 302 and the dimension b of the through hole 200 is too large. On the premise that the first limiting portion 302 can play a limiting effect, the dimension c of the first limiting portion 302 is too large, which will cause an increase in cost. In the first direction, the dimension c of the first limiting portion 302 is greater than the dimension b of the through hole 200, so that the insulating cap 30 is located above the outer side surface of the cover plate 10 to provide a cavity 306 with sufficient height to accommodate the tab 400.

[0047] In addition, in the first direction, the ratio between the dimension a of the clamping portion 301 and the dimension b of the through hole 200 needs to satisfy a certain range. Specifically, the ratio between the dimension a of the clamping portion 301 and the dimension b of the through hole 200 cannot be too small, that is, less than 1.01. In this case, the gap between the dimension a of the clamping portion 301 and the dimension b of the through hole 200 is too small, which will affect the clamping fit between the clamping portion 301 and the through hole 200 at this time, and the interference fit between the clamping portion 301 and the through hole 200 cannot be achieved, thereby affecting the stability and reliability of the connection between the insulating cap 30 and the cover plate 10. At the same time, the ratio between the dimension a of the clamping portion 301 and the dimension b of the through hole 200 cannot be too large, that is, greater than 1.2. In this case, the gap between the dimension a of the clamping portion 301 and the dimension b of the through hole 200 is too large, and the clamping portion 301 may not be able to enter the through hole 200, affecting the clamping fit between the clamping portion 301 and the through hole 200, and at least part of the insulating cap 30 cannot be clamped in the through hole 200, or when the clamping portion 301 enters the through hole 200, the structures of the cover plate 10 and the insulating member 20 will be affected. In addition, when the dimension a of the clamping portion 301 is too large, the cost will increase at this time.

[0048] In addition, as Figure 1 and Figure 2As shown, in the second direction, the dimension of the clamping portion 301 is d, the dimension of the through hole 200 is e, the projected area of the clamping portion 301 on the horizontal plane is s1, and the projected area of the through hole 200 on the horizontal plane is s2. The relationship between d and e is: d = e, and the relationship between s1 and s2 is: 1 < s1 / s2 < 1.5. Here, the second direction is the length direction of the insulating cap 30, and the second direction is perpendicular to the first direction. It should be noted that in the second direction, the dimension d of the clamping portion 301 and the dimension e of the through hole 200 need to satisfy a certain relationship, that is, the dimension d of the clamping portion 301 is equal to the dimension e of the through hole 200. In this way, in the second direction, the insulating cap 30 and the through hole 200 can achieve a perfect clamping fit, making the connection between the insulating cap 30 and the cover plate 10 more stable and reliable. Here, the second direction refers to the length direction of the insulating cap 30, and the second direction is perpendicular to the first direction.

[0049] It should be noted that in the second direction, the ratio between the projected area s1 of the clamping portion 301 on the horizontal plane and the projected area s2 of the through hole 200 on the horizontal plane needs to satisfy a certain range. Specifically, the ratio between the projected area s1 of the clamping portion 301 on the horizontal plane and the projected area s2 of the through hole 200 on the horizontal plane cannot be too small, that is, less than 1. In this case, when in the second direction, the dimension d of the clamping portion 301 is equal to the dimension e of the through hole 200, in the first direction, the dimension c of the clamping portion 301 is less than the dimension b of the through hole 200. At this time, it will affect the clamping fit between the insulating cap 30 and the through hole 200, thus affecting the stability and reliability of the connection between the insulating cap 30 and the cover plate 10. At the same time, the ratio between the projected area s1 of the clamping portion 301 on the horizontal plane and the projected area s2 of the through hole 200 on the horizontal plane cannot be too large, that is, greater than 1.5. In this case, when in the second direction, the dimension d of the clamping portion 301 is equal to the dimension e of the through hole 200, in the first direction, the dimension a of the clamping portion 301 is greater than 1.5 times the dimension b of the through hole 200. In this way, the gap between the dimension a of the clamping portion 301 and the dimension b of the through hole 200 is too large, and the clamping portion 301 may not be able to enter the through hole 200, affecting the clamping fit between the clamping portion 301 and the through hole 200, and unable to achieve at least partial clamping of the insulating cap 30 in the through hole 200, or when the clamping portion 301 enters the through hole 200, it will affect the structure of the cover plate 10 and the insulating part 20. In addition, when the dimension a of the clamping portion 301 is too large, it will cause an increase in cost.

[0050] Set the dimension d of the clamping portion 301 in the second direction to be equal to the dimension e of the through hole 200. The ratio between the projected area s1 of the first limiting portion 302 on the horizontal plane and the projected area s2 of the through hole 200 on the horizontal plane is 1 - 1.5. Such dimensions enable the clamping portion 301 to be exactly inserted into the through hole 200 of the cover plate 10 in the second direction. The dimension of the clamping portion 301 in the first direction is slightly larger than that of the through hole 200. At this time, an interference fit in terms of dimensions can be achieved. The insulating cap 30 is inserted into the through hole 200 along the first direction. Under such dimensional assembly, if pressure bonding is adopted, a pressure needs to be applied to the clamping portion 301 perpendicular to the length direction of the insulating cap 30. The clamping portion 301 deforms, making the dimension a of the clamping portion 301 equal to the dimension b of the through hole 200, so as to insert the clamping portion 301 into the through hole 200. Or the expansion and contraction method can also be used. Heat the cover plate 10 and the insulating plate 20 to make the through hole 200 expand, and then freely send the insulating cap 30 into the through hole 200. Or cool the insulating cap 30 to make the volume of the insulating cap 30 shrink, and then freely send the insulating cap 30 into the through hole 200.

[0051] Of course, as Figure 1 and Figure 4 shown, in the second direction, the dimension of the clamping portion 301 is d, and the dimension of the through hole 200 is e. The relationship between d and e is: 1.01 < d / e < 1.2. Here, the second direction is the length direction of the insulating cap 30, and the second direction is perpendicular to the first direction. It should be noted that in the second direction, the ratio between the dimension d of the clamping portion 301 and the dimension e of the through hole 200 needs to meet a certain range. Specifically, the ratio between the dimension d of the clamping portion 301 and the dimension e of the through hole 200 cannot be too small, that is, less than 1.01. In this case, the gap between the dimension d of the clamping portion 301 and the dimension e of the through hole 200 is too small, which will affect the clamping fit between the clamping portion 301 and the through hole 200, and the interference fit between the clamping portion 301 and the through hole 200 cannot be achieved, thus affecting the stability and reliability of the connection between the insulating cap 30 and the cover plate 10. At the same time, the ratio between the dimension d of the clamping portion 301 and the dimension e of the through hole 200 cannot be too large, that is, greater than 1.2. In this case, the gap between the dimension d of the clamping portion 301 and the dimension e of the through hole 200 is too large, and the clamping portion 301 may not be able to enter the through hole 200, affecting the clamping fit between the clamping portion 301 and the through hole 200, and at least part of the insulating cap 30 cannot be clamped in the through hole 200, or the clamping portion 301 enters the through hole 200, which will affect the structures of the cover plate 10 and the insulating member 20. In addition, if the dimension d of the clamping portion 301 is too large, the cost will increase. Here, the second direction refers to the length direction of the insulating cap 30, and the second direction is perpendicular to the first direction.

[0052] Set the ratio of the size d of the clamping portion 301 in the second direction to the size e of the through hole 200 to be 1.01 - 1.2. Under this size assembly, if pressure joining is adopted, pressure needs to be applied to the four side surfaces of the clamping portion 301 perpendicular to the first direction and the second direction to cause elastic deformation of the clamping portion 301, and then it is inserted into the through hole 200. The clamping portion 301 relies on the elastic deformation generated by interference fit to closely adhere to the inner wall of the through hole 200 formed by the cover plate 10 and the insulating plate 20. The mechanical engagement of the mortise and tenon-like structure enables the insulating cap 30 to be repeatedly disassembled and assembled for reuse. Or the expansion and contraction method can also be used. Heat the cover plate 10 and the insulating plate 20 to expand the through hole 200, and then freely insert the insulating cap 30 into the through hole 200. Or cool the insulating cap 30 to shrink its volume, and then freely insert the insulating cap 30 into the through hole 200.

[0053] In addition, as Figure 2 shown, in the third direction, the size of the clamping portion 301 is f, the size of the cover plate 10 is g, and the size of the insulating part 20 is h. The relationship among f, g, and h is: g < f, and f / (g + h) < 1.2. Here, the third direction is the thickness direction of the insulating cap 30, and the first direction, the second direction, and the third direction are perpendicular to each other pairwise. It should be noted that in the third direction, the size f of the clamping portion 301, the size g of the cover plate 10, and the size h of the insulating part 20 need to satisfy a certain relationship, that is, the size g of the cover plate 10 is less than the size f of the clamping portion 301, and the ratio of the size f of the clamping portion 301 to the sum of the size g of the cover plate 10 and the size h of the insulating part 20 is less than 1.2. This can make the bottom surface of the clamping portion 30 lower than the lower surface of the cover plate 10, slightly higher than or flush with the lower surface of the insulating part 20, which can prevent the possibility of the tab 400 contacting the cover plate 10 through the gap between the insulating cap 30 and the insulating part 20, ensuring the insulation performance. It should be noted that the third direction refers to the thickness direction of the insulating cap 30, and the first direction, the second direction, and the third direction are perpendicular to each other pairwise.

[0054] Furthermore, as Figure 2 shown, 0.8 ≤ f / (g + h) ≤ 1. It should be noted that in the third direction, the size f of the clamping portion 301, the size g of the cover plate 10, and the size h of the insulating part 20 need to satisfy a certain relationship, that is, the ratio of the size f of the clamping portion 301 to the sum of the size g of the cover plate 10 and the size h of the insulating part 20 is 0.8 - 1. This can make the bottom surface of the clamping portion 30 lower than the lower surface of the cover plate 10, slightly higher than or flush with the lower surface of the insulating part 20, which can prevent the possibility of the tab 400 contacting the cover plate 10 through the gap between the insulating cap 30 and the insulating part 20, ensuring the insulation performance.

[0055] It should be noted that as Figure 4 and Figure 5As shown, the insulating cap 30 further includes: a reinforcing portion 303, and the reinforcing portion 303 is connected to the inner side of the clamping portion 301. The reinforcing portion 303 is an integral part of the insulating cap 30, which mainly plays a reinforcing role and can enhance the structural strength of the insulating cap 30. The reinforcing portion 303 is connected to the inner side of the clamping portion 301, so that the reinforcing portion 303 can strengthen the structural strength of the clamping portion 301 and maintain the elastic deformation of the clamping portion 301, thereby enabling the clamping portion 301 to better play the role of clamping and mating. In addition, since the reinforcing portion 303 is connected to the inner side of the clamping portion 301, the reinforcing portion 303 can be located within the cavity 306, which can prevent the reinforcing portion 303 from occupying the space outside the clamping portion 301, thus increasing the overall volume of the insulating cap 30 and making it inconvenient for the installation and setting of the insulating cap 30.

[0056] In addition, as Figure 4 and Figure 5 shown, the reinforcing portion 303 is configured as a hooked structure. By configuring the reinforcing portion 303 as a hooked structure, the structural strength of the reinforcing portion 303 itself can be enhanced, thereby ensuring the reinforcing effect of the reinforcing portion 303, improving the stability during the clamping of the clamping portion 301, increasing the service life of the insulating cap 30, and increasing the number of repeated uses. In addition, this can also reduce the volume of the reinforcing portion 303, thereby reducing the occupied space of the reinforcing portion 303. It should be noted that the shape of the reinforcing portion 303 is not limited to the hooked shape and can also be a solid thickened section.

[0057] Optionally, as Figure 5 and Figure 6 shown, a chamfer structure 304 inclined inward is provided at the connection between the reinforcing portion 303 and the clamping portion 301. The setting of the chamfer structure 304 reduces the force applied to the insulating cap 30, improves the alignment accuracy of the assembly, and simplifies the assembly process. The dimensions of the chamfer structure 304 are such that the clamping portion 301 can just be clamped in the through hole 200. During assembly, the insulating cap 30 is erected perpendicular to the cover plate 10, and the clamping portion 301 is clamped above the through hole 200 through the chamfer structure 304. A force in the third direction is applied above the top plate of the insulating cap 30, and the clamping portion 301 is clamped into the through hole 200 and fixed by using the hammer pressing method. It should be noted that the width of the chamfer structure 304 in the first direction and the length in the second direction are both less than or equal to the width and length of the through hole 200.

[0058] It should be noted that, as Figure 7 and Figure 8As shown, the insulating cap 30 further includes: a second limiting portion 305, which is connected to one end of the clamping portion 301 away from the main body portion 300, and the second limiting portion 305 is in limiting cooperation within the through hole 200. Specifically, the second limiting portion 305 is in limiting cooperation with the side of the insulating member 20 away from the cover plate 10. The second limiting portion 305 is also a component of the insulating cap 30, which can mainly limit the displacement of the insulating cap 30 within the through hole 200. Connecting the second limiting portion 305 to one end of the clamping portion 301 away from the main body portion 300, and the second limiting portion 305 is in limiting cooperation with the side of the insulating member 20 away from the cover plate 10. In this way, the first limiting portion 302 and the second limiting portion 305 act together to maintain the relative position between the insulating cap 30 and the cover plate 10, making the connection between the insulating cap 30 and the cover plate 10 more stable and reliable.

[0059] Specifically, the clamping portion 301 of the insulating cap 30 thickens along the opposite direction of the cavity 306 to form a three-sided buckle structure. The buckle is the second limiting portion 305. There is still a first limiting portion 302 on the main body portion 300. The outer edge length and width of the main body portion 300 fit the through hole 200. The clamping portion 301 has an interference amount. The clamping portion 301 deforms through force application and embeds and passes through the through hole 200. The first limiting portion 302 is located on the outer side surface of the cover plate 10. The three-sided buckle is located below the inner side surface of the insulating member 20 to isolate the battery cell 40. The insulating cap 30 is semi-fixed on the cover plate 10. In this shape, the insulating cap 30 is not easy to fall off and has excellent insulating performance. Moreover, the movement gap of the insulating cap 30 in the third movement direction at the through hole 200 provides a channel for the escape of gas. The gas generated during the use of the battery 2 can enter the insulating cap 30, thereby slowing down the expansion of the housing.

[0060] Among them, as Figure 3 、 Figure 4 and Figure 8 shown, in the direction perpendicular to the first direction, the cross-sectional shape of the clamping portion 301 is one of a rectangle, a circle or an ellipse. In the direction perpendicular to the first direction, the cross-sectional shape of the clamping portion 301 can be a rectangle, a circle or an ellipse. The structures of the rectangle and the circle are simple and convenient for processing and setting, while the ellipse is more convenient for the interference fit of the clamping portion 301 and the through hole 200 in the second direction. Of course, all of these can ensure the clamping and mating function of the clamping portion 301 and can make the connection between the insulating cap 30 and the cover plate 10 firm and reliable.

[0061] In addition, as Figure 3 、 Figure 4 and Figure 8As shown, the clamping portion 301 is configured as an elastic structural member. The elastic structural member can play a role in elastic adjustment. By configuring the clamping portion 301 as an elastic structural member, the clamping portion 301 can undergo a certain deformation at this time, facilitating the clamping of the clamping portion 301 within the through hole 200. This facilitates the installation and setting of the clamping portion 301. Additionally, after the clamping portion 301 is clamped within the through hole 200, the clamping portion 301 returns to its original state, enabling the clamping portion 301 to be more firmly clamped within the through hole 200, thereby ensuring that the insulating cap 30 is disposed within the through hole 200.

[0062] It should be noted that, as Figure 9 shown, the cover plate assembly 1 further includes: a cap 50, and the cap 50 is disposed on the outer side of the insulating cap 30. The cap 20 is a component of the cover plate assembly 1, which can mainly protect the battery 2 from damage by the external environment and ensure the safety of the electrical equipment. Among them, the material of the cap 50 can be a metal material such as aluminum.

[0063] Of course, as Figure 2 , Figure 5 and Figure 7 shown, the insulating member 20 is one of a polypropylene plastic member, a polystyrene plastic member, and an acrylonitrile-butadiene-styrene copolymer plastic member, or the insulating member 20 is one of a neoprene rubber member and an ethylene-propylene rubber member. Plastic members have good insulation, light weight, chemical stability, and low cost. Rubber members have excellent insulation, durability, and comfort. By setting the insulating member 20 as one of a polypropylene plastic member, a polystyrene plastic member, and an acrylonitrile-butadiene-styrene copolymer plastic member, or the insulating member 20 is one of a neoprene rubber member and an ethylene-propylene rubber member, the structure of the insulating member 20 can be more in line with the actual working conditions, enabling it to have good insulation performance and the ability of elastic deformation.

[0064] According to the battery 2 of an embodiment of the present utility model, it includes: a battery cell 40, the battery cell 40 is provided with a tab 400, the cover plate assembly 1 of the battery 2 described in the above embodiment, a cavity 306 is formed in the insulating cap 30, and at least a part of the tab 400 extends into the cavity 306. The battery cell 40 is the core component inside the battery 2 and can play the role of storing electrical energy. The tab 400 can play roles such as connection, conduction, and sealing. A cavity 306 is formed in the insulating cap 30. It can be understood that the insulating cap 30 presents a sunken accommodation groove structure, and such a sunken accommodation groove structure can form the cavity 306. The insulating cap 30 is buckled on the side of the cover plate 10 away from the insulating member 20, so that the tab 400 of the battery cell 40 can extend into the cavity 306 through the through hole 200, thereby the tab 400 can be welded and transferred to the outer cavity side of the cover plate 10, reducing the redundant space between the battery cell 40 and the cover plate 10, increasing the proportion of the battery cell 40 in the battery 2 housing, improving the space utilization rate of the battery 2. In addition, the insulating cap 30 can prevent the tab 400 from contacting the cover plate 10 and the cap 50, realizing the insulation function.

[0065] Specifically, as Figure 1 , Figure 2 , Figure 5 and Figure 7 shown, there is one insulating cap 30, or there are at least two insulating caps 30, and at least two insulating caps 30 are arranged at intervals. The number of insulating caps 30 can be one or at least two. When the number of insulating caps 30 is one, a cavity 306 is formed in the insulating cap 30, and at least a part of the tab 400 extends into the cavity 306. When the number of insulating caps 30 is at least two, at least two insulating caps 30 are arranged at intervals, and cavities 306 are respectively formed, and at least a part of the tab 400 extends into the cavities 306 of at least two insulating caps 30.

[0066] In addition, as Figure 9 shown, the cover plate assembly 1 further includes: a cap 50. When there are at least two insulating caps 30, there is one cap 50, and one cap 50 covers the outside of at least two insulating caps 30, or there are at least two caps 50, and at least two caps 50 respectively cover the outside of at least two insulating caps 30 in one-to-one correspondence. The cap 20 is a component of the cover plate assembly 1, which can mainly protect the battery 2 from damage by the external environment and ensure the safety of the electrical equipment. When there are at least two insulating caps 30, the cap 50 can be set to one or at least two. When there is one cap 50, one cap 50 covers the outside of at least two insulating caps 30, and at least two insulating caps 30 are arranged under one cap 50. When there are at least two caps 50, at least two caps 50 respectively cover the outside of at least two insulating caps 30 in one-to-one correspondence, and at least two insulating caps 30 are respectively arranged under at least two caps 50.

[0067] The electrical equipment according to the embodiment of the present utility model includes: the battery 2 described in the above embodiment.

[0068] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. 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. Therefore, it should not be construed as a limitation to the present utility model.

[0069] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. In the description of the present utility model, the first feature being "above", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the first feature has a higher horizontal height than the second feature.

[0070] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0071] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A cover plate assembly (1) of a battery (2), characterized in that: Comprising: A cover plate (10), the cover plate (10) being provided with a through hole (200); An insulating cap (30), the insulating cap (30) being covered on the cover plate (10), and at least part of the insulating cap (30) being clamped in the through hole (200).

2. The cover plate assembly (1) of the battery (2) according to claim 1, characterized in that: The insulating cap (30) includes: a main body portion (300), a clamping portion (301), and a first limiting portion (302). The clamping portion (301) is clamped in the through hole (200), the first limiting portion (302) is connected between the main body portion (300) and the clamping portion (301), and the first limiting portion (302) is in limiting cooperation with one side of the cover plate (10).

3. The cover plate assembly (1) of the battery (2) according to claim 2, characterized in that: In a first direction, the size of the clamping portion (301) is a, the size of the through hole (200) is b, the size of the first limiting portion (302) is c, and the relationship among a, b, and c is: c > a > b, 1.1 < c / b < 1.3, 1.01 < a / b < 1.2, where the first direction is the width direction of the insulating cap (30).

4. The cover plate assembly (1) of the battery (2) according to claim 3, characterized in that: In a second direction, the size of the clamping portion (301) is d, the size of the through hole (200) is e, the projected area of the clamping portion (301) on a horizontal plane is s1, the projected area of the through hole (200) on a horizontal plane is s2, the relationship between d and e is: d = e, and the relationship between s1 and s2 is: 1 < s1 / s2 < 1.5, where the second direction is the length direction of the insulating cap (30), and the second direction is perpendicular to the first direction.

5. The cover plate assembly (1) of the battery (2) according to claim 3, characterized in that: In a second direction, the size of the clamping portion (301) is d, the size of the through hole (200) is e, and the relationship between d and e is: 1.01 < d / e < 1.2, where the second direction is the length direction of the insulating cap (30), and the second direction is perpendicular to the first direction.

6. The cover plate assembly (1) of the battery (2) according to claim 2, characterized in that: In a third direction, the size of the clamping portion (301) is f, the size of the cover plate (10) is g, and the relationship between f and g is: g < f, where the third direction is the thickness direction of the insulating cap (30), and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

7. The cover plate assembly (1) of the battery (2) according to claim 2, characterized in that: The insulating cap (30) further includes: a reinforcing portion (303), the reinforcing portion (303) being connected to the inner side of the clamping portion (301).

8. The cover plate assembly (1) of the battery (2) according to claim 7, characterized in that: The reinforcing portion (303) is configured as a hooked structure.

9. The cover plate assembly (1) of the battery (2) according to claim 7, characterized in that: A chamfer structure (304) inclined inward is provided at the connection between the reinforcing portion (303) and the clamping portion (301).

10. The cover plate assembly (1) of the battery (2) according to claim 2, characterized in that: The insulating cap (30) further includes: a second limiting portion (305), the second limiting portion (305) being connected to the end of the clamping portion (301) away from the main body portion (300), and the second limiting portion (305) being in limiting cooperation within the through hole (200).

11. The cover plate assembly (1) of the battery (2) according to claim 2, characterized in that: In a direction perpendicular to the first direction, the cross-sectional shape of the clamping portion (301) is one of a rectangle, a circle, or an ellipse.

12. The cover plate assembly (1) of the battery (2) according to claim 2, characterized in that: The clamping portion (301) is configured as an elastic structural member.

13. The cover plate assembly (1) of the battery (2) according to claim 1, characterized in that: Further comprising: A cap (50), the cap (50) being covered on the outside of the insulating cap (30).

14. A battery (2), characterized in that: Comprising: A battery cell (40), wherein the battery cell (40) is provided with a tab (400); In the cover plate assembly (1) of the battery (2) according to any one of claims 1 to 13, a cavity (306) is formed in the insulating cap (30), and the pole ear (400) at least partially extends into the cavity (306).

15. The battery (2) according to claim 14, characterized in that The insulating cap (30) is one; or There are at least two insulating caps (30), and at least two insulating caps (30) are arranged at intervals.

16. The battery (2) according to claim 15, characterized in that The cover plate assembly (1) further comprises: a cover cap (50), wherein when there are at least two insulating caps (30), there is one cover cap (50), and the one cover cap (50) is arranged on the outside of the at least two insulating caps (30); or There are at least two cover caps (50), and the at least two cover caps (50) are arranged on the outside of the at least two insulating caps (30) in a one-to-one correspondence.

17. An electrical equipment, characterized in that: include: The battery (2) according to any one of claims 14 to 16.

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