Cover plate assembly, battery and electric device

Abstract

The utility model discloses a cover plate assembly, battery and electric device, said cover plate assembly includes: cover plate body, conducting strip, leading-out piece, pole and insulation structure, cover plate body has first surface and second surface opposite to each other, the second surface is used for facing the inside of battery, the cover plate body is provided with pole hole. The conducting strip is arranged on the first surface, the leading-out strip is arranged on the second surface and is suitable for being connected with a battery cell of the battery, the pole penetrates through the pole hole, and two ends of the pole are respectively connected with the conducting strip and the leading-out strip. And the insulation structure is arranged on the cover plate body and is used for separating the cover plate body from the pole, the conducting strip and the leading-out strip. Wherein the pole and the conducting strip are integrally processed and formed parts. The process step of connecting the pole and the conducting strip is omitted, the assembly process is simplified, the assembly efficiency can be improved, and the process cost of connecting the pole and the conducting strip can be saved. And the manufacturing cost of independently manufacturing the pole and the conducting strip can be saved, so that the manufacturing cost of the cover plate assembly is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a cover plate assembly, a battery and an electrical device. Background Art

[0002] The cover plate assembly of a battery is an important part of the battery structure. It not only protects the components inside the battery from the external environment, but also ensures the electrical connection and sealing of the battery.

[0003] In the related art, the connection process between the pole column, the conductive sheet and the lead-out sheet is cumbersome and costly, and there is room for improvement. Summary of the Utility Model

[0004] 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, the assembly process of the cover plate assembly is simplified, and the manufacturing cost of the cover plate assembly can be reduced.

[0005] Another object of the utility model is to provide a battery.

[0006] Still another object of the utility model is to provide an electrical device.

[0007] The cover plate assembly of a battery according to an embodiment of the utility model includes: a cover plate body having opposite first and second surfaces, the second surface being adapted to face the inside of the battery, and a pole column hole being provided on the cover plate body; a conductive sheet provided on the first surface; a lead-out sheet provided on the second surface and adapted to be connected to the battery cell; a pole column passing through the pole column hole, and two ends of the pole column being respectively connected to the conductive sheet and the lead-out sheet; an insulating structure provided on the cover plate body for spacing apart the cover plate body from the pole column, the conductive sheet and the lead-out sheet; wherein, the pole column and the conductive sheet are integrally processed and formed parts.

[0008] For the cover plate assembly of a battery according to an embodiment of the utility model, by designing the pole column and the conductive sheet as integrally processed and formed parts, after arranging the insulating structure on the cover plate body during assembly, the pole column is inserted into the pole column hole from the first surface side, and the pole column is connected to the lead-out sheet on the second surface side, then the assembly of the cover plate assembly can be completed, omitting the process steps of connecting the pole column and the conductive sheet, simplifying the assembly process, improving the assembly efficiency, and saving the process cost of connecting the pole column and the conductive sheet. Moreover, the pole column and the conductive sheet are integrally processed and formed, which can save the manufacturing cost of separately manufacturing the pole column and the conductive sheet, thereby reducing the manufacturing cost of the cover plate assembly. The structural part of the cooperation between the pole column and the conductive sheet can also be omitted, thereby reducing the manufacturing material cost of the cover plate assembly.

[0009] In some embodiments, the insulating structure includes: a sealing ring that surrounds the pole column. The sealing ring includes: an inner ring that is located within the pole column hole; and a side ring that connects to the edge of the inner ring, and the side ring is sandwiched between the conductive sheet and the cover body.

[0010] In some embodiments, the insulating structure further includes: a first plastic plate that is located between the conductive sheet and the cover body. A first avoidance hole that is opposite to the pole column hole is provided on the first plastic plate, and the pole column passes through the first avoidance hole.

[0011] In some embodiments, the side ring is located within the first avoidance hole, and in a natural state, the thickness of the side ring is greater than the thickness of the first plastic plate.

[0012] In some embodiments, the cover body is provided with a first positioning groove on the first surface, and the first plastic plate is located within the first positioning groove; a second positioning groove is formed on a side of the first plastic plate that faces away from the cover body, and the conductive sheet is located within the second positioning groove.

[0013] In some embodiments, a groove is formed at the edge of the first plastic plate.

[0014] In some embodiments, the insulating structure further includes: a second plastic plate that is located between the lead-out sheet and the cover body. A second avoidance hole that is opposite to the pole column hole is provided on the second plastic plate, and the pole column passes through the second avoidance hole.

[0015] In some embodiments, a positioning structure is provided between the second plastic plate and at least one of the cover body and the lead-out sheet.

[0016] In some embodiments, the conductive sheet and the pole column are integrally stamped parts or integrally upset parts.

[0017] In some embodiments, the cover body is strip-shaped, and the conductive sheet is strip-shaped and consistent with the length direction of the cover body.

[0018] The battery according to an embodiment of the present invention includes: a housing provided with an opening; an electric core disposed within the housing; a cover assembly of the battery according to any one of the above, the cover assembly being located at the opening and connected to the housing, and the lead-out sheet being electrically connected to the electric core.

[0019] By providing the above cover assembly, the battery according to an embodiment of the present invention can improve the assembly efficiency of the battery and reduce the manufacturing cost of the battery.

[0020] The electrical device according to an embodiment of the present utility model includes the battery described above.

[0021] By providing the above battery, the manufacturing cost of the electrical device can be saved according to the electrical device of an embodiment of the present utility model.

[0022] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become apparent from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is an exploded view of the structure of the cover plate assembly of the battery according to an embodiment of the present utility model;

[0025] Figure 2 is a top view of the cover plate assembly according to an embodiment of the present utility model;

[0026] Figure 3 is according to Figure 2 the A-A sectional view of the example shown;

[0027] Figure 4 is a perspective view of the conductive sheet and the pole post according to an embodiment of the present utility model;

[0028] Figure 5 is another top view of the cover plate assembly according to an embodiment of the present utility model;

[0029] Figure 6 is according to Figure 5 the B-B sectional view of the example shown;

[0030] Figure 7 is a top view of the first plastic plate according to an embodiment of the present utility model;

[0031] Figure 8 is a top view of the sealing ring and the first plastic plate according to an embodiment of the present utility model;

[0032] Figure 9 is according to Figure 8 the C-C sectional view of the example shown;

[0033] Figure 10 is a connection schematic diagram of the pole post, the conductive sheet and the lead-out sheet according to an embodiment of the present utility model;

[0034] Figure 11 is a connection schematic diagram of the pole post, the conductive sheet and the lead-out sheet from a top view angle according to an embodiment of the present utility model;

[0035] Figure 12 is based on Figure 11 the D-D cross-sectional view of the example shown

[0036] Reference numerals:

[0037] Cover plate assembly 100;

[0038] Cover plate body 1; first surface 11; second surface 12; pole hole 13; first positioning groove 14;

[0039] Conductive sheet 2;

[0040] Lead-out sheet 3; third positioning groove 31;

[0041] Pole 4;

[0042] Insulating structure 5; sealing ring 51; inner ring 511; side ring 512; thickness h1 of the side ring; first plastic plate 52; thickness h2 of the first plastic plate; first avoidance hole 521; second positioning groove 522; groove 523; second plastic plate 53; second avoidance hole 531; first positioning protrusion 532;

[0043] Fastener 6. Specific embodiments

[0044] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0046] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] Reference is made below to Figures 1 - 12 describe a cover plate assembly 100 of a battery according to an embodiment of the present utility model.

[0048] As Figures 1 - 3 shown, a cover plate assembly 100 of a battery according to an embodiment of the present utility model includes: a cover plate body 1, a conductive sheet 2, a lead-out sheet 3, a pole column 4, and an insulating structure 5. The cover plate body 1 has opposite first and second surfaces 11 and 12, and the second surface 12 is used to face the inside of the battery. A pole column hole 13 is provided on the cover plate body 1. The conductive sheet 2 is provided on the first surface 11, the lead-out sheet 3 is provided on the second surface 12 and is adapted to be connected to the battery cell, the pole column 4 is inserted into the pole column hole 13, and both ends of the pole column 4 are respectively connected to the conductive sheet 2 and the lead-out sheet 3. The insulating structure 5 is provided on the cover plate body 1, and the insulating structure 5 is used to space apart the cover plate body 1 from the pole column 4, the conductive sheet 2, and the lead-out sheet 3. Among them, as Figure 4 shown, the pole column 4 and the conductive sheet 2 are integrally formed parts.

[0049] The cover plate body 1 is the main component of the cover plate assembly 100. The cover plate body 1 plays a role in support and protection. The cover plate body 1 provides sufficient mechanical strength and electrical insulation, isolates the inside and outside of the battery, and improves the use safety of the battery using the cover plate assembly 100 according to the embodiment of the present utility model.

[0050] The conductive sheet 2 is provided on the first surface 11 of the cover plate facing away from the inside of the battery. The conductive sheet 2 is used for electrically connecting to external devices of the battery, such as connecting to a bus bar. The lead-out sheet 3 is provided on the second surface 12 of the cover plate facing the inside of the battery. The lead-out sheet 3 is used for electrically connecting to the inside of the battery, such as connecting to the tab of the battery cell. The pole column 4 penetrates the cover plate body 1 to connect the conductive sheet 2 and the lead-out sheet 3, and the lead-out sheet 3, the pole column 4, and the conductive sheet 2 form a current output path.

[0051] To ensure that there is sufficient connection area for the electrical connection between the conductive sheet 2 and the external components of the battery, the shape of the conductive sheet 2 usually conforms to the shape of the cover body 1, so that the conductive sheet 2 can occupy sufficient area. Optionally, the cover body 1 is strip-shaped, and the conductive sheet 2 is strip-shaped and consistent with the length direction of the cover body 1. Such a strip-shaped cover body 1 is suitable for being arranged on a flat battery, which is convenient for stacking the batteries during battery integration. At this time, setting the conductive sheet 2 as a strip-shaped one consistent with the length direction of the cover body 1 is beneficial to ensuring that the conductive sheet 2 has sufficient contact length with the external components and ensuring the reliability of the electrical connection.

[0052] The insulating structure 5 is used to space apart the cover body 1 and the pole column 4, the cover body 1 and the conductive sheet 2, and the cover body 1 and the lead-out sheet 3. That is to say, the cover body 1 is not charged, and the sealing treatment of the current output path can be achieved. Thus, the electrical insulation of the cover body 1 is improved, and the use safety of the battery of the cover assembly 100 adopting the embodiment of the present utility model is improved.

[0053] In the related art, the pole column is respectively welded to the conductive sheet and the lead-out sheet. During the assembly of the pole column and the cover body, two weldings are required to complete the assembly of the cover assembly, the process is cumbersome and the cost is relatively high; moreover, the pole column, the conductive sheet and the lead-out sheet are separately manufactured and then assembled with each other, which will also increase the manufacturing cost.

[0054] In the embodiment of the present utility model, the pole column 4 and the conductive sheet 2 are designed as an integrally formed part. After arranging the insulating structure 5 on the cover body 1 during assembly, the pole column 4 is inserted into the pole column hole 13 from the side of the first surface 11, and the pole column 4 is connected to the lead-out sheet 3 on the side of the second surface 12, then the assembly of the cover assembly 100 can be completed, saving the process steps of connecting the pole column 4 and the conductive sheet 2, saving the process cost of welding the pole column 4 and the conductive sheet 2, and reducing the manufacturing cost of the cover assembly 100. And the pole column 4 and the conductive sheet 2 are integrally formed, which can save the manufacturing cost of separately manufacturing the pole column 4 and the conductive sheet 2, and further reduce the manufacturing cost of the cover assembly 100.

[0055] In addition, designing the pole column 4 and the conductive sheet 2 as an integrally formed part can also save the structural part for the cooperation between the pole column 4 and the conductive sheet 2, reduce the material cost of the pole column 4 and / or the conductive sheet 2, and further reduce the manufacturing cost of the cover assembly 100. Exemplarily, in the cover assembly 100 of the embodiment of the present utility model, since the pole column 4 and the conductive sheet 2 are designed as an integrally formed part, the pole column flange of the pole column 4 for cooperating with the conductive sheet 2 is cancelled, thereby reducing the material cost of the pole column 4.

[0056] According to the cover plate assembly 100 of the embodiments of the present utility model, by designing the pole column 4 and the conductive sheet 2 as an integrally processed and formed part, after arranging the insulating structure 5 on the cover plate body 1 during assembly, the pole column 4 is inserted into the pole column hole 13 from the side of the first surface 11, and the pole column 4 is connected to the lead-out sheet 3 on the side of the second surface 12, then the assembly of the cover plate assembly 100 can be completed. The process steps of connecting the pole column 4 and the conductive sheet 2 are omitted, the assembly process is simplified, the assembly efficiency can be improved, and the process cost of connecting the pole column 4 and the conductive sheet 2 can also be saved. Moreover, the pole column 4 and the conductive sheet 2 are integrally processed and formed, the manufacturing cost of separately manufacturing the pole column 4 and the conductive sheet 2 can be saved, thereby reducing the manufacturing cost of the cover plate assembly 100. The structural parts of the pole column 4 and the conductive sheet 2 cooperating with each other can also be omitted, thereby reducing the manufacturing material cost of the cover plate assembly 100.

[0057] In some embodiments of the present utility model, as Figure 1 and Figure 3 shown, the insulating structure 5 includes: a sealing ring 51, and the sealing ring 51 is arranged around the pole column 4. As Figure 6 shown, the sealing ring 51 includes: an inner ring 511 and a side ring 512. The inner ring 511 is located in the pole column hole 13, and the side ring 512 is connected to the edge of the inner ring 511, and the side ring 512 is clamped between the conductive sheet 2 and the cover plate body 1.

[0058] The sealing ring 51 is arranged around the pole column 4 and is arranged in the pole column hole 13. The sealing ring 51 can separate the cover plate body 1 from the pole column 4, improving the electrical safety of the cover plate body 1.

[0059] The sealing ring 51 not only includes the inner ring 511 arranged in the pole column hole 13, but also includes the side ring 512 connected to the edge of the inner ring 511 and extending radially around the inner ring 511. The side ring 512 is connected to one end of the inner ring 511 close to the conductive sheet 2, so that the side ring 512 is clamped between the conductive sheet 2 and the cover plate body 1. Compared with only setting the inner ring, by setting the side ring 512, the contact area between the sealing ring 51 and the conductive sheet 2 can be increased, thereby improving the sealing effect of the sealing ring 51 between the conductive sheet 2 and the cover plate body 1.

[0060] In the related art, the side ring is arranged at one end of the inner ring 511 close to the lead-out sheet, and the lead-out sheet and the cover plate body sandwich the side ring. However, the lead-out sheet and the cover plate body can move relative to each other during the assembly process, which is likely to cause displacement, resulting in deformation and displacement of the sealing ring, thereby destroying the sealing effect of the sealing ring.

[0061] Since the conductive sheet 2 and the pole column 4 are integrally formed, the connection position between the conductive sheet 2 and the pole column 4 has stable structure. In the present utility model, the side ring 512 is connected to one end of the inner ring 511 close to the conductive sheet 2, and the situation that the conductive sheet 2 and the pole column 4 are displaced to cause the sealing ring 51 to deform and shift, resulting in poor sealing of the sealing ring 51, will not occur, thus improving the sealing reliability of the sealing ring 51.

[0062] In some embodiments of the present utility model, as Figure 1 and Figure 3 shown, the insulating structure 5 further includes: a first plastic plate 52, the first plastic plate 52 is located between the conductive sheet 2 and the cover body 1, as Figure 1 and Figure 6 shown, a first avoidance hole 521 facing the pole column hole 13 is provided on the first plastic plate 52, and the pole column 4 passes through the first avoidance hole 521.

[0063] The first plastic plate 52 is arranged on the first surface 11 of the cover body 1 facing away from the inside of the battery. The first plastic plate 52 spaces apart the cover body 1 and the conductive sheet 2, improving the electrical safety of the cover body 1.

[0064] The first avoidance hole 521 is provided on the first plastic plate 52. When the pole column 4 is assembled, the pole column 4 first passes through the first avoidance hole 521 and then passes through the pole column hole 13 provided with the sealing ring 51.

[0065] In some embodiments of the present utility model, as Figure 7 and Figure 8 shown, the side ring 512 is located in the first avoidance hole 521. As Figure 9 shown, in the natural state, the thickness h1 of the side ring 512 is greater than the thickness h2 of the first plastic plate 52.

[0066] It should be noted that the thickness h1 of the first plastic plate 52 is not the overall thickness of the first plastic plate 52 along the direction from the first surface 11 to the second surface 12, but the thickness of the first plastic plate 52 where the first avoidance hole 521 is formed. Therefore, the side ring 512 will extend out of the first avoidance hole 521 along the thickness direction of the first plastic plate 52.

[0067] As Figure 9 shown, in the natural state, the edge of the side ring 512 facing the inside of the battery protrudes from the first plastic plate 52. After the conductive sheet 2 and the cover assembly 100 are assembled, the conductive sheet 2 and the side ring 512 are in interference fit, and the cover body 1 and the side ring 512 are in interference fit. The conductive sheet 2 and the cover body 1 squeeze the side ring 512, which is beneficial to improving the sealing reliability of the sealing ring 51.

[0068] In some embodiments of the present utility model, when the cover plate assembly 100 is assembled, that is, in the state where the conductive sheet 2 presses against the edge ring 512 of the cover plate body 1, the thickness of the edge ring 512 is 0.4 mm - 0.6 mm, which can ensure a good sealing effect. Exemplarily, in the state where the conductive sheet 2 presses against the edge ring 512 of the cover plate assembly 100, the thickness of the edge ring 512 is 0.5 mm.

[0069] In some embodiments of the present utility model, as Figure 1 and Figure 7 shown, the hole area of the first avoidance hole 521 is larger than the cross-sectional area of the pole column 4. As Figure 8 shown, the first avoidance hole 521 matches the edge ring 512 of the first sealing ring 51, improving the cooperation degree between the first plastic plate 52 and the sealing ring 51, which is beneficial to improving the sealing effect.

[0070] In some embodiments of the present utility model, as Figure 1 and Figure 6 shown, the cover plate body 1 is provided with a first positioning groove 14 on the first surface 11, and the first plastic plate 52 is located in the first positioning groove 14. By providing the first positioning groove 14 to accommodate the first plastic plate 52, the cooperation stability between the first plastic plate 52 and the cover plate body 1 can be improved. And by using the first positioning groove 14 to pre-position and cooperate the first plastic plate 52 and the cover plate body 1, and then fixedly connecting the first plastic plate 52 and the cover plate body 1, it is beneficial to improve the assembly efficiency and the qualified rate of the finished product.

[0071] As Figure 1 and Figure 3 shown, the first plastic plate 52 forms a second positioning groove 522 on the side facing away from the cover plate body 1, and the conductive sheet 2 is located in the second positioning groove 522. By providing the second positioning groove 522 to accommodate the conductive sheet 2, the cooperation stability between the first plastic plate 52 and the conductive sheet 2 can be improved. And after positioning the conductive sheet 2 by using the second positioning groove 522, then connecting the integrated conductive sheet 2 and the pole column 4 with the lead-out sheet 3 and the cover plate body 1, the displacement of the conductive sheet 2 and the first plastic plate 52 can be reduced, the operation can be simplified, and the assembly efficiency can be improved.

[0072] In some embodiments of the present utility model, as Figure 1 shown, a groove 523 is formed at the edge of the first plastic plate 52.

[0073] By providing the groove 523, it is convenient to pick up and place the first plastic plate 52, which is convenient for the assembly and disassembly of the cover plate assembly 100 and is beneficial to subsequent maintenance.

[0074] In some embodiments of the present utility model, as Figure 1 and Figure 3As shown, the insulation structure 5 further includes: a second plastic plate 53, which is located between the lead-out piece 3 and the cover body 1. A second avoidance hole 531 facing the pole hole 13 is provided on the second plastic plate 53, and the pole 4 passes through the second avoidance hole 531.

[0075] The second plastic plate 53 is disposed on the second surface 12 of the cover body 1 facing the interior of the battery. The second plastic plate 53 spaces apart the cover body 1 and the lead-out piece 3, improving the electrical safety of the cover body 1.

[0076] A second avoidance hole 531 is provided on the second plastic plate 53. When the pole 4 is assembled, the pole 4 first passes through the pole hole 13 and then passes through the second avoidance hole 531 to be connected to the lead-out piece 3.

[0077] In some embodiments of the present utility model, the integral structure of the conductive sheet 2 and the pole 4 first passes through the first avoidance hole 521 of the first plastic plate 52, then passes through the pole hole 13 provided with the sealing ring 51, and finally passes through the second avoidance hole 531 of the second plastic plate 53 to be connected to the lead-out piece 3, thereby completing the assembly.

[0078] In some embodiments of the present utility model, a positioning structure is provided between the second plastic plate 53 and at least one of the cover body 1 and the lead-out piece 3.

[0079] By providing the positioning structure, the cooperation stability between the second plastic plate 53 and the cover body 1, and / or the cooperation stability between the second plastic plate 53 and the lead-out piece 3 can be improved. And by positioning the second plastic plate 53 and the cover body 1 using the positioning structure, and / or positioning the second plastic plate 53 and the lead-out piece 3 using the positioning structure, and then connecting the integral conductive sheet 2 and pole 4 to the lead-out piece 3 and the cover body 1, the displacement of the lead-out piece 3, the second plastic plate 53 and the cover body 1 can be reduced, the operation can be simplified, and the assembly efficiency can be improved.

[0080] In some embodiments of the present utility model, as Figure 1 and Figure 3 shown, a third positioning groove 31 is provided on the surface of the lead-out piece 3 facing the second plastic plate 53. The second plastic plate 53 has a first positioning protrusion 532 protruding towards the lead-out piece 3, and the first positioning protrusion 532 is fitted in the third positioning groove 31, thereby improving the cooperation stability between the second plastic plate 53 and the lead-out piece 3.

[0081] In some embodiments of the present utility model, as Figure 3 shown, the cover assembly 100 further includes a fastener 6, and the fastener 6 passes through the cover body 1 and the second plastic plate 53 to fixedly connect the cover and the second plastic plate 53.

[0082] In some embodiments of the present utility model, the conductive sheet 2 and the terminal post 4 are integrally stamping-molded parts, or integrally upset-forged parts.

[0083] In some embodiments of the present utility model, as Figures 10 - 12 shown, one end of the terminal post 4 facing the interior of the battery has a uniform thickness structure, and the root flange of the terminal post 4 for cooperating with the lead-out sheet 3 is cancelled, thereby reducing the material cost of the terminal post 4. And by cancelling the root flange of the terminal post 4, the operation of the terminal post 4 passing through the cover body 1 and the insulating structure 5 is simple, which is convenient for connecting the terminal post 4 and the lead-out sheet 3, and can improve the assembly efficiency of the cover assembly 100.

[0084] In some embodiments of the present utility model, the terminal post 4 and the lead-out sheet 3 are connected by laser welding, or the terminal post 4 and the lead-out sheet 3 are connected by ultrasonic welding.

[0085] The battery according to an embodiment of the present utility model includes: a housing, an electric core, and a cover assembly 100. An opening is provided on the housing, the electric core is arranged inside the housing, the cover assembly 100 is the cover assembly 100 of any one of the above, the cover assembly 100 is located at the opening and is connected to the housing, and the lead-out sheet 3 is electrically connected to the electric core.

[0086] By providing the above cover assembly 100, the battery according to an embodiment of the present utility model can improve the assembly efficiency of the battery and reduce the manufacturing cost of the battery.

[0087] The electrical device according to an embodiment of the present utility model includes the above battery.

[0088] By providing the above battery, the electrical device according to an embodiment of the present utility model can save the manufacturing cost of the electrical device.

[0089] In some embodiments of the present utility model, the electrical device is an electric vehicle.

[0090] In the description of this specification, the description referring to terms such as "embodiment", "example", 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. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0091] 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 principles and spirits of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A cover assembly for a battery, characterized in that, include: A cover body, the cover body having a first surface and a second surface opposite to each other, the second surface is used to face the interior of the battery, and a pole hole is provided on the cover body; A conductive sheet, the conductive sheet being disposed on the first surface; A lead-out piece, the lead-out piece is provided on the second surface and is suitable for connecting to the battery cell of the battery; A pole, the pole is inserted into the pole hole, and two ends of the pole are respectively connected to the conductive sheet and the lead-out sheet; An insulating structure, the insulating structure is arranged on the cover body, and the insulating structure is used to separate the cover body from the pole, the conductive sheet, and the lead sheet; Wherein, the pole and the conductive sheet are an integrally formed part.

2. The cover plate assembly of the battery according to claim 1, characterized in that, The insulating structure comprises: a sealing ring, which is arranged around the pole, and the sealing ring comprises: An inner ring, the inner ring being located in the pole hole; A side ring is connected to the edge of the inner ring and is clamped between the conductive sheet and the cover plate body.

3. The cover plate assembly of the battery according to claim 2, wherein, The insulating structure further comprises: A first plastic plate, wherein the first plastic plate is located between the conductive sheet and the cover plate body, and a first avoidance hole facing the pole hole is provided on the first plastic plate, and the pole passes through the first avoidance hole.

4. The cover plate assembly of the battery according to claim 3, characterized in that, The edge ring is located in the first avoidance hole, and in a natural state, the thickness of the edge ring is greater than the thickness of the first plastic plate.

5. The cover assembly of the battery according to claim 3, wherein, The cover body is provided with a first positioning groove on the first surface, and the first plastic plate is located in the first positioning groove; A second positioning groove is formed on the first plastic plate at a side away from the cover plate body, and the conductive sheet is located in the second positioning groove.

6. The cover plate assembly of the battery according to claim 5, characterized in that, A groove is formed at the edge of the first plastic plate.

7. The cover plate assembly of the battery according to claim 1, characterized in that, The insulating structure further comprises: The second plastic plate is located between the lead-out plate and the cover plate body, and the second plastic plate is provided with a second avoidance hole facing the pole hole, and the pole is penetrated by the second avoidance hole.

8. The cover plate assembly of the battery according to claim 7, characterized in that, A positioning structure is provided between the second plastic plate and at least one of the cover plate body and the lead-out piece.

9. The cover plate assembly of the battery according to any one of claims 1-8, characterized in that, The conductive sheet and the pole are an integral stamped part, or an integral pressed part.

10. The cover plate assembly of the battery according to any one of claims 1-8, characterized in that, The cover plate body is in the shape of an elongated strip, and the conductive sheet is in the shape of an elongated strip consistent with the length direction of the cover plate body.

11. A battery, characterized in that, include: A shell, wherein the shell is provided with an opening; A battery cell, wherein the battery cell is disposed in the housing; According to the cover plate assembly of the battery according to any one of claims 1 to 10, the cover plate assembly is located at the opening and connected to the shell, and the lead-out piece is electrically connected to the battery cell.

12. An electrical device, characterized in that, Comprising a battery according to claim 11.

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