Cover plate assembly and battery with same

Abstract

The utility model discloses a cover plate assembly and a battery with the cover plate assembly. The cover plate assembly comprises a cover plate and a cover plate, the conductive terminal is connected with the cover plate in a riveted mode, a connecting groove is formed in the conductive terminal, and one side, in the thickness direction of the cover plate, of the connecting groove is open; and the pole comprises a pole body, and one end of the pole body extends into the connecting groove and is connected with the conductive terminal in a welding manner. According to the cover plate assembly provided by the utility model, the conductive terminal is riveted with the cover plate, the conductive terminal is provided with the connecting groove, and the pole body of the pole extends into the connecting groove and is welded with the conductive terminal, so that the connection and fixation of the electrode terminal and the cover plate are more stable and reliable, and the assembly procedures of the electrode terminal and the pole are fewer; therefore, the overall structural stability and reliability of the cover plate assembly are better, the operation of the battery is more stable and reliable, and the production efficiency is higher.

Description

Technical Field

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

[0002] In the related art, when assembling the pole and the cover plate in the battery, the pole and the electrode terminal are often required to be riveted first and then welded to achieve good sealing of the battery and reliability of connection and fixation, which makes the process more complicated and the assembly more inconvenient, reducing the production efficiency of the battery. When assembling the electrode terminal and the cover plate, there is a situation where the fixation is not firm, which reduces the stability and reliability of the battery. Utility Model Content

[0003] The present invention is based on the discovery of the following facts and problems made by the inventor of the present application:

[0004] When the pole and the electrode terminal are assembled to the cover, the pole and the electrode terminal need to be riveted to fix the electrode terminal and the pole to the cover, and the pole is then welded to the electrode terminal so that the connection between the pole and the electrode terminal has a good sealing effect. There are many assembly steps and the steps are complicated, which reduces the production efficiency of the battery. Since the electrode terminal has a large electrical connection surface, the electrode terminal is fixed to the cover by welding and riveting with the pole, and there is a situation where the fixation is not firm, which makes the assembly and fixation stability and reliability of the electrode terminal on the cover poor, thereby reducing the stability and reliability of the battery.

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a cover plate assembly, which can make the connection and fixation between the electrode terminal and the cover plate more stable and reliable, reduce the assembly process of the electrode terminal and the pole, and improve the production efficiency of the battery.

[0006] The utility model also provides a battery with the cover plate assembly.

[0007] According to the first aspect of the utility model, the cover plate assembly includes: a cover plate; a conductive terminal, which is riveted to the cover plate and formed with a connecting groove, and the connecting groove is open on one side along the thickness direction of the cover plate; a pole, the pole includes a column, one end of the column extends into the connecting groove and is welded to the conductive terminal.

[0008] According to the cover plate assembly of the utility model, the conductive terminal is riveted to the cover plate, the conductive terminal is provided with a connecting groove, the column of the pole extends into the connecting groove and is welded to the conductive terminal, so that the connection and fixation between the electrode terminal and the cover plate is more stable and reliable, and the assembly steps of the electrode terminal and the pole are reduced, thereby making the overall structural stability and reliability of the cover plate assembly better, making the battery operation more stable and reliable, and the production efficiency higher.

[0009] In some embodiments of the utility model, the conductive terminal includes: a connecting body and a connecting plate, the connecting body is a hollow ring; the connecting plate is arranged in the cavity of the connecting body, the connecting plate cooperates with the connecting body to define the connecting groove, and the column is welded to the connecting plate.

[0010] In an embodiment of the present invention, the thickness of the connecting plate may range from 0.8 mm to 1.5 mm.

[0011] In one embodiment of the utility model, the conductive terminal also includes: a first ring, the first ring is connected to one end of the opening of the connecting body facing away from the connecting groove, the first ring extends radially outwardly of the connecting body and extends circumferentially of the connecting body in a ring shape; a second ring, the second ring is connected to the other end of the opening of the connecting body having the connecting groove, the second ring extends radially outwardly of the connecting body and extends circumferentially of the connecting body in a ring shape, and the first ring and the second ring are respectively arranged on both sides of the thickness direction of the cover plate.

[0012] In some embodiments of the present invention, the conductive terminal is an integral piece.

[0013] In some embodiments of the present invention, the inner peripheral wall of the connecting groove and the peripheral edge of the connecting groove are rounded.

[0014] In some embodiments of the utility model, the pole also includes a bottom plate, which is connected to the other end of the column, extends radially outward from the column and extends circumferentially from the column in a ring shape, is suitable for being connected to the pole ear of the electrode assembly, and is an integral part of the column.

[0015] In one embodiment of the utility model, the column includes: a welding portion, which is arranged at one end of the column and is welded to the conductive terminal; a connecting portion, which extends in a ring shape along the circumference of the column, one end of the connecting portion is connected to the welding portion, and the other end of the connecting portion is connected to the base plate.

[0016] In some examples of the present invention, the conductive terminal includes a connecting plate, the welding portion of the column is welded to the connecting plate, and the thickness of the welding portion is greater than or equal to the thickness of the connecting plate.

[0017] The battery according to the second aspect of the utility model comprises:

[0018] A housing having a receiving cavity with one side open;

[0019] An electrode assembly, the electrode assembly is disposed in the accommodating cavity, and the electrode assembly has a pole ear;

[0020] According to the cover plate assembly of the first aspect of the utility model, the cover plate assembly covers the opening of the accommodating cavity, and the pole is welded to the pole ear.

[0021] According to the battery of the utility model, by setting the cover plate assembly of the first aspect mentioned above, the conductive terminal is riveted to the cover plate, the conductive terminal is provided with a connecting groove, the column of the electrode column extends into the connecting groove and is welded to the conductive terminal, so that the connection and fixation between the electrode terminal and the cover plate is more stable and reliable, and the assembly steps of the electrode terminal and the electrode column are reduced, thereby making the overall structural stability and reliability of the cover plate assembly better, making the battery operation more stable and reliable, and the production efficiency higher.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a battery according to an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 A cross-sectional view at AA shown in FIG.

[0025] Figure 3 yes Figure 2 A schematic diagram of a partial enlargement of point B shown in FIG.

[0026] Figure 4 yes Figure 2 The schematic diagram of the cover plate assembly shown in FIG. 1 with the pole removed;

[0027] Figure 5 yes Figure 4 A schematic diagram of a local enlargement of C shown in FIG.

[0028] Figure 6 is a cross-sectional view of a pole according to an embodiment of the utility model;

[0029] Figure 7 is a schematic diagram of an electrode assembly and an electrode column according to an embodiment of the utility model;

[0030] Figure 8 is a schematic diagram of an electrode assembly and a pole at another angle according to an embodiment of the utility model;

[0031] Fig. 9 yes Figure 8 A cross-sectional view at DD is shown in FIG.

[0032] Reference numerals:

[0033] 10. Cover plate assembly;

[0034] 11. Cover plate;

[0035] 12, conductive terminal; 121, first ring; 122, connecting body; 123, connecting plate; 124, second ring; 1201, connecting groove; 1202, sink;

[0036] 13, pole; 131, column; 1311, welding part; 1312, connecting part; 132, bottom plate;

[0037] 14. Upper plastic; 15. Sealing ring; 16. Lower plastic;

[0038] 20. electrode assembly; 21. pole ear; 30. shell; 301. accommodating cavity;

[0039] 100.Battery. DETAILED DESCRIPTION

[0040] The embodiments of the present invention 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 invention, and should not be construed as limiting the present invention.

[0041] First, refer to Figure 1-Figure 9 A battery 100 according to an embodiment of the second aspect of the utility model is briefly described. The battery 100 includes a shell 30, an electrode assembly 20 and a cover assembly 10. The shell 30 has a accommodating cavity 301 with one side open. The electrode assembly 20 is arranged in the accommodating cavity 301. The cover assembly 10 covers the opening of the accommodating cavity 301. The pole ear 21 of the electrode assembly 20 is electrically connected to the pole 13 of the cover assembly 10.

[0042] Reference below Figure 1-Figure 9 A cover plate assembly 10 according to an embodiment of the first aspect of the present invention is described.

[0043] like Figure 1-Figure 9 As shown, the cover plate assembly 10 according to the first embodiment of the utility model includes: a cover plate 11, a conductive terminal 12 and a pole 13. The conductive terminal 12 is riveted to the cover plate 11, and the conductive terminal 12 is formed with a connecting groove 1201. The connecting groove 1201 is along the thickness direction of the cover plate 11 (such as Figure 2 The pole 13 includes a column 131, one end of the column 131 extends into the connecting groove 1201 and is welded to the conductive terminal 12.

[0044] In the present embodiment, the conductive terminal 12 is riveted to the cover plate 11, so that the conductive terminal 12 can be stably and securely connected to the cover plate 11, thereby effectively avoiding the situation where the conductive terminal 12 is indirectly fixed to the cover plate 11 by connecting with the pole 13, and the conductive terminal 12 and the cover plate 11 are not securely fixed. The overall structure of the conductive terminal 12, the cover plate 11 and the pole 13 after assembly is more stable and reliable, so that the cover plate assembly 10 can be stably and well assembled in the battery 100, and the conductive terminal 12 can be stably electrically connected to the outside and output electricity.

[0045] In this embodiment, the conductive terminal 12 is provided with a connecting groove 1201, and the connecting groove 1201 is open on one side in the thickness direction of the cover plate 11. The column 131 of the pole 13 extends into the connecting groove 1201 and is connected to the conductive terminal 12. The structure is simple and convenient for the pole 13 to be inserted. The connecting groove 1201 can play a certain guiding role for the pole 13, so that the pole 13 and the conductive terminal 12 can be assembled and fixed more conveniently and easily.

[0046] It is understandable that when the battery 100 is assembled, the pole 13 needs to be connected and assembled with the electrode assembly 20 and the cover assembly 10. Specifically, after the pole 13 is connected to the electrode assembly 20, the cover assembly 10 will cover the open side of the shell 30. At this time, the pole 13 and the conductive terminal 12 need to be welded and connected on the outside of the battery 100. Since the cover assembly 10 has a certain thickness, the pole 13 often needs to penetrate into the cover 11 a certain distance along the thickness direction of the cover 11 to facilitate the connection between the pole 13 and the cover 11.

[0047] In this embodiment, the conductive terminal 12 is provided with a connecting groove 1201, which can play a role in avoiding the column 131 of the pole 13, so that the conductive terminal 12 can be well matched and assembled with the cover plate 11 and the pole 13, and can meet the needs of welding connection between the conductive terminal 12 and the pole 13, and the connecting groove 1201 can form a good sealing connection structure with the column 131, so that the sealing needs of the battery 100 can be met after the pole 13 and the conductive terminal 12 are welded.

[0048] In this embodiment, when the conductive terminal 12 is connected and assembled with the pole 13, one end of the column 131 of the pole 13 is inserted into the connecting groove 1201 and welded to the conductive terminal 12 to complete the connection and fixation. The assembly is convenient and the process is reduced, thereby greatly improving the production efficiency of the battery 100.

[0049] According to the cover plate assembly 10 of the embodiment of the utility model, the conductive terminal 12 is riveted to the cover plate 11, and the conductive terminal 12 is provided with a connecting groove 1201. The column 131 of the pole 13 extends into the connecting groove 1201 and is welded to the conductive terminal 12, so that the connection and fixation between the electrode terminal and the cover plate 11 is more stable and reliable, and the assembly process of the electrode terminal and the pole 13 is reduced, thereby improving the overall structural stability and reliability of the cover plate assembly 10, making the operation of the battery 100 more stable and reliable, and the production efficiency higher.

[0050] In some embodiments of the present invention, Figure 3 and Figure 5 As shown, the conductive terminal 12 may include: a connecting body 122 and a connecting plate 123, the connecting body 122 is a hollow ring; the connecting plate 123 is arranged in the cavity of the connecting body 122, the connecting plate 123 cooperates with the connecting body 122 to define a connecting groove 1201, and the column 131 is welded to the connecting plate 123.

[0051] In this embodiment, the conductive terminal 12 is provided with a connecting body 122 and a connecting plate 123. The connecting body 122 is provided with a hollow ring shape. The connecting plate 123 is provided in the connecting body 122 and cooperates with the connecting body 122 to form a connecting groove 1201. The structure is simple and the processing is convenient. The connecting plate 123 can be welded and connected with one end of the column 131 extending into the connecting groove 1201. The inner peripheral wall of the connecting body 122 can guide and fix the column 131, so that the pole 13 and the conductive terminal 12 are more convenient and easy to assemble, and the positioning welding of the pole 13 and the connecting plate 123 is convenient, so that the welding connection between the pole 13 and the connecting plate 123 is more convenient, and the connection and fixing effect of the pole 13 and the connecting plate 123 is better.

[0052] In one embodiment of the present invention, Figure 3 and Figure 5 As shown, the side of the connecting plate 123 facing away from the pole 13 can cooperate with the connecting body 122 to define a sink 1202. In this way, the weld mark formed when the connecting plate 123 and the pole 13 are welded can be located in the sink 1202, thereby preventing the weld mark from protruding from the end surface of the conductive terminal 12, so that the conductive terminal 12 can have a good connection matching surface when connected and assembled with an external connector, so that the battery 100 can be better assembled with the external connector.

[0053] In an embodiment of the present invention, the thickness of the connecting plate 123 may be in the range of 0.8 mm to 1.5 mm.

[0054] In this embodiment, the thickness of the connecting plate 123 is limited to between 0.8 mm and 1.5 mm, so that the connecting plate 123 can have a sufficient thickness to facilitate the welding connection between the connecting plate 123 and the pole 13, so that the connecting plate 123 and the pole 13 form a stable and reliable connection structure after welding, and at the same time, avoid the connecting plate 123 being too thick and increasing the welding difficulty between the connecting plate 123 and the pole 13, so that the conductive terminal 12 and the pole 13 can be stably and well welded. For example, the thickness of the connecting plate 123 can be 0.8 mm, 0.9 mm, 0.95 mm, 1.1 mm, 1.4 mm, 1.5 mm, etc. The thickness of the connecting plate 123 can be reasonably set according to welding requirements.

[0055] In one embodiment of the present invention, Figure 3 and Figure 5 As shown, the conductive terminal 12 may also include: a first ring 121 and a second ring 124, the first ring 121 is connected to one end of the opening of the connecting body 122 which is away from the connecting groove 1201, the first ring 121 extends radially outwardly of the connecting body 122 and extends circumferentially of the connecting body 122 to form a ring; the second ring 124 is connected to the other end of the opening of the connecting body 122 having the connecting groove 1201, the second ring 124 extends radially outwardly of the connecting body 122 and extends circumferentially of the connecting body 122 to form a ring, the first ring 121 and the second ring 124 are respectively arranged on both sides of the thickness direction of the cover plate 11.

[0056] In this embodiment, a first ring 121 and a second ring 124 are respectively provided at both ends of the connection body 122. The first ring 121 and the second ring 124 can play a good role in structural reinforcement of the connection body 122, so that the riveting fixation of the conductive terminal 12 and the cover plate 11 is more firm and reliable, thereby making the overall structure of the conductive terminal 12 and the cover plate 11 more stable.

[0057] In this embodiment, the first ring 121 and the second ring 124 are respectively arranged on both sides of the cover plate 11 in the thickness direction. The first ring 121 and the second ring 124 cooperate with the connecting body 122 to form a riveted structure, so that the conductive terminal 12 can be stably riveted and fixed to the cover plate 11. The structure is simple and the fixation is convenient and reliable.

[0058] In some examples of the present invention, the thickness of the second ring 124 may range from 0.8 mm to 1.2 mm.

[0059] In this embodiment, the thickness of the second ring 124 is limited to between 0.8 mm and 1.2 mm, so that the second ring 124 has good structural strength, so that it can be stably and reliably riveted to the cover plate 11 in cooperation with the first ring 121 and the connecting body 122. It can be understood that after the cover plate 11 is assembled with the housing 30, the side of the cover plate assembly 10 with the opening of the connecting groove 1201 faces the electrode assembly 20, so that the pole 13 can be connected to the conductive terminal 12 in cooperation with the connecting groove 1201, and the second ring 124 is in the accommodating cavity 301. In this embodiment, the second ring 124 is set to be less than or equal to 1.2 mm, which can avoid the second ring 124 being too thick and occupying more space in the accommodating cavity 301, so that the battery 100 can have a good energy density.

[0060] For example, the thickness of the second ring 124 may be 0.8 mm, 0.85 mm, 0.9 mm, 0.91 mm, 1 mm, 1.2 mm, etc. The thickness of the second ring 124 may be reasonably set according to actual installation requirements.

[0061] In some embodiments of the present invention, the conductive terminal 12 may be an integral piece.

[0062] In the present embodiment, the conductive terminal 12 is configured as an integral part. Specifically, the first ring 121, the second ring 124, the connecting body 122 and the connecting plate 123 of the conductive terminal 12 can be formed by integral processing, so that the conductive terminal 12 can be processed more conveniently, the overall structural strength is better, and the connection and fixation between the conductive terminal 12 and the cover plate 11 is more reliable. The connecting plate 123 and the connecting body 122 are formed as one piece, so that the connecting groove 1201 has good sealing performance, so that the conductive terminal 12 and the pole 13 can have a good sealing connection effect after being welded.

[0063] In some embodiments of the present invention, Figure 5 As shown, the cover assembly 10 may further include: an upper plastic 14, a lower plastic 16 and a sealing ring 15. The cover 11 may be formed with a through hole, the sealing ring 15 is inserted into the through hole and is sealed between the inner wall of the through hole and the outer peripheral surface of the connecting body 122; the upper plastic 14 is arranged between the first ring 121 and the cover 11 and is connected to one end of the sealing ring 15 in the thickness direction of the cover 11; the lower plastic 16 is arranged on the side of the cover 11 in the thickness direction away from the first ring 121, and a part of the lower plastic 16 is arranged between the second ring 124 and the cover 11 and is connected to the other end of the sealing ring 15 in the thickness direction of the cover 11.

[0064] In this embodiment, an upper plastic 14 and a lower plastic 16 are respectively arranged on both sides of the cover plate 11 in the thickness direction, and the upper plastic 14 and the lower plastic 16 are both connected to the sealing ring 15, so that the upper plastic 14, the lower plastic 16 and the sealing ring 15 can cooperate to play a good insulation role between the conductive terminal 12 and the cover plate 11, and have a good sealing effect on the perforation of the cover plate 11, so that the battery 100 accommodating cavity 301 forms a good enclosed space, so that the battery 100 can operate more stably.

[0065] In this embodiment, the cover plate 11 is provided with a perforation, which can facilitate the riveting and fixing of the conductive terminal 12 and the cover plate 11 , making it more convenient to connect and assemble the pole 13 and the conductive terminal 12 .

[0066] In some embodiments of the present invention, Figure 3 and Figure 6 As shown, the pole 13 may also include a bottom plate 132, which is connected to the other end of the column 131. The bottom plate 132 extends radially outward from the column 131 and extends circumferentially from the column 131 to form a ring. The bottom plate 132 is suitable for being connected to the pole ear 21 of the electrode assembly 20, and the bottom plate 132 and the column 131 are an integral part.

[0067] In this embodiment, the pole 13 is provided with a bottom plate 132, which can facilitate the connection and fixation of the pole 13 with the pole lug 21 of the electrode assembly 20. The bottom plate 132 can increase the connection surface between the pole 13 and the pole lug 21, so that the pole 13 can be stably connected to the pole lug 21. In this embodiment, the bottom plate 132 and the column 131 are provided as an integral part, which has a simple structure and is easy to process. The bottom plate 132 can replace the original electrical connection sheet to achieve the connection between the pole 13 and the pole lug 21, making the overall structure of the pole 13 more compact, and to a certain extent can reduce the space occupied by the pole 13 in the accommodating cavity 301, so that the battery 100 can have a higher energy density.

[0068] In this embodiment, the bottom plate 132 and the column 131 are configured as an integral part, which can simplify the processing steps and improve the production efficiency of the cover plate assembly 10, thereby making the production efficiency of the battery 100 higher.

[0069] In some embodiments of the present invention, Figure 5 As shown, the inner peripheral wall of the connecting groove 1201 and the peripheral edge of the connecting groove 1201 can be rounded.

[0070] In this way, the column 131 can be inserted into the connecting groove 1201 more conveniently and accurately from the opening of the connecting groove 1201, making the assembly of the pole 13 and the conductive terminal 12 more convenient and quick, thereby making the assembly efficiency of the cover assembly 10 higher.

[0071] In one embodiment of the present invention, Figure 6As shown, the column 131 may include: a welding portion 1311 and a connecting portion 1312, the welding portion 1311 is arranged at one end of the column 131, and the welding portion 1311 is welded and connected to the conductive terminal 12; the connecting portion 1312 extends in a ring shape along the circumference of the column 131, one end of the connecting portion 1312 is connected to the welding portion 1311, and the other end of the connecting portion 1312 is connected to the base plate 132.

[0072] In this embodiment, the column 131 includes a welding portion 1311 and a connecting portion 1312. The connecting portion 1312 extends in a ring shape along the circumference of the column 131 and one end is connected to the welding portion 1311, so that the column 131 can form a hollow structure, thereby reducing the material usage and weight of the column 131, reducing the cost of the cover assembly 10, and improving the weight energy density of the battery 100 to a certain extent.

[0073] In this embodiment, the other end of the connecting portion 1312 is connected to the bottom plate 132 . Specifically, the bottom plate 132 can be formed by turning one end of the connecting portion 1312 radially outward along the column 131 , so that the pole 13 is more convenient to manufacture.

[0074] In one embodiment of the present invention, Figure 6 As shown, the peripheral edge of one end of the connecting portion 1312 facing the connecting groove 1201 and the outer peripheral surface of the connecting portion 1312 may be rounded.

[0075] In this way, the rounded corners around the connecting groove 1201 can be matched, so that the column 131 of the pole 13 can be more conveniently and smoothly inserted into the connecting groove 1201, thereby further improving the assembly efficiency of the pole 13 and the conductive terminal 12. The rounded corner structure is simple and can play a good guiding role.

[0076] In some examples of the present invention, reference Figure 3 As shown, the conductive terminal 12 includes a connecting plate 123 , and the welding portion 1311 of the column 131 is welded to the connecting plate 123 . The thickness of the welding portion 1311 may be greater than or equal to the thickness of the connecting plate 123 .

[0077] In this embodiment, the thickness of the welding portion 1311 is set to be greater than or equal to the thickness of the connecting plate 123, so that the connecting plate 123 and the welding portion 1311 can be well avoided from being welded through the welding portion 1311 during welding, so that the pole 13 and the conductive terminal 12 can form a stable and reliable welding structure, so that the pole 13 and the conductive terminal 12 can form a stable and good electrical connection, so that the conductive terminal 12 can stably output electricity to the outside.

[0078] Reference below Figure 1-Figure 9 A battery 100 according to an embodiment of the second aspect of the present invention is described.

[0079] like Figure 1-Figure 9 As shown, the battery 100 according to the embodiment of the utility model comprises: a housing 30, an electrode assembly 20 and a cover assembly 10 according to the first embodiment of the utility model. The housing 30 has a receiving cavity 301 with one side open; the electrode assembly 20 is arranged in the receiving cavity 301, and the electrode assembly 20 has a pole ear 21; the cover assembly 10 covers the opening of the receiving cavity 301, and the pole 13 is welded to the pole ear 21.

[0080] Other structures and operations of the battery 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0081] According to the battery 100 of the embodiment of the utility model, by setting the cover assembly 10 of the first embodiment mentioned above, the conductive terminal 12 is riveted to the cover 11, the conductive terminal 12 is provided with a connecting groove 1201, and the column 131 of the pole 13 extends into the connecting groove 1201 and is welded to the conductive terminal 12, so that the connection and fixation between the electrode terminal and the cover 11 is more stable and reliable, and the assembly process of the electrode terminal and the pole 13 is reduced, thereby making the overall structural stability and reliability of the cover assembly 10 better, making the operation of the battery 100 more stable and reliable, and the production efficiency higher.

[0082] The following will refer to Figure 1-Figure 9 A battery 100 according to a specific embodiment of the present invention is described.

[0083] like Figure 1-Figure 9 As shown, the battery 100 includes a shell 30, an electrode assembly 20 and a cover assembly 10. The shell 30 has a accommodating cavity 301, one side of which is open. The electrode assembly 20 is arranged in the accommodating cavity 301 and has a pole ear 21. The pole ear 21 can form a good connecting surface through flattening treatment. The cover assembly 10 is covered on the open mouth of the accommodating cavity 301.

[0084] The cover assembly 10 includes a cover 11, an upper plastic 14, a lower plastic 16, a sealing ring 15, a pole 13 and a conductive terminal 12. The cover 11 is provided with a through hole, and the sealing ring 15 is inserted in the through hole. The upper plastic 14 can be bonded to the side of the cover 11 away from the housing 30 and connected to the sealing ring 15, and the lower plastic 16 can be bonded to the other side of the cover 11 and connected to the sealing ring 15. The conductive terminal 12 includes a first ring 121, a second ring 124, a connecting body 122 and a connecting plate 123. The connecting body 122 passes through the through hole. The sealing ring 15 is arranged between the connecting body 122 and the inner wall of the through hole. The first ring 121 is connected to one end of the connecting body 122. The upper plastic 14 is arranged between the first ring 121 and one side surface of the cover plate 11. The second ring 124 is connected to the other end of the connecting body 122. Part of the lower plastic 16 is located between the second ring 124 and the other side surface of the cover plate 11. The connecting body 122 is a hollow ring. The connecting plate 123 is arranged in the hollow cavity of the connecting body 122. The two side surfaces of the connecting plate 123 respectively cooperate with the inner circumferential wall of the connecting body 122 to define a sink 1202 and a connecting groove 1201.

[0085] The pole 13 includes a column 131 and a bottom plate 132. The column 131 includes a welding portion 1311 and a connecting portion 1312. The connecting portion 1312 is a hollow ring. One end of the connecting portion 1312 is connected to the welding portion 1311. The periphery of the other end of the connecting portion 1312 is connected to the bottom plate 132. The bottom plate 132 is welded to the flexible and flat pole ear 21. The column 131 extends into the connecting groove 1201. The welding portion 1311 is welded to the connecting plate 123. The conductive terminal 12 and the pole 13 are both integral parts. The pole 13 can be formed by integral stamping.

[0086] The battery 100 of the embodiment of the utility model is riveted to the cover plate 11 by the conductive terminal 12. The conductive terminal 12 is provided with a connecting groove 1201. The column 131 of the pole 13 extends into the connecting groove 1201 and is welded to the conductive terminal 12, so that the connection and fixation between the electrode terminal and the cover plate 11 is more stable and reliable, and the assembly steps of the electrode terminal and the pole 13 are reduced, thereby improving the overall structural stability and reliability of the cover plate assembly 10, making the operation of the battery 100 more stable and reliable, and the production efficiency is higher.

[0087] In the description of the present invention, 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 invention 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 invention.

[0088] 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 one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0089] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 a communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] 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 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 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.

[0091] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cover plate assembly, characterized in that: include: Cover plate; A conductive terminal, the conductive terminal is riveted to the cover plate, the conductive terminal is formed with a connection groove, and the connection groove is open on one side along the thickness direction of the cover plate; The pole comprises a column, one end of which extends into the connection slot and is welded to the conductive terminal.

2. The cover plate assembly according to claim 1, characterized in that: The conductive terminal comprises: A connecting body, wherein the connecting body is a hollow ring; A connecting plate is disposed in the cavity of the connecting body, the connecting plate cooperates with the connecting body to define the connecting groove, and the column is connected to the connecting plate by welding.

3. The cover plate assembly according to claim 2, characterized in that: The thickness of the connecting plate ranges from 0.8 mm to 1.5 mm.

4. The cover plate assembly according to claim 2, characterized in that: The conductive terminal further comprises: A first ring, the first ring being connected to an end of the connection body away from the opening of the connection groove, the first ring extending radially outward from the connection body and extending circumferentially from the connection body in a ring shape; The second ring is connected to the other end of the opening of the connecting body having the connecting groove, the second ring extends radially outward from the connecting body and extends circumferentially from the connecting body to form a ring, and the first ring and the second ring are respectively arranged on both sides of the cover plate in the thickness direction.

5. The cover plate assembly according to any one of claims 1 to 4, characterized in that: The conductive terminal is an integral piece.

6. The cover plate assembly according to claim 1, characterized in that: The inner peripheral wall of the connecting groove and the peripheral edge of the connecting groove are rounded.

7. The cover plate assembly according to claim 1, characterized in that: The pole also includes a bottom plate, which is connected to the other end of the column, extends radially outward from the column and extends circumferentially from the column in a ring shape, is suitable for being connected to the pole ear of the electrode assembly, and is an integral part of the column.

8. The cover plate assembly according to claim 7, characterized in that: The column comprises: A welding portion, the welding portion is arranged at the one end of the column, and the welding portion is welded to the conductive terminal; A connecting portion, wherein the connecting portion extends in a ring shape along the circumference of the column, one end of the connecting portion is connected to the welding portion, and the other end of the connecting portion is connected to the bottom plate.

9. The cover plate assembly according to claim 8, characterized in that: The conductive terminal comprises a connecting plate, the welding portion of the column is connected to the connecting plate by welding, and the thickness of the welding portion is greater than or equal to the thickness of the connecting plate.

10. A battery, characterized in that: include: A housing having a receiving cavity with one side open; An electrode assembly, the electrode assembly is disposed in the accommodating cavity, and the electrode assembly has a pole ear; According to any one of claims 1 to 9, the cover plate assembly is arranged to cover the opening of the accommodating cavity, and the pole is welded to the pole ear.

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