Battery top cover, battery and electric device

Abstract

Provided in the present application are a battery top cover, a battery and an electric device. The battery top cover comprises a top cover assembly, a first electrode terminal and a first electrode stud, wherein a first through hole is formed in the top cover assembly, the first electrode terminal is attached to the top cover assembly, the first electrode stud passes through the first through hole, and a first end of the first electrode stud is connected to the first electrode terminal; and an accommodating groove is formed in the top cover assembly, and an orthographic projection of a connection redundant portion of the first electrode stud and the first electrode terminal on the top cover assembly is located in the accommodating groove.

Description

Battery top cover, battery and electric device

[0001] The present application claims priority to the Chinese patent application No. 202421591192.3, filed on July 5, 2024, with the Chinese Patent Office; the whole content of the above application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, in particular to a battery top cover, a battery and an electric device. BACKGROUND

[0003] The battery top cover is one of the important components of the battery. The battery top cover generally comprises a top cover, a pole, a connecting terminal and the like. SUMMARY

[0004] In the related art, the battery top cover mainly connects the pole and the connecting terminal through welding, mortise and tenon and the like. However, the above connection methods are prone to cause redundant structure at the connection part of the pole and the connecting terminal, thereby affecting the flatness of the top cover.

[0005] In a first aspect, the present application provides a battery top cover, comprising:

[0006] a top cover assembly, comprising a first through hole;

[0007] a first electrode terminal, attached to the top cover assembly;

[0008] a first electrode pole, penetrating the first through hole, and a first end of the first electrode pole being connected to the first electrode terminal;

[0009] wherein the top cover assembly is provided with a receiving groove, and a connection redundant part of the first electrode pole and the first electrode terminal is located in the receiving groove in the orthographic projection on the plane of the side of the top cover assembly close to the first electrode terminal.

[0010] In a second aspect, the present application provides a battery comprising the above-mentioned battery top cover.

[0011] In a third aspect, the present application provides an electric device comprising the above-mentioned battery. ADVANTAGEOUS EFFECTS

[0012] The battery top cover provided in the application, when connecting the first electrode post and the first electrode terminal together, the connection redundant part of the first electrode post and the first electrode terminal is in the accommodating groove, because the orthographic projection of the connection redundant part on the plane of the top cover assembly close to the first electrode terminal is in the accommodating groove. That is, the application improves the influence of the connection redundant part on the flatness of the top cover assembly by using the accommodating groove to accommodate the connection redundant part, and improves the influence of the connection redundant part on the first electrode terminal and the first electrode post when they are installed on the top cover assembly, and avoids the unevenness of the top cover assembly. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a structural exploded schematic view of the battery top cover provided in the embodiment of the application;

[0014] Fig. 2 is a sectional view of the battery top cover provided in the embodiment of the application;

[0015] Fig. 3 is an enlarged schematic view of the structure at A in Fig. 2 of the application;

[0016] Fig. 4 is a structural schematic view of the first battery terminal provided in the embodiment of the application;

[0017] Fig. 5 is a structural schematic view of the connection of the first battery terminal and the first electrode post provided in the embodiment of the application;

[0018] Fig. 6 is a structural schematic view of the first electrode post provided in the embodiment of the application;

[0019] Fig. 7 is a partial structural schematic view of the battery top cover provided in the embodiment of the application. Embodiment of the application

[0020] The embodiment of the application discloses a battery top cover, as shown in Fig. 1, Fig. 2 and Fig. 3, the battery top cover comprises a top cover assembly 1, a first electrode terminal 2 and a first electrode post 3, the top cover assembly 1 is provided with a first through hole 11, the first electrode terminal 2 is attached to the top cover assembly 1, the first electrode post 3 is arranged through the first through hole 11, and the first end of the first electrode post 3 is connected with the first electrode terminal 2.

[0021] The top cover assembly 1 is provided with an accommodating groove 12, and the orthographic projection of the connection redundant part of the first electrode post 3 and the first electrode terminal 2 on the plane of the top cover assembly 1 close to the first electrode terminal 2 is in the accommodating groove 12.

[0022] According to the battery top cover of the embodiment of the present application, when the first electrode post 3 and the first electrode terminal 2 are connected together, the connection redundancy part of the first electrode post 3 and the first electrode terminal 2 is in the accommodating groove 12, that is, the battery top cover of the present application uses the accommodating groove 12 to accommodate the connection redundancy part, improves the influence of the connection redundancy part on the flatness of the top cover assembly 1, and improves the influence of the connection redundancy part on the first electrode terminal 2 and the first electrode post 3 when they are installed on the top cover assembly 1, thereby avoiding the unevenness of the top cover assembly 1.

[0023] In an embodiment of the present application, the connection redundancy part includes welding material.

[0024] It can be understood that when the first electrode post 3 and the first electrode terminal 2 are connected together by welding, the welding material such as solder paste drops into the accommodating groove 12, and the welding material remaining at the connection of the first electrode post 3 and the first electrode terminal 2 is in the accommodating groove. That is, the battery top cover of the present application uses the accommodating groove 12 to accommodate the welding material such as solder paste, improves the influence of the welding material such as solder paste on the flatness of the top cover assembly 1, and improves the influence of the welding material such as solder paste on the first electrode terminal 2 and the first electrode post 3 when they are installed on the top cover assembly 1, thereby avoiding the unevenness of the top cover assembly 1.

[0025] In the related art, the welding material such as solder paste drops and accumulates on the side of the top cover assembly 1 facing the first electrode terminal 2, which causes the poor flatness of the side of the top cover assembly 1 facing the first electrode terminal 2, and the first electrode terminal 2 or the first electrode post 3 is affected by the accumulated welding material when they are installed on the top cover assembly 1, which causes the unevenness of the two sides and affects the quality of the battery top cover.

[0026] It can be understood that the accommodating groove 12 is formed on the side of the top cover assembly 1 facing the first electrode terminal 2, which is opposite to the connection redundancy part of the first electrode post 3 and the first electrode terminal 2, so that the accommodating groove 12 can collect the welding material such as solder paste when the first electrode post 3 and the first electrode terminal 2 are welded, avoid the welding material such as solder paste from dropping to the connection surface of the first electrode terminal 2 or the first electrode post 3 and the top cover assembly 1, improve the influence of the dropped welding material such as solder paste on the flatness of the top cover assembly 1, and improve the influence of the welding material such as solder paste on the first electrode terminal 2 and the first electrode post 3 when they are installed on the top cover assembly 1, thereby avoiding the unevenness of the two sides of the top cover assembly 1.

[0027] In some examples, the first electrode terminal 2 is a negative electrode terminal, and the first electrode post 3 is a negative electrode post.

[0028] At this time, the structure at the positive electrode terminal and the positive electrode post can be the same as that at the negative electrode terminal and the negative electrode post, that is, the positive electrode terminal is attached to the top cover assembly 1, the positive electrode post is arranged through the top cover assembly 1, and the positive electrode post and the positive electrode terminal are connected by welding, the top cover assembly 1 is provided with a positive electrode accommodating structure, the positive electrode post and the positive electrode terminal are connected redundantly, and the positive projection of the top cover assembly 1 is located in the positive electrode accommodating structure. The positive electrode accommodating structure is arranged to accommodate the solder material such as solder paste dripping when the positive electrode post and the positive electrode terminal are welded. When the positive electrode post and the positive electrode terminal are connected by welding, since the positive projection of the top cover assembly 1 is located in the positive electrode accommodating structure, the solder material such as solder paste will drip into the positive electrode accommodating structure when it drips. That is, by using the positive electrode accommodating structure to accommodate the solder material such as solder paste, the influence of the solder material such as solder paste on the flatness of the top cover assembly 1 is improved, and the influence of the solder material such as solder paste on the installation of the positive electrode terminal and the positive electrode post on the top cover assembly 1 is improved, and the situation that the top cover assembly 1 is not flat on both sides is avoided.

[0029] In an embodiment of the present application, the connection redundancy includes a riveting protrusion.

[0030] It can be understood that the first electrode post 3 and the first electrode terminal 2 are connected by riveting, and since the positive projection of the top cover assembly 1 on the side close to the first electrode terminal 2 is located in the accommodating groove 12, the riveting protrusion of the first electrode post 3 and the first electrode terminal 2 will be located in the accommodating groove 12. That is, by using the accommodating groove 12 to accommodate the riveting protrusion, the influence of the riveting protrusion on the flatness of the top cover assembly 1 is improved, and the situation that the top cover assembly 1 is not flat on both sides is avoided.

[0031] In an embodiment of the present application, as shown in FIGS. 3 and 5, the first electrode post 3 includes an integrally formed connecting block 31 and a main body 32, the connecting block 31 is connected to one end of the main body 32, and the other end of the main body 32 is arranged through the first through hole 11. Among them, the connecting block 31 extends outward along the circumference of the main body 32, the diameter of the connecting block 31 is greater than the diameter of the first through hole 11, the connecting block 31 is connected with the first electrode terminal 2, so that the connecting block 31 is attached to the top cover assembly 1. To avoid the connection redundancy being perpendicular to the hole wall of the first through hole 11, the accommodating groove 12 is easily opened.

[0032] In an embodiment of the present application, as shown in FIGS. 3, 4 and 5, the first electrode terminal 2 is provided with a first clamping groove 21 on the side facing the first electrode post 3, the first end of the first electrode post 3 is clamped in the first clamping groove 21, and the side wall of the first clamping groove 21 is connected with the first electrode post 3.

[0033] It can be understood that the first electrode column 3 is clamped in the first clamping groove 21 of the first electrode terminal 2, and the first clamping groove 21 can limit the first electrode column 3, thereby improving the connection stability of the electrode column and the first electrode terminal 2. And first, the first electrode column 3 is limited by the first clamping groove 21, so that the first electrode terminal 2 and the first electrode column 3 cannot move relative to each other. At this time, the first electrode terminal 2 and the first electrode column 3 are connected together by welding, which ensures the accuracy and quality of welding; or the first electrode terminal 2 and the first electrode column 3 can be connected by riveting, which facilitates the connection of the first electrode terminal 2 and the first electrode column 3.

[0034] In some examples, the side wall of the first clamping groove 21 and the first electrode column 3 are fixedly connected together by welding to achieve fixed connection of the first electrode terminal 2 and the first electrode column 3. And after clamping the first electrode column 3 in the first clamping groove 21, welding is performed again, which can increase the welding area between the first electrode column 3 and the first electrode terminal 2, thereby improving the connection stability between the first electrode column 3 and the first electrode terminal 2.

[0035] In some examples, the inner wall surface of the first clamping groove 21 abuts against the first electrode column 3, and the shape of the first electrode column 3 matches the shape of the inner wall surface of the first clamping groove 21. The inner wall surface of the first clamping groove 21 can be a regular shape or an irregular shape.

[0036] In the embodiment of the present application, the side wall surface of the first electrode column 3 is connected with the side wall surface of the first clamping groove 21 by welding, the side wall surface of the first electrode column 3 is in the containing groove 12 in the orthographic projection of the top cover assembly 1, and the side wall surface of the first clamping groove 21 is also in the containing groove 12 in the orthographic projection of the top cover assembly 1. It is ensured that the connection redundancy of the electrode column and the first electrode terminal 2 in the orthographic projection of the top cover assembly 1 will be in the containing groove 12, so that the solder paste and other welding materials during welding of the first electrode column 3 and the first electrode terminal 2 will drop into the annular groove, thereby improving the influence of the dropped solder paste and other welding materials on the flatness of the top cover assembly 1, improving the influence of the solder paste and other welding materials on the first electrode terminal 2 and the first electrode column 3 when they are installed in the top cover assembly 1, and avoiding the situation that the top cover assembly 1 has high and low sides on both sides.

[0037] In the embodiment of the application, the first electrode post 3 is, for example, a cylindrical structure, the first clamping groove 21 is a circular groove matched with the first electrode post 3, and the accommodating groove 12 is an annular groove. The outer wall surface of the first electrode post 3 and the inner wall surface of the first clamping groove 21 are connected by welding, the outer wall surface of the first electrode post 3 is in the annular groove in the orthographic projection of the top cover assembly 1, the inner wall surface of the first clamping groove 21 is also in the annular groove in the orthographic projection of the top cover assembly 1, and then the connection redundancy of the first electrode post 3 and the first electrode terminal 2 is also in the annular groove in the orthographic projection of the top cover assembly 1, which ensures that the solder paste and other welding materials during the welding of the first electrode post 3 and the first electrode terminal 2 will drop into the annular groove, improves the influence of the dropped solder paste and other welding materials on the flatness of the top cover assembly 1, improves the influence of the solder paste and other welding materials on the installation of the first electrode terminal 2 and the first electrode post 3 on the top cover assembly 1, and avoids the unevenness of the top cover assembly 1 on both sides.

[0038] In the embodiment of the application, as shown in FIG. 6, the side of the first electrode post 3 facing the first electrode terminal 2 is formed with a second clamping groove 33, and the first electrode terminal 2 is clamped in the second clamping groove 33.

[0039] It can be understood that the first electrode terminal 2 is clamped in the second clamping groove 33 of the first electrode post 3, and the second clamping groove 33 can limit the first electrode terminal 2, so that the first electrode terminal 2 and the first electrode post 3 cannot move relative to each other, so as to connect the first electrode terminal 2 and the first electrode post 3 together by welding, and ensure the accuracy and quality of welding.

[0040] In an embodiment of the application, the distance between the inner edge of the orthographic projection of the plane on the side of the top cover assembly close to the first electrode terminal 2 and the inner edge of the accommodating groove 12 is greater than 0, and the distance between the outer edge of the orthographic projection of the plane on the side of the top cover assembly 1 close to the first electrode terminal 2 and the outer edge of the accommodating groove 12 is greater than 0. The orthographic projection of the connection redundancy on the top cover assembly 1 is spaced apart from the side wall of the accommodating groove 12, which ensures that the connection redundancy is in the accommodating groove 12 and can effectively prevent the connection redundancy from being in a position outside the accommodating groove 12.

[0041] In some examples, when the first electrode terminal 2 and the first electrode post 3 are welded, it can be ensured that the solder paste and other welding materials during the welding of the first electrode terminal 2 and the first electrode post 3 will all drop into the accommodating groove 12, which can effectively prevent the solder paste and other welding materials from dropping into a position outside the accommodating groove 12, improve the influence of the dropped solder paste and other welding materials on the flatness of the top cover assembly 1, improve the influence of the solder paste and other welding materials on the installation of the first electrode terminal 2 and the first electrode post 3 on the top cover assembly 1, avoid the unevenness of the top cover assembly 1 on both sides, and thus ensure the quality of the battery.

[0042] In some embodiments, the central axis of the connecting redundancy part coincides with the central axis of the accommodating groove 12. The connecting redundancy part is arranged such that the distance from the edge of the projection of the top cover assembly 1 to the side wall surface of the accommodating groove 12 is the same, and the soldering material such as solder paste can drop at the center of the accommodating groove 12 when the first electrode terminal 2 and the first electrode post 3 are soldered, thereby ensuring that the soldering material such as solder paste can drop into the accommodating groove 12, improving the influence of the dropped soldering material such as solder paste on the flatness of the top cover assembly 1, improving the influence of the soldering material such as solder paste on the first electrode terminal 2 and the first electrode post 3 when they are installed on the top cover assembly 1, avoiding the situation that the top cover assembly 1 is not flat on both sides, and thus ensuring the quality of the battery.

[0043] In an embodiment of the present application, as shown in FIGS. 1, 2 and 3, the top cover assembly 1 includes a top cover sheet 13 and a first insulating part 14, the first insulating part 14 is insulated and separated between the first electrode terminal 2 and the top cover sheet 13, and the first insulating part 14 is formed with the accommodating groove 12.

[0044] It can be understood that the first electrode terminal 2 and the top cover sheet 13 are connected through the first insulating part 14, and the accommodating groove 12 is formed at the first insulating part 14 to accommodate the soldering material such as solder paste, while avoiding affecting the structure of the top cover sheet 13, thereby ensuring the structural stability of the top cover sheet 13.

[0045] In some examples, as shown in FIG. 1, the first through hole 11 includes a third through hole 111 and a fourth through hole 112, the third through hole 111 and the fourth through hole 112 are coaxially arranged, the top cover sheet 13 is formed with the third through hole 111, the first insulating part 14 is formed with the fourth through hole 112, and the first electrode post 3 is arranged through the fourth through hole 112 and the third through hole 111.

[0046] For example, the first insulating part 14 is made of plastic, and it is easier to form the accommodating groove 12 on the plastic part than on a rigid part because the material of the plastic part is softer.

[0047] In an embodiment of the present application, as shown in FIG. 1, the first insulating part 14 is formed with a third clamping groove 141, the first electrode terminal 2 is clamped in the third clamping groove 141, and the groove bottom of the third clamping groove 141 is formed with the accommodating groove 12.

[0048] It can be understood that the third clamping groove 141 can limit the first electrode terminal 2, so that the first electrode terminal 2 is stably attached to the top cover assembly 1, and the offset of the first electrode terminal 2 can be avoided.

[0049] In an embodiment of the present application, as shown in FIG. 1, FIG. 2 and FIG. 3, the first electrode terminal 2 comprises a first connecting portion 22 and a second connecting portion 23 connected to each other, the first connecting portion 22 is connected with the first electrode post 3, the second connecting portion 23 is arranged on the side of the first connecting portion 22 away from the first electrode post 3, the first connecting portion 22 and the first electrode post 3 are made of the same material, and the second connecting portion 23 is made of a material different from that of the first connecting portion 22.

[0050] In the embodiment, the first electrode post 3 is made of a single material, and there is no need to connect multiple metals during the manufacturing of the electrode post, thereby improving the structural stability of the electrode post. Meanwhile, since the first connecting portion 22 and the first electrode post 3 are made of the same material, the safety risk caused by welding different materials can be avoided.

[0051] For example, the first connecting portion 22 and the first electrode post 3 are made of copper, and the second connecting portion 23 is made of aluminum.

[0052] In the embodiment of the present application, the second end of the first electrode post 3 is arranged in the first through hole 11, the connecting surface of the first connecting portion 22 and the second connecting portion 23 and the second end of the first electrode post 3 are located on different sides of the top cover assembly 1 respectively, and the second end of the first electrode post 3 is arranged to be connected with the core package. In this way, the connecting surface of the first connecting portion 22 and the second connecting portion 23, i.e., the copper-aluminum connecting surface, is located on a different side of the top cover assembly 1 from the core package, so that the copper-aluminum connecting surface can be prevented from being soaked in the electrolyte of the core package, the influence of the electrolyte of the core package on the copper-aluminum connecting surface can be avoided, and the stability of the copper-aluminum connecting surface can be ensured.

[0053] In an embodiment of the present application, the connecting surface of the first connecting portion 22 and the second connecting portion 23 is an arc surface, the connecting area of the first connecting portion 22 and the second connecting portion 23 is increased, and the connecting stability of the first connecting portion 22 and the second connecting portion 23 is improved. For example, the first connecting portion 22 and the second connecting portion 23 can be cold-pressed into shape by two separate metal plates, or can be cold-pressed into shape by a whole composite plate.

[0054] For example, the first connecting portion 22 protrudes towards the second connecting portion 23.

[0055] In the embodiment of the present application, the side of the second connecting portion 23 away from the first connecting portion 22 is a flat surface, which facilitates the connection between the first electrode terminal 2 and other components in the subsequent process.

[0056] In an embodiment of the present application, the side of the first electrode terminal 2 facing the first electrode post 3 is provided with a first clamping groove 21, the first end of the first electrode post 3 is clamped in the first clamping groove 21, and the recess direction of the first clamping groove 21 is the same as the recess direction of the arc surface.

[0057] It can be understood that, since the recess direction of the first clamping groove 21 is the same as the recess direction of the arc surface, the first clamping groove 21 can be machined at the same time as the first and second connecting portions 22 and 23 are cold headed, thereby improving the machining efficiency.

[0058] In an embodiment of the present application, the thickness of the first connecting portion 22 is greater than or equal to 0.5 mm.

[0059] For example, the thickness of the first connecting portion 22 is 0.5 mm or 0.6 mm or 0.8 mm. It should be noted that the foregoing is only an example of the thickness of the first connecting portion 22, and the thickness of the first connecting portion 22 is not specially limited, and the first connecting portion 22 can also be any other suitable thickness.

[0060] In an embodiment of the present application, the thickness of the second connecting portion 23 is greater than or equal to 0.1 mm.

[0061] For example, the thickness of the second connecting portion 23 is 0.1 mm or 0.3 mm. It should be noted that the foregoing is only an example of the thickness of the second connecting portion 23, and the thickness of the second connecting portion 23 is not specially limited, and the thickness of the second connecting portion 23 can also be any other suitable range.

[0062] In an embodiment of the present application, as shown in FIGS. 1, 2 and 3, the top cover assembly 1 is formed with a second through hole 15, and the battery top cover includes an integrally formed second electrode terminal 4 and a second electrode post 5, the second electrode terminal 4 is connected to the top cover assembly 1, and the second electrode post 5 is provided through the second through hole 15.

[0063] It can be understood that the second electrode terminal 4 and the second electrode post 5 are integrally formed, which can improve the connection stability of the second electrode terminal 4 and the second electrode post 5, and at the same time, can simplify the production steps and speed up the production efficiency.

[0064] In an embodiment of the present application, the second electrode terminal 4 and the second electrode post 5 can also be non-integrally formed, and can be a welded connection. As shown in FIGS. 1 and 7, the top cover assembly 1 includes a top cover sheet 13 and a second insulating piece 16, the second insulating piece 16 is arranged between the second electrode terminal 4 and the top cover sheet 13, and the second insulating piece 16 is formed with an accommodating structure 161.

[0065] It can be understood that the second electrode terminal 4 and the top cover sheet 13 are connected through the second insulating member 16, and a containing structure 161 is formed at the second insulating member 16 to realize containing of the solder paste and the like. By containing the solder paste and the like by using the containing structure 161, the influence of the dropped solder paste and the like on the flatness of the top cover assembly 1 is improved, the influence of the solder paste and the like on the installation of the first electrode terminal 2 and the first electrode post 3 to the top cover assembly 1 is improved, the unevenness of the top cover assembly 1 is avoided, and the quality of the battery is ensured. At the same time, the influence on the structure of the top cover sheet 13 is avoided, and the structural stability of the top cover sheet 13 is ensured.

[0066] In some examples, as shown in FIG. 1, the second through hole 15 includes a fifth through hole 151 and a sixth through hole 152, the fifth through hole 151 and the sixth through hole 152 are coaxially arranged, the top cover sheet 13 is formed with the fifth through hole 151, the second insulating member 16 is formed with the sixth through hole 152, and the second electrode post 5 is arranged in the sixth through hole 152 and the fifth through hole 151.

[0067] For example, the second insulating member 16 is a plastic member, which can prevent the electrical connection between the second electrode terminal 4 and the top cover sheet 13, and because the plastic member has a soft material, it is easier to form the containing structure 161 on the plastic member than on a rigid member.

[0068] The embodiment of the application also discloses a battery including the battery top cover of the above-mentioned embodiment. The embodiment does not make specific requirements and special limitations on the structure of the battery, and for example, the battery further includes a shell, a core package is arranged in the shell, and the battery top cover is arranged on the shell.

[0069] According to the battery of the embodiment of the application, when the first electrode post 3 and the first electrode terminal 2 are connected together in the production of the battery, the connection part of the first electrode post 3 and the first electrode terminal 2 has a connection redundancy part, and because the normal projection of the connection redundancy part on the plane of the side of the top cover assembly 1 close to the first electrode terminal 2 is located in the containing groove 12, the connection redundancy part is located in the containing groove 12. That is, the application uses the containing groove 12 to contain the connection redundancy part, improves the influence of the connection redundancy part on the flatness of the top cover assembly 1, improves the influence of the connection redundancy part on the installation of the first electrode terminal 2 and the first electrode post 3 to the top cover assembly 1, avoids the unevenness of the top cover assembly 1, and ensures the quality of the battery.

[0070] In one embodiment of the application, as shown in FIG. 1, FIG. 2 and FIG. 3, the battery top cover includes a first sealing ring 6, the first sealing ring 6 is sleeved on the first electrode post 3 and abuts against the hole wall of the first through hole 11.

[0071] It can be understood that the first electrode post 3 is in sealing connection with the hole wall of the first through hole 11 through the first sealing ring 6, and thus the electrolyte of the core package can be prevented from overflowing through the connection between the first electrode post 3 and the hole wall of the first through hole 11, and the safety performance of the battery is improved.

[0072] In an embodiment of the present application, as shown in FIG. 1, FIG. 2 and FIG. 3, the battery top cover comprises a second sealing ring 7, which is sleeved on the second electrode post 5 and abuts against the hole wall of the second through hole 15.

[0073] It can be understood that the second electrode post 5 is in sealing connection with the hole wall of the second through hole 15 through the second sealing ring 7, and thus the electrolyte of the core package can be prevented from overflowing through the connection between the second electrode post 5 and the hole wall of the second through hole 15, and the safety performance of the battery is improved.

[0074] The embodiment of the present application also discloses a power consuming device comprising the battery of the above embodiment, and the battery comprises the battery top cover of the above embodiment.

[0075] According to the power consuming device of the embodiment of the present application, since the first electrode post 3 and the first electrode terminal 2 of the battery top cover are connected, the normal projection of the connection redundant part of the first electrode post 3 and the first electrode terminal 2 on the plane of the top cover assembly 1 close to the first electrode terminal 2 is located in the accommodating groove 12, and thus the connection redundant part is located in the accommodating groove 12. That is, the connection redundant part is accommodated in the accommodating groove 12, the influence of the connection redundant part on the flatness of the top cover assembly 1 is improved, the influence of the connection redundant part on the first electrode terminal 2 and the first electrode post 3 when they are installed in the top cover assembly 1 is improved, and the unevenness of the top cover assembly 1 is avoided, so that the quality of the power consuming device with the battery top cover is ensured.

[0076] It should be noted that the power consuming device can be a vehicle, an aircraft or a household appliance. It should be noted that the foregoing is only an example of the power consuming device, and the power consuming device is not specially limited.

Claims

1. A battery top cover, comprising: a top cover assembly provided with a first through hole; a first electrode terminal attached to the top cover assembly; a first electrode post penetrating the first through hole, and a first end of the first electrode post being connected to the first electrode terminal; wherein the top cover assembly is provided with a receiving groove, and a normal projection of a plane of a side of the top cover assembly close to the first electrode terminal on which the connection redundancy of the first electrode post and the first electrode terminal is located is in the receiving groove.

2. The battery header as defined in claim 1, wherein, a side of the first electrode terminal facing the first electrode post is provided with a first clamping groove, and the first end of the first electrode post is clamped in the first clamping groove, and a side wall of the first clamping groove is connected to the first electrode post.

3. The battery header of claim 1, wherein, a distance between an inner edge of the normal projection of the plane of the side of the top cover assembly close to the first electrode terminal and an inner edge of the receiving groove is greater than 0, and a distance between an outer edge of the normal projection of the plane of the side of the top cover assembly close to the first electrode terminal and an outer edge of the receiving groove is greater than 0.

4. The battery header of claim 1, wherein, a central axis of the connection redundancy coincides with a central axis of the receiving groove.

5. The battery cover of any one of claims 1 to 4, wherein, the top cover assembly comprises a top cover sheet and a first insulating member, the first insulating member is arranged between the first electrode terminal and the top cover sheet, and the first insulating member is formed with the receiving groove.

6. The battery cover of any one of claims 1 to 4, wherein, the first electrode terminal comprises a first connecting part and a second connecting part connected to each other, the first connecting part is connected to the first electrode post, and the second connecting part is arranged on a side of the first connecting part away from the first electrode post, a material of the first connecting part is the same as a material of the first electrode post, and a material of the second connecting part is different from a material of the first connecting part.

7. The battery header of claim 6, wherein, a connecting surface of the first connecting part and the second connecting part is an arc surface.

8. The battery header of claim 7, wherein, a side of the first electrode terminal facing the first electrode post is provided with a first clamping groove, and the first end of the first electrode post is clamped in the first clamping groove, and a recess direction of the first clamping groove is the same as a recess direction of the arc surface. 9.The battery top cover of claim 6, wherein a thickness of the first connecting part is greater than or equal to 0.5 mm; and / or, a thickness of the second connecting part is greater than or equal to 0.1 mm.

10. The battery terminal cover of any one of claims 1 to 4, wherein, the first electrode post comprises an integral connecting block and a main body part, the connecting block is connected to one end of the main body part, the other end of the main body part penetrates the first through hole, wherein the connecting block extends outward along a radial direction of the main body part, a diameter of the connecting block is greater than a diameter of the first through hole, and the connecting block is connected to the first electrode terminal.

11. The battery cover of any one of claims 1 to 4, wherein, the top cover assembly is formed with a second through hole, and the battery top cover comprises an integral second electrode terminal and a second electrode post, the second electrode terminal is connected to the top cover assembly, and the second electrode post penetrates the second through hole.

12. The battery terminal cover of any one of claims 1 to 4, wherein, the connection redundancy comprises a welding material or a riveting protrusion. 13.A battery comprising the battery top cover of any one of claims 1 to 12. 14.An electric device comprising the battery of claim 13.

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