Battery cover plate assembly, battery, and electric device

Abstract

A battery cover plate assembly (100), a battery (200), and an electric device (300). The battery cover plate assembly (100) comprises a cover plate (10) and a terminal assembly (30), the terminal assembly (30) being arranged in the cover plate (10) in a penetrating manner. A first anti-rotation structure (13a) is formed on one of the cover plate (10) and a peripheral wall (301) of the terminal assembly (30), and a second anti-rotation structure (31a) fitting with the first anti-rotation structure (13a) is formed on the other of the cover plate (10) and the peripheral wall (301) of the terminal assembly (30).

Description

Battery cover plate assembly, battery and electric device

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 2024215276140, filed on June 28, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of batteries, and in particular to a battery cover plate assembly, a battery and an electric device. BACKGROUND

[0004] In recent years, batteries as new energy are widely used in the field of electric vehicles and the like. In the battery, the pole post is connected with the battery cell and is an important component of the battery. However, in the related art, due to the limitation of the assembly mode of the pole post and the battery cover plate, the pole post is prone to rotation. Once the pole post rotates, the welding points between the pole post and other components may be damaged due to the torsional force, eventually leading to an increase in the internal resistance of the battery or even damage to the battery. SUMMARY

[0005] The present disclosure aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present disclosure is to provide a battery cover plate assembly. The cover plate of the battery cover plate assembly is provided with a first anti-rotation structure on one of the pole post assemblies and a second anti-rotation structure on the other. After the battery cover plate assembly is assembled, the first anti-rotation structure cooperates with the second anti-rotation structure to limit the pole post assembly relative to the cover plate in the circumferential direction, so that the pole post assembly cannot rotate relative to the cover plate in the circumferential direction, avoiding damage to the welding points between the pole post assembly and other components, such as avoiding damage to the welding points between the pole post assembly and the battery cell, and improving the reliability and stability of the battery.

[0006] The present disclosure also provides a battery having the above-mentioned battery cover plate assembly.

[0007] The present disclosure also provides an electric device having the above-mentioned battery.

[0008] The battery cover plate assembly according to the first aspect of the present disclosure comprises a cover plate and a pole post assembly arranged through the cover plate. One of the cover plate and the outer peripheral wall of the pole post assembly is provided with a first anti-rotation structure, and the other is provided with a second anti-rotation structure cooperating with the first anti-rotation structure.

[0009] According to the battery cover plate assembly provided by the embodiments of the present disclosure, the first anti-rotation structure and the second anti-rotation structure are arranged on one of the cover plate and the pole assembly, and the first anti-rotation structure and the second anti-rotation structure are matched after the battery cover plate assembly is assembled, so that the pole assembly is limited in the circumferential direction relative to the cover plate, and the pole assembly cannot rotate in the circumferential direction relative to the cover plate, thereby avoiding damage to the welding points between the pole assembly and other components, such as damage to the welding points between the pole assembly and the battery cell, and improving the reliability and stability of the battery.

[0010] According to some embodiments of the present disclosure, the first anti-rotation structure comprises a first anti-rotation protrusion, and the second anti-rotation structure comprises a first anti-rotation groove, and the first anti-rotation protrusion and the first anti-rotation groove are connected in a matched manner.

[0011] According to some embodiments of the present disclosure, a plurality of first anti-rotation protrusions and / or first anti-rotation grooves are arranged at intervals in the circumferential direction of the pole assembly, and the first anti-rotation protrusions and the first anti-rotation grooves are matched in a corresponding manner.

[0012] According to some embodiments of the present disclosure, the cover plate comprises a cover plate body and a first insulating member, the cover plate body is an electrically conductive member, the pole assembly is arranged in the cover plate body, the first insulating member is arranged between the pole assembly and the cover plate body, the first anti-rotation protrusion is formed on the first insulating member, and the first anti-rotation groove is formed on the outer circumferential wall of the pole assembly.

[0013] According to some embodiments of the present disclosure, the pole assembly comprises a pole and a riveting block, the pole has a first side and a second side arranged opposite in the thickness direction of the cover plate body, the riveting block is connected to the first side, the first insulating member is provided with a first mounting groove, the riveting block is mounted in the first mounting groove, the first anti-rotation groove is formed on the outer circumferential wall of the riveting block, and the first anti-rotation protrusion is formed on the inner circumferential wall of the first mounting groove.

[0014] According to some embodiments of the present disclosure, the bottom wall of the first mounting groove is a first bottom wall, the first anti-rotation protrusion is connected to the first bottom wall, and the first anti-rotation groove penetrates the surface of the riveting block facing the first bottom wall.

[0015] According to some embodiments of the present disclosure, the outer contour of the riveting block in the thickness direction of the cover plate body and the outer contour of the first insulating member in the thickness direction of the cover plate body are both circular, and the ratio of the radius of the outer contour of the riveting block in the thickness direction of the cover plate body to the radius of the outer contour of the first insulating member in the thickness direction of the cover plate body ranges from 0.75 to 0.95.

[0016] According to some embodiments of the present disclosure, the third anti-rotation structure is formed on one of the outer peripheral walls of the first insulating member, and the fourth anti-rotation structure is formed on the other outer peripheral wall of the first insulating member, so as to limit rotation of the first insulating member relative to the cover plate body.

[0017] According to some embodiments of the present disclosure, the third anti-rotation structure comprises a second anti-rotation protrusion, and the fourth anti-rotation structure comprises a second anti-rotation groove, and the second anti-rotation protrusion and the second anti-rotation groove are connected in a matching manner.

[0018] According to some embodiments of the present disclosure, the cover plate body is provided with a second mounting groove, the first insulating member is mounted in the second mounting groove, the outer peripheral wall of the first insulating member is provided with the second anti-rotation groove, and the inner peripheral wall of the second mounting groove is provided with the second anti-rotation protrusion.

[0019] According to some embodiments of the present disclosure, along the circumferential direction of the pole assembly, the second anti-rotation protrusions and / or the second anti-rotation grooves are arranged in a plurality of intervals, and the second anti-rotation protrusions and the second anti-rotation grooves correspond to each other in a matching manner.

[0020] According to some embodiments of the present disclosure, the second anti-rotation groove and the first anti-rotation protrusion are arranged in a corresponding manner in the thickness direction of the cover plate body.

[0021] According to some embodiments of the present disclosure, the cover plate comprises a second insulating member, the cover plate body comprises a first surface and a second surface arranged in a thickness direction in a relative manner, the first insulating member is connected to the first surface, the second insulating member is connected to the second surface, the pole assembly further comprises a limiting flange, the limiting flange is arranged on the second side of the pole, the limiting flange is connected to the side of the second insulating member away from the second surface, and the battery cover plate assembly further comprises a sealing ring, the sealing ring is arranged between the first insulating member and the second insulating member and insulates and separates the pole from the cover plate body.

[0022] According to some embodiments of the present disclosure, the cover plate comprises a second insulating member, the cover plate body comprises a first surface and a second surface arranged in a thickness direction in a relative manner, the second insulating member is connected to the second surface, and one of the second insulating member and the cover plate body is provided with a positioning protrusion, and the other is provided with a positioning groove matched with the positioning protrusion.

[0023] The battery according to the second aspect of the embodiments of the present disclosure comprises: a battery shell comprising the battery cover plate assembly according to the first aspect of the embodiments of the present disclosure; and a battery cell arranged in the battery shell and electrically connected to the pole assembly.

[0024] According to the battery of the embodiment of the present disclosure, by arranging the battery cover plate assembly, the limiting structure is arranged between the pole post assembly and the cover plate, and the pole post cannot rotate relative to the cover plate in the circumferential direction. The rotation of the pole post assembly is avoided, and the damage of the welding points between the pole post assembly and other components is avoided, for example, the damage of the welding points between the pole post assembly and the battery cell is avoided, and the reliability and stability of the battery are improved.

[0025] According to the power consuming device of the third aspect of the embodiment of the present disclosure, the battery is the battery of the second aspect of the embodiment of the present disclosure.

[0026] According to the power consuming device of the embodiment of the present disclosure, by arranging the battery, the pole post assembly of the battery cannot rotate relative to the cover plate in the circumferential direction, the damage of the welding points between the pole post assembly and other components caused by the rotation of the pole post is avoided, the battery has high reliability and stability, and the reliability and stability of the power consuming device are improved.

[0027] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and / or additional aspects and advantages of the present disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0029] FIG. 1 is a schematic view of a battery cover plate assembly according to some embodiments of the present disclosure;

[0030] FIG. 2 is an exploded view of the cover plate in FIG. 1;

[0031] FIG. 3 is an exploded view of the battery cover plate assembly in FIG. 1;

[0032] FIG. 4 is a schematic view of a battery according to some embodiments of the present disclosure;

[0033] FIG. 5 is a partial cross-sectional schematic view of a battery according to some embodiments of the present disclosure;

[0034] FIG. 6 is a schematic view of a power consuming device according to some embodiments of the present disclosure.

[0035] 100, battery cover plate assembly; 10, cover plate; 11, cover plate body; 12, first insulation piece; 13a, first anti-rotation structure; 13, first anti-rotation protrusion; 14, first mounting groove; 15, first bottom wall; 16, second mounting groove; 17, second bottom wall; 18a, third anti-rotation structure; 18, second anti-rotation protrusion; 19a, fourth anti-rotation structure; 19, second anti-rotation groove; 20, second insulation piece; 22, sealing ring; 23, positioning protrusion; 24, positioning groove; 25, first surface; 26, second surface; 30, pole post assembly; 301, outer peripheral wall; 31a, second anti-rotation structure; 31, first anti-rotation groove; 32, pole post; 33, riveting block; 34, first side; 35, second side; 36, limiting flange; 200, battery; 201, battery shell; 202, battery cell; 300, electrical equipment. DETAILED DESCRIPTION

[0036] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, in which the same or similar components have the same or similar designations and functions throughout. The embodiments described below are exemplary and are merely intended to explain the present disclosure, and should not be understood as limiting the present disclosure.

[0037] A battery cover plate assembly 100 according to an embodiment of the present disclosure is described below with reference to FIGS. 1-3, which is applied to a battery 200.

[0038] Referring to FIGS. 1-3, the battery cover plate assembly 100 according to an embodiment of the present disclosure includes a cover plate 10 and a pole post assembly 30, which is disposed through the cover plate 10. One of the cover plate 10 and the outer peripheral wall 301 of the pole post assembly 30 is formed with a first anti-rotation structure 13a, and the other is formed with a second anti-rotation structure 31a that cooperates with the first anti-rotation structure 13a.

[0039] For example, the cover plate 10 is formed with the first anti-rotation structure 13a, and the outer peripheral wall 301 of the pole post assembly 30 is formed with the second anti-rotation structure 31a. When the battery cover plate assembly 100 is assembled, the first anti-rotation structure 13a on the cover plate 10 cooperates with the second anti-rotation structure 31a on the outer peripheral wall 301 of the pole post assembly 30. When the pole post assembly 30 attempts to rotate along the circumferential direction of the pole post assembly 30 relative to the cover plate 10, the circumferential rotation of the pole post assembly 30 is prevented due to the cooperation of the first anti-rotation structure 13a on the cover plate 10 and the second anti-rotation structure 31a on the outer peripheral wall 301 of the pole post assembly 30, thereby achieving the anti-rotation effect of the pole post assembly 30. The rotation of the pole post assembly 30 is avoided, which prevents the damage of the welding points between the pole post assembly 30 and other components, such as the welding points between the pole post assembly 30 and the battery cell, thereby improving the reliability and stability of the battery 200.

[0040] According to the battery cover plate assembly 100 of the embodiments of the present disclosure, by forming the first anti-rotation structure 13a on one of the cover plate 10 and the outer peripheral wall 301 of the pole assembly 30 and the second anti-rotation structure 31a cooperating with the first anti-rotation structure 13a on the other, the pole assembly 30 is limited in the circumferential direction relative to the cover plate 10. The rotation of the pole assembly 30 is avoided, which causes damage to the welding points between the pole assembly 30 and other components, for example, the welding points between the pole assembly 30 and the battery cell, thereby improving the reliability and stability of the battery 200.

[0041] According to some embodiments of the present disclosure, referring to FIGS. 1-3, the first anti-rotation structure 13 includes a first anti-rotation protrusion 13, and the second anti-rotation structure includes a first anti-rotation groove 31, and the first anti-rotation protrusion 13 and the first anti-rotation groove 31 are connected in cooperation. For example, the first anti-rotation protrusion 13 is formed on the cover plate 10, and the first anti-rotation groove 31 is formed on the pole assembly 30, and when the pole assembly 30 attempts to rotate in the circumferential direction relative to the cover plate 10, the first anti-rotation protrusion 13 is accommodated in the first anti-rotation groove 31, which prevents the rotation of the pole assembly 30 relative to the cover plate 10, achieving the effect of anti-rotation.

[0042] According to some embodiments of the present disclosure, referring to FIGS. 1-3, along the circumference of the pole assembly 30, the first anti-rotation protrusion 13 and / or the first anti-rotation groove 31 are a plurality of spaced arrangements, and the first anti-rotation protrusion 13 and the first anti-rotation groove 31 correspond to each other. For example, the first anti-rotation protrusion 13 and the first anti-rotation groove 31 are both a plurality of spaced arrangements along the circumference of the pole assembly 30, and the number of the first anti-rotation protrusion 13 and the first anti-rotation groove 31 is the same and corresponds one by one. For example, the number of the first anti-rotation protrusion 13 can be four, and the number of the first anti-rotation groove 31 is also four, and the four first anti-rotation protrusions 13 are accommodated in the four first anti-rotation grooves 31, respectively. By making the first anti-rotation protrusion 13 and the first anti-rotation groove 31 both a plurality of spaced arrangements along the circumference of the pole assembly 30, the force of the limiting can be increased, and the limiting of the pole assembly 30 relative to the cover plate 10 in the circumferential direction is more sufficient, achieving a more reliable anti-rotation effect of the pole assembly 30.

[0043] It should be noted that the "plurality" in the present disclosure refers to two or more.

[0044] According to some embodiments of the present disclosure, referring to FIGS. 1-3, the cover plate 10 includes a cover plate body 11 which is an electrically conductive member, and a first insulating member 12, and the pole assembly 30 is disposed through the cover plate body 11, for example, the pole assembly 30 is disposed through the cover plate body 11 and the first insulating member 12. The first insulating member 12 is disposed between the pole assembly 30 and the cover plate body 11, for example, at least part of the first insulating member 12 is located on the side of the cover plate body 11 facing outside the battery case 201. The first anti-rotation protrusion 13 is formed on the first insulating member 12, and the first anti-rotation groove 31 is formed on the outer peripheral wall 301 of the pole assembly 30. By disposing the first insulating member 12 between the cover plate body 11 and the pole assembly 30, the insulation between the cover plate 10 and the pole assembly 30 can be ensured, making the battery 200 safer. By forming the first anti-rotation protrusion 13 on the first insulating member 12, the first anti-rotation protrusion 13 on the cover plate 10 cooperates with the first anti-rotation groove 31 on the pole assembly 30, which can limit the pole assembly 30 relative to the cover plate 10 in the circumferential direction, achieving the effect of preventing the pole assembly 30 from rotating.

[0045] According to some embodiments of the present disclosure, referring to FIGS. 1 and 3, the pole assembly 30 includes a pole 32 and a riveting block 33, both of which are metal members and have electrical conductivity. The pole 32 has a first side 34 and a second side 35 which are oppositely arranged along the thickness direction of the cover plate body 11, wherein the second side 35 is located inside the battery case 201, the battery cover plate assembly 100 constitutes part of the battery case 201, and the battery case 201 is used to accommodate the battery cell 202. The riveting block 33 is connected to the first side 34, for example, the riveting block 33 can be riveted, threaded or welded to the first side 34 of the pole 32.

[0046] The first mounting groove 14 is formed on the first insulating member 12, and the riveting block 33 is installed in the first mounting groove 14. By providing the first mounting groove 14 on the first insulating member 12 for mounting the riveting block 33, the riveting block 33 is accommodated in the first mounting groove 14, which can limit the riveting block 33 and facilitate the installation and positioning of the riveting block 33 and the entire pole assembly 30. The riveting block 33 is connected to the first side 34 of the pole 32, and after the pole 32 is installed, the pole 32 is connected to the riveting block 33. The riveting block 33 can limit the pole 32 in the axial direction of the pole 32, preventing the pole 32 from moving in the axial direction of the pole 32 towards the inside of the battery case 201.

[0047] The bottom wall of the first mounting groove 14 is a first bottom wall 15, the pole post 32 passes through the first bottom wall 15 and the cover plate body 11, the outer peripheral wall of the riveting block 33 is formed with a first anti-rotation groove 31, and the inner peripheral wall of the first mounting groove 14 is formed with a first anti-rotation protrusion 13. By matching the first anti-rotation groove 31 on the riveting block 33 with the first anti-rotation protrusion 13 on the first insulating piece 12, the pole post assembly 30 can be limited in the circumferential direction relative to the cover plate 10, so as to achieve the anti-rotation effect of the pole post assembly 30.

[0048] According to some embodiments of the present disclosure, referring to FIG. 1, the first anti-rotation protrusion 13 is connected with the first bottom wall 15, and the first anti-rotation groove 31 penetrates the surface of the riveting block 33 facing the first bottom wall 15. By connecting the first anti-rotation protrusion 13 with the first bottom wall 15, the structural strength of the bottom wall of the first insulating piece 12 can be enhanced, and at the same time, the first anti-rotation groove 31 penetrates the surface of the riveting block 33 facing the first bottom wall 15, so that when the riveting block 33 and the first insulating piece 12 are assembled, the first anti-rotation protrusion 13 can be conveniently accommodated into the first anti-rotation groove 31, and the assembly process is more convenient.

[0049] According to some embodiments of the present disclosure, referring to FIG. 3, the outer contour of the riveting block 33 in the thickness direction of the cover plate body 11 and the outer contour of the first insulating piece 12 in the thickness direction of the cover plate body 11 are both circular, and the ratio of the radius of the outer contour of the riveting block 33 in the thickness direction of the cover plate body 11 to the radius of the outer contour of the first insulating piece 12 in the thickness direction of the cover plate body 11 ranges from 0.75 to 0.95, for example, the ratio is 0.75, 0.80, 0.85, 0.90, 0.95, etc. By limiting the ratio of the radius of the outer contour of the riveting block 33 in the thickness direction of the cover plate body 11 to the radius of the outer contour of the first insulating piece 12 in the thickness direction of the cover plate body 11 to be 0.75-0.95, the conductive performance of the riveting block 33 and the sealing and insulation effect of the first insulating piece 12 can be better balanced.

[0050] According to some embodiments of the present disclosure, referring to FIG. 1 and FIG. 3, one of the outer peripheral walls of the cover plate body 11 and the first insulating piece 12 is formed with a third anti-rotation structure 18a, and the other is formed with a fourth anti-rotation structure 19a matched with the third anti-rotation structure 18a, so as to limit the rotation of the first insulating piece 12 relative to the cover plate body 11.

[0051] According to some embodiments of the present disclosure, referring to FIGS. 1-3, the third anti-rotation structure 18a includes a second anti-rotation protrusion 18, and the fourth anti-rotation structure 19a includes a second anti-rotation groove 19, and the second anti-rotation protrusion 18 and the second anti-rotation groove 19 are in matching connection. By forming the second anti-rotation protrusion 18 on one of the cover plate body 11 and the outer circumferential wall of the first insulating piece 12 and the second anti-rotation groove 19 matched with the second anti-rotation protrusion 18 on the other, the second anti-rotation groove 19 and the second anti-rotation protrusion 18 are matched when the cover plate 10 is installed, the first insulating piece 12 is limited in the circumferential direction relative to the cover plate body 11, so as to achieve the effect of preventing the first insulating piece 12 from rotating relative to the cover plate body 11. At the same time, the riveting block 33 is limited in the circumferential direction relative to the first insulating piece 12, and thus the riveting block 33 is limited in the circumferential direction relative to the cover plate body 11. The riveting block 33 is riveted to the pole 32, and thus the pole 32 is limited in the circumferential direction relative to the cover plate body 11, so as to achieve the effect of preventing the pole 32 from rotating.

[0052] According to some embodiments of the present disclosure, the cover plate body 11 is formed with a second installation groove 16, and the first insulating piece 12 is installed in the second installation groove 16. By providing the second installation groove 16 on the cover plate body 11 for installing the first insulating piece 12, the installation and positioning of the first insulating piece 12 are facilitated. The bottom wall of the second installation groove 16 is a second bottom wall 17, the pole 32 passes through the first bottom wall 15 and the second bottom wall 17, the outer circumferential wall of the first insulating piece 12 is formed with the second anti-rotation groove 19, and the inner circumferential wall of the second installation groove 16 is formed with the second anti-rotation protrusion 18 matched with the second anti-rotation groove 19. By providing the second anti-rotation groove 19 on the outer circumferential wall of the first insulating piece 12, the second anti-rotation groove 19 on the first insulating piece 12 and the second anti-rotation protrusion 18 on the cover plate body 11 are matched when the cover plate 10 is installed, the first insulating piece 12 is limited in the circumferential direction relative to the cover plate body 11, so as to achieve the effect of preventing the first insulating piece 12 from rotating relative to the cover plate body 11. At the same time, the riveting block 33 is limited in the circumferential direction relative to the first insulating piece 12, and thus the riveting block 33 is limited in the circumferential direction relative to the cover plate body 11. The riveting block 33 is riveted to the pole 32, and thus the pole 32 is limited in the circumferential direction relative to the cover plate body 11, so as to achieve the effect of preventing the pole 32 from rotating.

[0053] According to some embodiments of the present disclosure, referring to FIG. 3, the second anti-rotation protrusions 18 and / or the second anti-rotation grooves 19 are spaced along the circumference of the pole assembly 30, and the second anti-rotation protrusions 18 and the second anti-rotation grooves 19 correspond to each other. For example, the second anti-rotation protrusions 18 and the second anti-rotation grooves 19 are both spaced along the circumference of the pole assembly 30, and the number of the second anti-rotation protrusions 18 is the same as the number of the second anti-rotation grooves 19, and each second anti-rotation protrusion 18 corresponds to a second anti-rotation groove 19. For example, the number of the second anti-rotation protrusions 18 can be four, and the number of the second anti-rotation grooves 19 can also be four, and each of the four second anti-rotation protrusions 18 is accommodated in a second anti-rotation groove 19. By spacing the second anti-rotation protrusions 18 and the second anti-rotation grooves 19 along the circumference of the pole assembly 30, the limiting force can be increased, and the first insulating member 12 can be more fully limited relative to the cover body 11, achieving a more reliable anti-rotation effect of the pole 32.

[0054] According to some embodiments of the present disclosure, referring to FIG. 3, the second anti-rotation grooves 19 and the first anti-rotation protrusions 13 are arranged in the thickness direction of the cover body 11. By arranging the second anti-rotation grooves 19 and the first anti-rotation protrusions 13 in the axial direction of the first insulating member 12, the first anti-rotation protrusions 13 can be arranged near the position where the second anti-rotation grooves 19 are arranged on the first insulating member 12, and the first anti-rotation protrusions 13 can play a reinforcing role, so that the structural strength near the second anti-rotation grooves 19 is higher, and deformation is reduced.

[0055] According to some embodiments of the present disclosure, referring to FIG. 1, the cover 10 includes a second insulating member 20, and the cover body 11 includes a first surface 25 and a second surface 26 arranged opposite in the thickness direction, the first insulating member 12 is connected to the first surface 25, and the second insulating member 20 is connected to the second surface 26. By arranging the second insulating member 20 on the side of the cover body 11 facing the battery case 201, the cover body 11 and the pole 32 can be insulated in the direction of the second side 35, and the battery 200 will not cause harm to the user or other elements due to the charging of the shell, making the battery 200 safer.

[0056] The pole assembly 30 includes a limiting flange 36 arranged on the second side 35 of the pole 32. The limiting flange 36 is connected to the side of the second insulating member 20 away from the second surface 26. By arranging the limiting flange 36 on the second side 35 of the pole 32, the pole 32 can be limited in the axial direction of the pole 32, and the pole 32 will not move in the axial direction to the first side 34. Through the joint action of the limiting flange 36 and the riveting block 33 described above, the pole assembly 30 can be limited in the axial direction of the pole 32.

[0057] The battery cover plate assembly 100 further comprises a sealing ring 22 arranged between the first insulating member 12 and the second insulating member 20 and insulating the pole 32 from the cover plate body 11. The sealing ring 22 is sleeved on the outer circumferential side of the pole 32 and located between the pole 32 and the cover plate body 11. The sealing ring 22 is an insulating member and can play a sealing and insulating role between the pole 32 and the cover plate body 11. The sealing ring 22 is sleeved on the outer circumferential side of the pole 32 and cooperates with the first insulating member 12 and the cover plate body 11, so that the sealing ring 22 is pressed and the pole 32 and the cover plate body 11 are sealed and insulated, preventing dust or liquid in the external air from entering the battery 200.

[0058] According to some embodiments of the present disclosure, with reference to FIGS. 1-3, the cover plate 10 comprises a second insulating member 20, the cover plate body 11 comprises a first surface 25 and a second surface 26 oppositely arranged along the thickness direction, the second insulating member 20 is connected with the second surface 26, and the pole assembly 30 is arranged through the cover plate body 11 and the second insulating member 20. By arranging the second insulating member 20 on the side of the cover plate body 11 facing the battery shell 201, the cover plate body 11 and the pole 32 can be insulated in the direction of the second side 35, and the battery 200 will not cause harm to the user or other elements due to the electrification of the shell, so that the battery 200 is safer.

[0059] The second insulating member 20 and the cover plate body 11 are formed with a positioning protrusion 23 on one of them and a positioning groove 24 matched with the positioning protrusion 23 on the other. For example, the second insulating member 20 is formed with the positioning protrusion 23, and the cover plate body 11 is formed with the positioning groove 24. When the cover plate 10 is installed, the positioning protrusion 23 of the second insulating member 20 is accommodated in the positioning groove 24 on the cover plate body 11. By forming the positioning protrusion 23 on one of the second insulating member 20 and the cover plate body 11 and the positioning groove 24 matched with the positioning protrusion 23 on the other, the second insulating member 20 can be positioned relative to the cover plate body 11, facilitating the assembly and positioning between the second insulating member 20 and the cover plate body 11.

[0060] For example, in the examples of FIGS. 2 and 3, the second insulating member 20 is formed with a plurality of (for example, three) positioning protrusions 23, and the second insulating member 20 can be circular. The cover plate body 11 can also be circular, and the plurality of positioning protrusions 23 are arranged at intervals along the circumference of the second insulating member 20. The cover plate body 11 is formed with a plurality of (for example, three) positioning grooves 24, and the plurality of positioning grooves 24 are arranged at intervals along the circumference of the cover plate body 11. When the second insulating member 20 and the cover plate body 11 are assembled, the plurality of positioning protrusions 23 on the second insulating member 20 are accommodated in the plurality of positioning grooves 24 on the cover plate body 11, respectively, facilitating the assembly of the second insulating member 20 to the cover plate body 11.

[0061] Referring to FIGS. 4 and 5, the battery 200 according to the second aspect of the embodiments of the present disclosure includes: a battery shell 201 and a battery cell 202, the battery shell 201 includes the battery cover plate assembly 100 according to the first aspect of the embodiments of the present disclosure, and the battery cell 202 is arranged in the battery shell 201 and is electrically connected with the pole assembly 30.

[0062] For example, the battery cell 202 can be electrically connected with the pole assembly 30 through a current collector, the tab of the battery cell 202 is welded with the current collector, and the pole assembly 30 is welded with the current collector. When the pole assembly 30 includes the riveting block 33 and the pole 32 as described above, the second side 35 of the pole 32 is electrically connected with the battery cell 202, for example, the second side 35 of the pole 32 is welded with the current collector, and the current collector is welded with the tab of the battery cell 202.

[0063] The battery 200 according to the embodiments of the present disclosure, by arranging the battery cover plate assembly 100 as described above, makes the pole assembly 30 and the cover plate 10 have a limiting structure, and the pole 32 cannot rotate relative to the cover plate 10 in the circumferential direction. Avoids the damage of the welding points between the pole assembly 30 and other components caused by the rotation of the pole assembly 30, for example, avoids the damage of the welding points between the pole assembly 30 and the battery cell 202, and improves the reliability and stability of the battery 200.

[0064] Referring to FIG. 6, the power consuming device 300 according to the third aspect of the embodiments of the present disclosure includes: a battery according to the second aspect of the embodiments of the present disclosure. For example, the power consuming device 300 can be an electric vehicle.

[0065] The power consuming device 300 according to the embodiments of the present disclosure, by arranging the battery 200 as described above, makes the pole assembly 30 of the battery 200 not rotate relative to the cover plate 10 in the circumferential direction, avoids the damage of the welding points between the pole assembly 30 and other components caused by the rotation of the pole 32, makes the battery have higher reliability and stability, and improves the reliability and stability of the power consuming device 300.

[0066] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0067] In the description of the disclosure, "first feature", "second feature" can include one or more of the features.

[0068] In the description of the disclosure, the meaning of "a plurality of" is two or more.

[0069] In the description of the disclosure, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0070] In the description of the disclosure, "on", "above" and "over" the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0071] In the description of the disclosure, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like 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 disclosure. In the description of the disclosure, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the disclosure have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the disclosure, and the scope of the disclosure is defined by the claims and their equivalents.

Claims

1. A battery cover plate assembly (100), wherein, The utility model relates to a cover plate (10) and a pole assembly (30) penetrating the cover plate (10), wherein the cover plate (10) and the pole assembly (30) are provided with a first anti-rotation structure (13a) and a second anti-rotation structure (31a) respectively, and the first anti-rotation structure (13a) and the second anti-rotation structure (31a) are matched to limit the rotation of the pole assembly (30) relative to the cover plate (10). The first anti-rotation structure (13a) comprises a first anti-rotation protrusion (13), and the second anti-rotation structure (31a) comprises a first anti-rotation groove (31), and the first anti-rotation protrusion (13) and the first anti-rotation groove (31) are matched and connected. Along the circumference of the pole assembly (30), the first anti-rotation protrusion (13) and / or the first anti-rotation groove (31) are arranged in multiple intervals, and the first anti-rotation protrusion (13) and the first anti-rotation groove (31) are correspondingly matched. The cover plate (10) comprises a cover plate body (11) and a first insulating piece (12), the cover plate body (11) is an electrically conductive piece, the pole assembly (30) penetrates the cover plate body (11), the first insulating piece (12) is arranged between the pole assembly (30) and the cover plate body (11), the first insulating piece (12) is provided with the first anti-rotation protrusion (13), and the outer circumferential wall (301) of the pole assembly (30) is provided with the first anti-rotation groove (31).

2. The battery cover plate assembly (100) of claim 1, wherein, The pole assembly (30) comprises a pole (32) and a riveting block (33), the pole (32) has a first side (34) and a second side (35) arranged oppositely along the thickness direction of the cover plate body (11), the riveting block (33) is connected to the first side (34), the first insulating piece (12) is provided with a first mounting groove (14), the riveting block (33) is mounted in the first mounting groove (14), the outer circumferential wall of the riveting block (33) is provided with the first anti-rotation groove (31), and the inner circumferential wall of the first mounting groove (14) is provided with the first anti-rotation protrusion (13).

3. The battery cover plate assembly (100) of claim 2, wherein, The bottom wall of the first mounting groove (14) is a first bottom wall (15), the first anti-rotation protrusion (13) is connected to the first bottom wall (15), and the first anti-rotation groove (31) penetrates the surface of the riveting block (33) facing the first bottom wall (15).

4. The battery cover plate assembly (100) according to claim 2 or 3, wherein, The outer contour of the riveting block (33) in the thickness direction of the cover plate body (11) and the outer contour of the first insulating piece (12) in the thickness direction of the cover plate body (11) are both circular, and the ratio of the radius of the outer contour of the riveting block (33) in the thickness direction of the cover plate body (11) to the radius of the outer contour of the first insulating piece (12) in the thickness direction of the cover plate body (11) ranges from 0.75 to 0.

95.

5. The battery cover plate assembly (100) of claim 4, wherein, ​ 6. The battery cover plate assembly (100) of claim 5, wherein, ​ 7. The battery cover plate assembly (100) according to claim 5 or 6, wherein ​ 8. The battery cover plate assembly (100) according to any one of claims 4-7, wherein, The third anti-rotation structure (18a) is formed on one of the outer peripheral walls of the first insulating member (12) and the fourth anti-rotation structure (19a) is formed on the other outer peripheral wall to cooperate with the third anti-rotation structure (18a) for limiting rotation of the first insulating member (12) relative to the cover plate body (11).

9. The battery cover plate assembly (100) of claim 8, wherein, The third anti-rotation structure (18a) comprises a second anti-rotation protrusion (18) and the fourth anti-rotation structure (19a) comprises a second anti-rotation groove (19), and the second anti-rotation protrusion (18) and the second anti-rotation groove (19) are connected in cooperation.

10. The battery cover plate assembly (100) of claim 9, wherein, The cover plate body (11) is provided with a second mounting groove (16), the first insulating member (12) is mounted in the second mounting groove (16), the outer peripheral wall of the first insulating member (12) is provided with the second anti-rotation groove (19), and the inner peripheral wall of the second mounting groove (16) is provided with the second anti-rotation protrusion (18).

11. The battery cover plate assembly (100) according to claim 9 or 10, wherein, Along the circumference of the pole assembly (30), the second anti-rotation protrusions (18) and / or the second anti-rotation grooves (19) are arranged in multiple intervals, and the second anti-rotation protrusions (18) and the second anti-rotation grooves (19) correspond to each other.

12. The battery cover plate assembly (100) of claim 11, wherein, The second anti-rotation groove (19) and the first anti-rotation protrusion (13) are arranged in correspondence in the thickness direction of the cover plate body (11).

13. The battery cover plate assembly (100) according to any one of claims 4-12, wherein, The cover plate (10) comprises a second insulating member (20), the cover plate body (11) comprises a first surface (25) and a second surface (26) arranged oppositely in the thickness direction, the first insulating member (12) is connected to the first surface (25), the second insulating member (20) is connected to the second surface (26), the pole assembly (30) further comprises a limiting flange (36), the limiting flange (36) is arranged on the second side (35) of the pole (32), the limiting flange (36) is connected to the side of the second insulating member (20) away from the second surface (26), and the battery cover plate assembly (100) further comprises a sealing ring (22), the sealing ring (22) is arranged between the first insulating member (12) and the second insulating member (20) and insulates and separates the pole (32) from the cover plate body (11).

14. The battery cover plate assembly (100) according to any one of claims 1-12, wherein, The cover plate (10) comprises a second insulating member (20), the cover plate body (11) comprises a first surface (25) and a second surface (26) arranged oppositely in the thickness direction, the second insulating member (20) is connected to the second surface (26), and the second insulating member (20) is formed with a positioning protrusion (23) on one of the cover plate body (11) and a positioning groove (24) cooperating with the positioning protrusion (23) on the other.

15. A battery (200), wherein, Comprise: A battery shell (201) comprising the battery cover plate assembly (100) according to any one of claims 1-14; A battery cell (202) arranged in the battery shell (201) and electrically connected to the pole assembly (30).

16. An electrical consumer (300), wherein Comprise: The battery (200) according to claim 15.

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