Battery cover plate assembly, battery and electric equipment

Abstract

The utility model discloses a battery cover plate assembly, a battery and electric equipment, the battery cover plate assembly comprises a cover plate and a pole assembly, and the pole assembly penetrates through the cover plate. Wherein a first anti-rotation structure is formed on one of the outer peripheral walls of the cover plate and the pole assembly, and a second anti-rotation structure matched with the first anti-rotation structure is formed on the other one of the outer peripheral walls of the cover plate and the pole assembly. According to the battery cover plate assembly disclosed by the embodiment of the utility model, the first anti-rotation structure is arranged on one of the outer peripheral walls of the cover plate and the pole assembly, and the second anti-rotation structure is arranged on the other one of the outer peripheral walls of the cover plate and the pole assembly, so that the pole assembly can be limited along the circumferential direction relative to the cover plate through the matching of the first anti-rotation structure and the second anti-rotation structure; the pole assembly is prevented from rotating, damage to welding points between the pole assembly and other parts caused by rotation of the pole assembly is avoided, for example, damage to the welding points between the pole assembly and a battery cell is avoided, and the reliability and stability of the battery are improved.

Description

Technical Field

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

[0002] In recent years, batteries have been widely used in electric vehicles and other fields as new energy sources. In batteries, the pole is connected to the battery cell and is an important part of the battery. However, in related technologies, due to the limitation of the assembly method of the pole and the battery cover, the pole is prone to rotation. Once the pole rotates, the welding point between the pole and other components may be damaged by torsional force, which eventually leads to an increase in the internal resistance of the battery or even damage to the battery. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose a battery cover assembly. One of the cover plate and the pole assembly of the battery cover assembly is provided with a first anti-rotation structure and the other is provided with a second anti-rotation structure. After the battery cover assembly is assembled, the first anti-rotation structure cooperates with the second anti-rotation structure to limit the circumferential position of the pole assembly relative to the cover plate, so that the pole assembly cannot rotate circumferentially relative to the cover plate, thereby avoiding the rotation of the pole assembly and causing damage to the welding points between the pole assembly and other components, such as avoiding damage to the welding points between the pole assembly and the battery cell, thereby improving the reliability and stability of the battery.

[0004] The utility model also provides a battery with the battery cover assembly.

[0005] The utility model also provides an electrical device having the battery.

[0006] According to the first aspect of the present invention, the battery cover plate assembly includes: a cover plate; a pole assembly, wherein the pole assembly is inserted through the cover plate; wherein a first anti-rotation structure is formed on one of the outer peripheral walls of the cover plate and the pole assembly, and a second anti-rotation structure cooperating with the first anti-rotation structure is formed on the other.

[0007] According to the battery cover plate assembly of the embodiment of the utility model, by providing a first anti-rotation structure in one of the cover plate and the pole assembly and a second anti-rotation structure in 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 assembly in the circumferential direction relative to the cover plate, so that 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 due to rotation of the pole assembly, for example, avoiding damage to the welding points between the pole assembly and the battery cell, thereby improving the reliability and stability of the battery.

[0008] According to some embodiments of the present invention, the first anti-rotation structure includes a first anti-rotation protrusion, the second anti-rotation structure includes a first anti-rotation groove, and the first anti-rotation protrusion and the first anti-rotation groove are cooperatively connected.

[0009] According to some embodiments of the present invention, along the circumference of the pole assembly, a plurality of the first anti-rotation protrusions and / or the first anti-rotation grooves are arranged at intervals, and the first anti-rotation protrusions correspond to and cooperate with the first anti-rotation grooves.

[0010] According to some embodiments of the utility model, the cover plate includes a cover plate body and a first insulating member, the cover plate body is a conductive member, the pole assembly is passed through 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 peripheral wall of the pole assembly.

[0011] According to some embodiments of the utility model, the pole assembly includes a pole and a rivet block, the pole having a first side and a second side arranged opposite to each other along the thickness direction of the cover plate body, the rivet block is connected to the first side, a first mounting groove is formed on the first insulating member, the rivet block is installed in the first mounting groove, the first anti-rotation groove is formed on the outer peripheral wall of the rivet block, and the first anti-rotation protrusion is formed on the inner peripheral wall of the first mounting groove.

[0012] According to some embodiments of the present invention, the bottom wall of the first installation groove is the first bottom wall, the first anti-rotation protrusion is connected to the first bottom wall, and the first anti-rotation groove passes through the surface of the rivet block facing the first bottom wall.

[0013] According to some embodiments of the present invention, the outer contour of the rivet block projected along the thickness direction of the cover body and the outer contour of the first insulating member projected along the thickness direction of the cover body are both circular, and the ratio of the radius of the outer contour of the rivet block projected along the thickness direction of the cover body to the radius of the outer contour of the first insulating member projected along the thickness direction of the cover body is in the range of 0.75 to 0.95.

[0014] According to some embodiments of the present invention, a third anti-rotation structure is formed on one of the outer peripheral walls of the cover body and the first insulating member, and a fourth anti-rotation structure cooperating with the third anti-rotation structure is formed on the other, so as to limit the rotation of the first insulating member relative to the cover body.

[0015] According to some embodiments of the present invention, the third anti-rotation structure includes a second anti-rotation protrusion, the fourth anti-rotation structure includes a second anti-rotation groove, and the second anti-rotation protrusion and the second anti-rotation groove are cooperatively connected.

[0016] According to some embodiments of the utility model, a second mounting groove is formed on the cover plate body, the first insulating member is installed in the second mounting groove, the outer peripheral wall of the first insulating member is formed with the second anti-rotation groove, and the inner peripheral wall of the second mounting groove is formed with the second anti-rotation protrusion.

[0017] According to some embodiments of the present invention, along the circumference of the pole assembly, a plurality of the second anti-rotation protrusions and / or the second anti-rotation grooves are arranged at intervals, and the second anti-rotation protrusions and the second anti-rotation grooves correspond to each other.

[0018] According to some embodiments of the present invention, the second anti-rotation groove and the first anti-rotation protrusion are correspondingly arranged in the thickness direction of the cover plate body.

[0019] According to some embodiments of the utility model, the cover plate includes a second insulating member, the cover plate body includes a first surface and a second surface arranged opposite to each other in the thickness direction, the first insulating member is connected to the first surface, and the second insulating member is connected to the second surface, the pole assembly also includes 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 facing away from the second surface, and the battery cover plate assembly also includes a sealing ring, which is arranged between the first insulating member and the second insulating member and insulates the pole from the cover plate body.

[0020] According to some embodiments of the utility model, the cover plate includes a second insulating member, the cover plate body includes a first surface and a second surface arranged opposite to each other along the thickness direction, the second insulating member is connected to the second surface, a positioning protrusion is formed on one of the second insulating member and the cover plate body, and a positioning groove matching the positioning protrusion is formed on the other.

[0021] The battery according to the second aspect of the present invention comprises: a battery housing, comprising a battery cover assembly according to the first aspect of the present invention; and a battery cell, disposed in the battery housing and electrically connected to the pole assembly.

[0022] According to the battery of the embodiment of the utility model, by setting the above-mentioned battery cover plate assembly, a limiting structure is provided between the pole assembly and the cover plate, and the pole cannot rotate relative to the cover plate in the circumferential direction. This avoids damage to the welding points between the pole assembly and other components caused by the rotation of the pole assembly, for example, avoids damage to the welding points between the pole assembly and the battery cell, thereby improving the reliability and stability of the battery.

[0023] The electrical equipment according to the embodiment of the third aspect of the utility model includes: the battery according to the embodiment of the second aspect of the utility model.

[0024] According to the electrical equipment of the embodiment of the utility model, by arranging the above-mentioned battery, the pole assembly of the battery will not rotate in the circumferential direction relative to the cover plate, thereby avoiding damage to the welding points between the pole assembly and other components caused by the rotation of the pole, so that the battery has higher reliability and stability, and the reliability and stability of the electrical equipment are improved.

[0025] 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

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a schematic diagram of a battery cover assembly according to some embodiments of the utility model;

[0028] Figure 2 yes Figure 1 Exploded view of the cover in;

[0029] Figure 3 yes Figure 1 Exploded view of the battery cover assembly in Figure 1.

[0030] Reference numerals:

[0031] 100. Battery cover assembly;

[0032] 10. cover plate; 11. cover plate body; 12. first insulating member; 13. first anti-rotation protrusion; 14. first mounting groove; 15. first bottom wall; 16. second mounting groove; 17. second bottom wall; 18. second anti-rotation protrusion; 19. second anti-rotation groove; 20. second insulating member; 22. sealing ring; 23. positioning protrusion; 24. positioning groove; 25. first surface; 26. second surface;

[0033] 30. Pole assembly; 31. First anti-rotation groove; 32. Pole; 33. Riveting block; 34. First side; 35. Second side; 36. Position-limiting flange. DETAILED DESCRIPTION

[0034] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Reference below Figure 1-Figure 3 A battery cover plate assembly 100 according to an embodiment of the present invention is described. The battery cover plate assembly 100 is applied to a battery.

[0036] Reference Figure 1-Figure 3 According to the battery cover assembly 100 of the embodiment of the utility model, it includes: a cover 10 and a pole assembly 30, and the pole assembly 30 is arranged through the cover 10. Among them, a first anti-rotation structure is formed on one of the outer peripheral walls of the cover 10 and the pole assembly 30, and a second anti-rotation structure cooperating with the first anti-rotation structure is formed on the other.

[0037] For example, a first anti-rotation structure is formed on the cover plate 10, and a second anti-rotation structure is formed on the outer peripheral wall of the pole assembly 30. When the battery cover plate assembly 100 is assembled, the first anti-rotation structure on the cover plate 10 cooperates with the second anti-rotation structure on the outer peripheral wall of the pole assembly 30. When the pole assembly 30 attempts to rotate along the circumference of the pole assembly 30 relative to the cover plate 10, the first anti-rotation structure on the cover plate 10 cooperates with the second anti-rotation structure on the outer peripheral wall of the pole assembly 30, which can prevent the pole assembly 30 from rotating in the circumferential direction, thereby achieving the effect of preventing the pole assembly 30 from rotating. The damage of the welding points between the pole assembly 30 and other components caused by the rotation of the pole assembly 30 is avoided, for example, the damage of the welding points between the pole assembly 30 and the battery cell is avoided, thereby improving the reliability and stability of the battery.

[0038] According to the battery cover plate assembly 100 of the embodiment of the utility model, a first anti-rotation structure is formed on one of the outer peripheral walls of the cover plate 10 and the pole assembly 30, and a second anti-rotation structure cooperating with the first anti-rotation structure is formed on the other, so that the pole assembly 30 is limited in the circumferential direction relative to the cover plate 10. The damage of the welding point between the pole assembly 30 and other components caused by the rotation of the pole assembly 30 is avoided, for example, the damage of the welding point between the pole assembly 30 and the battery cell is avoided, thereby improving the reliability and stability of the battery.

[0039] According to some embodiments of the present invention, reference Figure 1-Figure 3The first anti-rotation structure includes a first anti-rotation protrusion 13, and the second anti-rotation structure includes a first anti-rotation groove 31. The first anti-rotation protrusion 13 and the first anti-rotation groove 31 are matched and connected. 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. When the pole assembly 30 attempts to rotate relative to the cover plate 10 in the circumferential direction, the first anti-rotation protrusion 13 is accommodated in the first anti-rotation groove 31, preventing the pole assembly 30 from rotating relative to the cover plate 10, thereby achieving an anti-rotation effect.

[0040] According to some embodiments of the present invention, reference Figure 1-Figure 3 , along the circumference of the pole assembly 30, the first anti-rotation protrusions 13 and / or the first anti-rotation grooves 31 are multiple and spaced apart, and the first anti-rotation protrusions 13 correspond to the first anti-rotation grooves 31. For example, the first anti-rotation protrusions 13 and the first anti-rotation grooves 31 are multiple and spaced apart along the circumference of the pole assembly 30, and the number of the first anti-rotation protrusions 13 and the first anti-rotation grooves 31 are the same and correspond one to one. For example, the number of the first anti-rotation protrusions 13 can be four, and the number of the first anti-rotation grooves 31 is also four, and the four first anti-rotation protrusions 13 are respectively accommodated in the four first anti-rotation grooves 31. By making the first anti-rotation protrusions 13 and the first anti-rotation grooves 31 multiple and spaced apart along the circumference of the pole assembly 30, the strength of the limit can be increased, so that the limit of the pole assembly 30 relative to the cover plate 10 in the circumferential direction is more sufficient, and a more reliable anti-rotation effect of the pole assembly 30 is achieved.

[0041] It should be noted that the “plurality” mentioned in the present invention refers to two or more than two.

[0042] According to some embodiments of the present invention, reference Figure 1-Figure 3 The cover plate 10 includes a cover plate body 11 and a first insulating member 12. The cover plate body 11 is a conductive member. The pole assembly 30 is inserted through the cover plate body 11. For example, the pole assembly 30 is inserted through the cover plate body 11 and the first insulating member 12. The first insulating member 12 is arranged 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 the outside of the battery housing. A first anti-rotation protrusion 13 is formed on the first insulating member 12, and a first anti-rotation groove 31 is formed on the outer peripheral wall of the pole assembly 30. By arranging the first insulating member 12 between the cover plate body 11 and the pole assembly 30, insulation between the cover plate 10 and the pole assembly 30 can be ensured, making the battery safer. By forming a first anti-rotation protrusion 13 on the first insulating member 12 and matching the first anti-rotation protrusion 13 on the cover plate 10 with the first anti-rotation groove 31 on the pole assembly 30, the pole assembly 30 can be limited in the circumferential direction relative to the cover plate 10, thereby achieving the effect of preventing the pole assembly 30 from rotating.

[0043] According to some embodiments of the present invention, reference Figure 1 and Figure 3 The pole assembly 30 includes a pole 32 and a rivet block 33. Both the pole 32 and the rivet block 33 are metal parts and are conductive. The pole 32 has a first side 34 and a second side 35 that are relatively arranged along the thickness direction of the cover body 11, wherein the second side 35 is located inside the battery shell. The battery cover assembly 100 constitutes a part of the battery shell, and the battery shell is used to accommodate the battery cell. The rivet block 33 is connected to the first side 34. For example, the rivet block 33 and the first side 34 of the pole 32 can be riveted or threaded or welded.

[0044] Among them, a first mounting groove 14 is formed on the first insulating member 12, and the rivet block 33 is installed in the first mounting groove 14. By providing the first mounting groove 14 for installing the rivet block 33 on the first insulating member 12, the rivet block 33 is accommodated in the first mounting groove 14, and the rivet block 33 can be limited, which facilitates the installation and positioning of the rivet block 33 and the entire pole assembly 30. The rivet block 33 is connected to the first side 34 of the pole 32. After the pole 32 is installed, the pole 32 is connected to the rivet block 33. The rivet block 33 can limit the position of the pole 32 along the axial direction of the pole 32 to prevent the pole 32 from moving along the axial direction of the pole 32 toward the battery housing.

[0045] The bottom wall of the first installation groove 14 is the first bottom wall 15, the pole 32 is penetrated through the first bottom wall 15 and the cover 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 installation 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 member 12, the pole assembly 30 can be limited in the circumferential direction relative to the cover 10, so as to achieve the function of preventing the pole assembly 30 from rotating.

[0046] According to some embodiments of the present invention, reference Figure 1 The first anti-rotation protrusion 13 is connected to the first bottom wall 15, and the first anti-rotation groove 31 passes through the surface of the rivet block 33 facing the first bottom wall 15. By connecting the first anti-rotation protrusion 13 to the first bottom wall 15, the structural strength of the bottom wall of the first insulating member 12 can be enhanced, and at the same time, the first anti-rotation groove 31 passes through the surface of the rivet block 33 facing the first bottom wall 15. When the rivet block 33 and the first insulating member 12 are assembled, it is convenient to accommodate the first anti-rotation protrusion 13 in the first anti-rotation groove 31, making the assembly process more convenient.

[0047] According to some embodiments of the present invention, reference Figure 3, the outer contour of the orthogonal projection of the rivet block 33 along the thickness direction of the cover body 11 and the outer contour of the orthogonal projection of the first insulating member 12 along the thickness direction of the cover body 11 are both circular, and the ratio of the radius of the outer contour of the orthogonal projection of the rivet block 33 along the thickness direction of the cover body 11 to the radius of the outer contour of the orthogonal projection of the first insulating member 12 along the thickness direction of the cover body 11 is in the range of 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 orthogonal projection of the rivet block 33 along the thickness direction of the cover body 11 to the radius of the outer contour of the orthogonal projection of the first insulating member 12 along the thickness direction of the cover body 11 to 0.75 to 0.95, the conductive performance of the rivet block 33 and the sealing and insulating effect of the first insulating member 12 can be better taken into account.

[0048] According to some embodiments of the present invention, reference Figure 1 and Figure 3 A third anti-rotation structure is formed on one of the outer peripheral walls of the cover body 11 and the first insulating member 12, and a fourth anti-rotation structure cooperating with the third anti-rotation structure is formed on the other to limit the rotation of the first insulating member 12 relative to the cover body 11.

[0049] According to some embodiments of the present invention, reference Figure 1-Figure 3 , the third anti-rotation structure includes a second anti-rotation protrusion 18, and the fourth anti-rotation structure includes a second anti-rotation groove 19, and the second anti-rotation protrusion 18 and the second anti-rotation groove 19 are matched and connected. By forming the second anti-rotation protrusion 18 on one of the outer peripheral walls of the cover body 11 and the first insulating member 12 and forming the second anti-rotation groove 19 matched with the second anti-rotation protrusion 18 on the other, the second anti-rotation groove 19 can be matched with the second anti-rotation protrusion 18 when the cover 10 is installed, so that the first insulating member 12 is limited in the circumferential direction relative to the cover body 11, so as to achieve the function of preventing the first insulating member 12 from rotating relative to the cover body 11. At the same time, the rivet block 33 is limited in the circumferential direction with the first insulating member 12, so that the rivet block 33 is limited in the circumferential direction with respect to the cover body 11. The rivet block 33 is riveted to the pole 32, so that the pole 32 is limited in the circumferential direction relative to the cover body 11, so as to achieve the function of preventing the pole 32 from rotating.

[0050] According to some embodiments of the utility model, a second mounting groove 16 is formed on the cover body 11, and the first insulating member 12 is mounted in the second mounting groove 16. By providing the second mounting groove 16 for mounting the first insulating member 12 on the cover body 11, the installation and positioning of the first insulating member 12 is facilitated. The bottom wall of the second mounting groove 16 is the second bottom wall 17, and the pole 32 is penetrated through the first bottom wall 15 and the second bottom wall 17. The outer peripheral wall of the first insulating member 12 is formed with a second anti-rotation groove 19, and the inner peripheral wall of the second mounting groove 16 is formed with a second anti-rotation protrusion 18 that cooperates with the second anti-rotation groove 19. By providing the second anti-rotation groove 19 on the outer peripheral wall of the first insulating member 12, the second anti-rotation groove 19 on the first insulating member 12 can be matched with the second anti-rotation protrusion 18 on the cover body 11 when the cover 10 is installed, so that the first insulating member 12 is limited relative to the cover body 11 in the circumferential direction, so as to achieve the function of preventing the first insulating member 12 from rotating relative to the cover body 11. At the same time, the riveting block 33 and the first insulating member 12 are limited in the circumferential direction, so the riveting block 33 is limited in the circumferential direction relative to the cover body 11. The riveting block 33 is riveted to the pole 32, so the pole 32 is limited in the circumferential direction relative to the cover body 11 to achieve the function of preventing the pole 32 from rotating.

[0051] According to some embodiments of the present invention, reference Figure 3 , along the circumference of the pole assembly 30, the second anti-rotation protrusions 18 and / or the second anti-rotation grooves 19 are multiple and spaced apart, 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 multiple and spaced apart along the circumference of the pole assembly 30, and the number of the second anti-rotation protrusions 18 and the second anti-rotation grooves 19 are the same and correspond one to one. For example, the number of the second anti-rotation protrusions 18 can be four, and correspondingly, the number of the second anti-rotation grooves 19 can be four, and the four second anti-rotation protrusions 18 are respectively accommodated in the four second anti-rotation grooves 19. By making the second anti-rotation protrusions 18 and the second anti-rotation grooves 19 both spaced apart along the circumference of the pole assembly 30, the strength of the limit can be increased, so that the first insulating member 12 can be more fully limited relative to the cover body 11, and a more reliable anti-rotation effect of the pole 32 can be achieved.

[0052] According to some embodiments of the present invention, reference Figure 3 The second anti-rotation groove 19 and the first anti-rotation protrusion 13 are arranged correspondingly in the thickness direction of the cover body 11. By arranging the second anti-rotation groove 19 and the first anti-rotation protrusion 13 in the axial direction of the first insulating member 12 in a relative manner, the first anti-rotation protrusion 13 is arranged near the position where the second anti-rotation groove 19 is arranged on the first insulating member 12, and the first anti-rotation protrusion 13 can play a reinforcing role, so that the structural strength near the second anti-rotation groove 19 is higher and deformation is reduced.

[0053] According to some embodiments of the present invention, reference Figure 1 The cover plate 10 includes a second insulating member 20, the cover plate body 11 includes a first surface 25 and a second surface 26 arranged opposite to each other 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 plate body 11 facing the inside of the battery housing, the cover plate body 11 and the pole 32 can be insulated in the direction of the second side 35, and the battery will not cause harm to the user or other elements due to the charged shell, making the battery safer.

[0054] The pole assembly 30 includes a limiting flange 36, which is provided on the second side 35 of the pole 32. The limiting flange 36 is connected to the side of the second insulating member 20 that is away from the second surface 26. By providing 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 toward the first side 34 in the axial direction. Through the combined action of the limiting flange 36 and the above-mentioned riveting block 33, the pole assembly 30 can be limited in the axial direction of the pole 32.

[0055] The battery cover assembly 100 also includes a sealing ring 22, which is disposed between the first insulating member 12 and the second insulating member 20 and insulates the pole 32 from the cover body 11. The sealing ring 22 is sleeved on the outer peripheral side of the pole 32 and is located between the pole 32 and the cover body 11. The sealing ring 22 is an insulating member, and the sealing ring 22 can play a role in sealing and insulating between the pole 32 and the cover body 11. The sealing ring 22 is sleeved on the outer peripheral side of the pole 32, and cooperates with the first insulating member 12 and the cover body 11, so that the sealing ring 22 is squeezed, so that the pole 32 and the cover body 11 can be sealed and insulated, preventing dust or liquid in the outside air from entering the battery.

[0056] According to some embodiments of the present invention, reference Figure 1-Figure 3 The cover plate 10 includes a second insulating member 20, the cover plate body 11 includes a first surface 25 and a second surface 26 arranged opposite to each other in the thickness direction, the second insulating member 20 is connected to the second surface 26, and the pole assembly 30 is penetrated by 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 inside of the battery shell, the cover plate body 11 and the pole 32 can be insulated in the direction of the second side 35, and the battery will not cause harm to the user or other components due to the charged shell, making the battery safer.

[0057] Among them, a positioning protrusion 23 is formed on one of the second insulating member 20 and the cover body 11, and a positioning groove 24 that cooperates with the positioning protrusion 23 is formed on the other. For example, a positioning protrusion 23 is formed on the second insulating member 20, and a positioning groove 24 is formed on the cover body 11. When the cover 10 is installed, the positioning protrusion 23 of the second insulating member 20 is accommodated in the positioning groove 24 on the cover body 11. Since the positioning protrusion 23 is formed on one of the second insulating member 20 and the cover body 11, and the positioning groove 24 that cooperates with the positioning protrusion 23 is formed on the other, the second insulating member 20 can be positioned relative to the cover body 11, which facilitates the assembly and positioning between the second insulating member 20 and the cover body 11.

[0058] For example, in Figure 2 and Figure 3 In the example, a plurality of (for example, three) positioning protrusions 23 are formed on the second insulating member 20, the second insulating member 20 may be circular, the cover body 11 may also be circular, the plurality of positioning protrusions 23 are arranged at intervals along the circumference of the second insulating member 20, a plurality of (for example, three) positioning grooves 24 are formed on the cover body 11, the plurality of positioning grooves 24 are arranged at intervals along the circumference of the cover body 11, when the second insulating member 20 is assembled with the cover body 11, the plurality of positioning protrusions 23 on the second insulating member 20 are respectively accommodated in the plurality of positioning grooves 24 on the cover body 11, so as to facilitate the assembly of the second insulating member 20 to the cover body 11.

[0059] The battery according to the second aspect of the present invention comprises: a battery housing and a battery cell. The battery housing comprises the battery cover assembly 100 according to the first aspect of the present invention. The battery cell is disposed in the battery housing and is electrically connected to the pole assembly 30.

[0060] For example, the battery cell can be electrically connected to the pole assembly 30 through the current collecting plate, the pole lug of the battery cell is welded to the current collecting plate, and the pole assembly 30 is welded to the current collecting plate. When the pole assembly 30 includes the above-mentioned rivet block 33 and pole 32, the second side 35 of the pole 32 is electrically connected to the battery cell, for example, the second side 35 of the pole 32 is welded to the current collecting plate, and the current collecting plate is welded to the pole lug of the battery cell.

[0061] According to the battery of the embodiment of the utility model, by providing the battery cover plate assembly 100, a limiting structure is provided between the pole assembly 30 and the cover plate 10, and the pole 32 cannot rotate in the circumferential direction relative to the cover plate 10. This avoids damage to the welding points between the pole assembly 30 and other components caused by the rotation of the pole assembly 30, for example, damage to the welding points between the pole assembly 30 and the battery cell, thereby improving the reliability and stability of the battery.

[0062] The electric device according to the third aspect of the present invention comprises: the battery according to the second aspect of the present invention. For example, the electric device may be an electric vehicle.

[0063] According to the electrical equipment of the embodiment of the utility model, by setting the above-mentioned battery, the pole assembly 30 of the battery will not rotate in the circumferential direction relative to the cover plate 10, thereby avoiding damage to the welding points between the pole assembly 30 and other components caused by the rotation of the pole 32, so that the battery has higher reliability and stability, and the reliability and stability of the electrical equipment are improved.

[0064] 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.

[0065] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0066] In the description of the present invention, "plurality" means two or more.

[0067] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0068] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 representation of the above terms does not necessarily refer to 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.

[0070] 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 battery cover assembly, characterized in that: include: Cover plate; A pole assembly, wherein the pole assembly is passed through the cover plate; A first anti-rotation structure is formed on one of the cover plate and the outer peripheral wall of the pole assembly, and a second anti-rotation structure cooperating with the first anti-rotation structure is formed on the other to limit the rotation of the pole assembly relative to the cover plate.

2. The battery cover assembly according to claim 1, characterized in that: The first anti-rotation structure includes a first anti-rotation protrusion, the second anti-rotation structure includes a first anti-rotation groove, and the first anti-rotation protrusion and the first anti-rotation groove are cooperatively connected.

3. The battery cover assembly according to claim 2, characterized in that: Along the circumference of the pole assembly, there are a plurality of first anti-rotation protrusions and / or first anti-rotation grooves arranged at intervals, and the first anti-rotation protrusions correspond to and cooperate with the first anti-rotation grooves.

4. The battery cover assembly according to claim 2, characterized in that: The cover plate includes a cover plate body and a first insulating member, the cover plate body is a conductive member, the pole assembly is passed through 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 peripheral wall of the pole assembly.

5. The battery cover assembly according to claim 4, characterized in that: The pole assembly includes a pole and a rivet block, the pole having a first side and a second side arranged opposite to each other along the thickness direction of the cover plate body, the rivet block being connected to the first side, a first mounting groove being formed on the first insulating member, the rivet block being mounted in the first mounting groove, the first anti-rotation groove being formed on the outer peripheral wall of the rivet block, and the first anti-rotation protrusion being formed on the inner peripheral wall of the first mounting groove.

6. The battery cover assembly according to claim 5, characterized in that: The bottom wall of the first installation groove is a first bottom wall, the first anti-rotation protrusion is connected to the first bottom wall, and the first anti-rotation groove runs through the surface of the riveting block facing the first bottom wall.

7. The battery cover assembly according to claim 5, characterized in that: The outer contour of the rivet block projected along the thickness direction of the cover body and the outer contour of the first insulating member projected along the thickness direction of the cover body are both circular, and the ratio of the radius of the outer contour of the rivet block projected along the thickness direction of the cover body to the radius of the outer contour of the first insulating member projected along the thickness direction of the cover body is in the range of 0.75 to 0.

95.

8. The battery cover assembly according to claim 4, characterized in that: A third anti-rotation structure is formed on one of the outer peripheral walls of the cover body and the first insulating member, and a fourth anti-rotation structure cooperating with the third anti-rotation structure is formed on the other to limit the first insulating member from rotating relative to the cover body.

9. The battery cover assembly according to claim 8, characterized in that: The third anti-rotation structure includes a second anti-rotation protrusion, the fourth anti-rotation structure includes a second anti-rotation groove, and the second anti-rotation protrusion and the second anti-rotation groove are cooperatively connected.

10. The battery cover assembly according to claim 9, characterized in that: A second mounting groove is formed on the cover body, the first insulating member is mounted in the second mounting groove, the outer peripheral wall of the first insulating member is formed with the second anti-rotation groove, and the inner peripheral wall of the second mounting groove is formed with the second anti-rotation protrusion.

11. The battery cover assembly according to claim 9, characterized in that: Along the circumference of the pole assembly, a plurality of the second anti-rotation protrusions and / or the second anti-rotation grooves are arranged at intervals, and the second anti-rotation protrusions and the second anti-rotation grooves correspond to each other.

12. The battery cover assembly according to claim 11, characterized in that: The second anti-rotation groove and the first anti-rotation protrusion are correspondingly arranged in the thickness direction of the cover plate body.

13. The battery cover assembly according to any one of claims 4 to 12, characterized in that: The cover plate includes a second insulating member, the cover plate body includes a first surface and a second surface arranged opposite to each other in the thickness direction, the first insulating member is connected to the first surface, and the second insulating member is connected to the second surface, the pole assembly also includes 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 also includes a sealing ring, which is arranged between the first insulating member and the second insulating member and insulates the pole from the cover plate body.

14. The battery cover assembly according to claim 1, characterized in that: The cover plate includes a second insulating member, the cover plate body includes a first surface and a second surface arranged opposite to each other in the thickness direction, the second insulating member is connected to the second surface, a positioning protrusion is formed on one of the second insulating member and the cover plate body, and a positioning groove matching the positioning protrusion is formed on the other.

15. A battery, characterized in that: include: A battery housing, comprising a battery cover assembly according to any one of claims 1 to 14; The battery cell is disposed in the battery casing and is electrically connected to the pole assembly.

16. An electrical equipment, characterized in that: include: A battery according to claim 15.

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