A battery top cover assembly

Abstract

The utility model discloses a battery top cover assembly, the cover plate is provided with first pole hole, the main part of first pole structure is formed with first conductive boss and is provided with first step part around first conductive boss, first upper insulating part is set to the position of first pole hole at the cover plate front, and first upper insulating part is provided with first perforation corresponding with first pole hole, first fixed part is provided with first through -hole corresponding with first pole hole, the main part of first pole structure is at least partial and is set in first pole hole and first perforation, so that with one conductive boss leads out through first through -hole, first fixed part covers on first step part, and first fixed part and first step part are provided with first convex part and first recess respectively, first convex part is positioned in first recess, first fixed part still and the main part of first pole structure are connected and fixed. Its promoted the structural strength after the installation of pole on the cover plate, and the pole torsional resistance is enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of components for new energy vehicle batteries, and specifically relates to a battery top cover assembly. Background Technology

[0002] New energy vehicle batteries consist of cells, a casing, and a battery top cover. The cells are located inside the casing, and the battery top cover seals the casing to encapsulate the cells. The battery top cover consists of a top cover plate and terminals mounted on the top cover plate. Currently, the installation strength and torsional resistance of the terminals on the top cover plate are of great concern. In existing technologies, the structural strength of the terminals after installation on the top cover plate is relatively weak. Therefore, when this type of battery top cover is used in new energy vehicle batteries, the terminals are easily twisted, resulting in poor structural stability of the new energy battery. Therefore, improvements are urgently needed. Utility Model Content

[0003] The purpose of this utility model is to provide a battery top cover assembly to overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, the present invention provides a battery top cover assembly, comprising: Cover plate, wherein the cover plate is provided with a first pole post hole; The first pole post structure has a main body portion having a first conductive protrusion and a first step portion surrounding the first conductive protrusion. The first upper insulating member is disposed on the front side of the cover plate at the position of the first pole hole, and the first upper insulating member is provided with a first through hole corresponding to the first pole hole; The first fixing member is provided with a first through hole corresponding to the first pole hole; In this configuration, the main body of the first pole post structure is at least partially inserted into the first pole post hole and the first through hole so that the conductive protrusion is led out through the first through hole. The first fixing member covers the first step portion, and the first fixing member and the first step portion are respectively provided with a first protrusion and a first recess. The first protrusion is positioned in the first recess. The first fixing member is also connected to and fixed to the main body of the first pole post structure.

[0005] According to the battery top cover assembly described above, the first electrode structure includes a copper electrode and an aluminum electrode. The aluminum electrode includes a base, a first conductive protrusion is formed by extending axially on the base, and the first protrusion is disposed on the outer peripheral side of the base. The first recess is disposed on a first fixing member, and the base or each of the first protrusions is welded to the copper electrode to fix them to each other.

[0006] According to the battery top cover assembly described above, the first fixing member and the first step portion are respectively provided with a second protrusion and a second recess, and the second protrusion is positioned in the second recess.

[0007] According to the battery top cover assembly described above, the number of the first protrusion and the first recess are both set to be multiple and are spaced apart on a horizontal reference, so that a second recess is formed between each two adjacent first protrusions on the aluminum pole post, and a second protrusion is formed between each two adjacent first recesses on the first fixing member.

[0008] According to the battery top cover assembly described above, a connecting part is provided in the second recess, and the two sides of the connecting part are respectively connected to the adjacent first protrusion. A first connecting post is formed on the copper pole post, and a connecting hole corresponding to the first connecting post is formed on the connecting part. The first connecting post passes through the connecting hole and is riveted to the first riveting hole of the first fixing member.

[0009] According to the battery top cover assembly described above, at least one first connecting post is formed on the copper terminal post, and the first connecting post is riveted to the first riveting hole of the first fixing member.

[0010] According to the battery top cover assembly described above, the copper terminal post includes a connector and a first plate disposed on the outer peripheral wall of the connector and arranged in annular intervals or continuously. At least a portion of the connector is placed in the first terminal post hole. The base or each of the first protrusions is welded and fixed to the connector so that the aluminum terminal post and the connector form a main body. A first sealing ring is sleeved on the connector and the first sealing ring is clamped between the first plate and the back of the top cover.

[0011] According to the battery top cover assembly described above, it further includes a second pole post structure, a second upper insulating member, and a second fixing member. The cover plate is provided with a second pole post hole. The main body of the second pole post structure forms a second conductive boss and a second stepped portion surrounding the second conductive boss. The second upper insulating member is disposed on the front side of the cover plate at the position of the second pole post hole, and the second upper insulating member is provided with a second through hole corresponding to the second pole post hole. The second fixing member is provided with a second through hole corresponding to the second pole post hole. The main body of the second pole post structure is at least partially inserted into the second pole post hole and the second through hole so that the conductive boss is led out through the second through hole. The second fixing member covers the stepped portion. At least one second connecting post is formed on the main body of the second pole post structure. The second connecting post is riveted to the second riveting hole of the second fixing member. A second sealing ring is sleeved on the main body of the second pole post structure. The second sealing ring is clamped between the second plate of the second pole post structure and the back side of the top cover.

[0012] According to the battery top cover assembly described above, both the area with the first upper insulating member and the area with the second upper insulating member on the front side of the top cover are provided with annular retaining rings. The inner wall of each retaining ring is respectively attached to the outer peripheral wall of the first upper insulating member and the outer peripheral wall of the second upper insulating member. The outer peripheral wall of the first upper insulating member and the edge of the second upper insulating member are provided with annular positioning portions that are continuously arranged thereal. The annular positioning portions are provided with continuously arranged annular positioning grooves. Each retaining ring is respectively positioned in the annular positioning groove. The inner wall of each annular positioning wall is respectively attached to the outer peripheral wall of the first fixing member and the outer peripheral wall of the second fixing member.

[0013] According to the battery top cover assembly described above, the retaining ring, annular positioning part, first pole hole, first through hole, first upper insulating member, first fixing member, and the main body of the first pole structure at the position of the first conductive boss are all polygonal structures at the positions of the first pole hole and the first through hole, and / or the retaining ring, annular positioning part, second pole hole, second through hole, second upper insulating member, second fixing member, and the main body of the second pole structure at the position of the second conductive boss are all polygonal structures at the positions of the second pole hole and the second through hole.

[0014] According to the battery top cover assembly described above, the first fixing member is further provided with a groove, and the first upper insulating member is provided with a protrusion corresponding to the position of the groove, the protrusion being adapted to fit into the groove.

[0015] The battery top cover assembly of this utility model has the following beneficial effects: The battery top cover assembly of this utility model improves the structural strength of the terminal post after it is installed on the cover plate, and at the same time enhances the torsional resistance of the terminal post, thereby improving the practicality of the structure. Attached Figure Description

[0016] Figure 1 This is a full sectional view of the battery top cover assembly in Embodiment 1.

[0017] Figure 2 This is a partial structural schematic diagram of Embodiment 1 (I).

[0018] Figure 3 This is a partial structural schematic diagram of Embodiment 1 (II).

[0019] Figure 4 This is an exploded view of the battery top cover assembly of Embodiment 1.

[0020] Figure 5 This is a schematic diagram of the first pole structure in Embodiment 1.

[0021] Figure 6 This is a schematic diagram of the structure of the first fastener in Embodiment 1 (I).

[0022] Figure 7This is a schematic diagram (II) of the structure of the first fastener in Embodiment 1.

[0023] Figure 8 This is a schematic diagram of the structure of the first upper insulating member in Embodiment 1.

[0024] Figure 9 This is a structural schematic diagram of the second fastener in Embodiment 1.

[0025] Figure 10 This is a schematic diagram of the aluminum electrode post in Example 1.

[0026] Figure 11 This is a schematic diagram of the battery top cover assembly in Embodiment 1.

[0027] Figure 12 This is a full sectional view of the battery top cover assembly in Embodiment 2.

[0028] Figure 13 This is a partial structural schematic diagram of Embodiment 2 (I).

[0029] Figure 14 This is a partial structural schematic diagram of Embodiment 2 (II).

[0030] Figure 15 This is an exploded view of the battery top cover assembly in Embodiment 2.

[0031] Figure 16 This is a schematic diagram of the first pole structure in Embodiment 2.

[0032] Figure 17 This is a schematic diagram of the structure of the first upper insulating component in Embodiment 2.

[0033] Figure 18 This is a schematic diagram of the structure of the first fastener in Embodiment 2 (I).

[0034] Figure 19 This is a schematic diagram of the structure of the first fastener in Embodiment 2 (II).

[0035] Figure 20 This is a schematic diagram of the aluminum electrode post in Example 2.

[0036] Figure 21 This is a schematic diagram of the battery top cover assembly in Embodiment 2.

[0037] Among them, 1. cover plate; 11. first pole post hole; 12. second pole post hole; 13. retaining ring; 2. First electrode post structure; 21. First conductive boss; 22. First protrusion; 23. Aluminum electrode post; 24. Copper electrode post; 25. Second recess; 231. Connecting part; 232. Connecting hole; 241. Connecting body; 242. First plate; 243. First connecting post; 244. Connecting piece; 3. First upper insulating component; 31. First through hole; 32. Annular positioning part; 33. Annular positioning groove; 4. First fastener; 41. First through hole; 42. First recess; 43. First riveting hole; 44. Second protrusion; 5. First sealing ring; 6. Second pole post structure; 61. Second conductive boss; 62. Second plate; 63. Second connecting post; 7. Second upper insulating component; 71. Second perforation; 8. Second fastener; 81. Second through hole; 82. Second riveting hole; 9. Second sealing ring; 10. Lower plastic sheet; 101. Mounting hole; 102. Annular groove; Detailed Implementation To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model, and the specific and direct descriptions of related structures are merely for the convenience of understanding the present utility model; the specific features do not necessarily or directly limit the scope of implementation of the present utility model. Conventional choices and substitutions made by those skilled in the art under the guidance of the present utility model should all be considered within the scope of protection claimed by this utility model.

[0038] Example 1: like Figures 1-11 As shown in the figure, the battery top cover assembly described in this embodiment includes a cover plate 1, a first terminal post structure 2, a first upper insulating member 3, a first fixing member 4, a second terminal post structure 6, a second upper insulating member 7, and a second fixing member 8. The first terminal post structure 2 is installed at one end of the cover plate 1 through the first upper insulating member 3 and the first fixing member 4, and the second terminal post structure 6 is installed at the other end of the cover plate 1 through the second upper insulating member 7 and the second fixing member 8. The specific installation structure is as follows.

[0039] In this embodiment, the cover plate 1 is provided with a first pole hole 11, which is located at one end of the cover plate 1 along its length, and the first pole hole 11 preferably has a square structure; the main body of the first pole structure 2 forms a first conductive boss 21 and a first step portion surrounding the first conductive boss 21, and the first conductive boss 21 preferably has a cylindrical structure; the first upper insulating member 3 is disposed on the front side of the cover plate 1 at the position of the first pole hole 11, and the first upper insulating member 3 is provided with a first through hole 31 corresponding to the first pole hole 11, and the first through hole 31 preferably has a square structure; the first fixing member 4 is provided with a first through hole 41 corresponding to the first pole hole 11, and the first through hole 41 is... A circular structure adapted to the first conductive protrusion 21 of the cylindrical structure; the main body of the first pole post structure 2 is at least partially inserted into the first pole post hole 11 and the first through hole 31 so that the conductive protrusion is led out through the first through hole 41, and the portion of the main body of the first pole post structure 2 inserted into the first pole post hole 11 and the first through hole 31 adopts a square structure, the first fixing member 4 covers the first step portion, and the first fixing member 4 and the first step portion are respectively provided with a first protrusion 22 and a first recess 42, the first protrusion 22 being positioned in the first recess 42, and the first fixing member 4 is also connected and fixed to the main body of the first pole post structure 2. The structural shape and mutual adaptability of the first pole post structure 2, as described above, enhance the structural strength of the first pole post structure 2 after installation on the cover plate 1, while also increasing the pole post's torsional resistance.

[0040] Furthermore, the first electrode structure 2 includes a copper electrode 24 and an aluminum electrode 23. The aluminum electrode 23 includes a base, and the first conductive protrusion 21 is formed by extending axially on the base. The first protrusion 22 is disposed on the outer periphery of the base, and the first recess 42 is disposed on the first fixing member 4. The base or each of the first protrusions 22 is fixed to the copper electrode 24 by laser welding or ultrasonic welding. Its structure makes the first electrode structure 2 a copper-aluminum electrode 23 structure. The welding fixation between the copper electrode 24 and the aluminum electrode 23 makes the connection firm and reliable, and improves the structural strength.

[0041] Preferably, to ensure more reliable positioning between the first fixing member 4 and the first pole post structure 2, a second protrusion 44 and a second recess 25 are respectively provided on the first fixing member 4 and the first step. The second protrusion 44 is positioned within the second recess 25. Specifically, the number of the first protrusion 22 and the first recess 42 are both set to be multiple and spaced apart on a horizontal reference, so that a second recess 25 is formed between each two adjacent first protrusions 22 on the aluminum pole post 23, and a second protrusion 44 is formed between each two adjacent first recesses 42 on the first fixing member 4. The first fixing member 4 is a metal plate, and the first recess 42 and the second protrusion 44 are both formed by stamping. Preferably, the number of the first recess 42 and the second protrusion 44 is four. The aluminum pole post 23 is formed by stamping, that is, four first protrusions 22 and four second recesses 25 are preferably formed during stamping.

[0042] Furthermore, at least one first connecting post 243 is formed on the copper pole post 24. The first connecting post 243 is riveted to the first riveting hole 43 of the first fixing member 4. Generally, the number of first connecting posts 243 corresponds to the number of second recesses 25. Therefore, four first connecting posts 243 are used. Thus, when riveting, the first connecting post 243 passes through the second recess 25 and is then riveted to the first riveting hole 43 of the first fixing member 4. This structure makes the first fixing member 4 more securely and reliably fixed on the main body of the first pole post structure 2, thereby improving the structural strength.

[0043] Preferably, the copper electrode post 24 includes a connector 241 and a first plate 242 disposed on the outer peripheral wall of the connector 241 and arranged in annular intervals or continuously. The connector 241 has a square structure and passes through the first electrode post hole 11 and the first through hole 31. At least a portion of the connector 241 is placed in the first electrode post hole 11. The base or each of the first protrusions 22 is fixed to the connector 241 by laser welding or ultrasonic welding so that the aluminum electrode post 23 and the connector 241 form the main body. A first sealing ring 5 is sleeved on the connector 241. The first sealing ring 5 is clamped between the first plate 242 and the back of the top cover. The first sealing ring 5 is preferably made of rubber or silicone. Generally, in order to make the welding more secure, the base is preferably fixed to the connector 241 by laser welding or ultrasonic welding.

[0044] In this embodiment, the cover plate 1 is provided with a second pole hole 12, which is located at the other end of the cover plate 1 along its length, and the second pole hole 12 preferably has a square structure; the main body of the second pole structure 6 forms a second conductive boss 61 and a second step portion surrounding the second conductive boss 61, the second conductive boss 61 preferably has a cylindrical structure, and the main body of the second pole structure 6 has a square structure; the second upper insulating member 7 is provided on the front of the cover plate 1 at the position of the second pole hole 12, and the second upper insulating member 7 is provided with a second through hole 71 corresponding to the second pole hole 12, the second through hole 71 preferably has a square structure; the second fixing member 8 is provided with a second through hole 81 corresponding to the second pole hole 12, the second through hole 81 adopts the shape of the cylindrical second conductive boss 6 1. Adaptive circular structure; the main body of the second pole post structure 6 is at least partially inserted into the second pole post hole 12 and the second through hole 71 so that the two conductive protrusions are led out through the second through hole 81, and the second fixing member 8 covers the stepped portion, and at least one second connecting post 63 is formed on the main body of the second pole post structure 6, the second connecting post 63 is riveted to the second riveting hole 82 of the second fixing member 8; the main body of the second pole post structure 6 is fitted with a second sealing ring 9, the second sealing ring 9 is clamped between the second plate 62 of the second pole post structure 6 and the back of the top cover; wherein, the structural shape of the second pole post structure 6 set in the above manner and the mutual adaptability installation make the structural strength of the second pole post structure 6 after installation on the cover plate 1, and at the same time enhance the torsional resistance of the pole post.

[0045] Furthermore, both the area with the first upper insulating member 3 and the area with the second upper insulating member 7 on the front of the top cover are provided with annular retaining rings 13. The inner wall of each retaining ring 13 is respectively attached to the outer peripheral wall of the first upper insulating member 3 and the outer peripheral wall of the second upper insulating member 7. The outer peripheral wall of the first upper insulating member 3 and the edge of the second upper insulating member 7 are provided with annular positioning portions 32 continuously arranged along them. The annular positioning portions 32 are provided with annular positioning grooves 33 continuously arranged. Each retaining ring 13 is respectively positioned in the annular positioning groove 33. The inner wall of each annular positioning wall is respectively attached to the outer peripheral wall of the first fixing member 4 and the outer peripheral wall of the second fixing member 8. The structure of the retaining rings 13 makes the first upper insulating member 3 and the second upper insulating member 7 on the front of the top cover reliably positioned. However, the first upper insulating member 3 and the second upper insulating member 7 are preferably made of plastic material.

[0046] Preferably, the retaining ring 13, the annular positioning part 32, the first upper insulating part 3, and the first fixing part 4 at the position of the first conductive protrusion 21 are all square structures. This structure restricts the rotation of the first fixing part 4, thereby further enhancing the torsional resistance of the first pole post structure 2 after it is installed on the cover plate 1.

[0047] Preferably, the retaining ring 13, the annular positioning part 32, the second upper insulating part 7, and the second fixing part 8 at the position of the second conductive protrusion 61 are all directional structures. This structure restricts the rotation of the second fixing part 8, thereby further enhancing the torsional resistance of the second pole post structure 6 after it is installed on the cover plate 1.

[0048] In this embodiment, a lower plastic plate 10 is fixed to the back of the cover plate 1. The lower plastic plate 10 is provided with two mounting holes 101 corresponding to the positions of the first pole hole 11 and the second pole hole 12, and an annular groove 102 surrounding each mounting hole 101. The first plate 242 and the second plate 62 are respectively positioned in the corresponding annular groove 102 so as to clamp the edge of the mounting hole 101 through the cooperation between each plate and the cover plate 1. Two connecting pieces 244 are provided on the first plate 242 and the second plate 62. The connecting pieces 244 and the corresponding plates can be welded or the two can be combined into an integral structure. The structure is designed to insulate the back of the cover plate 1.

[0049] Preferably, the back of the cover plate 1 is provided with a plurality of welding grooves, and the lower plastic plate 10 is provided with a plurality of welding protrusions. Each welding protrusion is welded and fixed to each welding groove to fix the lower plastic plate 10 on the cover plate 1.

[0050] Example 2: like Figures 12-21 As shown, the battery top cover assembly described in this embodiment has a structure similar to that of Embodiment 1, but the difference is that each of the second recesses 25 is provided with a connecting part 231. The two sides of the connecting part 231 are respectively connected to the adjacent first protrusions 22. A first connecting post 243 is formed on the copper pole post 24. A connecting hole 232 corresponding to the first connecting post 243 is formed on the connecting part 231. The first connecting post 243 passes through the connecting hole 232 and is riveted to the first riveting hole 43 of the first fixing member 4. Generally, the number of first connecting posts 243 corresponds to the number of second recesses 25, so the number of first connecting posts 243 is four. Therefore, when riveting, the first connecting post 243 passes through the connecting hole 232 and is then riveted to the first riveting hole 43 of the first fixing member 4. This structure makes the first fixing member 4 more securely and reliably fixed on the main body of the first pole post structure 2, thereby improving the structural strength.

[0051] Preferably, the first fixing member 4 is further provided with a groove, and the first upper insulating member 3 is provided with a protrusion corresponding to the position of the groove, the protrusion fitting into the groove. This structural arrangement ensures that the first fixing member 4 is reliably positioned on the first upper insulating member 3.

Claims

1. A battery top cover assembly, characterized in that, include: Cover plate (1), the cover plate (1) is provided with a first pole post hole (11); The first pole post structure (2) has a first conductive boss (21) and a first step portion surrounding the first conductive boss (21) in its main body portion; The first upper insulating member (3) is disposed on the front of the cover plate (1) at the position of the first pole hole (11), and the first upper insulating member (3) is provided with a first through hole (31) corresponding to the first pole hole (11). The first fixing member (4) is provided with a first through hole (41) corresponding to the first pole hole (11). The main body of the first pole post structure (2) is at least partially inserted into the first pole post hole (11) and the first through hole (31) so that the conductive protrusion is led out through the first through hole (41). The first fixing member (4) covers the first step portion, and the first fixing member (4) and the first step portion are respectively provided with a first protrusion (22) and a first recess (42). The first protrusion (22) is positioned in the first recess (42). The first fixing member (4) is also connected to and fixed to the main body of the first pole post structure (2).

2. The battery top cover assembly according to claim 1, characterized in that, The first electrode structure (2) includes a copper electrode (24) and an aluminum electrode (23). The aluminum electrode (23) includes a base. The first conductive protrusion (21) is formed by extending axially on the base. The first protrusion (22) is disposed on the outer periphery of the base. The first recess (42) is disposed on the first fixing member (4). The base or each of the first protrusions (22) is welded to the copper electrode (24) and fixed to each other.

3. A battery top cover assembly according to claim 2, characterized in that, The first fixing member (4) and the first step are respectively provided with a second protrusion (44) and a second recess (25), and the second protrusion (44) is positioned in the second recess (25).

4. A battery top cover assembly according to claim 3, characterized in that, The number of the first protrusion (22) and the first recess (42) are both set to be multiple and are spaced apart on the horizontal reference so that a second recess (25) is formed between each two adjacent first protrusions (22) on the aluminum pole post (23) and a second protrusion (44) is formed between each two adjacent first recesses (42) on the first fastener (4).

5. A battery top cover assembly according to claim 4, characterized in that, The second recess (25) is provided with a connecting part (231). The two sides of the connecting part (231) are respectively connected to the adjacent first protrusion (22). A first connecting post (243) is formed on the copper pole post (24). A connecting hole (232) corresponding to the first connecting post (243) is formed on the connecting part (231). The first connecting post (243) passes through the connecting hole (232) and is riveted to the first riveting hole (43) of the first fixing member (4).

6. A battery top cover assembly according to claim 4, characterized in that, At least one first connecting post (243) is formed on the copper pole post (24), and the first connecting post (243) is riveted to the first riveting hole (43) of the first fixing member (4).

7. A battery top cover assembly according to claim 2, characterized in that, The copper pole (24) includes a connector (241) and a first plate (242) disposed on the outer peripheral wall of the connector (241) and arranged in annular intervals or continuously. At least a portion of the connector (241) is placed in the first pole hole (11). The base or each of the first protrusions (22) is welded and fixed to the connector (241) so that the aluminum pole (23) and the connector (241) form the main body. A first sealing ring (5) is sleeved on the connector (241). The first sealing ring (5) is clamped between the first plate (242) and the back of the top cover.

8. A battery top cover assembly according to claim 1, characterized in that, It also includes a second pole post structure (6), a second upper insulating member (7), and a second fixing member (8). The cover plate (1) is provided with a second pole post hole (12). The main body of the second pole post structure (6) forms a second conductive boss (61) and a second step portion provided around the second conductive boss (61). The second upper insulating member (7) is provided on the front of the cover plate (1) at the position of the second pole post hole (12), and the second upper insulating member (7) is provided with a second through hole (71) corresponding to the second pole post hole (12). The second fixing member (8) is provided with a second through hole (81) corresponding to the second pole post hole (12). The main body of the second pole post structure (6) is at least partially inserted into the second pole post hole (12) and the second through hole (71) so that the two conductive bosses are led out through the second through hole (81), and the second fixing member (8) covers the stepped portion, and at least one second connecting post (63) is formed on the main body of the second pole post structure (6), and the second connecting post (63) is riveted to the second riveting hole (82) of the second fixing member (8); The main body of the second pole post structure (6) is fitted with a second sealing ring (9), which is sandwiched between the second plate (62) of the second pole post structure (6) and the back of the top cover.

9. A battery top cover assembly according to claim 8, characterized in that, The top cover has annular retaining rings (13) in the area with the first upper insulating member (3) and the area with the second upper insulating member (7). The inner wall of each retaining ring (13) is in contact with the outer peripheral wall of the first upper insulating member (3) and the outer peripheral wall of the second upper insulating member (7). The outer peripheral wall of the first upper insulating member (3) and the edge of the second upper insulating member (7) are provided with annular positioning parts (32) continuously arranged along them. The annular positioning parts (32) are provided with annular positioning grooves (33) continuously arranged. Each retaining ring (13) is positioned in the annular positioning groove (33). The inner wall of each annular positioning wall is in contact with the outer peripheral wall of the first fixing member (4) and the outer peripheral wall of the second fixing member (8).

10. A battery top cover assembly according to claim 9, characterized in that, The retaining ring (13), annular positioning part (32), first pole hole (11), first through hole (31), first upper insulating part (3), first fixing part (4), and the main body of the first pole structure (2) at the position of the first conductive boss (21) are all polygonal structures located at the positions of the first pole hole (11) and the first through hole (31), and / or The retaining ring (13), annular positioning part (32), second pole hole (12), second through hole (71), second upper insulating part (7), second fixing part (8), and the parts on the main body of the second pole structure (6) located at the second pole hole (12) and second through hole (71) are all polygonal structures.

Images