Top cover assembly and battery

Abstract

The embodiment of the utility model discloses a top cover assembly and a battery, and relates to the field of new energy power batteries. Comprising a top cover piece, a pole and a connecting piece, the pole comprises a first pole body and a second pole body connected with one end of the first pole body, the top cover piece is provided with a through hole, the first pole body is installed in the through hole, the second pole body is arranged on the outer side of the top cover piece, and the end, away from the second pole body, of the first pole body is electrically connected with the connecting piece. Compared with the prior art of fixing the pole post after riveting and welding of the pole post and the pole block, parts of the pole block are reduced, meanwhile, the process can be simplified, deformation is avoided, and therefore welding with external electric equipment can be better achieved.

Description

Technical Field

[0001] This utility model relates to the field of new energy power batteries, and in particular to a top cover assembly and battery. Background Technology

[0002] The existing riveted structure requires a riveting and welding process to connect the pole and the pole block together. The process is complicated and cumbersome. When the pole block exceeds a certain size range (the pole block cannot be made too large, which would restrict the current flow), welding is required after the pole is riveted. After welding, the pole block will deform. Because the deformation of the outer surface of the pole block is severe, it will affect the welding of external electrical equipment or busbar welding. Utility Model Content

[0003] Therefore, it is necessary to provide a top cover assembly and battery to solve the problem that the existing riveted structure top cover requires riveting and welding processes to connect the poles and the electrode blocks together. The process is complicated and cumbersome. When the electrode blocks exceed a certain size range (the electrode blocks cannot be made too large, which leads to overcurrent limitation), welding is required after the poles are riveted. After welding, the electrode blocks will deform. Because the deformation of the outer surface of the electrode blocks is severe, it affects the welding of external electrical equipment or busbar welding.

[0004] In a first aspect, the present invention provides a top cover assembly, including a top cover sheet, an electrode post, and a connecting piece. The electrode post includes a first post and a second post connected to one end of the first post. The top cover sheet has a through hole, the first post is installed in the through hole, the second post is placed on the outside of the top cover sheet, and the end of the first post away from the second post is electrically connected to the connecting piece.

[0005] In one embodiment, the connecting piece has a groove on the side near the first column, and the first column is at least partially placed in the groove and connected to the connecting piece.

[0006] In one embodiment, one end of the first column has a first arcuate surface, and the connecting piece has a second arcuate surface that surrounds and forms the groove, wherein the first arcuate surface and the second arcuate surface cooperate with each other.

[0007] In one embodiment, the connecting piece has a connecting hole, the end of the first column is provided with a protrusion, the connecting hole includes a first hole and a second hole communicating with the first hole, the side wall of the first column is placed in the first hole and abuts against the connecting piece, and the protrusion is placed in the second hole and connected to the connecting piece.

[0008] In one embodiment, the connecting hole further includes a third hole communicating with the second hole, the third hole being used for applying adhesive to the sidewalls of the protrusion and the second hole.

[0009] In one embodiment, the connecting piece has a mounting hole, one end of the first column is placed in the mounting hole, and one end of the first column is provided with a piece, which is riveted at the riveting position and connected to the connecting piece.

[0010] In one embodiment, the top cover assembly further includes a plastic component, the first column is provided with a fixing groove, the inner side of the top cover sheet is provided with a first step, the plastic component is provided with a second step at the end away from the connecting piece, one end of the plastic component is installed in the fixing groove, the first step abuts against the plastic component, and the second step abuts against the top cover sheet.

[0011] In one embodiment, a plastic component is provided on the outer circumferential side of the first column, a first step is provided on the inner side of the top cover plate, and a second step is provided on the plastic component at the end away from the connecting piece. The first step abuts against the plastic component, and the second step abuts against the top cover plate.

[0012] In one embodiment, the top cover assembly further includes plastic, the outer side of the top cover sheet has a recess, the plastic includes a first adhesive and a second adhesive connected to the first adhesive, the first adhesive and the second adhesive are arranged at an angle, the first adhesive is installed in the recess and surrounds the side of the second column near the top cover sheet, and the second adhesive surrounds the side wall of the second column.

[0013] The settling tank is provided with a first positioning structure, and the first colloid is provided with a second positioning structure. The first positioning structure and the second positioning structure cooperate to position the first colloid.

[0014] The top cover assembly also includes a seal, which is sandwiched between the top cover plate and the pole post;

[0015] The top cover assembly also includes a lower plastic piece sandwiched between the top cover sheet and the connecting sheet.

[0016] Secondly, the present invention also provides a battery, the battery comprising a casing, a battery cell and a top cover assembly of any of the above embodiments, the casing and the top cover assembly enclosing a closed space, and the battery cell being fixed within the closed space.

[0017] Implementing the embodiments of this utility model will have the following beneficial effects:

[0018] The top cover assembly and battery of this utility model have a first column installed in a through hole and a second column placed on the outside of the top cover sheet. The end of the first column away from the second column is connected to a connecting piece. By setting the connecting piece, the connecting piece is fixed after being connected to the pole. Compared with the existing technology of riveting and welding the pole and the pole block, this invention fixes the pole, reduces the number of pole block parts, simplifies the process, and prevents deformation, thus allowing for better welding to external electrical equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] in:

[0021] Figure 1 This is an isometric schematic diagram of the top cover assembly in one embodiment.

[0022] Figure 2 for Figure 1 Side view of the top cover assembly shown.

[0023] Figure 3 for Figure 2 The cross-sectional view of AA in the top cover assembly shown.

[0024] Figure 4 for Figure 3 A partially enlarged schematic diagram of part B in the top cover assembly shown.

[0025] Figure 5 For another embodiment, the top cover assembly corresponds to Figure 3 A magnified view of part B in the middle.

[0026] Figure 6 For another embodiment, the top cover assembly corresponds to Figure 3 A magnified view of part B in the middle.

[0027] Figure label:

[0028] 1. Top cover plate; 11. Through hole; 12. First step; 13. Settlement groove;

[0029] 2. Pole post; 21. First column; 211. First arc-shaped surface; 212. Protrusion; 213. Fixing groove; 214. Plate; 22. Second column;

[0030] 3. Connecting piece; 31. Groove; 32. Second arc-shaped surface; 33. Connecting hole; 331. First hole; 332. Second hole; 333. Third hole; 34. Mounting hole;

[0031] 4. Plastic parts; 41. Second step;

[0032] 5. Plastic; 51. First colloid; 52. Second colloid;

[0033] 6. Sealing components; 7. Lower plastic; 100. Riveting positions. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0038] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0039] Please combine them together Figures 1 to 6 The top cover assembly provided by this utility model will now be described. The top cover assembly is used in a battery.

[0040] The top cover assembly includes a top cover plate 1, an electrode post 2, and a connecting piece 3. The electrode post 2 includes a first post 21 and a second post 22 connected to one end of the first post 21. The top cover plate 1 has a through hole 11. The first post 21 is installed in the through hole 11, and the second post 22 is placed outside the top cover plate 1. The end of the first post 21 away from the second post 22 is connected to the connecting piece 3. Specifically, the end of the first post 21 away from the second post 22 is welded to the connecting piece 3 to fix the electrode post 2.

[0041] It is understandable that the first column 21 of the top cover assembly is installed in the through hole 11, and the second column 22 is placed on the outside of the top cover piece 1. The end of the first column 21 away from the second column 22 is connected to the connecting piece 3. By setting the connecting piece 3, the connecting piece 3 is fixed after being connected to the pole 2. Compared with the existing technology of riveting and welding the pole 2 and the pole block, the fixing of the pole 2 reduces the pole block parts, simplifies the process, and does not cause deformation, thus better welding with external electrical equipment.

[0042] In this embodiment, the connecting piece 3 has a groove 31 on the side near the first column 21 that matches the first column 21. The first column 21 is at least partially placed in the groove 31 and connected to the connecting piece 3. Because the groove 31 is provided at the connection position between the connecting piece 3 and the first column 21, the thickness of the connecting piece 3 is reduced, which facilitates the welding of the connecting piece 3 and the first column 21, reduces the welding difficulty, and improves the yield.

[0043] Furthermore, one end of the first column 21 has a first arc-shaped surface 211, and the connecting piece 3 has a second arc-shaped surface 32 that surrounds and forms a groove 31. The first arc-shaped surface 211 and the second arc-shaped surface 32 cooperate with each other. The cooperation between the first arc-shaped surface 211 and the second arc-shaped surface 32 allows for better guidance and positioning when the first column 21 and the connecting piece 3 are welded.

[0044] In one embodiment, such as Figure 1 and Figure 5 As shown, the connecting piece 3 has a connecting hole 33, and the end of the first column 21 is provided with a protrusion 212. The connecting hole 33 includes a first hole 331 and a second hole 332 communicating with the first hole 331. The side wall of the first column 21 is placed in the first hole 331 and abuts against the connecting piece 3, and the protrusion 212 is placed in the second hole 332 and connected to the connecting piece 3. Specifically, when assembling the first column 21 with the connecting hole 33, after the side wall of the first column 21 is placed in the first hole 331 and abuts against the connecting piece 3, the protrusion is placed in the second hole 332 and welded to the connecting piece 3 to achieve the effect of fixing the connecting piece 3 and the pole 2.

[0045] In this embodiment, the connecting hole 33 further includes a third hole 333 communicating with the second hole 332. The third hole 333 is used for applying adhesive to the sidewalls of the protrusion 212 and the second hole 332. This way, after the connecting piece 3 is welded to the protrusion, if weld slag or other debris appears, adhesive can be applied to the sidewalls of the protrusion 212 and the second hole 332 in the third hole 333, preventing weld slag from falling into the battery cell.

[0046] In one embodiment, such as Figure 1 and Figure 6 As shown, the connecting piece 3 has a mounting hole 34. One end of the first column 21 is placed in the mounting hole 34, and a piece 214 is provided at one end of the first column 21. The piece 214 is riveted at the riveting position 100 and connected to the connecting piece 3. Specifically, after one end of the first column 21 is placed in the mounting hole 34, the piece 214 is riveted at the riveting position 100, and then the piece 214 is welded to the connecting piece 3 to fix the pole post 2. In this way, even during the riveting process, the connecting piece 3 will not deform due to excessive riveting force, nor will it affect the welding of the connecting piece 3 to the battery cell tab.

[0047] In one embodiment, such as Figures 1 to 5 As shown, the top cover assembly also includes a plastic component 4. The first column 21 has a fixing groove 213, and the inner side of the top cover plate 1 has a first step 12. The plastic component 4 has a second step 41 at the end away from the connecting piece 3. One end of the plastic component 4 is installed in the fixing groove 213. The first step 12 abuts against the plastic component 4, and the second step 41 abuts against the top cover plate 1. Specifically, one end of the plastic component 4 is installed in the fixing groove 213, the plastic component 4 abuts against the first step 12, and the second step 41 abuts against the top cover plate 1, thereby fixing the auxiliary pole post 2.

[0048] In this embodiment, since the first column 21 is provided with a fixing groove 213, the first column 21 can achieve overcurrent protection, thereby causing the first column 21 to melt at the position of the fixing groove 213 to cut off the power and improve safety.

[0049] In one embodiment, such as Figure 1 and Figure 6 As shown, a plastic part 4 is provided on the outer circumferential side of the first column 21, and a first step 12 is provided on the inner side of the top cover plate 1. A second step 41 is provided on the end of the plastic part 4 away from the connecting plate 3. The first step 12 abuts against the plastic part 4, and the second step 41 abuts against the top cover plate 1. After the first column 21 passes through the plastic part 4, the first pole post 2 is then assembled onto the connecting plate 3, and then riveted and welded.

[0050] In one embodiment, such as Figure 1As shown, the top cover assembly also includes plastic 5. The outer side of the top cover sheet 1 has a recess 13. Plastic 5 includes a first adhesive 51 and a second adhesive 52 connected to the first adhesive 51. The first adhesive 51 and the second adhesive 52 are arranged at an angle. The first adhesive 51 is installed in the recess 13 and surrounds the side of the second pillar 22 near the top cover sheet 1. The second adhesive 52 surrounds the sidewall of the second pillar 22. This allows plastic 5 to improve the sealing performance of the second pillar 22.

[0051] Specifically, the first colloid 51 and the second colloid 52 are set at a 90-degree angle. The settling tank 13 can install and position the first colloid 51.

[0052] In this embodiment, a first positioning structure is provided in the sink 13, and a second positioning structure is provided in the first colloid 51. The first positioning structure and the second positioning structure cooperate to position the first colloid 51. In this way, the installation of the plastic 5 can be prevented from going wrong.

[0053] Furthermore, the top cover assembly also includes a seal 6, which is sandwiched between the top cover plate 1 and the pole post 2. After the pole post 2 is welded to the connecting piece 3, the seal 6 can achieve the compression amount required to meet the sealing requirements.

[0054] Furthermore, the top cover assembly also includes a lower plastic piece 7, which is sandwiched between the top cover piece 1 and the connecting piece 3. The lower plastic piece 7 can be heat-fused to the top cover piece 1 for a fixed connection, or the connecting piece 3 can bear the load and abut against the lower plastic piece 7 after the pole post 2 is welded to the connecting piece 3.

[0055] The present invention also provides a battery, which includes a casing, a battery cell, and a top cover assembly of any of the above embodiments. The casing and the top cover assembly enclose a closed space, and the battery cell is fixed in the closed space.

[0056] It is understood that the battery of this utility model uses the above-mentioned top cover assembly, in which the first column 21 of the top cover assembly is installed in the through hole 11, and the second column 22 is placed on the outside of the top cover piece 1. The end of the first column 21 away from the second column 22 is connected to the connecting piece 3. By setting the connecting piece 3, the connecting piece 3 is fixed after being connected to the pole 2. Compared with the existing technology of riveting and welding the pole 2 and the pole block, the fixing of the pole 2 reduces the pole block parts, simplifies the process, and does not cause deformation, thus better welding to external electrical equipment.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A top cover assembly, characterized in that, The device includes a top cover, an electrode post, and a connecting piece. The electrode post includes a first post and a second post connected to one end of the first post. The top cover has a through hole, the first post is installed in the through hole, and the second post is placed outside the top cover. The end of the first post away from the second post is electrically connected to the connecting piece.

2. The top cover assembly according to claim 1, characterized in that, The connecting piece has a groove on the side near the first column, and the first column is at least partially placed in the groove and connected to the connecting piece.

3. The top cover assembly according to claim 2, characterized in that, One end of the first column has a first arc-shaped surface, and the connecting piece has a second arc-shaped surface that surrounds and forms the groove, with the first arc-shaped surface and the second arc-shaped surface cooperating with each other.

4. The top cover assembly according to claim 1, characterized in that, The connecting piece has a connecting hole, and the end of the first column is provided with a protrusion. The connecting hole includes a first hole and a second hole that communicates with the first hole. The side wall of the first column is placed in the first hole and abuts against the connecting piece. The protrusion is placed in the second hole and is connected to the connecting piece.

5. The top cover assembly according to claim 4, characterized in that, The connecting hole also includes a third hole that communicates with the second hole, the third hole being used for applying adhesive to the sidewalls of the protrusion and the second hole.

6. The top cover assembly according to claim 1, characterized in that, The connecting piece has a mounting hole, one end of the first column is placed in the mounting hole, and one end of the first column is provided with a piece, which is riveted at the riveting position and connected to the connecting piece.

7. The top cover assembly according to claim 1, characterized in that, The top cover assembly also includes a plastic component. The first column is provided with a fixing groove. The inner side of the top cover sheet is provided with a first step. The plastic component is provided with a second step at the end away from the connecting piece. One end of the plastic component is installed in the fixing groove. The first step abuts against the plastic component, and the second step abuts against the top cover sheet.

8. The top cover assembly according to claim 1, characterized in that, A plastic part is provided on the outer circumference of the first column, a first step is provided on the inner side of the top cover plate, and a second step is provided on the plastic part at the end away from the connecting piece. The first step abuts against the plastic part, and the second step abuts against the top cover plate.

9. The top cover assembly according to claim 1, characterized in that, The top cover assembly also includes plastic, and the outer side of the top cover sheet has a recessed groove. The plastic includes a first adhesive and a second adhesive connected to the first adhesive. The first adhesive and the second adhesive are arranged at an angle. The first adhesive is installed in the recessed groove and surrounds the side of the second column near the top cover sheet. The second adhesive surrounds the side wall of the second column. The settling tank is provided with a first positioning structure, and the first colloid is provided with a second positioning structure. The first positioning structure and the second positioning structure cooperate to position the first colloid. The top cover assembly also includes a seal, which is sandwiched between the top cover plate and the pole post; The top cover assembly also includes a lower plastic piece sandwiched between the top cover sheet and the connecting sheet.

10. A battery, characterized in that, The battery includes a casing, a cell, and a top cover assembly as described in any one of claims 1-9, wherein the casing and the top cover assembly enclose a closed space, and the cell is fixed within the closed space.

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