CN217507601U - Utmost point post structure, battery top cap and power battery - Google Patents
Utmost point post structure, battery top cap and power battery Download PDFInfo
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- CN217507601U CN217507601U CN202221206961.4U CN202221206961U CN217507601U CN 217507601 U CN217507601 U CN 217507601U CN 202221206961 U CN202221206961 U CN 202221206961U CN 217507601 U CN217507601 U CN 217507601U
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Abstract
The utility model discloses a utmost point post structure, battery top cap and power battery, this utmost point post structure include utmost point post body and utmost point post piece, utmost point post body includes riveting portion, cooperation portion that the size increases in proper order and ends the portion of supporting, be equipped with on the riveting portion and predetermine the riveting taper hole, the cooperation portion is worn to establish in the utmost point post hole of lamina tecti, end the portion of supporting with the lower surface insulation of lamina tecti sets up, utmost point post piece cover is established on the riveting portion and with utmost point post body riveting. After this utmost point post structure's utmost point post body and utmost point post piece riveting are accomplished, the axial deformation of utmost point post body is less, and the upper end radial deformation of utmost point post body is great, and the lower extreme radial deformation is less, and the upper surface of the utmost point post piece after the riveting is comparatively level and smooth the reliability higher.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a utmost point post structure, battery top cap and power battery.
Background
In battery lamina tecti equipment process, need be in the same place utmost point post body and utmost point post piece riveting, but prior art is great in the deformation of the root of riveting completion utmost point post body, and whole utmost point post body all has great deformation in axial and radial two directions, and axial deformation can reduce the riveting intensity with utmost point post piece to because utmost point post body is great in axial direction's deformation, the upper surface of the utmost point post piece after the riveting also has deformation and the plane degree of certain degree relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a first aim at provides a utmost point post structure, this utmost point post structure's utmost point post body and utmost point post piece riveting completion back, the axial deformation of utmost point post body is less, and the upper end radial deformation of utmost point post body is great, and the lower extreme radial deformation is less, and the upper surface of the utmost point post piece after the riveting is comparatively level and smooth the reliability higher.
A second object of the utility model is to provide a battery top cap, this battery top cap's utmost point post structure's reliability is better for battery top cap can be comparatively conveniently with outside lead wire welding.
A third object of the present invention is to provide a power battery, which has a better reliability for the use of the battery top cover.
In order to realize the technical effect, the utility model discloses a technical effect as follows:
the utility model discloses a utmost point post structure, include: the terminal post body comprises a riveting part, a matching part and a resisting part, the riveting part, the matching part and the resisting part are sequentially increased in size, a preset riveting taper hole is formed in the riveting part, the matching part penetrates through a terminal post hole of the top cover plate, and the resisting part and the lower surface of the top cover plate are arranged in an insulating mode; and the pole column block is sleeved on the riveting part and is riveted with the pole column body.
In some embodiments, the predetermined rivet taper is from 90 ° to 150 °.
In some embodiments, the rivet has a minimum wall thickness of 1mm to 1.5 mm.
In some embodiments, the pole block is provided with a riveting hole, the riveting hole is matched with the riveting portion, the riveting hole includes a first hole portion and a second hole portion, the first hole portion is located above the second hole portion, and the diameter of the first hole portion is larger than that of the second hole portion.
In some specific embodiments, the junction of the first hole part and the second hole part is provided with a fillet, and the radius of the fillet is 1mm-1.5 mm.
In some embodiments, an annular protrusion is provided on an end surface of the fitting portion facing the pole piece.
The utility model also discloses a battery top cap, including lamina tecti, first plastic part and as before utmost point post structure.
In some embodiments, a matching sinking groove is formed in the top cover plate, a pole column hole is formed in the bottom wall of the matching sinking groove, the first plastic part is arranged in the matching sinking groove, and a containing sinking groove is formed in the first plastic part; wherein: the bottom wall of the matching sinking groove and the bottom wall of the first plastic part are both provided with a first positioning bulge and/or a first positioning groove, the first positioning bulge on the bottom wall of the matching sinking groove can be positioned with the first positioning groove on the bottom wall of the first plastic part, and the first positioning groove on the bottom wall of the matching sinking groove can be matched with the first positioning bulge on the bottom wall of the first plastic part; the bottom wall of holding heavy groove with the diapire of utmost point post piece all is equipped with second location arch and/or second positioning groove, hold on the diapire of heavy groove second location arch can with on the diapire of utmost point post piece the second positioning groove location, hold on the diapire of heavy groove second positioning groove can with on the diapire of utmost point post piece the protruding cooperation of second location.
In some embodiments, the battery top cover further comprises a second plastic part, the second plastic part is attached to one side of the top cover plate, which is away from the first plastic part, third positioning protrusions and/or third positioning grooves are/is arranged in the second plastic part and the top cover plate, the third positioning protrusions on the second plastic part can be positioned with the third positioning grooves on the top cover plate, and the third positioning grooves on the second plastic part can be matched with the third positioning protrusions on the top cover plate.
The utility model also discloses a power battery, including the casing, as before battery top cap and electric core, the one end of casing opens the setting, battery top cap lock is in the end of opening of casing, electric core sets up in the casing, just the utmost point ear of electric core with utmost point post structure electricity is connected.
The utility model discloses utmost point post structure's beneficial effect: because the riveting part is provided with the preset riveting taper hole, in the actual riveting process, the radial change of the riveting part is large, the axial change of the riveting part is relatively small, and the axial direction and the radial direction of the matching part are basically unchanged. Because riveting portion is direct to cooperate with utmost point post piece, riveting stability with utmost point post piece can be promoted by riveting portion's radial deformation great, and riveting portion's axial deformation has less avoided rivet head contact utmost point post piece to make the plane degree of the upper surface of utmost point post piece higher, thereby promoted the reliability of whole utmost point post structure.
The utility model discloses a battery top cap's beneficial effect, owing to have the preceding utmost point post structure, this battery top cap's utmost point post structure's reliability is better for the battery top cap can be comparatively conveniently with outside lead wire welding.
The utility model discloses a power battery's beneficial effect owing to have the aforesaid battery top cap, this power battery's battery top cap's use reliability is better.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic cross-sectional view of a pole body and a pole block of a pole structure according to an embodiment of the present invention when not riveted;
fig. 2 is a schematic cross-sectional view of the post body of the post structure of the embodiment of the present invention after the post block is riveted;
fig. 3 is a schematic structural diagram of a pole body according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a battery top cover according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a battery top cover according to an embodiment of the present invention.
Reference numerals:
1. a top cover plate; 11. matching with a sink groove; 12. a pole hole; 13. a first positioning projection; 14. a third positioning groove; 2. a first plastic part; 21. accommodating the sink; 22. a first positioning groove; 23. a second positioning projection; 3. a pole body; 31. riveting parts; 311. presetting a riveting taper hole; 32. a fitting portion; 321. an annular projection; 33. a stopping part; 4. a pole block; 41. a second positioning groove; 42. riveting holes; 421. a first hole portion; 422. a second hole portion; 5. a second plastic part; 51. and a third positioning projection.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific structure of the pole structure according to the embodiment of the present invention is described below with reference to fig. 1 to 3.
The utility model discloses a post structure, as shown in fig. 1-fig. 2, this post structure includes utmost point post body 3 and utmost point post piece 4, and utmost point post body 3 is equipped with on the riveting portion 31 and presets riveting taper hole 311 including riveting portion 31, cooperation portion 32 that the size increases in proper order and stopping portion 33, and cooperation portion 32 wears to establish in the utmost point post hole 12 of lamina tecti 1, stops to the lower surface insulation setting of portion 33 and lamina tecti 1, and utmost point post piece 4 cover is established on riveting portion 31 and is riveted with utmost point post body 3.
It can be understood that, when the rivet head of the riveting machine is inserted into the preset riveting taper hole 311 and is pressed and riveted downwards, because the preset riveting taper hole 311 is arranged on the riveting portion 31, the downward force of the rivet head can be decomposed into a pressure along the radial direction of the pole body 3 and a pressure along the axial direction of the pole body 3, so that the fitting portion 32 and the abutting portion 33 with larger sizes are arranged below the riveting portion 31, so that in the actual riveting process, the radial deformation of the riveting portion 31 is larger, the axial change of the riveting portion 31 is relatively smaller, and the axial direction and the radial direction of the fitting portion 32 are basically unchanged. Because riveting portion 31 directly cooperates with utmost point post piece 4, riveting portion 31's radial deformation great can promote with utmost point post piece 4 riveting stability, riveting portion 31's axial deformation has less avoided the rivet head to contact utmost point post piece 4 for the plane degree of the upper surface of utmost point post piece 4 is higher, thereby has promoted the reliability of whole utmost point post structure.
In some embodiments, the preset staking taper 311 is between 90 and 150. It can be understood that too much or too little taper affects the riveting result, specifically too little taper causes too much axial deformation of the riveted part 31, and too much taper causes too much radial deformation of the riveted part 31, thereby being unfavorable for riveting. In this embodiment, the taper of the preset riveting taper hole 311 is set to 90 ° to 150 °, so that the axial deformation and the radial deformation of the riveting portion 31 can be controlled to be in a suitable range, thereby improving the riveting firmness. Of course, in other embodiments of the present invention, the taper of the preset riveting taper hole 311 may be selected according to actual needs, and is not limited to 90 ° to 150 ° in this embodiment.
In some embodiments, the minimum wall thickness of the rivet 31 is 1mm to 1.5 mm. It can be understood that the minimum wall thickness of the riveting portion 31 corresponds to the portion of the preset riveting taper hole 311 with the largest diameter, and if the minimum wall thickness of the riveting portion 31 is too small, the phenomenon that the riveting portion 31 is damaged during the riveting process is likely to occur, so that the riveting fails and waste is generated. If the minimum wall thickness of the rivet portion 31 is excessively large, the amount of deformation of the rivet portion 31 in the radial direction is relatively small at the same riveting pressure, thereby reducing the riveting strength. In the present embodiment, the minimum thickness of the riveting portion 31 is controlled within a range of 1mm to 1.5mm, which can not only avoid the damage of the riveting portion 31, but also ensure the deformation of the riveting portion 31 along the radial direction, thereby improving the riveting yield and the riveting firmness. Of course, in other embodiments of the present invention, the minimum wall thickness of the riveting portion 31 can be selected according to actual needs, and is not limited to 1mm to 1.5mm in this embodiment.
In some embodiments, as shown in fig. 1-2, the post block 4 is provided with a riveting hole 42, the riveting hole 42 is matched with the riveting portion 31, the riveting hole 42 includes a first hole portion 421 and a second hole portion 422, the first hole portion 421 is located above the second hole portion 422, and a diameter of the first hole portion 421 is greater than a diameter of the second hole portion 422. It is understood that the rivet 31 is formed as a stepped shaft after riveting, i.e. the upper half has a larger diameter and the lower half has a smaller diameter, and if the riveting hole 42 is formed as a straight hole, the deformation of the rivet 31 during riveting may cause the pole piece 4 to be deformed seriously, thereby causing the uneven upper surface of the pole piece 4. In this embodiment, the riveting hole 42 is also formed as a stepped hole, so that stable riveting between the riveting portion 31 and the post block 4 can be ensured, and the phenomenon of excessive deformation of the post block 4 can be avoided, thereby improving the reliability of the post structure.
In some specific embodiments, the connection portion of the first hole portion 421 and the second hole portion 422 is provided with a rounded corner having a radius of 1mm to 1.5 mm. This reduces the stress concentration phenomenon, and improves the caulking strength between the pole post block 4 and the caulking portion 31. Of course, in other embodiments of the present invention, the size of the fillet at the connection point of the first hole portion 421 and the second hole portion 422 can be adjusted according to actual needs, and is not limited to 1mm to 1.5mm in this embodiment.
In some embodiments, as shown in fig. 3, the end face of the fitting portion 32 facing the pole piece 4 is provided with an annular projection 321. It can be understood that, in the riveting process annular protrusion 321 can be embedded into pole column block 4, thereby improving the connection stability of pole column block 4 and pole column body 3, because annular protrusion 321 can be embedded into pole column block 4, the internal resistance between pole column block 4 and pole column body 3 can also be reduced, so that the internal resistance between pole column block 4 and pole column body 3 cannot be influenced by the environment, thereby improving the electric connection stability of pole column block 4 and pole column body 3.
The specific structure of the battery top cover according to the embodiment of the present invention will be described below with reference to fig. 4 to 5.
The utility model also discloses a battery top cap, as shown in fig. 4, battery top cap includes lamina tecti 1, first plastic part 2 and utmost point post structure as before.
The utility model discloses a battery top cap, owing to have the foretell utmost point post structure, the reliability of this battery top cap's utmost point post structure is better for the battery top cap can be comparatively conveniently with outside lead wire welding.
In some embodiments, as shown in fig. 5, a mating sinking groove 11 is formed on the top cover plate 1, a pole hole 12 is formed on the bottom wall of the mating sinking groove 11, the first plastic part 2 is disposed in the mating sinking groove 11, and a receiving sinking groove 21 is formed on the first plastic part 2; wherein: the bottom wall of the matching sinking groove 11 and the bottom wall of the first plastic part 2 are both provided with a first positioning bulge 13 and/or a first positioning groove 22, the first positioning bulge 13 on the bottom wall of the matching sinking groove 11 can be positioned with the first positioning groove 22 on the bottom wall of the first plastic part 2, and the first positioning groove 22 on the bottom wall of the matching sinking groove 11 can be matched with the first positioning bulge 13 on the bottom wall of the first plastic part 2; the diapire that holds heavy groove 21 and the diapire of utmost point post piece 4 all are equipped with second location arch 23 and/or second positioning groove 41, and the second location arch 23 on the diapire that holds heavy groove 21 can be fixed a position with second positioning groove 41 on the diapire of utmost point post piece 4, and second positioning groove 41 on the diapire that holds heavy groove 21 can cooperate with second location arch 23 on the diapire of utmost point post piece 4.
It should be noted that, in some embodiments, the bottom wall of the mating sinking groove 11 is provided with a first positioning protrusion 13, and the bottom wall of the first plastic part 2 is provided with a first positioning groove 22; in some embodiments, the bottom wall of the mating sinking groove 11 is provided with a first positioning groove 22, and the bottom wall of the first plastic part 2 is provided with a first positioning protrusion 13; in some embodiments, the bottom wall of the mating sinking groove 11 is provided with a first positioning protrusion 13 and a first positioning groove 22, and the bottom wall of the first plastic part 2 is also provided with the first positioning protrusion 13 and the first positioning groove 22; in some embodiments, the bottom wall of the accommodating sinking groove 21 is provided with a second positioning groove 41, and the bottom wall of the pole block 4 is provided with a second positioning protrusion 23; in some embodiments, the bottom wall of the accommodating sinking groove 21 is provided with a second positioning protrusion 23, and the bottom wall of the pole block 4 is provided with a second positioning groove 41; in some embodiments, the bottom wall of the accommodating sinking groove 21 is provided with a second positioning protrusion 23 and a second positioning groove 41, and the bottom wall of the pole block 4 is provided with a second positioning groove 41 and a second positioning protrusion 23. In the embodiment of the present invention, the specific distribution of the first positioning protrusions 13, the first positioning grooves 22, the second positioning protrusions 23, and the second positioning grooves 41 can be selected according to actual needs.
It can be understood that the embodiment of the utility model provides an in, the connection stability of lamina tecti 1 and first plastic part 2 can enough be guaranteed through the protruding 13 of first location and the location of first positioning groove 22 of mutually supporting to lamina tecti 1 and first plastic part 2, can also avoid first plastic part 2 to appear torsional phenomenon. Meanwhile, because the first positioning protrusion 13 and the first positioning groove 22 are directly formed on the top cover plate 1 and the first plastic part 2, the structure of the whole battery top cover is simplified, the manufacturing cost of the battery top cover is reduced, and the connection reliability is improved. First plastic part 2 and utmost point post piece 4 can enough guarantee the connection stability of utmost point post piece 4 and first plastic part 2 through the protruding 23 and the 41 location of second positioning groove of second location of mutually supporting, can also avoid first plastic part 2 and the torsional phenomenon to appear in utmost point post piece 4. Meanwhile, the second positioning protrusion 23 and the second positioning groove 41 are directly formed on the pole block 4 and the first plastic part 2, so that the structure of the whole battery top cover is simplified, the manufacturing cost of the battery top cover is reduced, and the connection reliability is improved.
In some embodiments, as shown in fig. 5, the battery top cover further includes a second plastic part 5, the second plastic part 5 is attached to a side of the top cover plate 1 away from the first plastic part 2, a third positioning protrusion 51 and/or a third positioning groove 14 are disposed in both the second plastic part 5 and the top cover plate 1, the third positioning protrusion 51 on the second plastic part 5 can be positioned with the third positioning groove 14 on the top cover plate 1, and the third positioning groove 14 on the second plastic part 5 can be matched with the third positioning protrusion 51 on the top cover plate 1. It should be noted that, in some embodiments, the second plastic part 5 is provided with a third positioning protrusion 51, and the top cover plate 1 is provided with a third positioning groove 14; in some embodiments, the second plastic part 5 is provided with a third positioning groove 14, and the top cover plate 1 is provided with a third positioning protrusion 51; in some embodiments, the second plastic part 5 is provided with a third positioning protrusion 51 and a third positioning groove 14, and the top cover plate 1 may also be provided with the third positioning protrusion 51 and the third positioning groove 14. It can be understood that the second plastic part 5 can further ensure the insulation of the stopping part 33 and the top cover plate 1, and the second plastic part 5 and the top cover plate 1 are connected through the third positioning protrusion 51 and the third positioning groove 14, so that the connection stability of the second plastic part 5 and the top cover plate 1 is improved, and the phenomenon that the second plastic part 5 is twisted is avoided.
The specific structure of the battery top cap according to one embodiment of the present invention will be described with reference to fig. 1 to 5.
As shown in fig. 4, the battery top cap of the present embodiment includes a top cap plate 1, a first plastic part 2, a terminal structure and a second plastic part 5. As shown in fig. 1-3, the post structure includes a post body 3 and a post block 4, the post body 3 includes a riveting portion 31, a fitting portion 32 and a stopping portion 33, the size of which increases in sequence, the riveting portion 31 is provided with a preset riveting taper hole 311, the fitting portion 32 is inserted into the post hole 12 of the top cover plate 1, and an annular protrusion 321 is provided on an end surface of the fitting portion 32 facing the post block 4. The pole piece 4 is sleeved on the riveting part 31 and riveted with the pole body 3. The pole column block 4 is provided with a riveting hole 42, the riveting hole 42 is matched with the riveting part 31, the riveting hole 42 comprises a first hole part 421 and a second hole part 422, the first hole part 421 is located above the second hole part 422, and the diameter of the first hole part 421 is larger than that of the second hole part 422. Both ends of utmost point post piece 4 all are equipped with second positioning groove 41, and second positioning groove 41 forms the breach at the outward flange of utmost point post piece 4. The second plastic part 5 is attached to one side of the top cover plate 1 departing from the first plastic part 2, and a third positioning protrusion 51 positioned with the third positioning groove 14 is arranged on the second plastic part 5. As shown in fig. 4-5, a mating sinking groove 11 is formed in the upper surface of the top cover plate 1, first positioning protrusions 13 are arranged at two ends of the mating sinking groove 11, the side walls of the first positioning protrusions 13 coincide with the side walls of the mating sinking groove 11, two third positioning grooves 14 are formed in the lower surface of the top cover plate 1, and each of the third positioning grooves 14 and the first positioning protrusions 13 is formed by stamping. The first plastic part 2 is arranged in the matching sinking groove 11, the first plastic part 2 is provided with a containing sinking groove 21, two ends of the bottom wall of the containing sinking groove 21 of the first plastic part 2 are respectively provided with a protruding part protruding towards the top cover plate 1, and the part of the protruding part protruding out of the first plastic part 2 forms a second positioning protrusion 23; the sunken first positioning groove 22 that constitutes that forms on the bottom wall of heavy groove 21 is held to the bulge, and first positioning groove 22 forms the breach and cooperates with first positioning bulge 13 at the outward flange of first plastic part 2, and the lateral wall of second positioning bulge 23 and the lateral wall coincidence that holds heavy groove 21. The pole structure passes through the first plastic part 2, the top cover plate 1 and the second plastic part 5.
The advantages of the battery top cap of the present embodiment are as follows:
firstly, the method comprises the following steps: because the riveting portion 31 is provided with the preset riveting taper hole 311, in an actual riveting process, the radial change of the riveting portion 31 is large, the axial change of the riveting portion 31 is relatively small, and the axial direction and the radial direction of the matching portion 32 are basically unchanged. Because riveting portion 31 directly cooperates with utmost point post piece 4, riveting portion 31's radial deformation great can promote with utmost point post piece 4 riveting stability, riveting portion 31's axial deformation has less avoided the rivet head to contact utmost point post piece 4 to make the plane degree of the upper surface of utmost point post piece 4 higher, thereby promoted the reliability of whole utmost point post structure.
Secondly, the method comprises the following steps: the first plastic part 2 and the top cover plate 1, the first plastic part 2 and the pole block 4, and the second plastic part 5 and the top cover plate 1 are positioned by adopting self-positioning structures formed on the parts, so that the number of parts is reduced, the production efficiency is improved, the product cost is reduced, the product quality is improved (the phenomenon that the ceramic positioning columns fall off in the prior art is avoided), and the anti-torsion effect of the product can be improved;
thirdly, the method comprises the following steps: in annular protrusion 321 on riveting in-process cooperation portion 32 can imbed utmost point post piece 4, promote utmost point post piece 4 and utmost point post body 3's connection stability on the one hand, on the other hand has reduced the internal resistance between utmost point post piece 4 and utmost point post body 3 for the internal resistance between utmost point post piece 4 and utmost point post body 3 can not receive environmental impact, thereby promotes utmost point post piece 4 and utmost point post body 3 electricity connection stability.
The utility model also discloses a power battery, including the casing, like battery top cap and electric core in the foreland, the one end of casing opens the setting, and battery top cap lock is at the open end of casing, and electric core setting is in the casing, and the utmost point ear and the utmost point post structure electricity of electric core are connected.
The utility model discloses power battery, owing to have the foregoing battery top cap, this power battery's battery top cap's use reliability is better.
Reference throughout this specification to "some embodiments," "other embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and it is to be understood that the present invention is not limited to the above embodiments, but may be modified within the scope of the present invention.
Claims (10)
1. A pole structure, comprising:
the terminal post body (3) comprises a riveting part (31), a matching part (32) and a stopping part (33), wherein the sizes of the riveting part (31), the matching part (32) and the stopping part (33) are sequentially increased, a preset riveting taper hole (311) is formed in the riveting part (31), the matching part (32) penetrates through a terminal post hole (12) of the top cover plate (1), and the stopping part (33) and the lower surface of the top cover plate (1) are arranged in an insulating mode;
the pole column block (4) is sleeved on the riveting part (31) and is riveted with the pole column body (3).
2. The pole construction according to claim 1, characterized in that the pre-riveting taper hole (311) has a taper of 90 ° -150 °.
3. A pole construction according to claim 1, characterised in that the minimum wall thickness of the riveted part (31) is 1-1.5 mm.
4. The pole structure according to claim 1, wherein a riveting hole (42) is formed in the pole block (4), the riveting hole (42) is matched with the riveting portion (31), the riveting hole (42) comprises a first hole portion (421) and a second hole portion (422), the first hole portion (421) is located above the second hole portion (422), and the diameter of the first hole portion (421) is larger than that of the second hole portion (422).
5. The pole structure of claim 4, wherein the joint of the first hole portion (421) and the second hole portion (422) is provided with a fillet, and the radius of the fillet is 1mm-1.5 mm.
6. The pole arrangement according to claim 1, characterized in that the end face of the fitting part (32) facing the pole piece (4) is provided with an annular projection (321).
7. A battery top cap, characterized in that it comprises a top cap plate (1), a first plastic part (2) and a pole structure according to any one of claims 1-6.
8. The battery top cover according to claim 7, wherein the top cover plate (1) is provided with a matching sink groove (11), the bottom wall of the matching sink groove (11) is provided with a pole hole (12), the first plastic part (2) is arranged in the matching sink groove (11), and the first plastic part (2) is provided with a containing sink groove (21); wherein: the bottom wall of the matching sinking groove (11) and the bottom wall of the first plastic part (2) are provided with first positioning protrusions (13) and/or first positioning grooves (22), the first positioning protrusions (13) on the bottom wall of the matching sinking groove (11) can be positioned with the first positioning grooves (22) on the bottom wall of the first plastic part (2), and the first positioning grooves (22) on the bottom wall of the matching sinking groove (11) can be matched with the first positioning protrusions (13) on the bottom wall of the first plastic part (2);
the diapire that holds heavy groove (21) with the diapire of utmost point post piece (4) all is equipped with second location arch (23) and/or second positioning groove (41), hold on the diapire of heavy groove (21) second location arch (23) can with on the diapire of utmost point post piece (4) second positioning groove (41) location, hold on the diapire of heavy groove (21) second positioning groove (41) can with on the diapire of utmost point post piece (4) second location arch (23) cooperation.
9. The battery top cap according to claim 8, further comprising a second plastic member (5), wherein the second plastic member (5) is attached to a side of the top cap plate (1) away from the first plastic member (2), a third positioning protrusion (51) and/or a third positioning groove (14) are disposed in each of the second plastic member (5) and the top cap plate (1), the third positioning protrusion (51) on the second plastic member (5) can be positioned with the third positioning groove (14) on the top cap plate (1), and the third positioning groove (14) on the second plastic member (5) can be matched with the third positioning protrusion (51) on the top cap plate (1).
10. A power battery, characterized by comprising a casing, the battery top cover of claim 7 and a battery core, wherein one end of the casing is arranged in an open manner, the battery top cover is buckled at the open end of the casing, the battery core is arranged in the casing, and a tab of the battery core is electrically connected with the pole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221206961.4U CN217507601U (en) | 2022-05-18 | 2022-05-18 | Utmost point post structure, battery top cap and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221206961.4U CN217507601U (en) | 2022-05-18 | 2022-05-18 | Utmost point post structure, battery top cap and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217507601U true CN217507601U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221206961.4U Withdrawn - After Issue CN217507601U (en) | 2022-05-18 | 2022-05-18 | Utmost point post structure, battery top cap and power battery |
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| Country | Link |
|---|---|
| CN (1) | CN217507601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458845A (en) * | 2022-10-13 | 2022-12-09 | 楚能新能源股份有限公司 | Battery top cap subassembly and power battery |
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2022
- 2022-05-18 CN CN202221206961.4U patent/CN217507601U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458845A (en) * | 2022-10-13 | 2022-12-09 | 楚能新能源股份有限公司 | Battery top cap subassembly and power battery |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220927 Effective date of abandoning: 20230423 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220927 Effective date of abandoning: 20230423 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |