CN218548597U - Battery cover plate assembly and cylindrical battery - Google Patents
Battery cover plate assembly and cylindrical battery Download PDFInfo
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- CN218548597U CN218548597U CN202222782654.7U CN202222782654U CN218548597U CN 218548597 U CN218548597 U CN 218548597U CN 202222782654 U CN202222782654 U CN 202222782654U CN 218548597 U CN218548597 U CN 218548597U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a battery cover plate component and a cylindrical battery, wherein the cover plate component comprises a top cover, a pole, a lower plastic piece and a connecting piece; wherein, the lower plastic part is provided with a first mounting hole; the top cover is arranged on one side of the lower plastic part, and a second mounting hole corresponding to the first mounting hole is formed in the top cover; the pole comprises a base and a column body fixedly arranged on one side of the base; the base is positioned on one surface of the lower plastic part far away from the top cover, and the column body penetrates through the first mounting hole and is in sealing connection with the second mounting hole; one surface of the lower plastic part, which is far away from the top cover, is provided with a mounting groove corresponding to the first mounting hole, and the base is arranged in the mounting groove; the one end that the top cap was kept away from to the mounting groove is provided with location portion, and the connection piece level sets up in location portion and is connected with the base. The utility model discloses it is coaxial when can realizing battery cover plate subassembly and casing assembly, conveniently realize top cap and casing assembly welding.
Description
Technical Field
The utility model relates to the technical field of batteries, especially, relate to a battery cover plate subassembly and cylinder battery.
Background
With the rapid development of lithium ion battery technology, the lithium battery has the characteristics of high capacity and high safety, and is widely applied to the fields of automobiles, aerospace, consumer electronics and the like.
A conventional cylindrical battery includes a case, a cap plate assembly, and a winding core. The cover plate assembly comprises a top cover, an electrode post, a current collecting disc, a lower plastic part and a sealing element, and the patent CN217158384U discloses a battery cover plate assembly and a cylindrical battery, wherein in the process of manufacturing the cylindrical battery, the electrode post is riveted on the top cover through the lower plastic part and the sealing element, then a connecting sheet led out from the current collecting disc is welded with the bottom surface of the electrode post on the lower plastic part, so that the cover plate assembly is formed, then the current collecting disc is welded with a flat tab on a winding core, finally the winding core is inserted into a shell, the connecting sheet is bent, the bent connecting sheet is accommodated in the shell, and finally the cover plate is welded with the gap of the shell.
Above-mentioned patent is through the connection piece that the current collecting disc was drawn forth and moulds utmost point post on the piece down and weld, how to fix a position when not disclosing the welding of connection piece and utmost point post, because the connection piece of drawing forth on the current collecting disc is rectangular form, and utmost point post bottom structure is discoid, when connection piece and utmost point post bottom welding, unable accurate assurance connection piece is in utmost point post bottom center with utmost point post welded area, the connection piece takes place the skew with utmost point post welding position easily appears, this can lead to the apron subassembly to accomplish with the welding of book core back, go into the shell when rolling up the core, because connection piece and utmost point post welding position have the skew, apron subassembly and casing disalignment then can appear, thereby lead to top cap and casing entry to produce the dislocation, can't carry out assembly welding.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a battery cover plate subassembly and cylinder battery solves current battery cover plate subassembly in current collector dish and utmost point post lack effective location when the welding, the easy current collector dish that appears and utmost point post welding position skew leads to rolling up the core and going into behind the shell, disalignment when battery cover plate subassembly and casing assembly, can't realize battery top cap and casing assembly welding's problem.
The technical scheme of the utility model is realized like this:
on one hand, the utility model provides a battery cover plate component, which comprises a top cover, a pole, a lower plastic part and a connecting sheet; wherein the content of the first and second substances,
the lower plastic part is provided with a first mounting hole;
the top cover is arranged on one side of the lower plastic part, and a second mounting hole corresponding to the first mounting hole is formed in the top cover;
the pole comprises a base and a cylinder fixedly arranged on one side of the base, and the cylinder penetrates through the first mounting hole and is in sealing connection with the second mounting hole;
one surface of the lower plastic part, which is far away from the top cover, is provided with a mounting groove corresponding to the first mounting hole, and the base is arranged in the mounting groove;
the mounting groove is provided with a positioning part, and the connecting piece is horizontally arranged in the positioning part and connected with the base.
On the basis of the technical scheme, preferably, the inner cavity of the mounting groove is of a non-circular structure, and the base is matched with the mounting groove in shape.
On the basis of the above technical scheme, preferably, the connecting piece includes a first connecting portion and a second connecting portion formed along a center of one side of the first connecting portion in a delayed manner, the first connecting portion is used for being connected with a battery core tab, and the second connecting portion is connected with one surface of the base, which is far away from the column body.
Further, it is preferred, location portion is the annular boss that sets up along the mounting groove terminal surface, the annular boss is square structure, annular boss horizontal direction one end has the breach, the second connecting portion are kept away from the one end level of first connecting portion is located in the annular boss, just the width of second connecting portion with the width looks adaptation of breach.
Further, preferably, the thickness of the base is not less than the depth of the mounting groove.
On the basis of the technical scheme, preferably, at least two protruding parts are arranged on the surface, in contact with the top cover, of the lower plastic part, and a recessed part matched with the protruding parts is arranged on the surface, in contact with the lower plastic part, of the top cover.
Further, preferably, the cover plate assembly further comprises a sealing element sleeved on the column body, the sealing element comprises a first sealing portion and a second sealing portion which are connected with each other, and the first sealing portion is arranged in the second mounting hole and is abutted between the inner wall of the second mounting hole and the column body; an annular groove is formed in the outer side of one end, close to the lower plastic part, of the second mounting hole, and the second sealing portion is contained in the annular groove.
Further, preferably, the cover plate assembly further comprises an upper plastic part, the upper plastic part is sleeved outside the column body and is arranged on one side, away from the lower plastic part, of the top cover, a convex wall inserted between the column body and the first mounting hole is arranged on the upper plastic part, the convex wall extends towards the direction of the first sealing part, and the upper plastic part is abutted against the column body and the top cover respectively.
Furthermore, preferably, the cover plate assembly further comprises a pressing part, the pressing part is fixedly connected to the end of the cylinder and is abutted against the upper plastic part, the pressing part is provided with a limiting groove, and one end, far away from the base, of the cylinder is provided with a limiting part matched with the limiting groove.
On the other hand, the utility model provides a cylindrical battery, including casing, electric core and above-mentioned apron subassembly, electric core set up in the casing, and with the apron subassembly is connected, the apron subassembly set up in casing tip opening part be used for with electric core is sealed in the casing.
The utility model discloses following beneficial effect has for prior art:
(1) The utility model discloses a battery cover plate component, one side of keeping away from the top cap through moulding the piece down sets up the mounting groove, be used for the base and the mounting groove cooperation of utmost point post, make things convenient for utmost point post and top cap to assemble, extend at the terminal surface of mounting groove simultaneously and form location portion, make the connection piece after cooperating with location portion, connection piece and base welded part just are located the mounting groove, realize that connection piece and base welded region are in the base center of utmost point post, guarantee that connection piece and utmost point post have accurate position location, from this, after connection piece and utmost point post welding, fold the connection piece, make the connection piece locate at moulding the piece center after folding, thereby realize that connection piece and utmost point post after folding keep coaxial, and then realize that top cap and connection piece are coaxial, after connection piece and roll core welding income shell, apron component is coaxial with the casing, make things convenient for top cap and casing assembly welding;
(2) By arranging the mounting groove into a non-circular structure, the top cover can be prevented from rotating relative to the lower plastic part after the pole is riveted with the top cover, so that the pole drives the connecting sheet and the winding core to rotate;
(3) The positioning part is an annular boss arranged along the end face of the mounting groove, the annular boss is of a square structure, and a notch is arranged at one end of the annular boss in the horizontal direction, and the width of the notch is consistent with that of the mounting groove, so that the connecting sheet can be conveniently horizontally inserted into the annular boss through the notch, and the precise positioning of the connecting sheet and the pole is realized;
(4) By enabling the thickness of the base to be not smaller than the depth of the mounting groove, after the connecting sheet is inserted into the annular boss, the connecting sheet can be effectively contacted with the base, and the welding quality is improved;
(5) Mould under through setting up between piece and the top cap bellying and the depressed part of mutually supporting, can restrict and mould piece and top cap rotation down to on the basis that cooperation mounting groove inner chamber is non-circular structure, effectively avoid utmost point post to mould the piece rotation for the top cap under and.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a first perspective three-dimensional structure of a cover plate assembly disclosed in the present invention;
fig. 2 is a schematic view of a second perspective three-dimensional structure of the cover plate assembly disclosed in the present invention;
fig. 3 is an exploded view of a first perspective of the disclosed cover plate assembly;
fig. 4 is an exploded view of a second perspective of the disclosed cover plate assembly;
fig. 5 is a plan cross-sectional view of a cover plate assembly of the present disclosure;
fig. 6 is a plan cross-sectional view of a cylindrical battery of the present invention;
reference numerals:
1. a cover plate assembly; 10. a top cover; 20. a pole column; 30. a lower plastic part; 40. a current collecting plate; 201. a base; 202. a cylinder; 301. mounting grooves; 302. a first mounting hole; 101. a second mounting hole; 401. a confluence disc; 402. connecting sheets; 303. an annular boss; 3031. a notch; 304. a boss portion; 102. a recessed portion; 50. a seal member; 501. a first seal portion; 502. a second seal portion; 103. an annular groove; 60. plastic parts are coated; 601. a convex wall; 70. a compression member; 701. a limiting groove; 2021. a limiting part; 2. a housing; 3. and (6) winding cores.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in fig. 1, with reference to fig. 2-5, the present invention provides a battery cover plate assembly, wherein the cover plate assembly 1 includes a top cover 10, a terminal post 20, a lower plastic member 30 and a connecting sheet 40.
The post 20 includes base 201 and the fixed cylinder 202 that sets up in base 201 one side, and base 201 is used for welding with connection piece 40, and cylinder 202 is used for being regarded as the electrode terminal of cylinder battery, and in this embodiment, the material of base 201 and cylinder 202 can be a material, for example aluminium or copper, also can the material be different, for example, cylinder 202 is the copper material, and base 201 is the aluminium material, and cylinder 202 and the compound riveting of base 201 form post 20.
Mould a 30 down, as the part that carries out electrical isolation with connection piece 40 and top cap 10, it is made for insulating material, mould a 30 down and be the disc structure, its diameter and 2 internal diameter looks adaptations of cylindrical battery case, mould a 30 down and have relative first face and the second face that sets up, the center department of first face is provided with mounting groove 301, the center department of second face is provided with the first mounting hole 302 who link up mounting groove 301, first mounting hole 302 with mounting groove 301 is coaxial, for convenience of connection piece 40 and utmost point post 20 weld, cylinder 202 passes first mounting hole 302, base 201 sets up in mounting groove 301.
The top cover 10 is used as a part of the sealing shell 2, the horizontal position of the top cover 10 is on the surface of the lower plastic piece 30 away from the mounting groove 301, the top cover 10 is provided with a second mounting hole 101 corresponding to the first mounting hole 302, when the pole 20 is assembled with the top cover 10, the column 202 sequentially penetrates through the first mounting hole 302 and the second mounting hole 101, the base 201 is matched with the mounting groove 301, and then the column 202 is hermetically connected with the second mounting hole 101.
In order to facilitate the welding of the connecting sheet 40 and the pole 20, the connecting sheet 40 includes a first connecting portion 401 and a second connecting portion 402 formed along a central portion of one side of the first connecting portion 401 in a delayed manner, the second connecting portion 402 is connected with one side of the base 201 away from the cylinder 202, the first connecting portion 401 is welded to a flat tab on the winding core 3, and in this embodiment, the first connecting portion 401 is in a disc shape, so as to facilitate the welding with a cell tab having a cylindrical structure.
Because the second connecting portion 402 that draws out on first connecting portion 401 is rectangular form, when second connecting portion 402 welded with the base 201 of utmost point post 20, unable accurate assurance second connecting portion 402 was in utmost point post 20 base 201 center with utmost point post 20 welded region, second connecting portion 402 took place the skew with utmost point post 20 welding position easily appears, this can lead to apron subassembly 1 and the completion back of rolling up the core 3 welding, after rolling up core 3 income shell, because second connecting portion 402 and utmost point post 20 welding position have the skew, apron subassembly 1 and casing 2 disalignment then can appear, thereby lead to top cap and casing 2 entry to produce the dislocation, can't carry out assembly welding.
Therefore, in the embodiment, the mounting groove 301 is far from the top cover 10 and is provided with the positioning portion, so that after the second connecting portion 402 on the first connecting portion 401 is matched with the positioning portion, the welded portion of the second connecting portion 402 and the base 201 is just located in the mounting groove 301, the welded area of the second connecting portion 402 and the base 201 is located in the center of the base 201 of the pole 20, and it is ensured that the second connecting portion 402 and the pole 20 have accurate position positioning, therefore, after the second connecting portion 402 is welded with the pole 20 and is bent toward the first connecting portion 401, the pole 20 and the first connecting portion 401 can keep coaxial, and further the top cover 10 and the connecting piece 40 are coaxial, after the connecting piece 40 and the winding core 3 are welded into a shell, the cover plate assembly 1 and the shell 2 are coaxial, and the top cover 10 and the shell 2 are convenient to assemble and weld.
For this reason, the present embodiment makes the inner cavity of the mounting groove 301 a non-circular structure, and the base 201 is adapted to the shape of the mounting groove 301. Specifically, the structure of the mounting groove 301 includes, but is not limited to, any one of an oval shape, a square shape, a triangular shape, or a polygonal shape. From this setting, can avoid utmost point post 20 and top cap 10 assembly back, top cap 10 is rotatory for moulding down 30, causes utmost point post 20 to drive connection piece 40 and roll up the core 3 rotation.
In order to achieve accurate welding position positioning of the second connection portion 402 and the pole 20, this embodiment shows a preferred implementation of the positioning portion, specifically, the positioning portion is an annular boss 303 disposed along an end surface of the mounting groove 301, the annular boss 303 is a square structure, one end of the annular boss 303 in the horizontal direction has a notch 3031, the width of the second connection portion 402 is adapted to the width of the notch 3031, and one end of the second connection portion 402, which is far away from the first connection portion 401, is horizontally located in the annular boss 303. From this setting, when carrying out second connecting portion 402 and utmost point post 20 welding, insert the second connecting portion 402 one end of rectangular structure along breach 3031 level in annular boss 303, the one end inner wall that breach 3031 was kept away from to annular boss 303 can carry out the position spacing to second connecting portion 402, the width and the second connecting portion 402 width adaptation of breach 3031 simultaneously, thereby make second connecting portion 402 level insert back in annular boss 303, second connecting portion 402 just is in mounting groove 301 center department, thereby realize second connecting portion 402 and utmost point post 20 position fine positioning.
In some preferred embodiments, the thickness of the base 201 is not less than the depth of the mounting groove 301. With this arrangement, after the second connection portion 402 is inserted into the annular boss 303, the second connection portion 402 can be effectively contacted with the base 201, and the welding quality can be improved.
It is worth noting that: the depth of the mounting groove 301 does not include the depth of the annular boss 303, and in this embodiment, as some preferred embodiments, the base 201 is located in the mounting groove 301, and the bottom surface of the base 201 may be flush with the end surface of the mounting groove 301, so that the second connecting portion 402 may directly contact with the bottom surface of the base 201 after being placed in the annular boss 303; in order to make the contact effect between the base 201 and the second connecting portion 402 better and avoid poor contact, the bottom surface of the base 201 may be higher than the end surface of the mounting groove 301, so that the second connecting portion 402 can be fully contacted with the bottom surface of the base 201 after being placed in the annular boss 303, thereby improving the welding quality.
In order to avoid the rotation of the lower plastic part 30 relative to the top cover 10, the present embodiment provides a protrusion 304 and a recess 102 which are matched with each other between the lower plastic part 30 and the top cover 10, and specifically, as some embodiments, for convenience of processing, at least two protrusions 304 are provided on a surface of the lower plastic part 30 which is in contact with the top cover 10, and a recess 102 which is matched with the protrusions 304 is provided on a surface of the top cover 10 which is in contact with the lower plastic part 30. From this setting, can restrict down and mould piece 30 and top cap 10 rotation each other to on the basis that cooperation mounting groove 301 inner chamber is non-circular structure, effectively avoid utmost point post 20 to mould a 30 rotation for top cap 10 and down.
In order to seal the pole 20 and the top cover 10, the cover plate assembly 1 of the present embodiment further includes a sealing member 50 sleeved on the cylinder 202, the sealing member 50 includes a first sealing portion 501 and a second sealing portion 502 connected to each other, the first sealing portion 501 is disposed in the second mounting hole 101 and abuts against between an inner wall of the second mounting hole 101 and the cylinder 202; through the arrangement of the first seal, the gap between the top cover 10 and the column 202 is sealed. An annular groove 103 is formed on the outer side of one end of the second mounting hole 101 close to the lower plastic piece 30, and the second sealing part 502 is accommodated in the annular groove 103. In this embodiment, the bottom surface of the second sealing portion 502 abuts against the surface of the lower plastic part 30, so that the top cap 10 and the lower plastic part 30 can be sealed, and meanwhile, the second sealing portion 502 forms a multiple sealing structure, so that a better sealing effect is achieved. The first sealing part 501 is vertically connected with the second sealing part 502, so that the longitudinal section of the sealing element 50 is L-shaped, and the L-shaped sealing element 50 is matched with the pole 20 to reduce the risk of leakage. It should be noted that the sealing member 50 in this embodiment is an integrally formed structure to prevent the sealing member 50 from having a joint to reduce the sealing effect.
The cover plate assembly 1 of the present embodiment further includes an upper molding member 60, the upper molding member 60 is sleeved outside the column 202 and is disposed on one side of the top cover 10 away from the lower molding member 30, a convex wall 601 inserted between the column 202 and the first mounting hole 302 is disposed on the upper molding member 60, the convex wall 601 extends toward the first sealing portion 501, and the upper molding member 60 and the column 202 and the top cover 10 are respectively abutted. Through the arrangement of the upper molding part 60, on one hand, the fastening between the cylinder 202 and the top cover 10 is realized, and on the other hand, through the arrangement of the convex wall 601, the gap between the cylinder 202 and the top cover 10 can be further filled, so that the reliability of the connection between the cylinder 202 and the top cover 10 is realized.
In order to fix the column 202 and the top cover 10 in the axial direction, the cover plate assembly 1 of this embodiment further includes a pressing member 70, the pressing member 70 is fixedly connected to an end of the column 202 and abuts against the upper plastic member 60, the pressing member 70 is provided with a limiting groove 701, and one end of the column 202 away from the base 201 is provided with a limiting portion 2021 matched with the limiting groove 701. From this setting, compress tightly a 70 and cooperate through spacing portion 2021 on spacing groove 701 and cylinder 202 top, realize spacing cylinder 202 on the axial direction, compress tightly simultaneously a 70 and extrude last piece 60 of moulding for mould 30 down and extrude cylinder 202, thereby realize that whole utmost point post 20 connects more firmly on top cap 10, make apron subassembly 1 structure compacter simultaneously. Notably, the attachment of the compression member 70 to the post 202 is accomplished using a riveting process.
On the other hand, the utility model also discloses a cylindrical battery, it is shown with reference to figure 6, include casing 2, electric core 3 and apron subassembly 1, electric core 3 set up in casing 2, and with first connecting portion 401 on the apron subassembly 1 is connected, apron subassembly 1 set up in 2 tip opening parts of casing, and through top cap 10 with 2 tip opening parts of casing are connected. Thereby sealing the battery cell 3 in the case 2
In this embodiment, the cylindrical battery includes two sets of apron subassemblies 1, be positive apron subassembly and negative pole apron subassembly respectively, when carrying out the cylindrical battery assembly, at first with the first connecting portion 401 on the positive apron subassembly of equipment completion with roll up the anodal utmost point ear end welding of 3 one ends of core, then will roll up core 3 income shell, then with the first connecting portion 401 on the negative pole apron subassembly and the negative pole ear end welding of rolling up the 3 other ends of core, with the positive apron subassembly, second connecting portion 402 bends respectively and stretches into in casing 2 on the negative pole apron subassembly, assemble back with casing 2 respectively with positive apron subassembly and negative pole apron subassembly, implement the top cap 10 welding at casing 2 both ends.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A battery cover plate component is characterized in that the cover plate component (1) comprises a top cover (10), a pole (20), a lower plastic piece (30) and a connecting piece (40); wherein, the first and the second end of the pipe are connected with each other,
a first mounting hole (302) is formed in the lower plastic part (30);
the top cover (10) is arranged on one side of the lower plastic part (30), and a second mounting hole (101) corresponding to the first mounting hole (302) is formed in the top cover (10);
the pole (20) comprises a base (201) and a column body (202) fixedly arranged on one side of the base (201); the column (202) penetrates through the first mounting hole (302) and is in sealing connection with the second mounting hole (101);
the method is characterized in that: one surface of the lower plastic part (30) far away from the top cover (10) is provided with a mounting groove (301) corresponding to the first mounting hole (302), and the base (201) is arranged in the mounting groove (301);
the mounting groove (301) is provided with a positioning part, and the connecting piece (40) is horizontally arranged in the positioning part and connected with the base (201).
2. The battery cover plate assembly of claim 1, wherein: the inner cavity of the mounting groove (301) is of a non-circular structure, and the base (201) is matched with the mounting groove (301) in shape.
3. The battery cover plate assembly of claim 1, wherein: the connecting piece (40) comprises a first connecting portion (401) and a second connecting portion (402) formed along the center of one side of the first connecting portion (401) in a delayed mode, the first connecting portion (401) is used for being connected with an electric core lug, and the second connecting portion (402) is connected with one surface, far away from the column body (202), of the base (201).
4. The battery cover plate assembly of claim 3, wherein: the positioning portion is an annular boss (303) arranged along the end face of the mounting groove (301), the annular boss (303) is of a square structure, a notch (3031) is formed in one end of the annular boss (303) in the horizontal direction, one end, far away from the first connecting portion (401), of the second connecting portion (402) is horizontally located in the annular boss (303), and the width of the second connecting portion (402) is matched with the width of the notch (3031).
5. The battery cover plate assembly of claim 4, wherein: the thickness of the base (201) is not less than the depth of the mounting groove (301).
6. The battery cover plate assembly of claim 2, wherein: the side, in contact with the top cover (10), of the lower plastic part (30) is provided with at least two protruding parts (304), and the side, in contact with the lower plastic part (30), of the top cover (10) is provided with a concave part (102) matched with the protruding parts (304).
7. The battery cover plate assembly of claim 1, wherein: the cover plate assembly (1) further comprises a sealing element (50) sleeved on the column body (202), the sealing element (50) comprises a first sealing portion (501) and a second sealing portion (502) which are connected with each other, the first sealing portion (501) is arranged in the second mounting hole (101) and abuts against between the inner wall of the second mounting hole (101) and the column body (202); an annular groove (103) is formed in the outer side of one end, close to the lower plastic piece (30), of the second mounting hole (101), and the second sealing portion (502) is contained in the annular groove (103).
8. The battery cover plate assembly of claim 6, wherein: the cover plate assembly (1) further comprises an upper plastic part (60), the upper plastic part (60) is sleeved outside the cylinder (202) and arranged on one side, away from the lower plastic part (30), of the top cover (10), a convex wall (601) inserted between the cylinder (202) and the first mounting hole (302) is arranged on the upper plastic part (60), the convex wall (601) extends towards the direction of the first sealing part (501), and the upper plastic part (60) is tightly abutted to the cylinder (202) and the top cover (10) respectively.
9. The battery cover plate assembly of claim 8, wherein: the cover plate assembly (1) further comprises a pressing piece (70), the pressing piece (70) is fixedly connected to the end portion of the column body (202) and abuts against the upper plastic piece (60), a limiting groove (701) is formed in the pressing piece (70), and a limiting portion (2021) matched with the limiting groove (701) is arranged at one end, away from the base (201), of the column body (202).
10. A cylindrical battery, characterized in that: the battery comprises a shell (2), a battery cell (3) and the cover plate assembly (1) according to any one of claims 1 to 8, wherein the battery cell (3) is arranged in the shell (2) and is connected with the cover plate assembly (1), and the cover plate assembly (1) is arranged at an end opening of the shell (2) and is used for sealing the battery cell (3) in the shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222782654.7U CN218548597U (en) | 2022-10-21 | 2022-10-21 | Battery cover plate assembly and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222782654.7U CN218548597U (en) | 2022-10-21 | 2022-10-21 | Battery cover plate assembly and cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218548597U true CN218548597U (en) | 2023-02-28 |
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ID=85279366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222782654.7U Active CN218548597U (en) | 2022-10-21 | 2022-10-21 | Battery cover plate assembly and cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218548597U (en) |
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2022
- 2022-10-21 CN CN202222782654.7U patent/CN218548597U/en active Active
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