CN215955374U - Top cover assembly and battery - Google Patents
Top cover assembly and battery Download PDFInfo
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- CN215955374U CN215955374U CN202122085820.3U CN202122085820U CN215955374U CN 215955374 U CN215955374 U CN 215955374U CN 202122085820 U CN202122085820 U CN 202122085820U CN 215955374 U CN215955374 U CN 215955374U
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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 relates to the technical field of power batteries, in particular to a top cover assembly and a battery, wherein the top cover assembly comprises: the cover plate is provided with a positive pole mounting hole and a negative pole mounting hole, and pole supporting parts are respectively arranged in the positive pole mounting hole and the negative pole mounting hole; the positive pole column and the negative pole column comprise pole column bodies and annular bosses arranged on the pole column bodies, and the annular bosses of the positive pole column and the negative pole column are respectively supported on the pole column supporting parts of the positive pole column mounting hole and the negative pole column mounting hole; the sealing element is arranged between the annular boss and the pole supporting part; the connecting pieces are arranged on the cover plate and are suitable for forming pressing parts through curling edges, and the pressing parts are pressed above the annular bosses. The top cover assembly has the advantages of less parts and simple structure, can effectively reduce the cost of the top cover assembly, and can reduce the overall height of the pole.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a top cover assembly and a battery.
Background
The lithium battery is a chemical energy storage battery with high energy, high and low temperature and strong adaptability, is mainly characterized by high energy density, high working voltage, low self-discharge rate and no memory effect, is widely applied to the fields of notebooks, electric tools, electric automobiles and the like, and provides stable and safe power output for the batteries.
The good and bad sealing performance of the lithium battery is one of important factors which restrict and influence the performance and the service life of the battery, if the sealing performance is not enough, the electrolyte and the gas in the lithium battery can leak, so that the electrolyte is dried, the lithium battery is invalid, and the environment is polluted. The sealing performance of the pole sealing installation of the lithium battery to the whole battery is very important, the lithium battery generally comprises a shell, a top cover and a battery cell module, and the pole sealing installation is carried out in the top cover.
The top cap subassembly includes apron, explosion-proof piece, plastic pad on the positive pole, plastic pad on the negative pole, plastic board, positive post, negative pole post, anodal riveting piece, negative pole riveting piece, anodal switching piece, negative pole switching piece under the anodal. The cover plate is provided with a positive pole mounting hole, a negative pole mounting hole and an explosion-proof sheet mounting hole positioned between the positive pole mounting hole and the negative pole mounting hole; the explosion-proof sheet is arranged on the explosion-proof sheet mounting hole; the positive pole upper plastic pad and the negative pole upper plastic pad are arranged on the upper surface of the cover plate and are provided with first through holes aligned with the positive pole mounting holes and the negative pole mounting holes; the positive lower plastic plate and the negative lower plastic plate are attached to the lower surface of the cover plate and are provided with second through holes aligned with the positive post mounting holes and the negative post mounting holes and pressure relief channels aligned with the explosion-proof piece mounting holes; the positive pole and the negative pole are sleeved with sealing rings, sequentially pass through the second through hole, the positive pole mounting hole, the negative pole mounting hole and the first through hole and are assembled with the positive pole upper plastic pad, the negative pole upper plastic pad, the positive pole lower plastic plate and the negative pole lower plastic plate through riveting, and the positive pole and the negative pole are higher than the upper surface of the cover plate by a preset height; the positive pole riveting block and the negative pole riveting block are riveted with the upper ends of the positive pole column and the negative pole column; the positive pole switching piece and the negative pole switching piece are fixedly connected to the lower ends of the positive pole column and the negative pole column.
Above-mentioned prior art, the spare part quantity of top cap subassembly is more, and the structure is complicated, and weight is great, and because utmost point post will pass second through-hole, utmost point post mounting hole on the plastic board down, go up the first through-hole on the plastic pad, lead to the height of utmost point post higher, and then lead to the cost higher.
SUMMERY OF THE UTILITY MODEL
Therefore, the present invention is to overcome the defects of the prior art that the number of components of the top cover assembly is large and the structure is complex, so as to provide a top cover assembly and a battery with a small number of components and a simple structure.
In order to solve the above technical problem, the present invention provides a cap assembly, including:
the cover plate is provided with a positive pole mounting hole and a negative pole mounting hole, and pole supporting parts are respectively arranged in the positive pole mounting hole and the negative pole mounting hole;
the positive pole column and the negative pole column comprise pole column bodies and annular bosses arranged on the pole column bodies, and the annular bosses of the positive pole column and the negative pole column are respectively supported on the pole column supporting parts of the positive pole column mounting hole and the negative pole column mounting hole;
the sealing element is arranged between the annular boss and the pole supporting part;
the connecting pieces are arranged on the cover plate, the number of the connecting pieces is two, the connecting pieces are suitable for forming pressing portions through turned edges, and the pressing portions are pressed above the annular bosses in a pressing mode.
Optionally, the cross section of the connector is annular, and the connector surrounds the outer side of the positive pole and/or the negative pole;
or the connecting piece comprises at least two connecting pieces, at least two connecting pieces are distributed at intervals, and at least two connecting pieces surround the outer side of the positive pole and/or the negative pole.
Optionally, the connecting member is integrally formed with the cover plate.
Optionally, the top cover assembly further includes an insulating patch, and the insulating patch includes a first insulating portion covering the pressing portion and a second insulating portion embedded in a gap between the pressing portion and the post body.
Optionally, the insulation patch further comprises a third insulation part surrounding the pressing part.
Optionally, the sealing member is further located between the pole body and the pole support portion.
Optionally, an encapsulating layer is arranged outside the positive pole and the negative pole, the encapsulating layer outside the positive pole is in contact with the hole wall of the positive pole mounting hole, and the encapsulating layer outside the negative pole is in contact with the hole wall of the negative pole mounting hole;
and/or the top cover assembly further comprises a positive lower plastic plate and a negative lower plastic plate which are connected to the lower surface of the cover plate, wherein a first through hole corresponding to the positive post mounting hole is formed in the positive lower plastic plate, a second through hole corresponding to the negative post mounting hole is formed in the negative lower plastic plate, and the positive lower plastic plate and the negative lower plastic plate are respectively arranged on the same side of the cover plate;
and/or, the top cap assembly further comprises an exhaust plate, an explosion-proof valve and a protection patch, wherein a plurality of exhaust holes are formed in the exhaust plate, the explosion-proof valve is connected to the cover plate, and the protection patch is adhered to the cover plate or the explosion-proof valve.
Optionally, the encapsulating layer includes a first annular portion surrounding the outside of the annular boss, a second annular portion covering the upper side of the annular boss, and a third annular portion located below the annular boss, the first annular portion is in contact with the hole walls of the positive pole mounting hole and the negative pole mounting hole, and the pressing portion presses on the second annular portion.
Optionally, the lower side of the third annular portion is provided with an annular protrusion, the pole supporting portion is provided with an annular groove, and the annular protrusion is arranged in the annular groove.
The utility model also provides a battery which comprises the top cover component.
The technical scheme of the utility model has the following advantages:
1. when the top cover assembly is installed, the sealing element is firstly sleeved outside the positive pole and the negative pole, then the positive pole is installed in the positive pole installation hole, the negative pole is installed in the negative pole installation hole, the annular boss on the positive pole is supported on the pole support part in the positive pole installation hole, the annular boss on the negative pole is supported on the pole support part in the negative pole installation hole, the sealing element is positioned between the annular boss and the pole support part, then the edge curling treatment is carried out on the connecting element, the connecting element forms a pressing part, the pressing part is pressed above the annular boss, the annular boss presses the sealing element, the sealing connection between the positive pole and the positive pole installation hole is realized, and the sealing connection between the negative pole and the negative pole installation hole is realized. The top cover assembly has the advantages of less parts and simple structure, and can effectively reduce the cost of the top cover assembly, thereby reducing the cost of the battery cell, and compared with the prior art, the overall height of the pole can be reduced, thereby effectively improving the overall energy density of the battery cell.
2. The top cover component further comprises an insulating patch, wherein the insulating patch comprises a first insulating part covering the upper part of the pressing part and a second insulating part embedded into a gap between the pressing part and the pole body. After the curling is finished, the insulating paster is pasted for insulating the abutting part and the pole terminal, and the insulating effect is achieved.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an exploded view of a cap assembly provided in example 1 of the present invention;
fig. 2 is a top view of a cap assembly provided in example 1 of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is an enlarged view of fig. 3B.
Description of reference numerals:
1. a cover plate; 100. a pole support part; 2. a positive post; 200. a pole body; 201. an annular boss; 202. an aluminum portion; 203. a copper portion; 3. a negative pole post; 4. a seal member; 41. a first seal portion; 42. a second seal portion; 5. a connecting member; 51. a pressing part; 6. an insulating patch; 61. a first insulating portion; 62. a second insulating section; 63. a third insulating section; 7. wrapping an adhesive layer; 71. a first annular portion; 72. a second annular portion; 73. a third annular portion; 74. an annular projection; 8. a plastic plate under the anode; 9. a plastic plate under the negative electrode; 10. an exhaust plate; 11. an exhaust hole; 12. an explosion-proof valve; 13. and (6) a protective patch.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a cap assembly. In one embodiment, as shown in fig. 1 to 4, the top cap assembly includes a cap plate 1, positive and negative posts 2 and 3, a sealing member 4, and a connection member 5.
The cover plate 1 is provided with a positive pole mounting hole and a negative pole mounting hole, and the positive pole mounting hole and the negative pole mounting hole are respectively provided with a pole supporting part 100; the positive pole post 2 and the negative pole post 3 have the same structure and respectively comprise a pole post body 200 and an annular boss 201 arranged on the pole post body 200, and the annular bosses 201 of the positive pole post 2 and the negative pole post 3 are respectively supported on the pole post supporting parts 100 of the positive pole post mounting hole and the negative pole post mounting hole; the sealing element 4 is arranged between the annular boss 201 and the pole support part 100; the connecting piece 5 is arranged on the cover plate 1, the connecting piece 5 is provided with two connecting pieces, one connecting piece 5 is positioned on the outer side of the positive pole column 2, the other connecting piece 5 is positioned on the outer side of the negative pole column 3, the connecting piece 5 is suitable for forming a pressing part 51 through curling, and the pressing part 51 presses above the annular boss 201.
In this embodiment, during installation, the sealing member 4 is firstly sleeved outside the positive post 2 and the negative post 3, then the positive post 2 is installed in the positive post installation hole, the negative post 3 is installed in the negative post installation hole, the annular boss 201 on the positive post 2 is supported on the post supporting portion 100 in the positive post installation hole, the annular boss 201 on the negative post 3 is supported on the post supporting portion 100 in the negative post installation hole, and the sealing member 4 is located between the annular boss 201 and the post supporting portion 100, then the crimping treatment is performed on the connecting member 5, so that the connecting member 5 forms the pressing portion 51, and the pressing portion 51 is pressed above the annular boss 201, thereby the annular boss 201 presses the sealing member 4, the sealing connection between the positive post 2 and the positive post installation hole is realized, and the sealing connection between the negative post 3 and the negative post installation hole is realized. The top cover assembly has the advantages of less parts and simple structure, and can effectively reduce the cost of the top cover assembly, thereby reducing the cost of the battery cell, and compared with the prior art, the overall height of the pole can be reduced, thereby effectively improving the overall energy density of the battery cell.
On the basis of the above embodiment, in a preferred embodiment, the cross section of the connector 5 is circular, and the connector 5 surrounds the outside of the positive electrode post 2 and/or the negative electrode post 3. In the present embodiment, since the cross section of the connecting member 5 is circular, the pressing portion 51 formed by crimping the connecting member 5 is annular and can be uniformly pressed above the annular boss 201, so that the sealing member 4 is pressed tightly, and the sealing effect is ensured.
In an alternative embodiment, each connector 5 comprises at least two tabs, at least two tabs being spaced apart, at least two tabs surrounding the outside of the positive and/or negative posts 2, 3. Specifically, in one embodiment, each connecting member 5 includes two opposite connecting pieces, two connecting pieces of one connecting member 5 are distributed on the peripheral side of the positive post 2, two connecting pieces of the other connecting member 5 are distributed on the peripheral side of the negative post 3, after the positive post 2 is mounted in the positive post mounting hole, the two connecting pieces are respectively curled inwards to form the pressing portions 51, the pressing portions 51 are pressed above the annular boss 201 of the positive post 2, after the negative post 3 is mounted in the negative post mounting hole, the two connecting pieces are respectively curled inwards to form the pressing portions 51, and the pressing portions 51 are pressed above the annular boss 201 of the negative post 3. In another embodiment, each connecting member 5 includes four connecting pieces uniformly distributed along the circumferential direction, wherein four connecting pieces of one connecting member 5 are distributed on the circumferential side of the positive post 2, four connecting pieces of another connecting member 5 are distributed on the circumferential side of the negative post 3, after the positive post 2 is mounted in the positive post mounting hole, the four connecting pieces are respectively curled inwards to form the pressing portions 51, the pressing portions 51 are pressed above the annular boss 201 of the positive post 2, after the negative post 3 is mounted in the negative post mounting hole, the four connecting pieces are respectively curled inwards to form the pressing portions 51, and the pressing portions 51 are pressed above the annular boss 201 of the negative post 3.
In addition to the above embodiments, in a preferred embodiment, the connecting member 5 is integrally formed with the cover plate 1. In the present embodiment, the cover plate 1 is usually made of polished aluminum, and since the connecting member 5 is integrally formed with the cover plate 1, the weight of the top cover assembly can be effectively reduced, and the number of parts of the top cover assembly is further reduced. Of course, in an alternative embodiment, the connecting element 5 is fixed to the cover plate 1 by welding.
On the basis of the above embodiment, in a preferred embodiment, the top cover assembly further includes an insulating patch 6, and the insulating patch 6 includes a first insulating portion 61 covering over the pressing portion 51 and a second insulating portion 62 embedded in the gap between the pressing portion 51 and the pole body 200. In the present embodiment, after the crimping is completed, the insulating sheet 6 is attached to insulate the pressing portion 51 and the post terminal, thereby playing an insulating role.
On the basis of the above embodiment, in a preferred embodiment, the insulation patch 6 further includes a third insulation portion 63 surrounding the pressing portion 51. In this embodiment, the insulating patches 6 are located outside and above the pressing portion 51 and fit into the gap between the pressing portion 51 and the pole body 200, thereby ensuring the insulating effect.
In addition to the above embodiments, in a preferred embodiment, the seal 4 is also located between the pole body 200 and the pole support 100. The area of the sealing member 4 between the annular boss 201 and the post support portion 100 is defined as a first sealing portion 41, and the area between the post body 200 and the post support portion 100 is defined as a second sealing portion, so that the sealing connection between the positive post 2 and the positive post mounting hole and the sealing connection between the negative post 3 and the negative post mounting hole can be further ensured. Specifically, the negative pole column includes copper portion 203 and the aluminium portion 202 that is located the copper portion 203 upside, and second sealing 42 encircles outside copper portion 203, and the positive pole column is whole to be made by aluminium or aluminum alloy, and annular boss 201 is located the middle part of utmost point post body 200, and second sealing 42 encircles outside the lower half of utmost point post body 200 of positive pole column. Of course, in other alternative embodiments, the second sealing portion 42 may not be provided and the seal 4 only comprises the first sealing portion 41.
On the basis of the above embodiment, in a preferred embodiment, the top cover assembly further includes a plastic plate 8 under the positive pole and a plastic plate 9 under the negative pole that are connected to the lower surface of the cover plate 1, a first through hole corresponding to the mounting hole of the positive pole column is arranged on the plastic plate 8 under the positive pole, a second through hole corresponding to the mounting hole of the negative pole column is arranged on the plastic plate 9 under the negative pole, and the plastic plate 8 under the positive pole and the plastic plate 9 under the negative pole are respectively arranged at the same side of the cover plate 1. When the installation, plastic board 8 under the positive pole, plastic board 9 is installed on the lower surface of apron 1 under the negative pole, make under the positive pole first through-hole on the plastic board 8 correspond with the anodal post mounting hole, the second through-hole on the plastic board 9 corresponds with the negative pole post mounting hole under the negative pole, anodal post 2 is installed in the anodal post mounting hole back, plastic board 8 supports under the positive pole and presses 4 downside of sealing member outside 2 anodal post, plastic board 9 supports and presses 4 downside of sealing member outside 3 negative pole posts under the negative pole, ensure sealed effect.
In addition to the above embodiments, in a preferred embodiment, the top cover assembly further includes an exhaust plate 10, an explosion-proof valve 12, and a protection patch 13, wherein a plurality of exhaust holes 11 are formed in the exhaust plate 10, the explosion-proof valve 12 is connected to the cover plate 1, and the protection patch 13 is adhered to the cover plate 1 or the explosion-proof valve 12. Specifically, the exhaust plate 10 is connected with the opposite ends of the plastic plate 8 under the positive pole and the plastic plate 9 under the negative pole, and the protection patch 13 is attached to the explosion-proof valve 12, so that the normal function of the explosion-proof valve 12 can be prevented from being influenced by external water or other impurities. The explosion-proof valve 12 is a normally closed member, i.e. normally closed and not communicated with the outside, when the temperature inside the battery is too high, the air pressure inside the battery will rise, and when the temperature rises to the preset pressure value of the explosion-proof valve 12, the explosion-proof valve 12 will open, so that the inside of the battery is communicated with the outside to reduce the air pressure inside the battery.
In addition to the above embodiments, in a preferred embodiment, the outer surface of the positive post 2 and the outer surface of the negative post 3 are provided with the encapsulating layers 7, the encapsulating layer 7 outside the positive post 2 is in contact with the hole wall of the positive post mounting hole, and the encapsulating layer 7 outside the negative post 3 is in contact with the hole wall of the negative post mounting hole. In this embodiment, the setting of the encapsulating layer 7 can play the insulating role to anodal post 2 and negative pole post 3, can ensure simultaneously that anodal post 2 can be stably connected in the anodal post mounting hole, and negative pole post 3 can be stably connected in the negative pole post mounting hole. When the device is installed, firstly, the positive pole post 2 and the negative pole post 3 are respectively encapsulated to form an encapsulating layer 7, then the sealing element 4 is sleeved outside the positive pole post 2 and the negative pole post 3, the positive pole post 2 is installed in a positive pole post installation hole, the negative pole post 3 is installed in a negative pole post installation hole, the annular boss 201 on the positive pole post 2 is supported on the pole support part 100 in the positive pole post installation hole, the annular boss 201 on the negative pole post 3 is supported on the pole support part 100 in the negative pole post installation hole, the first sealing part 41 of the sealing element 4 is positioned between the annular boss 201 and the support part pole 100, then, the connecting element 5 is crimped, the connecting element 5 forms a pressing part 51, the pressing part 51 is pressed above the annular boss 201, so that the annular boss 201 presses the first sealing part 41, the sealing connection of the positive pole post 2 and the positive pole post installation hole is realized, and the sealing connection of the negative pole post 3 and the negative pole post installation hole are realized, finally, the insulating patch 6 is attached to the pressing portion 51.
The encapsulating layer 7 may be formed of PPS material.
On the basis of the above embodiment, in a preferred embodiment, the encapsulating layer 7 includes the first annular portion 71 surrounding the annular boss 201, the second annular portion 72 covering the annular boss 201, and the third annular portion 73 located below the annular boss 201, the first annular portion 71 is in contact with the hole walls of the positive and negative post mounting holes, and the pressing portion 51 presses against the second annular portion 72. In this embodiment, the pressing portion 51 presses against the encapsulating layer 7, and the pressing portion 51 is in insulating connection with the pole, so that the insulating effect is good.
On the basis of the above embodiments, in a preferred embodiment, the third annular part 73 is provided with an annular protrusion 74 on its lower side, the pole support part 100 is provided with an annular groove, and the annular protrusion 74 is provided in the annular groove. In this embodiment, by disposing the annular protrusion 74 on the encapsulating layer 7 in the annular groove on the post support portion 100, it is further ensured that the positive post 2 is stably connected in the positive post mounting hole and the negative post 3 is stably connected in the negative post mounting hole.
Example 2
The present embodiment provides a battery, including the cap assembly, the battery cell and the casing provided in the foregoing embodiments. The battery core is arranged in the shell, and the cover plate 1 is fixedly connected with the shell.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. A header assembly, comprising:
the cover plate (1) is provided with a positive pole mounting hole and a negative pole mounting hole, and pole supporting parts (100) are respectively arranged in the positive pole mounting hole and the negative pole mounting hole;
the positive pole column (2) and the negative pole column (3) comprise pole column bodies (200) and annular bosses (201) arranged on the pole column bodies, and the annular bosses (201) of the positive pole column (2) and the negative pole column (3) are respectively supported on the pole column supporting parts (100) of the positive pole column mounting hole and the negative pole column mounting hole;
a sealing element (4) arranged between the annular boss (201) and the pole support part (100);
the connecting piece (5) is arranged on the cover plate (1), the number of the connecting pieces (5) is two, the connecting piece (5) is suitable for forming a pressing part (51) through curling, and the pressing part (51) is pressed above the annular boss (201).
2. The cap assembly according to claim 1, characterized in that the connector (5) is circular in cross-section, the connector (5) surrounding the outside of the positive post (2) and/or the negative post (3);
or the connecting piece (5) comprises at least two connecting pieces, at least two connecting pieces are distributed at intervals, and at least two connecting pieces surround the outer side of the positive pole post (2) and/or the negative pole post (3).
3. Cap assembly according to claim 2, wherein the connecting element (5) is integrally formed with the cover plate (1).
4. The cap assembly according to any one of claims 1-3, characterized in that the cap assembly further comprises an insulating patch (6), the insulating patch (6) comprising a first insulating portion (61) covering over the pressing portion (51) and a second insulating portion (62) embedded in the gap between the pressing portion (51) and the pole body.
5. Cap assembly according to claim 4, wherein the insulating patch (6) further comprises a third insulating portion (63) surrounding the pressing portion (51) on the outside.
6. Cap assembly according to any one of claims 1 to 3, characterized in that the seal (4) is also located between the pole body (200) and the pole support (100).
7. The top cap assembly of claim 6, wherein the positive post (2) and the negative post (3) are externally provided with an encapsulating layer (7), the encapsulating layer (7) outside the positive post (2) is in contact with the wall of the positive post mounting hole, and the encapsulating layer (7) outside the negative post (3) is in contact with the wall of the negative post mounting hole;
and/or the top cover assembly further comprises a positive lower plastic plate (8) and a negative lower plastic plate (9) which are connected to the lower surface of the cover plate (1), wherein a first through hole corresponding to the positive post mounting hole is formed in the positive lower plastic plate (8), a second through hole corresponding to the negative post mounting hole is formed in the negative lower plastic plate (9), and the positive lower plastic plate (8) and the negative lower plastic plate (9) are respectively arranged on the same side of the cover plate (1);
and/or, the top cap subassembly still includes air discharge plate (10), explosion-proof valve (12) and protection paster (13), be formed with a plurality of exhaust holes (11) on air discharge plate (10), explosion-proof valve (12) are connected on apron (1), paste protection paster (13) apron (1) or on explosion-proof valve (12).
8. The top cover assembly of claim 7, wherein the encapsulating layer (7) comprises a first annular part (71) surrounding the annular boss (201), a second annular part (72) covering the annular boss (201), and a third annular part (73) located below the annular boss (201), the first annular part (71) is in contact with the hole walls of the positive pole mounting hole and the negative pole mounting hole, and the pressing part (51) presses against the second annular part (72).
9. Cap assembly according to claim 8, characterized in that the third annular portion (73) is provided on its underside with an annular projection (74), and the pole support (100) is provided with an annular groove, in which the annular projection (74) is provided.
10. A battery comprising the cap assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085820.3U CN215955374U (en) | 2021-08-31 | 2021-08-31 | Top cover assembly and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085820.3U CN215955374U (en) | 2021-08-31 | 2021-08-31 | Top cover assembly and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215955374U true CN215955374U (en) | 2022-03-04 |
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ID=80430946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122085820.3U Active CN215955374U (en) | 2021-08-31 | 2021-08-31 | Top cover assembly and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215955374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115632208A (en) * | 2022-11-04 | 2023-01-20 | 厦门海辰储能科技股份有限公司 | Lower plastic of battery, top cap subassembly and battery of battery |
-
2021
- 2021-08-31 CN CN202122085820.3U patent/CN215955374U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115632208A (en) * | 2022-11-04 | 2023-01-20 | 厦门海辰储能科技股份有限公司 | Lower plastic of battery, top cap subassembly and battery of battery |
| CN115632208B (en) * | 2022-11-04 | 2024-01-23 | 厦门海辰储能科技股份有限公司 | Lower plastic of battery, top cover assembly of battery and battery |
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