CN216354476U - Battery cover plate and battery pack - Google Patents
Battery cover plate and battery pack Download PDFInfo
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- CN216354476U CN216354476U CN202120936871.XU CN202120936871U CN216354476U CN 216354476 U CN216354476 U CN 216354476U CN 202120936871 U CN202120936871 U CN 202120936871U CN 216354476 U CN216354476 U CN 216354476U
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- insulating
- boss
- sheet
- central
- cover plate
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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 a battery, and particularly discloses a battery cover plate which comprises a base plate, an insulating ring hermetically connected with the upper part of the base plate, a rivet connected with the insulating ring, an insulating sheet connected with the lower part of the base plate and a connecting sheet connected with the insulating sheet, wherein the insulating sheet comprises an insulating sheet body and a plurality of insulating side plates integrally connected with the insulating sheet body, the connecting sheet comprises a welding plane and a convex sealing connecting boss, the sealing connecting boss comprises a central connecting boss and a plurality of peripheral connecting bosses, the central connecting boss is arranged in the central area of the connecting sheet or integrally formed in the central area of the connecting sheet, the peripheral connecting bosses are distributed in a fan shape around the central axis of the connecting sheet, and the insulating side plates and the peripheral connecting bosses are arranged in a one-to-one correspondence mode. The utility model also discloses a battery pack comprising the battery cover plate. The battery cover plate has the advantages of simple structure, convenience in installation and good use effect.
Description
Technical Field
The utility model relates to a battery, in particular to a battery cover plate. In addition, the utility model also relates to a battery pack comprising the battery cover plate.
Background
With the increasing maturity of lithium ion battery technology, lithium ion batteries are widely used in the field of electric vehicles as power batteries.
With the continuous development of electric vehicles, the requirement for the charging speed of the electric vehicles is higher and higher. The structural member of the lithium ion battery not only provides guarantee for the lithium ion battery in the aspect of safety and reliability, but also simultaneously considers the connection between an internal chemical system of the lithium ion battery pack and an external module so as to form the battery pack, and can directly influence the sealing performance and the overcurrent performance of the battery pack. In the structural member of the lithium ion battery, the battery cover plate is used as a structure for opening and closing the battery core, the overcurrent capacity of the battery pack is directly influenced, and the connecting sheet on the battery cover plate has the largest influence on the connection performance and the overcurrent capacity of the battery cover plate. The connecting sheet of the existing battery pack is connected with the insulating sheet, the contact area of the connecting sheet and the insulating sheet is large, the connecting effect is poor, and meanwhile, the overcurrent capacity of the connecting sheet is also influenced.
Therefore, a need exists for a battery cover plate that solves or overcomes the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, an aspect of the present invention is to provide a battery cover plate, which has a simple structure and a good overcurrent capability.
In addition, another aspect of the present invention is to provide a battery pack, in which the battery cover plate has a simple structure and a good overcurrent capability.
In order to achieve the above object, in one aspect, the present invention provides a battery cover plate, including a substrate, an insulating ring hermetically connected to an upper portion of the substrate, a rivet connected to the insulating ring, an insulating sheet connected to a lower portion of the substrate, and a connecting sheet connected to the insulating sheet, where the insulating sheet includes an insulating sheet body and a plurality of insulating edge plates integrally connected to the insulating sheet body, the connecting sheet includes a welding plane and a convex sealing connection boss, the sealing connection boss includes a central connection boss and a plurality of peripheral connection bosses, the central connection boss is disposed in or integrally formed with a central area of the connecting sheet, the peripheral connection bosses are distributed in a fan shape around a central axis of the connecting sheet, and the insulating edge plates and the peripheral connection bosses are disposed in one-to-one correspondence.
Further, each of the insulating edge plates is provided to extend outward from the center of the insulating sheet body.
Furthermore, an open annular groove is formed in the outer peripheral surface of the insulating sheet body, the upper surface of each insulating side plate is flush with the bottom surface of the annular groove, and the upper end edge of the annular groove is overlapped with the lower edge of the outer peripheral surface of the substrate.
Further, one end of each peripheral connecting boss is connected with the central connecting boss and is arranged to extend outwards from the center of the connecting piece.
Further, each of the peripheries is uniformly distributed around the central axis of the central connecting boss along the connecting boss.
Furthermore, the central connecting boss is in a circular truncated cone structure, and two sides of each peripheral connecting boss form curved surfaces or inclined planes.
Furthermore, the ratio of the width of the insulating side plate to the width of the upper surface of the peripheral connecting boss is 1-4.
Furthermore, a sealing ring is arranged between the base plate and the insulating ring, so that the base plate and the insulating ring can be in sealing connection.
Further, the rivet is kept away from the one end central area of insulating circle is equipped with the gasket mounting groove, gasket mounting groove in-connection has the gasket.
In addition, the utility model also provides a battery pack which comprises the battery cover plate according to any one of the technical schemes.
Compared with the prior art, the battery cover plate has the following advantages:
the battery cover plate is characterized in that the insulating sheet is arranged into the insulating sheet body and the insulating edge plates, the connecting sheet is arranged into the welding plane and the raised sealing connecting lug boss, the sealing connecting lug boss comprises a central connecting lug boss and a plurality of peripheral connecting lug bosses, the central connecting lug boss is arranged in the central area of the connecting sheet or is integrally formed in the central area of the connecting sheet, each edge plate and each peripheral connecting lug boss are arranged in a one-to-one correspondence mode, namely the peripheral connecting lug bosses are distributed in a fan shape around the central axis of the connecting sheet, the insulating edge plates are distributed in a fan shape around the central axis of the insulating sheet, the included angles between every two adjacent peripheral connecting lug bosses are equal, and the included angles between every two adjacent insulating edge plates are also equal. From this, when the insulating piece pastes with the connection piece and pastes, each insulating sideboard pastes with each week along connecting boss one-to-one and pastes, when can satisfying connection piece connection requirement, also can improve the ability of overflowing, simple structure, connection effect is good.
According to the technical scheme, the battery cover plate comprises a base plate, an insulating ring hermetically connected with the upper portion of the base plate, rivets connected with the insulating ring, an insulating sheet connected with the lower portion of the base plate and a connecting sheet connected with the insulating sheet, wherein the insulating sheet comprises an insulating sheet body and a plurality of insulating edge plates integrally connected with the insulating sheet body, the connecting sheet comprises a welding plane and convex sealing connecting bosses, each sealing connecting boss comprises a central connecting boss and a plurality of peripheral connecting bosses, the central connecting bosses are arranged in the central area of the connecting sheet or integrally formed in the central area of the connecting sheet, each peripheral connecting boss is distributed around the central axis of the connecting sheet in a fan shape, and each insulating edge plate and each peripheral connecting boss are arranged in one-to-one correspondence. According to the battery cover plate, the peripheral edge connecting bosses are arranged to be distributed in a fan shape around the central axis of the connecting sheet, the insulating side plates are arranged to be distributed in a fan shape around the central axis of the insulating sheet, and the insulating side plates and the peripheral edge connecting bosses are arranged in one-to-one correspondence, so that the peripheral edge connecting bosses can be connected with the insulating side plates, the connecting sheet is better in connecting effect and insulating effect, and the overcurrent capacity is higher.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of a battery cover plate according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of an insulating sheet according to the embodiment of the utility model;
FIG. 3 is a schematic diagram of a specific example of a connecting piece according to an embodiment of the utility model.
Description of reference numerals:
1 substrate 2 insulating ring
3 rivet 301 sealing piece mounting groove
4 insulating sheet 401 insulating sheet body
402 insulating sideboard 403 annular groove
5 connecting piece 501 welding plane
502 seal connection boss 5021 center connection boss
5022 peripheral connection boss 6 sealing ring
7 sealing sheet
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
It is to be understood that, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "contacting" are intended to be open-ended, i.e., connected as either a fixed or removable connection or an integral connection; the components may be directly connected or indirectly connected through an intermediate medium, or the components may be connected through an intermediate medium or the components may be in an interactive relationship with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in FIG. 1, the present invention provides a battery cover plate comprising a base plate 1, an insulating ring 2 hermetically connected to an upper portion of the base plate 1, rivets 3 connected to the insulating ring 2, an insulating sheet 4 connected to a lower portion of the base plate 1, and connecting pieces 5 connected to the insulating sheet 4, the insulation sheet 4 includes an insulation sheet body 401 and a plurality of insulation edge plates 402 integrally connected to the insulation sheet body 401, the connecting piece 5 comprises a welding plane 501 and a raised sealing connection boss 502, the sealing connection boss 502 comprises a central connection boss 5021 arranged in or integrally formed in the central area of the connecting piece 5 and a plurality of circumferential connection bosses 5022, each circumferential connection boss 5022 is distributed in a fan shape around the central axis of the connecting piece 5, and each insulating edge plate 402 is arranged in one-to-one correspondence with each peripheral connecting boss 5022.
As shown in fig. 1, the present invention provides a battery cover plate, which includes a substrate 1, an insulating ring 2 hermetically connected to an upper portion of the substrate 1, a rivet 3 connected to the insulating ring 2, an insulating sheet 4 connected to a lower portion of the substrate 1, and a connecting sheet 5 connected to the insulating sheet 4, wherein a sealing connection boss 502 of the connecting sheet 5 is connected to the insulating sheet 4, and a welding plane 501 can be welded to a case (not shown), so that the sealing performance and the overcurrent capability of the connecting sheet 5 directly affect the sealing performance and the overcurrent capability of the battery cover plate. In the utility model, the connecting sheet 5 comprises a welding plane 501 and a convex sealing connection boss 502, the welding plane 501 can be welded with the shell, the sealing connection boss 502 comprises a central connection boss 5021 and a plurality of peripheral connection bosses 5022 arranged in a central area, the insulating sheet 4 comprises an insulating sheet body 401 and a plurality of insulating side plates 402 integrally connected with the insulating sheet body 401, the bosses 5022 and the insulating side plates 402 are arranged in a one-to-one correspondence manner, and the width of the insulating side plates 402 is greater than that of the upper plane of the boss 5022, so that the welding effect of the connecting sheet 5 can be effectively ensured, and the insulating effect of the insulating sheet 4 can be ensured.
Further, as can be seen from fig. 2 and 3, the number of the bosses 5022 is three, correspondingly, the number of the insulating edge plates 402 is also three, the three bosses 5022 are uniformly distributed on the upper surface of the connecting sheet 5, the three insulating edge plates 402 are also uniformly distributed on the outer peripheral surface of the insulating sheet body 401, the bosses 5022 and the insulating edge plates 402 are arranged in a one-to-one correspondence manner, which does not affect the welding connection of the connecting sheet 5 nor the insulating connection of the connecting sheet 5 and the insulating sheet 4. In addition, it is contemplated that the number of the bosses 5022 and the insulating edge plate 402 may be two, four, or other numbers to satisfy the insulating connection, and all fall within the scope of the present invention.
As a preferred embodiment of the present invention, each of the insulating edge plates 402 is provided to extend outward from the center of the insulating sheet body 401. Preferably, both side surfaces of the insulating edge plate 402 are formed as surfaces parallel to each other.
More preferably, an open annular groove 403 is formed on the outer circumferential surface of the insulating sheet body 401, the upper surface of each insulating side plate 402 is flush with the bottom surface of the annular groove 403, and the upper end edge of the annular groove 403 coincides with the lower edge of the outer circumferential surface of the substrate 1.
As another preferred embodiment of the present invention, one end of each of the circumferential coupling protrusions 5022 is coupled to the central coupling protrusion 5021 and is disposed to extend outward from the center of the coupling piece 5.
More preferably, each of the circumferences is evenly distributed around a central axis of the central coupling boss 5021 along the coupling boss 5022.
Further preferably, the central coupling boss 5021 is formed in a circular truncated cone structure, and both sides of each peripheral edge coupling boss 5022 are formed as curved surfaces or inclined planes.
As shown in fig. 2 and 3, each peripheral edge coupling boss 5022 is provided to extend outwardly from the outer periphery of the central coupling boss 5021, and each insulating edge plate is provided to extend outwardly from the outer periphery of the insulating sheet body 401 and is formed in a fan-shaped structure of a fan blade structure.
As a specific structural form of the present invention, the ratio of the width of the insulating edge plate 402 to the width of the upper surface of the peripheral edge connecting boss 5022 is 1 to 4, so that the peripheral edge connecting boss 5022 of the insulating edge plate 402 of the insulating sheet 4, which can completely isolate the connecting tab 5, can be ensured, and the normal welding connection requirement of the welding plane 501 is not affected. It can be seen that the diameter of the insulating sheet body 401 is also larger than the diameter of the upper plane of the central connection boss 5021.
As another specific configuration of the present invention, a seal ring 6 is provided between the base plate 1 and the insulating ring 2 to enable the base plate 1 and the insulating ring 2 to be connected in a sealing manner.
The sealing ring 6 is formed into a stepped ring which is clamped in the central through hole of the substrate 1, and the outermost peripheral surface of the sealing ring 6 is attached to the inner peripheral surface of the central through hole of the insulating ring 2, so that the substrate 1 and the insulating ring 2 are connected in a sealing way.
As another specific structure form of the present invention, a central region of one end of the rivet 3 away from the insulating ring 2 is provided with a sealing piece installation groove 301, and a sealing piece 7 is connected in the sealing piece installation groove 301.
The rivet 3 is formed with a through hole at a central region thereof, and the sealing plate 7 is used to form the battery cover plate of the present invention into a sealing structure, so that, when the base plate 1, the insulating ring 2, the rivet 3, the insulating sheet 4 and the connecting sheet 5 are connected, the sealing plate 7 can be welded with the rivet 3 to form a sealing connection structure.
In addition, the utility model also provides a battery pack, and the battery cover plate is according to any one of the technical schemes of the first aspect.
As described above, the battery cover plate of the present invention includes a base plate 1, an insulating ring 2 hermetically connected to an upper portion of the base plate 1, rivets 3 connected to the insulating ring 2, an insulating sheet 4 connected to a lower portion of the base plate 1, and a connecting sheet 5 connected to the insulating sheet 4, wherein the insulating sheet 4 includes an insulating sheet body 401 and a plurality of insulating edge plates 402 integrally connected to the insulating sheet body 401, the connecting sheet 5 includes a welding plane 501 and a convex sealing connection boss 502, the sealing connection boss 502 includes a central connection boss 5021 and a plurality of peripheral connection bosses 5022, the peripheral connection bosses 5022 are arranged or integrally formed in a central region of the connecting sheet 5, and the insulating edge plates 402 and the peripheral connection bosses 5022 are arranged in a one-to-one correspondence. According to the battery cover plate, the plurality of insulating edge plates 402 of the insulating sheet 4 are arranged and distributed in a fan shape, the connecting sheets are arranged in a one-to-one correspondence mode along the connecting bosses 5022 and the insulating edge plates 402, and the ratio of the width of the insulating edge plates 402 to the peripheral connecting bosses 5022 is set to be 1-4, so that the insulating sheet 4 can be ensured to completely isolate the sealing connecting bosses 502 of the connecting sheets 5, the connecting performance and the overcurrent performance of the connecting sheets 5 can be ensured, the structure is simple, and the connecting effect is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The battery cover plate is characterized by comprising a substrate (1), an insulating ring (2) hermetically connected with the upper part of the substrate (1), rivets (3) connected with the insulating ring (2), an insulating sheet (4) connected with the lower part of the substrate (1) and connecting sheets (5) connected with the insulating sheet (4), wherein the insulating sheet (4) comprises an insulating sheet body (401) and a plurality of insulating edge plates (402) integrally connected with the insulating sheet body (401), the connecting sheets (5) comprise a welding plane (501) and a convex hermetically connected boss (502), the hermetically connected boss (502) comprises a central connecting boss (5021) and a plurality of peripheral connecting bosses (5022) which are arranged or integrally formed in the central area of the connecting sheets (5), and the peripheral connecting bosses (5022) are in fan-shaped distribution around the central axis of the connecting sheets (5), and each insulating side plate (402) and each peripheral connecting lug boss (5022) are arranged in a one-to-one correspondence mode.
2. The battery cover plate according to claim 1, wherein each of the insulating edge plates (402) is provided to extend outward from the center of the insulating sheet body (401).
3. The battery cover plate according to claim 2, wherein an open annular groove (403) is formed on the outer circumferential surface of the insulating sheet body (401), the upper surface of each insulating side plate (402) is flush with the bottom surface of the annular groove (403), and the upper end edge of the annular groove (403) coincides with the lower end edge of the outer circumferential surface of the base plate (1).
4. The battery cap plate according to claim 1, wherein one end of each of the circumferential coupling protrusions (5022) is coupled to the central coupling protrusion (5021) and is disposed to extend outward from the center of the coupling tab (5).
5. The battery cap plate according to claim 4, wherein each of the circumferences is uniformly distributed around a central axis of the central connection boss (5021) along the connection boss (5022).
6. The battery cap plate according to claim 5, wherein the central coupling boss (5021) is formed in a circular truncated cone structure, and both sides of each circumferential coupling boss (5022) are formed in a curved surface or an inclined plane.
7. The battery cap plate according to any one of claims 1 to 6, wherein the ratio of the width of the insulating edge plate (402) to the width of the upper surface of the peripheral connection boss (5022) is 1-4.
8. The battery cover plate according to any one of claims 1 to 6, characterized in that a sealing ring (6) is provided between the base plate (1) and the insulating ring (2) to enable a sealed connection to be formed between the base plate (1) and the insulating ring (2).
9. The battery cover plate according to any one of claims 1 to 6, wherein a central region of one end of the rivet (3) remote from the insulating ring (2) is provided with a sealing sheet installation groove (301), and a sealing sheet (7) is connected in the sealing sheet installation groove (301).
10. A battery pack characterized by comprising the battery cover plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120936871.XU CN216354476U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120936871.XU CN216354476U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216354476U true CN216354476U (en) | 2022-04-19 |
Family
ID=81128068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120936871.XU Active CN216354476U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216354476U (en) |
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2021
- 2021-04-30 CN CN202120936871.XU patent/CN216354476U/en active Active
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