CN216354478U - Battery cover plate and battery pack - Google Patents
Battery cover plate and battery pack Download PDFInfo
- Publication number
- CN216354478U CN216354478U CN202120943540.9U CN202120943540U CN216354478U CN 216354478 U CN216354478 U CN 216354478U CN 202120943540 U CN202120943540 U CN 202120943540U CN 216354478 U CN216354478 U CN 216354478U
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- insulating ring
- insulating
- rotation stopping
- rivet
- substrate
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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 a first rotation stopping structure is arranged on the attached surface of the base plate and the insulating ring, a second rotation stopping structure is arranged on the attached surface of the insulating ring and the rivet, the first rotation stopping structure is suitable for limiting the relative rotation between the base plate and the insulating ring, the second rotation stopping structure is suitable for limiting the relative rotation between the insulating ring and the rivet, the connecting sheet comprises a welding plane and a raised reinforcing structure, and the reinforcing structure and the insulating sheet are consistent in shape. 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. The structural part of the lithium ion battery is also an important component of the lithium ion power battery, and not only can the safety and reliability of the lithium ion battery be guaranteed, but also the connection of a chemical system inside the lithium ion battery and an external module is also considered; because various connection relations exist in the structural component and the requirements of sealing performance and overcurrent performance need to be considered at the same time, the design scheme of the structural component is particularly important, the connecting sheet is used as a structure for starting and stopping the inside of the battery cell and is used as an important overcurrent carrier of the battery, and the design scheme is more important.
In current battery package, require behind fastener and the base plate connection that relative rotation can not take place to influence product property ability, however, behind current fastener and the base plate connection, because of the vibrations in the insecure or daily use of connection, it is easy not hard up to connect, and then makes relative rotation take place between the two, influences the whole sealing performance of battery apron, influences the wholeness ability of battery.
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, is convenient to install, and has a good installation effect.
In addition, another aspect of the present invention is to provide a battery pack, in which the battery cover plate has a simple structure, is convenient to install, and has a good installation effect.
In order to achieve the above object, an aspect of 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, wherein a first rotation stopping structure is disposed on a surface of the substrate, which is in contact with the insulating ring, and a second rotation stopping structure is disposed on a surface of the insulating ring, which is in contact with the rivet, the first rotation stopping structure is adapted to limit a relative rotation between the substrate and the insulating ring, the second rotation stopping structure is adapted to limit a relative rotation between the insulating ring and the rivet, the connecting sheet includes a welding plane and a protruding reinforcing structure, and the reinforcing structure and the insulating sheet have the same shape.
Furthermore, a substrate groove is formed on the upper end face of the substrate, the first rotation stopping structure comprises a substrate rotation stopping groove arranged in the substrate groove and an insulating ring rotation stopping protrusion arranged on or integrally formed on the lower end face of the insulating ring, and the insulating ring rotation stopping protrusion is suitable for being inserted into the substrate rotation stopping groove.
Furthermore, a flange edge is integrally formed on the peripheral surface of the rivet, an installation groove is formed at the upper end of the insulating ring, the second rotation stopping structure comprises a rivet rotation stopping protrusion arranged on or integrally formed on the end surface, close to the insulating ring, of the flange edge and an insulating ring rotation stopping groove arranged in the installation groove, and the rivet rotation stopping protrusion is suitable for being inserted into the insulating ring rotation stopping groove.
Further, the mounting groove and the bottom surface of the substrate groove are both formed into planes, the lower surface of the flange edge is suitable for being attached to the bottom plane of the mounting groove, and the lower end surface of the insulating ring can be attached to the bottom plane of the substrate groove.
Further, the reinforcing structure comprises a reinforcing boss arranged in the central area of the connecting piece or integrally formed on the central area of the connecting piece and at least two reinforcing ribs, wherein one end of each reinforcing rib is connected with the reinforcing boss and is arranged to extend outwards from the center of the connecting piece.
Further, each reinforcing rib is evenly distributed around the central axis of the reinforcing boss.
Furthermore, the insulating sheet includes insulating sheet body and with a plurality of insulating sideboard of insulating sheet body coupling, each insulating sideboard sets up to follow the center of insulating sheet outwards extends, and each insulating sideboard with each the strengthening rib one-to-one sets up.
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.
Furthermore, a sealing piece mounting groove is formed in the center area of one end, far away from the insulating ring, of the rivet, and a sealing piece is connected in the sealing piece mounting groove.
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:
according to the battery cover plate, the first rotation stopping structure is arranged on the surface, attached to each other, of the base plate and the insulating ring, the second rotation stopping structure is arranged on the surface, attached to the rivet, of the insulating ring, the first rotation stopping structure can guarantee that the base plate and the insulating ring do not rotate relatively after the insulating ring is installed on the base plate, and the second rotation stopping structure can guarantee that the insulating ring and the rivet do not rotate relatively after the rivet is installed on the insulating ring. Meanwhile, the shapes of the reinforcing structures of the insulating sheet and the connecting sheet are consistent, so that a better insulating effect can be achieved between the insulating sheet and the connecting sheet, and the battery cover plate has a better connecting effect.
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, a rivet 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 a first rotation stopping structure is arranged on the abutted surface of the base plate and the insulating ring, a second rotation stopping structure is arranged on the abutted surface of the insulating ring and the rivet, the first rotation stopping structure is suitable for limiting relative rotation between the base plate and the insulating ring, the second rotation stopping structure is suitable for limiting relative rotation between the insulating ring and the rivet, the connecting sheet comprises a welding plane and a raised reinforcing structure, and the reinforcing structure and the insulating sheet are consistent in shape. The first rotation stopping structure and the second rotation stopping structure of the battery cover plate can ensure that the base plate, the insulating ring and the rivet do not rotate mutually after being connected, the connection stability of the base plate, the insulating ring and the rivet is ensured, and the insulating sheet and the connecting sheet have higher insulating property, so that the battery cover plate is simple in structure and good in connection effect.
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 a substrate according to the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of an insulating ring according to the present invention;
fig. 4 is a schematic structural view of an embodiment of the rivet according to the embodiment of the present invention.
Description of reference numerals:
1 substrate 101 substrate recess
2 insulating ring 201 mounting groove
3 rivet 301 flange
302 sealing plate mounting groove 4 insulation sheet
401 insulating sheet body 402 insulating edge plate
5 connecting piece 501 welding plane
502 strengthening structure 5021 strengthening boss
5022 first rotation stopping structure for reinforcing rib 6
601 insulating ring rotation stopping protrusion 602 substrate rotation stopping groove
7 rivet rotation stopping protrusion of second rotation stopping structure 701
702 insulating ring spin-stop groove 8 sealing ring
9 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, which includes a base plate 1, an insulating ring 2 hermetically connected to an upper portion of the base plate 1, a rivet 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 a first rotation stopping structure 6 is disposed on a contact surface of the base plate 1 and the insulating ring 2, a second rotation stopping structure 7 is disposed on a contact surface of the insulating ring 2 and the rivet 3, the first rotation stopping structure 6 is adapted to limit relative rotation between the base plate 1 and the insulating ring 2, the second rotation stopping structure 7 is adapted to limit relative rotation between the insulating ring 2 and the rivet 3, the connecting sheet 5 includes a welding plane 501 and a raised reinforcing structure 502, and the reinforcing structure 502 and the insulating sheet 4 have the same shape.
In the battery cover plate of the utility model, the insulating ring 2 is arranged on the upper part of the substrate 1 to form sealing connection, the rivet 3 is connected with the insulating ring 2, the insulating sheet 4 is connected on the lower part of the substrate 1, and the connecting sheet 5 is connected on the lower surface of the insulating sheet 4. As can be seen from figure 1, the substrate 1, the insulating ring 2 and the rivet 3 are all formed into a circular ring structure, so that the three parts are easy to rotate relatively after being connected, the connection effect is influenced, and the sealing effect among all parts is influenced. Therefore, in the utility model, a first rotation stopping structure 6 is arranged on the abutted surface of the base plate 1 and the insulating ring 2, a second rotation stopping structure 7 is arranged on the abutted surface of the insulating ring 2 and the rivet 3, the first rotation stopping structure 6 can limit the relative rotation between the base plate 1 and the insulating ring 2, and the second rotation stopping structure 7 can limit the relative rotation between the insulating ring 2 and the rivet 3. From this, base plate 1, insulating ring 2 and rivet 3 connect the back, can realize the relative pivoted condition that can not appear between the three, and then guarantee the stability of base plate 1, insulating ring 2 and rivet 3's connection.
In addition, the connecting sheet 5 includes a welding plane 501 and a convex reinforcing structure 502, and the insulating sheet 4 is attached to the connecting sheet 5, and more specifically, the insulating sheet 4 is attached to the reinforcing structure 502 of the connecting sheet 5, so that the shapes of the reinforcing structure 502 and the insulating sheet 4 are consistent to ensure the attaching effect of the connecting sheet 5 and the insulating sheet 4, and the insulating effect is better.
As a preferred embodiment of the present invention, a substrate groove 101 is formed on the upper end surface of the substrate 1, the first rotation stopping structure 6 includes a substrate rotation stopping groove 602 disposed in the substrate groove 101 and an insulating ring rotation stopping protrusion 601 disposed on or integrally formed on the lower end surface of the insulating ring 2, and the insulating ring rotation stopping protrusion 601 is adapted to be inserted into the substrate rotation stopping groove 602.
More preferably, a flange 301 is integrally formed on the outer peripheral surface of the rivet 3, an installation groove 201 is formed at the upper end of the insulating ring 2, the second rotation stopping structure 7 includes a rivet rotation stopping protrusion 701 arranged on or integrally formed on the end surface of the flange 301 close to the insulating ring 2 and an insulating ring rotation stopping groove 702 arranged in the installation groove 201, and the rivet rotation stopping protrusion 701 is adapted to be inserted into the insulating ring rotation stopping groove 702.
It should be noted here that, as understood from the positional relationship of the components in fig. 1, the end surface of the flange 301 close to the insulating ring 2 may be understood as the lower end surface of the flange 301.
Further preferably, the bottom surfaces of the mounting groove 201 and the substrate groove 101 are formed as planes, the lower surface of the flange 301 is adapted to abut against the bottom plane of the mounting groove 201, and the lower end surface of the insulating ring 2 can abut against the bottom plane of the substrate groove 101.
As shown in fig. 2 to 4, the battery cover plate of the present invention is provided with three first rotation stopping structures 6 and three second rotation stopping structures 7, and the three first rotation stopping structures 6 and the three second rotation stopping structures 7 are uniformly distributed around the central axis of the battery cover plate. It should be noted that, the number of the first rotation stopping structures 6 and the second rotation stopping structures 7 is not limited to three, and may be one, two, or three or more, when the number of the first rotation stopping structures 6 and the second rotation stopping structures 7 is one, the positions of the first rotation stopping structures 6 are set at any positions on the opposite surfaces of the substrate 1 and the insulating ring 2, and the second rotation stopping structures 7 are set at any positions on the opposite surfaces of the insulating ring 2 and the rivet 3. When the number of the first rotation stopping structures 6 and the second rotation stopping structures 7 is greater than or equal to two, preferably, the first rotation stopping structures 6 and the second rotation stopping structures 7 are arranged to be uniformly distributed around the central axis of the battery cover plate, so that the first rotation stopping structures 6 and the second rotation stopping structures 7 are stressed more uniformly when the base plate 1 and the insulating ring 2 and the rivet 3 rotate relatively.
As a specific structural form of the present invention, the reinforcing structure 502 includes a reinforcing protrusion 5021 provided at or integrally formed at a central region of the coupling piece 5, and at least two reinforcing protrusions 5022, and one end of each reinforcing protrusion 5022 is connected to the reinforcing protrusion 5021 and is disposed to extend outward from the center of the coupling piece 5. In the present invention, the term "outer" is used to mean that the connecting piece 5 is taken as an example, the central region of the connecting piece 5 is inner, and the peripheral surface of the connecting piece 5 is located at an outer position relative to the central region. I.e. the direction indicated by the arrow on the connecting piece 5 in fig. 1 is the outward direction.
More specifically, each of the reinforcement ribs 5022 is uniformly distributed around the central axis of the reinforcement boss 5021.
More specifically, 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, each of the insulating edge plates 402 is arranged to extend outward from the center of the insulating sheet 4, and each of the insulating edge plates 402 is arranged in one-to-one correspondence with each of the reinforcing ribs 5022.
As can be seen from fig. 1, the central region of the connecting piece 5 of the present invention is provided as a reinforcing boss 5021, three reinforcing ribs 5022 are connected to the circumference of the reinforcing boss 5021, and the three reinforcing ribs 5022 are uniformly distributed around the central axis of the reinforcing boss 5021. In addition, the reinforcing boss 5021 is formed in a circular truncated cone structure, and both side edges of each reinforcing rib 5022 are formed in a plane or a curved surface which is inclined inward from bottom to top. The number of the reinforcing ribs 5022 is not limited to three, two or more than three, the insulating side plates 402 of the insulating sheets 4 are arranged in one-to-one correspondence with the reinforcing ribs 5022, and the insulating side plates 402 are attached to the surfaces of the reinforcing ribs 5022, so that the connecting effect of the connecting sheets 5 and the insulating sheets 4 is better.
As another specific configuration of the present invention, a seal ring 8 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 8 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 8 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 302, and a sealing piece 9 is connected in the sealing piece installation groove 302.
The central area of the rivet 3 is formed as a through hole, and the sealing plate 9 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 9 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, a rivet 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 a first rotation stopping structure 6 is disposed on a contact surface of the base plate 1 and the insulating ring 2, a second rotation stopping structure 7 is disposed on a contact surface of the insulating ring 2 and the rivet 3, the first rotation stopping structure 6 is adapted to limit a relative rotation between the base plate 1 and the insulating ring 2, the second rotation stopping structure 7 is adapted to limit a relative rotation between the insulating ring 2 and the rivet 3, the connecting sheet 5 includes a welding plane 501 and a convex reinforcing structure 502, and the reinforcing structure 502 and the insulating sheet 4 have the same shape. According to the battery cover plate, the first rotation stopping structure 6 is arranged on the abutted surface of the base plate 1 and the insulating ring 2, and the second rotation stopping structure 7 is arranged on the abutted surface of the insulating ring 2 and the rivet 3, so that after the base plate 1 is connected with the insulating ring 2, the insulating ring 2 and the rivet 3, the base plate 1 is not rotated relative to the insulating ring 2, the insulating ring 2 and the rivet 3, the connection effect is ensured, in addition, the connecting piece 5 is set to be consistent with the reinforcing structure 502 of the connecting piece 5 in shape, and the insulating connection effect of the base plate, the insulating ring and the rivet is ensured.
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 portion of the substrate (1), a rivet (3) connected with the insulating ring (2), an insulating sheet (4) connected with the lower portion of the substrate (1) and a connecting sheet (5) connected with the insulating sheet (4), wherein a first rotation stopping structure (6) is arranged on a surface, attached to the substrate (1) and the insulating ring (2), of the insulating ring (2), a second rotation stopping structure (7) is arranged on a surface, attached to the insulating ring (2) and the rivet (3), of the insulating ring (2) and the rivet (3), the first rotation stopping structure (6) is suitable for limiting relative rotation between the substrate (1) and the insulating ring (2), the second rotation stopping structure (7) is suitable for limiting relative rotation between the insulating ring (2) and the rivet (3), the connecting sheet (5) comprises a welding plane (501) and a raised reinforcing structure (502), the reinforcing structure (502) and the insulating sheet (4) are in the same shape.
2. The battery cover plate according to claim 1, wherein a substrate groove (101) is formed on the upper end surface of the substrate (1), the first rotation stopping structure (6) comprises a substrate rotation stopping groove (602) arranged in the substrate groove (101) and an insulating ring rotation stopping protrusion (601) arranged on or integrally formed on the lower end surface of the insulating ring (2), and the insulating ring rotation stopping protrusion (601) is adapted to be inserted into the substrate rotation stopping groove (602).
3. The battery cover plate according to claim 2, wherein a flange (301) is integrally formed on the outer peripheral surface of the rivet (3), a mounting groove (201) is formed at the upper end of the insulating ring (2), the second rotation stopping structure (7) comprises a rivet rotation stopping protrusion (701) arranged on or integrally formed on the end surface of the flange (301) close to the insulating ring (2) and an insulating ring rotation stopping groove (702) arranged in the mounting groove (201), and the rivet rotation stopping protrusion (701) is suitable for being inserted into the insulating ring rotation stopping groove (702).
4. The battery cover plate according to claim 3, wherein the bottom surfaces of the mounting groove (201) and the substrate groove (101) are formed as planes, the lower surface of the flange (301) is adapted to abut against the bottom plane of the mounting groove (201), and the lower end surface of the insulating ring (2) can abut against the bottom plane of the substrate groove (101).
5. The battery cap plate according to claim 1, wherein the reinforcing structure (502) comprises a reinforcing protrusion (5021) provided at or integrally formed at a central region of the coupling tab (5) and at least two reinforcing ribs (5022), and one end of each reinforcing rib (5022) is connected to the reinforcing protrusion (5021) and is disposed to extend outward from the center of the coupling tab (5).
6. The battery cap plate according to claim 5, wherein the reinforcing beads (5022) are uniformly distributed around the central axis of the reinforcing boss (5021).
7. The battery deck plate according to claim 5, wherein the insulating sheet (4) comprises an insulating sheet body (401) and a plurality of insulating edge plates (402) integrally connected to the insulating sheet body (401), each of the insulating edge plates (402) is arranged to extend outward from the center of the insulating sheet (4), and each of the insulating edge plates (402) is arranged in one-to-one correspondence with each of the reinforcing ribs (5022).
8. The battery cover plate according to any one of claims 1 to 7, characterized in that a sealing ring (8) 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 7, wherein a central region of one end of the rivet (3) remote from the insulating ring (2) is provided with a sealing piece installation groove (302), and a sealing piece (9) is connected in the sealing piece installation groove (302).
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 |
|---|---|---|---|
| CN202120943540.9U CN216354478U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120943540.9U CN216354478U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216354478U true CN216354478U (en) | 2022-04-19 |
Family
ID=81129513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120943540.9U Active CN216354478U (en) | 2021-04-30 | 2021-04-30 | Battery cover plate and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216354478U (en) |
-
2021
- 2021-04-30 CN CN202120943540.9U patent/CN216354478U/en active Active
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