CN214477677U - Top cover structure of power battery - Google Patents
Top cover structure of power battery Download PDFInfo
- Publication number
- CN214477677U CN214477677U CN202120670042.1U CN202120670042U CN214477677U CN 214477677 U CN214477677 U CN 214477677U CN 202120670042 U CN202120670042 U CN 202120670042U CN 214477677 U CN214477677 U CN 214477677U
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- China
- Prior art keywords
- nick
- power battery
- top cover
- wall
- reinforcing rib
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 57
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 239000011324 bead Substances 0.000 description 11
- 238000005728 strengthening Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides a power battery's top cap structure, a serial communication port, include: the cover plate is provided with a mounting area, the mounting area is provided with an inner wall, and the inner wall of the mounting area forms a hole; the edge of the explosion-proof sheet is welded to the mounting area, and the explosion-proof sheet is provided with notches which form a closed structure or a non-closed structure; and a reinforcing member connecting at least two different positions of the inner wall of the mounting region.
Description
Technical Field
The utility model relates to a power battery's top cap structure.
Background
The top cover structure of the power battery in the prior art comprises a cover plate. In order to improve the safety of the power battery and prevent the power battery from exploding due to excessive internal pressure, an explosion-proof hole is generally formed in a cover plate of the battery, and an explosion-proof plate is installed in the explosion-proof hole. The edge of the explosion-proof piece is fixed on the cover plate in a welding mode. When welding, the cover plate is partially shrunk due to stress generation, which may cause the width of the cover plate to be partially reduced and may cause deformation of the rupture disk. Therefore, the burst value of the finished power battery is affected, and safety risks exist.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a power battery's of structural design top cap structure.
The embodiment of the utility model provides a solve the technical scheme that above-mentioned problem adopted and be: a top cap structure of power battery, characterized by includes:
the cover plate is provided with a mounting area, the mounting area is provided with an inner wall, and the inner wall of the mounting area forms a hole;
the edge of the explosion-proof sheet is welded to the mounting area, and the explosion-proof sheet is provided with notches which form a closed structure or a non-closed structure; and
a reinforcement member connecting at least two different locations of an inner wall of the mounting region.
The embodiment of the utility model provides a reinforcing element includes first strengthening rib, first strengthening rib is followed the width direction of apron extends the setting, and its both ends are connected respectively the inner wall of installation area is in the ascending both sides of width direction of apron.
The embodiment of the utility model provides a reinforcing element includes the second strengthening rib, the second strengthening rib is followed the length direction of apron extends the setting, and its both ends are connected respectively installation area's inner wall is in the ascending both sides of length direction of apron.
The embodiment of the utility model provides a reinforcing element includes the third strengthening rib, the both ends of third strengthening rib respectively with the both sides of installation area's inner wall are connected, just the third strengthening rib with first strengthening rib forms an acute angle.
The embodiment of the utility model provides a the apron with reinforcing member formula structure as an organic whole constitutes.
The embodiment of the utility model provides a nick is the enclosed construction, the nick includes first nick and second nick, first nick reaches the second nick is cyclic annular.
The embodiment of the utility model provides a first nick with the second nick has a connecting point.
The embodiment of the utility model provides a first nick and second nick are "8" style of calligraphy.
The embodiment of the utility model provides a nick still includes the third nick, the third nick encircles first nick with the second nick sets up, just the third nick respectively with first nick with the second nick has the tie point.
The embodiment of the utility model provides a reinforcing member's area with the ratio of installation area's area is 1: 2 to 12.
Compared with the prior art, the utility model, have following one or more advantage or effect: the structure is simple, and the design is reasonable; through the setting of reinforcing member, can play the supporting role, can offset the stress that produces among at least some welding process, reduce the deformation degree of apron to reduce the extrusion after the explosion-proof piece welding, guarantee explosion-proof piece deflection and blast value in standard range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic perspective view of a top cover structure of a power battery according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of the explosion-proof sheet of fig. 1 with the explosion-proof sheet removed.
Fig. 3 is a schematic structural view of the rupture disk.
Fig. 4 is a schematic perspective view of a top cover structure of a power battery according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Example 1.
Referring to fig. 1 to 4, the top cover structure of the power battery of the present embodiment includes a cover plate 1 and an explosion-proof sheet 2.
The cover plate 1 in this embodiment has a mounting area with an inner wall 11, and the mounting area has an opening 12 formed in the inner wall 11. The cover plate 1 in this embodiment may be an aluminum cover plate.
The edge of the explosion-proof sheet 2 in this embodiment is welded to the mounting area, and the explosion-proof sheet 2 is provided with a notch 21, and the notch 21 forms a closed structure or a non-closed structure. When the internal pressure of the power battery is too high, the nicks 21 can burst to prevent larger damage.
The reinforcement member 3 in this embodiment connects at least two different locations of the inner wall 11 of the mounting area. Through the setting of reinforcing member 3, can play the supporting role, can offset the stress that produces among at least some welding process, reduce the deformation degree of apron 1 to reduce the extrusion to 2 welded backs of explosion-proof piece, guarantee 2 deflection of explosion-proof piece and blast value in standard range.
The reinforcing member 3 of the present embodiment includes a first reinforcing rib 31, and the first reinforcing rib 31 extends along the width direction of the cover plate 1, and two ends of the first reinforcing rib 31 are respectively connected to two sides of the inner wall 11 of the installation area in the width direction of the cover plate 1. The first reinforcing ribs 31 can reduce the shrinkage of the cover plate 1 at the inner wall 11 in the width direction.
The reinforcing member 3 of the present embodiment includes a second reinforcing rib 32, and the second reinforcing rib 32 extends along the length direction of the cover plate 1, and two ends of the second reinforcing rib are respectively connected to two sides of the inner wall 11 of the installation area in the length direction of the cover plate 1. The second reinforcing bead 32 can reduce the contraction of the cover plate 1 at the inner wall 11 in the length direction. The reinforcing member 3 in the present embodiment may include only the first reinforcing bead 31 and the second reinforcing bead 32.
As shown in fig. 4, the roof structure of fig. 4 is the same as the basic structure of the roof structure of fig. 1, except that the reinforcing member 3 of the roof structure of fig. 4 further includes a third reinforcing rib 33, both ends of the third reinforcing rib 33 are respectively connected to both sides of the inner wall 11 of the installation region, and the third reinforcing rib 33 forms an acute angle with the first reinforcing rib 31. The provision of the third reinforcing beads 33 improves the structural strength of the reinforcing member 3, thereby further improving the supporting effect of the reinforcing member 3. Two sets of third reinforcing beads 33 are provided. The first, second, and third reinforcing beads 31, 32, and 33 form a "m" shape.
As shown in fig. 1, the first reinforcing beads 31 and the second reinforcing beads 32 in the present embodiment are formed in an integral structure, and the reinforcing member 3 and the cover plate 1 are formed in an integral structure. As shown in fig. 4, the first bead 31, the second bead 32, and the third bead 33 in the present embodiment are formed in an integral structure. In this embodiment, the reinforcing member 3 and the cover plate 1 are formed as an integral structure, so as to facilitate the processing.
In this embodiment, the first ribs 31, the second ribs 32, and the third ribs 33 have the same thickness, and the thickness is smaller than the thickness of the cover plate 1. The first rib 31, the second rib 32, and the third rib 33 are located on the same plane. In the processing, the reinforcing member 3 is punched so that the thickness thereof is 0.5mm ± 0.1mm, and then cut to form the structure of the reinforcing member 3.
The score 21 is a closed structure, the score includes a first score 211 and a second score 212, and the first score 211 and the second score 212 are both annular. So that the nick 21 has two positions which can be burst, and the nick 21 can be burst when a certain pressure is ensured.
In this embodiment, the first notch 211 and the second notch 212 have a connection point 2101. The score 21 at this connection point 2101 is more likely to pop open than the other locations of the score 21.
In this embodiment, the first notch 211 and the second notch 212 are in an 8 shape.
In this embodiment, the score 21 further includes a third score 213, the third score 213 is disposed around the first score 211 and the second score 212, and the third score 213 has connection points 2102 and 2103 with the first score 211 and the second score 212, respectively.
In one embodiment, the cross-sectional areas of the first notch 211 and the second notch 222 are larger than the cross-sectional area of the third notch 213. In one embodiment, the widths of the first notch 211 and the second notch 222 are greater than the width of the third notch 213. In one embodiment, the depth of the first notch 211 and the second notch 222 is greater than the depth of the third notch 213. To ensure that the rupture disk 2 is preferentially ruptured at the first score 211 and/or the second score 212.
In the present embodiment, the ratio of the area of the reinforcing member 3 to the area of the mounting region is 1: 2 to 12. As shown in fig. 1, in one embodiment, the ratio of the area of the reinforcing member 3 to the area of the mounting region is 1: 5 to 12. As shown in fig. 4, in one embodiment, the ratio of the area of the reinforcing member 3 to the area of the mounting region is 1: 2 to 6. When the ratio of the area of the reinforcing member 3 to the area of the mounting region falls within the above range, the supporting strength of the reinforcing member 3 is ensured on the one hand, and the sufficient sectional area of the hole 12 is ensured on the other hand.
The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A top cap structure of power battery, characterized by includes:
the cover plate is provided with a mounting area, the mounting area is provided with an inner wall, and the inner wall of the mounting area forms a hole;
the edge of the explosion-proof sheet is welded to the mounting area, and the explosion-proof sheet is provided with notches which form a closed structure or a non-closed structure; and
a reinforcement member connecting at least two different locations of an inner wall of the mounting region.
2. The top cover structure of the power battery according to claim 1, characterized in that: the reinforcing member comprises a first reinforcing rib, the first reinforcing rib extends along the width direction of the cover plate, and two ends of the first reinforcing rib are respectively connected with two sides of the inner wall of the mounting area in the width direction of the cover plate.
3. The top cover structure of the power battery according to claim 2, characterized in that: the reinforcing member comprises a second reinforcing rib, the second reinforcing rib extends along the length direction of the cover plate, and two ends of the second reinforcing rib are respectively connected with two sides of the inner wall of the mounting area in the length direction of the cover plate.
4. The top cover structure of the power battery according to claim 3, characterized in that: the reinforcing member comprises a third reinforcing rib, two ends of the third reinforcing rib are respectively connected with two sides of the inner wall of the mounting area, and an acute angle is formed between the third reinforcing rib and the first reinforcing rib.
5. The top cover structure of the power battery according to claim 1, characterized in that: the cover plate and the reinforcing member are formed into an integral structure.
6. The top cover structure of the power battery according to claim 1, characterized in that: the nick is the enclosed construction, the nick includes first nick and second nick, first nick with the second nick is cyclic annular.
7. The top cover structure of the power battery according to claim 6, wherein: the first nick and the second nick are provided with a connecting point.
8. The top cover structure of the power battery according to claim 7, wherein: the first nick and the second nick are 8-shaped.
9. The top cover structure of the power battery according to claim 7, wherein: the nick also comprises a third nick which is arranged around the first nick and the second nick, and the third nick is respectively provided with a connecting point with the first nick and the second nick.
10. The top cover structure of the power battery according to claim 1, characterized in that: a ratio of an area of the reinforcing member to an area of the mounting region is 1: 2 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120670042.1U CN214477677U (en) | 2021-04-01 | 2021-04-01 | Top cover structure of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120670042.1U CN214477677U (en) | 2021-04-01 | 2021-04-01 | Top cover structure of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214477677U true CN214477677U (en) | 2021-10-22 |
Family
ID=78177160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120670042.1U Active CN214477677U (en) | 2021-04-01 | 2021-04-01 | Top cover structure of power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214477677U (en) |
-
2021
- 2021-04-01 CN CN202120670042.1U patent/CN214477677U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 86 Kechuang Road, Wuzhen Town, Tongxiang City, Jiaxing City, Zhejiang Province, 314501 Patentee after: Zhejiang Zhongze Precision Technology Co.,Ltd. Country or region after: China Address before: 314031 Building 9, hi tech equipment entrepreneurship center, Xiuzhou District, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG ZZ PRECISION TECHNOLOGY CO.,LTD. Country or region before: China |
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| CP03 | Change of name, title or address |