CN213184502U - Explosion-proof sheet for square battery, cover plate with explosion-proof sheet and square battery - Google Patents
Explosion-proof sheet for square battery, cover plate with explosion-proof sheet and square battery Download PDFInfo
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- CN213184502U CN213184502U CN202022427304.XU CN202022427304U CN213184502U CN 213184502 U CN213184502 U CN 213184502U CN 202022427304 U CN202022427304 U CN 202022427304U CN 213184502 U CN213184502 U CN 213184502U
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- explosion
- proof
- length
- region
- proof sheet
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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 discloses an apron, square cell that is used for square cell's explosion-proof piece and has it, explosion-proof piece includes: explosion-proof nick that has the opening mouth is set up to explosion-proof chip body and connecting piece on the explosion-proof chip body, explosion-proof nick will explosion-proof chip body divides into first region and second region, wherein, the second region is located the inside in first region, the opening mouth is located first region with between the second region, the connecting piece is located opening mouth department, first region with the second region passes through the connecting piece links to each other. According to the utility model discloses explosion-proof piece can not the departure when the blasting to the explosion-proof piece that prevents to fly away causes the electrical part short circuit, thereby can improve the security of electrical part in the battery.
Description
Technical Field
The utility model belongs to the technical field of the battery technique and specifically relates to an apron, square cell that is used for square cell's explosion-proof piece and has it.
Background
In the related art, 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 battery cover plate, an explosion-proof valve is installed in the explosion-proof hole, and when the internal pressure of the battery is excessive, the explosion-proof valve can be broken to release pressure.
Generally, the explosion-proof device for the power battery comprises a valve body, a pressing ring, an explosion-proof membrane and a sealing ring. The anti-explosion diaphragm comprises an outer mounting part and an inner anti-explosion diaphragm, wherein the outer area of the anti-explosion diaphragm is provided with a notch, the inner area of the notch of the outer side of the anti-explosion diaphragm is provided with a notch, and the notch of the inner area is connected with the notch of the outer side.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an explosion-proof piece for square battery, explosion-proof piece can not fly out when the blasting to the explosion-proof piece that prevents to fly out causes the short circuit of electric part, thereby can improve the security of electric part.
The utility model discloses provide one kind again have the apron of explosion-proof piece.
The utility model discloses still provide one kind and have the square battery of apron.
According to the utility model discloses the rupture disk of first aspect embodiment, the rupture disk includes: explosion-proof nick that has the opening mouth is set up to explosion-proof chip body and connecting piece on the explosion-proof chip body, explosion-proof nick will explosion-proof chip body divides into first region and second region, wherein, the second region is located the inside in first region, the opening mouth is located first region with between the second region, the connecting piece is located opening mouth department, first region with the second region passes through the connecting piece links to each other.
According to the utility model discloses explosion-proof piece is through establishing opening department with the connecting piece, and the both ends of connecting piece link to each other with first region and second region respectively for when explosion-proof piece blasting, the second region that is located explosion-proof nick can not break away from first region under the effect of connecting piece pulling force, with the joint strength who improves the connecting piece, thereby makes the second region can not the departure, and then can improve the security of battery.
In addition, according to the utility model discloses an explosion-proof piece can also have following additional technical characterstic:
in some embodiments of the present invention, the connector comprises: a first portion connecting the first region and a second portion connecting the second region.
Optionally, the connector further comprises: a third portion disposed between the first portion and the second portion, the third portion being located at the open mouth, a length of the third portion being no greater than a length of the open mouth.
Optionally, the length of the third portion is equal to the length of the first portion and less than the length of the second portion.
In some embodiments of the invention, the length of the first portion is not greater than the length of the open mouth, and the length of the second portion is greater than the length of the open mouth.
Optionally, the length of the first portion and the length of the second portion are equal and both greater than the length of the open mouth.
In some embodiments of the present invention, the explosion-proof sheet further comprises: the bulge is arranged at the outer edge of the first area, and the shape of the explosion-proof sheet body is substantially similar to that of the bulge.
Optionally, the explosion-proof score and the bulge are arranged at a distance, and one end of the connecting piece is located between the explosion-proof score and the bulge.
The utility model discloses the apron of the explosion-proof piece that has above-mentioned embodiment is proposed again.
According to the utility model discloses the apron of second aspect embodiment includes: top cap and explosion-proof piece form the explosion-proof hole on the top cap, the orthographic projection in explosion-proof hole is located inside the orthographic projection of explosion-proof piece, the explosion-proof piece with after the cooperation of explosion-proof hole, the bellied periphery wall of explosion-proof piece with weld behind the internal perisporium butt in explosion-proof hole.
From this, according to the utility model discloses the apron is through locating the explosion-proof piece on the apron to make welding behind the bellied periphery wall of explosion-proof piece and the internal perisporium butt in explosion-proof hole, can improve the efficiency of explosion-proof piece cooperation installation, also can make to weld the bellied back and can seal the explosion-proof hole simultaneously.
The utility model discloses still provide a square battery of apron that has above-mentioned embodiment.
According to the utility model discloses square battery of third aspect embodiment includes: the sealing device comprises a shell and a cover plate, wherein a mounting opening is formed in the shell, and the cover plate is matched on the mounting opening to seal the shell.
According to the utility model discloses square battery is through locating the apron on the casing for when the pressure in the square battery casing is higher, can blast through the explosion-proof piece on the apron, and the explosion-proof piece can not break away from the apron when the blasting, thereby can improve the battery security, also can prevent that the explosion-proof piece of departure from damaging spare part or staff on every side simultaneously.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a prismatic battery according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cover plate with an explosion-proof sheet according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an explosion-proof sheet according to an embodiment of the present invention;
fig. 4 is a schematic structural view of the explosion-proof sheet according to the embodiment of the present invention after the connecting member is removed;
fig. 5 is a schematic structural diagram of a connecting piece of the explosion-proof sheet according to an embodiment of the invention;
reference numerals:
an explosion-proof sheet 10 for a square battery;
an explosion-proof sheet body 1; a first region 11; a second region 12;
an explosion-proof score 2; an opening 21;
a connecting member 3; a first portion 31; a second portion 32; a third portion 33;
a protrusion 4;
a cover plate 100;
a top cover 20; a blast hole 201;
a square battery 1000;
a housing 200.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "thickness", "left", "right", "vertical", "horizontal", "inner", "outer", and the like 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, and 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 therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following describes the explosion-proof sheet 10 for the square battery according to the embodiment of the present invention with reference to fig. 1 to 5, wherein the explosion-proof sheet 10 can be disposed on the cover plate 100, the cover plate 100 can be fitted on the case 200 of the square battery 1000 to form the square battery 1000, and when the pressure inside the case 200 is large, the cover plate 100 at the position where the explosion-proof sheet 10 is disposed can be exploded to release the pressure and prevent the explosion of the battery 1000, so that the battery 1000 can be protected.
As shown in fig. 1 to 5, an explosion-proof sheet 10 according to an embodiment of the present invention includes: explosion-proof piece body 1 and connecting piece 3.
Specifically, an explosion-proof score 2 with an opening 21 is arranged on the explosion-proof sheet body 1, the explosion-proof score 2 divides the explosion-proof sheet body 1 into a first area 11 and a second area 12, wherein the second area 12 is positioned inside the first area 11, and the opening 21 is positioned between the first area 11 and the second area 12.
That is, the explosion-proof score 2 may be engraved on the explosion-proof sheet 10, and when the pressure inside the battery 1000 is large, the explosion-proof score 2 may burst to improve the effect of bursting the explosion-proof sheet 10 and prevent the battery 1000 from bursting due to the excessive pressure inside the battery 1000. Further, by making the explosion-proof score 2 non-closed, as shown in fig. 3, the explosion-proof score 2 is formed with an open mouth 21 so that the second region 12 surrounded by the explosion-proof score 2 and the first region 11 located outside the explosion-proof score 2 can be connected through the open mouth 21, and further the first region 11 and the second region 12 are adjacent through the open mouth 21 at the time of explosion of the explosion-proof sheet 10, so that the second region 12 does not fly out, and thus the safety of the electrical components of the square battery 1000 can be improved.
In the prior art, the rupture effect of the rupture disk 10 is improved by providing the rupture disk 10 with notches, but the rupture disk 10 flies out when the rupture disk 10 is ruptured, and the flying rupture disk 10 comes into contact with electrical components of the battery 1000, thereby causing a short circuit in the battery 1000.
Further, the connecting member 3 is disposed at the opening 21, and the first region 11 and the second region 12 are connected through the connecting member 3, that is, by connecting one end of the connecting member 3 to the first region 11 and connecting the other end of the connecting member 3 to the second region 12, when the explosion-proof sheet 10 is exploded, the second region 12 located in the explosion-proof notch 2 is not separated from the first region 11 by the tensile force of the connecting member 3, so that the second region 12 is not popped out of the first region 11, and the safety of the battery 1000 can be improved.
In addition, by connecting the first region 11 and the second region 12 together by the connecting member 3, even if the opening 21 between the first region 11 and the second region 12 is broken, the first region 11 and the second region 12 do not separate, so that it can be ensured that the second region 12 does not fly out when a burst occurs, and the safety of the battery 1000 can be ensured.
According to the utility model discloses explosion-proof piece 10, through establishing opening department 21 with connecting piece 3, and the both ends of connecting piece 3 link to each other with first region 11 and second region 12 respectively for when explosion-proof piece 10 explodes, second region 12 that is located explosion-proof nick 2 can not break away from first region 11 under the effect of connecting piece 3 pulling force, with the joint strength who improves connecting piece 3, thereby make second region 12 can not the departure, and then can improve battery 1000's security.
In some embodiments of the present invention, the connecting member 3 includes: first portion 31 and second portion 32, first portion 31 connecting first region 11 and second portion 32 connecting second region 12, for example, as shown in fig. 3, by connecting first portion 31 to first region 11 and second portion 32 to second region 12, the connection between first region 11 and second region 12 can be improved, so that first region 11 and second region 12 do not separate during a high-pressure explosion, thereby improving the safety of battery 1000.
Optionally, the connecting member 3 further comprises: a third portion 33, the third portion 33 is disposed between the first portion 31 and the second portion 32, the third portion 33 is located at the opening 21, the length of the third portion 33 is not greater than the length of the opening 21, wherein the length of the opening 21 can be understood as the distance between two ends of the explosion-proof score 2, and the length of the third portion 33 is the same as the length direction of the opening 21.
The length of the third portion 33 may be smaller than the length of the opening 21, and the length of the third portion 33 may also be equal to the length of the opening 21, and the third portion 33 may be conveniently provided at the opening 21 by setting the length of the third portion 33 to be not greater than the length of the opening 21.
For example, as shown in fig. 3, one end of the third portion 33 is connected to the first portion 31, and the other end of the third portion 33 is connected to the second portion 32, so that the third portion 33 may be folded when the explosion-proof sheet 10 is exploded, and the third portion 33 may be broken due to the long-term folding, and thus, by disposing the third portion 33 at the opening 21, the number of times of folding and the folding strength of the third portion 33 may be reduced, and the third portion 33 may be protected, thereby improving the firmness of the first region 11 and the second region 12.
In one example, the first portion 31, the second portion 32, and the third portion 33 are integrally formed, which not only reduces the assembly steps of the connector 3, but also allows the third portion 33 to be securely connected between the first portion 31 and the second portion 32.
Alternatively, the length of the third portion 33 is equal to the length of the first portion 31 and is smaller than the length of the second portion 32, for example, as shown in fig. 5, the length of the first portion 31 is equal to the length of the third portion 33, wherein the length direction of the first portion 31 is the same as the length direction of the third portion 33 (e.g., the left-right direction in fig. 3), and the length direction of the second portion 32 is the same as the length direction of the third portion 33. Thus, the connector 3 can be easily installed by making the length of the first portion 31 equal to the length of the third portion 33, and the second portion 32 can be connected lower than the second region 12 firmly by making the length of the second portion 32 greater than the lengths of the first portion 31 and the third portion 33 when the explosion-proof sheet 10 is exploded, preventing the second region 12 from flying out.
Alternatively, the length of the first portion 31 is not greater than the length of the opening 21, and the length of the second portion 32 is greater than the length of the opening 21, whereby the area of the second portion 32 connected to the second region 12 can be increased, so that the connecting member 3 can be firmly connected to the second region 12.
Alternatively, the length of the first portion 31 and the length of the second portion 32 are equal and both greater than the length of the opening 21, that is, the length of the first portion 31 and the length of the second portion 32 may be equal, and both greater than the length of the opening 21, so that the length of both the first portion 31 and the second portion 32 is greater than the length of the third portion 33, since the connection area of the first portion 31 to the first region 11 and the connection area of the second portion 32 to the second region 12 can be increased, so that, when the explosion occurs, the first portion 31 is firmly attached to the first region 11, the second portion 32 is firmly attached to the second region 12, so that the first portion 31 does not disengage from the first region 11, the second portion 32 does not disengage from the second region 12, so that the second region 12 located inside the explosion-proof score 2 does not fly out to improve the safety of the battery 1000.
In some embodiments of the present invention, the explosion-proof sheet 10 includes: the protrusions 4, the protrusions 4 are disposed at the outer edge of the first region 11, and the shape of the rupture disk body 1 is substantially similar to the shape of the protrusions 4, that is, the protrusions 4 may be disposed adjacent to the outer edge of the first region 11, and further, by substantially similar the shape of the rupture disk body 1 to the shape of the protrusions 4, when the protrusions 4 are welded to the cover plate 100, there is no gap between the rupture disk body 1 and the cover plate 100 after welding, so that the cover plate 100 may seal the housing 200 after the cover plate 100 is disposed on the housing 200 of the battery 1000.
In addition, when the explosion-proof sheet 10 is installed on the cover plate 100, the protrusion 4 can be installed toward the cover plate 100 in a matching manner, and when the explosion-proof sheet 10 is installed, the protrusion 4 can be aligned with the explosion-proof hole 201 formed in the cover plate 100 to improve the installation efficiency, and therefore, the protrusion 4 plays a role in positioning when the explosion-proof sheet 10 is installed.
In one example, the outer shape of the rupture disk body 1 is formed in an oblong shape, the protrusion 4 is formed in a ring shape and in an oblong shape, and the protrusion 4 is provided inside the rupture disk body 1.
In another example, the outer shape of the rupture disk body 1 is formed in a circular shape, the protrusion 4 is formed in a ring shape and in a circular shape, and the protrusion 4 is provided inside the rupture disk body 1.
Alternatively, the explosion-proof score 2 is spaced apart from the protrusion 4, and one end of the connecting member 3 is located between the explosion-proof score 2 and the protrusion 4, for example, as shown in fig. 4, the explosion-proof score 2 and the protrusion 4 are spaced apart by a certain distance, and the size of the distance can be set according to the actual situation, and is not limited herein.
Further, by disposing the end of the first portion 31 of the connecting member 3 away from the second portion 32 between the protrusion 4 and the explosion-proof score 2, it is possible to facilitate not only the installation of the connecting member 3, but also the welding of the protrusion 4 after the explosion-proof plate 10 is installed on the cover plate 100.
In one example, the end of the first portion 31 of the connecting member 3, which is far away from the second portion 32, is disposed on the first region 11 and is located on the side of the protrusion 4, which is far away from the explosion-proof notch 2, so that when the explosion-proof sheet 10 is exploded after the protrusion 4 is welded to the cover plate 100, the first portion 31 is welded to the cover plate 100, so that the connecting member 3 does not separate from the explosion-proof sheet body 1, thereby improving the connecting strength of the connecting member 3.
The present invention further provides a cover plate 100 having the above-mentioned explosion-proof sheet 10.
The cover plate 100 according to the second aspect of the present invention includes: a top cover 20 and a rupture disk 10.
Specifically, as shown in fig. 2, an explosion-proof hole 201 is formed in the top cover 20, an orthographic projection of the explosion-proof hole 201 is located inside an orthographic projection of the explosion-proof sheet 10, and after the explosion-proof sheet 10 is matched with the explosion-proof hole 201, an outer peripheral wall of the protrusion 4 of the explosion-proof sheet 10 is abutted against an inner peripheral wall of the explosion-proof hole 201 and then welded, that is, a horizontal projection area of the explosion-proof hole 201 is smaller than that of the explosion-proof sheet 10, so that when the explosion-proof sheet 10 is matched with the explosion-proof hole 201, at least a partial area of the explosion-proof sheet 10 is located outside the explosion-proof hole 201.
Through the peripheral wall butt with the internal perisporium of the arch 4 of explosion-proof piece 10 and explosion-proof hole 201, can make explosion-proof piece 10 can be connected with apron 100 welding more conveniently through arch 4. In addition, the matching process of the explosion-proof sheet 10 is completed after the protrusion 4 is matched in the explosion-proof hole 201, so that the protrusion 4 can play a positioning role, and the matching efficiency is improved.
In addition, the outer shape of the protrusion 4 is substantially the same as the outer shape of the explosion-proof hole 201, so that the protrusion 4 can abut against the inner peripheral wall of the explosion-proof hole 201 after being fitted in the explosion-proof hole 201, and the explosion-proof hole 201 can be sealed after the protrusion 4 is welded.
From this, according to the utility model discloses apron 100 is through locating explosion-proof piece 10 on apron 100 to make welding behind the periphery wall of the arch 4 of explosion-proof piece 10 and the internal perisporium butt of explosion-proof hole 201, can improve the efficiency that explosion-proof piece 10 cooperates the installation, also can make to seal explosion-proof hole 201 behind the welding arch 4 simultaneously.
The present invention also provides a prismatic battery 1000 having the cover plate 100 of the above embodiment.
The square battery 1000 according to the embodiment of the third aspect of the present invention includes: a housing 200 and a cover plate 100.
Specifically, as shown in fig. 1, a mounting hole is formed in the case 200, and the cap plate 100 is fitted over the mounting hole to seal the case 200, whereby, after the cap plate 100 is fitted over the mounting hole, the cap plate 100 can seal the case 200, so that the battery 1000 can be used normally, when the pressure inside the case 200 is high, a burst can be issued at the explosion-proof notch 2, and the first region 11 and the second region 12 are connected by the connector 3 at the burst time, so that the connection strength is improved, whereby the second region 12 can be prevented from flying out, and the safety of the square battery 1000 can be improved.
According to the utility model discloses square battery 1000 is through locating apron 100 on casing 200 for when square battery 1000 casing 200 interior pressure is higher, can blast through the explosion-proof piece 10 on the apron 100, and explosion-proof piece 10 can not break away from apron 100 when blasting, thereby can improve battery 1000 security, also can prevent the explosion-proof piece 10 damage spare part or staff on every side of departure simultaneously.
Other configurations and operations of the prismatic battery 1000 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "some embodiments," "optionally," "further," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An explosion-proof sheet for a prismatic battery, comprising:
the explosion-proof sheet comprises an explosion-proof sheet body, wherein an explosion-proof notch with an opening is arranged on the explosion-proof sheet body, the explosion-proof notch divides the explosion-proof sheet body into a first area and a second area, the second area is positioned in the first area, and the opening is positioned between the first area and the second area;
the connecting piece is arranged at the opening, and the first area is connected with the second area through the connecting piece.
2. The explosion-proof sheet for a prismatic battery as claimed in claim 1, wherein the connecting member comprises: a first portion connecting the first region and a second portion connecting the second region.
3. The explosion-proof sheet for a prismatic battery as claimed in claim 2, wherein the connecting member further comprises: a third portion disposed between the first portion and the second portion, the third portion being located at the open mouth, a length of the third portion being no greater than a length of the open mouth.
4. The explosion proof sheet for a prismatic battery as claimed in claim 3, wherein the length of the third portion is equal to the length of the first portion and is smaller than the length of the second portion.
5. The explosion proof sheet for a prismatic battery as claimed in claim 3, wherein the length of the first portion is not more than the length of the open port, and the length of the second portion is more than the length of the open port.
6. The explosion proof sheet for the square battery as claimed in claim 3, wherein the length of the first portion and the length of the second portion are equal and are both greater than the length of the open port.
7. The explosion-proof sheet for the prismatic battery as claimed in claim 1, further comprising: the bulge is arranged at the outer edge of the first area, and the shape of the explosion-proof sheet body is substantially similar to that of the bulge.
8. The explosion proof sheet for the square battery as claimed in claim 7, wherein the explosion proof score is provided spaced apart from the protrusion, and one end of the connecting member is located between the explosion proof score and the protrusion.
9. A cover plate, comprising:
a top cover on which an explosion-proof hole is formed;
the explosion-proof piece is according to any one of claims 1-8, the orthographic projection of the explosion-proof hole is located inside the orthographic projection of the explosion-proof piece, and after the explosion-proof piece is matched with the explosion-proof hole, the raised outer peripheral wall of the explosion-proof piece is connected with the inner peripheral wall of the explosion-proof hole in an abutting mode and then welded.
10. A prismatic battery, comprising:
a housing having a mounting opening formed therein;
a cover plate according to claim 9 fitted over the mounting opening to seal the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022427304.XU CN213184502U (en) | 2020-10-27 | 2020-10-27 | Explosion-proof sheet for square battery, cover plate with explosion-proof sheet and square battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022427304.XU CN213184502U (en) | 2020-10-27 | 2020-10-27 | Explosion-proof sheet for square battery, cover plate with explosion-proof sheet and square battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213184502U true CN213184502U (en) | 2021-05-11 |
Family
ID=75780325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022427304.XU Expired - Fee Related CN213184502U (en) | 2020-10-27 | 2020-10-27 | Explosion-proof sheet for square battery, cover plate with explosion-proof sheet and square battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213184502U (en) |
-
2020
- 2020-10-27 CN CN202022427304.XU patent/CN213184502U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210511 Termination date: 20211027 |