CN216671781U - Explosion-proof valve protection component, explosion-proof valve component and battery - Google Patents
Explosion-proof valve protection component, explosion-proof valve component and battery Download PDFInfo
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- CN216671781U CN216671781U CN202122909161.0U CN202122909161U CN216671781U CN 216671781 U CN216671781 U CN 216671781U CN 202122909161 U CN202122909161 U CN 202122909161U CN 216671781 U CN216671781 U CN 216671781U
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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 provides an explosion-proof valve protection component, an explosion-proof valve component and a battery, wherein the explosion-proof valve protection component comprises a protection ring and a protection plate, the protection ring is arranged on a shell of the battery, which surrounds the outer side of a battery core, and is positioned on the outer side of an explosion-proof valve which is of a sheet structure and is arranged on the shell; the protection plate is arranged on the outer side of the protection ring to shield the explosion-proof valve; the thickness of the protection ring is selectively set to adjust the distance between the protection sheet and the explosion-proof valve, and the thickness direction of the protection ring is the same as the distribution direction of the protection sheet and the explosion-proof valve. Improve the protecting effect to explosion-proof valve through the explosion-proof valve protection part who uses this application, solved the relatively poor problem of protecting effect of protection film to explosion-proof valve among the prior art.
Description
Technical Field
The utility model relates to the technical field of explosion prevention of batteries, in particular to an explosion-proof valve protection component, an explosion-proof valve component and a battery.
Background
Lithium ion batteries are efficient energy storage devices, and particularly in the field of electric automobiles, power batteries are increasingly demanded.
When the battery is short-circuited or is overcharged or overdischarged, and the like, a battery core of the battery can generate a large amount of gas; in order to ensure the safety of the power battery, an explosion-proof valve is generally arranged on a top cover part of the power battery, so that when a battery core generates a large amount of gas, the explosion-proof valve can be flushed by the large amount of gas to achieve the purpose of pressure relief.
Since the explosion-proof valve is fragile, in order to prevent sharp objects from piercing through the explosion-proof valve and prevent foreign objects such as foreign objects, dust, and electrolyte from falling on the explosion-proof valve, as shown in fig. 1, a protective film 1 is usually disposed outside the explosion-proof valve, and the protective film 1 is fixedly disposed on a cover plate 2 to protect the explosion-proof valve.
The protection film 1 in the prior art is mostly of a flat structure, and with the continuous thinning of the thickness of the cover plate of the battery cell, the distance between the protection film and the explosion-proof valve which are oppositely arranged becomes smaller, so that the protection effect of the protection film on the explosion-proof valve is weakened; the protective film may be squeezed during production and transportation, and the protective effect may be reduced due to the close distance between the protective film and the explosion-proof valve, which may cause the explosion-proof valve to be depressed.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an explosion-proof valve protection component, an explosion-proof valve component and a battery, and aims to solve the problem that a protection film in the prior art has poor protection effect on an explosion-proof valve.
In order to achieve the above object, according to one aspect of the present invention, there is provided an explosion-proof valve protecting member including: the protection ring is arranged on a shell of the battery, which surrounds the outer side of the battery core, and is positioned on the outer side of the explosion-proof valve which is arranged on the shell and has a sheet structure; the protection plate is arranged on the outer side of the protection ring to shield the explosion-proof valve; wherein, the thickness of guard circle is optional to adjust the interval between protection sheet and the explosion-proof valve, and the thickness direction of guard circle is the same with the distribution direction of protection sheet and explosion-proof valve.
Furthermore, the shell is provided with an installation opening for installing the explosion-proof valve, the protection ring is arranged outside the installation opening on the shell, the projection of the installation opening on a preset projection plane is positioned in the projection of the peripheral wall of the protection ring on the preset projection plane, and the preset projection plane is vertical to the central axis of the protection ring; or the protective ring is arranged in the mounting opening, the peripheral wall of the protective ring is in contact with the inner wall of the mounting opening, and the thickness of the protective ring is greater than that of the shell at the mounting opening.
Further, when the guard ring is arranged outside the mounting opening on the housing, the thickness of the guard ring ranges from 0.05mm to 2 mm.
Further, the thickness of the protective sheet ranges from 0.05mm to 2 mm; and/or the protective ring is made of resin material or organic polymer material; and/or the protective sheet is made of resin material or organic polymer material.
Further, the resin material is a PET material; or the resin material is a PE material; or the resin material is a PP material; or the organic polymer material is a PI material.
Further, when the protective ring is arranged outside the mounting opening on the shell, a ventilation notch is arranged on the protective ring, so that the protective ring is provided with two opening ends along the circumferential direction of the protective ring, and air flow is allowed to pass between the two opening ends of the protective ring; and/or the protective ring is provided with a vent hole.
Further, when the protective ring is arranged in the mounting opening, the protective ring comprises a first ring section and a second ring section along the thickness direction of the protective ring, the first ring section is positioned in the mounting opening, and the second ring section is positioned on the outer side of the mounting opening; the second ring section is provided with a vent hole.
Furthermore, the protective sheet is provided with air holes which are strip-shaped holes, and the extension direction of the strip-shaped holes is parallel to the plate surface of the protective sheet; or the section of the air hole perpendicular to the thickness direction of the protection sheet is any one of a circle, an ellipse and a polygon.
According to another aspect of the present invention, there is provided an explosion-proof valve assembly comprising an explosion-proof valve in a sheet-like configuration and an explosion-proof valve protection member as described above.
According to a further aspect of the utility model, a battery is provided, which comprises a housing enclosing the outside of a cell and the above-mentioned explosion-proof valve assembly.
By applying the technical scheme of the utility model, the explosion-proof valve protection component comprises a protection ring and a protection plate, wherein the protection ring is arranged on a shell of the battery, which surrounds the outer side of the battery core, and is positioned on the outer side of the explosion-proof valve which is in a sheet structure and is arranged on the shell; the protection plate is arranged on the outer side of the protection ring to shield the explosion-proof valve, namely the protection plate and the explosion-proof valve are respectively arranged on two sides of the protection ring along the thickness direction of the protection plate; wherein, the thickness of guard circle is optional to adjust the interval between protection sheet and the explosion-proof valve, and the thickness direction of guard circle is the same with the distribution direction of protection sheet and explosion-proof valve.
In the concrete implementation process, through the guard circle of selecting different thickness in order to adjust the interval between screening glass and the explosion-proof valve, because the explosion-proof valve is installed the erection opening part on the shell usually, so when the wall thickness of erection opening part shell is less, can set up the guard circle and increase the interval between screening glass and the explosion-proof valve, and then guarantee the protecting effect of screening glass to the explosion-proof valve, in order when external force extrudees the screening glass, reduce or avoid causing the influence to the explosion-proof valve, the relatively poor problem of protecting effect of the protection film to the explosion-proof valve among the prior art has been solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments 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 view showing a structure in which a protective film is provided on a cover plate in the prior art;
FIG. 2 is a schematic view showing the cooperative arrangement of the explosion proof valve protection member and the explosion proof valve according to the present invention;
FIG. 3 is a schematic view showing a structure of an explosion-proof valve protecting member according to the present invention in which a vent notch is not provided on a protecting ring;
FIG. 4 is a schematic view showing a vent notch formed in a protection ring of an explosion-proof valve protection member according to the present invention;
fig. 5 is a schematic view showing the construction of a protective sheet of the explosion-proof valve protective member according to the present invention;
FIG. 6 shows a longitudinal cross-sectional view of the cooperating structure of the protective bezel and protective sheet of FIG. 3;
fig. 7 shows a longitudinal sectional view of the cooperating structure of the protective ring and the protective sheet of fig. 4.
Wherein the figures include the following reference numerals:
1. a protective film; 2. a cover plate;
10. a guard ring; 11. a vent gap; 12. annular ring; 20. a protective sheet; 21. air holes are formed; 30. an explosion-proof valve; 40. a cover plate; 41. and (7) installing an opening.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The utility model provides an explosion-proof valve protection component, please refer to fig. 2 to fig. 7, the explosion-proof valve protection component comprises a protection ring 10 and a protection plate 20, the protection ring 10 is used for being arranged on a shell of a battery which is arranged on the outer side of a battery cell and is positioned on the outer side of an explosion-proof valve 30 which is arranged on the shell and is of a sheet structure, namely the battery comprises the battery cell, the shell and the explosion-proof valve 30, the shell is arranged on the outer side of the battery cell, the explosion-proof valve 30 is of the sheet structure, the explosion-proof valve 30 is arranged on the shell, and the protection ring 10 is used for being arranged on the shell and is positioned on the outer side of the explosion-proof valve 30; the protective sheet 20 is arranged on the outer side of the protective ring 10 to shield the explosion-proof valve 30, namely, the protective sheet 20 and the explosion-proof valve 30 are respectively arranged on two sides of the protective ring 10 along the thickness direction of the protective ring 10; wherein, the thickness of the protective ring 10 is selectively set to adjust the distance between the protective sheet 20 and the explosion-proof valve 30, and the thickness direction of the protective ring 10 is the same as the distribution direction of the protective sheet 20 and the explosion-proof valve 30.
In the concrete implementation process, through the guard circle 10 of selecting different thickness in order to adjust the interval between protection sheet 20 and the explosion-proof valve 30, because explosion-proof valve 30 installs the installation opening 41 department on the shell usually, so when the wall thickness of installation opening 41 department shell is less, can set up guard circle 10 and increase the interval between protection sheet 20 and the explosion-proof valve 30, and then guarantee protection sheet 20 to explosion-proof valve 30's protecting effect, in order when external force extrudes protection sheet 20, reduce or avoid causing the influence to explosion-proof valve 30, the problem of the protection film among the prior art to the protection effect of explosion-proof valve is relatively poor is solved.
The thickness direction of the protective ring 10 is the same as the extending direction of the central axis thereof, and the extending direction of the central axis of the protective ring 10 is the same as the direction of the housing from inside to outside at the mounting opening 41; the housing is provided with a mounting opening 41 for mounting the explosion-proof valve 30.
It should be noted that, when the battery core is overflowed, the protection ring 10 may also form a blocking effect on the electrolyte by the protection ring 10, so as to ensure that the electrolyte does not flow into a space surrounded by the protection ring 10, the protection sheet 20, and the explosion-proof valve 30.
Specifically, the plate surface of the protective sheet 20 is parallel to the plate surface of the explosion-proof valve 30, and both the plate surface of the protective sheet 20 and the plate surface of the explosion-proof valve 30 are perpendicular to the central axis of the protective ring 10.
Specifically, the housing includes a cover plate 40, and the explosion-proof valve protection member and the explosion-proof valve 30 are generally mounted on the cover plate 40, i.e., the mounting opening 41 is provided on the cover plate 40.
Specifically, the outer peripheral side wall of the protect sheet 20 is flush with the outer peripheral wall of the protect ring 10.
In this embodiment, a first arrangement of the guard ring 10 is as follows: the protective ring 10 is disposed outside the mounting opening 41 on the housing, and a projection of the mounting opening 41 on a predetermined projection plane, which is perpendicular to the central axis of the protective ring 10, is located within a projection of the outer peripheral wall of the protective ring 10 on the predetermined projection plane.
Since the projection of the mounting opening 41 on the predetermined projection plane is located within the projection of the outer peripheral wall of the guard ring 10 on the predetermined projection plane, the annular hole 12 of the guard ring 10 necessarily communicates with the mounting opening 41. Specifically, the annular hole 12 of the guard ring 10 is in abutting communication with the mounting opening 41.
Optionally, the wall of the annular ring 12 of the protective ring 10 is flush with the inner wall of the mounting opening 41.
Specifically, the thickness of the guard ring 10 ranges from 0.05mm to 2mm, and the thickness of the guard ring 10 is H shown in fig. 6 and 71。
Specifically, as shown in fig. 4, a ventilation notch 11 is provided on the protection ring 10, so that the protection ring 10 has two open ends along the circumferential direction thereof, the two open ends of the protection ring 10 are used for allowing an air flow to pass through, that is, the ventilation notch 11 is formed between the two open ends of the protection ring 10, and the ventilation notch 11 is provided so that the air pressure in the space enclosed by the protection ring 10, the protection sheet 20 and the explosion-proof valve 30 is equal to the external air pressure.
Specifically, the protection ring 10 is provided with a vent hole extending from the inner wall of the protection ring 10 to the outer peripheral wall of the protection ring 10, and the vent hole is provided to equalize the air pressure in the space surrounded by the protection ring 10, the protection sheet 20 and the explosion-proof valve 30 with the external air pressure.
In this embodiment, a second arrangement of the guard ring 10 is as follows: the protection ring 10 is arranged in the installation opening 41, the peripheral wall of the protection ring 10 is in contact with the inner wall of the installation opening 41, the thickness of the protection ring 10 is larger than the wall thickness of the shell at the installation opening 41, namely, the protection ring 10 extends out of the installation opening 41, and part of the ring section of the protection ring 10 is positioned outside the installation opening 41 along the thickness direction of the protection ring 10, so that the purpose of increasing the distance between the protection plate 20 and the explosion-proof valve 30 is achieved.
Specifically, in the thickness direction of the guard ring 10, the guard ring 10 includes a first ring section and a second ring section, the first ring section is located in the installation opening 41, that is, the thickness of the first ring section is equal to the wall thickness of the housing at the installation opening 41, and the second ring section is located outside the installation opening 41.
Specifically, the second ring section is provided with a vent hole, the vent hole extends from the inner wall of the second ring section to the outer peripheral wall of the second ring section, and the air pressure in the space enclosed by the protective ring 10, the protective sheet 20 and the explosion-proof valve 30 is equal to the external air pressure by the vent hole.
Specifically, the mounting opening 41 is provided on the cover plate 40, and the thickness of the protective ring 10 is greater than that of the cover plate 40.
In the present embodiment, the thickness of the protective sheet 20 ranges from 0.05mm to 2mm, and the thickness of the protective sheet 20 is H shown in fig. 6 and 72。
In this embodiment, the protective ring 10 is made of a resin material or an organic polymer material; and/or the protective sheet 20 is made of a resin material or an organic polymer material; the resin material or the organic polymer material can make the protective ring 10 and/or the protective sheet 20 have high tensile strength and high flexibility, and can meet the requirements of high temperature resistance and corrosion resistance.
Specifically, the resin material is a thermoplastic resin material.
Alternatively, the material of the protective ring 10 and the protective sheet 20 is the same.
Specifically, the resin material is a PET material (having a name of Polyethylene terephthalate), commonly known as polyester resin; or the resin material is a PE material (Polyethylene, english name), that is, a Polyethylene material; or the resin material is a PP material, namely a polypropylene material; or the organic polymer material is a PI material, namely a polyimide material.
Specifically, the protective ring 10 and the protective sheet 20 may be formed by a process such as stamping or injection molding.
In the present embodiment, as shown in fig. 5, the protection sheet 20 is provided with air vents 21, the air vents 21 extend to two plate surfaces of the protection sheet 20, and the air pressure in the space enclosed by the protection ring 10, the protection sheet 20 and the explosion-proof valve 30 is equal to the external air pressure by providing the air vents 21.
Specifically, as shown in fig. 5, the air holes 21 are strip-shaped holes, and the extending direction of the strip-shaped holes is parallel to the plate surface of the protective sheet 20; or the shape of the cross section of the vent hole 21 perpendicular to the thickness direction of the protective sheet 20 may be any one of circular, oval, and polygonal.
Specifically, the number of the vent holes 21 is plural, and the plurality of vent holes 21 are arranged at intervals.
The present invention also provides an explosion-proof valve assembly including an explosion-proof valve 30 having a sheet structure and the above-mentioned explosion-proof valve protecting member.
The utility model also provides a battery, which comprises a shell arranged outside the battery core and the explosion-proof valve component.
Specifically, the explosion-proof valve 30 is normally mounted at a mounting opening 41 on the housing; the explosion-proof valve 30 is disposed close to the inner wall of the housing in the wall thickness direction of the housing to further increase the distance between the explosion-proof valve 30 and the protect sheet 20.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
in the explosion-proof valve protection component of the utility model, the explosion-proof valve protection component comprises a protection ring 10 and a protection sheet 20, wherein the protection ring 10 is used for being arranged on a shell of a battery, which is arranged on the outer side of a battery core in a surrounding manner, and is positioned on the outer side of an explosion-proof valve 30 which is in a sheet structure and is arranged on the shell; the protective sheet 20 is arranged on the outer side of the protective ring 10 to shield the explosion-proof valve 30, namely, the protective sheet 20 and the explosion-proof valve 30 are respectively arranged on two sides of the protective ring 10 along the thickness direction of the protective sheet 20; wherein, the thickness of the protective ring 10 is selectively set to adjust the distance between the protective sheet 20 and the explosion-proof valve 30, and the thickness direction of the protective ring 10 is the same as the distribution direction of the protective sheet 20 and the explosion-proof valve 30.
In the concrete implementation process, through the guard circle 10 of selecting different thickness in order to adjust the interval between protection sheet 20 and the explosion-proof valve 30, because explosion-proof valve 30 installs the installation opening 41 department on the shell usually, so when the wall thickness of installation opening 41 department shell is less, can set up guard circle 10 and increase the interval between protection sheet 20 and the explosion-proof valve 30, and then guarantee protection sheet 20 to explosion-proof valve 30's protecting effect, in order when external force extrudes protection sheet 20, reduce or avoid causing the influence to explosion-proof valve 30, the problem of the protection film among the prior art to the protection effect of explosion-proof valve is relatively poor is solved.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An explosion proof valve protection member comprising:
the protection ring (10) is arranged on a shell of the battery, which surrounds the outer side of the battery core, and the protection ring (10) is positioned on the outer side of an explosion-proof valve (30) which is arranged on the shell and has a sheet structure;
the protection plate (20) is arranged on the outer side of the protection ring (10) to shield the explosion-proof valve (30);
wherein the thickness of the protection ring (10) can be selectively set to adjust the distance between the protection sheet (20) and the explosion-proof valve (30), and the thickness direction of the protection ring (10) is the same as the distribution direction of the protection sheet (20) and the explosion-proof valve (30).
2. Explosion-proof valve protection component according to claim 1, characterized in that the housing is provided with a mounting opening (41) for mounting the explosion-proof valve (30),
the protective ring (10) is arranged outside a mounting opening (41) on the shell, and the projection of the mounting opening (41) on a preset projection plane is positioned in the projection of the peripheral wall of the protective ring (10) on the preset projection plane, and the preset projection plane is vertical to the central axis of the protective ring (10); or alternatively
Guard circle (10) set up in installation opening (41), the periphery wall of guard circle (10) with the inner wall contact of installation opening (41), the thickness of guard circle (10) is greater than installation opening (41) department the wall thickness of shell.
3. An explosion-proof valve protection member according to claim 2, wherein when the protection ring (10) is disposed outside the mounting opening (41) on the housing, the thickness of the protection ring (10) has a magnitude in the range of 0.05mm to 2 mm.
4. The explosion proof valve protection member of claim 1,
the thickness of the protection sheet (20) ranges from 0.05mm to 2 mm; and/or
The protective ring (10) is made of resin material or organic polymer material; and/or
The protective sheet (20) is made of resin material or organic polymer material.
5. The explosion-proof valve protection member according to claim 4,
the resin material is a PET material; or
The resin material is a PE material; or
The resin material is a PP material; or
The organic polymer material is a PI material.
6. Explosion-proof valve protection component according to claim 2, characterized in that, when the protective ring (10) is arranged outside the mounting opening (41) on the housing,
a ventilation notch (11) is formed in the protective ring (10), so that the protective ring (10) is provided with two open ends along the circumferential direction of the protective ring, and air flow is allowed to pass between the two open ends of the protective ring (10); and/or
The protective ring (10) is provided with a vent hole.
7. The explosion-proof valve protection member as recited in claim 2, characterized in that when the protection ring (10) is disposed in the mounting opening (41), the protection ring (10) includes a first ring section located in the mounting opening (41) and a second ring section located outside the mounting opening (41) in a thickness direction of the protection ring (10); and the second ring section is provided with a vent hole.
8. The explosion-proof valve protection member according to claim 1, wherein said protect sheet (20) is provided with an air vent (21),
the air holes (21) are strip-shaped holes, and the extension direction of the strip-shaped holes is parallel to the plate surface of the protection plate (20); or
The section of the air hole (21) perpendicular to the thickness direction of the protection sheet (20) is any one of a circle, an ellipse and a polygon.
9. An explosion-proof valve assembly, characterized by comprising an explosion-proof valve (30) in a sheet-like structure and an explosion-proof valve protection member according to any one of claims 1 to 8.
10. A battery comprising a housing surrounding an exterior of a cell and the explosion-proof valve assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122909161.0U CN216671781U (en) | 2021-11-24 | 2021-11-24 | Explosion-proof valve protection component, explosion-proof valve component and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122909161.0U CN216671781U (en) | 2021-11-24 | 2021-11-24 | Explosion-proof valve protection component, explosion-proof valve component and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216671781U true CN216671781U (en) | 2022-06-03 |
Family
ID=81790991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122909161.0U Active CN216671781U (en) | 2021-11-24 | 2021-11-24 | Explosion-proof valve protection component, explosion-proof valve component and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216671781U (en) |
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2021
- 2021-11-24 CN CN202122909161.0U patent/CN216671781U/en active Active
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