Explosion-proof valve, battery pack and vehicle
By designing the main and auxiliary marks on the explosion-proof membrane of the explosion-proof valve, we ensure that it breaks evenly during pressure relief, solving the problem of insufficient pressure relief of the explosion-proof valve, achieving full opening and uniform stress distribution, and increasing the opening pressure consistency and heat resistance of explosion-proof film.
Patent Information
- Application Number
- CN202323513141.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2033-12-21
AI Technical Summary
The existing explosion-proof valve cannot be fully opened during pressure relief, resulting in insufficient pressure relief or failure.
Design an explosion-proof valve, including an explosion-proof membrane and a marking part arranged on the explosion-proof membrane, the marking part consists of a main mark and at least one auxiliary mark, the main mark is closed loop, and the auxiliary mark is formed around the main mark. The main mark intersects in the area, and the depth of the main mark and the auxiliary mark is the same. The auxiliary mark helps the explosion-proof membrane to fully break and achieve full opening of the explosion-proof valve.
By setting auxiliary marks, we ensure that the explosion-proof film evenly distributes stress at the main marks and auxiliary marks, promotes complete rupture of the marks, ensures sufficient pressure relief, and reduces process requirements, improves the consistency of opening pressure, and enhances explosion-proof The film has the ability to resist welding thermal deformation.
Smart Images
Figure CN222355353U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of power batteries, and in particular, to an explosion-proof valve, a battery pack and a vehicle. Background Art
[0002] The explosion-proof valve is a device that prevents battery safety accidents. When a battery fails, a large amount of flammable gas may be generated inside the battery, and the battery will explode when the pressure reaches a certain level. Therefore, when the pressure inside the battery reaches the warning value, the explosion-proof valve opens to balance the pressure inside and outside the battery to avoid safety accidents.
[0003] In the related art, the explosion-proof valve includes an explosion-proof membrane and a notch on the explosion-proof membrane. The outline of the notch is generally the same as the shape of the explosion-proof membrane, so as to have a sufficient pressure relief area when the explosion-proof valve is opened. However, at present, when the explosion-proof valve is releasing pressure, the notch cannot be fully ruptured, which will cause the explosion-proof valve to fail to fully open, resulting in insufficient pressure relief or even failure of the explosion-proof valve. Utility Model Content
[0004] The purpose of the present disclosure is to provide an explosion-proof valve, which can solve the technical problem that the explosion-proof valve cannot be fully opened when the valve releases pressure.
[0005] In order to achieve the above-mentioned purpose, the present disclosure provides an explosion-proof valve, including an explosion-proof membrane and a scoring portion arranged on the explosion-proof membrane, the scoring portion including a main scoring and at least one auxiliary scoring, the main scoring is arranged in a closed loop, the auxiliary scoring is arranged in an area formed around the main scoring, and the auxiliary scoring also intersects with the main scoring, and the depth of the main scoring is the same as the depth of the auxiliary scoring.
[0006] Optionally, the main score is constructed in an annular shape and has two first scores spaced along a first direction and two second scores spaced along a second direction, the first direction and the second direction are perpendicular to each other, the two first scores and the two second scores together form the main score, the first score is constructed as a straight score, and the second score is constructed as an arc-shaped score; the auxiliary score extends along the first direction, and the two ends of the auxiliary score in the first direction respectively intersect with the main score.
[0007] Optionally, the notch portion includes at least two auxiliary notches, the at least two auxiliary notches include two first auxiliary notches, and the two first auxiliary notches are spaced apart in the second direction.
[0008] Optionally, the first dividing mark has a midpoint, the midpoints of two first dividing marks are connected to form a midline, and the two first auxiliary notches are axially symmetrically arranged about the midline.
[0009] Optionally, the second dividing mark is configured as a semicircular arc mark, the radius of the second dividing mark is r, the length of the first dividing mark is b, and the distance between the two first auxiliary notches is a<(b+2r).
[0010] Optionally, the distance between the two first auxiliary notches is a≤b,
[0011] The scoring portion includes at least three auxiliary scorings, and the at least three auxiliary scorings include two first auxiliary scorings and one second auxiliary scoring, and the second auxiliary scoring is arranged between the two first auxiliary scorings.
[0012] Optionally, the explosion-proof valve comprises a substrate, and the explosion-proof membrane is arranged on the substrate, wherein two ends of the first auxiliary notch in the first direction also extend out of the main notch and are connected to the substrate.
[0013] Optionally, the second auxiliary notch is configured as a straight notch.
[0014] Optionally, the second auxiliary score is perpendicular to the first score.
[0015] Optionally, a distance between two of the first auxiliary notches is a>b and a<(b+2r), and both ends of the first auxiliary notches in the first direction are arranged on the main notches.
[0016] Optionally, the first auxiliary notch is configured as an arc-shaped notch, and at least one of the two first auxiliary notches protrudes in the second direction toward a side away from the other first auxiliary notch.
[0017] Optionally, the first auxiliary score includes a third score and a fourth score arranged at an angle, the third score and the fourth score form a sharp angle, and at least one of the sharp angles of the two first auxiliary scores protrudes in the second direction toward a side close to the other sharp angle.
[0018] Optionally, the first auxiliary notch is configured as a straight notch.
[0019] Optionally, the first auxiliary notch is perpendicular to the first dividing notch.
[0020] Optionally, the first auxiliary notch is configured as an arc-shaped notch, and at least one of the two first auxiliary notches protrudes in the second direction toward a side close to the other first auxiliary notch.
[0021] Optionally, the explosion-proof valve includes a base, the explosion-proof membrane includes a first sub-membrane and a concave second sub-membrane, the first sub-membrane is connected to the base, and the main notch is arranged at the junction of the first sub-membrane and the second sub-membrane.
[0022] According to a second aspect of the present disclosure, a battery pack is provided, comprising the explosion-proof valve as described above.
[0023] According to a third aspect of the present disclosure, a vehicle is provided, comprising the battery pack as described above.
[0024] Through the above technical solution, in the explosion-proof valve provided by the present disclosure, when the internal pressure of the battery pack exceeds a certain value, the explosion-proof membrane can rupture at the main notch. In addition, the explosion-proof membrane can also rupture at the auxiliary notch. Therefore, by setting at least one auxiliary notch, the explosion-proof membrane can be fully ruptured to achieve full opening of the explosion-proof valve, solving the technical problem that the explosion-proof valve cannot be fully opened when the pressure is released. In addition, since the depth of the main notch is the same as the depth of the auxiliary notch, the stress is evenly distributed on the closed shape composed of the auxiliary notch and part of the main notch, which helps to completely rupture the notch part and ensure sufficient pressure release; and the shape of the auxiliary notch can also be simply changed to change the size of the distributed stress on the notch part under the same pressure difference, so as to design explosion-proof valves with different opening pressures. The advantage of this design is that there is no need to process main notches and auxiliary notches of different depths on the explosion-proof valve of the same specification to balance the stress distribution. Therefore, the main notches and auxiliary notches of the same depth used in the present disclosure can reduce the process requirements and improve the consistency of the opening pressure. At the same time, this also means that when processing explosion-proof valves with the same opening pressure, the present disclosure can use a thicker explosion-proof membrane or a shallower notch portion, so that the explosion-proof membrane can withstand thermal deformation during welding and avoid damage to the explosion-proof membrane.
[0025] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0027] Figure 1 is a schematic diagram of the three-dimensional structure of an explosion-proof valve provided according to the first embodiment of the present disclosure;
[0028] Figure 2 yes Figure 1 Main schematic diagram of the middle explosion-proof valve;
[0029] Figure 3 is a schematic diagram of the main structure of an explosion-proof valve provided according to a second embodiment of the present disclosure;
[0030] Figure 4 is a schematic diagram of the main structure of an explosion-proof valve provided according to a third embodiment of the present disclosure;
[0031] Figure 5is a schematic diagram of the main structure of an explosion-proof valve provided according to a fourth embodiment of the present disclosure;
[0032] Figure 6 is a schematic diagram of the main structure of an explosion-proof valve provided according to a fifth embodiment of the present disclosure;
[0033] Figure 7 It is a schematic diagram of the main structure of an explosion-proof valve provided according to the sixth embodiment of the present disclosure.
[0034] Description of Reference Numerals
[0035] 1-explosion-proof membrane, 11-first sub-membrane, 12-second sub-membrane, 2-scoring portion, 21-main scoring, 211-first scoring, 212-second scoring, 22-auxiliary scoring, 221-first auxiliary scoring, 2211-third scoring, 2212-fourth scoring, 2213-pointer, 222-second auxiliary scoring, 3-substrate. DETAILED DESCRIPTION
[0036] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0037] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined based on the explosion-proof valve. Specifically, the direction from the outside to the explosion-proof valve is the inside, and the opposite direction is the outside. The terms "first" and "second" are used to distinguish one element from another, and do not have order or importance. In addition, when the following description refers to the drawings, the same reference numerals in different drawings represent the same or similar elements, and this disclosure will not repeat them.
[0038] According to an exemplary embodiment of the present disclosure, an explosion-proof valve is provided, referring to Figure 1 As shown in the figure, the explosion-proof valve includes an explosion-proof membrane 1 and a scoring portion 2 arranged on the explosion-proof membrane 1, the scoring portion 2 includes a main scoring 21 and at least one auxiliary scoring 22, the main scoring 21 is arranged in a closed loop, the auxiliary scoring 22 is arranged in an area formed around the main scoring 21, and the auxiliary scoring 22 also intersects with the main scoring 21, and the depth of the main scoring 21 is the same as the depth of the auxiliary scoring 22.
[0039] Through the above technical solution, in the explosion-proof valve provided by the present disclosure, when the internal pressure of the battery pack exceeds a certain value, the explosion-proof membrane 1 can rupture at the main notch 21. In addition, the explosion-proof membrane 1 can also rupture at the auxiliary notch 22. Therefore, by setting at least one auxiliary notch 22, it can help the explosion-proof membrane 1 to fully rupture, realize the full opening of the explosion-proof valve, and solve the technical problem that the explosion-proof valve cannot be fully opened when the pressure is released. In addition, since the depth of the main notch 21 and the depth of the auxiliary notch 22 are the same, the stress is evenly distributed on the closed shape composed of the auxiliary notch 22 and part of the main notch 21, which helps the complete rupture of the notch portion 2 and ensures sufficient pressure release; and the shape of the auxiliary notch 22 can be simply changed to change the size of the distributed stress on the notch portion 2 under the same pressure difference, so as to design explosion-proof valves with different opening pressures. The advantage of this design is that it is not necessary to process main notches 21 and auxiliary notches 22 of different depths on explosion-proof valves of the same specification to balance stress distribution. Therefore, the main notches 21 and auxiliary notches 22 of the same depth used in the present disclosure can reduce process requirements and improve the consistency of opening pressure. At the same time, this also means that when processing explosion-proof valves with the same opening pressure, the present disclosure can use a thicker explosion-proof membrane 1 or a shallower notch 2, so that the explosion-proof membrane 1 can withstand thermal deformation during welding and avoid the explosion-proof membrane 1 from being damaged.
[0040] It should be noted that the depth of the main score 21 and the depth of the auxiliary score 22 being the same can be understood as: the depth of the main score 21 is consistent at all locations, the depth of the auxiliary score 22 is consistent at all locations, and the depth of the main score 21 is consistent with the depth of the auxiliary score 22. In addition, the present disclosure does not limit the shape of the main score 21 and the shape of the auxiliary score 22, and the present disclosure can be adaptively designed as needed.
[0041] In the exemplary embodiment of the present disclosure, referring to Figures 1 to 6As shown in , the main score 21 can be constructed as an annular shape, and has two first scores 211 spaced along the first direction and two second scores 212 spaced along the second direction, the first direction and the second direction are perpendicular to each other, and the two first scores 211 and the two second scores 212 together surround the main score 21, that is, at this time, the main score 21 is constructed as an oblong, the first score 211 is constructed as a straight score, and the second score 212 is constructed as an arc score; the auxiliary score 22 extends along the first direction, and the two ends of the auxiliary score 22 in the first direction intersect with the main score 21 respectively. Here, designing the shape of the main score 21 as an oblong can be adapted to the oblong explosion-proof membrane 1, ensuring that the explosion-proof valve has sufficient pressure relief area. When the explosion-proof membrane 1 is under pressure, for the oblong main score 21, the stress is mainly distributed on the first score 211, while the stress on the second score 212 is relatively small, which may cause the main score 21 to fail to fully rupture. Therefore, the present disclosure designs the auxiliary score 22 to extend along the first direction, so that the stress can be evenly distributed on the first score 211 and the second score 212, which is conducive to the full rupture of the main score 21. Of course, in other embodiments, the main score 21 can also be constructed as a circle, in which case the auxiliary score 22 can also be constructed as a circle, so that the stress can also be evenly distributed on the main score 21, helping the main score 21 to fully rupture.
[0042] It should be noted that a straight mark can be understood as a straight-line notch, and an arc-shaped mark can be understood as an arc-shaped notch, which will not be elaborated in the following embodiments of the present disclosure.
[0043] In some embodiments of the present disclosure, reference Figures 1 to 6 As shown in , the scoring portion 2 may include at least two auxiliary scorings 22, and the at least two auxiliary scorings 22 include two first auxiliary scorings 221, and the two first auxiliary scorings 221 are spaced apart in the second direction. In this way, the stress is evenly distributed on the two second split scorings 212, so that the main scoring 21 can be further helped to fully break.
[0044] In some embodiments of the present disclosure, reference Figures 1 to 6 As shown in , the first dividing mark 211 may have a midpoint, the midpoints of the two first dividing marks 211 are connected to form a midline, and the two first auxiliary notches 221 may be arranged axially symmetrically about the midline. In this way, the stress can be evenly distributed on the two first auxiliary notches 221.
[0045] In some embodiments of the present disclosure, reference Figures 1 to 6As shown in , the second score 212 can be constructed as a semicircular arc score, and the radius of the second score 212 is r, the length of the first score 211 is b, and the distance between the two first auxiliary scores 221 is a<(b+2r). Here, since the two first auxiliary scores 221 are arranged at intervals, 0<a<(b+2r). Such an arrangement can arrange as many first auxiliary scores 221 as possible in the main score 21 to facilitate the full rupture of the score portion 2. Of course, in other embodiments, refer to Figure 7 As shown in , the second mark 212 can also be constructed as an arc mark, the corresponding endpoints of the two first marks 211 are connected to form a side line, and the maximum distance between the second mark 212 and the corresponding side line in the second direction is c. At this time, the distance between the two first auxiliary marks 221 is a<(b+2c).
[0046] It should be noted that the interval a between the two first auxiliary notches 221 can be understood as the interval between the two closest points on the two first auxiliary notches 221 in the second direction.
[0047] Optionally, refer to Figures 1 to 5 As shown in , the spacing between the two first auxiliary notches 221 is a≤b, the notched portion 2 includes at least three auxiliary notches 22, and the at least three auxiliary notches 22 include two first auxiliary notches 221 and one second auxiliary notch 222, and the second auxiliary notch 222 is arranged between the two first auxiliary notches 221. In this way, by adding the second auxiliary notch 222 between the two first auxiliary notches 221, the deformation of the explosion-proof membrane 1 can be assisted, and the stress concentration on the two first auxiliary notches 221 can be promoted. When the explosion-proof valve is opened, the explosion-proof membrane 1 breaks along the two first auxiliary notches 221 and the two first dividing marks 211, and an annular pressure relief gap can be exposed. On the basis of forming the pressure relief gap, the explosion-proof membrane 1 is more likely to crack along the two second dividing marks 212, further increasing the pressure relief port. Here, according to some embodiments, the two ends of the second auxiliary notch 222 in the first direction can be connected to the above-mentioned midpoint respectively, and the present disclosure is not limited to this.
[0048] Optionally, the smaller the spacing a between the two first auxiliary notches 221, the smaller the pressure that the explosion-proof membrane 1 can withstand, that is, the smaller the opening pressure of the explosion-proof valve. Therefore, by selecting the shape of the first auxiliary notches 221 and the size of a, explosion-proof valves with different opening pressure specifications can be processed. Compared with selecting explosion-proof membranes 1 of different thicknesses and selecting notches 2 of different depths, the explosion-proof valve disclosed in the present invention is less difficult to process, and the consistency of the opening pressure of explosion-proof valves of the same specification is more guaranteed.
[0049] Optionally, refer to Figures 1 to 5As shown in , the explosion-proof valve may include a base 3, and the explosion-proof membrane 1 is arranged on the base 3, wherein the first auxiliary notches 221 at both ends in the first direction also extend out of the main notches 21 and are connected to the base 3. Such an arrangement can reduce the rigidity of the explosion-proof membrane 1 outside the main notches 21, and assist the deformation of the explosion-proof membrane 1.
[0050] Optionally, refer to Figures 1 to 5 As shown in , the second auxiliary notch 222 can be configured as a straight notch, in which case the second auxiliary notch 222 can coincide with the above-mentioned midline, that is, be arranged perpendicular to the first dividing mark 211. Of course, the second auxiliary notch 222 can be configured as an arc notch or a notch of other shapes, which is not limited in the present disclosure.
[0051] Optionally, refer to Figure 6 As shown in , the distance between the two first auxiliary notches 221 is a>b and a<(b+2r), and the two ends of the first auxiliary notches 221 in the first direction are arranged on the main notches 21. In this way, the first auxiliary notches 221 will be closer to the corresponding second split notches 212, thereby reducing the rigidity of the explosion-proof membrane 1 at the second split notches 212 and increasing the stress concentrated at the second split notches 212. Here, the above-mentioned second auxiliary notches 222 may not be arranged between the two first auxiliary notches 221, and the present disclosure does not limit this.
[0052] Optionally, refer to Figure 6 As shown in , the first auxiliary score 221 can be constructed as an arc-shaped score, and at least one of the two first auxiliary score 221 can be convex in the second direction toward the side away from the other first auxiliary score 221. In this way, the stress concentration of the arc-shaped score and the straight score in the score portion 2 can be basically consistent, ensuring that the arc-shaped score and the straight score are opened under the same pressure conditions, and the score portion 2 is ruptured more fully. Here, according to some embodiments, reference Figure 6 As shown in , any one of the two first auxiliary notches 221 can protrude toward a side away from the other first auxiliary notch 221 in the second direction.
[0053] Optionally, refer to Figure 3 and Figure 4 As shown in , the first auxiliary score 221 includes a third score 2211 and a fourth score 2212 set at an angle, the third score 2211 and the fourth score 2212 surround a sharp corner 2213, and at least one of the sharp corners 2213 of the two first auxiliary scores 221 can protrude toward a side close to the other sharp corner 2213 in the second direction. In some embodiments, reference Figure 3 and Figure 4As shown in , any of the sharp corners 2213 of the two first auxiliary notches 221 can protrude toward the side close to the other sharp corner 2213 in the second direction. In this case, the distance between the two first auxiliary notches 221 is the distance between the two sharp corners 2213. According to some embodiments, reference Figure 3 As shown in , the sharp corner 2213 can be an angular corner. According to some other embodiments, referring to Figure 4 As shown in , the sharp corner 2213 may also be a rounded corner.
[0054] Optionally, refer to Figure 1 and Figure 2 As shown in , the first auxiliary notch 221 can be configured as a straight notch. In this case, the first auxiliary notch 221 can be perpendicular to the first dividing notch 211 .
[0055] Optionally, refer to Figure 5 As shown in , the first auxiliary notch 221 is configured as an arc-shaped notch, and at least one of the two first auxiliary notches 221 may protrude toward a side close to the other first auxiliary notch 221 in the second direction. Figure 5 As shown in , any one of the two first auxiliary notches 221 can protrude toward a side close to the other first auxiliary notch 221 in the second direction.
[0056] Several shapes of the first auxiliary notch 221 are introduced above, but the first auxiliary notch 221 of the present disclosure is not limited to the above embodiments. The present disclosure can also adaptively design the shape of the first auxiliary notch 221 according to the requirements of the opening pressure of the explosion-proof valve.
[0057] In the exemplary embodiment of the present disclosure, referring to Figure 1 As shown in , the explosion-proof valve includes a base 3, and the explosion-proof membrane 1 may include a first sub-membrane 11 and a concave second sub-membrane 12. The concave second sub-membrane 12 means that the second sub-membrane 12 is closer to the battery in the battery pack than the first sub-membrane 11. The first sub-membrane 11 is connected to the base 3, and the main score 21 can be set at the junction of the first sub-membrane 11 and the second sub-membrane 12. In this way, when the opening pressure is reached, the explosion-proof membrane 1 arches outward, and the deformation of the explosion-proof membrane 1 causes the stress to be concentrated at the main score 21, which acts together with the air pressure to promote the rupture of the explosion-proof membrane 1.
[0058] According to a second aspect of the present disclosure, a battery pack is provided, comprising the explosion-proof valve as described above. The battery pack has all the beneficial effects of the explosion-proof valve as described above, which will not be described in detail in the present disclosure.
[0059] According to a third aspect of the present disclosure, a vehicle is provided, comprising the battery pack as described above. The vehicle has all the beneficial effects of the battery pack as described above, which will not be described in detail in the present disclosure.
[0060] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0062] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. An explosion-proof valve, characterized in that: It includes an explosion-proof membrane and a scoring portion arranged on the explosion-proof membrane, the scoring portion includes a main scoring and at least one auxiliary scoring, the main scoring is arranged in a closed loop, the auxiliary scoring is arranged in an area formed around the main scoring, and the auxiliary scoring also intersects with the main scoring, and the depth of the main scoring is the same as the depth of the auxiliary scoring.
2. The explosion-proof valve according to claim 1, characterized in that: The main score is constructed in an annular shape and has two first scores spaced along a first direction and two second scores spaced along a second direction. The first direction and the second direction are perpendicular to each other. The two first scores and the two second scores together form the main score. The first score is constructed as a straight score and the second score is constructed as an arc-shaped score. The auxiliary score extends along the first direction, and the two ends of the auxiliary score in the first direction intersect with the main score respectively.
3. The explosion-proof valve according to claim 2, characterized in that: The notch portion includes at least two auxiliary notches, the at least two auxiliary notches include two first auxiliary notches, and the two first auxiliary notches are spaced apart in the second direction.
4. The explosion-proof valve according to claim 3, characterized in that: The first dividing mark has a midpoint, the midpoints of two first dividing marks are connected to form a midline, and the two first auxiliary notches are arranged axially symmetrically about the midline.
5. The explosion-proof valve according to claim 3 or 4, characterized in that: The second dividing mark is configured as a semicircular arc mark, and the radius of the second dividing mark is r, the length of the first dividing mark is b, and the distance between the two first auxiliary notches is a<.
6. The explosion-proof valve according to claim 5, characterized in that: The distance between the two first auxiliary notches is a≤b, The scoring portion includes at least three auxiliary scorings, and the at least three auxiliary scorings include two first auxiliary scorings and one second auxiliary scoring, and the second auxiliary scoring is arranged between the two first auxiliary scorings.
7. The explosion-proof valve according to claim 6, characterized in that: The explosion-proof valve comprises a base body, and the explosion-proof membrane is arranged on the base body, wherein two ends of the first auxiliary notch in the first direction also extend out of the main notch and are connected to the base body.
8. The explosion-proof valve according to claim 6, characterized in that: The second auxiliary notch is configured as a straight notch.
9. The explosion-proof valve according to claim 8, characterized in that: The second auxiliary score is perpendicular to the first score.
10. The explosion-proof valve according to claim 5, characterized in that: The distance between the two first auxiliary notches is a>b and a<, and both ends of the first auxiliary notches in the first direction are arranged on the main notches.
11. The explosion-proof valve according to claim 10, characterized in that: The first auxiliary notch is configured as an arc-shaped notch, and at least one of the two first auxiliary notches protrudes in the second direction toward a side away from the other first auxiliary notch.
12. The explosion-proof valve according to claim 3 or 4, characterized in that: The first auxiliary notch includes a third notch and a fourth notch set at an angle, the third notch and the fourth notch form a sharp angle, and at least one of the sharp angles of the two first auxiliary notches protrudes in the second direction toward a side close to the other sharp angle.
13. The explosion-proof valve according to claim 3 or 4, characterized in that: The first auxiliary notch is configured as a straight notch.
14. The explosion-proof valve according to claim 13, characterized in that: The first auxiliary notch is perpendicular to the first dividing notch.
15. The explosion-proof valve according to claim 3 or 4, characterized in that: The first auxiliary notch is configured as an arc-shaped notch, and at least one of the two first auxiliary notches protrudes toward a side close to the other first auxiliary notch in the second direction.
16. The explosion-proof valve according to claim 1, characterized in that: The explosion-proof valve comprises a base body, the explosion-proof membrane comprises a first sub-membrane and a concave second sub-membrane, the first sub-membrane is connected to the base body, and the main notch is arranged at the junction of the first sub-membrane and the second sub-membrane.
17. A battery pack, characterized in that: The explosion-proof valve comprises the explosion-proof valve as described in any one of claims 1-16.
18. A vehicle, characterized in that: A battery pack comprising the battery pack of claim 17.