Explosion-proof valve, battery pack and vehicle

Abstract

The invention discloses an anti-explosion valve, a battery pack and a vehicle, and belongs to the field of new energy automobiles. The anti-explosion valve comprises a fixing base, an anti-explosion valve body and a direction adjusting mechanism. The direction adjusting mechanism is rotationally connected into the bearing groove of the fixing base and detachably connected with the anti-explosion valve body, so that the anti-explosion valve body can rotate around the direction adjusting mechanism in any direction. The limitation of fixed direction installation of a traditional anti-explosion valve is broken through, so that the anti-explosion valve can flexibly adapt to the installation requirements of various battery pack structures, and the installation compatibility of the anti-explosion valve to different battery packs is improved. And moreover, manufacturers do not need to develop special anti-explosion valves for different battery packs, so that the production cost of the anti-explosion valves is greatly reduced. Besides, a first exhaust channel arranged in the direction adjusting mechanism is communicated with a first vent hole of the fixed seat, so that when the battery pack is subjected to thermal runaway, gas can sequentially pass through the first vent hole and the first exhaust channel to enter an inner cavity of the anti-explosion valve body and is smoothly exhausted to the outside.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and particularly relates to an explosion-proof valve, a battery pack, and a vehicle. Background Art

[0002] With the rapid development of the new energy vehicle industry, as the core power source of the whole vehicle, the safety of power batteries directly determines the reliability of the vehicle and the life and property safety of users. In the safety design of the battery pack, as a key component for balancing the internal and external air pressures and preventing thermal runaway, the explosion-proof valve automatically opens when the internal air pressure of the battery is too high, releases the excess gas, and prevents the battery case from cracking, thereby effectively avoiding thermal runaway accidents.

[0003] Currently, mainstream explosion-proof valves generally adopt a fixed-direction installation design (such as installing perpendicular to the surface of the battery case), and rely on a rigid structure to achieve the sealing and explosion-proof functions. However, due to differences in vehicle models, energy density requirements, and space layouts, power battery packs show highly diverse structural forms - for example, the lateral installation requirements of square modules, the top space limitations of cylindrical modules, or the curved surface encapsulation scenarios of soft-pack batteries. The fixed-direction characteristic of traditional explosion-proof valves makes it difficult to adapt to non-standard installation angles, resulting in poor installation compatibility of explosion-proof valves with different battery packs. Summary of the Invention

[0004] Embodiments of the present application provide an explosion-proof valve, a battery pack, and a vehicle, which can improve the installation compatibility of the explosion-proof valve with different battery packs to a certain extent. The technical solutions are as follows:

[0005] On the one hand, an explosion-proof valve is provided, including:

[0006] A fixed seat, an explosion-proof valve body, and a direction adjustment mechanism;

[0007] The fixed seat is used to connect with the battery pack case, and the fixed seat has a first ventilation hole communicating with the battery pack case;

[0008] One side of the fixed seat facing the direction adjustment mechanism has a bearing groove, the direction adjustment mechanism is rotatably connected in the bearing groove, and the part of the direction adjustment mechanism exposed from the bearing groove is detachably connected to the explosion-proof valve body; the direction adjustment mechanism has a first exhaust passage communicating the first ventilation hole and the internal chamber of the explosion-proof valve body;

[0009] Wherein, after the explosion-proof valve body is connected to the fixed seat through the direction adjustment mechanism, the explosion-proof valve body can rotate around the direction adjustment mechanism in any direction.

[0010] Optionally, the direction adjustment mechanism is a spherical structure, and one side of the direction adjustment mechanism facing the fixed seat has a spherical arc surface; the bearing groove has an arc-shaped concave surface that cooperates with the spherical arc surface;

[0011] Wherein, after the explosion-proof valve body is connected to the fixed seat through the direction adjustment mechanism, the spherical arc surface contacts the arc-shaped concave surface.

[0012] Optionally, the radius of curvature of the spherical arc surface is equal to the radius of curvature of the arc-shaped concave surface.

[0013] Optionally, the bearing groove further has an opening, and the bearing groove is used for bearing the direction adjustment mechanism placed through the opening;

[0014] Wherein, the size of the opening is smaller than the diameter of the direction adjustment mechanism, and the maximum width of the part of the direction adjustment mechanism located inside the bearing groove is greater than the maximum width of the part of the direction adjustment mechanism exposed outside the bearing groove.

[0015] Optionally, the fixed seat includes: a fixed seat body and a support shell connected to each other. The fixed seat body is connected to the battery pack housing, and the fixed seat body has the first ventilation hole. One side of the support shell facing away from the fixed seat body has the bearing groove;

[0016] Wherein, the support shell further has a through hole located at the bottom of the bearing groove, and the first ventilation hole and the first exhaust passage are connected through the through hole.

[0017] Optionally, one side of the explosion-proof valve body facing the direction adjustment mechanism has an adjustment rod, and the adjustment rod is detachably connected to the direction adjustment mechanism in the first exhaust passage;

[0018] Wherein, the adjustment rod has a second exhaust passage that communicates the first exhaust passage with the internal chamber of the explosion-proof valve body.

[0019] Optionally, the adjustment rod is threadedly connected to the direction adjustment mechanism in the first exhaust passage.

[0020] Optionally, the explosion-proof valve further includes: a waterproof and breathable membrane layer, the waterproof and breathable membrane layer is connected to the fixed seat at the first ventilation hole, and the waterproof and breathable membrane layer can cover the first ventilation hole.

[0021] On the other hand, a battery pack is provided, including:

[0022] An explosion-proof valve, the explosion-proof valve being the explosion-proof valve described in any one of the above.

[0023] On yet another hand, a vehicle is provided, including:

[0024] A vehicle body and a battery pack installed in the vehicle body, where the battery pack is the battery pack described above.

[0025] The beneficial effects brought by the technical solution provided in the embodiment of the present application at least include:

[0026] The direction adjustment mechanism is rotatably connected to the bearing groove of the fixed seat and is detachably connected to the explosion-proof valve body, enabling the explosion-proof valve body to rotate around the direction adjustment mechanism in any direction. This design breaks the limitation of the traditional fixed-direction installation of explosion-proof valves, enabling it to flexibly adapt to the installation requirements of various battery pack structures such as square modules, cylindrical modules, and soft-pack batteries, significantly improving the installation compatibility of the explosion-proof valve with different battery packs. Moreover, manufacturers do not need to develop special explosion-proof valves for different battery packs, thus greatly reducing the production cost of explosion-proof valves and simplifying the production process. In addition, through the first exhaust passage built in the direction adjustment mechanism being communicated with the first ventilation hole of the fixed seat, it is ensured that when a thermal runaway occurs in the battery pack, gas can sequentially enter the internal chamber of the explosion-proof valve body through the first ventilation hole and the first exhaust passage and be smoothly discharged to the outside. This design ensures that the explosion-proof valve body can achieve gas path penetration at any installation angle, thereby reliably maintaining the air pressure balance and the function of releasing thermal runaway gas, further enhancing the safety and applicability of the explosion-proof valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of an explosion-proof valve provided by an embodiment of the present application;

[0029] Figure 2 is a schematic structural diagram of a fixed seat provided by an embodiment of the present application;

[0030] Figure 3 is a schematic structural diagram of an explosion-proof valve body and a direction adjustment mechanism provided by an embodiment of the present application;

[0031] Figure 4 is a schematic structural diagram of another explosion-proof valve body and a direction adjustment mechanism provided by an embodiment of the present application;

[0032] Figure 5 is a schematic structural diagram of another fixed seat provided by an embodiment of the present application;

[0033] Figure 6 It is a schematic structural diagram of another fixing base provided by an embodiment of the present application;

[0034] Figure 7 is Figure 3 An exploded view of an explosion-proof valve body and a direction adjustment mechanism shown;

[0035] Figure 8 It is a schematic structural diagram of another explosion-proof valve provided by an embodiment of the present application.

[0036] Description of reference numerals

[0037] 000, explosion-proof valve; 100, fixing base; 200, explosion-proof valve body;

[0038] 300, direction adjustment mechanism; K1, first ventilation hole; M, bearing groove;

[0039] L1, first exhaust passage; S1, spherical arc surface; S2, arc-shaped concave surface;

[0040] P, opening; 101, fixing base body; 102, support shell;

[0041] 201, adjusting rod; L2, second exhaust passage; 400, waterproof and breathable film layer; Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0043] The orientation terms involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally based on the orientation shown in the drawings, and these orientation terms are only used to more clearly describe the relationship between the structures and the structures, rather than to describe the absolute orientation.

[0044] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meaning as commonly understood by those of ordinary skill in the art.

[0045] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the drawings.

[0046] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 which is a schematic structural diagram of an explosion-proof valve provided by an embodiment of the present application,Figure 2 This is a schematic structural view of a fixed seat provided by an embodiment of the present application. Figure 3 This is a schematic structural view of an explosion-proof valve body and a direction adjustment mechanism provided by an embodiment of the present application. The explosion-proof valve 000 may include: a fixed seat 100, an explosion-proof valve body 200, and a direction adjustment mechanism 300.

[0047] The fixed seat 100 in the explosion-proof valve 000 can be used to connect with the battery pack housing, and the fixed seat 100 can have a first ventilation hole K1 communicating with the battery pack housing.

[0048] One side of the fixed seat 100 in the explosion-proof valve 000 facing the direction adjustment mechanism 300 can have a bearing groove M. The direction adjustment mechanism 300 in the explosion-proof valve 000 is rotatably connected in the bearing groove M, and the part of the direction adjustment mechanism 300 exposed from the bearing groove M is detachably connected to the explosion-proof valve body 200. Wherein, the direction adjustment mechanism 300 has a first exhaust passage L1 communicating the first ventilation hole K1 and the internal chamber of the explosion-proof valve body 200.

[0049] Wherein, after the explosion-proof valve body 200 is connected to the fixed seat 100 through the direction adjustment mechanism 300, the explosion-proof valve body 200 can rotate around the direction adjustment mechanism 300 in any direction.

[0050] Exemplarily, the direction adjustment mechanism 300 in the explosion-proof valve 000 can be a spherical universal joint.

[0051] In the embodiment of the present application, the direction adjustment mechanism 300 is rotatably connected in the bearing groove M of the fixed seat 100 and is detachably connected to the explosion-proof valve body 200, so that the explosion-proof valve body 200 can rotate around the direction adjustment mechanism 300 in any direction. This design breaks the limitation of the traditional fixed-direction installation of the explosion-proof valve 000, enabling it to flexibly adapt to the installation requirements of various battery pack structures such as square modules, cylindrical modules, and soft-pack batteries, significantly improving the installation compatibility of the explosion-proof valve 000 with different battery packs. Moreover, manufacturers do not need to develop special explosion-proof valves 000 for different battery packs, thus greatly reducing the production cost of the explosion-proof valve 000 and simplifying the production process.

[0052] In addition, through the first exhaust passage L1 built in the direction adjustment mechanism 300 communicating with the first ventilation hole K1 of the fixed seat 100, it is ensured that when the battery pack undergoes thermal runaway, gas can sequentially pass through the first ventilation hole K1 and the first exhaust passage L1 into the internal chamber of the explosion-proof valve body 200 and be smoothly discharged to the outside. This design ensures that the explosion-proof valve body 200 can achieve gas path penetration at any installation angle, thereby reliably maintaining the air pressure balance and the function of releasing thermal runaway gas, further enhancing the safety and applicability of the explosion-proof valve 000.

[0053] In summary, the embodiment of the present application provides an explosion-proof valve, including: a fixed seat, an explosion-proof valve body, and a direction adjustment mechanism. The direction adjustment mechanism is rotatably connected in the bearing groove of the fixed seat and is detachably connected to the explosion-proof valve body, so that the explosion-proof valve body can rotate around the direction adjustment mechanism in any direction. This design breaks the limitation of the traditional explosion-proof valve installed in a fixed direction, enabling it to flexibly adapt to the installation requirements of various battery pack structures such as square modules, cylindrical modules, and soft-pack batteries, significantly improving the installation compatibility of the explosion-proof valve with different battery packs. Moreover, manufacturers do not need to develop special explosion-proof valves for different battery packs, thus greatly reducing the production cost of the explosion-proof valve and simplifying the production process. In addition, the first exhaust passage built in the direction adjustment mechanism communicates with the first ventilation hole of the fixed seat, ensuring that when the battery pack undergoes thermal runaway, gas can sequentially enter the internal chamber of the explosion-proof valve body through the first ventilation hole and the first exhaust passage and be discharged smoothly to the outside. This design ensures that the gas path of the explosion-proof valve body can be unblocked at any installation angle, thereby reliably maintaining the air pressure balance and the function of releasing thermal runaway gas, further improving the safety and applicability of the explosion-proof valve.

[0054] Optionally, please refer to Figure 4 and Figure 5 , Figure 4 which is a schematic structural diagram of another explosion-proof valve body and direction adjustment mechanism provided by the embodiment of the present application, Figure 5 and which is a schematic structural diagram of another fixed seat provided by the embodiment of the present application. The direction adjustment mechanism 300 in the explosion-proof valve 000 can be a spherical structure, and the side of the direction adjustment mechanism 300 facing the fixed seat 100 can have a spherical arc surface S1. The bearing groove M in the fixed seat 100 can have an arc-shaped concave surface S2 that matches the spherical arc surface S1.

[0055] Among them, after the explosion-proof valve body 200 in the explosion-proof valve 000 is connected to the fixed seat 100 through the direction adjustment mechanism 300, the spherical arc surface S1 can be in contact with the arc-shaped concave surface S2.

[0056] In this case, since both the spherical arc surface S1 and the arc-shaped concave surface S2 are arc-shaped, through the mutual cooperation of the spherical arc surface S1 and the arc-shaped concave surface S2, a greater rotational freedom of the direction adjustment mechanism 300 can be achieved, so that the explosion-proof valve body 200 can be adjusted at multiple angles.

[0057] In addition, the cooperation of the spherical arc surface S1 and the arc-shaped concave surface S2 can also reduce the frictional resistance when the explosion-proof valve body 200 rotates, reduce component wear, effectively extend the service life of the explosion-proof valve 000, and ensure the reliability and stability of the equipment during long-term operation.

[0058] In the embodiment of the present application, the radius of curvature of the spherical arc surface S1 of the direction adjusting mechanism 300 is equal to the radius of curvature of the arc-shaped concave surface S2 of the bearing groove M.

[0059] In this case, since the radii of curvature of the spherical arc surface S1 and the arc-shaped concave surface S2 are the same, it can be ensured that the two can achieve uniform fitting when they come into contact, thereby reducing the clearance and shaking during rotation, and improving the rotational stability of the direction adjusting mechanism 300. At the same time, the design with equal radii of curvature makes the pressure distribution between the contact surfaces of the direction adjusting mechanism 300 and the fixed seat 100 more uniform, thereby further reducing the frictional resistance during rotation, reducing component wear, and extending the service life of the explosion-proof valve 000.

[0060] Optionally, as Figure 5 shown, the bearing groove M in the fixed seat 100 may further have an opening P, and the bearing groove M can be used to carry the direction adjusting mechanism 300 placed through the opening P.

[0061] Among them, the size of the opening P in the bearing groove M is smaller than the diameter of the direction adjusting mechanism 300, and in the first direction X, the maximum width of the part of the direction adjusting mechanism 300 located in the bearing groove M is greater than the maximum width of the part of the direction adjusting mechanism 300 exposed from the bearing groove M, where the first direction X is perpendicular to the plane where the opening P is located.

[0062] It should be noted that the shape of the opening P can be various, for example: circular, oval, rectangular, square, etc. In the present application, the shape of the opening P is taken as an example of a circle for illustrative purposes, and the size of the opening P here refers to the diameter of the circle.

[0063] In this case, by making the size of the opening P smaller than the diameter of the direction adjusting mechanism 300 and the width of the part in the bearing groove M greater than the exposed part, a mechanical limiting structure is formed, effectively preventing the direction adjusting mechanism 300 from falling off the bearing groove M during rotation or vibration, and improving the stability and reliability of the explosion-proof valve 000.

[0064] In the embodiment of the present application, please refer to Figure 6 , Figure 6 which is a schematic structural diagram of another fixed seat provided by the embodiment of the present application. The fixed seat 100 in the explosion-proof valve 000 may include: a fixed seat body 101 and a support shell 102 connected to each other. The fixed seat body 101 in the fixed seat 100 can be connected to the battery pack housing, and the fixed seat body 101 can have a first ventilation hole K1; the side of the support shell 102 in the fixed seat 100 facing away from the fixed seat body 101 can have a bearing groove M.

[0065] Among them, the support shell 102 in the fixed seat 100 may also have a through hole (not shown) at the bottom of the bearing groove M, and the first ventilation hole K1 and the first exhaust passage L1 may be connected through the through hole.

[0066] In this case, when the battery pack undergoes thermal runaway, it can ensure that the gas passes through the first ventilation hole K1, the through hole, and the first exhaust passage L1 in sequence, quickly enters the internal chamber of the explosion-proof valve body 200, and is smoothly discharged to the external environment. Through the connection function of the through hole, the explosion-proof valve 000 can maintain unobstructed gas flow at any installation angle, thereby reliably realizing the function of releasing thermal runaway gas and further improving the safety of the explosion-proof valve 000.

[0067] Optionally, please refer to Figure 7 , Figure 7 is Figure 3 an exploded view of an explosion-proof valve body and a direction adjustment mechanism shown. One side of the explosion-proof valve body 200 in the explosion-proof valve 000 facing the direction adjustment mechanism 300 may have an adjustment rod 201, and the adjustment rod 201 is detachably connected to the direction adjustment mechanism 300 in the first exhaust passage L1.

[0068] Among them, the adjustment rod 201 has a second exhaust passage L2 connecting the first exhaust passage L1 and the internal chamber of the explosion-proof valve body 200.

[0069] In this way, through the design of the second exhaust passage L2, it first ensures the smooth flow of gas between the first exhaust passage L1 and the internal chamber of the explosion-proof valve body 200, avoiding gas path blockage. When the battery pack undergoes thermal runaway, the gas can pass through the first ventilation hole K1, the through hole, the first exhaust passage L1, and the second exhaust passage L2 in sequence, quickly enter the internal chamber of the explosion-proof valve body 200, and be smoothly discharged to the external environment, thereby significantly improving the safety performance of the explosion-proof valve 000. Secondly, the adjustment rod 201 and the direction adjustment mechanism 300 adopt a detachable connection design, simplifying the assembly and maintenance process of the explosion-proof valve body 200, reducing the installation difficulty and the later maintenance cost.

[0070] In addition, the adjustment rod 201 also enhances the connection strength between the explosion-proof valve body 200 and the direction adjustment mechanism 300, effectively preventing loosening or falling off caused by vibration or impact, and further improving the stability and reliability of the overall structure.

[0071] In the embodiment of the present application, the adjustment rod 201 in the explosion-proof valve body 200 is threadedly connected to the direction adjustment mechanism 300 in the first exhaust passage L1.

[0072] Exemplarily, the direction adjustment mechanism 300 has internal threaded holes distributed on the inner wall of the first exhaust passage L1. The adjusting rod 201 in the explosion-proof valve body 200 is provided with matching external threads, and the adjusting rod 201 is connected to the internal threads of the direction adjustment mechanism 300 distributed on the inner wall of the first exhaust passage L1 through its external threads.

[0073] In this way, through the threaded connection, the connection between the adjusting rod 201 and the direction adjustment mechanism 300 can be made more stable and reliable, ensuring the structural stability between the explosion-proof valve body 200 and the direction adjustment mechanism 300.

[0074] Optionally, please refer to Figure 8 , Figure 8 which is a schematic structural diagram of another explosion-proof valve provided by an embodiment of the present application. The explosion-proof valve 000 may further include: a waterproof and breathable film layer 400, which is connected to the fixed seat 100 at the first ventilation hole K1, and the waterproof and breathable film layer 400 can cover the first ventilation hole K1.

[0075] Exemplarily, the above-mentioned waterproof and breathable film layer 400 may be a waterproof and breathable film made of polytetrafluoroethylene (PTFE) material, or may be made of other polymer materials with waterproof and breathable properties (such as expanded polytetrafluoroethylene ePTFE or polyurethane PU), as long as it ensures good air permeability, waterproofness and high temperature resistance.

[0076] Generally, during the use of the power battery, due to the repeated charging and discharging of the battery cells, a small amount of gas will be generated. The air permeability function of the waterproof and breathable film layer 400 can ensure the balance of air pressure inside and outside the power battery, and at the same time effectively prevent external moisture from seeping into the battery interior, thereby protecting the performance and life of the battery.

[0077] In addition, when the power battery undergoes thermal runaway, a large amount of gas will be rapidly generated inside. At this time, the gas pressure increases and breaks through the waterproof and breathable film layer 400, enabling the gas to quickly pass through the first ventilation hole K1, the through hole, the first exhaust passage L1 and the second exhaust passage L2, and finally be discharged from the explosion-proof valve body 200 to the external environment. In this way, not only the air pressure balance and waterproof performance during the normal use of the battery are ensured, but also a rapid exhaust passage is provided in extreme situations such as thermal runaway, ensuring the safety of the battery pack.

[0078] Optionally, one side of the support shell 102 in the fixed seat 100 facing the fixed seat body 101 has an annular desiccant (not shown), and the annular desiccant can completely cover the connection area between the support shell 102 and the fixed seat body 101, and is used to absorb the liquid that may exist inside the battery pack (such as trace leakage of electrolyte or condensed water caused by environmental humidity).

[0079] For example, the annular desiccant can be made of a highly hygroscopic material (such as silica gel, molecular sieve or composite desiccant material) and has excellent hygroscopic properties and chemical stability.

[0080] In this way, the annular desiccant can effectively reduce the erosion of the internal structure of the explosion-proof valve 000 (such as the direction adjustment mechanism 300, the waterproof and breathable membrane layer 400, etc.) by the liquid, and significantly improve the long-term reliability and service life of the explosion-proof valve 000. At the same time, the annular desiccant can also prevent liquid from entering the first exhaust channel L1, ensuring that the gas release path is unobstructed during thermal runaway, thereby ensuring the stability of the explosion-proof function and the overall safety of the battery pack. In addition, the annular desiccant and the support shell 102 structure are closely matched, further enhancing the sealing of the connection area between the fixing seat 100 and the battery pack shell, providing multiple guarantees for the stable operation of the battery pack under complex working conditions.

[0081] In summary, an embodiment of the present application provides an explosion-proof valve, including: a fixed seat, an explosion-proof valve body and a direction adjustment mechanism. The direction adjustment mechanism is rotatably connected to the bearing groove of the fixed seat, and is detachably connected to the explosion-proof valve body, so that the explosion-proof valve body can rotate in any direction around the direction adjustment mechanism. This design breaks the limitation of the fixed direction installation of the traditional explosion-proof valve, so that it can flexibly adapt to the installation requirements of various battery pack structures such as square modules, cylindrical modules and soft-pack batteries, and significantly improves the installation compatibility of the explosion-proof valve for different battery packs. In addition, manufacturers do not need to develop special explosion-proof valves for different battery packs, thereby greatly reducing the production cost of the explosion-proof valve and simplifying the production process. In addition, the first exhaust channel built into the direction adjustment mechanism is connected to the first vent of the fixed seat to ensure that when the battery pack is thermally runaway, the gas can enter the internal chamber of the explosion-proof valve body through the first vent and the first exhaust channel in turn, and be discharged to the outside smoothly. This design ensures that the explosion-proof valve body can achieve gas path penetration at any installation angle, thereby reliably maintaining the gas pressure balance and thermal runaway gas release function, further improving the safety and applicability of the explosion-proof valve.

[0082] The embodiment of the present application further provides a battery pack, which may include: an explosion-proof valve 000, wherein the explosion-proof valve 000 is any of the explosion-proof valves 000 described above.

[0083] The embodiment of the present application also provides a vehicle, which may be a hybrid vehicle, a pure oil vehicle, or an extended-range electric vehicle, etc. The vehicle may include: a vehicle body, and a battery pack installed in the vehicle body, wherein the battery pack is the above-mentioned battery pack.

[0084] In the present application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0085] Other embodiments of the present application will be readily contemplated by those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only regarded as exemplary.

[0086] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

[0087] The above is only for the convenience of those skilled in the art to understand the technical solution of the present application, and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An explosion-proof valve, characterized in that: include: A fixing seat (100), an explosion-proof valve body (200) and a direction adjustment mechanism (300); The fixing seat (100) is used to be connected to a battery pack shell, and the fixing seat (100) has a first vent hole (K1) in communication with the battery pack shell; The fixing seat (100) has a bearing groove (M) on one side facing the direction adjustment mechanism (300), the direction adjustment mechanism (300) is rotatably connected in the bearing groove (M), and the portion of the direction adjustment mechanism (300) exposed from the bearing groove (M) is detachably connected to the explosion-proof valve body (200); the direction adjustment mechanism (300) has a first exhaust channel (L1) communicating with the first vent hole (K1) and the internal chamber of the explosion-proof valve body (200); After the explosion-proof valve body (200) is connected to the fixing seat (100) via the direction adjustment mechanism (300), the explosion-proof valve body (200) can rotate in any direction around the direction adjustment mechanism (300).

2. The explosion-proof valve according to claim 1, characterized in that: The direction adjustment mechanism (300) is a spherical structure, and the side of the direction adjustment mechanism (300) facing the fixing seat (100) has a spherical arc surface (S1); the bearing groove (M) has an arc-shaped concave surface (S2) matching the spherical arc surface (S1); After the explosion-proof valve body (200) is connected to the fixing seat (100) via the direction adjustment mechanism (300), the spherical arc surface (S1) contacts the arc concave surface (S2).

3. The explosion-proof valve according to claim 2, characterized in that: The curvature radius of the spherical arc surface (S1) is equal to the curvature radius of the arc-shaped concave surface (S2).

4. The explosion-proof valve according to claim 2, characterized in that: The bearing slot (M) also has an opening (P), and the bearing slot (M) is used to bear the direction adjustment mechanism (300) placed through the opening (P); The size of the opening (P) is smaller than the diameter of the direction adjustment mechanism (300), and the maximum width of the portion of the direction adjustment mechanism (300) located in the bearing groove (M) is greater than the maximum width of the portion of the direction adjustment mechanism (300) exposed in the bearing groove (M).

5. The explosion-proof valve according to any one of claims 1 to 4, characterized in that: The fixing seat (100) comprises: a fixing seat body (101) and a supporting shell (102) connected to each other, the fixing seat body (101) being connected to the battery pack shell, the fixing seat body (101) having the first vent hole (K1), and the supporting shell (102) having the bearing groove (M) on a side facing away from the fixing seat body (101); The supporting shell (102) further comprises a through hole located at the bottom of the bearing groove (M), and the first vent hole (K1) and the first exhaust channel (L1) are connected via the through hole.

6. The explosion-proof valve according to claim 5, characterized in that: The explosion-proof valve body (200) has an adjustment rod (201) on one side facing the direction adjustment mechanism (300), and the adjustment rod (201) is detachably connected to the direction adjustment mechanism (300) in the first exhaust passage (L1); The adjusting rod (201) has a second exhaust passage (L2) communicating with the first exhaust passage (L1) and the inner chamber of the explosion-proof valve body (200).

7. The explosion-proof valve according to claim 6, characterized in that: The adjustment rod (201) is threadedly connected to the direction adjustment mechanism (300) in the first exhaust channel (L1).

8. The explosion-proof valve according to claim 1, characterized in that: The explosion-proof valve further comprises: a waterproof and breathable membrane layer (400), wherein the waterproof and breathable membrane layer (400) is connected to the fixing seat (100) at the first vent hole (K1), and the waterproof and breathable membrane layer (400) is capable of covering the first vent hole (K1).

9. A battery pack, characterized in that: include: An explosion-proof valve, wherein the explosion-proof valve is the explosion-proof valve according to any one of claims 1 to 8.

10. A vehicle, characterized in that: include: A vehicle body, and a battery pack installed in the vehicle body, wherein the battery pack is the battery pack according to claim 9.

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