Explosion-proof valve

Abstract

The utility model relates to battery technical field, the utility model provides a kind of explosion-proof valve, comprising: valve plate, first end and second end;Reinforcing member, including first reinforcing rib and second reinforcing rib, first reinforcing rib extends along the length direction of valve plate, second reinforcing rib is close to first end and second end setting, second reinforcing rib at least has oblique connection's first submuscle and second submuscle;Explosion-proof score, set in the upper surface of valve plate and around the circumferential side of valve plate setting, explosion-proof score has the first side close to reinforcing member and the second side away from reinforcing member;And, transition surface, including set in the upper surface of valve plate and around the first side setting transition bevel, one end of transition bevel connects explosion-proof score, the other end extends in the direction away from first side.The explosion-proof valve provided by the utility model aims to solve the problem that the structural stiffness of the explosion-proof valve in the conventional technology is insufficient, the overall flatness is difficult to guarantee, and deformation or depression is prone to occur.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an explosion-proof valve. Background Technology

[0002] Explosion-proof valves are used in the field of battery technology. Battery cells contain a large number of chemical substances that accumulate pressure during charging and discharging. If this pressure cannot be balanced or released in time, it can lead to battery deformation or even explosion, seriously endangering the safety of users and their property. Explosion-proof valves are designed to balance the internal pressure of the battery and prevent pressure imbalances that could cause an explosion. However, in existing technologies, explosion-proof valves lack structural rigidity, and their overall flatness is difficult to guarantee, making them prone to deformation or denting. Utility Model Content

[0003] This utility model provides an explosion-proof valve, which aims to solve the problems of insufficient structural rigidity, difficulty in ensuring overall flatness, and easy deformation or denting in traditional explosion-proof valves.

[0004] To address the problems existing in the prior art, this utility model provides an explosion-proof valve, comprising:

[0005] The valve plate has a first end and a second end that are disposed opposite to each other along the length direction;

[0006] The reinforcing member includes a first reinforcing rib and a second reinforcing rib disposed on the upper surface of the valve plate. The first reinforcing rib extends along the length direction of the valve plate, and the second reinforcing rib is disposed near the first end and the second end. The second reinforcing rib has at least a first branch rib and a second branch rib that are inclinedly connected. The first branch rib and the second branch rib extend from the connection point toward both sides of the valve plate in the width direction.

[0007] Explosion-proof notches are provided on the upper surface of the valve plate and surrounding the periphery of the valve plate, the explosion-proof notches having a first side close to the reinforcing member and a second side away from the reinforcing member; and,

[0008] The transition surface includes a transition slope disposed on the upper surface of the valve plate and surrounding the first side, one end of the transition slope being connected to the explosion-proof groove, and the other end extending away from the first side.

[0009] According to the explosion-proof valve provided by this utility model, each of the second reinforcing ribs is connected to both ends of the first reinforcing rib.

[0010] According to the explosion-proof valve provided by this utility model, the first rib and the second rib are arranged in a cross pattern.

[0011] According to the explosion-proof valve provided by this utility model, the second reinforcing rib further includes a third sub-rib, and the first sub-rib, the second sub-rib and the third sub-rib are arranged in a surrounding manner.

[0012] According to the explosion-proof valve provided by this utility model, the first rib and the second rib are both straight, or the first rib and the second rib are both curved.

[0013] According to the explosion-proof valve provided by this utility model, the first reinforcing rib is in the form of a straight line, a broken line, or a curve.

[0014] According to the present invention, an explosion-proof valve is provided in which the first reinforcing rib and the second reinforcing rib are recessed in the upper surface of the valve plate; and / or, the first reinforcing rib and the second reinforcing rib protrude from the upper surface of the valve plate.

[0015] According to the present invention, an explosion-proof valve is provided, wherein the explosion-proof groove is annular, the explosion-proof groove has an explosion-proof section and a material-connecting section, and the thickness of the explosion-proof section is less than the thickness of the material-connecting section.

[0016] According to the present invention, one end of the first rib and the second rib are respectively connected to the first reinforcing rib, and the other end are respectively connected to the explosion-proof section of the explosion-proof groove.

[0017] According to the present invention, an explosion-proof valve is provided, wherein the transition surface further includes a transition plane disposed on the upper surface of the valve plate and surrounding the second side, one end of the transition plane is connected to the explosion-proof groove, and the other end extends away from the second side.

[0018] The explosion-proof valve provided by this utility model, through the setting of reinforcing members, especially the first and second reinforcing ribs set on the upper surface of the valve plate, and the second reinforcing rib having the first and second sub-ribs connected at an incline, significantly enhances the strength of the valve plate in both the length and width directions, and enables the valve plate to be reinforced in both length and width directions in a coordinated manner, further improving the structural rigidity of the valve plate in the plane; in addition, the setting of the transition slope can reduce stress concentration on the valve plate, thereby dispersing stress, which helps to reduce the molding difficulty of the explosion-proof valve and improve the overall strength of the explosion-proof valve. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the explosion-proof valve provided by this utility model;

[0021] Figure 2 A schematic diagram of the second embodiment of the explosion-proof valve provided by this utility model;

[0022] Figure 3 This is a structural schematic diagram of the third embodiment of the explosion-proof valve provided by this utility model;

[0023] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional view along the AA direction;

[0024] Figure 5 yes Figure 3 A schematic diagram of the cross-sectional view along the BB direction;

[0025] Figure 6 This is a schematic diagram of the installation structure of the explosion-proof valve and the battery.

[0026] Reference numerals: 1. Valve plate; 11. Explosion-proof groove; 111. Explosion-proof section; 112. Connecting section; 2. Reinforcing member; 21. First reinforcing rib; 22. Second reinforcing rib; 221. First sub-rib; 222. Second sub-rib; 223. Third sub-rib; 3. Transition surface; 31. Transition slope; 32. Transition plane; 4. Battery; 41. Mounting port. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0029] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0033] The following is combined with Figures 1-6 This invention describes the explosion-proof valve provided by this utility model.

[0034] Given that traditional explosion-proof valves suffer from insufficient structural rigidity and difficulty in ensuring overall flatness, making them prone to deformation or dents, this invention provides an explosion-proof valve comprising a valve plate 1, a reinforcing member 2, and a transition surface 3.

[0035] The valve plate 1 has a first end and a second end arranged opposite to each other along its length. The reinforcing member 2 includes a first reinforcing rib 21 and a second reinforcing rib 22 disposed on the upper surface of the valve plate 1. The first reinforcing rib 21 extends along the length of the valve plate 1 to enhance the structural rigidity of the valve plate 1 in the length direction. The second reinforcing rib 22 is disposed near the first end and the second end, extending towards the first end and the second end to enhance the structural rigidity of the valve plate 1 in the width direction. It should be noted that the structural form of the second reinforcing rib 22 is diverse, as long as it adapts to the shape of the valve body surface and can achieve the technical effect of improving the structural rigidity in the width direction. For example, in order to better adapt to the shape of the structural surface and better enhance the structural rigidity, the second reinforcing rib 22 provided in this embodiment has at least a first branch rib 221 and a second branch rib 222 that are inclinedly connected, with the first branch rib 221 and the second branch rib 222 extending from the connection point towards both sides of the valve plate 1 in the width direction. The first rib 221 extends to one side of the valve plate 1, and the second rib 222 extends to the other side of the valve plate 1. By extending the first rib 221 and the second rib 222 to both sides of the valve plate 1, the structural stiffness of the valve plate 1 in the width direction is enhanced, thereby improving its resistance to deformation.

[0036] Explosion-proof notches 11 are provided on the upper surface of the valve plate 1 and surround the periphery of the valve plate 1. The explosion-proof notches 11 have a first side close to the reinforcing member 2 and a second side away from the reinforcing member 2. Please refer to Figure 1 The reinforcing member 2 is located on the inner side of the explosion-proof groove 11, i.e., the first side, and on the outer side of the explosion-proof groove 11, i.e., the second side. When the explosion-proof valve is assembled to the battery 4, if the internal pressure of the battery 4 is too high, the explosion-proof valve will open along the explosion-proof groove 11 to release pressure and ensure installation. It is understood that the residual thickness of the explosion-proof groove 11 is less than the thickness of the valve plate 1.

[0037] The transition surface 3 includes a transition slope 31 disposed on the upper surface of the valve plate 1 and surrounding the first side. One end of the transition slope 31 is connected to the explosion-proof notch 11, and the other end extends away from the first side. (See reference...) Figure 4 and Figure 5 By setting the transition slope 31, the thickness of the valve plate 1 is gradually reduced towards the explosion-proof groove 11. This is conducive to material flow and deformation, and can also prevent stress concentration and improve the strength of the valve plate 1.

[0038] In an optional embodiment, the first reinforcing rib 21 and the second reinforcing rib 22 can be separately configured. However, to further enhance the reinforcing effect, the second reinforcing rib 22 is connected to both ends of the first reinforcing rib 21. As mentioned above, the first reinforcing rib 21 extends along the length direction of the valve plate 1 to enhance the structural stiffness of the valve plate 1 in the length direction. The second reinforcing rib 22 improves the structural stiffness of the valve plate 1 in the width direction. By connecting the second reinforcing rib 22 to both ends of the first reinforcing rib 21, the improvements in stiffness in the length and width directions are combined, resulting in overall reinforcement and improved planar structural stiffness of the valve plate 1. This allows it to adapt to more extreme working conditions, has a wider range of applications, and provides better performance.

[0039] As previously described, the first rib 221 and the second rib 222 extend from the connection point toward both sides of the valve plate 1. The first rib 221 and the second rib 222 may overlap at their ends, for example, forming a V-shape. In another optional embodiment, the first rib 221 and the second rib 222 are arranged intersectingly, forming a V-shape. Figure 1 The X-shaped structure in the middle allows the first reinforcing rib 21 and the second reinforcing rib 22 to have overlapping reinforcing areas, resulting in a better reinforcing effect on the valve plate 1.

[0040] Furthermore, even with the first rib 221 and the second rib 222 provided, the structural rigidity at both ends of the valve plate 1 is always difficult to guarantee due to its large length-to-width ratio. To avoid this problem and further improve the overall structural rigidity, please refer to one embodiment provided in this utility model. Figure 2 The second reinforcing rib 22 also includes a third rib 223, with the first rib 221, second rib 222, and third rib 223 forming an enclosing arrangement. This enclosing arrangement significantly improves the overall rigidity at both ends of the valve plate 1, preventing structural imbalance and adverse deformation. In an optional embodiment, the first rib 221, second rib 222, and third rib 223 can be enclosed to form a... Figure 2 In other embodiments, the triangle may also include a fourth rib, a fifth rib, etc., and these multiple ribs can be enclosed to form any polygonal shape, such as a quadrilateral, pentagon, or hexagon. It should also be noted that the multiple ribs may not be enclosed; they may be arranged radially or intersecting to further enhance rigidity. This invention does not limit the scope of the invention in this regard.

[0041] Furthermore, the shapes of the first and second sub-ribs 221 and 222 of the second stiffener 22 are not limited; any shape that achieves the intended technical effect can be used. If a simple and clear structure and slightly simplified process are desired, a straight-line arrangement can be chosen. If a wider range of structural stiffness improvement is desired, a curved arrangement can be used. Those skilled in the art can choose according to the actual situation. Correspondingly, a similar situation applies to the first stiffener 21, which can be arranged in a straight line, a broken line, or a curve.

[0042] Specifically, the first reinforcing rib 21 and the second reinforcing rib 22 can be either protruding ribs above the surface of the valve plate 1 or recessed grooves below the surface of the valve plate 1. This invention does not limit the arrangement. They can be selected as needed based on actual conditions, i.e., the first reinforcing rib 21 and the second reinforcing rib 22 can be recessed into the upper surface of the valve plate 1; and / or, the first reinforcing rib 21 and the second reinforcing rib 22 can protrude from the upper surface of the valve plate 1. Of course, in other optional embodiments, the first reinforcing rib 21 and the second reinforcing rib 22 can partially protrude from the upper surface of the valve plate 1 or partially recessed into the upper surface of the valve plate 1.

[0043] As mentioned earlier, the explosion-proof valve opens along the explosion-proof notch 11. To prevent the explosion-proof valve from flying out when fully open, the explosion-proof notch 11 in this invention has an explosion-proof section 111 and a connecting section 112, with the thickness of the explosion-proof section 111 being less than the thickness of the connecting section 112. It is understood that the residual thickness of the explosion-proof notch 11 is less than the thickness of the valve plate 1 itself, and the residual thickness of the explosion-proof section 111 is less than the residual thickness of the connecting section 112. Preferably, the length of the connecting section 112 can be set to 5-30mm. With this configuration, when the explosion-proof valve releases pressure, it will first curl up along the explosion-proof notch 11, but because the connecting section 112 is thicker, it will remain connected to the valve plate 1, preventing the middle part of the explosion-proof valve from flying out.

[0044] Furthermore, the first rib 221 and the second rib 222 can be positioned away from the explosion-proof notch 11. In other optional embodiments, one end of the first rib 221 and the second rib 222 can be connected to the first reinforcing rib 21, and the other end can be connected to the explosion-proof section 111 of the explosion-proof notch 11, thereby increasing the overall strength of the structure.

[0045] Please see Figure 4 and Figure 5The transition surface 3 also includes a transition plane 32 disposed on the upper surface of the valve plate 1 and surrounding the second side. One end of the transition plane 32 is connected to the explosion-proof notch 11, and the other end extends away from the second side. The arrangement of the transition plane 32 and the valve plate 1 itself form a stepped structure. The protrusion formed on the side of the transition plane 32 away from the explosion-proof notch 11 can serve as a welding protrusion to the battery 4. The transition plane 32 itself can prevent stress concentration, making the thickness of the valve plate 1 change uniformly and improving its strength.

[0046] Please see Figure 6 This utility model also provides a battery 4, including a body and the explosion-proof valve as described above. The body has an installation port 41, through which the explosion-proof valve is installed to the body to maintain the safety of the battery 4. Since the main improvement of this utility model lies in the explosion-proof valve, the detailed structure of the battery 4 will not be described in detail.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An explosion-proof valve, characterized in that, include: The valve plate has a first end and a second end that are disposed opposite to each other along the length direction; The reinforcing member includes a first reinforcing rib and a second reinforcing rib disposed on the upper surface of the valve plate. The first reinforcing rib extends along the length direction of the valve plate, and the second reinforcing rib is disposed near the first end and the second end. The second reinforcing rib has at least a first branch rib and a second branch rib that are inclinedly connected. The first branch rib and the second branch rib extend from the connection point toward both sides of the valve plate in the width direction. Explosion-proof notches are provided on the upper surface of the valve plate and surrounding the periphery of the valve plate, the explosion-proof notches having a first side close to the reinforcing member and a second side away from the reinforcing member; and, The transition surface includes a transition slope disposed on the upper surface of the valve plate and surrounding the first side, one end of the transition slope being connected to the explosion-proof groove, and the other end extending away from the first side.

2. The explosion-proof valve according to claim 1, characterized in that, Each of the second reinforcing ribs is connected to both ends of the first reinforcing rib.

3. The explosion-proof valve according to claim 1, characterized in that, The first and second reinforcing bars are arranged in an intersecting manner.

4. The explosion-proof valve according to claim 1, characterized in that, The second reinforcing rib also includes a third sub-rib, which is arranged in a manner that surrounds the first sub-rib, the second sub-rib, and the third sub-rib.

5. The explosion-proof valve according to claim 1, characterized in that, Both the first reinforcing bar and the second reinforcing bar are straight lines, or both are curved lines.

6. The explosion-proof valve according to claim 1, characterized in that, The first reinforcing rib is straight, broken, or curved.

7. The explosion-proof valve according to claim 1, characterized in that, The first reinforcing rib and the second reinforcing rib are recessed in the upper surface of the valve plate; and / or, the first reinforcing rib and the second reinforcing rib protrude from the upper surface of the valve plate.

8. The explosion-proof valve according to claim 1, characterized in that, The explosion-proof markings are annular, and the explosion-proof markings have an explosion-proof section and a connecting section, the thickness of the explosion-proof section being less than the thickness of the connecting section.

9. The explosion-proof valve according to claim 8, characterized in that, One end of the first rib and the second rib are respectively connected to the first reinforcing rib, and the other end are respectively connected to the explosion-proof section of the explosion-proof groove.

10. The explosion-proof valve according to claim 1, characterized in that, The transition surface also includes a transition plane disposed on the upper surface of the valve and surrounding the second side, one end of the transition plane being connected to the explosion-proof groove, and the other end extending away from the second side.

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