Anti-explosion valve bearing assembly and battery

Abstract

The utility model relates to the technical field of batteries, in particular to an anti-explosion valve bearing assembly and a battery, and the anti-explosion valve bearing assembly comprises a base body and an anti-explosion valve; wherein the anti-explosion valve is installed on the base body, and reinforcing ribs located on the inner side and / or the outer side of the anti-explosion valve are formed on the base body in the first preset direction. According to the bearing structure of the anti-explosion valve, the reinforcing ribs are arranged on the inner side and / or the outer side of the anti-explosion valve, the overall mechanical strength of the anti-explosion valve area is enhanced, the anti-deformation capacity of the anti-explosion valve is improved, the reinforcing ribs are in a net shape, the strength is higher, the anti-deformation capacity is higher, and the reinforcing ribs comprise the multiple triangular reinforcing structures; the stability is better, and the deformation resistance is higher. In addition, the reinforcing ribs can be arranged on the base body in a welding or punch forming mode, operation is easy and convenient, and selectivity is more.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an explosion-proof valve support assembly and a battery. Background Technology

[0002] Currently, in fields such as electronics and electric vehicles, the demand for higher battery energy density is increasing, which in turn requires battery structural components to occupy as little space as possible. Structural components such as covers and housings are gradually becoming thinner and lighter. However, as covers and housings become thinner and lighter, the mechanical strength of these components decreases, reducing their resistance to bending deformation. For explosion-proof valves, which are typically welded to covers or housings, and which serve as the load-bearing structure, the thinning of these covers and housings directly affects the structural stability of the explosion-proof valve. Utility Model Content

[0003] The purpose of this application is to provide an explosion-proof valve support component and a battery, which to a certain extent solves the technical problem in the prior art that the thinning of the battery cover and shell directly affects the structural stability of the explosion-proof valve on it.

[0004] This application provides an explosion-proof valve support assembly, including: a base and an explosion-proof valve; wherein, the explosion-proof valve is mounted on the base, and along a first preset direction, the base is formed with reinforcing ribs located inside and / or outside the explosion-proof valve.

[0005] In the above technical solution, further, along the first preset direction, the substrate is formed with a mounting through hole penetrating its inner and outer sides, the reinforcing rib is disposed in the mounting through hole to form a mounting groove with an opening facing outward along the first preset direction, and the explosion-proof valve is installed in the mounting groove.

[0006] In any of the above technical solutions, the substrate is further provided with an annular reinforcing protrusion located on the outer periphery of the mounting groove.

[0007] In any of the above technical solutions, further, along the first preset direction, the height of the annular reinforcing protrusion relative to the substrate is h, and h≥0.01mm.

[0008] In any of the above technical solutions, the annular reinforcing protrusion is further disposed on the outer side of the substrate.

[0009] In any of the above technical solutions, further, along the first preset direction, the projected area of ​​the mounting through hole is greater than the opening area of ​​the explosion-proof valve.

[0010] In any of the above technical solutions, the reinforcing ribs are further described as a mesh.

[0011] In any of the above technical solutions, the reinforcing rib further includes an outer ring rib plate connected to each other and a plurality of reinforcing rib plates, and the plurality of reinforcing rib plates are sequentially arranged in the outer ring rib plate along a second preset direction.

[0012] In any of the above technical solutions, further, any two adjacent reinforcing ribs are arranged in parallel.

[0013] In any of the above technical solutions, further, one end of any two adjacent reinforcing ribs intersects to form a V-shaped structure.

[0014] In any of the above technical solutions, the extension lines of any two adjacent reinforcing ribs intersect to form a V-shaped structure.

[0015] In any of the above technical solutions, further, along the first preset direction, the thickness of the reinforcing rib is a, and a≥0.01mm.

[0016] In any of the above technical solutions, further, an exhaust vent is provided on the reinforcing rib and / or on the side of the reinforcing rib, which communicates with the inner and outer sides of the base along the first preset direction.

[0017] In any of the above technical solutions, the reinforcing ribs are further arranged on the substrate by welding or stamping.

[0018] In any of the above technical solutions, further, along the first preset direction, the reinforcing rib does not protrude from the inner surface of the substrate.

[0019] This application also provides a battery that includes the explosion-proof valve support assembly described in any of the above technical solutions, and thus has all the beneficial technical effects of the explosion-proof valve support assembly, which will not be repeated here.

[0020] Compared with the prior art, the beneficial effects of this application are as follows:

[0021] The explosion-proof valve bearing assembly provided in this application features reinforcing ribs on the inner and / or outer sides of the explosion-proof valve, which enhances the overall mechanical strength of the explosion-proof valve area, effectively resists deformation, and thus ensures the stability of the explosion-proof valve. Furthermore, the reinforcing ribs are arranged on the inner side of the explosion-proof valve, so they do not affect the opening of the explosion-proof valve, improving the safety and reliability of battery use. Preferably, the reinforcing ribs are mesh-like, which has higher strength and stronger resistance to deformation. Moreover, the reinforcing ribs can be configured as a reinforcing structure including multiple triangles, which provides better stability and stronger resistance to deformation.

[0022] In addition, reinforcing ribs can be arranged on the base material by welding or stamping, which is simple and convenient to operate and offers more options.

[0023] In addition, an adjacent annular reinforcing protrusion is provided on the outer periphery of the explosion-proof valve to further increase the strength of the outer periphery of the explosion-proof valve and effectively resist deformation.

[0024] Furthermore, along the second preset direction, the reinforcing rib does not protrude from the inner surface of the substrate, thereby effectively avoiding interference between the reinforcing rib and structures such as the lower plastic on the inner side of the cover plate. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the explosion-proof valve bearing assembly provided in the embodiments of this application;

[0027] Figure 2 An exploded view of the explosion-proof valve bearing assembly provided in the embodiments of this application;

[0028] Figure 3 for Figure 2 A magnified structural diagram at point A;

[0029] Figure 4 This is another structural schematic diagram of the explosion-proof valve bearing assembly provided in an embodiment of this application.

[0030] Figure label:

[0031] 1-Base, 11-Reinforcing rib, 111-Outer ring reinforcing rib, 112-Reinforcing rib, 113-Exhaust hole, 12-Mounting groove, 13-Ring reinforcing protrusion, 2-Explosion-proof valve. Detailed Implementation

[0032] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0033] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0034] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] The following reference Figures 1 to 4 This application describes an explosion-proof valve carrier assembly and a battery according to some embodiments thereof.

[0038] Example 1

[0039] See Figures 1 to 4 As shown, an embodiment of this application provides an explosion-proof valve support assembly, including: a base 1 and an explosion-proof valve 2; wherein, the explosion-proof valve 2 is installed on the base 1, and along a first preset direction a, the base 1 has a reinforcing rib 11 located inside the explosion-proof valve 2.

[0040] As can be seen from the structure described above, the substrate 1 provided in this application can be the battery casing, and will be used as an example for explanation later. A reinforcing rib 11 is provided on the inner casing of the explosion-proof valve 2, which strengthens the overall mechanical strength of the explosion-proof valve 2 area, effectively resists deformation, and thus ensures the stability of the explosion-proof valve 2. In addition, the reinforcing rib 11 is arranged on the inner side of the explosion-proof valve 2, which will not affect the opening of the explosion-proof valve 2, and improves the safety and reliability of battery use.

[0041] Furthermore, preferably, the first preset direction a is the direction of the wall thickness of the shell.

[0042] It should be noted that: the inner side of the explosion-proof valve 2 refers to the side close to the battery electrode group along the first preset direction a; the outer side of the explosion-proof valve 2 refers to the side away from the battery electrode group along the first preset direction a, and preferably, the first preset direction a is the direction of the wall thickness of the explosion-proof valve bearing component.

[0043] Furthermore, it is not limited to providing reinforcing ribs 11 only on the inner side of the explosion-proof valve 2 along the first preset direction a, but it is also possible to provide reinforcing ribs 11 only on the outer side of the explosion-proof valve 2, or to provide reinforcing ribs 11 on both the inner and outer sides of the explosion-proof valve 2 at the same time.

[0044] In addition, the substrate 1 provided in this application can also be a cover plate for the battery, and reinforcing ribs 11 are provided on the cover plate and on the inner and / or outer side of the explosion-proof valve 2 along the thickness direction of the cover plate, which can increase the strength and effectively resist deformation, thereby ensuring the stability of the explosion-proof valve 2.

[0045] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, along the first preset direction a, the substrate 1 has a mounting through hole that extends through its inner and outer sides. The reinforcing rib 11 is disposed in the mounting through hole so that a portion of the electrode group away from the battery forms a mounting groove 12 with an opening facing outward along the first preset direction a. The explosion-proof valve 2 is installed in the mounting groove 12.

[0046] As can be seen from the structure described above, the mounting through hole is divided into two parts by the reinforcing rib 11. The outer part along the first preset direction a is the aforementioned mounting groove 12, which is used to install the explosion-proof valve 2, while the through hole part below the explosion-proof valve 2 serves as an exhaust channel for exhausting air in case of thermal runaway.

[0047] In this embodiment, preferably, as follows: Figure 3 As shown, the substrate 1 has an annular reinforcing protrusion 13 located on the outer periphery of the mounting groove 12.

[0048] As can be seen from the structure described above, the annular reinforcing protrusion 13 located around the explosion-proof valve 2 further enhances the overall mechanical strength of the explosion-proof valve 2 area and improves the deformation resistance of the explosion-proof valve 2.

[0049] Furthermore, preferably, the annular reinforcing protrusion is disposed on the outer side of the substrate 1 to prevent scratching the battery electrode assembly and to protect the electrode assembly. Of course, it is not limited to this; the annular reinforcing protrusion 13 may also be disposed on the inner side of the substrate 1.

[0050] In this embodiment, preferably, as follows: Figure 3 As shown, along the first preset direction a, the height of the annular reinforcing protrusion 13 relative to the base 1 is h, and h≥0.01mm.

[0051] As can be seen from the structure described above, if the height of the reinforcing rib 11 is too large, it will occupy a lot of space, easily interfere with other components, which is not conducive to the overall capacity improvement of the battery pack, and it will be difficult to process. If the height of the reinforcing rib 11 is too small, it will not play a high reinforcing role. Therefore, the height h between the reinforcing rib 11 and the surface of the substrate 1 on which the reinforcing rib 11 is formed is between 0.1 mm and 5 mm.

[0052] Furthermore, preferably, the base 1 is stamped to form a protrusion protruding outward along the first preset direction a. A groove structure is then formed on the inner side of the base 1 at the position corresponding to the protrusion. The protrusion is then stamped again to form a concave mounting groove 12. The aforementioned annular reinforcing protrusion 13 is naturally formed on the outer periphery of the mounting groove 12. This molding operation is simple and convenient, avoiding subsequent processing. Moreover, the integrated structure has higher strength. Preferably, the aforementioned reinforcing rib 11 can be stamped on the bottom wall of the mounting groove 12. Of course, the structure and molding method are not limited to the above. Alternatively, the protrusion may not be stamped on the base 1; instead, mounting through holes may be directly opened on the cover plate.

[0053] Furthermore, it is not limited to punching out the aforementioned reinforcing ribs 11 on the mounting groove 12. When the material is supplied, the reinforcing ribs 11 can be an independent structure from the base body 1. During assembly, the reinforcing ribs 11 can be installed into the mounting through holes of the base body 1 and connected by welding, etc.

[0054] In this embodiment, preferably, as follows: Figure 3 As shown, along the first preset direction a, the projected area of ​​the mounting through hole is greater than the opening area of ​​the explosion-proof valve 2. That is to say, when the reinforcing rib 11 has the mesh structure described below, the mesh reinforcing rib 11 is adapted to the mounting groove 12, that is, the entire projected area of ​​the mesh reinforcing rib 11 along the first preset direction a is greater than the opening area of ​​the explosion-proof valve 2.

[0055] Based on the structure described above, the projected area of ​​the mounting through hole is made larger than the opening area of ​​the explosion-proof valve 2 to ensure rapid venting in the event of battery thermal runaway.

[0056] In this embodiment, preferably, as follows: Figure 3 As shown, the reinforcing rib 11 is mesh-like, thus forming a reinforcing mesh structure.

[0057] As can be seen from the structure described above, the reinforcing rib 11 has a reinforcing mesh structure, which can greatly improve the deformation resistance of the explosion-proof valve 2 area compared with the non-mesh reinforcing rib 11. Moreover, the reinforcing rib 11 has an exhaust hole 113, which helps to exhaust the battery during thermal runaway.

[0058] In this embodiment, preferably, as follows: Figure 3As shown, the reinforcing rib 11 includes an outer ring rib plate 111 connected to each other and a plurality of reinforcing rib plates 112, and the plurality of reinforcing rib plates 112 are sequentially arranged in the outer ring rib plate 111 along the second preset direction b.

[0059] As can be seen from the structure described above, multiple reinforcing ribs 112 are arranged inside the outer ring rib 111, forming the aforementioned mesh structure, which has higher strength and stronger resistance to deformation.

[0060] It should be noted that in this embodiment, the explosion-proof valve 2 is waist-shaped, and the second preset direction b is preferably the length direction of the explosion-proof valve 2, but of course, it is not limited to this.

[0061] In this embodiment, preferably, as follows: Figure 3 As shown, one end of any two adjacent reinforcing ribs 112 intersects to form a V-shaped structure.

[0062] As can be seen from the structure described above, any V-shaped structure combined with the outer ring stiffener 111 forms multiple triangular reinforcing structures arranged sequentially along the second preset direction b. The triangular reinforcing structures have higher stability and stronger resistance to deformation.

[0063] It should be noted that the structure of the reinforcing rib 11 is not limited to the above, and it can also have other structures, such as a lattice structure. Of course, the structure of the reinforcing rib 11 is not limited to a mesh structure. For example, the reinforcing rib 11 may include multiple reinforcing rib plates 112, which are sequentially arranged in the mounting through holes along the second preset direction b. In this case, along the second preset direction b, each reinforcing rib plate 112 has exhaust through holes 113 formed on both sides.

[0064] In this embodiment, preferably, the thickness of the reinforcing rib 11 is a along the first preset direction a, and a≥0.01mm.

[0065] Based on the structure described above, it can be seen that if the reinforcing rib 11 is too thin, it is easy to deform and will not be able to provide good resistance to deformation. Therefore, the thickness a of the reinforcing rib 11 is taken within the range of greater than or equal to 0.01 mm.

[0066] Furthermore, preferably, 0.1≤a≤3mm. If the reinforcing rib 11 is too thick, it will increase the cost and occupy the space of the explosion-proof valve 2, and it will not be conducive to exhaust. If the reinforcing rib 11 is too thin, the problems have been introduced above. Therefore, a is set to a value in the range of 0.1-0.3mm.

[0067] In this embodiment, preferably, the reinforcing rib 11 does not protrude from the inner surface of the base 1 along the second preset direction b.

[0068] As can be seen from the structure described above, by ensuring that the reinforcing rib 11 does not protrude from the inner surface of the base 1, interference between the reinforcing rib 11 and the lower plastic and other structures on the inner side of the cover plate can be effectively avoided.

[0069] In this embodiment, preferably, as follows: Figure 1 As shown, there is one explosion-proof valve 2, and correspondingly, there is also one reinforcing rib 11. Of course, it is not limited to this. There can also be multiple explosion-proof valves 2. When there are multiple explosion-proof valves 2, there are also multiple reinforcing ribs 11, which correspond one-to-one with the multiple explosion-proof valves 2.

[0070] Example 2

[0071] Embodiment 2 of this application also provides a battery including the explosion-proof valve support assembly described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the explosion-proof valve support assembly. The same technical features and beneficial effects will not be repeated here.

[0072] It should be noted that: such as Figure 1 The base 1 of the explosion-proof valve bearing assembly can be the battery casing. When the base 1 is the battery casing, the casing is rectangular, and the explosion-proof valve 2 is installed on the narrow side of the casing, that is, the side formed by the long side and the wide side. In addition, it should be noted that the casing is not limited to having openings at both ends along its length, that is, it is not limited to having a structure with four sides. Other structures can also be used. For example, the casing can be open at only one end, that is, the casing has five sides. The base 1 of the explosion-proof valve bearing assembly can also be the battery cover (not shown in the figure), which can be selected according to actual needs.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A bearing assembly for an explosion-proof valve, characterized in that, include: A substrate and an explosion-proof valve; wherein the explosion-proof valve is mounted on the substrate, and along a first preset direction, the substrate is formed with reinforcing ribs located inside and / or outside the explosion-proof valve; Along the first preset direction, the substrate has a mounting through hole that extends through its inner and outer sides. The reinforcing rib is disposed in the mounting through hole, such that a portion of the electrode group away from the battery forms a mounting groove that opens outward along the first preset direction. The explosion-proof valve is installed in the mounting groove.

2. The explosion-proof valve bearing assembly according to claim 1, characterized in that, The substrate has an annular reinforcing protrusion located on the outer periphery of the mounting groove.

3. The explosion-proof valve bearing assembly according to claim 2, characterized in that, Along the first preset direction, the height of the annular reinforcing protrusion relative to the substrate is h, and h ≥ 0.01 mm; and / or The annular reinforcing protrusion is disposed on the outer side of the substrate; and / or Along the first preset direction, the projected area of ​​the mounting through hole is larger than the opening area of ​​the explosion-proof valve.

4. The explosion-proof valve bearing assembly according to claim 1, characterized in that, The reinforcing ribs are in the form of a mesh.

5. The explosion-proof valve bearing assembly according to claim 4, characterized in that, The reinforcing rib includes an outer ring rib plate connected to each other and a plurality of reinforcing rib plates, and the plurality of reinforcing rib plates are sequentially arranged in the outer ring rib plate along a second preset direction.

6. The explosion-proof valve bearing assembly according to claim 5, characterized in that, Any two adjacent reinforcing ribs are arranged in parallel; or One end of any two adjacent reinforcing ribs intersects to form a V-shaped structure; or The extensions of any two adjacent reinforcing ribs intersect to form a V-shaped structure.

7. The explosion-proof valve bearing assembly according to claim 1, characterized in that, Along the first preset direction, the thickness of the reinforcing rib is a, and a≥0.01mm.

8. The explosion-proof valve bearing assembly according to any one of claims 1 to 7, characterized in that, Vent holes are provided on the reinforcing rib and / or on the side of the reinforcing rib, communicating with the inner and outer sides of the base along the first preset direction; and / or The reinforcing ribs are arranged on the base by welding or stamping; and / or Along the first preset direction, the reinforcing rib does not protrude from the inner surface of the substrate.

9. A battery, characterized in that, Includes the explosion-proof valve carrier assembly as described in any one of claims 1 to 8.

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