Battery cover plate structure, battery and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery cover plate structure, a battery and electric equipment. The battery cover plate structure comprises a base body, a sealing body and an extension body, a sealing hole is formed in the base body; the extension body is connected to the base body, and a channel communicated with the sealing hole is formed in the extension body; the extension body comprises a limiting convex part and a limiting section; the limiting convex part is arranged in a manner of protruding towards the channel; and the sealing body is arranged between the limiting section and the limiting convex part and is sealed in the channel. The stability and the sealing performance of the cover plate structure can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a battery cover plate structure, a battery and an electrical device. Background Art

[0002] Lithium batteries have the advantages of light weight, high capacity, long life, low self-discharge rate, no memory effect, no pollution, etc., especially power lithium batteries are widely used in electric bicycles, electric hardware tools and other equipment. These equipment require batteries with large capacity and high power, and power lithium batteries have certain advantages in this regard. Aluminum shell lithium batteries are generally equipped with sealing ports and sealing nails; the sealing nails are used to seal the sealed battery cells.

[0003] However, most of the sealing pins of existing aluminum shell lithium batteries are sealed and connected to the sealing holes by gluing, welding or riveting; the operation of this method is relatively complicated and can easily cause deformation of the cover plate and the sealing hole, resulting in poor sealing performance of the assembly and leakage, which affects the normal use of the battery. Utility Model Content

[0004] The purpose of the utility model is to provide a battery cover structure, a battery and an electrical device to improve the stability and sealing performance of the cover structure in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A battery cover structure comprises a base, a sealing body and an extension body; the base is provided with a sealing hole; the extension body is connected to the base and is provided with a channel connected with the sealing hole; the extension body comprises a limiting protrusion and a limiting section; the limiting protrusion is arranged to protrude toward the channel; the sealing body is arranged between the limiting section and the limiting protrusion and is sealed in the channel.

[0007] Preferably: the extension body further includes a first connecting section; one end of the first connecting section is connected to the limiting protrusion; the other end of the first connecting section is connected to the limiting section.

[0008] Preferably: when the sealing hole is in a pre-sealing state, the limiting section and the base are arranged in a straight line;

[0009] When the sealing hole is in a sealed state, the limiting section is bent between the base body; and the limiting section is bent toward the inside of the channel; and one end of the limiting section abuts against the sealing body.

[0010] Preferably, the bottom of the limiting section abuts against the sealing body.

[0011] Preferably: the battery cover structure further comprises a pole; the pole is connected to the base; and one end of the pole is arranged to pass through the interior of the base; and the other end of the pole is arranged to pass through the exterior of the base.

[0012] Preferably, the relationship between the height h1 of the extension body when the limiting section is in the pre-sealing state and the height H of the pole extending beyond the outside of the base body satisfies: h1≤H*120%;

[0013] And / or, the relationship between the height h2 of the extension body when the limiting section is in a sealed state and the height H of the pole extending beyond the outside of the base body satisfies: h2≤H*90%.

[0014] Preferably: a groove is provided at one end of the limiting protrusion away from the channel;

[0015] A filling component is arranged in the groove.

[0016] Preferably: the sealing body comprises a metal layer and a sealing layer connected to the metal layer;

[0017] In which, the sealing layer is coated on the outer surface of the metal layer; and one side end of the sealing layer is sealed and connected to the limiting protrusion; the other end of the sealing layer abuts against the limiting section; and / or, the metal layer and the sealing layer are stacked, the metal layer is arranged between two adjacent sealing layers; and the metal layer abuts against the limiting section; the sealing layer is sealed and connected to the limiting protrusion.

[0018] The utility model also discloses a battery, comprising the battery cover plate structure described above.

[0019] The utility model also discloses an electrical device, comprising the battery mentioned above.

[0020] The beneficial effect of the utility model lies in that the technical solution forms a limiting gap by adopting a limiting section and a limiting protrusion, so that the channel and the sealing hole are sealed and assembled by the sealing body in the sealed state, thereby achieving a rapid sealing effect, and its sealing effect is better, and it can also avoid operations such as welding, gluing, riveting, etc. and the disadvantages brought by them; thereby improving the stability of the cover plate structure, reducing additional complex assembly operations and improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following will refer to the attached Figures 1 to 3 To describe the features, advantages and technical effects of exemplary embodiments of the present utility model.

[0022] Figure 1 This is a schematic structural diagram of a battery cover structure according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic structural diagram of a battery cover structure according to an embodiment of the utility model;

[0024] Figure 3 The figure is a schematic structural diagram of a battery cover structure according to an embodiment of the present utility model.

[0025] In the figure: 1-substrate; 2-sealing body; 21-metal layer; 22-sealing layer; 3-sealing hole; 4-extension body; 40-channel; 401-limiting gap; 41-second connecting section; 42-limiting protrusion; 421-groove; 422-filling component; 43-first connecting section; 44-limiting section; 5-pole. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship between the battery cover structure, the battery, and the electrical equipment to describe the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are an "or" relationship between a battery cover structure, a battery, and an electrical equipment.

[0030] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0031] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0032] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] The following is combined with Figure 1 to Figure 3 The utility model is further described in detail, but it is not intended to limit the utility model.

[0034] like Figure 1 As shown, in one embodiment of the utility model, the battery cover structure includes a base 1, a sealing body 2 and an extension body 4; a sealing hole 3 is provided in the base 1; the extension body 4 is connected to the base 1, and is provided with a channel 40 connected to the sealing hole 3; the extension body 4 includes a limiting protrusion 42 and a limiting section 44; the limiting protrusion 42 is arranged to protrude toward the channel 40; the sealing body 2 is arranged between the limiting section 33 and the limiting protrusion 42, and is sealed in the channel 40.

[0035] The technical solution of the utility model adopts a limiting gap formed by a limiting section and a limiting convex part, so that the channel and the sealing hole can be sealed and assembled by the sealing body in the sealed state, thereby achieving a rapid sealing effect, and its sealing effect is better, and it can also avoid operations such as welding, gluing, riveting and the like and the disadvantages brought about by them; thereby improving the stability of the cover plate structure, reducing additional complex assembly operations and improving the sealing performance.

[0036] Specifically, in some embodiments, Figure 1 and2 As shown, the limiting protrusion 42 is in the shape of an arc. Figure 2 As shown, a groove 421 is provided at one end of the limiting protrusion 42 away from the channel 40; the structure is directly pushed from the outside to the inside during the processing to form the outer groove 421 and the inner limiting protrusion 42, thereby improving the processing efficiency and ensuring the support and limiting performance. Figure 3 As shown, a filling component 422 is provided in the groove 421; the material of the filling component 422 is consistent with the limiting protrusion 42; further, the filling component 422 and the limiting protrusion 42 are integrally formed; that is, the supporting stability of the limiting protrusion 42 can be improved through the solid structure of the filling component 422 and the limiting protrusion 42, thereby effectively improving the supporting sealing performance of the sealing body 2.

[0037] Specifically, in some embodiments, Figure 3 As shown, the sealing body 2 includes a metal layer 21 and a sealing layer 22 connected to the metal layer 21. In some embodiments, the metal layer 21 is made of aluminum and its alloy material or copper and its copper alloy material; the sealing layer 22 is made of rubber material. Figure 3 As shown, the sealing layer 22 is coated on the outer surface of the metal layer 21; and one side end of the sealing layer 22 is sealed and connected to the limiting protrusion 42; the other end of the sealing layer 22 is abutted against the limiting section 44; the structure can improve the sealing performance and prevent the metal layer 21 from being corroded and damaged by the outside world on the premise of ensuring the support stability through the metal layer 21 and the sealing layer 22 of the fully enclosed design. Further (not shown in the figure), the metal layer 21 and the sealing layer 22 are stacked, the number of the sealing layers 22 is at least two, the number of the metal layer 21 is at least one, and the metal layer 21 is arranged between two adjacent sealing layers 22; and the metal layer 21 is abutted against the limiting section 44; the sealing layer 22 is sealed and connected to the limiting protrusion 42. This structure can achieve the sealing performance of the channel 40 at the limiting protrusion 42, and can also achieve the assembly stability between the limiting section 44.

[0038] Among them, Figure 3 As shown, a limiting gap 401 is provided between the sealing body 2 and the extension body 4; that is, Figure 2 As shown, the relationship between the diameter d1 of the sealing body 2 and the inner diameter d2 of the channel 40 satisfies: d2-d1=(0.05mm-0.15mm). That is, the reasonable size difference between the sealing body 2 and the extension body 4 can ensure the smoothness of the device and achieve its sealing performance.

[0039] Specifically, in some embodiments, Figure 1As shown, the extension body 4 further includes a first connecting section 43; one end of the first connecting section 43 is connected to the limiting protrusion 42; and the other end of the first connecting section 43 is connected to the limiting section 44. Figure 1 As shown, when the sealing hole 3 is in the pre-sealing state, the limiting section 44 and the first connecting section 43 are arranged in a straight manner; when the sealing hole 3 is in the sealing state, the limiting section 44 and the first connecting section 43 are arranged in a bent manner; and the limiting section 44 is arranged in a bent manner toward the inside of the channel 40; one end of the limiting section 44 abuts against the sealing body 2. In other words, when the sealing hole 3 is in the pre-sealing state, the limiting section 44 remains in a relatively straight state to avoid the limiting section 44 hindering the smoothness of the sealing operation; when the sealing is completed, the limiting section 44 is bent into the channel 40, and the sealing effect is further achieved through the limiting effect of the limiting section 44 and the limiting protrusion 42 in combination with the sealing method of the sealing body 2, and the operation and the disadvantages of welding, gluing, riveting and the like are avoided.

[0040] Specifically, in some embodiments, Figure 1 and 2 As shown, the extension body 4 further includes a second connecting section 41; one end of the second connecting section 41 is connected to the limiting protrusion 42; and the other end of the second connecting section 41 is connected to the base 1. The structure can ensure the stability of the structure through the multi-section extension body 4, thereby effectively improving the sealing performance of the sealing hole.

[0041] Specifically, in some embodiments, Figure 2 As shown, the battery cover structure also includes a pole 5; the pole 5 is connected to the substrate 1; and one end of the pole 5 is arranged to pass through the interior of the substrate 1; the other end of the pole 5 is arranged to pass through the exterior of the substrate 1. The relationship between the height h1 of the extension body 4 when the limiting section 44 is in the pre-sealing state and the height H of the pole 5 extending beyond the exterior of the substrate 1 satisfies: h1≤H*120%; the relationship between the height h2 of the extension body 4 when the limiting section 44 is in the sealing state and the height H of the pole 5 extending beyond the exterior of the substrate 1 satisfies: h2≤H*90%. This structure can prevent the pole 5 and the sealing hole 3 from being short-circuited during charging and discharging, causing the substrate 1 to be charged, thereby causing corrosion of the substrate 1, by having a reasonable height difference between the pole 5 and the extension body 4.

[0042] The utility model also proposes a battery, which includes a battery cover structure. The specific structure of the battery cover structure refers to the above-mentioned embodiment. Since the battery adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0043] Among them, battery refers to a cup, trough or other container or part of the space of a composite container that contains electrolyte solution and metal electrodes to generate electric current. It is a device that can convert chemical energy into electrical energy. The battery has a positive electrode and a negative electrode.

[0044] The utility model also proposes an electrical device, which includes a battery. The specific structure of the battery refers to the above embodiment. Since the electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0045] Among them, the electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles and spacecrafts, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. The embodiments of the present application do not impose special restrictions on the above-mentioned electrical equipment.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0047] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A battery cover structure, characterized in that: It includes a base body, a sealing body and an extension body; the base body is provided with a sealing hole; the extension body is connected to the base body and is provided with a channel connected with the sealing hole; the extension body includes a limiting protrusion and a limiting section; the limiting protrusion is arranged to protrude toward the channel; the sealing body is arranged between the limiting section and the limiting protrusion, and is sealed in the channel.

2. The battery cover structure according to claim 1, characterized in that: The extension body further includes a first connecting section; one end of the first connecting section is connected to the limiting protrusion; and the other end of the first connecting section is connected to the limiting section.

3. The battery cover structure according to claim 1 or 2, characterized in that: When the sealing hole is in a pre-sealing state, the limiting section and the base are arranged in a straight line; When the sealing hole is in a sealed state, the limiting section is bent between the base body; and the limiting section is bent toward the inside of the channel; and one end of the limiting section abuts against the sealing body.

4. The battery cover structure according to claim 2, characterized in that: The limiting section abuts against the sealing body.

5. The battery cover structure according to claim 1, characterized in that: The battery cover structure also includes a pole; the pole is connected to the base; and one end of the pole is arranged to pass through the interior of the base; the other end of the pole is arranged to pass through the exterior of the base.

6. The battery cover structure according to claim 5, characterized in that: The relationship between the height h1 of the extension body when the limiting section is in the pre-sealing state and the height H of the pole extending beyond the outside of the base body satisfies: h1≤H*120%; And / or, the relationship between the height h2 of the extension body when the limiting section is in the sealed state and the height H of the pole extending beyond the outside of the base body satisfies: h2≤H*90%.

7. The battery cover structure according to claim 1, characterized in that: The end of the limiting protrusion away from the channel is provided with a groove; A filling component is arranged in the groove.

8. The battery cover structure according to claim 1, characterized in that: The sealing body comprises a metal layer and a sealing layer connected to the metal layer; In which, the sealing layer is coated on the outer surface of the metal layer; and one side end of the sealing layer is sealed and connected to the limiting protrusion; the other end of the sealing layer abuts against the limiting section; and / or, the metal layer and the sealing layer are stacked, the metal layer is arranged between two adjacent sealing layers; and the metal layer abuts against the limiting section; the sealing layer is sealed and connected to the limiting protrusion.

9. A battery, characterized in that: The battery cover structure comprises the battery cover structure as described in any one of claims 1 to 8.

10. An electrical equipment, characterized in that: A battery comprising the battery as claimed in claim 9.

Images