Battery structure, battery and electrical equipment

Abstract

The utility model is applicable to the technical field of batteries, and provides a battery structure, a battery and electrical equipment, the battery structure comprises a shell, and the shell is provided with an accommodating space; the electrode assembly is arranged in the accommodating space; and the gasket is arranged between the bottom of the electrode assembly and the inner surface of the bottom of the shell, and the gasket is provided with a convex hull. Through the arrangement, the convex hulls are additionally arranged on the gasket, the convex hulls replace the supporting and insulating effects of an insulating gasket, meanwhile, the hot melting or rubberizing process is omitted, the assembly difficulty is reduced, and the cost is reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a battery structure, battery and electrical device. Background Technology

[0002] Currently, the electrode assembly of the battery is located inside the battery casing. At the same time, the outside of the electrode assembly is wrapped with an insulating layer, which isolates the electrode assembly from the battery casing and plays an insulating role.

[0003] Existing batteries on the market will further provide an insulating pad between the bottom of the insulating layer and the inner surface of the bottom of the battery casing. The bottom of the insulating layer and the insulating pad are connected by heat fusion. The insulating pad supports the electrode assembly, so that the electrode assembly is away from the battery casing by a certain distance, thereby ensuring the insulation effect.

[0004] However, adding insulating pads increases the cost of the battery and complicates installation. Utility Model Content

[0005] This application provides a battery structure designed to address the problem that existing batteries using insulating pads result in high costs and complex installation.

[0006] This application provides a battery structure as follows:

[0007] The shell, which has a containing space;

[0008] Electrode assembly, the electrode assembly being disposed within the receiving space; and

[0009] A gasket is disposed between the bottom of the electrode assembly and the inner surface of the bottom of the housing, and the gasket has a convex bulge.

[0010] Furthermore, the height of the convex hull is 0.1mm to 10mm.

[0011] Furthermore, at least part of the convex hull is an inwardly convex hollow hull that protrudes toward the electrode assembly.

[0012] Furthermore, at least part of the bulge is an outwardly convex hollow bulge that protrudes towards the shell.

[0013] Furthermore, the convex hull includes at least one of the following: bar, circle, triangle, polygon, irregular shape, and grid-like structure connected as a whole.

[0014] Furthermore, it also includes an insulating sheet, which is connected to a gasket to encase the electrode assembly.

[0015] Furthermore, the insulating sheet and the gasket are integrally formed.

[0016] Furthermore, it also includes an end cap, with an opening at the top of the housing, and the end cap sealing the opening.

[0017] Secondly, this application also provides a battery, including the battery structure as described above.

[0018] Thirdly, this application also provides an electrical device, including the battery as described above.

[0019] The beneficial effects of this application are as follows: The battery structure provided by this application includes a housing with a receiving space; an electrode assembly disposed within the receiving space; and a gasket disposed between the bottom of the electrode assembly and the inner surface of the bottom of the housing, the gasket having a protrusion. Through the above arrangement, by adding a protrusion to the gasket, the protrusion replaces the supporting and insulating effect of the insulating gasket, while eliminating the need for hot-melt or adhesive bonding processes, reducing assembly difficulty and cost. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the disassembled structure of a battery in the prior art;

[0021] Figure 2 This is a cross-sectional schematic diagram of a battery in the prior art;

[0022] Figure 3 yes Figure 2 An enlarged schematic diagram of part A1 in the middle;

[0023] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the battery structure provided in this application;

[0024] Figure 5 yes Figure 4 Enlarged schematic diagram of section A2;

[0025] Figure 6 This is a cross-sectional schematic diagram of the convex inner bulge of the insulating layer in one embodiment of the battery structure provided in this application;

[0026] Figure 7 yes Figure 6 Enlarged diagram of section A3 in the middle;

[0027] Figure 8 This is a cross-sectional schematic diagram showing the convex bulge of the insulating layer in one embodiment of the battery structure provided in this application;

[0028] Figure 9 yes Figure 8 Enlarged diagram of section A4;

[0029] Figure 10 This is a schematic diagram of the convex hull of the insulating layer in one embodiment of the battery structure provided in this application;

[0030] Figure 11 This is a schematic diagram of the convex hull of the insulating layer in another embodiment of the battery structure provided in this application.

[0031] Explanation of reference numerals in the attached drawings: 100-housing, 200-electrode assembly, 300-insulating layer, 310-gasket, 311-convex bulge, 320-insulating sheet, 400-end cap, 500-insulating gasket. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. Examples of 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 are only used to explain this application, and should not be construed as limiting this application. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0033] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this application.

[0034] 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. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. 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 this application. Furthermore, reference values ​​and / or reference 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, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] The battery structure provided in this application includes a housing with a receiving space; an electrode assembly disposed within the receiving space; and a gasket disposed between the bottom of the electrode assembly and the inner surface of the bottom of the housing, the gasket having a protrusion. Through this configuration, by adding a protrusion to the gasket, the protrusion replaces the supporting and insulating effect of the insulating gasket, while eliminating the need for hot-melt or adhesive bonding processes, reducing assembly difficulty and cost.

[0039] like Figures 4 to 11 As shown, one embodiment of this application provides a battery structure, including:

[0040] Housing 100, housing 100 having a receiving space;

[0041] Electrode assembly 200, the electrode assembly 200 being disposed within the receiving space; and

[0042] Gasket 310 is disposed between the bottom of electrode assembly 200 and the inner surface of the bottom of housing 100, and gasket 310 is provided with protrusion 311.

[0043] In traditional battery structures, such as Figure 1As shown, the battery includes an electrode assembly 200, a housing 100, and an insulating layer 300. The electrode assembly 200 is disposed inside the housing 100, and the electrode assembly 200 is wrapped with an insulating layer 300, which isolates the electrode assembly 200 from the battery casing, thus providing insulation. An insulating gasket 500 is disposed between the bottom of the insulating layer 300 and the inner surface of the bottom of the housing 100. Figure 2 and Figure 3 As shown, the bottom of the insulating layer 300 is connected to the insulating pad 500 by heat fusion. The insulating pad 500 supports the electrode assembly 200, keeping it a distance away from the battery casing 100, thus ensuring insulation. However, adding the insulating pad 500 in the traditional solution results in higher battery costs and complicated installation.

[0044] like Figures 4 to 11 As shown, the housing 100 and electrode assembly 200 provided in this application can refer to the housing 100 and electrode assembly 200 in the above-mentioned conventional solutions. The housing 100 refers to the battery case. Generally, the housing 100 is container-shaped, such as a cylindrical container, a square container, etc., without limitation.

[0045] The housing 100 is hollow to form a receiving space for accommodating the electrode assembly 200. The electrode assembly 200 refers to the component in the battery that undergoes a redox reaction with the electrolyte solution. The electrode assembly 200 includes a positive electrode and a negative electrode. The electrode assembly 200 can be metal or non-metal, as long as it can exchange electrons with the electrolyte solution, and there is no limitation.

[0046] The gasket 310 can be considered as a thin sheet that elevates the electrode assembly 200. During assembly, the gasket 310 is first placed inside the housing 100, and then the electrode assembly 200 is placed inside the housing 100. The gasket 310 isolates the bottom of the electrode assembly 200 from the bottom of the inner surface of the housing 100. Because the gasket 310 is provided with a protrusion 311, the protrusion 311 can support the gasket 310, thereby supporting the electrode assembly 200, so that the electrode assembly 200 is away from the housing 100 by a certain distance, ensuring the support and insulation effect.

[0047] Optionally, gasket 310 may be made of PE (polyethylene), PP (polypropylene) or other materials with insulating and protective functions, without limitation.

[0048] In some possible embodiments, the gasket 310 may be made of a single-layer PE film, a single-layer PP film, a multi-layer PE film, or a multi-layer PP film, without limitation.

[0049] In some embodiments, the height of the convex bulge 311 is 0.1mm to 10mm. For example, the height of the convex bulge 311 is any value among 0.2mm, 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 0.1mm to 10mm, without limitation.

[0050] As one possible implementation, the gasket 310 has multiple protrusions 311, wherein at least some of the protrusions 311 are inwardly convex hollow bulges protruding toward the electrode assembly 200, that is, some of the protrusions 311 are inner protrusions 311, such as... Figure 6 and Figure 7 As shown. Similarly, at least part of the convex hull 311 is an outwardly convex hollow hull protruding towards the housing 100, that is, part of the convex hull 311 is an outwardly convex hull 311, such as... Figure 8 and Figure 9 As shown.

[0051] In some embodiments, the convex hull 311 includes at least one of the following: strip, circle, triangle, polygon, irregular shape, and grid-like structure connected as a whole. Figure 10 and Figure 11 As shown, no limitations are imposed.

[0052] The battery structure provided in this application includes a housing 100 having a receiving space; an electrode assembly 200 disposed within the receiving space; and a gasket 310 disposed between the bottom of the electrode assembly 200 and the inner surface of the bottom of the housing 100, the gasket 310 having a protrusion 311. Through this configuration, by adding the protrusion 311 to the gasket 310, the protrusion 311 replaces the supporting and insulating effect of the insulating gasket 500, while eliminating the need for hot-melt or adhesive bonding processes, reducing assembly difficulty and cost.

[0053] In some embodiments, the battery structure provided in this application further includes an insulating sheet 320, which is connected to a pad 310 for wrapping the electrode assembly 200.

[0054] The insulating sheet 320 and the gasket 310 form an insulating layer 300 for wrapping the electrode assembly 200. The insulating sheet 320 is attached to the side of the electrode assembly 200, and the gasket 310 is attached to the bottom of the electrode assembly 200. Therefore, the insulating sheet 320 and the gasket 310 can be regarded as a separator between the housing 100 and the electrode assembly 200. That is, the insulating sheet 320 and the gasket 310 isolate the housing 100 and the electrode assembly 200 so that electrons in the battery cannot pass through freely, while ions in the electrolyte can pass freely between the positive and negative electrodes, so as to ensure the performance and safety of the battery.

[0055] Furthermore, the insulating sheet 320 and the gasket 310 are integrally formed, which can effectively ensure the insulation protection function between the housing 100 and the electrode assembly 200.

[0056] In some embodiments, the battery structure provided in this application further includes an end cap 400, the top of the housing 100 has an opening, and the end cap 400 is disposed to seal the opening.

[0057] The housing 100 is shaped like a container with an open top. The opening at the top of the housing 100 is sealed by the end cap 400. The specific structure and implementation principle can be referred to the structure and implementation principle of the end cap 400 and the housing 100 in the above-mentioned traditional scheme, and will not be elaborated here.

[0058] In some embodiments, this application also provides a battery, including the battery structure as described above.

[0059] In practice, the battery may also include other structural components, such as power terminals, current collectors, or other components. For example, the power terminals include a positive terminal and a negative terminal disposed on the end cover 400. The positive terminal is connected to the positive electrode assembly 200, and the negative terminal is connected to the negative electrode terminal. Further details are omitted.

[0060] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the structure and implementation principle of the battery described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.

[0061] The battery structure provided in this application includes a housing 100 having a receiving space; an electrode assembly 200 disposed within the receiving space; and a gasket 310 disposed between the bottom of the electrode assembly 200 and the inner surface of the bottom of the housing 100, the gasket 310 having a protrusion 311. Through this configuration, by adding the protrusion 311 to the gasket 310, the protrusion 311 replaces the supporting and insulating effect of the insulating gasket 500, while eliminating the need for hot-melt or adhesive bonding processes, reducing assembly difficulty and cost.

[0062] In some embodiments, an electrical device is also provided, including a battery as described above.

[0063] When implemented, electrical equipment includes, but is not limited to, communication equipment, smart devices, power supplies, or related components used in automotive electrical equipment, medical equipment, and household appliances.

[0064] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the structure and implementation principle of the electrical equipment described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.

[0065] The battery structure provided in this application includes a housing 100 having a receiving space; an electrode assembly 200 disposed within the receiving space; and a gasket 310 disposed between the bottom of the electrode assembly 200 and the inner surface of the bottom of the housing 100, the gasket 310 having a protrusion 311. Through this configuration, by adding the protrusion 311 to the gasket 310, the protrusion 311 replaces the supporting and insulating effect of the insulating gasket 500, while eliminating the need for hot-melt or adhesive bonding processes, reducing assembly difficulty and cost.

[0066] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery structure, characterized by, The battery structure comprises: a housing having a containing space; an electrode assembly disposed in the containing space; and a gasket disposed between the bottom of the electrode assembly and the inner surface of the bottom of the housing, the gasket being provided with a convex. The height of the convex is 0.1mm-10mm.

2. The battery structure of claim 1, wherein, At least part of the convex is an inner convex hollow convex protruding towards the electrode assembly.

3. The battery structure according to claim 1 or 2, wherein At least part of the convex is an outer convex hollow convex protruding towards the housing.

4. The battery structure according to claim 1 or 2, wherein The convex comprises at least one of a strip, a circle, a triangle, a polygon, an irregular figure and a grid connected as a whole.

5. The battery structure of claim 1, wherein Further comprising an insulating sheet connected with the gasket for wrapping the electrode assembly.

6. The battery structure of claim 1, wherein, The insulating sheet and the gasket are integrally formed.

7. The battery structure of claim 6, wherein Further comprising an end cover, the top of the housing having an opening, the end cover being disposed to seal the opening.

8. The battery structure of claim 1, wherein, The battery structure as claimed in any one of claims 1-8.

9. A battery, characterized by The battery as claimed in claim 9.

10. An electrical appliance characterized by ​

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