Insulating components for batteries and batteries

Abstract

This utility model discloses an insulating component for a battery and a battery. The insulating component includes an insulating body disposed between the battery casing and the battery cell, and surrounding the outer periphery of the positive electrode of the battery cell. A leakage hole penetrating through the thickness direction is formed on the insulating body. According to this utility model, by surrounding the positive electrode of the battery cell with the insulating body, contact between the positive electrode and the battery casing is prevented, thus avoiding internal short circuits. Simultaneously, the leakage hole on the insulating body allows the electrolyte inside the insulating body to flow out and participate in the charging and discharging process of the battery, improving the battery's energy density and lifespan.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an insulating component for batteries and a battery. Background Technology

[0002] In related technologies, to prevent short circuits caused by direct contact between the positive and negative electrodes inside the battery, an insulating component is generally installed between the battery casing and the positive electrode of the cell. However, during the electrolyte injection process, some electrolyte may seep into the insulating component. The electrolyte inside the insulating component does not participate in the charging and discharging process of the battery in subsequent stages, thus losing its function and inevitably reducing the battery's mass energy density and service life. Utility Model Content

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an insulating component for batteries. According to this invention, the insulating component wraps the outer periphery of the positive electrode of the battery cell, preventing the positive electrode from contacting the battery casing and avoiding internal short circuits. Simultaneously, a leakage hole is provided on the insulating component, allowing the electrolyte inside the insulating component to flow out and participate in the battery's charging and discharging process, thereby improving the battery's energy density and lifespan.

[0004] This utility model also proposes a battery having the above-mentioned insulating component.

[0005] The insulating component for a battery according to the present invention includes: an insulating body disposed between the battery casing and the battery cell and wrapped around the outer periphery of the positive electrode of the battery cell, wherein a leakage hole penetrating in the thickness direction is formed on the insulating body.

[0006] The insulating component of this utility model wraps the insulating body around the outer periphery of the positive electrode of the battery cell, preventing the positive electrode of the battery cell from contacting the battery casing and avoiding internal short circuit accidents. At the same time, a leakage hole is provided on the insulating body, through which the electrolyte inside the insulating body can flow out and participate in the charging and discharging process of the battery. In addition, the leakage hole can also reduce the weight of the insulating body, reduce the amount of material used in the insulating body, reduce manufacturing costs, and improve the energy density and service life of the battery.

[0007] According to some embodiments of the present invention, the insulating body includes: a bottom wall disposed between the bottom wall of the battery casing and the positive electrode of the battery cell; and a side wall surrounding the outer periphery of the bottom wall and located between the battery cell and the side wall of the battery casing.

[0008] According to some embodiments of the present invention, a matching hole suitable for the positive electrode of the battery cell to pass through is formed on the bottom wall.

[0009] According to some embodiments of the present invention, the matching hole is constructed as a circular hole.

[0010] According to some embodiments of this utility model, the insulating body is provided with weight reduction holes.

[0011] According to some embodiments of the present invention, the leakage holes are configured in multiple ways and are disposed on the bottom wall.

[0012] According to some embodiments of the present invention, a plurality of the leakage holes are arranged around the outer periphery of the matching hole.

[0013] According to some embodiments of this utility model, the leakage hole is constructed as an elongated hole.

[0014] According to some embodiments of this utility model, the insulating component is constructed of plastic.

[0015] The battery according to this utility model is briefly described below.

[0016] The battery according to this utility model is provided with an insulating element as described in any one of the above embodiments. Because the battery according to this utility model is provided with an insulating element as described in any one of the above embodiments, the battery according to this utility model has better safety and higher reliability during operation.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the fit between the insulating body and the battery casing according to one embodiment of the present utility model;

[0020] Figure 2 This is a side view of an insulating body according to an embodiment of the present invention;

[0021] Figure 3 This is a front view of the bottom wall of the insulating body according to an embodiment of the present invention.

[0022] Figure label:

[0023] 100. Insulating components;

[0024] 11. Bottom wall; 12. Side wall; 13. Leakage hole; 14. Matching hole;

[0025] 21. Battery casing. Detailed Implementation

[0026] 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In related technologies, to prevent short circuits caused by direct contact between the positive and negative electrodes inside the battery, an insulating component is generally installed between the battery casing and the positive electrode of the cell. However, during the electrolyte injection process, some electrolyte may seep into the insulating component. The electrolyte inside the insulating component does not participate in the charging and discharging process of the battery in subsequent stages, thus losing its function and inevitably reducing the battery's mass energy density and service life.

[0028] The following is for reference. Figures 1-3 Description of an insulating component for a battery according to an embodiment of the present invention.

[0029] The insulating component 100 for a battery according to the present invention includes: an insulating body, which is disposed between the battery casing 21 and the battery cell and wraps around the outer periphery of the positive electrode of the battery cell, wherein a leakage hole 13 penetrating in the thickness direction is formed on the insulating body.

[0030] In some specific embodiments, cylindrical batteries generally employ a full-tab welding method, where the positive and negative tabs are welded to their respective current collectors. The positive current collector is welded to the cell terminal, and the negative current collector is welded to the casing. In other words, the terminal serves as the positive electrode of the cell, and the casing serves as the negative electrode. An insulating body is provided within the insulating component 100. This insulating body is positioned between the battery casing 21 and the cell, completely enclosing the outer periphery of the positive electrode of the cell. This isolates the positive electrode of the cell from direct contact with the end casing and also prevents direct contact between the positive electrode of the cell and the side of the casing. This effectively prevents direct contact between the positive and negative electrodes, avoids short-circuit accidents, and improves the safety and reliability of the battery during operation. A leakage hole 13 penetrating through the thickness direction is also provided. Since some electrolyte inevitably enters the interior of the insulating body during the electrolyte injection process and accumulates inside the insulating body, thus failing to participate in the charging and discharging process of the battery, the leakage hole 13 on the insulating body allows the electrolyte inside the insulating body to flow out through the leakage hole 13, enabling the electrolyte inside the insulating body to participate in the charging and discharging process of the battery and be effectively recycled, thereby improving the energy density and service life of the battery. In addition, the leakage hole 13 can also reduce the weight of the insulating body, reduce the amount of material used in the insulating body, reduce manufacturing costs, and improve the energy density of the battery.

[0031] The insulating component 100 of this utility model wraps the insulating body around the outer periphery of the positive electrode of the battery cell, preventing the positive electrode of the battery cell from contacting the battery casing 21 and avoiding the occurrence of internal short circuit accidents in the battery. At the same time, a leakage hole 13 is provided on the insulating body, through which the electrolyte inside the insulating body can flow out and participate in the charging and discharging process of the battery. In addition, the leakage hole 13 can also reduce the weight of the insulating body, reduce the amount of material used in the insulating body, reduce manufacturing costs, and improve the energy density and service life of the battery.

[0032] 2. According to some embodiments of the present invention, the insulating body includes: a bottom wall 11 and a side wall 12. The bottom wall 11 is disposed between the bottom wall 11 of the battery housing 21 and the positive electrode of the battery cell; the side wall 12 is disposed around the outer periphery of the bottom wall 11 and is located between the battery cell and the side wall 12 of the battery housing 21.

[0033] According to some embodiments of the present invention, a matching hole 14 suitable for the positive electrode of the battery cell to pass through is formed on the bottom wall 11. The presence of the matching hole 14 helps to improve the overall structural stability of the battery because it provides a fixing point in which the positive electrode of the battery cell can be fixed, ensuring the stability and reliability of the battery cell within the insulating component 100. The matching hole 14 allows the positive electrode of the battery cell to pass through the insulating component 100 and be welded or mechanically connected to the battery casing 21 or other components, thereby forming the electrical path of the battery and ensuring the normal operation of the battery. During the manufacturing process, the matching hole 14 can simplify the assembly process of the battery cell and the insulating component 100 because they provide a clear passing point for the positive electrode of the battery cell, reducing the reliance on precise manual operation.

[0034] According to some embodiments of this utility model, the matching hole 14 is constructed as a circular hole. A circular hole is a standardized design that is easily compatible with existing manufacturing processes and equipment. This design simplifies the production process and improves manufacturing efficiency. The circular hole provides a simple and effective way to position the positive electrode of the battery cell. Through a precise circular hole design, it can be ensured that the positive electrode of the battery cell correctly passes through the insulation component 100 and connects with other components within the battery, thereby guaranteeing good electrical contact and structural stability. Circular holes are relatively easy to manufacture through machining or mold forming. This design can reduce the complexity and cost of the manufacturing process.

[0035] According to some embodiments of this utility model, the insulating body is provided with weight reduction holes.

[0036] In some specific embodiments, weight-reducing holes can be provided on the sidewalls 12 and bottom wall 11 of the insulating body. The weight-reducing holes can reduce the amount of material used in the insulating component 100, reduce the manufacturing cost of the battery, reduce the overall weight of the battery, thereby increasing the energy density of the battery. The design of the weight-reducing holes also helps to improve the thermal management of the battery, allowing heat to be transferred from the positive electrode of the cell to the battery casing 21 through the holes, thereby helping to control the operating temperature of the battery.

[0037] According to some embodiments of the present invention, the leakage holes 13 are configured in multiple ways and are disposed on the bottom wall 11.

[0038] In some specific embodiments, multiple leakage holes 13 are constructed. By providing multiple leakage holes 13, even if one hole is blocked, the other holes can still continue to work, ensuring that the electrolyte can flow stably and continuously from the insulating member 100 to the space between the battery casing 21 and the insulating member 100. This ensures that the electrolyte fully participates in the charging and discharging process of the battery, improving the energy density and service life of the battery. The leakage holes 13 are set on the bottom wall 11 and located between the positive electrode of the cell and the bottom wall 11 of the battery casing 21, ensuring that any liquid leaking from the positive electrode of the cell flows directly to the bottom of the battery casing 21, thereby preventing the electrolyte from accumulating inside the battery or flowing to other sensitive areas.

[0039] According to some embodiments of the present invention, a plurality of leakage holes 13 are arranged around the outer periphery of the matching hole 14, which can more evenly distribute the electrolyte around the matching hole 14 to flow out between the battery casing 21 and the insulating member 100, avoiding the accumulation of electrolyte in a part of the outer periphery of the matching hole 14, so that the electrolyte around the matching hole 14 can be more evenly distributed between the entire battery casing 21 and the insulating member 100, thereby improving the efficiency and performance of the battery.

[0040] According to some embodiments of this utility model, the leakage hole 13 is constructed as an elongated hole. Compared with a circular hole, an elongated hole can provide a larger flow area in the same area, which helps to improve the flow efficiency of the battery fluid. The design of the elongated hole reduces the risk of solid particles or deposits in the battery fluid clogging the hole, because the elongated shape of the hole is less likely to be blocked by small particles. The elongated hole can provide a certain structural strength along the long axis of the hole, which helps to maintain the overall stability of the insulating component 100. Multiple elongated holes can extend in different directions, so that the battery fluid may flow into the space between the battery casing 21 and the insulating component 100 from different angles.

[0041] According to some embodiments of this utility model, the insulating component 100 is constructed as a plastic component. Plastic is an excellent insulating material, which can effectively prevent short circuits between the positive electrode of the battery cell and the battery casing 21. Plastic materials (such as polypropylene PP, polyamide PA, polycarbonate PC, etc.) have good chemical corrosion resistance and can resist the erosion of electrolyte and other chemicals, ensuring the stability and reliability of battery operation. Plastic materials are generally relatively light, which helps to reduce the weight of the entire battery. At the same time, plastic materials are relatively inexpensive and have high production efficiency, which helps to reduce the manufacturing cost of the insulating component 100 and improve the production efficiency of the insulating component 100. Some high-performance plastic materials (such as polyamide PA, polyphenylene sulfide PPS, etc.) also have good high-temperature resistance and can maintain their physical and mechanical properties over a wide temperature range, thereby improving the battery's service life.

[0042] The battery according to this utility model is briefly described below.

[0043] The battery according to this utility model is provided with the insulating member 100 as described in any of the above embodiments. Since the battery according to this utility model is provided with the insulating member 100 as described in any of the above embodiments, the battery according to this utility model has better safety and higher reliability during operation.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0045] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more.

[0046] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0047] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0048] In the description of this specification, references to the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0049] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An insulating component for a battery, characterized in that, include: An insulating body is disposed between the battery casing (21) and the battery cell and wraps around the outer periphery of the positive electrode of the battery cell, wherein a leakage hole (13) is formed on the insulating body in the thickness direction.

2. The insulating component for a battery according to claim 1, characterized in that, The insulating body includes: Bottom wall (11), the bottom wall (11) is disposed between the bottom wall (11) of the battery casing (21) and the positive electrode of the battery cell; Sidewall (12) is disposed around the outer periphery of the bottom wall (11) and located between the cell and the sidewall (12) of the battery casing (21).

3. The insulating component for a battery according to claim 2, characterized in that, A matching hole (14) suitable for the positive electrode of the battery cell to pass through is formed on the bottom wall (11).

4. The insulating component for a battery according to claim 3, characterized in that, The matching hole (14) is constructed as a circular hole.

5. The insulating component for a battery according to claim 1, characterized in that, The insulating body is provided with weight reduction holes.

6. The insulating component for a battery according to claim 2, characterized in that, The leakage holes (13) are multiple and are located on the bottom wall (11).

7. The insulating component for a battery according to claim 3, characterized in that, Multiple leakage holes (13) are arranged around the outer periphery of the matching hole (14).

8. The insulating component for a battery according to claim 7, characterized in that, The leakage hole (13) is constructed as an elongated hole.

9. The insulating component for a battery according to claim 1, characterized in that, The insulating component is made of plastic.

10. A battery, characterized in that, Includes the insulating element as described in any one of claims 1-9.

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