Insulation sealing ring, stop frame, battery cover plate and battery

Abstract

The utility model discloses an insulation sealing ring, a stop frame, a battery cover plate and a battery, and belongs to the technical field of lithium batteries. The insulation sealing ring provided by the utility model is a hard insulation sealing ring, and comprises an insulation sealing ring main body which is in an annular shape; the outer side of the insulation sealing ring main body is connected with at least one extension rod, and one end, far away from the insulation sealing ring main body, of the extension rod is provided with a fixed column. According to the scheme, the insulation sealing ring is arranged to be of a hard structure, so that the insulation sealing ring can play a role in fixing and supporting the battery cover plate while playing a role in insulation, and the structural strength of the battery cover plate is improved. The outer side of the insulation sealing ring body is connected with an extension rod, one end of the extension rod is provided with a fixing column, and the fixing column is used for being connected with a stop frame and fixing the stop frame.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and more specifically to an insulating sealing ring, a stop frame, a battery cover and a battery. Background Art

[0002] Lithium batteries are widely used due to their high energy density, lack of memory effect, long single-cell cycle time, high efficiency, cleanliness, and pollution-free properties. As core components of power lithium batteries, the performance and function of battery structural components are particularly important within the entire battery. The insulation and sealing performance of the battery pole, a key component within the battery structure, and the overall quality of the pole assembly and cover plate affect the quality of the entire battery structure and, ultimately, the battery. Existing battery cover plate structures typically incorporate an insulating sealing ring between the pole and base plate for insulation and sealing. However, this existing method results in poor insulation and sealing, which can easily cause battery short circuits. Furthermore, it occupies a large space within the battery cover plate structure, hindering the improvement of the battery's energy density. Utility Model Content

[0003] The utility model provides an insulating sealing ring, a stop frame, a battery cover plate and a battery. The adopted insulating sealing ring can more reliably perform insulating sealing between the pole in the cover plate and the base plate, making the battery more reliable.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0005] An insulating sealing ring is a hard insulating sealing ring, which includes an insulating sealing ring body, which is annular; at least one extension rod is connected to the outer side of the insulating sealing ring body, and a fixing column is provided at one end of the extension rod away from the insulating sealing ring body.

[0006] In this solution, the insulating seal ring is designed as a rigid structure, allowing it to provide both insulation and support for the battery cover, thereby enhancing the structural strength of the battery cover. An extension rod is connected to the outer side of the insulating seal ring body, and a fixing post is provided at one end of the extension rod. The fixing post is used to connect to the stop frame to secure the stop frame.

[0007] In a preferred embodiment, the insulating seal ring body is formed by two opposing long sides and two opposing short sides, and four extension rods are provided; each of the extension rods extends along the long sides. Each of the two extension rods is located on either side of the insulating seal ring body, ensuring more uniform force on the stop frame when it is fixedly connected.

[0008] Furthermore, the fixing column protrudes toward the inner side of the insulating sealing ring, so that the fixing column can be connected to the stop frame.

[0009] Preferably, the insulating sealing ring body includes an insulating sealing ring outer layer and an insulating sealing ring inner layer, and an accommodating groove is formed between the insulating sealing ring outer layer and the insulating sealing ring inner layer to improve the insulation reliability of the insulating sealing ring.

[0010] Preferably, the extension rod is connected to the inner layer of the insulating sealing ring, so that the fixing column can be connected to the stop frame.

[0011] As a further improvement, a limiting ear is provided on one side of the insulating sealing ring body for cooperating with the limiting hole on the substrate to position the insulating sealing ring.

[0012] The utility model also provides a stop frame, which is a stop frame. At least one fixed step is arranged on the stop frame, and a fixed connection position is arranged on the fixed step.

[0013] In this solution, a fixed connection position is provided on the stop frame for cooperating with the insulating sealing ring, so that the stop frame can be fixed by the insulating sealing ring. After the fixing column is cooperating with the fixed connection position, the stop frame can be fixed, making the fixation of the stop frame more convenient.

[0014] The utility model also provides a battery cover, comprising a substrate, a pole and the insulating sealing ring, wherein the pole is arranged through the substrate, the insulating sealing ring body is arranged around the pole and is located between the substrate and the pole, and the substrate, the insulating sealing ring and the pole are integrally formed.

[0015] In this solution, the substrate, insulating seal ring and pole are integrated into one, so that the insulating seal ring is firmly fixed on the outside of the pole, which can reliably insulate the pole and effectively avoid the phenomenon of battery short circuit caused by poor insulation.

[0016] As a further improvement, a through hole for the pole to pass through is provided on the substrate, and a limiting hole is provided on one side of the through hole.

[0017] The utility model further provides a battery, comprising the stop frame and the battery cover, wherein the fixing column in the insulating sealing ring is correspondingly matched and connected with the fixed connection position of the stop frame.

[0018] In this solution, the insulating sealing ring is integrally formed with the base plate and the pole, thereby improving the insulation reliability of the insulating sealing ring. The fixing column in the insulating sealing ring is connected with the stop frame, making the stop frame more secure and convenient to fix. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the combined structure of the battery cover and the stop frame;

[0020] Figure 2This is an exploded diagram of the battery cover and stop frame assembly structure;

[0021] Figure 3 Schematic diagram of the insulating sealing ring structure;

[0022] Figure 4 Schematic diagram of the battery cover structure;

[0023] Figure 5 This is the front view of the battery cover;

[0024] Figure 6 for Figure 5 Schematic diagram of the DD cross-section of the middle battery cover.

[0025] Description of labels:

[0026] 1. Base plate; 11. Explosion-proof valve hole; 12. Limit hole;

[0027] 2. Stop frame; 21. Fixed step;

[0028] 3. Insulation sealing ring; 31. Insulation sealing ring body; 32. Limiting ear; 33. Extension rod; 34. Fixing column; 35. Insulation sealing ring outer layer; 36. Insulation sealing ring inner layer;

[0029] 4. Pole; 41. Pressure plate. DETAILED DESCRIPTION

[0030] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0031] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in this specification for understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the utility model and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose of the utility model. At the same time, terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the utility model without substantially changing the technical content.

[0032] Example 1

[0033] like Figure 2 and Figure 3As shown, this embodiment provides an insulating sealing ring, which is a hard insulating sealing ring 3. The insulating sealing ring 3 can be formed of a hard structure using materials such as PPS (polyphenylene sulfide) or PP (polypropylene). The insulating sealing ring 3 includes an insulating sealing ring body 31, and the insulating sealing ring body 31 is annular. When the insulating sealing ring 3, the substrate 1, and the pole 4 form a battery cover, the pole 4 is arranged through the substrate 1, and the insulating sealing ring body 31 is arranged around the pole 4 and is located between the substrate 1 and the pole 4. The insulating sealing ring 3 is set as a hard structure, so that the insulating sealing ring 3 can play a role of fixing and supporting the battery cover while playing an insulating role, thereby improving the structural strength of the battery cover.

[0034] Four extension rods 33 are connected to the outer side of the insulating seal ring body 31. A fixing post 34 is provided at one end of the extension rod 33, away from the insulating seal ring body 31. The fixing post 34 is used to connect to the stop frame 2, thereby securing the stop frame 2. It should be noted that in other cases, the number of extension rods 33 is not limited to four and can be set to another number as needed.

[0035] The insulating seal ring body 31 is formed by two opposing long sides and two opposing short sides. Four extension rods 33 are provided, each extending along the long sides. More specifically, the insulating seal ring body 31 is roughly square in shape, with an extension rod 33 positioned at each end of each long side. Fixed posts 34 protrude inward from the insulating seal ring 3.

[0036] Regarding the inner side of the insulating sealing ring 3, it should be noted that when the insulating sealing ring 3, the substrate 1, and the pole 4 form a battery cover, and the battery cover and the winding core form a winding core, the side of the insulating sealing ring 3 close to the winding core is the "inside", and the other side opposite to the winding core is the "outside".

[0037] The fixing column 34 protrudes toward the inner side of the insulating sealing ring 3 and is connected to the stop frame 2. Four extension rods 33 are set on the insulating sealing ring body 31. Every two extension rods 33 are respectively located on both sides of the insulating sealing ring body 31, which can make the stop frame 2 more evenly stressed when fixedly connected to the stop frame 2.

[0038] Combine Figure 5 and Figure 6 As shown, the insulating seal ring body 31 includes an insulating seal ring outer layer 35 and an insulating seal ring inner layer 36, with a receiving groove formed between the insulating seal ring outer layer 35 and the insulating seal ring inner layer 36. The extension rod 33 is connected to the insulating seal ring inner layer 36. The substrate 1 has a through hole for the terminal 4 to pass through. When the insulating seal ring 3 is connected to the substrate 1, the side of the through hole is located in the receiving groove formed between the insulating seal ring outer layer 35 and the insulating seal ring inner layer 36, thereby improving the insulation reliability of the insulating seal ring 3.

[0039] As a further improvement, a limiting ear 32 is provided on one side of the insulating sealing ring body 31 for mating with the limiting hole 12 on the substrate 1 to position the insulating sealing ring 3 .

[0040] In this embodiment, the insulating seal ring 3 is a rigid structure that primarily insulates the terminal 4, but also serves to securely support the battery cover. Furthermore, the rigid structure of the insulating seal ring 3 allows it to connect to the retaining frame 2, securing the retaining frame 2.

[0041] Example 2

[0042] like Figure 2 As shown, this embodiment provides a stop frame, which is a stop frame 2. The stop frame 2 is provided with four fixed steps 21, and the fixed steps 21 are provided with fixed connection positions. The number of fixed steps 21 provided corresponds to the number of extension rods 33 and fixed columns 34 provided.

[0043] Specifically, the fixed connection position is a connection hole, which is used to connect with the fixed column 34 of the insulating sealing ring 3.

[0044] As a preferred embodiment, the extension rod 33 is connected to the inner layer 36 of the insulating sealing ring, is located on the fixed step 21, and has a groove on one side of the fixed connection position. When the extension rod 33 connects the fixed column 34 to the connection hole, the extension rod 33 is accommodated in the groove, so that the extension rod 33 does not occupy external space, making the battery structure more compact.

[0045] Example 3

[0046] Combine Figure 1 、 Figure 2 and Figure 4 As shown, this embodiment provides a battery cover, including a substrate 1, a terminal 4, and the insulating sealing ring described in Example 1. The terminal 4 is arranged through the substrate 1, and the insulating sealing ring body 31 is arranged around the terminal 4 and located between the substrate 1 and the terminal 4, so that the insulating sealing ring 3 insulates the terminal 4. At the same time, the insulating sealing ring 3 has a hard structure, which enables the substrate 1, the insulating sealing ring 3, and the terminal 4 to be integrally formed.

[0047] The substrate 1, insulating sealing ring 3 and pole 4 can be integrally formed by injection molding, for example, by nano injection molding to achieve the integrated molding of the substrate 1, insulating sealing ring 3 and pole 4, thereby improving the bonding strength between the substrate 1, insulating sealing ring 3 and pole 4.

[0048] As a further improvement, the base plate 1 has a through hole for the terminal 4 to pass through, with a stopper hole 12 positioned on one side of the through hole. This stopper hole 12 engages with a stopper ear 32 in the insulating seal 3 to position the insulating seal 3. The base plate 1 also has an explosion-proof valve hole 11 for releasing pressure from the battery. A pressure plate 41 is also positioned on the outside of the terminal 4.

[0049] In this embodiment, the substrate 1, the insulating sealing ring 3 and the pole 4 are integrally formed, so that the insulating sealing ring 3 is firmly fixed to the outside of the pole 4, which can reliably insulate the pole 4 and effectively avoid the phenomenon of battery short circuit caused by poor insulation.

[0050] Example 4

[0051] This embodiment provides a battery, including the stop frame described in Example 2 and the battery cover described in Example 3, wherein the fixing column 34 in the insulating sealing ring 3 is correspondingly connected with the fixed connection position of the stop frame 2.

[0052] In this embodiment, the insulating sealing ring 3 is integrally formed with the base plate 1 and the pole 4. The fixing column 34 in the insulating sealing ring 3 is connected to the stop frame 2, so that the stop frame 2 is fixed more firmly and the battery structure is more compact.

[0053] The terms "installed," "disposed," "equipped with," and "connected" used in this application should be interpreted broadly. For example, they may refer to fixed connections, removable connections, or integral structures; they may be mechanical connections; they may be direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0054] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An insulating sealing ring, characterized in that: The invention relates to a hard insulating sealing ring (3), comprising an insulating sealing ring body (31), wherein the insulating sealing ring body (31) is annular; at least one extension rod (33) is connected to the outer side of the insulating sealing ring body (31), and a fixing column (34) is provided at one end of the extension rod (33) away from the insulating sealing ring body (31).

2. The insulating sealing ring according to claim 1, characterized in that: The insulating sealing ring body (31) is formed by two oppositely arranged long sides and two oppositely arranged short sides, and four extension rods (33) are provided; the extension rods (33) all extend along the direction of the long sides.

3. The insulating sealing ring according to claim 1, characterized in that: The fixing column (34) protrudes toward the inner side of the insulating sealing ring (3).

4. The insulating sealing ring according to any one of claims 1 to 3, characterized in that: The insulating sealing ring body (31) comprises an insulating sealing ring outer layer (35) and an insulating sealing ring inner layer (36), and an accommodating groove is formed between the insulating sealing ring outer layer (35) and the insulating sealing ring inner layer (36).

5. The insulating sealing ring according to claim 4, characterized in that: The extension rod (33) is connected to the inner layer (36) of the insulating sealing ring.

6. The insulating sealing ring according to claim 4, characterized in that: A limiting ear (32) is provided on one side of the insulating sealing ring body (31).

7. A stop frame, characterized in that: The stop frame (2) is provided with at least one fixed step (21), and a fixed connection position is provided on the fixed step (21), and the fixed connection position is used to be matched with the fixed column (34) in the insulating sealing ring according to any one of claims 1 to 6.

8. A battery cover, characterized in that: The invention comprises a substrate (1), a pole (4) and an insulating sealing ring according to any one of claims 1 to 6, wherein the pole (4) is arranged through the substrate (1), the insulating sealing ring body (31) is arranged around the pole (4) and is located between the substrate (1) and the pole (4), and the substrate (1), the insulating sealing ring (3) and the pole (4) are integrally formed.

9. The battery cover according to claim 8, characterized in that: A through hole for the pole (4) to pass through is provided on the substrate (1), and a limiting hole (12) is provided on one side of the through hole.

10. A battery, characterized in that: It comprises the stop frame according to claim 7 and the battery cover according to claim 8 or 9, wherein the fixing column (34) in the insulating sealing ring (3) is correspondingly connected with the fixed connection position of the stop frame (2).

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