Roll core assembly for battery roll material

Abstract

The utility model discloses a roll core component for a battery roll material, which comprises a plurality of first support rings, a first front inner convex ring and a first front outer convex ring which are coaxially arranged are formed on the front end surface of each first support ring, and the first front outer convex ring is positioned on the outer side of the first front inner convex ring; an annular first clamping groove is formed between the first front outer protruding ring and the first front inner protruding ring, a first rear inner protruding ring and a first rear outer protruding ring which are coaxially arranged are formed on the rear end face of the first supporting ring, and the first rear outer protruding ring is located on the outer side of the first rear inner protruding ring. The first rear outer protruding ring and the first rear inner protruding ring of the first supporting ring on the front side are clamped in the first clamping groove of the first supporting ring on the rear side, and at the moment, every two adjacent first supporting rings are coaxially arranged. The overall length of the roll core assembly can be changed through different connection modes and matching of different numbers of first supporting rings or second supporting rings; and the degree of freedom in the radial direction can be limited, so that the coiled material cannot be distorted and deformed.

Description

Technical Field

[0001] This utility model relates to a core assembly for battery rolls. Background Technology

[0002] New energy vehicle batteries require a large amount of film rolls, such as PET film, PVC film, and PP film, during production. To facilitate the production and transportation of these films, specialized cores need to be designed. Most existing cores are long and integral. Due to their length, it is difficult to control the straightness of these cores during production. After production, changes in temperature and humidity can also cause deformation of the entire long core. Therefore, some cores are designed as multi-segment spliced ​​types, which reduces the difficulty of production and the degree of deformation of the core during use. However, existing multi-segment spliced ​​cores have no restrictions in their radial direction. That is, when two adjacent core units are subjected to external forces, they will misalign radially, causing the roll material wound on the core to twist and deform, affecting the quality of the product. Summary of the Invention

[0003] The purpose of this invention is to provide a core assembly for battery rolls that can restrict the degree of freedom in the radial direction, thereby ensuring that the roll will not be twisted or deformed.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a core assembly for battery coils, comprising a plurality of first support rings. A first front inner convex ring and a first front outer convex ring, both coaxially arranged and annular, are formed on the front end face of the first support ring. The first front outer convex ring is located outside the first front inner convex ring, and an annular first groove is formed between the first front outer convex ring and the first front inner convex ring. A first rear inner convex ring and a first rear outer convex ring, both coaxially arranged and annular, are formed on the rear end face of the first support ring. The first rear outer convex ring is located outside the first rear inner convex ring. When two adjacent first support rings are connected end-to-end, the first rear outer convex ring and the first rear inner convex ring of the front first support ring are engaged in the first groove of the rear first support ring. At this time, the two adjacent first support rings are coaxially arranged.

[0005] Another optimization scheme is that the inner diameter of the first rear inner convex ring is not less than the outer diameter of the first front inner convex ring; the inner diameter of the first front outer convex ring is not less than the outer diameter of the first rear outer convex ring. The first rear inner convex ring matches the first front inner convex ring, and the inner diameter of the first front outer convex ring matches the outer diameter of the first rear outer convex ring. This effectively restricts the radial degree of freedom of the two adjacent first support rings and ensures the straightness of the core assembly.

[0006] Another optimization scheme is that the first support ring includes a first inner ring, a first outer ring sleeved on the outside of the first inner ring, and a first intermediate ring connecting the first inner ring and the first outer ring. The double-layer structure of the first inner ring and the first outer ring effectively reduces the weight of the core assembly and the amount of raw materials required for manufacturing.

[0007] In another optimization scheme, the first front inner convex ring is formed on the front end face of the first inner ring, and the first front outer convex ring is formed on the front end face of the first outer ring; the first rear inner convex ring is formed on the rear end face of the first inner ring, and the first front outer convex ring is formed on the rear end face of the first outer ring.

[0008] Another optimization scheme is that a number of reinforcing ribs are provided on the upper end surface of the first intermediate ring and between the first inner ring and the first outer ring; a number of reinforcing ribs are also provided on the lower end surface of the first intermediate ring and between the first inner ring and the first outer ring. The reinforcing ribs can effectively improve the connection strength between the first inner ring and the first outer ring and ensure the support strength of the first support ring.

[0009] In another optimization scheme, the core assembly further includes a second support ring. The front end face of the second support ring has a second front inner convex ring and a second front outer convex ring, both coaxially arranged and annular. The second front outer convex ring is located outside the second front inner convex ring. An annular second slot is formed between the second front outer convex ring and the second front inner convex ring. When the front end face of the second support ring is spliced ​​with the rear end face of the first support ring in front of it, the second slot engages with the first rear inner convex ring and the first rear outer convex ring on the rear end face of the first support ring. At this time, the second support ring and the first support ring are coaxially arranged. The second support ring allows the core assembly to be suitable for different application scenarios. For example, by differentiating the axial lengths of the second support ring and the first support ring, the overall length of the core assembly can be changed through different connection methods.

[0010] Another optimization scheme involves forming a second rear inner convex ring and a second rear outer convex ring, both coaxially arranged and annular, on the rear end face of the second support ring. The second rear outer convex ring is located outside the second rear inner convex ring, and an annular third groove is formed between the second rear outer convex ring and the second rear inner convex ring. When the rear end face of the second support ring is spliced ​​with the rear end face of the adjacent first support ring, the first rear inner convex ring and the first rear outer convex ring of the first support ring are engaged in the third groove of the second support ring. At this time, the first support ring and the second support ring are coaxially arranged. By also setting the rear end face of the second support ring to have a groove, the application scenarios of the core assembly are further expanded.

[0011] Another optimization scheme is that the second support ring includes a second inner ring, a second outer ring sleeved on the outside of the second inner ring, and a second intermediate ring connecting the second inner ring and the second outer ring. The double-layer structure of the second inner ring and the second outer ring effectively reduces the weight of the core assembly and the amount of raw materials required for manufacturing.

[0012] In another optimization scheme, the second front inner convex ring is formed on the front end face of the second inner ring, and the second front outer convex ring is formed on the front end face of the second outer ring; the second rear inner convex ring is formed on the rear end face of the second inner ring, and the first front outer convex ring is formed on the rear end face of the second outer ring.

[0013] In another optimization scheme, the front end face of the second support ring is provided with several locking protrusions. The locking protrusions are inserted between the first inner ring and the first outer ring. The locking protrusions are used to restrict the relative rotation of the second support ring and the first support ring. At least two of the locking protrusions are engaged with both sides of the reinforcing rib of the first support ring, so that the second support ring and the first support ring cannot rotate relative to each other. The upper end face of the second intermediate ring is provided with several reinforcing ribs located between the second inner ring and the second outer ring. The lower end face of the second intermediate ring is also provided with several reinforcing ribs located between the second inner ring and the second outer ring. The reinforcing ribs can effectively improve the connection strength between the second inner ring and the second outer ring and ensure the support strength of the second support ring.

[0014] Due to the application of the above technical solutions, this utility model has the following advantages compared with the prior art: the overall length of the core assembly can be changed by different connection methods and combinations of different numbers of first support rings or second support rings; the radial degree of freedom can be restricted to ensure that the roll material will not be twisted or deformed. Attached Figure Description

[0015] Figure 1 This is a perspective view of the first support ring in Embodiment 1;

[0016] Figure 2 This is a perspective view of the first support ring in Embodiment 1 from another angle;

[0017] Figure 3 This is a perspective view of the second support ring in Embodiment 1;

[0018] Figure 4 This is a perspective view of the second support ring in Embodiment 1 from another angle;

[0019] Figure 5 This is a side view of the first and second support rings when they are joined together in Embodiment 1.

[0020] Figure 6This is a side view of the first and second support rings in Example 1 when they are used separately.

[0021] Figure 7 This is a perspective view of the first and second support rings when they are used separately in Embodiment 1;

[0022] Figure 8 This is a perspective view of the first support ring in Embodiment 2;

[0023] Figure 9 This is a perspective view of the second support ring in Example 2. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings. Example 1

[0025] See Figure 1-7 As shown, the battery coil core assembly includes several first support rings 1 and several second support rings 2.

[0026] The front end face of the first support ring 1 has a first front inner protruding ring 15 and a first front outer protruding ring 14, which are coaxially arranged and both annular. The first front outer protruding ring 14 is located outside the first front inner protruding ring 15. An annular first groove 19 is formed between the first front outer protruding ring 14 and the first front inner protruding ring 15. The rear end face of the first support ring 1 has a first rear inner protruding ring 17 and a first rear outer protruding ring 18, which are coaxially arranged and both annular. The first rear outer protruding ring 18 is located outside the first rear inner protruding ring 17. When two adjacent first support rings 1 are connected end to end, the first rear outer protruding ring 18 and the first rear inner protruding ring 17 of the first support ring 1 on the front side are engaged in the first groove 19 of the first support ring 1 on the rear side. At this time, the two adjacent first support rings 1 are coaxially arranged.

[0027] The inner diameter of the first rear inner convex ring 17 is not less than the outer diameter of the first front inner convex ring 15; the inner diameter of the first front outer convex ring 14 is not less than the outer diameter of the first rear outer convex ring 18. The first rear inner convex ring 17 matches the first front inner convex ring 15, and the inner diameter of the first front outer convex ring 14 matches the outer diameter of the first rear outer convex ring 18, effectively restricting the radial freedom of the two adjacent first support rings 1 and ensuring the straightness of the core assembly.

[0028] The first support ring 1 includes a first inner ring 11, a first outer ring 12 sleeved on the outside of the first inner ring 11, and a first intermediate ring 13 connecting the first inner ring 11 and the first outer ring 12. The double-layer structure of the first inner ring 11 and the first outer ring 12 effectively reduces the weight of the core assembly and the amount of raw materials required for manufacturing.

[0029] The first front inner convex ring 15 is formed on the front end face of the first inner ring 11, and the first front outer convex ring 14 is formed on the front end face of the first outer ring 12; the first rear inner convex ring 17 is formed on the rear end face of the first inner ring 11, and the first front outer convex ring 14 is formed on the rear end face of the first outer ring 12.

[0030] A plurality of reinforcing ribs 3 are provided on the upper end surface of the first intermediate ring 13 and between the first inner ring 11 and the first outer ring 12; a plurality of reinforcing ribs 3 are also provided on the lower end surface of the first intermediate ring 13 and between the first inner ring 11 and the first outer ring 12. The reinforcing ribs 3 can effectively improve the connection strength between the first inner ring 11 and the first outer ring 12 and ensure the support strength of the first support ring 1.

[0031] The front end face of the second support ring 2 has a second front inner convex ring 25 and a second front outer convex ring 24 that are coaxially arranged and both annular. The second front outer convex ring 24 is located outside the second front inner convex ring 25. An annular second slot 29 is formed between the second front outer convex ring 24 and the second front inner convex ring 25. When the front end face of the second support ring 2 is spliced ​​with the rear end face of the first support ring 1 in front of it, the second slot 29 is engaged with the first rear inner convex ring 17 and the first rear outer convex ring 18 on the rear end face of the first support ring 1. At this time, the second support ring 2 and the first support ring 1 are coaxially arranged. The second support ring 2 can make the core assembly suitable for different application scenarios. For example, by differentiating the axial lengths of the second support ring 2 and the first support ring 1, the overall length of the core assembly can be changed by different connection methods and combinations of different numbers of first support rings or second support rings.

[0032] The rear end face of the second support ring 2 has a second rear inner convex ring 27 and a second rear outer convex ring 28 that are coaxially arranged and both are annular. The second rear outer convex ring 28 is located outside the second rear inner convex ring 27. An annular third groove 26 is formed between the second rear outer convex ring 28 and the second rear inner convex ring 27. When the rear end face of the second support ring 2 is spliced ​​with the rear end face of the adjacent first support ring 1, the first rear inner convex ring 17 and the first rear outer convex ring 18 of the first support ring 1 are engaged in the third groove 26 of the second support ring 2. At this time, the first support ring 1 and the second support ring 2 are coaxially arranged. By setting the rear end face of the second support ring 2 to also have a groove, the application scenarios of the core assembly are further increased.

[0033] The second support ring 2 includes a second inner ring 21, a second outer ring 22 sleeved on the outside of the second inner ring 21, and a second intermediate ring 23 connected between the second inner ring 21 and the second outer ring 22. The double-layer structure of the second inner ring 21 and the second outer ring 22 effectively reduces the weight of the core assembly and the amount of raw materials required for manufacturing.

[0034] The second front inner convex ring 25 is formed on the front end face of the second inner ring 21, the second front outer convex ring 24 is formed on the front end face of the second outer ring 22; the second rear inner convex ring 27 is formed on the rear end face of the second inner ring 21, and the first front outer convex ring 14 is formed on the rear end face of the second outer ring 22.

[0035] The front end face of the second support ring 2 is provided with a plurality of locking protrusions 20. The locking protrusions 20 are inserted between the first inner ring 11 and the first outer ring 12. The locking protrusions 20 are used to restrict the relative rotation of the second support ring 2 and the first support ring 1. At least two of the locking protrusions 20 are locked on both sides of the reinforcing ribs 3 of the first support ring 1, so that the second support ring 2 and the first support ring 1 cannot rotate relative to each other. The upper end face of the second intermediate ring 23 and located between the second inner ring 21 and the second outer ring 22 is provided with a plurality of reinforcing ribs 3. The lower end face of the second intermediate ring 23 and located between the second inner ring 21 and the second outer ring 22 is also provided with a plurality of reinforcing ribs 3. The reinforcing ribs 3 can effectively improve the connection strength between the second inner ring 21 and the second outer ring 22 and can ensure the support strength of the second support ring 2. Example 2

[0036] See Figure 1-9 As shown, the battery coil core assembly includes several first support rings 1 and several second support rings 2.

[0037] The front end face of the first support ring 1 has a first front inner protruding ring 15 and a first front outer protruding ring 14, which are coaxially arranged and both annular. The first front outer protruding ring 14 is located outside the first front inner protruding ring 15. An annular first groove 19 is formed between the first front outer protruding ring 14 and the first front inner protruding ring 15. The rear end face of the first support ring 1 has a first rear inner protruding ring 17 and a first rear outer protruding ring 18, which are coaxially arranged and both annular. The first rear outer protruding ring 18 is located outside the first rear inner protruding ring 17. When two adjacent first support rings 1 are connected end to end, the first rear outer protruding ring 18 and the first rear inner protruding ring 17 of the first support ring 1 on the front side are engaged in the first groove 19 of the first support ring 1 on the rear side. At this time, the two adjacent first support rings 1 are coaxially arranged.

[0038] The inner diameter of the first rear inner convex ring 17 is not less than the outer diameter of the first front inner convex ring 15; the inner diameter of the first front outer convex ring 14 is not less than the outer diameter of the first rear outer convex ring 18. The first rear inner convex ring 17 matches the first front inner convex ring 15, and the inner diameter of the first front outer convex ring 14 matches the outer diameter of the first rear outer convex ring 18, effectively restricting the radial freedom of the two adjacent first support rings 1 and ensuring the straightness of the core assembly.

[0039] The first support ring 1 includes a first inner ring 11, a first outer ring 12 sleeved on the outside of the first inner ring 11, and a first intermediate ring 13 connecting the first inner ring 11 and the first outer ring 12. The double-layer structure of the first inner ring 11 and the first outer ring 12 effectively reduces the weight of the core assembly and the amount of raw materials required for manufacturing.

[0040] The first front inner convex ring 15 is formed on the front end face of the first inner ring 11, and the first front outer convex ring 14 is formed on the front end face of the first outer ring 12; the first rear inner convex ring 17 is formed on the rear end face of the first inner ring 11, and the first front outer convex ring 14 is formed on the rear end face of the first outer ring 12.

[0041] A plurality of reinforcing ribs 3 are provided on the upper end surface of the first intermediate ring 13 and between the first inner ring 11 and the first outer ring 12; a plurality of reinforcing ribs 3 are also provided on the lower end surface of the first intermediate ring 13 and between the first inner ring 11 and the first outer ring 12. The reinforcing ribs 3 can effectively improve the connection strength between the first inner ring 11 and the first outer ring 12 and ensure the support strength of the first support ring 1.

[0042] The front end face of the second support ring 2 has a second front inner convex ring 25 and a second front outer convex ring 24 that are coaxially arranged and both annular. The second front outer convex ring 24 is located outside the second front inner convex ring 25. An annular second slot 29 is formed between the second front outer convex ring 24 and the second front inner convex ring 25. When the front end face of the second support ring 2 is spliced ​​with the rear end face of the first support ring 1 in front of it, the second slot 29 is engaged with the first rear inner convex ring 17 and the first rear outer convex ring 18 on the rear end face of the first support ring 1. At this time, the second support ring 2 and the first support ring 1 are coaxially arranged. The second support ring 2 can make the core assembly suitable for different application scenarios. For example, by differentiating the axial lengths of the second support ring 2 and the first support ring 1, the overall length of the core assembly can be changed by different connection methods and combinations of different numbers of first support rings or second support rings.

[0043] The rear end face of the second support ring 2 has a second rear inner convex ring 27 and a second rear outer convex ring 28 that are coaxially arranged and both are annular. The second rear outer convex ring 28 is located outside the second rear inner convex ring 27. An annular third groove 26 is formed between the second rear outer convex ring 28 and the second rear inner convex ring 27. When the rear end face of the second support ring 2 is spliced ​​with the rear end face of the adjacent first support ring 1, the first rear inner convex ring 17 and the first rear outer convex ring 18 of the first support ring 1 are engaged in the third groove 26 of the second support ring 2. At this time, the first support ring 1 and the second support ring 2 are coaxially arranged. By setting the rear end face of the second support ring 2 to also have a groove, the application scenarios of the core assembly are further increased.

[0044] The second support ring 2 includes a second inner ring 21, a second outer ring 22 sleeved on the outside of the second inner ring 21, and a second intermediate ring 23 connected between the second inner ring 21 and the second outer ring 22. The double-layer structure of the second inner ring 21 and the second outer ring 22 effectively reduces the weight of the core assembly and the amount of raw materials required for manufacturing.

[0045] The second front inner convex ring 25 is formed on the front end face of the second inner ring 21, the second front outer convex ring 24 is formed on the front end face of the second outer ring 22; the second rear inner convex ring 27 is formed on the rear end face of the second inner ring 21, and the first front outer convex ring 14 is formed on the rear end face of the second outer ring 22.

[0046] The front end face of the second support ring 2 is provided with a plurality of locking protrusions 20. The locking protrusions 20 are inserted between the first inner ring 11 and the first outer ring 12. The locking protrusions 20 are used to restrict the relative rotation of the second support ring 2 and the first support ring 1. At least two of the locking protrusions 20 are locked on both sides of the reinforcing ribs 3 of the first support ring 1, so that the second support ring 2 and the first support ring 1 cannot rotate relative to each other. The upper end face of the second intermediate ring 23 and located between the second inner ring 21 and the second outer ring 22 is provided with a plurality of reinforcing ribs 3. The lower end face of the second intermediate ring 23 and located between the second inner ring 21 and the second outer ring 22 is also provided with a plurality of reinforcing ribs 3. The reinforcing ribs 3 can effectively improve the connection strength between the second inner ring 21 and the second outer ring 22 and can ensure the support strength of the second support ring 2.

[0047] To ensure the roll material adheres tightly to the core, several limiting grooves 51 with a large belly and a small opening, and parallel to their respective axial directions, are respectively provided on the circumferential surfaces of the first outer ring 12 and the second outer ring 22. Elastic tension strips 52 are provided in the limiting grooves 51, and a portion of the tension strips 52 is located outside the circumferential surfaces of the first outer ring 12 and the second outer ring 22. The roll material adheres to the tension strips 52, which can make the roll material wind more tightly. Especially when the roll material is used to the last few turns, the roll material is very easy to loosen. The tension strips 52 can effectively prevent the roll material from loosening.

[0048] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A core assembly for battery coils, characterized in that: It includes several first support rings. The front end face of the first support ring has a first front inner convex ring and a first front outer convex ring that are coaxially arranged and both annular. The first front outer convex ring is located outside the first front inner convex ring. An annular first groove is formed between the first front outer convex ring and the first front inner convex ring. The rear end face of the first support ring has a first rear inner convex ring and a first rear outer convex ring that are coaxially arranged and both annular. The first rear outer convex ring is located outside the first rear inner convex ring. When two adjacent first support rings are connected end to end, the first rear outer convex ring and the first rear inner convex ring of the front first support ring are engaged in the first groove of the rear first support ring. At this time, the two adjacent first support rings are coaxially arranged.

2. The battery coil core assembly according to claim 1, characterized in that: The inner diameter of the first rear inner convex ring is not less than the outer diameter of the first front inner convex ring; the inner diameter of the first front outer convex ring is not less than the outer diameter of the first rear outer convex ring.

3. The battery coil core assembly according to claim 1, characterized in that: The first support ring includes a first inner ring, a first outer ring sleeved on the outside of the first inner ring, and a first intermediate ring connecting the first inner ring and the first outer ring.

4. The battery coil core assembly according to claim 3, characterized in that: The first front inner convex ring is formed on the front end face of the first inner ring, and the first front outer convex ring is formed on the front end face of the first outer ring; the first rear inner convex ring is formed on the rear end face of the first inner ring, and the first front outer convex ring is formed on the rear end face of the first outer ring.

5. The battery coil core assembly according to claim 3, characterized in that: Several reinforcing ribs are provided on the upper end surface of the first intermediate ring and between the first inner ring and the first outer ring; several reinforcing ribs are also provided on the lower end surface of the first intermediate ring and between the first inner ring and the first outer ring.

6. The battery coil core assembly according to claim 3, characterized in that: The core assembly further includes a second support ring. The front end face of the second support ring has a second front inner convex ring and a second front outer convex ring that are coaxially arranged and both are annular. The second front outer convex ring is located outside the second front inner convex ring. An annular second slot is formed between the second front outer convex ring and the second front inner convex ring. When the front end face of the second support ring is spliced ​​with the rear end face of the first support ring in front of it, the second slot is engaged with the first rear inner convex ring and the first rear outer convex ring on the rear end face of the first support ring. At this time, the second support ring and the first support ring are coaxially arranged.

7. The battery coil core assembly according to claim 6, characterized in that: The rear end face of the second support ring has a second rear inner convex ring and a second rear outer convex ring that are coaxially arranged and both are annular. The second rear outer convex ring is located outside the second rear inner convex ring. An annular third groove is formed between the second rear outer convex ring and the second rear inner convex ring. When the rear end face of the second support ring is spliced ​​with the rear end face of the adjacent first support ring, the first rear inner convex ring and the first rear outer convex ring of the first support ring are engaged in the third groove of the second support ring. At this time, the first support ring and the second support ring are coaxially arranged.

8. The battery coil core assembly according to claim 7, characterized in that: The second support ring includes a second inner ring, a second outer ring sleeved on the outside of the second inner ring, and a second intermediate ring connecting the second inner ring and the second outer ring.

9. The battery coil core assembly according to claim 8, characterized in that: The second front inner convex ring is formed on the front end face of the second inner ring, and the second front outer convex ring is formed on the front end face of the second outer ring; the second rear inner convex ring is formed on the rear end face of the second inner ring, and the first front outer convex ring is formed on the rear end face of the second outer ring.

10. The battery coil core assembly according to claim 7, characterized in that: The front end face of the second support ring is provided with a plurality of locking protrusions, which are inserted between the first inner ring and the first outer ring.

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