CN220652297U - Bare cell insulating sheet, insulating structure and battery - Google Patents
Bare cell insulating sheet, insulating structure and battery Download PDFInfo
- Publication number
- CN220652297U CN220652297U CN202322109210.1U CN202322109210U CN220652297U CN 220652297 U CN220652297 U CN 220652297U CN 202322109210 U CN202322109210 U CN 202322109210U CN 220652297 U CN220652297 U CN 220652297U
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- plate
- insulating sheet
- bare cell
- folded
- edge
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- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 10
- 230000002093 peripheral effect Effects 0.000 abstract description 9
- 239000002390 adhesive tape Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a bare cell insulating sheet. The insulating sheet comprises a bottom plate and side plates which are symmetrically arranged on two sides of the bottom plate respectively, two folded plates are symmetrically arranged at two ends of the side plates, a gap is formed at one end, far away from the bottom plate, of each folded plate, and the gaps on the two folded plates are symmetrically arranged about the center line of the side plate. The folding plate overlapping position of the insulating sheet is provided with the notch, so that a space is provided for installing the cover body after the bare cell insulating sheet is installed in the shell, the technical problem that the insulating sheet affects peripheral welding in the prior art is solved, the insulating sheet is ensured to provide sealing conditions for the cell, and the safety performance of the cell is further improved. The utility model also discloses an insulation structure, wherein the box body is formed by folding the bare cell insulation sheet; the two pairs of folded plates of the bare cell insulating sheet are overlapped to form two side surfaces of the box body, and the gaps of the two pairs of folded plates are overlapped to form an avoidance area. The battery is characterized in that the bare cell insulating sheet is arranged between the battery shell and the battery cell.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a bare cell insulating sheet, an insulating structure and a battery.
Background
Currently, the packaging forms of power cells fall into three broad categories: cylindrical, square, and soft packs, differ in shape, but also differ in technical development and application scenarios. The square battery has stronger plasticity and can be designed in a customized way according to the specific requirements of the carried product. In the current stage, the overlapping positions of the large battery factories are easy to be misplaced in the process of wrapping the bare cell insulating sheets. This phenomenon is more likely to occur during use of the bare cell insulating sheet. Under the condition that the overlapping positions of the insulating sheets are misplaced, the bare cell insulating sheets are subjected to hot melting treatment, so that the bare cell insulating sheets are inserted into gaps between the shell and the cover body, poor peripheral welding is caused, and the battery cells cannot be completely sealed, so that the safety performance of the battery cells is affected.
Disclosure of Invention
The utility model provides a bare cell insulating sheet, an insulating structure and a battery aiming at the technical problems.
In order to achieve the above object, the present utility model provides a technical solution comprising:
the utility model provides a naked electric core insulating piece, includes the bottom plate, sets up the curb plate in the bottom plate both sides respectively symmetrically, the both ends symmetry of this curb plate sets up two folded plates, the folded plate one end of keeping away from the bottom plate be provided with the breach, and the breach on two folded plates sets up with curb plate central line symmetry.
The folding plate overlapping position of the insulating sheet is provided with the notch, and then the folding plate is subjected to hot melting treatment, so that a space is provided for installing the cover body after the bare cell insulating sheet is arranged in the shell, the technical problem that the insulating sheet affects peripheral welding in the prior art is solved, the insulating sheet is ensured to provide sealing conditions for the cell, and the safety performance of the cell is further improved.
In the bare cell insulating sheet, the notch is a chamfer, and the chamfer is arranged on one side of the folding plate, which is opposite to the side plate. And a chamfer is arranged at the overlapping position of the folded plate of the insulating sheet, so that a space is provided for inserting the bare cell insulating sheet into the shell and the cover body, poor welding around the bare cell insulating sheet is avoided, the insulating sheet is ensured to provide sealing conditions for the cell, and the safety performance of the cell is improved.
In the bare cell insulating sheet, the chamfered wedge surface extends from the edge of the side plate to the edge of the folded plate;
alternatively, the flap has a horizontal portion flush with the end surface of the side panel and a wedge surface forming the chamfer extending from the edge of the horizontal portion to the edge of the flap. The notch is arranged at the edge of the side plate, so that a space is provided for installing the cover body after the bare cell insulating sheet is arranged in the shell. A horizontal part is arranged between the notch and the side plate, and plays a role in guiding in the process of installing the cover body.
In the bare cell insulating sheet, the notch is a step, and the height of the step is lower than that of the end face of the side plate. The step is arranged at the overlapping position of the folded plate, so that a space is provided for installing the cover body after the bare cell insulating sheet is installed in the shell, and the technical problem that the insulating sheet affects peripheral welding in the prior art is solved.
In the bare cell insulating sheet, the step surface of the step extends from the edge of the side plate to the edge of the folded plate;
alternatively, the flap has a horizontal portion flush with the end surface of the side panel and a step below the horizontal portion, the step extending from the edge of the horizontal portion to the edge of the flap.
In the bare cell insulating sheet, the notch is a notch formed by recessing an end face of a folded plate, and the folded plate is provided with a horizontal part positioned at the opening outer edge of the notch. The notch may be formed not only at the edge of the flap, but also at any location of the flap other than the edge. The shape of the recess may be rectangular, triangular or circular arc.
In another aspect of the utility model, an insulation structure is provided, which comprises a box body and a cover body, wherein the box body is formed by folding the bare cell insulation sheet;
the two pairs of folded plates of the bare cell insulating sheet are overlapped to form two side surfaces of the box body, and the gaps of the two pairs of folded plates are overlapped to form an avoidance area;
the cover body is provided with a connecting part which is matched with the avoidance area so as to weld the box body and the cover body. The material removing treatment is carried out at the folded plate overlapping position of the insulating structure, so that a space is provided for installing the cover body after the bare cell insulating sheet is installed in the shell, the peripheral welding yield is improved, and the technical problem that the insulating sheet affects peripheral welding in the prior art is solved.
In the above insulating structure, the avoiding area is rectangular or triangular.
In the above insulation structure, two opposite sides of the bottom plate are provided with sealing plates, and each side surface is formed by overlapping a pair of folded plates and a sealing plate;
an anti-offset part for preventing the folded plate and the sealing plate from being offset due to compression is arranged between the bottom plate and the side face. The anti-offset piece is used for reinforcing the installation between the folded plate and the sealing plate, and the anti-offset piece can be an adhesive tape attached to the outer sides of the bottom plate and the side surfaces.
In another aspect, the utility model also provides a battery, which contains the insulating structure.
Compared with the prior art, the utility model has the beneficial effects that:
the folding plate overlapping position of the insulating sheet is provided with the notch, and then the folding plate is subjected to hot melting treatment, so that a space is provided for installing the cover body after the bare cell insulating sheet is arranged in the shell, the technical problem that the insulating sheet affects peripheral welding in the prior art is solved, the insulating sheet is ensured to provide sealing conditions for the cell, and the safety performance of the cell is further improved.
The top of the side surface of the insulating structure is provided with the avoidance area, so that a space is provided for installing the cover body after the bare cell insulating sheet is installed in the shell, the peripheral welding yield is improved, and the technical problem that the insulating sheet affects peripheral welding in the prior art is solved.
Drawings
Fig. 1 is a schematic structural diagram of a bare cell insulating sheet according to the present utility model.
Fig. 2 is a partial enlarged view of a in fig. 1.
Fig. 3 is a schematic structural view of another structure of the bare cell insulating sheet of the present utility model.
Fig. 4 is a partial enlarged view of B in fig. 3.
Fig. 5 is a schematic structural view of another structure of the bare cell insulating sheet of the present utility model.
Fig. 6 is a partial enlarged view of C in fig. 5.
Fig. 7 is a schematic structural diagram of embodiment 1.
Fig. 8 is a partial enlarged view of D in fig. 5.
Fig. 9 is a schematic structural diagram of embodiment 2.
Fig. 10 is a partial enlarged view of E in fig. 9.
Fig. 11 is a schematic structural diagram of embodiment 3.
In the figure: the device comprises a bottom plate 1, side plates 2, folded plates 3, an avoidance area 4, a horizontal part 5, a notch 6, a sealing plate 7, side surfaces 8, adhesive tapes 9 and a hot melting point 10.
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to the attached drawings and specific embodiments.
Examples
As shown in fig. 1 and 2, the bare cell insulating sheet of the present embodiment includes a bottom plate 1, side plates 2 symmetrically disposed on two sides of the bottom plate 1, two folded plates 3 symmetrically disposed on two ends of the side plate 2, a notch 6 disposed at one end of the folded plate 3 far away from the bottom plate 1, and the notches 6 disposed on the two folded plates 3 symmetrically disposed about a center line of the side plate 2. Moreover, sealing plates 7 are arranged on opposite sides of the bottom plate, and at least two through holes 8 are symmetrically arranged on the bottom plate 1.
As shown in fig. 1 and 2, the notch 6 of the present embodiment is a chamfer provided on the side of the flap 3 facing away from the side plate 2.
In this embodiment, the wedge surface forming the chamfer 6 may extend directly from the edge of the side panel 2 to the edge of the flap 3; as shown in fig. 1 and 2, a horizontal portion 5 flush with the end surface of the side plate 2 may be provided on the side of the flap 3 adjacent to the side plate 2, and then a wedge surface forming the chamfer 6 may be provided so as to extend from the edge of the horizontal portion 5 to the edge of the flap 3.
As shown in fig. 7 and 8, an insulation structure comprises a box body and a cover body, wherein the box body is formed by folding the bare cell insulation sheet;
the two pairs of folded plates 3 of the bare cell insulating sheet are overlapped to form two side surfaces 8 of the box body, and the gaps 6 of the two pairs of folded plates 3 are overlapped to form an avoidance area 4;
the cover body is provided with a connecting part which is matched with the avoidance area 4 so as to weld the box body and the cover body. Specifically, after the two pairs of folded plates 3 of the bare cell insulating sheet are overlapped, they are fixed to each other by the hot-melt sites 10. As shown in fig. 8, the avoidance area 4 is triangular.
In the bare cell insulating sheet, two opposite sides of the bottom plate are provided with sealing plates 7. During the formation of the box, each side 8 is formed by overlapping a pair of flaps 3 and a closing plate 7;
as shown in fig. 7, an offset preventing member for preventing the flap 3 and the sealing plate 7 from being offset due to the pressing is provided between the bottom plate 1 and the side surface 8. The anti-offset part is an adhesive tape 9 attached to the outer sides of the bottom plate 1 and the side surface 8.
The working procedure of this embodiment is: the insulating structure is assembled between the battery shell and the electric core.
Examples
As shown in fig. 3 and 4, the bare cell insulating sheet of the present embodiment includes a bottom plate 1, side plates 2 symmetrically disposed on two sides of the bottom plate 1, two folded plates 3 symmetrically disposed on two ends of the side plate 2, a notch 6 disposed at one end of the folded plate 3 far away from the bottom plate 1, and the notches 6 disposed on the two folded plates 3 symmetrically disposed about a center line of the side plate 2. Moreover, sealing plates 7 are arranged on opposite sides of the bottom plate, and at least two through holes 8 are symmetrically arranged on the bottom plate 1.
As shown in fig. 3 and 4, the notch 6 of the present embodiment is a step, and the height of the step is lower than the height of the end face of the side plate 2.
In this embodiment, the step surface of the step extends from the edge of the side plate 2 to the edge of the folded plate 3; as shown in fig. 3 and 4, a horizontal portion 5 flush with the end surface of the side plate 2 may be provided on the side of the flap 3 near the side plate 2, and then a step lower than the horizontal portion 5 may be provided, and the step surface of the step extends from the edge of the horizontal portion 5 to the edge of the flap 3.
As shown in fig. 9 and 10, an insulation structure comprises a box body and a cover body, wherein the box body is formed by folding the bare cell insulation sheet;
the two pairs of folded plates 3 of the bare cell insulating sheet are overlapped to form two side surfaces 8 of the box body, and the gaps 6 of the two pairs of folded plates 3 are overlapped to form an avoidance area 4;
the cover body is provided with a connecting part which is matched with the avoidance area 4 so as to weld the box body and the cover body. Specifically, after the two pairs of folded plates 3 of the bare cell insulating sheet are overlapped, they are fixed to each other by the hot-melt sites 10. As shown in fig. 9 and 10, the avoidance area 4 is rectangular.
In the bare cell insulating sheet, two opposite sides of the bottom plate are provided with sealing plates 7. During the formation of the box, each side 8 is formed by overlapping a pair of flaps 3 and a closing plate 7;
as shown in fig. 9, an offset preventing member for preventing the flap 3 and the sealing plate 7 from being offset due to the pressing is provided between the bottom plate 1 and the side surface 8. The anti-offset part is an adhesive tape 9 attached to the outer sides of the bottom plate 1 and the side surface 8.
Examples
As shown in fig. 5 and 6, the bare cell insulating sheet of the present embodiment includes a bottom plate 1, side plates 2 symmetrically disposed on two sides of the bottom plate 1, two folded plates 3 symmetrically disposed on two ends of the side plate 2, a notch 6 disposed at one end of the folded plate 3 far away from the bottom plate 1, and the notches 6 on the two folded plates 3 symmetrically disposed about a center line of the side plate 2. Moreover, sealing plates 7 are arranged on opposite sides of the bottom plate, and at least two through holes 8 are symmetrically arranged on the bottom plate 1.
The notch 6 of this embodiment is a recess formed by recessing an end face of the flap 3, and the flap 3 has a horizontal portion at an opening outer edge of the recess. The notch may be formed not only at the edge of the flap, but also at any location of the flap other than the edge. The shape of the recess may be rectangular, triangular or circular arc.
As shown in fig. 11, an insulation structure comprises a box body and a cover body, wherein the box body is formed by folding the bare cell insulation sheet;
the two pairs of folded plates 3 of the bare cell insulating sheet are overlapped to form two side surfaces 8 of the box body, and the gaps 6 of the two pairs of folded plates 3 are overlapped to form an avoidance area 4;
the cover body is provided with a connecting part which is matched with the avoidance area 4 so as to weld the box body and the cover body. Specifically, after the two pairs of folded plates 3 of the bare cell insulating sheet are overlapped, they are fixed to each other by the hot-melt sites 10. As shown in fig. 11, the avoidance region 4 has a concave arc shape.
In the bare cell insulating sheet, two opposite sides of the bottom plate are provided with sealing plates 7. During the formation of the box, each side 8 is formed by overlapping a pair of flaps 3 and a closing plate 7;
as shown in fig. 11, an offset preventing member for preventing the flap 3 and the sealing plate 7 from being offset due to the pressing is provided between the bottom plate 1 and the side surface 8. The anti-offset part is an adhesive tape 9 attached to the outer sides of the bottom plate 1 and the side surface 8.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the embodiment of the present utility model in any way, but any simple modification, equivalent variation and modification made according to the technical spirit of the embodiment of the present utility model still fall within the scope of the technical solution of the embodiment of the present utility model.
Claims (10)
1. The utility model provides a naked electric core insulating piece, its characterized in that, includes bottom plate (1), sets up curb plate (2) in bottom plate (1) both sides respectively symmetrically, and the both ends symmetry of this curb plate (2) set up two folded plates (3), folded plate (3) keep away from the one end of bottom plate (1) and be provided with breach (6), and breach (6) on two folded plates (3) set up about curb plate (2) central line symmetry.
2. A bare cell insulating sheet according to claim 1, characterized in that the notch (6) is a chamfer provided on the side of the flap (3) facing away from the side plate (2).
3. A bare cell insulating sheet according to claim 2, wherein the chamfered wedge surface extends from the edge of the side plate (2) to the edge of the flap (3);
alternatively, the folded plate (3) is provided with a horizontal part (5) which is flush with the end surface of the side plate (2) and a wedge surface which forms the chamfer, and the wedge surface extends from the edge of the horizontal part (5) to the edge of the folded plate (3).
4. The bare cell insulating sheet according to claim 1, wherein the notch (6) is a step having a height lower than that of the end face of the side plate (2).
5. The bare cell insulating sheet according to claim 4, wherein the step surface of the step extends from the edge of the side plate (2) to the edge of the folded plate (3);
alternatively, the folded plate (3) is provided with a horizontal part (5) which is flush with the end surface of the side plate (2) and a step lower than the horizontal part (5), and the step surface of the step extends from the edge of the horizontal part (5) to the edge of the folded plate (3).
6. A bare cell insulating sheet according to claim 1, wherein the notch (6) is a recess formed by recessing an end face of the flap (3), and the flap (3) has a horizontal portion at an opening outer edge of the recess.
7. An insulation structure comprising a box body and a cover body, wherein the box body is formed by folding the bare cell insulation sheet according to any one of claims 1-6;
two pairs of folded plates (3) of the bare cell insulating sheet are overlapped to form two side faces (8) of the box body, and gaps (6) of the two pairs of folded plates (3) are overlapped to form an avoidance area (4);
the cover body is provided with a connecting part which is matched with the avoidance area (4) so as to weld the box body and the cover body.
8. Insulation structure according to claim 7, characterized in that the relief area (4) is rectangular or triangular.
9. An insulating structure as claimed in claim 7, wherein the opposite sides of the base plate are provided with sealing plates (7), each side (8) being formed by overlapping a pair of flaps (3) and a sealing plate (7);
an anti-offset part for preventing the folded plate (3) and the sealing plate (7) from being offset due to compression is arranged between the bottom plate (1) and the side surface (8).
10. A battery comprising an insulating structure according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322109210.1U CN220652297U (en) | 2023-08-07 | 2023-08-07 | Bare cell insulating sheet, insulating structure and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322109210.1U CN220652297U (en) | 2023-08-07 | 2023-08-07 | Bare cell insulating sheet, insulating structure and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220652297U true CN220652297U (en) | 2024-03-22 |
Family
ID=90264110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322109210.1U Active CN220652297U (en) | 2023-08-07 | 2023-08-07 | Bare cell insulating sheet, insulating structure and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220652297U (en) |
-
2023
- 2023-08-07 CN CN202322109210.1U patent/CN220652297U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |