CN212410316U - Lithium ion battery pole piece flexibility testing device - Google Patents
Lithium ion battery pole piece flexibility testing device Download PDFInfo
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- CN212410316U CN212410316U CN202021216608.5U CN202021216608U CN212410316U CN 212410316 U CN212410316 U CN 212410316U CN 202021216608 U CN202021216608 U CN 202021216608U CN 212410316 U CN212410316 U CN 212410316U
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- pole piece
- bottom plate
- angle scale
- hole groove
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Abstract
The utility model discloses a lithium ion battery pole piece flexibility testing device, which comprises a bottom plate, a side plate, a connecting shaft and a pole piece to be tested, wherein one end of the side plate is connected with the bottom plate through the connecting shaft, the side plate can turn over for 180 degrees around the connecting shaft, and the pole piece to be tested is pasted at the middle position when the bottom plate and the side plate are horizontally placed; the size of the pole piece to be measured distributed on the bottom plate and the side plate is the same. The center of the pole piece to be measured is positioned at the joint of the bottom plate and the side plate, and the pole piece to be measured is guaranteed to be distributed on the bottom plate and the side plate in the same size. The testing device also includes an angle scale. Keep away from one side of connecting axle on the bottom plate and be equipped with hole groove I, keep away from one side of connecting axle on the curb plate and be equipped with hole groove II, in the hole groove I of zero scale's one end fixed connection on the bottom plate on the angle scale, the angle scale other end passes II swing joint of hole groove on the curb plate, and hole groove II removes on the angle scale when the curb plate upset.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery pole piece manufacturing and pole piece coiling production, concretely relates to lithium ion battery pole piece pliability testing arrangement for whether the pliability of surveing the pole piece satisfies the production requirement.
Background
In the production process of the lithium ion battery pole piece, the pole piece is easy to crack and fall powder in the rolling and winding processes due to the use of high compaction, high coating and novel functional binder, so that the performance of the battery core is influenced. Therefore, the flexibility of the pole piece is detected in advance, whether the pole piece has abnormity such as cracking in winding or not is judged in advance, and the method has important significance for smooth production of the pole piece.
At present, a plurality of methods for detecting the flexibility of the pole piece exist, and the flexibility of the pole piece can not meet the requirement only after various problems appear in the later stage of the pole piece production. Even if some characterization means exist, most of the characterization means are directly detected by free-hand winding, so that the method is more subjective and the test is not standard. Some patents also propose to use some tooling equipment to perform quantitative detection, but the tooling is relatively complex and inconvenient to operate.
There are several patents that have tested quantitatively and qualitatively the flexibility of the pole pieces. However, the practical stress and winding condition of the pole piece in winding are difficult to simulate by the pole piece, the cracking and powder falling problems possibly occurring in winding of the pole piece are presumed only by test data and observation phenomena, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to exist not enough among the prior art, the utility model aims to provide a simple structure, convenient to use's lithium ion battery pole piece pliability testing arrangement can simulate the coiling atress condition of actual coiling in-process pole piece, can the straight tube observe the pole piece whether can the problem in actually coiling, can judge fast whether the pole piece can ftracture after coiling under the different book needle sizes.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a lithium ion battery pole piece pliability testing arrangement which characterized in that: the pole piece to be tested is pasted in the middle position when the bottom plate and the side plate are horizontally placed.
Furthermore, the size of the pole piece to be measured distributed on the bottom plate and the side plate is the same.
Furthermore, testing arrangement still includes the angle scale, is equipped with the scale on the angle scale, and the angle scale is circular-arc.
Furthermore, one end of the angle scale is connected to the bottom plate, and the other end of the angle scale is connected to the side plate.
Further, one side of keeping away from the connecting axle on the bottom plate is equipped with hole groove I, and one side of keeping away from the connecting axle on the curb plate is equipped with hole groove II, and the angle scale is connected with hole groove I, hole groove II.
Furthermore, in the hole groove I of zero scale's one end fixed connection on the bottom plate on the angle scale, the angle scale other end passes II swing joint in the hole groove on the curb plate, and hole groove II removes on the angle scale when the curb plate upset.
Further, the bottom plate and the side plate are horizontally placed, the pole piece to be measured is pasted in the middle position, the side plate is lifted up, the pole piece to be measured slowly turns towards the bottom plate, the pole piece to be measured is gradually bent until the pole piece to be measured cracks, and the angle corresponding to the angle scale is read.
Adopt the utility model discloses technical scheme's advantage does:
1. the utility model discloses a lithium ion battery pole piece pliability testing arrangement, to the pole piece of different sizes and different toughness, all can be convenient and fast measure the bending angle of pole piece, through to the bending angle quantization judge the size of pole piece pliability, realize quantifying the flexibility of pole piece; and the stress condition of the winding R angle of the battery cell can be truly reflected, so that the safety risk of the pole piece in the winding process can be effectively reduced, and the yield of the battery cell is improved.
2. The utility model discloses a lithium ion battery pole piece pliability testing arrangement can simulate the coiling atress condition of actual coiling in-process pole piece, can the straight tube observe the pole piece can the problem whether can appear in actual coiling, can judge fast whether the pole piece can ftracture after coiling under the different book needle sizes, provides support for electric core smooth production.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a schematic front view of the testing device of the present invention;
FIG. 2 is a schematic top view of the testing device of the present invention;
fig. 3 is a schematic structural diagram of the testing device of the present invention during operation.
The labels in the above figures are respectively: 1. a base plate; 2. a side plate; 3. an angle scale; 4. a connecting shaft; 51. a hole groove I; 52. a hole groove II; 6. and (5) pole pieces to be tested.
Detailed Description
In the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "plane direction", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 and 2, a lithium ion battery pole piece flexibility testing device comprises a bottom plate 1, a side plate 2, a connecting shaft 4 and a pole piece 6 to be tested, wherein one end of the side plate 2 is connected with the bottom plate 1 through the connecting shaft 4, the side plate 2 can be turned over for 180 degrees around the connecting shaft 4, and the pole piece 6 to be tested is adhered to the middle position of the bottom plate 1 and the side plate 2 when the two are horizontally placed; the size of the pole piece 6 to be measured distributed on the bottom plate 1 and the side plate 2 is the same. The center of the pole piece 6 to be measured is located at the joint of the bottom plate 1 and the side plate 2, and the pole piece 6 to be measured is guaranteed to be distributed on the bottom plate 1 and the side plate 2 in the same size.
The testing device further comprises an angle scale 3, scales are arranged on the angle scale 3, and the angle scale 3 is arc-shaped. One end of the angle scale 3 is connected on the bottom plate 1, and the other end of the angle scale 3 is connected on the side plate 2.
One side of keeping away from connecting axle 4 on bottom plate 1 is equipped with hole groove I51, and the one side of keeping away from connecting axle 4 on curb plate 2 is equipped with hole groove II 52, and angle scale 3 is connected with hole groove I51, hole groove II 52. In the one end fixed connection of zero scale on angle scale 3 on the bottom plate 1 hole groove I51, the 3 other ends of angle scale pass the II 52 swing joint in the hole groove on curb plate 2, and hole groove II 52 removes on angle scale 3 when 2 upsets of curb plate.
The bottom plate 1 and the side plate 2 are horizontally placed, the pole piece 6 to be measured is pasted in the middle position, the side plate 2 is lifted up, the pole piece 6 to be measured is slowly turned over towards the bottom plate 1, the pole piece 6 to be measured is gradually bent until the pole piece is cracked, and the angle corresponding to the angle scale 3 is read.
The utility model discloses testing arrangement's operation process does: selecting the pole pieces with consistent appearance, and cutting the pole pieces with the same size (20X 100 mm)2) 3-5 pieces of strip-shaped pole pieces. Two pieces of 3M glue (20X 30 mm) were taken2) After the pole pieces are respectively adhered to the back surfaces of the two ends of the pole piece, the pole pieces are horizontally adhered to the centers of the bottom plate and the side plates, the sizes of the two sides are ensured to be the same, then the side plates are lifted up and slowly turned over towards the bottom plate, the pole pieces are gradually bent until the moment of cracking is stopped, the angle corresponding to the angle scale is recorded, and the larger the bending angle is, the better the flexibility of the pole pieces is. And 3-5 slices are measured simultaneously, and the average value is taken.
The utility model discloses a lithium ion battery pole piece pliability testing arrangement, to the pole piece of different sizes and different toughness, all can be convenient and fast measure the bending angle of pole piece, through to the bending angle quantization judge the size of pole piece pliability, realize quantifying the flexibility of pole piece; and the stress condition of the winding R angle of the battery cell can be truly reflected, so that the safety risk of the pole piece in the winding process can be effectively reduced, and the yield of the battery cell is improved.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without the technical solutions of the present invention, or the present invention can be directly applied to other occasions without the improvements, and all are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a lithium ion battery pole piece pliability testing arrangement which characterized in that: the pole piece testing device comprises a bottom plate (1), side plates (2), a connecting shaft (4) and pole pieces (6) to be tested, wherein one end of each side plate (2) is connected with the bottom plate (1) through the connecting shaft (4), the side plates (2) can be turned over for 180 degrees around the connecting shaft (4), and the pole pieces (6) to be tested are pasted in the middle position when the bottom plate (1) and the side plates (2) are horizontally placed.
2. The lithium ion battery pole piece flexibility testing device of claim 1, characterized in that: the size of the pole piece (6) to be measured distributed on the bottom plate (1) and the side plate (2) is the same.
3. The lithium ion battery pole piece flexibility testing device of claim 2, characterized in that: the testing device further comprises an angle scale (3), scales are arranged on the angle scale (3), and the angle scale (3) is arc-shaped.
4. The lithium ion battery pole piece flexibility testing device of claim 3, characterized in that: one end of the angle scale (3) is connected to the bottom plate (1), and the other end of the angle scale (3) is connected to the side plate (2).
5. The lithium ion battery pole piece flexibility testing device of claim 4, wherein: one side of the bottom plate (1) far away from the connecting shaft (4) is provided with a hole groove I (51), one side of the side plate (2) far away from the connecting shaft (4) is provided with a hole groove II (52), and the angle scale (3) is connected with the hole groove I (51) and the hole groove II (52).
6. The lithium ion battery pole piece flexibility testing device of claim 5, characterized in that: in the hole groove I (51) of zero scale's one end fixed connection on bottom plate (1) on angle scale (3), hole groove II (52) swing joint on curb plate (2) is passed to angle scale (3) other end, and hole groove II (52) move on angle scale (3) when curb plate (2) upset.
7. The lithium ion battery pole piece flexibility testing device of claim 6, characterized in that: the bottom plate (1) and the side plates (2) are horizontally placed, the pole piece (6) to be tested is pasted in the middle position, the side plates (2) are lifted up, the pole piece (6) to be tested is slowly turned over to the bottom plate (1), the pole piece (6) to be tested is gradually bent until the pole piece is cracked, and the angle corresponding to the angle scale (3) is read.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021216608.5U CN212410316U (en) | 2020-06-28 | 2020-06-28 | Lithium ion battery pole piece flexibility testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021216608.5U CN212410316U (en) | 2020-06-28 | 2020-06-28 | Lithium ion battery pole piece flexibility testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212410316U true CN212410316U (en) | 2021-01-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021216608.5U Active CN212410316U (en) | 2020-06-28 | 2020-06-28 | Lithium ion battery pole piece flexibility testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212410316U (en) |
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2020
- 2020-06-28 CN CN202021216608.5U patent/CN212410316U/en active Active
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