CN210090174U - Lithium battery pole piece bending strength contrast testing device - Google Patents
Lithium battery pole piece bending strength contrast testing device Download PDFInfo
- Publication number
- CN210090174U CN210090174U CN201920389786.9U CN201920389786U CN210090174U CN 210090174 U CN210090174 U CN 210090174U CN 201920389786 U CN201920389786 U CN 201920389786U CN 210090174 U CN210090174 U CN 210090174U
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- Prior art keywords
- pole piece
- clamp
- bending strength
- lithium battery
- battery pole
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- 238000005452 bending Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 239000013543 active substance Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a pair of lithium battery pole piece bending strength contrast test device, include: the device comprises a support, a sliding frame, a first clamp, a rotary table and a second clamp; the sliding frame is arranged on the bracket in a vertically moving mode, and the first clamp is arranged on the sliding frame and used for clamping the pole piece from the vertical direction; the rotary table is rotatably arranged on the support on a vertical surface, and the second clamp is arranged on the end surface of the rotary table and is used for clamping the pole piece from the horizontal direction; in the horizontal direction, the second clamp and the first clamp are positioned on the same side of the turntable. The utility model provides a pair of lithium battery pole piece bending strength contrast testing arrangement, combination easy operation, the test result is obvious, is favorable to when testing in batches, and the reliability of bending strength test contrast under the same position same tension is guaranteed to the inside tensile uniformity of accurate control pole piece.
Description
Technical Field
The utility model relates to a battery pole piece test technical field especially relates to a lithium battery pole piece bending strength contrast test device.
Background
The bending strength of the pole piece is a test for comparing the bonding effect of different types or proportions of binders on foil, and the bonding effect influences whether the material falls in the subsequent preparation process of the pole piece. The bonding strength is too low, and the material area is easy to fall off when the pole piece is subjected to roller stress such as coating, rolling, laser cutting and the like; after the pole piece is wound, hot pressing is carried out, and the foil is easily separated from active substances at the bent part of the pole piece with a plurality of folds inside; in the subsequent battery charging and discharging and transferring processes, the active substances are separated and dispersed, so that the battery is short-circuited and the like. The adhesive has a large proportion, the adhesive effect is enhanced, the bending strength is high, but the proportion of active substances is reduced, and the capacity is reduced. And proper adhesives and proportion can be selected according to the comparison of the bending strength test of the pole piece.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a lithium-ion battery pole piece bending strength contrast test device.
The utility model provides a pair of lithium battery pole piece bending strength contrast test device, include: the device comprises a support, a sliding frame, a first clamp, a rotary table and a second clamp;
the sliding frame is arranged on the bracket in a vertically moving mode, and the first clamp is arranged on the sliding frame and used for clamping the pole piece from the vertical direction;
the rotary table is rotatably arranged on the support on a vertical surface, and the second clamp is arranged on the end surface of the rotary table and is used for clamping the pole piece from the horizontal direction; in the horizontal direction, the second clamp and the first clamp are positioned on the same side of the turntable.
Preferably, the bracket comprises a bottom plate and a threaded rotating rod; the threaded rotating rod is vertically and rotatably arranged on the bottom plate, and the sliding frame is sleeved on the threaded rotating rod and is in threaded rotary connection with the threaded rotating rod.
Preferably, the stent further comprises: the first connecting rod is vertically installed on the bottom plate, and the second connecting rod is connected between the first connecting rod and the threaded rotating rod and horizontally arranged.
Preferably, the sliding frame slides under the second link.
Preferably, the first clamp comprises a first base, a first fixing plate, a first sliding plate, a first fixing seat and a first screw rod; first fixed plate and the equal fixed mounting of first fixing base are on first base, first screw rod pass first fixing base installation and with first fixing base screw thread swivelling joint, first slide is installed between first fixing base and first fixed plate with sliding in first screw rod extension direction, first slide perpendicular to first screw rod length direction is parallel to first fixed plate.
Preferably, the device further comprises a push-pull force meter, wherein the push-pull force meter is arranged on the sliding frame, and the first clamp is arranged on the push-pull force meter.
Preferably, the second clamp comprises a second base, a second fixing plate, a second sliding plate, a second fixing seat and a second screw rod; the second fixing plate and the second fixing seat are fixedly mounted on the second base, the second screw rod penetrates through the second fixing seat to be mounted and is in threaded rotary connection with the second fixing seat, the second sliding plate is slidably mounted between the second fixing seat and the second fixing plate in the extending direction of the second screw rod, and the second sliding plate is perpendicular to the length direction of the second screw rod and is parallel to the second fixing plate.
Preferably, the second base is integrally formed with the turntable.
Preferably, still include the motor, the motor is installed on the support, and the carousel is installed on the motor output shaft, and the motor is used for driving the carousel and rotates.
Preferably, the second clamp is located at the center of the turntable.
The utility model provides a lithium battery pole piece bending strength contrast test device, through first anchor clamps and second anchor clamps centre gripping pole piece, then adjust the internal tension of pole piece through the upper and lower position of adjusting first anchor clamps, be favorable to when testing in batches, the tensile uniformity in accurate control pole piece inside.
The utility model discloses in, through rotatory carousel in order to twist reverse the pole piece, guarantee the reliability of pole piece bending strength test contrast under the same position same tension, simultaneously the utility model discloses still avoided among the test procedure pole piece and other equipment contact friction to fall the material.
The utility model provides a pair of lithium-ion battery pole piece bending strength contrast test device, combination easy operation, the test result is obvious.
Drawings
Fig. 1 is a structural diagram of a device for testing bending strength contrast of a lithium battery pole piece according to the present invention;
fig. 2 is a structural view of the first jig of fig. 1.
The figure is as follows: the device comprises a push-pull dynamometer 1, a motor 2, a rotary table 3, a first clamp 4, a second clamp 5, a sliding frame 6, a bottom plate 7, a threaded rotating rod 8, a first connecting rod 9, a second connecting rod 10, a first base 41, a first fixing plate 42, a first sliding plate 43, a first fixing seat 44 and a first screw 45.
Detailed Description
Referring to fig. 1, the utility model provides a lithium battery pole piece bending strength contrast test device, include: support, carriage 6, first anchor clamps 4, carousel 3 and second anchor clamps 5.
A carriage 6 is mounted on the support to move up and down, and a first clamp 4 is mounted on the carriage 6 and is used to clamp the pole piece from the vertical.
The rotary table 3 is arranged on the bracket in a way of rotating on a vertical plane, and the second clamp 5 is arranged on the end face of the rotary table 3 and is used for clamping the pole piece from the horizontal direction. Horizontally, the second clamp 5 and the first clamp 4 are located on the same side of the turntable 3.
Thus, firstly, the turntable 3 can be rotated to enable the second clamp 5 and the first clamp 4 to be positioned on the same plane, then the sliding frame 6 is slid to move the first clamp 4 upwards, then the first clamp 4 clamps the top end of the pole piece, and the second clamp 5 clamps the bottom of the pole piece from the horizontal direction; then the sliding frame 6 is moved upwards to straighten the pole pieces; then, the rotary table 3 is rotated, so that the second clamp 5 drives the bottom of the pole piece to twist along with the rotary table 3, and the pole piece is conveniently subjected to bending test.
Specifically, in the embodiment, when the pole piece is tested, the turntable 3 may be rotated 90 ° clockwise at a constant speed and then rotated 90 ° counterclockwise to return to the initial position, and then rotated 90 ° counterclockwise at a constant speed and then rotated 90 ° clockwise to return to the initial position. And circulating in such a way until the pole piece is damaged, and then counting the bending times to judge the bending strength of the pole piece, wherein the bending strength is larger as the bending times are more. During specific testing, the bending strength can be judged by bending the pole piece for certain times and observing the material falling condition of the material area.
Specifically, in this embodiment, the support is further provided with a motor 2, the turntable 3 is mounted on an output shaft of the motor 2, and the motor 2 is used for driving the turntable 3 to rotate. So, when testing pole piece bending strength, the positive and negative rotation of accessible motor drives carousel 3 and rotates. Specifically, in this embodiment, in order to ensure that the pole piece is received uniformly in the process of bending the pole piece driven by the rotation of the turntable 3, the second fixture 5 is located at the center of the turntable 3.
In the embodiment, the device further comprises a push-pull force meter 1, wherein the push-pull force meter 1 is arranged on the sliding frame 6, and the first clamp 4 is arranged on the push-pull force meter 1. Therefore, after the pole piece is clamped by the first clamp 4 and the second clamp, the change of the internal tension of the pole piece can be measured by the push-pull dynamometer 1 in the process of adjusting the internal tension of the pole piece by moving the sliding frame 6, so that the upward moving position of the sliding frame 6 can be accurately controlled, and the internal tension of the pole piece can be accurately controlled.
In this embodiment, the bracket includes a base plate 7 and a screw spindle 8. The threaded rotating rod 8 is vertically and rotatably arranged on the bottom plate 7, and the sliding frame 6 is sleeved on the threaded rotating rod 8 and is in threaded rotary connection with the threaded rotating rod 8. In this way, the up-down position of the carriage 6 can be adjusted by the rotation of the carriage 6 relative to the screw 8. Specifically, when the first clamp 4 does not clamp the pole piece, the sliding frame 6 can be rotated to adjust up and down; after the first clamp 4 clamps the pole piece, the horizontal position of the sliding frame 6 can be fixed, and the upper position and the lower position of the first clamp 4 are adjusted by rotating the threaded rotating rod 8.
The support still includes: the screw thread rotating rod comprises a first connecting rod 9 and a second connecting rod 10, wherein the first connecting rod 9 is vertically arranged on the bottom plate 7, and the second connecting rod 10 is connected between the first connecting rod 9 and the screw thread rotating rod 8 and is horizontally arranged. Therefore, the first connecting rod 9, the second connecting rod 10, the threaded rotating rod 8 and the bottom plate 7 form a rectangular structure, and the reliability of vertical rotation installation of the threaded rotating rod 8 is guaranteed. Specifically, the top of the threaded rotating rod 8 passes through the second connecting rod 10 and is in smooth connection with the second connecting rod 10. The particular threaded rotating rod 8 is vertically stationary relative to the second connecting rod 10.
In this embodiment, the sliding frame 6 slides under the second link 10 to avoid the second link 10 interfering with the first clamp 4 to clamp the pole piece.
In the present embodiment, the first jig 4 includes a first base 41, a first fixing plate 42, a first slide plate 43, a first fixing seat 44, and a first screw 45. The first fixing plate 42 and the first fixing seat 44 are both fixedly installed on the first base 41, the first screw 45 penetrates through the first fixing seat 44 to be installed and is in threaded rotary connection with the first fixing seat 44, the first sliding plate 43 is installed between the first fixing seat 44 and the first fixing plate 42 in a sliding mode in the extending direction of the first screw 45, and the first sliding plate 43 is perpendicular to the length direction of the first screw 45 and is parallel to the first fixing plate. Thus, the position of the first slide plate 43 relative to the first fixing plate 42 is adjusted by rotating the first screw 45, so that the pole piece is sandwiched by the first slide plate 43 and the first fixing plate 42.
In the same way, the second clamp 5 comprises a second base, a second fixing plate, a second sliding plate, a second fixing seat and a second screw rod. The second fixing plate and the second fixing seat are fixedly mounted on the second base, the second screw rod penetrates through the second fixing seat to be mounted and is in threaded rotary connection with the second fixing seat, the second sliding plate is slidably mounted between the second fixing seat and the second fixing plate in the extending direction of the second screw rod, and the second sliding plate is perpendicular to the length direction of the second screw rod and is parallel to the second fixing plate.
In this embodiment, the second base and the turntable 3 are integrally formed to simplify the mounting structure of the turntable 3 and the second clamp 5.
The above description is only the specific implementation of the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be in the technical scope of the present invention, and according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a lithium battery pole piece bending strength contrast testing arrangement which characterized in that includes: the device comprises a support, a sliding frame (6), a first clamp (4), a rotary table (3) and a second clamp (5);
the sliding frame (6) is arranged on the bracket in a vertically moving mode, and the first clamp (4) is arranged on the sliding frame (6) and used for clamping the pole piece from the vertical direction;
the rotary table (3) is rotatably arranged on the support on a vertical plane, and the second clamp (5) is arranged on the end face of the rotary table (3) and is used for clamping the pole piece from the horizontal direction; in the horizontal direction, the second clamp (5) and the first clamp (4) are positioned on the same side of the turntable (3).
2. The lithium battery pole piece bending strength contrast testing device according to claim 1, characterized in that the bracket comprises a bottom plate (7) and a threaded rotating rod (8); the thread rotating rod (8) is vertically and rotatably arranged on the bottom plate (7), and the sliding frame (6) is sleeved on the thread rotating rod (8) and is in threaded rotary connection with the thread rotating rod (8).
3. The lithium battery pole piece bending strength contrast testing device of claim 2, wherein the support further comprises: the screw thread rotating rod comprises a first connecting rod (9) and a second connecting rod (10), wherein the first connecting rod (9) is vertically installed on a bottom plate (7), and the second connecting rod (10) is connected between the first connecting rod (9) and a screw thread rotating rod (8) and is horizontally arranged.
4. The lithium battery pole piece bending strength comparative testing device as claimed in claim 3, characterized in that the sliding frame (6) slides under the second connecting rod (10).
5. The lithium battery pole piece bending strength contrast testing device according to claim 1, wherein the first clamp (4) comprises a first base (41), a first fixing plate (42), a first sliding plate (43), a first fixing seat (44) and a first screw (45); first fixed plate (42) and first fixing base (44) are all fixed mounting on first base (41), first screw rod (45) pass first fixing base (44) installation and with first fixing base (44) screw thread swivelling joint, first slide (43) are installed between first fixing base (44) and first fixed plate (42) with sliding in first screw rod (45) extension direction, first slide (43) perpendicular to first screw rod (45) length direction and be on a parallel with first fixed plate.
6. The lithium battery pole piece bending strength contrast testing device according to claim 1 or 5, further comprising a push-pull force meter (1), wherein the push-pull force meter (1) is mounted on the sliding frame (6), and the first clamp (4) is mounted on the push-pull force meter (1).
7. The lithium battery pole piece bending strength contrast testing device according to claim 1, wherein the second clamp (5) comprises a second base, a second fixing plate, a second sliding plate, a second fixing seat and a second screw rod; the second fixing plate and the second fixing seat are fixedly mounted on the second base, the second screw rod penetrates through the second fixing seat to be mounted and is in threaded rotary connection with the second fixing seat, the second sliding plate is slidably mounted between the second fixing seat and the second fixing plate in the extending direction of the second screw rod, and the second sliding plate is perpendicular to the length direction of the second screw rod and is parallel to the second fixing plate.
8. The lithium battery pole piece bending strength contrast testing device according to claim 7, characterized in that the second base is integrally formed with the turntable (3).
9. The lithium battery pole piece bending strength contrast testing device according to claim 1, further comprising a motor (2), wherein the motor (2) is mounted on the support, the turntable (3) is mounted on an output shaft of the motor (2), and the motor (2) is used for driving the turntable (3) to rotate.
10. The lithium battery pole piece bending strength contrast testing device according to claim 1, characterized in that the second clamp (5) is located at the center of the turntable (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920389786.9U CN210090174U (en) | 2019-03-26 | 2019-03-26 | Lithium battery pole piece bending strength contrast testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920389786.9U CN210090174U (en) | 2019-03-26 | 2019-03-26 | Lithium battery pole piece bending strength contrast testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210090174U true CN210090174U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920389786.9U Active CN210090174U (en) | 2019-03-26 | 2019-03-26 | Lithium battery pole piece bending strength contrast testing device |
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| Country | Link |
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| CN (1) | CN210090174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029809A (en) * | 2021-03-01 | 2021-06-25 | 昆山宝创新能源科技有限公司 | Method and tool for testing hot pressing degree and electrolyte infiltration degree of battery core |
-
2019
- 2019-03-26 CN CN201920389786.9U patent/CN210090174U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029809A (en) * | 2021-03-01 | 2021-06-25 | 昆山宝创新能源科技有限公司 | Method and tool for testing hot pressing degree and electrolyte infiltration degree of battery core |
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