CN220961177U - Current collector stripping force testing device - Google Patents
Current collector stripping force testing device Download PDFInfo
- Publication number
- CN220961177U CN220961177U CN202322799043.8U CN202322799043U CN220961177U CN 220961177 U CN220961177 U CN 220961177U CN 202322799043 U CN202322799043 U CN 202322799043U CN 220961177 U CN220961177 U CN 220961177U
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- Prior art keywords
- current collector
- sample
- hot melt
- testing device
- melt adhesive
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000003825 pressing Methods 0.000 claims abstract description 38
- 239000004831 Hot glue Substances 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 claims description 33
- 239000012943 hotmelt Substances 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000004484 Briquette Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000002390 adhesive tape Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of production of current collector detection devices, in particular to a current collector peeling force testing device which comprises a base, a sample table, a pressure mechanism and a testing mechanism, wherein the base is provided with a plurality of sample holders; the sample platform is arranged above the base and is used for placing a composite current collector sample to be tested; the pressure mechanism comprises a pressing block and a driving mechanism for driving the pressing block to move up and down, and is used for flattening the hot melt adhesive and solidifying after heating the melt adhesive on the surface of the current collector; the testing mechanism is used for measuring the stripping force of the hot melt adhesive for stripping the metal conductive layer from the composite current collector base film. The current collector stripping force testing device solves the problem that the existing method is difficult to accurately detect the stripping force between the current collector base film and the conductive layer.
Description
Technical Field
The utility model relates to the technical field of production of current collector detection devices, in particular to a current collector stripping force testing device.
Background
Current collectors refer to structures or parts that collect current, which function to collect current, and are mainly used in electrochemical devices, particularly lithium ion batteries. The composite current collector is a novel current collector plated with metal on the surface of a polymer base film, and has the advantages of improving safety, improving energy density and the like when used in a lithium battery.
At present, the composite current collector is faced with the problem of poor binding force between the high polymer base film and the metal conducting layer, and the falling of the conducting layer may influence the normal use of the composite current collector. Therefore, it is desirable to measure the peel force between the base film and the conductive layer of the composite current collector product. The existing test method is to attach an adhesive tape to the surface of a composite current collector, and then measure the force required to tear the adhesive tape as peel force data. However, the adhesive force between the adhesive tape and the metal layer is limited, the adhesive tape cannot completely tear the conductive layer, and the adhesive force of the adhesive tape may be uneven, so that the peeling force is not accurate.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model provides a current collector peeling force testing device, which solves the problem that the peeling force between a current collector base film and a conductive layer is difficult to accurately detect by the existing method.
The technical scheme adopted for solving the technical problems is as follows:
A collector stripping force testing device comprises a base, a sample table, a pressure mechanism and a testing mechanism;
the sample platform is arranged above the base and is used for placing a composite current collector sample to be tested;
The pressure mechanism comprises a pressing block and a driving mechanism for driving the pressing block to move up and down, and is used for flattening the hot melt adhesive and solidifying after heating the melt adhesive on the surface of the current collector;
the testing mechanism is used for measuring the stripping force of the hot melt adhesive for stripping the metal conductive layer from the composite current collector base film.
In the structure, the test mechanism is a mechanical sensor, the detection end of the mechanical sensor is connected with the pressing block through a connector, the connector is detachably connected with the mechanical sensor, and the other end of the mechanical sensor is connected with the output end of the driving mechanism.
In the structure, a supporting arm is fixedly connected to the base, a mounting ring is sleeved on the outer ring of the supporting arm, a supporting table is fixedly installed on one side of the mounting ring, a second motor is arranged on the supporting table, the output end of the second motor is connected with a glue gun used for dripping melted hot melt glue on the surface of the current collector, and the mounting ring is connected with the surface of the current collector in a rotating mode around the supporting arm, so that the glue gun is driven to rotate.
In the structure, the baffle is arranged in the glue gun, and the second motor is used for pushing the baffle to extrude the hot melt adhesive to drop on the surface of the current collector.
In the structure, one side of the supporting arm is fixedly connected with a supporting plate, the driving mechanism is installed on the supporting plate, and the driving mechanism is a first motor.
In the structure, at least 4 clamps for clamping four corners of the composite current collector sample are arranged on the sample table.
In the structure, 4 clamps for clamping four corners of the composite current collector sample are arranged on the sample table.
In the structure, the base is provided with the movable seat, a lifting rod is arranged between the movable seat and the sample table, and the lifting rod is movably arranged on the movable seat.
In the structure, the pressing blocks are arranged above the sample table in parallel, and grooves or protrusions used for limiting the hot melt adhesive are formed in the surface, facing the sample table, of the pressing blocks.
In the structure, the material of the pressing block is aluminum alloy or stainless steel with the surface frosted.
The beneficial effects of the utility model are as follows: according to the device for testing the stripping force of the current collector, the binding force between the hot melt adhesive and the conductive layer is necessarily larger than the binding force between the conductive layer and the base film, so that the hot melt adhesive can strip the conductive layer from the base film integrally, the average stripping force of a certain area between the conductive layer and the base film of the composite current collector is measured more accurately, and the obtained stripping force data is more reliable.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present utility model;
Fig. 2 is a top view of the structure of the present utility model.
Wherein: the device comprises a 1-base, a 2-sample stage, a 3-pressing block, a 4-driving mechanism, a 5-support plate, a 6-mechanical sensor, a 7-connector, an 11-moving seat, a 12-lifting rod, a 13-support arm, a 14-mounting ring, a 15-support stage, a 16-second motor, a 17-glue gun and a 21-clip.
Detailed Description
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.
The utility model provides a collector stripping force testing device, as shown in fig. 1 and 2, comprising a base 1, a sample table 2, a pressure mechanism and a testing mechanism;
The base 1 is provided with a movable seat 11, a lifting rod 12 is arranged between the movable seat 11 and the sample table 2, the lifting rod is movably arranged on the movable seat, and the lifting rod 12 can lift on the movable seat 11 and can also move in the horizontal direction; the base 1 is fixedly connected with a supporting arm 13, the supporting arm 13 is cylindrical, a mounting ring 14 is sleeved on the outer ring of the supporting arm 13, and a supporting table 15 is fixedly arranged on one side of the mounting ring 14; the second motor 16 is arranged on the supporting table 15, the output end of the second motor 16 is connected with a glue gun 17 for dripping melted hot melt glue on the surface of the current collector, the mounting ring 14 is rotationally connected around the supporting arm 13 so as to drive the glue gun 17 to rotate, the glue gun 17 is used for melting the hot melt glue, and the glue gun opening is aligned with the center of the sample table, when the device is used, the melted hot melt glue is dripped on the surface of the current collector through the glue gun 17, after the glue gun 17 is dripped, the glue gun 17 is rotated to give off the middle area of the sample table, the blocking to the pressing area of the pressing block is avoided, and the rotation mode can be manual or a mechanism for arranging the electric driving mounting ring 14 on the supporting arm 13; the glue gun 17 is internally provided with a structure similar to an injector, a baffle is arranged in the glue gun 17, the baffle is pushed by the second motor 16 to extrude the hot melt adhesive to drop on the surface of the current collector, and the distance that the second motor 16 pushes the baffle each time is controlled to be certain, so that the quantity of the hot melt adhesive extruded by the glue gun 17 each time is fixed, for example, the quantity of the hot melt adhesive extruded is set to be 1mL.
The sample platform 2 is arranged above the base 1 and is used for placing a composite current collector sample to be tested, at least 4 clamps 21 used for clamping four corners of the composite current collector sample are arranged on the sample platform 2, the sample is fixed on the sample platform 2, in the structure, 4 clamps 21 used for clamping four corners of the composite current collector sample are arranged on the sample platform 2, and the clamps 21 are fixed on the sample platform 2 at intervals.
The pressure mechanism comprises a pressing block 3 and a driving mechanism 4 for driving the pressing block 3 to move up and down, the driving mechanism is used for pressing hot melt adhesive flat and solidifying after the hot melt adhesive is dripped on the surface of a current collector, one side of the supporting arm 13 is fixedly connected with a supporting plate 5, the driving mechanism 4 is arranged on the supporting plate 5, and the driving mechanism 4 is a first motor; the pressing blocks 3 are arranged above the sample table 2 in parallel, after the hot melt adhesive is dripped on the surface of the composite current collector, the driving mechanism 4 drives the pressing blocks 3 to downwards press, the pressing blocks 3 extrude the hot melt adhesive on the surface of the composite current collector evenly, in the embodiment, the pressing blocks 3 are made of aluminum alloy or stainless steel and other materials with rough surfaces after surface frosting treatment, and the hot melt adhesive can be firmly adhered on the pressing blocks 3, so that the falling between the pressing blocks 3 and the hot melt adhesive is prevented from affecting the test result; the briquetting 3 is detachably arranged, after the test is finished, the briquetting 3 can be replaced and then the next measurement is started, and after the replaced briquetting 3 cleans the hot melt adhesive on the surface, the briquetting can be reused. The pressing block 3 is arranged in a detachable structure, so that the pressing block 3 is convenient to clean, the pressing block 3 can be replaced after one test is finished, and the next test can be quickly performed; in this embodiment, the surface of the pressing block 3 facing the sample stage 2 is provided with a groove or a protrusion for limiting the hot melt adhesive, and the hot melt adhesive is limited in a range limited by the groove or the protrusion, so that the area of the flattened hot melt adhesive is kept equal.
The testing mechanism is used for measuring the stripping force of the hot melt adhesive stripping the metal conducting layer from the composite current collector base film, in the embodiment, the testing mechanism is a mechanical sensor 6, the detection end of the mechanical sensor 6 is connected with the pressing block 3 through a connector 7, the connector 7 is detachably connected with the mechanical sensor 6, the other end of the mechanical sensor 6 is connected with the output end of the driving mechanism 4, and in the embodiment, the mechanical sensor 6 can detect the pressure and the tensile force of the pressing block 3 at the same time. When the pressing block 3 is pressed down, the mechanical sensor 6 stops pressing down when detecting that the pressure reaches a set value, when the pressing block 3 is lifted up, the mechanical sensor 6 can detect the pulling force of the pressing block 3, then the data of the mechanical sensor 6 are transmitted to a computer, and according to a pulling force curve when the pressing block 3 is lifted up, the peak value of the pulling force is the stripping force of the current collector base film and the conducting layer.
Working principle:
Placing a current collector sample on a sample table, clamping four corners of the sample through four clamps, fixing the sample on the sample table, rotating a glue gun to enable a glue gun port to be aligned to the center of the sample table, driving a second motor, dripping melted hot melt glue on the surface of the current collector through the glue gun, after glue dripping of the glue gun is completed, enabling the glue gun to be discharged out of the middle area of the sample table, driving a pressing block to press downwards through driving the first motor, extruding the hot melt glue on the surface of the current collector, enabling the hot melt glue to be flatly paved on the surface of the current collector, waiting for the hot melt glue to cool down and solidify, and when a mechanical sensor detects that the pressure reaches a set value, driving the pressing block to rise, peeling off a conductive layer from a base film, and simultaneously testing and recording peeling force by the mechanical sensor, so that peeling force between the conductive layer and the base film of the current collector can be accurately measured.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. The collector stripping force testing device is characterized by comprising a base, a sample table, a pressure mechanism and a testing mechanism;
the sample platform is arranged above the base and is used for placing a composite current collector sample to be tested;
The pressure mechanism comprises a pressing block and a driving mechanism for driving the pressing block to move up and down, and is used for flattening the hot melt adhesive and solidifying the hot melt adhesive after the hot melt adhesive is dripped on the surface of the current collector;
the testing mechanism is used for measuring the stripping force of the hot melt adhesive for stripping the metal conductive layer from the composite current collector base film.
2. The current collector peeling force testing device according to claim 1, wherein the testing mechanism is a mechanical sensor, a detection end of the mechanical sensor is connected with the pressing block through a connector, the connector is detachably connected with the mechanical sensor, and the other end of the mechanical sensor is connected with an output end of the driving mechanism.
3. The collector peeling force testing device according to claim 1, wherein the base is fixedly connected with a supporting arm, an outer ring of the supporting arm is sleeved with a mounting ring, one side of the mounting ring is fixedly provided with a supporting table, a second motor is arranged on the supporting table, an output end of the second motor is connected with a glue gun used for dripping melted hot melt glue on the surface of the collector, and the mounting ring is connected with the supporting arm in a rotating mode, so that the glue gun is driven to rotate.
4. A collector peel force testing device according to claim 3, wherein a baffle is arranged in the glue gun, and the baffle is pushed by a second motor to extrude hot melt glue to drop on the surface of the collector.
5. A collector peel force testing device according to claim 3 wherein one side of said support arm is fixedly connected to a support plate, said drive mechanism is mounted on said support plate, said drive mechanism is a first motor.
6. The current collector peeling force testing device according to claim 1, wherein at least 4 clamps for clamping four corners of the composite current collector sample are arranged on the sample table.
7. The current collector peeling force testing device according to claim 6, wherein 4 clamps for clamping four corners of the composite current collector sample are arranged on the sample table.
8. The device for testing the stripping force of the current collector according to claim 1, wherein a movable seat is arranged on the base, a lifting rod is arranged between the movable seat and the sample stage, and the lifting rod is movably arranged on the movable seat.
9. The current collector peeling force testing device according to claim 1, wherein the pressing blocks are arranged above the sample table in parallel, and grooves or protrusions for limiting the hot melt adhesive are formed in the surface of the pressing blocks facing the sample table.
10. A collector peeling force testing device according to any one of claims 1 to 9, wherein the material of the briquette is aluminum alloy or stainless steel after surface frosting treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799043.8U CN220961177U (en) | 2023-10-18 | 2023-10-18 | Current collector stripping force testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799043.8U CN220961177U (en) | 2023-10-18 | 2023-10-18 | Current collector stripping force testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220961177U true CN220961177U (en) | 2024-05-14 |
Family
ID=91006823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322799043.8U Active CN220961177U (en) | 2023-10-18 | 2023-10-18 | Current collector stripping force testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220961177U (en) |
-
2023
- 2023-10-18 CN CN202322799043.8U patent/CN220961177U/en active Active
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