A pole piece peeling strength testing device
By designing an electrode peel strength testing device, a peel test can be performed on both ends of the electrode in opposite directions using a frame, a plate to be bonded, and a lifting drive. This solves the problem of inconsistent tensile angles of the electrode in the existing technology and improves the accuracy of the peel strength test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-07-10
AI Technical Summary
In existing technologies, it is difficult to achieve opposite-direction pulling angles when the electrode is stretched, resulting in inaccurate peel strength tests.
An electrode peel strength testing device was designed, including a frame, a plate to be bonded, a first clamp and a lifting driver. The plate to be bonded has a flat surface to be bonded. The first clamp can hold the other end of the electrode. The lifting driver drives the first clamp to move up and down in the vertical direction to ensure that the two ends of the electrode are subjected to opposite forces, so as to achieve a 180° peel test.
It enables accurate detection of electrode bonding strength, ensuring that the electrodes are subjected to opposite forces at both ends during testing, thus improving the accuracy and consistency of peel strength testing.
Smart Images
Figure CN224480386U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of electrode peel strength testing device, and more specifically, it relates to an electrode peel strength testing device. Background Technology
[0002] The adhesion between the battery electrode coating and the current collector, also known as peel strength, has a crucial impact on the battery's mechanical and electrochemical performance. Ideally, battery electrodes should possess strong peel strength to ensure that the active material coating does not detach from the current collector during cell manufacturing and use, thus affecting electrical performance. Current peel strength testing typically uses a tensile testing machine with a 180° peel angle. However, this method often requires manual adjustment of the bottom and top clamps to ensure the electrode is at a 180° angle, resulting in inconsistent 180° tension on the electrode. Furthermore, the tested force only represents a component of the adhesive force, thus affecting the true peel strength test. Utility Model Content
[0003] The purpose of this invention is to provide an electrode peel strength testing device to solve the technical problem in the prior art that it is difficult to achieve opposite-direction pulling when the electrode is stretched at the same angle.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an electrode peel strength testing device, comprising:
[0005] Frame;
[0006] A plate to be bonded; the plate to be bonded is disposed on the frame; one end of the plate to be bonded has a flat surface to be bonded; the flat surface to be bonded is used to bond the outer surface of one end of the U-shaped electrode sheet to be tested;
[0007] The first clamp is used to clamp the other end of the U-shaped electrode being tested;
[0008] A lifting driver is used to drive the first gripper to move vertically up and down; the lifting driver is mounted on the frame; the lifting direction of the first gripper is parallel to the plane to be glued.
[0009] Furthermore, the lifting drive includes:
[0010] Lifting platform;
[0011] A lifting mechanism is used to drive the lifting platform to move up and down; the lifting mechanism is mounted on the frame; the first clamp is mounted on the lifting platform.
[0012] Furthermore, the first clamp includes: a first base, a first clamping plate, a second clamping plate, and a first adjusting mechanism; the first base is disposed on the lifting platform, the first clamping plate is disposed on the first base, and the second clamping plate is disposed parallel to and spaced apart from the first clamping plate; the first adjusting mechanism is used to adjust the distance between the first clamping plate and the second clamping plate; a slit is formed between the first clamping plate and the second clamping plate for clamping the U-shaped electrode sheet to be tested.
[0013] Furthermore, the first adjusting mechanism includes: a first threaded hole and a first screw; the first threaded hole is formed on the second clamping plate, and the first screw is rotatably mounted on the first base around its own axis; the first screw is threadedly connected to the first threaded hole.
[0014] Furthermore, the first clamping plate and the second clamping plate are both stainless steel plates.
[0015] Furthermore, it also includes: a tension sensor; the tension sensor is located between the first base and the lifting platform, and the tension sensor is connected to the first base and the lifting platform respectively.
[0016] Furthermore, the board to be glued is a flat plate; the surface to be glued is one side of the board to be glued.
[0017] Furthermore, it also includes: a second clamp; the second clamp is disposed on the frame and used to clamp the board to be glued.
[0018] Furthermore, the second clamp includes: a second base, a first clamping member, a second clamping member, and a second adjusting mechanism; the second base is disposed on the frame, the first clamping member is disposed on the second base, and the first clamping member and the second clamping member are spaced apart; the second adjusting mechanism is used to adjust the distance between the first clamping member and the second clamping member.
[0019] The second adjusting mechanism includes: a second threaded hole and a second screw; the second threaded hole is formed on the second clamping member; the second screw is rotatably mounted on the second base; the second screw passes through the second threaded hole and is threadedly connected to the second threaded hole.
[0020] Furthermore, the lifting mechanism includes: a slide rail, a third screw, and a motor; the slide rail is mounted on the frame and extends vertically; the third screw is rotatably mounted on the frame and extends vertically; the motor drives the third screw to rotate; the motor is mounted on the frame; the lifting platform is slidably mounted on the slide rail; the lifting platform has a third threaded hole; the third screw passes through the third threaded hole and is threadedly connected to the third threaded hole.
[0021] Furthermore, it also includes: a dust cover; the dust cover is mounted on the third screw.
[0022] The beneficial effects of the electrode peel strength testing device provided by this utility model are as follows: Compared with the prior art, the electrode peel strength testing device provided by this utility model has a bonding plate on the frame, the bonding plate has a bonding plane, the outer surface of one end of the U-shaped electrode to be tested can be pasted on the bonding plane, and the first clamp can hold the other end of the U-shaped electrode to be tested; the frame is provided with a lifting driver, which can drive the first clamp to move up and down, and the moving direction of the first clamp is parallel to the bonding plane; when the outer surface of one end of the U-shaped electrode to be tested is pasted on the bonding plane, and the other end of the U-shaped electrode to be tested is held by the first clamp, during the lifting and lowering movement of the first clamp, the two ends of the U-shaped electrode to be tested can be subjected to tearing forces in opposite directions, so that the user can detect the bonding strength of the U-shaped electrode to be tested pasted on the bonding plane. Attached Figure Description
[0023] Figure 1 This is a front view of the electrode peel strength testing device provided in an embodiment of the present invention;
[0024] Figure 2 The three-dimensional electrode peel strength testing device provided in the embodiments of this utility model Figure 1 ;
[0025] Figure 3 The three-dimensional electrode peel strength testing device provided in the embodiments of this utility model Figure 2 ;
[0026] Figure 4 The three-dimensional electrode peel strength testing device provided in the embodiments of this utility model Figure 3 ;
[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0028] Figure 6 A schematic diagram of a lifting driver provided in an embodiment of this utility model.
[0029] The following are the labeling elements in the figure:
[0030] 1-Frame; 21-Board to be glued; 211-Board to be glued; 3-Lifting driver; 31-Lifting platform; 311-Third threaded hole; 32-Lifting mechanism; 321-Slide rail; 322-Third screw; 323-Motor; 4-First clamp; 41-First clamping plate; 42-Second clamping plate; 43-First adjusting mechanism; 431-First threaded hole; 432-First screw; 44-First base; 5-Second clamp; 51-First clamping component; 52-Second clamping component; 53-Second adjusting mechanism; 531-Second threaded hole; 532-Second screw; 533-Second base; 6-Dust cover; 7-U-shaped electrode to be tested; 8-Tension sensor. Detailed Implementation
[0031] It should be noted that the specific embodiments are only used to explain the present invention and are not intended to limit the present invention.
[0032] It should be noted that, in the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Here, A and B can be singular or plural, respectively.
[0033] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" or "attached to" another component, it can be directly connected to or indirectly connected to that other component. When a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component.
[0034] It should be noted that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.
[0036] It should be noted that the term "multiple" means two or more, unless otherwise explicitly specified.
[0037] Please refer to the following: Figures 1 to 6 The electrode peel strength testing device provided by this utility model is now described. The electrode peel strength testing device includes: a frame 1, a plate to be bonded 21, a first clamp 4, and a lifting driver 3; the plate to be bonded 21 is disposed on the frame 1; one end of the plate to be bonded 211 has a bonding surface 211; the bonding surface 211 is used to bond the outer surface of one end of the U-shaped electrode 7 to be tested; the first clamp 4 is used to clamp the other end of the U-shaped electrode 7 to be tested; the lifting driver 3 is used to drive the first clamp 4 to move vertically; the lifting driver 3 is disposed on the frame 1; the lifting direction of the first clamp 4 is parallel to the bonding surface 211.
[0038] Thus, the frame 1 is provided with a bonding plate 21, which has a bonding surface 211. The outer surface of one end of the U-shaped electrode 7 to be tested can be pasted onto the bonding surface 211, and the first clamp 4 can clamp the other end of the U-shaped electrode 7 to be tested. The frame 1 is provided with a lifting driver 3, which can drive the first clamp 4 to move up and down, and the moving direction of the first clamp 4 is parallel to the bonding surface 211. When the outer surface of one end of the U-shaped electrode 7 to be tested is pasted onto the bonding surface 211, and the other end of the U-shaped electrode 7 to be tested is clamped by the first clamp 4, during the up and down movement of the first clamp 4, the two ends of the U-shaped electrode 7 to be tested can be subjected to tearing forces in opposite directions, so that the user can test the bonding strength of the U-shaped electrode 7 to be pasted onto the bonding surface 211.
[0039] In one embodiment, the surface to be bonded 211 is vertically arranged.
[0040] In one embodiment, the vertical direction is perpendicular to the horizontal plane.
[0041] In one embodiment, the U-shaped electrode 7 being tested is: the electrode is bent into a U-shape.
[0042] Further, please refer to Figures 1 to 6As a specific embodiment of the electrode peel strength testing device provided by this utility model, the lifting driver 3 includes: a lifting platform 31 and a lifting mechanism 32; the lifting mechanism 32 is used to drive the lifting platform 31 to move up and down; the lifting mechanism 32 is disposed on the frame 1; the first clamp 4 is disposed on the lifting platform 31. Thus, the lifting platform 31 is provided with a first clamp 4 capable of clamping the other end of the U-shaped electrode 7 to be tested; the lifting mechanism 32 can drive the lifting platform 31 to move up and down, and the lifting platform 31 can drive the first clamp 4 to move up and down during the lifting and moving process.
[0043] Further, please refer to Figures 1 to 6 As a specific embodiment of the electrode peel strength testing device provided by this utility model, the first clamp 4 includes: a first base 44, a first clamping plate 41, a second clamping plate 42, and a first adjusting mechanism 43; the first base 44 is disposed on the lifting platform 31, the first clamping plate 41 is disposed on the first base 44, and the second clamping plate 42 is disposed parallel to and spaced apart from the first clamping plate 41; the first adjusting mechanism 43 is used to adjust the distance between the first clamping plate 41 and the second clamping plate 42; a slit is formed between the first clamping plate 41 and the second clamping plate 42 for clamping the U-shaped electrode 7 to be tested. Thus, the first base 44 is set on the lifting platform 31, and the first base 44 can be raised and lowered with the lifting platform 31; the first clamping plate 41 is set on the first base 44, and the first adjusting mechanism 43 can adjust the distance between the second clamping plate 42 and the first clamping plate 41, so that the first clamping plate 41 and the second clamping plate 42 can clamp the U-shaped electrode 7 to be tested when they are close to each other, and can release the U-shaped electrode 7 to be tested when they are far apart from each other.
[0044] Further, please refer to Figures 1 to 6 As a specific embodiment of the electrode peel strength testing device provided by this utility model, the first adjusting mechanism 43 includes: a first threaded hole 431 and a first screw 432; the first threaded hole 431 is formed on the second clamping plate 42, and the first screw 432 is rotatably mounted on the first base 44 around its own axis; the first screw 432 is threadedly connected to the first threaded hole 431. Thus, when the user turns the first screw 432, the first screw 432 can drive the second clamping plate 42 to move along the screw; during the movement of the second clamping plate 42 along the screw, it can move closer to or further away from the first clamping plate 41.
[0045] Further, please refer to Figures 1 to 6As a specific embodiment of the electrode peel strength testing device provided by this utility model, the first clamping plate 41 and the second clamping plate 42 are both stainless steel plates. Thus, the stainless steel plate has excellent corrosion resistance, resisting the erosion of moisture in the air, experimental solvents, or cleaning solutions in long-term experimental environments, preventing surface rust or oxidation spots, and ensuring a smooth and clean clamping surface. In addition, stainless steel itself has high hardness and elastic modulus, making it less prone to plastic deformation or elastic rebound during clamping under force, ensuring that the preset clamping gap accuracy is maintained even after multiple cycles of use.
[0046] Further, please refer to Figures 1 to 6 As a specific embodiment of the electrode peel strength testing device provided by this utility model, it further includes: a tensile sensor 8; the tensile sensor 8 is located between the first base 44 and the lifting platform 31, and the tensile sensor 8 is connected to both the first base 44 and the lifting platform 31. Thus, the tensile sensor 8 can measure the tensile force between the first base 44 and the lifting platform 31, and the user can obtain the tensile force on the tested U-shaped electrode 7 based on the change in the tensile force value of the tensile sensor 8.
[0047] Further, please refer to Figures 1 to 6 In one specific embodiment of the electrode peel strength testing device provided by this utility model, the plate to be bonded 21 is a flat plate; the bonding surface 211 is one side of the plate to be bonded 21. Thus, the U-shaped electrode 7 being tested is bonded more smoothly to the side surface of the flat plate, allowing for more accurate measurement of the tensile force of the U-shaped electrode 7.
[0048] Further, please refer to Figures 1 to 6 As a specific embodiment of the electrode peel strength testing device provided by this utility model, it further includes: a second clamp 5; the second clamp 5 is disposed on the frame 1 and used to clamp the plate to be glued 21. In this way, the second clamp 5 can clamp the plate to be glued 21 to maintain the stability of the position of the plate to be glued 21.
[0049] Further, please refer to Figures 1 to 6As a specific embodiment of the electrode peel strength testing device provided by this utility model, the second clamp 5 includes: a second base 533, a first clamping member 51, a second clamping member 52, and a second adjusting mechanism 53; the second base 533 is disposed on the frame 1, the first clamping member 51 is disposed on the second base 533, and the first clamping member 51 and the second clamping member 52 are spaced apart; the second adjusting mechanism 53 is used to adjust the distance between the first clamping member 51 and the second clamping member 52; the second adjusting mechanism 53 includes: a second threaded hole 531 and a second screw 532; the second threaded hole 531 is formed on the second clamping member 52; the second screw 532 is rotatably disposed on the second base 533; the second screw 532 passes through the second threaded hole 531, and the second screw 532 is threadedly connected to the second threaded hole 531. Thus, the user can adjust the distance between the first clamping member 51 and the second clamping member 52 by turning the second screw 532. When the first clamping member 51 and the second clamping member 52 are close to each other, they can clamp the plate to be glued 21. When the first clamping member 51 and the second clamping member 52 are far apart from each other, they can release the plate to be glued 21.
[0050] Further, please refer to Figures 1 to 6 As a specific embodiment of the electrode peel strength testing device provided by this utility model, the lifting mechanism 32 includes: a slide rail 321, a third screw 322, and a motor 323; the slide rail 321 is disposed on the frame 1 and extends in the vertical direction; the third screw 322 is rotatably disposed on the frame 1 and extends in the vertical direction; the motor 323 is used to drive the third screw 322 to rotate; the motor 323 is disposed on the frame 1; the lifting platform 31 is slidably disposed on the slide rail 321; the lifting platform 31 has a third threaded hole 311; the third screw 322 passes through the third threaded hole 311, and the third screw 322 is threadedly connected to the third threaded hole 311. Thus, the motor 323 can drive the third screw 322 to rotate. The third screw 322 is vertically arranged, and the lifting platform 31 is slidably mounted on the vertically arranged slide rail 321. Since the third screw 322 is threadedly connected to the third threaded hole 311 on the lifting platform 31, when the third screw 322 rotates, it can drive the lifting platform 31 to move up and down in the vertical direction along the slide rail 321.
[0051] Further, please refer to Figures 1 to 6 As a specific embodiment of the electrode peel strength testing device provided by this utility model, it further includes: a dust cover 6; the dust cover 6 is installed on the third screw 322. Thus, the dust cover 6 can reduce the impact of dust on the third screw 322.
[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. An electrode peel strength testing device, characterized in that, include: Frame (1); The plate to be bonded (21) is set on the frame (1); one end of the plate to be bonded (211) has a bonding surface (211); the bonding surface (211) is used to bond the outer surface of one end of the U-shaped electrode sheet (7) to be tested; The first clamp (4) is used to clamp the other end of the U-shaped electrode (7) to be tested; A lifting driver (3) is used to drive the first clamp (4) to move up and down in the vertical direction; the lifting driver (3) is disposed on the frame (1); the lifting and moving direction of the first clamp (4) is parallel to the plane to be glued (211).
2. The electrode peel strength testing device as described in claim 1, characterized in that, The lifting drive (3) includes: Lifting platform (31); A lifting mechanism (32) is used to drive the lifting platform (31) to move up and down; the lifting mechanism (32) is mounted on the frame (1); the first clamp (4) is mounted on the lifting platform (31).
3. The electrode peel strength testing device as described in claim 2, characterized in that, The first clamp (4) includes: a first base (44), a first clamping plate (41), a second clamping plate (42), and a first adjusting mechanism (43); the first base (44) is disposed on the lifting platform (31), the first clamping plate (41) is disposed on the first base (44), and the second clamping plate (42) is disposed parallel to and spaced apart from the first clamping plate (41); the first adjusting mechanism (43) is used to adjust the distance between the first clamping plate (41) and the second clamping plate (42); a slit is formed between the first clamping plate (41) and the second clamping plate (42) for clamping the U-shaped electrode sheet (7) to be tested.
4. The electrode peel strength testing device as described in claim 3, characterized in that, The first adjusting mechanism (43) includes: a first threaded hole (431) and a first screw (432); the first threaded hole (431) is opened on the second clamping plate (42), and the first screw (432) is rotatably disposed on the first base (44) around its own axis; the first screw (432) is threadedly connected to the first threaded hole (431).
5. The electrode peel strength testing device as described in claim 3, characterized in that, The first clamping plate (41) and the second clamping plate (42) are respectively stainless steel plates.
6. The electrode peel strength testing device as described in claim 3, characterized in that, Also includes: Tension sensor (8); The tension sensor (8) is located between the first base (44) and the lifting platform (31), and the tension sensor (8) is connected to the first base (44) and the lifting platform (31) respectively.
7. The electrode peel strength testing apparatus according to any one of claims 1 to 6, characterized in that, The board to be glued (21) is a flat plate; the surface to be glued (211) is one side of the board to be glued (21).
8. The electrode peel strength testing apparatus according to any one of claims 1 to 6, characterized in that, Also includes: Second clamp (5); The second clamp (5) is disposed on the frame (1) and used to clamp the plate to be glued (21).
9. The electrode peel strength testing device as described in claim 8, characterized in that, The second clamp (5) includes: a second base (533), a first clamping member (51), a second clamping member (52), and a second adjusting mechanism (53); the second base (533) is disposed on the frame (1), the first clamping member (51) is disposed on the second base (533), and the first clamping member (51) and the second clamping member (52) are spaced apart; the second adjusting mechanism (53) is used to adjust the distance between the first clamping member (51) and the second clamping member (52); The second adjusting mechanism (53) includes: a second threaded hole (531) and a second screw (532); the second threaded hole (531) is opened on the second clamping member (52); the second screw (532) is rotatably disposed on the second base (533); the second screw (532) passes through the second threaded hole (531) and is threadedly connected to the second threaded hole (531).
10. The electrode peel strength testing apparatus according to any one of claims 2 to 6, characterized in that, The lifting mechanism (32) includes: a slide rail (321), a third screw (322), and a motor (323); the slide rail (321) is mounted on the frame (1) and extends in the vertical direction; the third screw (322) is rotatably mounted on the frame (1) and extends in the vertical direction; the motor (323) is used to drive the third screw (322) to rotate; the motor (323) is mounted on the frame (1); the lifting platform (31) is slidably mounted on the slide rail (321); the lifting platform (31) has a third threaded hole (311); the third screw (322) passes through the third threaded hole (311) and is threadedly connected to the third threaded hole (311).
11. The electrode peel strength testing device as described in claim 10, characterized in that, Also includes: Dust cover (6); the dust cover (6) is mounted on the third screw (322).