Pole piece stripping force sample preparation tool

Abstract

The utility model belongs to the technical field of battery pole piece production, and particularly relates to a pole piece stripping force sample preparation tool which comprises a base frame, the sample table is mounted on the base frame and is used for placing a pole piece sample to be tested; the rolling assembly comprises a moving seat and a rolling part, the moving seat can be movably installed on the base frame in the X direction, and the rolling part is installed on the moving seat and used for rolling a pole piece sample; the transmission assembly is mounted on the base frame and used for driving the moving seat to move in the X direction; the lifting assembly is mounted on the moving seat and used for driving the rolling part to move in the Z direction; the pressure sensing piece is mounted in the sample table; the device has the beneficial effects that the pressure sensing piece senses and detects the change of positive pressure, and feeds back the change to the lifting component to control the lifting of the rolling piece, so that the same positive pressure acting on a pole piece sample is ensured, and the consistency of sample preparation is realized; the transmission assembly controls the rolling piece to move linearly at a constant speed, so that the acting time of positive pressure on the pole piece sample is the same, and the stripping force test consistency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery pole piece production, and in particular relates to a pole piece peeling force sample making tool. Background Art

[0002] In the battery electrode production process, the pole piece peeling force is an important indicator for evaluating the bonding strength between the active material and the current collector. When testing the pole piece peeling force, a test sample needs to be made. The test sample is usually made by pasting the battery pole piece sample to be tested and the tape together, and then pressing the pole piece onto the tape by using a handheld pressing wheel.

[0003] However, due to the artificial differences in sample preparation techniques, the pressing force acting on the tape and the electrode fluctuates, which in turn leads to large fluctuations in the peel force test results. Utility Model Content

[0004] The purpose of the utility model is to provide a pole piece peeling force sample preparation tool for solving the above-mentioned technical problems.

[0005] In view of this, the utility model provides a pole piece peeling force sample preparation tool, comprising:

[0006] Scaffolding;

[0007] A sample stage, which is installed on the base frame and is used to place the electrode sample to be tested;

[0008] A rolling assembly, the rolling assembly comprises a movable seat and a rolling piece, the movable seat can be movably mounted on the base frame along the X direction, and the rolling piece can be movably mounted on the movable seat along the Z direction for rolling the electrode sample;

[0009] The transmission assembly is installed on the base frame and is used to drive the moving seat to move along the X direction;

[0010] A lifting assembly is installed on the moving seat and is used to drive the roller pressing part to move along the Z direction;

[0011] The pressure sensing component is installed in the sample stage and is used to sense the pressure applied by the roller pressing component to the pole piece and feed it back to the lifting component.

[0012] Furthermore, the transmission assembly includes:

[0013] A first driving module, the first driving module is installed on the base frame;

[0014] A first guide member, the first guide member is installed on the base frame;

[0015] The movable seat is installed on the first guide member so as to be movable along the X direction, and the first driving module is used for driving the movable seat to move along the X direction.

[0016] Furthermore, the first driving module includes:

[0017] A first screw rod is rotatably mounted on the base frame and is threadedly connected to the movable seat;

[0018] The first motor is installed on the base frame and is used to control the rotation of the first screw rod.

[0019] Furthermore, the lifting assembly includes:

[0020] A second driving module, the second driving module is installed on the moving base;

[0021] A second guide member, the second guide member is installed on the moving seat;

[0022] The rolling member is installed on the second guide member so as to be movable along the Z direction, and the second driving module is used for driving the rolling member to move along the Z direction.

[0023] Further, the rolled part comprises:

[0024] A fixed seat, the fixed seat can be movably mounted on the second guide member along the Z direction;

[0025] The roller is rotatably mounted on the fixed seat.

[0026] Furthermore, the second driving module includes:

[0027] A second screw rod is rotatably mounted on the movable seat and is threadedly connected to the fixed seat;

[0028] The second motor is installed on the moving seat and is used to control the rotation of the second screw rod.

[0029] Furthermore, it also includes:

[0030] The photoelectric protection component is installed on the base frame and is located on both sides of the moving seat in the X direction.

[0031] Furthermore, the photoelectric protection element is a safety grating.

[0032] Furthermore, the pressure sensing element is piezoelectric ceramic.

[0033] The beneficial effects of the utility model are:

[0034] In the process of preparing the electrode peeling force sample, the pressure sensing component is used to sense and detect the change of positive pressure, and the pressure change is fed back to the lifting component to control the lifting and lowering of the roller, thereby ensuring that the positive pressure acting on the electrode sample is the same during sample preparation and achieving consistency in sample preparation; at the same time, the transmission component is used to control the roller to maintain uniform linear motion, so that the positive pressure on the electrode sample acts on the same time during sample preparation, thereby improving the consistency of the peeling force test. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the utility model;

[0036] The symbols in the figure are:

[0037] 1. Base frame; 2. Sample stage; 3. Moving seat; 4. First guide member; 5. First screw rod; 6. First motor; 7. Second guide member; 8. Fixed seat; 9. Roller; 10. Second screw rod; 11. Second motor; 12. Photoelectric protection member. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] Embodiment 1:

[0041] This embodiment provides a pole piece peeling force sample preparation tool, including:

[0042] Base frame 1;

[0043] Sample stage 2, which is installed on the base frame 1 and is used to place the electrode sample to be tested;

[0044] A rolling assembly, the rolling assembly comprises a movable seat 3 and a rolling piece, the movable seat 3 can be movably mounted on the base frame 1 along the X direction, and the rolling piece can be movably mounted on the movable seat 3 along the Z direction for rolling the electrode sample;

[0045] A transmission assembly is installed on the base frame 1 and is used to drive the moving seat 3 to move along the X direction;

[0046] A lifting assembly is installed on the moving seat 3 and is used to drive the roller pressing part to move along the Z direction;

[0047] The pressure sensing component is installed in the sample stage 2 and is used to sense the pressure applied by the roller pressing component to the pole piece and feed it back to the lifting component.

[0048] In this technical solution, a pressure sensing component is provided on the sample table 2, on which a tape and a pole piece sample to be tested are placed, the pole piece sample and the tape are bonded, and the moving seat 3 is controlled to move along the X direction by a transmission component, and the transmission component can be a screw transmission module, or a cylinder, a hydraulic cylinder, or other devices capable of driving the moving seat 3 to move linearly. The roller is installed on the moving seat 3 and rolls along the X direction with the moving seat 3. The roller acts on the pole piece sample to apply pressure to the pole piece sample, so that the pole piece sample can be compacted onto the 3M tape, and the peeling force test sample is completed.

[0049] In the process of the transmission component controlling the movable seat 3 to move along the X direction, when the force exerted by the rolling part on the electrode sample changes, the pressure sensing component will detect the change in positive pressure, and then transmit the pressure change to the lifting component in the form of an electrical signal. The lifting component can be a screw transmission module or an electric cylinder. The lifting component controls the rolling part to move up and down along the Z direction according to the electrical signal, so that the positive pressure exerted by the rolling part on each position of the electrode sample can be kept constant, thereby achieving consistency in sample preparation.

[0050] In addition, the transmission assembly controls the movable seat 3 to perform uniform linear motion along the X direction at a set speed. Through this structural design, the positive pressure on the electrode sample during sample preparation has the same action time, thereby improving the consistency of the peeling force test.

[0051] In summary, by using the electrode peeling force sample preparation tool, during the electrode peeling force sample preparation process, the pressure sensing component is used to sense and detect the change in positive pressure, and the pressure change is fed back to the lifting component to control the lifting and lowering of the roller component, thereby ensuring that the positive pressure acting on the electrode sample during sample preparation is the same, thereby achieving consistency in sample preparation; at the same time, the transmission component is used to control the roller component to maintain uniform linear motion, so that the positive pressure on the electrode sample during sample preparation is the same, thereby improving the consistency of the peeling force test.

[0052] Embodiment 2:

[0053] This embodiment provides a pole piece peeling force sample preparation tool, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0054] Furthermore, the transmission assembly includes:

[0055] A first driving module, the first driving module is installed on the base frame 1;

[0056] A first guide member 4, the first guide member 4 is installed on the base frame 1;

[0057] The movable seat 3 is installed on the first guide member 4 so as to be movable along the X direction, and the first driving module is used for driving the movable seat 3 to move along the X direction.

[0058] In the present technical solution, the first driving module may be a screw module, or may be a pneumatic cylinder or an electric cylinder in cooperation with a push rod to realize the movement of the moving seat 3 along the X direction on the first guide member 4. The first guide member 4 may be a guide rail or a guide rod, which plays a guiding and limiting role in the X-direction movement of the moving seat 3, ensuring that the moving seat 3 can maintain linear motion along the X direction.

[0059] Furthermore, the first driving module includes:

[0060] A first screw rod 5, which is rotatably mounted on the base frame 1 and is threadedly connected to the movable seat 3;

[0061] The first motor 6 is mounted on the base frame 1 and is used to control the rotation of the first screw rod 5 .

[0062] In the present technical solution, the first screw rod 5 passes through the movable seat 3 and is threadedly connected to the movable seat 3. The first motor 6 is a servo motor, which has the advantages of high-precision control, fast response and high stability. The first motor 6 controls the rotation of the first screw rod 5, and then uses the first guide member 4 to limit the movable seat 3, so that when the first screw rod 5 rotates, the movable seat 3 can move in a straight line at a uniform speed along the axial direction of the screw rod (i.e., the X direction), thereby driving the roller to move and compact the electrode sample onto the tape.

[0063] This structural design ensures that the movable seat 3 and the rolling member can maintain stable uniform linear motion along the X direction, so that the positive pressure acts on the electrode sample for the same time during sample preparation, thereby improving the consistency of the peeling force test.

[0064] Embodiment 3:

[0065] This embodiment provides a pole piece peeling force sample preparation tool, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0066] Furthermore, the lifting assembly includes:

[0067] A second driving module, which is installed on the moving base 3;

[0068] A second guide member 7, the second guide member 7 is installed on the moving seat 3;

[0069] The rolling element is installed on the second guide element 7 so as to be movable along the Z direction, and the second driving module is used for driving the rolling element to move along the Z direction.

[0070] In the present technical solution, the second driving module can be a screw module or an electric telescopic push rod to realize the lifting and lowering movement of the roller member along the Z direction on the second guide member 7. The second guide member 7 can be a guide rail or a guide rod, which plays a guiding and limiting role in the Z direction movement of the roller member, ensuring that the roller member can perform stable lifting and lowering movement along the Z direction.

[0071] Embodiment 4:

[0072] This embodiment provides a pole piece peeling force sample preparation tool, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0073] Further, the rolled part comprises:

[0074] A fixed seat 8, the fixed seat 8 is movably mounted on the second guide member 7 along the Z direction;

[0075] The roller 9 is rotatably mounted on the fixed seat 8.

[0076] Furthermore, the second driving module includes:

[0077] A second screw rod 10, which is rotatably mounted on the movable seat 3 and is threadedly connected to the fixed seat 8;

[0078] The second motor 11 is installed on the moving base 3 and is used to control the rotation of the second screw rod 10 .

[0079] In the present technical solution, as shown in the figure, the first motor 6 is used to drive the first screw 5 to rotate and control the movable seat 3 to move along the X direction, and drive the roller 9 to roll along the X direction to roll the pole piece sample onto the tape. The second motor 11 can be a servo motor. The second motor 11 is installed on the movable seat 3 and connected to one end of the second screw 10. The second guide member 7 is two guide rods, which are installed on the movable seat 3 and parallel to the second screw 10. The fixed seat 8 can be installed on the second guide member 7 movably along the Z direction and is threadedly connected to the second screw 10. The second motor 11 drives the second screw 10 to rotate and control the fixed seat 8 to move along the Z direction, thereby driving the roller 9 to move along the Z direction, thereby ensuring that the positive pressure of the roller 9 on each position of the pole piece sample can be kept constant.

[0080] Embodiment 5:

[0081] This embodiment provides a pole piece peeling force sample preparation tool, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0082] Furthermore, it also includes:

[0083] The photoelectric protection element 12 is installed on the base frame 1 and is located on both sides of the movable seat 3 in the X direction.

[0084] In this technical solution, the photoelectric protection element 12 can detect when a human body or object enters between the movable seat 3 and the base frame 1. Once it is detected that a human body or object enters between the movable seat 3 and the base frame 1, the working state of the tooling can be automatically stopped or adjusted to ensure the safety of the operator.

[0085] Furthermore, the photoelectric protection element 12 is a safety grating. When the safety grating is blocked, the pole piece peeling force sample preparation tool will stop running, thereby ensuring the safety of the operator and effectively improving the safety of use.

[0086] Embodiment 6:

[0087] This embodiment provides a pole piece peeling force sample preparation tool, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0088] Furthermore, the pressure sensing element is piezoelectric ceramic.

[0089] In this technical solution, when the force exerted by the roller 9 on the pole piece sample changes, the piezoelectric ceramic can generate a current change, and the changed current is transmitted to the second driving member of the lifting assembly in the form of an electrical signal. The second driving member controls the roller 9 to rise or fall according to the electrical signal, thereby ensuring that the positive pressure acting on the pole piece sample is the same, thereby achieving consistency in sample preparation.

[0090] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A pole piece peeling force sample preparation tool, characterized in that: include: Base frame (1); A sample table (2), the sample table (2) being mounted on the base frame (1) and used for placing a pole piece sample to be tested; A rolling assembly, the rolling assembly comprising a movable seat (3) and a rolling piece, the movable seat (3) being movably mounted on the base frame (1) along the X direction, and the rolling piece being movably mounted on the movable seat (3) along the Z direction for rolling the electrode sample; A transmission assembly, the transmission assembly being mounted on the base frame (1) and being used for driving the moving seat (3) to move along the X direction; A lifting assembly, the lifting assembly being mounted on the moving seat (3) and used for driving the roller pressing member to move along the Z direction; A pressure sensing component is installed in the sample platform (2) and is used to sense the pressure applied by the roller pressing component to the pole piece and feed it back to the lifting component.

2. The electrode peeling force sample preparation tool according to claim 1, characterized in that: The transmission assembly comprises: A first driving module, wherein the first driving module is mounted on a base frame (1); A first guide member (4), the first guide member (4) being mounted on the base frame (1); The movable seat (3) is mounted on the first guide member (4) so ​​as to be movable along the X direction, and the first driving module is used to drive the movable seat (3) to move along the X direction.

3. The electrode peeling force sample preparation tool according to claim 2, characterized in that: The first driving module comprises: A first screw rod (5), the first screw rod (5) is rotatably mounted on the base frame (1) and is threadedly connected to the movable seat (3); A first motor (6), the first motor (6) is mounted on the base frame (1) and is used to control the rotation of the first screw rod (5).

4. The electrode peeling force sample preparation tool according to claim 1, characterized in that: The lifting assembly comprises: A second driving module, wherein the second driving module is mounted on the moving base (3); A second guide member (7), wherein the second guide member (7) is mounted on the movable seat (3); The rolling element is installed on the second guide member (7) so as to be movable along the Z direction, and the second driving module is used for driving the rolling element to move along the Z direction.

5. The electrode peeling force sample preparation tool according to claim 4, characterized in that: The rolling element comprises: A fixed seat (8), wherein the fixed seat (8) is mounted on the second guide member (7) so as to be movable along the Z direction; A roller (9), wherein the roller (9) is rotatably mounted on a fixed seat (8).

6. The electrode peeling force sample preparation tool according to claim 5, characterized in that: The second driving module comprises: A second screw rod (10), the second screw rod (10) is rotatably mounted on the movable seat (3) and is threadedly connected to the fixed seat (8); A second motor (11), the second motor (11) is mounted on the moving seat (3) and is used to control the rotation of the second screw rod (10).

7. The electrode peeling force sample preparation tool according to claim 1, characterized in that: Also includes: A photoelectric protection element (12) is installed on the base frame (1) and is located on both sides of the movable seat (3) in the X direction.

8. The electrode peeling force sample preparation tool according to claim 7, characterized in that: The photoelectric protection element (12) is a safety grating.

9. The electrode peeling force sample preparation tool according to claim 1, characterized in that: The pressure sensing element is piezoelectric ceramic.

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