Pole piece cutting and collecting device

Abstract

The utility model relates to a pole piece cutting and collecting device which comprises a supply roller, a cutting part, a collecting roller and a moving roller, pole pieces are wound on the supply roller, the supply roller can rotate in the first direction to supply the pole pieces, and the first direction is parallel to the axis direction of the supply roller; the cutting part can cut the pole piece; the collecting roller can rotate around a first direction so as to collect the pole pieces which are not coated with the active substances, and the axis direction of the collecting roller is parallel to the first direction; the axis direction of the moving roller is parallel to the first direction, and the moving roller can adsorb the pole piece so as to guide the pole piece which is not coated with the active substance to the collecting roller. The pole piece cutting and collecting device has the advantages of being high in empty foil cutting speed and high in efficiency, and manpower is liberated.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and in particular to an electrode cutting and collection device. Background Technology

[0002] In the production process of lithium-ion batteries, coating involves uniformly applying a prepared slurry containing active materials onto the electrode sheet, which is then wound into rolls for subsequent use.

[0003] Some electrodes in the electrode roll are not coated with active material, i.e., there are empty foils. These empty foils need to be manually cut off during subsequent use, which takes a long time and is inefficient. Utility Model Content

[0004] This application provides an electrode cutting and collection device to solve the problems of long time and low efficiency required to cut empty foil.

[0005] This application provides an electrode cutting and collecting device, comprising: a supply roller, a cutting section, a collecting roller, and a moving roller. The supply roller is wound with an electrode and is rotatable about a first direction to supply the electrode, the first direction being parallel to the axial direction of the supply roller. The cutting section is capable of cutting the electrode. The collecting roller is rotatable about the first direction to collect the electrode without active material coating, the axial direction of the collecting roller being parallel to the first direction. The moving roller is rotatable about the first direction and is capable of adsorbing the electrode to guide the electrode without active material coating to the collecting roller.

[0006] In one possible design, the moving roller is provided with adsorption holes, and the adsorption holes are under negative pressure, so that the electrode can be adsorbed by the adsorption holes.

[0007] In one possible design, the electrode cutting and collecting device includes a body having a base and two first support arms, the two first support arms being spaced apart from the base, and the two ends of the collecting roller and the moving roller being supported by the two first support arms along the first direction.

[0008] In one possible design, the electrode cutting and collecting device further includes a first driving unit, which is capable of driving the moving roller to move toward the collecting roller or toward the supply roller; the first driving unit is disposed on the first support arm.

[0009] In one possible design, the first drive unit includes: a first drive motor, a first lead screw, and a first slider. The first drive motor is capable of driving the first lead screw to rotate, the first slider is threadedly connected to the first lead screw, and the first slider is connected to the end of the movable roller.

[0010] In one possible design, the first support arm is provided with a receiving groove, and the first lead screw and the first slider are mounted in the receiving groove.

[0011] In one possible design, the electrode cutting and collecting device further includes a guide roller, the axis of which is parallel to the first direction, and the guide roller is capable of supporting the electrode coated with active material.

[0012] In one possible design, the first support arm includes: a first mounting part, a second mounting part, and a connecting part, wherein the first mounting part and the second mounting part are respectively located at both ends of the connecting part, and the first mounting part is connected to the base;

[0013] The two ends of the collecting roller are supported on the first mounting part along the first direction, the two ends of the passing roller are supported on the second mounting part along the first direction, and the receiving groove is connected to the connecting part.

[0014] In one possible design, the body includes two second support arms, which are spaced apart from each other on the base, and the two ends of the supply roller are supported on the two second support arms along a first direction.

[0015] In one possible design, the electrode cutting and collecting device includes a second drive unit, which includes a second drive motor, a second lead screw, a third lead screw, and a coupling. The coupling is connected between the second lead screw and the third lead screw. The second drive motor can drive the second lead screw to rotate. When the second lead screw rotates, the coupling can drive the third lead screw to rotate. The rotation direction of the second lead screw and the rotation direction of the third lead screw are opposite. One of the two second support arms is threadedly connected to the second lead screw, and the other is threadedly connected to the third lead screw.

[0016] In this application, during the process of supplying the electrode sheet by rotating the supply roller, once an empty foil appears on the electrode sheet, the cutting part cuts the electrode sheet along the boundary line between the active material coated and the uncoated active material. Simultaneously, the moving roller approaches the empty foil along a second direction and adsorbs it. After the empty foil is adsorbed by the moving roller, the moving roller moves along the second direction towards the collecting roller, guiding the empty foil to the collecting roller. The collecting roller rotates to collect the empty foil, thus realizing the automatic cutting of the electrode sheet and collection of the empty foil by the electrode sheet cutting and collecting device. The electrode sheet cutting and collecting device has the advantages of fast empty foil removal speed and high efficiency, freeing up manpower, and the collected empty foil can be reused to reduce waste.

[0017] The detection unit can be a CCD camera, positioned above the electrode supply path. When the electrode cutting and collecting device supplies electrodes, the CCD camera takes a picture of the electrode and transmits the image to the control unit. Since electrodes coated with active material and those without active material have different colors, the control unit can determine whether an electrode is coated with active material based on its color. If the electrode is coated with active material, the electrode cutting and collecting device supplies electrodes normally; if the electrode is not coated with active material, the cutting unit cuts the electrode, and the control unit controls the collecting roller and moving roller to collect the empty foil. The control unit can be a computer.

[0018] The electrode cutting and collection device can automatically identify empty foil during the electrode supply process, and then automatically cut the electrode and collect the empty foil. Therefore, the electrode cutting and collection device has a high degree of automation.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0020] Figure 1 A schematic diagram of the electrode cutting and collection device provided in this application in a specific embodiment;

[0021] Figure 2 for Figure 1 A schematic diagram of the electrode cutting and collecting device with the roller removed;

[0022] Figure 3 for Figure 2 Schematic diagram of the moving roller in the middle;

[0023] Figure 4 for Figure 1 A schematic diagram of the electrode cutting and collecting device with the collecting roller, moving roller, passing roller and first cutting part removed;

[0024] Figure 5 for Figure 2 A magnified view of a portion of region I;

[0025] Figure 6 for Figure 4 A schematic diagram of the structure of the first support arm;

[0026] Figure 7 for Figure 4 Another structural schematic diagram of the electrode cutting and collection device in the middle;

[0027] Figure 8 for Figure 1 A schematic diagram of the structure of the first cut-off section.

[0028] Figure label:

[0029] 1-The body;

[0030] 11-Base;

[0031] 12-First support arm;

[0032] 121-First Installation Section;

[0033] 122-Second Installation Section;

[0034] 123 - Connecting part;

[0035] 13-Receiving groove;

[0036] 14-Second support arm;

[0037] 15-Third drive unit;

[0038] 16-Fourth Drive Unit;

[0039] 2-Supply roller;

[0040] 3-Collection roller;

[0041] 4-Moving roller;

[0042] 5-First cutting section;

[0043] 51 - Cutting knife;

[0044] 52-Fifth Drive Unit;

[0045] 6-First drive unit;

[0046] 61 - First drive motor;

[0047] 62 - First leadscrew;

[0048] 63 - First slider;

[0049] 7-Second drive unit;

[0050] 71 - Second drive motor;

[0051] 72 - Second leadscrew;

[0052] 73 - Third leadscrew;

[0053] 74 - Coupling;

[0054] 8-Passing roller.

[0055] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0056] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0057] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0058] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0059] It should be understood that the term "and / or" used in this article 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. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0060] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0061] This application provides an electrode cutting and collection device, such as... Figure 1 and Figure 2As shown, the electrode cutting and collecting device includes: a supply roller 2, a cutting section, a collecting roller 3, and a moving roller 4. The supply roller 2 is wound with an electrode and can rotate around a first direction X to supply the electrode. The first direction X is parallel to the axial direction of the supply roller 2. The cutting section can cut the electrode. The collecting roller 3 can rotate around the first direction X to collect the electrode without active material coating (i.e., empty foil). The axial direction of the collecting roller 3 is parallel to the first direction X. The axial direction of the moving roller 4 is parallel to the first direction X. The moving roller 4 can adsorb the electrode to guide the electrode without active material coating to the collecting roller 3.

[0062] During the process of supplying the electrode sheet by rotating the supply roller 2, once an empty foil appears on the electrode sheet, the cutting part cuts the electrode sheet along the boundary line between the active material coated on the electrode sheet and the uncoated active material. At the same time, the moving roller 4 approaches the empty foil along the second direction Y and adsorbs the empty foil. After the empty foil is adsorbed by the moving roller 4, the moving roller 4 moves along the second direction Y towards the direction of the collecting roller 3, guiding the empty foil to the collecting roller 3. The collecting roller 3 rotates to collect the empty foil, thereby realizing the automatic cutting of the electrode sheet and collection of the empty foil by the electrode sheet cutting and collecting device. The electrode sheet cutting and collecting device has the advantages of fast cutting speed and high efficiency, freeing up manpower, and the collected empty foil can be reused to reduce waste.

[0063] The movable roller 4 can move along the second direction Y, which is the direction from the supply roller 2 to the collection roller 3, that is, the movable roller 4 can move to get closer to the supply roller 2 or the collection roller 3.

[0064] The electrode cutting and collection device also includes a detection unit and a control unit. The detection unit can detect whether active substances are coated on the electrode, and the control unit can control the collection roller 3 and the moving roller 4 according to the detection results of the detection unit.

[0065] The detection unit can be a CCD camera, positioned above the electrode supply path. When the electrode cutting and collecting device supplies electrodes, the CCD camera takes a picture of the electrode and transmits the image to the control unit. Since electrodes coated with active material and those without active material have different colors, the control unit can determine whether an electrode is coated with active material based on its color. If the electrode is coated with active material, the electrode cutting and collecting device supplies electrodes normally; if the electrode is not coated with active material, the cutting unit cuts the electrode, and the control unit controls the collecting roller 3 and the moving roller 4 to collect the empty foil. The control unit can be a computer.

[0066] Preferably, the cutting section includes a first cutting section 5 and a second cutting section. The first cutting section 5 is movable along a third direction Z to cut the electrode sheet after empty foil collection is completed. The second cutting section is capable of cutting the electrode sheet when empty foil appears during the electrode sheet supply process. The third direction Z is perpendicular to the first direction X and the second direction Y. Furthermore, the first cutting section 5 and the second cutting section cut the electrode sheet under the control of a control unit. It is understood that cutting the electrode sheet can also be done manually.

[0067] In this embodiment, the electrode cutting and collection device can automatically identify empty foil during the electrode supply process, and then automatically cut the electrode and collect the empty foil. Therefore, the electrode cutting and collection device has the advantage of a high degree of automation.

[0068] Specifically, such as Figure 3 As shown, the moving roller 4 is provided with an adsorption hole 41. The adsorption hole 41 is under negative pressure. When the electrode is close to the adsorption hole 41, the electrode is pressed into the adsorption hole under the action of atmospheric pressure, that is, the electrode is adsorbed by the adsorption hole 41.

[0069] Optionally, multiple rows of adsorption holes 41 are spaced apart along the circumference of the moving roller 4. Each row of adsorption holes 41 includes multiple adsorption holes 41 spaced apart along the axial direction of the moving roller 4, so that the adsorption effect of the moving roller 4 on the electrode is stronger, and the electrode can move with the moving roller 4 when the moving roller 4 moves along the second direction Y. It is understood that the multiple adsorption holes 41 on the moving roller 4 can also be arranged in other forms, as long as the electrode can be reliably adsorbed.

[0070] More specifically, such as Figure 1 As shown, the electrode cutting and collecting device also includes a roller 8, the axis of which is parallel to the first direction X. The roller 8 can support the electrode coated with active material, provide tension to the electrode and adjust the transmission direction of the electrode, thereby facilitating the receiving device to receive the electrode.

[0071] In one specific implementation, such as Figure 2 and Figure 4 As shown, the electrode cutting and collecting device includes a body 1, which has a base 11 and two first support arms 12. The two first support arms 12 are spaced apart on the base 11, and the two ends of the collecting roller 3 and the moving roller 4 are supported on the two first support arms 12 along the first direction X.

[0072] Two first support arms 12 are mounted on one side of the base 11 along the third direction Z, providing stable support for the collecting roller 3 and the moving roller 4, ensuring their stability during the supply of electrode sheets or the collection of empty foil. Furthermore, the two ends of the roller 8 along the first direction X are also supported by the two first support arms 12.

[0073] Specifically, such as Figure 4As shown, the electrode cutting and collecting device also includes a first driving part 6 disposed on the first support arm 12. The first driving part 6 can drive the moving roller 4 to move along the second direction Y, so that the moving roller 4 can approach the supply roller 2 or the collecting roller 3 along the second direction Y.

[0074] Optionally, a first drive unit 6 is provided on each of the two first support arms 12, meaning that both sides of the moving roller 4 can be driven. Optionally, one of the first support arms 12 is provided with a first drive unit 6, and the other first support arm 12 is provided with a matching guide rail.

[0075] More specifically, such as Figure 5 As shown, the first drive unit 6 includes: a first drive motor 61, a first lead screw 62 and a first slider 63. The first drive motor 61 can drive the first lead screw 62 to rotate. The first slider 63 is threadedly connected to the first lead screw 62. The first slider 63 is connected to the end of the moving roller 4 along the first direction X.

[0076] Since the first slider 63 is threadedly connected to the first lead screw 62, and the first lead screw 62 extends along the second direction Y, when the first lead screw 62 rotates, the first slider 63 moves along the first lead screw 62, thereby driving the moving roller 4 to move along the second direction Y.

[0077] Furthermore, such as Figure 4 and Figure 5 As shown, the first support arm 12 is provided with a receiving groove 13 extending along the second direction Y, and the first lead screw 62 and the first slider 63 are mounted in the receiving groove 13. The receiving groove 13 can protect the first lead screw 62 and the first slider 63, prevent other structures of the electrode cutting and collecting device from damaging their linkage, and the receiving groove can limit the movement range of the first slider 63, guiding the movement of the first slider 63.

[0078] Preferred, such as Figure 6 As shown, the first support arm 12 includes a first mounting portion 121, a second mounting portion 122, and a connecting portion 123. The connecting portion 123 extends along the second direction Y. The first mounting portion 121 and the second mounting portion 122 are respectively located at the two ends of the connecting portion 123 along the second direction Y. The first mounting portion 121 extends along the third direction Y towards the base 11 and is connected to the base 11. The second mounting portion 122 extends along the third direction Y away from the base 11.

[0079] The two ends of the collecting roller 3 are supported on the first mounting part 121 along the first direction X, and the two ends of the passing roller 8 are supported on the second mounting part 122 along the first direction X. The receiving groove 13 is fixedly connected to the connecting part 123, so that when viewed along the second direction Y, the collecting roller 3 and the moving roller 4 are located between the supply roller 2 and the passing roller 8.

[0080] Furthermore, such as Figure 4 and Figure 7 As shown, the machine body 1 includes two second support arms 14, which are spaced apart on the base 11. The two ends of the supply roller 2 are supported on the two second support arms 14 along the first direction X.

[0081] Two second support arms 14 are mounted on one side of the base 11 along the second direction Y, which can provide stable support for the supply roller 2, so that the supply roller 2 remains stable during the process of supplying electrode sheets or collecting empty foil.

[0082] Since the first support arm 12 and the second support arm 14 are respectively installed on different surfaces of the base 11, the structure of the electrode cutting and collecting device is relatively compact and the overall volume is small.

[0083] Specifically, such as Figure 7 As shown, the electrode cutting and collecting device includes a second drive unit 7, which includes a second drive motor 71, a second lead screw 72, a third lead screw 73, and a coupling 74. The coupling 74 is connected between the second lead screw 72 and the third lead screw 73. The second drive motor 71 can drive the second lead screw 72 to rotate. When the second lead screw 72 rotates, the coupling 74 can drive the third lead screw 73 to rotate. The rotation direction of the second lead screw 72 and the rotation direction of the third lead screw 73 are opposite. One of the two second support arms 14 is threadedly connected to the second lead screw 72, and the other is threadedly connected to the third lead screw 73.

[0084] The second lead screw 72 and the third lead screw 73 extend along the first direction X. Therefore, when the second lead screw 72 and the third lead screw 73 rotate in opposite directions, the two second support arms 14 can move closer to each other or further away from each other along the first direction X, so as to facilitate the installation or removal of the supply roller 2.

[0085] In the above embodiments, such as Figure 1 As shown, the body 1 also includes a third drive unit 15 and a fourth drive unit 16. The third drive unit 15 is connected to one end of the supply roller 2 along the first direction X to drive the supply roller 2 to rotate; the fourth drive unit 16 is connected to one end of the collection roller 3 along the first direction X to drive the mobile phone roller 3 to rotate. The third drive unit 15 and the fourth drive unit 16 can be servo motors.

[0086] In addition, such as Figure 8 As shown, the first cutting section 5 includes a cutting blade 51 and a fifth driving section 52. The cutting blade 51 can cut the electrode sheet when it contacts the electrode sheet. The fifth driving section 52 is disposed at at least one end of the cutting blade 51 along the first direction X to drive the cutting blade 51 to move along the third direction Z. The fifth driving section 52 can be a servo motor.

[0087] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrode cutting and collecting device, characterized in that, The electrode cutting and collection device includes: A supply roller (2) on which an electrode sheet is wound, the supply roller (2) being rotatable about a first direction (X) to supply the electrode sheet, the first direction (X) being parallel to the axial direction of the supply roller (2); A cutting section capable of cutting the electrode sheet; A collecting roller (3) is rotatable about the first direction (X) to collect the electrode sheet that is not coated with active material. The axial direction of the collecting roller (3) is parallel to the first direction (X). The moving roller (4) has its axis parallel to the first direction (X) and is capable of adsorbing the electrode to guide the electrode without active material to the collecting roller (3).

2. The electrode cutting and collecting device according to claim 1, characterized in that, The moving roller (4) is provided with an adsorption hole (41), and the adsorption hole (41) is under negative pressure, so that the electrode can be adsorbed by the adsorption hole (41).

3. The electrode cutting and collecting device according to claim 1, characterized in that, The electrode cutting and collecting device includes a body (1), which has a base (11) and two first support arms (12). The two first support arms (12) are spaced apart on the base (11), and the two ends of the collecting roller (3) and the moving roller (4) are supported on the two first support arms (12) along the first direction (X).

4. The electrode cutting and collecting device according to claim 3, characterized in that, The electrode cutting and collecting device further includes a first driving unit (6), which can drive the moving roller (4) to move toward the collecting roller (3) or toward the supply roller (2); The first drive unit (6) is disposed on the first support arm (12).

5. The electrode cutting and collecting device according to claim 4, characterized in that, The first drive unit (6) includes: a first drive motor (61), a first lead screw (62) and a first slider (63). The first drive motor (61) can drive the first lead screw (62) to rotate. The first slider (63) is threadedly connected to the first lead screw (62) and is connected to the end of the moving roller (4).

6. The electrode cutting and collecting device according to claim 5, characterized in that, The first support arm (12) is provided with a receiving groove (13), and the first lead screw (62) and the first slider (63) are installed in the receiving groove (13).

7. The electrode cutting and collecting device according to claim 6, characterized in that, The electrode cutting and collecting device further includes a roller (8), the axis of which is parallel to the first direction (X), and the roller (8) can support the electrode coated with active material.

8. The electrode cutting and collecting device according to claim 7, characterized in that, The first support arm (12) includes: a first mounting part (121), a second mounting part (122) and a connecting part (123). The first mounting part (121) and the second mounting part (122) are respectively located at both ends of the connecting part (123). The first mounting part (121) is connected to the base (11). The two ends of the collecting roller (3) are supported on the first mounting part (121) along the first direction (X), the two ends of the passing roller (8) along the first direction (X) are supported on the second mounting part (122), and the receiving groove (13) is connected to the connecting part (123).

9. The electrode cutting and collecting device according to any one of claims 3-8, characterized in that, The body (1) includes two second support arms (14), which are spaced apart on the base (11). The two ends of the supply roller (2) are supported on the two second support arms (14) along the first direction (X).

10. The electrode cutting and collecting device according to claim 9, characterized in that, The electrode cutting and collecting device includes a second drive unit (7), which includes a second drive motor (71), a second lead screw (72), a third lead screw (73), and a coupling (74). The coupling (74) is connected between the second lead screw (72) and the third lead screw (73). The second drive motor (71) can drive the second lead screw (72) to rotate. When the second lead screw (72) rotates, the coupling (74) can drive the third lead screw (73) to rotate. The rotation direction of the second lead screw (72) is opposite to that of the third lead screw (73). One of the two second support arms (14) is threaded to the second lead screw (72), and the other is threaded to the third lead screw (73).

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