Cutting apparatus, cutting method, and battery manufacturing apparatus

Abstract

The application relates to a cutting device, a cutting method and a battery manufacturing equipment, and belongs to the technical field of battery manufacturing. The application provides a cutting device, which comprises a pair of cutters, a driving mechanism configured to drive the pair of cutters to close or open each other along a first direction, and a gap adjusting mechanism configured to drive at least one of the pair of cutters to move along a second direction to increase a movement gap between the pair of cutters before the driving mechanism drives the pair of cutters to open, wherein the first direction and the second direction intersect. The cutting device is provided with the gap adjusting mechanism, so that the wear degree of the cutting device can be reduced, and the service life of the cutting device is prolonged. The application also provides a cutting method and a battery manufacturing equipment comprising the cutting device.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and more specifically, to a cutting device, a cutting method, and battery manufacturing equipment. Background Technology

[0002] With the development of new energy vehicles, the technological level of the lithium battery industry is getting higher and higher, and the industrial manufacturing level of batteries is becoming more and more mature.

[0003] In the battery manufacturing process, a cutting device is needed to cut the electrode sheets, but the cutting blades of the cutting device have a very short lifespan. Summary of the Invention

[0004] Therefore, this application proposes a cutting device, a cutting method, and a battery manufacturing equipment, which can improve the service life of the cutting device.

[0005] A first aspect of this application provides a cutting device, comprising: a pair of cutters; a drive mechanism configured to drive the pair of cutters to close or open with each other along a first direction; and a gap adjustment mechanism configured to drive at least one of the pair of cutters to move along a second direction before the drive mechanism drives the pair of cutters to open, thereby increasing the movement gap between the pair of cutters; wherein the first direction and the second direction intersect.

[0006] The cutting device of this application embodiment has a gap adjustment mechanism, which can drive at least one of the pair of cutters to move in a second direction before the pair of cutters are opened, so as to increase the movement gap between the pair of cutters. The pair of cutters will not contact each other during the opening process, which reduces the wear that occurs during the cutting of the material strip by the pair of cutters, thereby improving the service life of the cutting device.

[0007] According to some embodiments of this application, the first direction and the second direction are perpendicular.

[0008] In the above scheme, the mutual closing direction of a pair of cutters is set perpendicular to the direction of adjustment of the cutter's movement gap, which makes the cutting device simple in structure and easy to design and process.

[0009] According to some embodiments of this application, the gap adjustment mechanism is further configured to drive at least one of the pair of cutters to reset in the opposite direction of the second direction before the drive mechanism drives the pair of cutters to close.

[0010] In the above scheme, after a pair of cutters close, the gap adjustment mechanism can also drive at least one of the cutters to reset, so that the movement gap between the pair of cutters returns to the preset value, so that the pair of cutters can open again with the preset movement gap to cut the strip, ensuring the cutting quality of the strip.

[0011] According to some embodiments of this application, the pair of cutters are a first cutter and a second cutter; the drive mechanism is configured to drive the first cutter to reciprocate along the first direction; the gap adjustment mechanism is configured to drive the second cutter to move along the second direction and reset in the opposite direction of the second direction.

[0012] In the above scheme, the first cutter moves closer to or further away from the second cutter by reciprocating along a first direction, so that the pair of cutters close or open with each other; the second cutter moves along a second direction to increase the movement gap between the pair of cutters, and resets along the opposite direction of the second direction to restore the gap between the pair of cutters to a preset value. The drive mechanism and the gap adjustment mechanism act on the two cutters of the pair of cutters respectively, which simplifies the structure of the cutting device and facilitates the design and processing of the cutting device.

[0013] According to some embodiments of this application, the gap adjustment mechanism includes: a driving member for driving the second cutter to move along the second direction; and an elastic reset member for driving the second cutter to reset in the opposite direction of the second direction.

[0014] In the above scheme, the second cutter is driven to move by the driving component to increase the movement gap between the pair of cutters, which can reliably increase the movement gap between the pair of cutters and avoid secondary wear during the opening process of the pair of cutters; the second cutter is driven to reset by the elastic reset component, which can drive the second cutter to approach the first cutter by the elastic force when the driving component is unloaded, so that the movement gap is restored to the preset value. The structure is simple and easy to implement.

[0015] According to some embodiments of this application, the cutting device further includes a base; wherein the driving mechanism is fixed to the base, the driving mechanism is configured to drive the first cutter to move relative to the base, the second cutter is slidably mounted on the base along the second direction, and the gap adjustment mechanism is configured to drive the second cutter to move relative to the base.

[0016] In the above scheme, both the drive mechanism and the second cutter are mounted on the base, which enables the cutting device to be connected to the external frame through the base, thereby reducing the difficulty of connecting the cutting device to the external frame.

[0017] According to some embodiments of this application, the base is provided with a mounting hole, and the cutting device further includes: a guide rod extending along the second direction, the guide rod being slidably inserted through the mounting hole, and one end of the guide rod being connected to the second cutter; wherein, the driving member is sleeved on the guide rod.

[0018] In the above scheme, the guide rod is fixedly connected to the second cutter, and the guide rod is slidably installed on the base. When the driving component drives the second cutter to move relative to the base, it can restrict the movement of the second cutter along the second direction. Moreover, the driving component is sleeved on the guide rod, which can realize the driving component driving the second cutter to move relative to the base along the second direction. The structure is simple and the assembly is convenient.

[0019] According to some embodiments of this application, the other end of the guide rod is provided with a limiting part, the elastic reset member is sleeved on the guide rod, and the two ends of the elastic reset member abut against the limiting part and the base respectively.

[0020] In the above scheme, the elastic reset member is sleeved on the guide rod, which enables the elastic reset member to abut against the limiting part and the base in the second direction, so as to drive the second cutter fixedly connected to the guide rod to reset in the opposite direction of the second direction by acting on the limiting part.

[0021] According to some embodiments of this application, both the elastic reset member and the driving member are disposed in the mounting hole, and the inner wall of the mounting hole is provided with a protrusion, the two sides of the protrusion respectively abutting against the elastic reset member and the driving member.

[0022] In the above scheme, a protrusion is provided on the inner wall of the mounting hole, and the two sides of the protrusion abut against the elastic reset member and the driving member respectively. This allows both the elastic reset member and the driving member to be accommodated in the mounting hole, making the gap adjustment mechanism compact and occupying less space. Furthermore, one end of the elastic reset member and one end of the driving member abut against the protrusion to achieve contact with the base.

[0023] According to some embodiments of this application, the protrusion is an annular protrusion extending circumferentially along the mounting hole.

[0024] In the above scheme, the protrusion is set as an annular protrusion extending circumferentially along the mounting hole, which can make one end of the elastic reset member and one end of the drive member evenly abut against the protrusion along the circumferential direction of the mounting hole.

[0025] According to some embodiments of this application, the cutting device further includes: a slider fixed to the second cutter; a guide fixed to the base and cooperating with the slider, the guide being used to guide the slider to move along the second direction; wherein, one end of the guide rod is connected to the slider.

[0026] In the above scheme, the second cutter slides and the guide along the second direction through a slider, which can simply and reliably achieve the sliding engagement between the second cutter and the base.

[0027] According to some embodiments of this application, the driving element is a piezoelectric ceramic.

[0028] In the above scheme, the piezoelectric ceramic undergoes a small deformation under the action of an electric field, and reacts quickly, enabling high-precision spacing adjustment in a short time, and timely driving the second cutter to move with high precision, so as to accurately increase the movement gap between the pair of cutters.

[0029] According to some embodiments of this application, the cutting device further includes: a guide plate, fixed to the second cutter, for guiding the material strip into the gap between the first cutter and the second cutter.

[0030] In the above scheme, the guide plate can guide the material strip into the gap between the first cutter and the second cutter, so that the first cutter and the second cutter cut the material strip along the thickness direction, thereby reducing the area of ​​the cut surface of the material strip and improving the cutting quality of the material strip.

[0031] According to some embodiments of this application, the driving mechanism is a voice coil motor.

[0032] In the above solution, the voice coil motor has the advantages of small size, high speed and high acceleration response. It can not only occupy a small installation space, but also achieve high-precision driving of the first cutter to reciprocate at high speed in the first direction. This not only improves the cutting efficiency of the strip, but also reduces the amount of metal dust generated during the cutting process due to the high-speed cutting condition, thus improving the cutting quality of the strip and extending the service life of the cutting device.

[0033] According to some embodiments of this application, two drive mechanisms are provided, and the two drive mechanisms are spaced apart along a third direction, which is perpendicular to the first direction and the second direction.

[0034] In the above scheme, the two drive mechanisms are spaced apart along the third direction, which can apply force evenly to the first cutter along the third direction, avoiding uneven force on the first cutter in the third direction and thus preventing skewing and reducing the cutting quality of the strip.

[0035] A second aspect of this application provides a cutting method, including:

[0036] A pair of cutters are driven to close together in a first direction to cut the strip of material;

[0037] Drive at least one of the pair of cutters to move along a second direction to increase the movement gap between the pair of cutters, wherein the first direction and the second direction intersect;

[0038] The pair of cutters are driven to open in the opposite direction to the first direction.

[0039] During the cutting process of the material strip using the cutting method of the present application embodiment, since the movement gap of the pair of cutters is increased before opening, the pair of cutters will not contact each other during the opening process, which reduces the wear of the pair of cutters during the cutting of the material strip, thereby improving the service life of the cutting device.

[0040] According to some embodiments of this application, after driving the pair of cutters to open in the opposite direction to the first direction, the cutting method further includes:

[0041] Drive at least one of the pair of cutters to reset in the opposite direction of the second direction.

[0042] In the above scheme, after a pair of cutters are opened, at least one of the cutters is driven to reset in the opposite direction of the second direction, which can restore the cutter spacing when cutting the strip, thereby ensuring the cutting accuracy when the pair of cutters close together again.

[0043] A third aspect of this application provides a battery manufacturing apparatus, comprising:

[0044] A conveying device used to transport electrode sheets;

[0045] The cutting device described in the first aspect of this application is used to cut the electrode sheet.

[0046] In the battery manufacturing equipment of this application embodiment, the cutting device has a gap adjustment mechanism, which can reduce the wear that occurs during the cutting of the material strip by a pair of cutters, and has a better service life, thereby improving the service life of the battery manufacturing equipment.

[0047] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 The image shown is an isometric view of the cutting device from one perspective in some embodiments of this application;

[0050] Figure 2 What is shown is Figure 1 A cross-sectional view along the AA direction;

[0051] Figure 3What is shown is Figure 2 A magnified view of a section at point B in the middle;

[0052] Figure 4 What is shown is Figure 3 A magnified view of point C in the image;

[0053] Figure 5 What is shown is Figure 1 A cross-sectional view along the DD direction in the middle;

[0054] Figure 6 The diagram shown is an isometric view of a cutting apparatus according to some embodiments of this application from another perspective;

[0055] Figure 7 What is shown is Figure 6 A cross-sectional view along the EE direction in the middle;

[0056] Figure 8 The diagram shown is a flowchart of a first embodiment of the cutting method of some embodiments of this application;

[0057] Figure 9 This diagram illustrates a flowchart of a second embodiment of the cutting method of some embodiments of this application;

[0058] Figure 10 The diagram shown is a structural schematic of a battery manufacturing apparatus according to some embodiments of this application.

[0059] Icons: 1000 - Battery manufacturing equipment; 100 - Cutting device; 110 - Pair of cutters; 111 - First cutter; 112 - Second cutter; 120 - Drive mechanism; 130 - Gap adjustment mechanism; 131 - Drive component; 132 - Elastic reset component; 140 - Base; 141 - First part; 142 - Second part; 143 - Third part; 144 - Mounting hole; 1441 - Inner wall; 1442 - Protrusion; 14421 - First side; 14422 - Second side; 1443 - First opening; 1444 - Second opening; 150-guide rod; 151-limiting part; 160-slider; 161-through hole; 170-guide component; 171-housing; 172-cover; 173-third opening; 180-guide plate; 191-first bracket; 192-second bracket; 193-third bracket; 194-guide assembly; 200-conveying device; Z-first direction; Z1-positive direction of first direction; Z2-opposite direction of first direction; X-second direction; X1-positive direction of second direction; X2-opposite direction of second direction; Y-third direction. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0062] In this application, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0063] In the description of this application, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] In this application, "multiple" means two or more (including two).

[0065] The cutting device includes a pair of oppositely arranged cutters that work together to cut the electrode sheet. The inventors discovered that the cutters of the cutting device are prone to wear and have a very short service life. Therefore, to improve the service life of the cutters, the inventors used blades with higher hardness to prevent premature wear; however, the service life of the cutters was not significantly extended. To address this, the inventors, through long-term research, discovered that during the cutting process, hard dust particles from the active material layer on the electrode sheet surface detach. As the cutters close or open, these hard dust particles become trapped in the gap between them, causing wear on the cutter surfaces. Over time, this makes the cutters extremely prone to wear, severely reducing the service life of the cutting device.

[0066] In response to the above findings, the inventors considered increasing the movement gap between the pair of cutters during the opening process to avoid wear on the surfaces of the pair of cutters by hard dust during the cutting process, thereby improving the service life of the cutting device.

[0067] Based on the above ideas, this application provides a new technical solution that increases the movement gap between a pair of cutters before they reset, thereby avoiding wear during the reset process and improving the service life of the cutting device.

[0068] Therefore, this application proposes a cutting device and a cutting method for cutting electrode sheets, which can reduce the wear of the cutting device and improve the service life of the cutting device.

[0069] Figure 1 The image shown is an isometric view of the cutting device from one perspective in some embodiments of this application; Figure 2 What is shown is Figure 1 A cross-sectional view along the AA direction; Figure 3 What is shown is Figure 2 A magnified view of a section at point B in the middle.

[0070] like Figure 1 , Figure 2 and Figure 3 As shown, some embodiments of this application propose a cutting device 100, including a pair of cutters 110, a drive mechanism 120, and a gap adjustment mechanism 130. The drive mechanism 120 is configured to drive the pair of cutters 110 to close or open relative to each other along a first direction Z. The gap adjustment mechanism 130 is configured to drive at least one of the pair of cutters 110 to move along a second direction X before the drive mechanism 120 drives the pair of cutters 110 to open, thereby increasing the movement gap between the pair of cutters 110. The first direction Z and the second direction X intersect.

[0071] The phrase "a pair of cutters 110 close together along the first direction Z" means that the pair of cutters 110 are close to each other in the first direction Z to cut the strip; the phrase "a pair of cutters 110 open along the first direction Z" means that the blades of the pair of cutters 110 are far apart from each other in the first direction Z to reset, ready for the next cutting of the strip.

[0072] There are several ways to implement a pair of cutters 110 that can be closed or opened along the first direction Z. One cutter 110 may move closer to or further away from the other along the first direction Z; or both cutters may move simultaneously in opposite directions.

[0073] The movement gap between a pair of cutters 110 refers to the distance between the close-to-each surfaces of the pair of cutters 110 in the second direction X.

[0074] There are various ways to increase the movement gap between a pair of cutters 110 by moving one of them along the second direction X. For example, one of the cutters 110 may move away from the other along the second direction X to increase the movement gap between the pair of cutters 110; or the two cutters may move simultaneously in opposite directions to move away from each other.

[0075] The thickness direction of the pair of cutters 110 can be parallel to or inclined to the second direction X. The conveying direction of the material strip can be parallel to the second direction X, and the cutting device 100 cuts the material strip along its width direction; alternatively, the conveying direction of the material strip can be inclined to the second direction X, and the cutting device 100 cuts the material strip along a direction inclined to the width direction of the material strip. The first direction Z and the second direction X can be perpendicular to each other or inclined. The pair of cutters 110 can be ordinary cutters or ultrasonic cutters. The drive mechanism 120 and the gap adjustment mechanism 130 can be electrically controlled drive components to achieve automated cutting operations.

[0076] In some embodiments of this application, the strip is an electrode sheet, which is used to form the cell of a battery cell. In other embodiments, the strip may also be a composite strip formed by laminating an electrode sheet and a separator, or it may be other forms of metal strip or a composite strip including a metal interlayer.

[0077] The cutting device 100 of this application embodiment includes a gap adjustment mechanism 130, which can drive at least one of the pair of cutters 110 to move along the second direction X before the pair of cutters 110 are opened, so as to increase the movement gap between the pair of cutters 110. The pair of cutters 110 will not contact each other during the opening process, thereby reducing the wear that occurs during the cutting of the material strip by the pair of cutters 110, and thus improving the service life of the cutting device 100.

[0078] In some embodiments of this application, the first direction Z and the second direction X are perpendicular.

[0079] The first direction Z can be horizontal, vertical, or other directions. For example, if the first direction Z is vertical and the second direction X is horizontal, the material belt is conveyed horizontally and the thickness direction of the material belt extends vertically; or, if the first direction Z is horizontal and the second direction X is vertical, the material belt is conveyed vertically and the thickness direction of the material belt extends horizontally.

[0080] In the above scheme, the mutual closing direction of the pair of cutters 110 is set perpendicular to the direction of adjustment of the movement gap of the cutters, which makes the cutting device 100 simple in structure and easy to design and process.

[0081] In some embodiments of this application, the gap adjustment mechanism 130 is also configured to drive at least one of the pair of cutters 110 to reset in the opposite direction X2 of the second direction before the drive mechanism 120 drives the pair of cutters 110 to close.

[0082] The gap adjustment mechanism 130 is configured not only to drive at least one of the pair of cutters 110 to move along the positive direction X1 of the second direction before the pair of cutters 110 are opened, so as to increase the movement gap between the pair of cutters 110, but also to drive at least one of the pair of cutters 110 to move along the opposite direction X2 of the second direction after the pair of cutters 110 are opened to the position, so as to reset the movement gap between the pair of cutters 110.

[0083] In the above scheme, after a pair of cutters 110 close, the gap adjustment mechanism 130 can also drive at least one of the pair of cutters 110 to reset, so that the movement gap between the pair of cutters 110 is restored to a preset value, so that the pair of cutters 110 can open again with a preset movement gap to cut the strip, ensuring the cutting quality of the strip.

[0084] like Figure 2 and Figure 3 As shown, in some embodiments of this application, a pair of cutters 110 are a first cutter 111 and a second cutter 112, respectively, and a drive mechanism 120 is configured to drive the first cutter 111 to reciprocate along the first direction Z; the gap adjustment mechanism 130 is configured to drive the second cutter 112 to move along the second direction X and reset along the opposite direction X2 of the second direction.

[0085] like Figure 3As shown, the drive mechanism 120 is configured to drive the first cutter 111 to move along the positive first direction Z1 to approach the second cutter 112, thereby closing the first cutter 111 and the second cutter 112 together; and to drive the first cutter 111 to move away from the second cutter 112 along the negative first direction Z2, thereby opening the first cutter 111 and the second cutter 112 together. The gap adjustment mechanism 130 is configured to drive the second cutter 112 to move along the positive second direction X1 to increase the movement gap between the first cutter 111 and the second cutter 112, and to drive the second cutter 112 to move along the negative second direction X2 to reset the movement gap between the first cutter 111 and the second cutter 112.

[0086] The drive mechanism 120 can be a variety of electrical components that drive the first cutter 111 to reciprocate linearly, such as cylinders, electric actuators, cam mechanisms, motors, etc.

[0087] In the above scheme, the first cutter 111 moves closer to or further away from the second cutter 112 by reciprocating along the first direction Z, so that the first cutter 111 and the second cutter 112 close or open with each other; the second cutter 112 moves along the second direction X to increase the movement gap between the first cutter 111 and the second cutter 112, and resets along the opposite direction X2 of the second direction to restore the gap between the first cutter 111 and the second cutter 112 to a preset value. The drive mechanism 120 acts on the first cutter 111, and the gap adjustment mechanism 130 acts on the second cutter 112, which simplifies the structure of the cutting device 100 and facilitates the design and processing of the cutting device 100.

[0088] In other embodiments, the drive mechanism 120 and the gap adjustment mechanism 130 can act solely on either the first cutter 111 or the second cutter 112, or the first cutter 111 and the second cutter 112 can each be equipped with a corresponding drive mechanism 120 and gap adjustment mechanism 130. As a preferred embodiment, along the conveying direction of the material strip, the first cutter 111 is located downstream of the second cutter 112. After the first cutter 111 and the second cutter 112 close together to cut the material strip, the cut end of the material strip is flush with the second cutter 112. The gap adjustment mechanism 130 can be configured to drive the first cutter 111 to move away from the second cutter 112, thereby increasing the movement gap between the pair of cutters 110. This not only prevents wear between the first cutter 111 and the second cutter 112, but also prevents wear between the first cutter 111 and the cut surface of the material strip, further improving the cutting quality of the material strip and the service life of the cutting device 100.

[0089] like Figure 2 and Figure 3As shown, in some embodiments of this application, the gap adjustment mechanism 130 includes a driving member 131 and an elastic reset member 132. The driving member 131 is used to drive the second cutter 112 to move along the second direction X, and the elastic reset member 132 is used to drive the second cutter 112 to reset along the opposite direction X2 of the second direction.

[0090] The driving member 131 driving the second cutter 112 to move along the second direction X means that the driving member 131 drives the second cutter 112 to move along the positive direction X1 of the second direction. The driving member 131 is a driving mechanism 120 with the advantages of high precision and short response time, such as piezoelectric ceramic, electric actuator, motor lead screw and nut mechanism, etc. The elastic reset member 132 can accumulate elastic force when the driving member 131 drives the second cutter 112 to move along the positive direction X1 of the second direction, and release elastic force when the driving member 131 unloads force, so as to drive the second cutter 112 to reset along the opposite direction X2 of the second direction. The elastic reset member 132 can be a mechanical spring, gas spring, etc. The driving member 131 and the elastic reset member 132 can be set independently, or they can be installed on the first cutter 111 and / or the second cutter 112 through the same connecting member (such as the guide rod 150 described below).

[0091] In the above scheme, the second cutter 112 is driven to move by the driving member 131 to increase the movement gap between the pair of cutters 110, which can reliably increase the movement gap between the pair of cutters 110 and avoid secondary wear during the opening process of the pair of cutters 110; the second cutter 112 is driven to reset by the elastic reset member 132, which can drive the second cutter 112 to approach the first cutter 111 by elastic force when the driving member 131 is unloaded, so that the movement gap is restored to the preset value. The structure is simple and easy to implement.

[0092] Figure 4 What is shown is Figure 3 A magnified view of point C in the image; Figure 5 What is shown is Figure 1 A cross-sectional view along the DD direction in the image.

[0093] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of this application, the cutting device 100 further includes a base 140, wherein a drive mechanism 120 is fixed to the base 140, the drive mechanism 120 is configured to drive a first cutter 111 to move relative to the base 140, a second cutter 112 is slidably mounted on the base 140 along a second direction X, and a gap adjustment mechanism 130 is configured to drive the second cutter 112 to move relative to the base 140.

[0094] The base 140 is used for fixed connection with an external frame and for mounting the drive mechanism 120, the first cutter 111, and the second cutter 112, etc.

[0095] like Figure 5 As shown, the cutting device 100 also includes a first bracket 191 and a second bracket 192. A first cutter 111 is fixed to the first bracket 191, and the first bracket 191 is mounted on the execution end of the drive mechanism 120 to mount the first cutter 111 on the execution end of the drive mechanism 120; a second cutter 112 is fixed to the second bracket 192, and the second bracket 192 slides with the base 140 in the second direction X to realize that the second cutter 112 is slidably mounted on the base 140 in the second direction X.

[0096] The gap adjustment mechanism 130 can be fixed to the base 140, and its actuator drives the second bracket 192 to move along the positive direction X1 of the second direction; the gap adjustment mechanism 130 can also abut between the base 140 and the second bracket 192, and by changing its own length along the second direction X, drive the second bracket 192 to move relative to the base 140 along the positive direction X1 of the second direction.

[0097] In the above scheme, the drive mechanism 120 and the second cutter 112 are both mounted on the base 140, which enables the cutting device 100 to be connected to the external frame through the base 140, thereby reducing the difficulty of connecting the cutting device 100 to the external frame.

[0098] like Figure 3 As shown, in some embodiments of this application, the base 140 is provided with a mounting hole 144, and the cutting device 100 further includes a guide rod 150, which extends along the second direction X and is slidably inserted through the mounting hole 144. One end of the guide rod 150 is connected to the second cutter 112; wherein, the driving member 131 is sleeved on the guide rod 150.

[0099] The cross-section of the guide rod 150 can be circular, elliptical, or square, etc. The guide rod 150 is fixedly connected to the second bracket 192 so as to be connected to the second cutter 112 through the second bracket 192. The guide rod 150 is used to install the drive component 131.

[0100] like Figure 1As shown, the base 140 includes a first part 141, a second part 142, and a third part 143. The first part 141 and the second part 142 are spaced apart along a third direction Y. The third part 143 connects the first part 141 and the second part 142. The first part 141, the second part 142, and the third part 143 together enclose a cavity. The drive mechanism 120 is mounted on the third part 143. The second bracket 192 and the second cutter 112 are accommodated in the cavity. The two ends of the second bracket 192 along the third direction Y are respectively slidably engaged with the first part 141 and the second part 142 along the second direction X. The third direction Y is perpendicular to the first direction Z and the second direction X. The length directions of both the first cutter 111 and the second cutter 112 extend along the third direction Y.

[0101] like Figure 3 As shown, the mounting hole 144 penetrates the first portion 141 along the second direction X. Specifically, the two ends of the mounting hole 144 are a first opening 1443 and a second opening 1444, respectively. The first opening 1443 exposes the surface of the first portion 141, and the second opening 1444 can expose either the surface of the first portion 141 or the groove wall of the groove on the first portion 141. One end of the guide rod 150 exposes the surface of the first portion 141 from the first opening 1443, and the other end extends from the second opening 1444 and is fixedly connected to the second bracket 192. The other end of the guide rod 150 can be directly connected to the second bracket 192 or indirectly connected through an intermediate connector.

[0102] The drive member 131 can be fully exposed outside the mounting hole 144, with its two ends abutting against the outer surface of the base 140 and the second bracket 192, respectively; the drive member 131 can also be at least partially accommodated inside the mounting hole 144, abutting against a portion of the structure of the base 140 (i.e., the protrusion 1442 described below) inside the mounting hole 144.

[0103] In the above scheme, the guide rod 150 is fixedly connected to the second cutter 112, and the guide rod 150 is slidably installed on the base 140. When the driving member 131 drives the second cutter 112 to move relative to the base 140, it can restrict the movement of the second cutter 112 along the second direction X. Moreover, the driving member 131 is sleeved on the guide rod 150, which can realize the driving member 131 driving the second cutter 112 to move relative to the base 140 along the second direction X. The structure is simple and the assembly is convenient.

[0104] like Figure 3 As shown, in some embodiments of this application, the other end of the guide rod 150 is provided with a limiting part 151, and the elastic reset member 132 is sleeved on the guide rod 150. The two ends of the elastic reset member 132 abut against the limiting part 151 and the base 140 respectively.

[0105] The guide rod 150 can be a bolt, which includes a head and a rod. The head is configured as a limiting part 151. The elastic reset member 132 and the driving member 131 are both sleeved on the rod. The tail end of the rod is threadedly engaged with the second bracket 192. The guide rod 150 can also be a rod with an annular boss, which is configured as a limiting part 151. The end of the rod is threadedly connected to or snapped into the second bracket 192.

[0106] The elastic reset member 132 can be completely exposed outside the base 140. One end of the elastic reset member 132 abuts against the limiting part 151, and the other end abuts against the outer surface of the base 140. The elastic reset member 132 can also be at least partially accommodated inside the mounting hole 144, and abut against a part of the structure of the base 140 (i.e., the protrusion 1442 described below) inside the mounting hole 144.

[0107] In the above scheme, the elastic reset member 132 is sleeved on the guide rod 150, which enables the elastic reset member 132 to abut against the limiting part 151 and the base 140 along the second direction X, so as to drive the second cutter 112 fixedly connected to the guide rod 150 to reset in the opposite direction of the second direction X by acting on the limiting part 151.

[0108] like Figure 3 and Figure 4 As shown, in some embodiments of this application, the elastic reset member 132 and the driving member 131 are both disposed in the mounting hole 144. The inner wall 1441 of the mounting hole 144 is provided with a protrusion 1442, and the two sides of the protrusion 1442 abut against the elastic reset member 132 and the driving member 131 respectively.

[0109] Specifically, along the second direction X, the guide rod 150 exposes the outer surface of the base 140 from the first opening 1443 and abuts against the elastic reset member 132 through the limiting part 151. It exposes the outer surface of the base 140 from the second opening 1444 and connects to the second bracket 192. Along the second direction X, the two sides of the protrusion 1442 are a first side 14421 and a second side 14422, respectively. The first side 14421 faces the first opening 1443, and the second side 14422 faces the second opening 1444. One end of the driving member 131 abuts against the second side 14422, and the other side abuts directly or indirectly against the second bracket 192. The two ends of the elastic reset member 132 abut between the limiting part 151 and the first side 14421, respectively.

[0110] In the above scheme, a protrusion 1442 is provided on the inner wall 1441 of the mounting hole 144, and the two sides of the protrusion 1442 abut against the elastic reset member 132 and the driving member 131 respectively. This allows both the elastic reset member 132 and the driving member 131 to be accommodated in the mounting hole 144, making the gap adjustment mechanism 130 compact and occupying less space. Furthermore, one end of the elastic reset member 132 and one end of the driving member 131 abut against the protrusion 1442 to achieve contact with the base 140.

[0111] In some embodiments of this application, the protrusion 1442 is an annular protrusion 1442 extending circumferentially along the mounting hole 144.

[0112] The axial direction of the mounting hole 144 is parallel to the first direction Z, and the circumferential direction of the mounting hole 144 is the direction in which it extends around the axial direction of the mounting hole 144. The guide rod 150 passes through the protrusion 1442 along the second direction X, and the drive member 131 and the elastic reset member 132 both abut against the protrusion 1442 to achieve contact with the base 140.

[0113] In the above scheme, the protrusion 1442 is set as an annular protrusion 1442 extending circumferentially along the mounting hole 144, which can make one end of the elastic reset member 132 and one end of the drive member 131 evenly abut against the protrusion 1442 along the circumferential direction of the mounting hole 144.

[0114] In other embodiments, multiple protrusions 1442 may be provided, with the multiple protrusions 1442 spaced apart circumferentially along the mounting hole 144.

[0115] like Figure 3 As shown in some embodiments of this application, the cutting device 100 further includes a slider 160 and a guide 170. The slider 160 is fixed to the second cutter 112, and the guide 170 is fixed to the base 140 and cooperates with the slider 160. The guide 170 is used to guide the slider 160 to move along the second direction X. One end of the guide rod 150 is connected to the slider 160.

[0116] Specifically, the slider 160 is fixedly connected to the second bracket 192. The slider 160 has a through hole 161 extending along the first direction Z. The guide rod 150 is inserted into the through hole 161 and threaded into the through hole 161, so that the guide rod 150 is fixedly connected to the second cutter 112 through the slider 160. The first part 141 of the base 140 also has a groove extending along the third direction Y. The slider 160 is disposed in the groove, and the second opening 1444 of the mounting hole 144 exposes the groove wall.

[0117] The guide member 170 is fixedly connected to the base 140, and the guide member 170 and the slider 160 are slidably engaged along the second direction X. The guide member 170 includes a housing 171 and a cover 172 (see reference). Figure 1The housing 171 and the cover 172 are mounted on both sides of the first part 141 along the third direction Y. The housing 171 is fixedly disposed in the groove and has a third opening 173 corresponding to the second opening 1444 of the mounting hole 144. The housing 171 has a receiving cavity, and the slider 160 is slidably mounted in the receiving cavity along the second direction X, and its sliding limit position is limited by the inner wall 1441 of the receiving cavity. One end of the drive member 131 extends into the receiving cavity through the third opening 173 to abut against the slider 160.

[0118] The housing 171 is disposed in the cavity of the base 140, and the cover 172 is connected to the base 140 from the outside of the base 140 by a threaded part, so as to enclose the slider 160 in the receiving cavity of the housing 171.

[0119] The guide rod 150, gap adjustment mechanism 130, slider 160, and guide member 170 constitute a gap adjustment unit. This unit not only enables the base 140 and the second cutter 112 to slide in the second direction X, but also drives the second cutter 112 to displace relative to the base 140 in the second direction X. In some embodiments of this application, two gap adjustment units are provided: one in the first part 141 and the other in the second part 142. The two units synchronously drive the second support 192 to displace in the second direction X from both ends of the second support 192 along the third direction Y. In other embodiments, only one gap adjustment unit may be provided: the first part 141 is equipped with the gap adjustment unit, and the second part 142 slides in contact with the base 140 only through the slider 160 and guide member 170, without a corresponding gap adjustment mechanism 130.

[0120] In the above scheme, the second cutter 112 slides with the guide member 170 along the second direction X through the slider 160, which can simply and reliably realize the sliding engagement between the second cutter 112 and the base 140.

[0121] In other embodiments, the second bracket 192 and the base 140 can also be slidably engaged via a guide rail assembly.

[0122] According to some embodiments of this application, the drive element 131 is a piezoelectric ceramic.

[0123] Piezoelectric ceramics utilize their material properties to undergo mechanical deformation under voltage and to polarize due to the relative displacement of internal positive and negative charge centers under mechanical stress, thus exhibiting the piezoelectric effect. When energized, piezoelectric ceramics can elongate in the direction of the two electrodes (i.e., the second direction X) and shrink back to their original size when de-energized.

[0124] like Figure 3As shown, the piezoelectric ceramic is sleeve-shaped and is fitted onto the guide rod 150. Both ends of the piezoelectric ceramic abut against the protrusion 1442 and the slider 160, respectively. When energized, the piezoelectric ceramic elongates to drive the second support 192 to move along the positive direction X1 of the second direction, thereby increasing the movement gap between the first cutter 111 and the second cutter 112. When de-energized, the piezoelectric ceramic shortens to release the second cutter 112, which then resets along the opposite direction X2 of the second direction under the action of the elastic reset member 132.

[0125] In the above scheme, the piezoelectric ceramic undergoes a small deformation under the action of an electric field, and reacts quickly, enabling high-precision spacing adjustment in a short time, and timely driving the second cutter 112 to move with high precision, so as to accurately increase the movement gap of the pair of cutters 110.

[0126] Figure 6 The diagram shown is an isometric view of a cutting apparatus according to some embodiments of this application from another perspective;

[0127] Figure 7 What is shown is Figure 6 A cross-sectional view along the EE direction in the image.

[0128] like Figure 6 and Figure 7 As shown, in some embodiments of this application, the cutting device 100 further includes a guide plate 180, which is fixed to the second cutter 112 and is used to guide the material strip into the gap between the first cutter 111 and the second cutter 112.

[0129] The guide plate 180 is disposed on the material receiving side of a pair of cutters 110 and is used to correct the conveying direction of the material strip before the material strip enters the gap between the first cutter 111 and the second cutter 112, so that it is conveyed along the second direction X and the thickness direction is parallel to the first direction Z.

[0130] Two guide plates 180 may be provided, one guide plate 180 is fixed to the first part 141 of the base 140, and the other guide plate 180 is fixed to the second bracket 192, forming a gap between the two guide plates 180 through which the feed belt passes. Along the second direction X, one end of the two guide plates 180 is close to a pair of cutters 110, and the other end is flared to guide the feed belt into the gap between the two guide plates 180.

[0131] The guide plate 180 can also be provided as a single unit. The guide plate 180 is fixed to the second bracket 192 and is used to guide the material belt into the gap between a pair of cutters 110.

[0132] In the above scheme, the guide plate 180 can guide the material strip into the gap between the first cutter 111 and the second cutter 112, so that the first cutter 111 and the second cutter 112 cut the material strip along the thickness direction, thereby reducing the area of ​​the cut surface of the material strip and improving the cutting quality of the material strip.

[0133] In some embodiments of this application, the drive mechanism 120 is a voice coil motor.

[0134] As a type of direct drive motor, the voice coil motor generates force by placing an energized coil in a magnetic field, enabling high-speed reciprocating linear motion.

[0135] The cutting device 100 also includes a third bracket 193 and a guide assembly 194. The third bracket 193 is fixed to the third portion 143 of the base 140, and the drive mechanism 120 is fixed to the third bracket 193. The third portion 143 of the base 140 has an opening for extending along the first direction Z. The guide assembly 194 is fixed to the base 140 and disposed in the opening. The output shaft of the voice coil motor passes through the inner hole of the guide assembly 194 and is connected to the first bracket 191 by a threaded connection. The voice coil motor can drive the first bracket 191 to reciprocate along the first direction Z, thereby driving the first cutter 111 to reciprocate along the first direction Z.

[0136] In the above scheme, the voice coil motor has the advantages of small size, high speed and high acceleration response. It can not only occupy a small installation space, but also achieve high precision drive of the first cutter 111 to reciprocate at high speed along the first direction Z. This not only improves the cutting efficiency of the strip, but also reduces the amount of metal dust generated during the cutting process due to the high-speed cutting condition, thus improving the cutting quality of the strip and extending the service life of the cutting device 100.

[0137] like Figure 6 and Figure 7 As shown, in some embodiments of this application, two drive mechanisms 120 are provided, and the two drive mechanisms 120 are spaced apart along a third direction Y, which is perpendicular to the first direction Z and the second direction X.

[0138] The first cutting blade 111 and the second cutting blade 112 extend along the third direction Y. Each drive mechanism 120 is mounted on the base 140 via a third bracket 193 and a guide assembly 194.

[0139] In the above scheme, the two drive mechanisms 120 are spaced apart along the third direction Y, which can apply force evenly to the first cutter 111 along the third direction Y, avoiding uneven force on the first cutter 111 in the third direction Y and thus reducing the cutting quality of the strip.

[0140] Figure 8The diagram shown is a flowchart of a first embodiment of the cutting method of some embodiments of this application; Figure 9 The diagram shown is a flowchart of a second implementation of the cutting method of some embodiments of this application.

[0141] like Figure 8 As shown, some embodiments of this application propose a cutting method, including:

[0142] S100: Drive a pair of cutters 110 to close together along the first direction Z to cut the strip;

[0143] S200: Drive at least one of the pair of cutters 110 to move along the second direction X to increase the movement gap between the pair of cutters 110, where the first direction Z and the second direction X intersect;

[0144] S300: Drives a pair of cutters 110 to open in the opposite direction Z2 of the first direction.

[0145] It is understood that the cutting methods of some embodiments of this application can be implemented, but are not limited to, using the cutting device 100 of some embodiments of this application. The cutting methods of some embodiments of this application will be specifically described below with reference to the cutting device 100 of some embodiments of this application.

[0146] In some embodiments of this application, S100: driving a pair of cutters 110 to close together along a first direction Z to cut the strip includes:

[0147] S110: The first cutter 111 switches between the extended position and the retracted position along the first direction Z. When the first cutter 111 moves to the extended position along the positive direction Z1 of the first direction, the pair of cutters 110 close together, and the drive mechanism 120 sends an extension signal.

[0148] In some embodiments of this application, S200: driving at least one of a pair of cutters 110 to move along the second direction X to increase the movement gap between the pair of cutters 110, wherein the first direction Z and the second direction X intersect, including:

[0149] S210: The drive unit 131 responds to the extension signal and is energized to extend along the second direction X, driving the second cutter 112 to move relative to the base 140 along the positive direction X1 of the second direction, thereby increasing the movement gap between the first cutter 111 and the second cutter 112.

[0150] In some embodiments of this application, S300: driving a pair of cutters 110 to open in the opposite direction Z2 of the first direction includes:

[0151] S310: After the drive unit 131 drives the second cutter 112 to move into position along the positive direction X1 of the second direction, it sends an entry signal. The drive mechanism 120 responds to the entry signal and drives the first cutter 111 to move to the retracted position along the opposite direction Z2 of the first direction, so that the pair of cutters 110 open.

[0152] During the cutting process of the material strip using the cutting method of this application embodiment, since the movement gap of the pair of cutters 110 is increased before opening, the pair of cutters 110 will not contact each other during the opening process, thereby reducing the wear of the pair of cutters 110 during the cutting of the material strip and thus improving the service life of the cutting device 100.

[0153] like Figure 8 As shown, in some embodiments of this application, after S300: driving a pair of cutters 110 to open in the opposite direction Z2 of the first direction, the cutting method further includes:

[0154] S400: Drive at least one of the pair of cutters 110 to reset in the opposite direction X2 of the second direction.

[0155] Further, S200: Driving at least one of the pair of cutters 110 to move along the second direction X to increase the movement gap between the pair of cutters 110, wherein the first direction Z and the second direction X intersect, including:

[0156] S220: The elastic reset member 132 is compressed in the second direction X to accumulate elastic force.

[0157] Furthermore, S300: driving a pair of cutters 110 to open in the opposite direction Z2 of the first direction, also includes:

[0158] S320: When the drive mechanism 120 drives the first cutter 111 to move in the opposite direction Z2 of the first direction to the retracted position, it sends a retraction signal.

[0159] Further, S400: driving at least one of the pair of cutters 110 to reset in the opposite direction of the second direction X includes:

[0160] S410: The drive unit 131 responds to the retraction signal and is powered off, and restores its original length to release the second cutter 112;

[0161] S420: The elastic reset member 132 restores its deformation along the second direction X and uses its elastic force to drive the second cutter 112 to reset in the opposite direction of the second direction X.

[0162] In the above scheme, after a pair of cutters 110 are opened, at least one of the pair of cutters 110 is driven to reset in the opposite direction of the second direction X, which can restore the cutter spacing when cutting the strip, thereby ensuring the cutting accuracy when the pair of cutters 110 close together again.

[0163] Figure 10 The diagram shown is a structural schematic of a battery manufacturing apparatus according to some embodiments of this application.

[0164] like Figure 10 As shown, some embodiments of this application disclose a battery manufacturing apparatus 1000, including a cutting device 100 and a conveying device 200. The conveying device 200 is used to convey electrode sheets, and the cutting device 100 is used to cut the electrode sheets.

[0165] In the battery manufacturing equipment 1000 of this application embodiment, the cutting device 100 has a gap adjustment mechanism 130, which can reduce the wear that occurs during the cutting of the material strip by a pair of cutters 110, and has a better service life, thereby improving the service life of the battery manufacturing equipment 1000.

[0166] like Figures 1 to 10As shown, some embodiments of this application propose a cutting device 100, including a pair of cutters 110, a drive mechanism 120, a gap adjustment mechanism 130, a base 140, a sliding assembly, a guide rod 150, a first bracket 191, a second bracket 192, a third bracket 193, and a guide assembly 194. The pair of cutters 110 includes a first cutter 111 and a second cutter 112 disposed opposite to each other. The first cutter 111 is mounted on the first bracket 191, and the second cutter 112 is mounted on the second bracket 192. The drive mechanism 120 is a voice coil motor, and the drive mechanism 120 is fixed to the base 140 via the third bracket 193. The base 140 is also equipped with a guide assembly 194, which is a needle roller guide sleeve. The output shaft of the drive mechanism 120 passes through the guide assembly 194 and is displaced along a first direction Z under the constraint of the guide assembly 194. Two drive mechanisms 120 are provided, spaced apart along the third direction Y. The output shafts of both drive mechanisms 120 are connected to the first bracket 191 to jointly drive the first cutter 111 to reciprocate along the first direction Z. The two ends of the second bracket 192 along the third direction Y are slidably mounted on the base 140 along the second direction X via sliding components. The sliding components include a slider 160 and a guide 170. The guide 170 is mounted on the base 140, and the slider 160 is slidably mounted on the guide 170 along the second direction X. The inner wall of the guide 170 limits the sliding limit position of the slider 160. The base 140 has a mounting hole 144, the inner wall of which has a protrusion 1442. A guide rod 150 passes through the mounting hole 144 along the second direction X. The guide rod 150 is a bolt, with a limiting part 151 formed at the head of the bolt, and the end of the bolt threadedly engaging with the slider 160. The gap adjustment mechanism 130 includes a driving member 131 and an elastic reset member 132. The driving member 131 is a precision piezoelectric ceramic, and the elastic reset member 132 is a straight spring. Both the driving member 131 and the elastic reset member 132 are sleeved on the guide rod 150. The driving member 131 abuts against the protrusion 1442 and the slider 160, and the elastic reset member 132 abuts against the limiting part 151 and the protrusion 1442.

[0167] When the drive mechanism 120 drives the first cutter 111 to perform a vertical stroke along the positive first direction Z1, the drive member 131 is de-energized and does not work. The first cutter 111 and the second cutter 112 have a movement gap suitable for cutting in the second direction X. After the first cutter 111 completes its stroke, the drive member 131 is energized and becomes longer, pushing the second cutter 112 to offset relative to the base 140 along the positive second direction X1, and compressing the elastic reset member 132, increasing the movement gap between the first cutter 111 and the second cutter 112 in the second direction X. While the drive unit 131 remains energized, the drive mechanism 120 drives the first cutter 111 to start its return stroke in the opposite direction Z2 of the first direction. During the return stroke, the gap between the first cutter 111 and the second cutter 112 increases, so that no wear will occur even if hard dust is mixed in. After the return stroke of the first cutter 111 is completed, the drive unit 131 is de-energized and returns to its original length. The elastic reset member 132 releases its elastic force to drive the second cutter 112 to reset, ready for the next cutting stroke.

[0168] In the cutting device 100 of this application embodiment, a precision piezoelectric ceramic is used as the driving component 131, which can adjust the movement gap between the pair of cutters 110 with high precision and fast after the pair of cutters 110 cut the strip, so that no secondary wear occurs during the opening and resetting process of the pair of cutters 110, thereby improving the cutting quality of the strip and the service life of the cutting device 100.

[0169] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0170] 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. A cutting device, characterized in that, include: A pair of cutting blades; A drive mechanism is configured to drive the pair of cutters to close or open relative to each other along a first direction, the pair of cutters being configured to close relative to each other along the first direction to cut the strip, and the pair of cutters being further configured to open along the first direction to prepare for the next cutting of the strip; as well as A gap adjustment mechanism is configured to drive at least one of the pair of cutters to move along a second direction before the drive mechanism drives the pair of cutters to open, so as to increase the movement gap between the pair of cutters; the gap adjustment mechanism is also configured to drive at least one of the pair of cutters to reset along the opposite direction of the second direction before the drive mechanism drives the pair of cutters to close. The first direction and the second direction intersect.

2. The cutting device according to claim 1, characterized in that, The first direction and the second direction are perpendicular.

3. The cutting device according to claim 1, characterized in that, The pair of cutters are a first cutter and a second cutter, respectively; The drive mechanism is configured to drive the first cutter to reciprocate along the first direction; The gap adjustment mechanism is configured to drive the second cutter to move along the second direction and to reset in the opposite direction of the second direction.

4. The cutting device according to claim 3, characterized in that, The gap adjustment mechanism includes: A driving component is used to drive the second cutter to move along the second direction; An elastic reset element is used to drive the second cutter to reset in the opposite direction of the second direction.

5. The cutting device according to claim 4, characterized in that, The cutting device also includes a base; The drive mechanism is fixed to the base and configured to drive the first cutter to move relative to the base. The second cutter is slidably mounted on the base along the second direction. The gap adjustment mechanism is configured to drive the second cutter to move relative to the base.

6. The cutting device according to claim 5, characterized in that, The base is provided with mounting holes, and the cutting device further includes: A guide rod extends along the second direction and is slidably inserted through the mounting hole; one end of the guide rod is connected to the second cutter. The driving component is sleeved on the guide rod.

7. The cutting device according to claim 6, characterized in that, The other end of the guide rod is provided with a limiting part, and the elastic reset member is sleeved on the guide rod. The two ends of the elastic reset member abut against the limiting part and the base, respectively.

8. The cutting device according to claim 7, characterized in that, Both the elastic reset member and the driving member are disposed in the mounting hole. The inner wall of the mounting hole is provided with a protrusion, and the two sides of the protrusion abut against the elastic reset member and the driving member, respectively.

9. The cutting device according to claim 8, characterized in that, The protrusion is an annular protrusion extending circumferentially along the mounting hole.

10. The cutting device according to claim 6, characterized in that, The cutting device further includes: The slider is fixed to the second cutter; A guide member, fixed to the base and cooperating with the slider, is used to guide the slider to move along the second direction; One end of the guide rod is connected to the slider.

11. The cutting device according to claim 4, characterized in that, The driving component is a piezoelectric ceramic.

12. The cutting device according to claim 3, characterized in that, The cutting device further includes: A guide plate, fixed to the second cutter, is used to guide the material strip into the gap between the first cutter and the second cutter.

13. The cutting device according to any one of claims 1-12, characterized in that, The drive mechanism is a voice coil motor.

14. The cutting device according to any one of claims 1-12, characterized in that, There are two drive mechanisms, which are spaced apart along a third direction, which is perpendicular to the first direction and the second direction.

15. A cutting method, characterized in that, include: A pair of cutters are driven to close together in a first direction to cut the strip of material; Drive at least one of the pair of cutters to move along a second direction to increase the movement gap between the pair of cutters, wherein the first direction and the second direction intersect; Drive the pair of cutters to open in the opposite direction to the first direction; Drive at least one of the pair of cutters to reset in the opposite direction of the second direction.

16. A battery manufacturing apparatus, characterized in that, include: A conveying device used to transport electrode sheets; The cutting device according to any one of claims 1-14 is used to cut the electrode sheet.

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