Cutting device and battery production line

Abstract

The application relates to the technical field of battery manufacturing, and provides a cutting knife device and a battery production line. The cutting knife device comprises a fixed cutting knife extending along a first direction; a movable cutting knife extending along the first direction and arranged on one side of the fixed cutting knife along a second direction, wherein the second direction is perpendicular to the first direction; a driving mechanism comprising a cutting knife sliding rail, a cutting knife sliding block and a transmission part, wherein the cutting knife sliding block is in sliding connection with the cutting knife sliding rail and is in transmission connection with the movable cutting knife through the transmission part, the cutting knife sliding block is configured to drive the movable cutting knife to move towards the fixed cutting knife or away from the fixed cutting knife under the condition of sliding relative to the cutting knife sliding rail, and a fixing support is provided with a crimping part, and the crimping part is arranged on the cutting knife sliding rail. According to the technical scheme, the cutting quality of the pole piece can be improved.

Description

Technical Field

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

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Currently, with the rapid development of the new energy industry, batteries are widely used in energy storage, electric vehicles and other industries.

[0004] The winding process is a crucial part of battery manufacturing. In the winding process, a cutting device is needed to stably cut the electrode sheets. However, when the cutting device becomes loose, it can easily cause abnormal movement of the moving cutter, resulting in a gap after the moving cutter and the fixed cutter close. This can lead to abnormal electrode sheet cutting and quality problems such as burrs and excess material. Utility Model Content

[0005] The purpose of this application is to provide a cutting device and a battery production line to improve the cutting quality of electrode sheets. This purpose is achieved through the following technical solution:

[0006] In a first aspect, this application provides a cutting device, comprising: a fixed cutting blade extending along a first direction; a movable cutting blade extending along the first direction and disposed on one side of the fixed cutting blade along a second direction, the second direction being perpendicular to the first direction; a driving mechanism including a cutting blade slide rail, a cutting blade slider, and a transmission component, the cutting blade slider being slidably connected to the cutting blade slide rail and being drively connected to the movable cutting blade through the transmission component, the cutting blade slider being configured to drive the movable cutting blade to move towards or away from the fixed cutting blade when sliding relative to the cutting blade slide rail; and a fixed bracket having a pressing portion pressing against the cutting blade slide rail.

[0007] According to the cutting device provided in this application, by setting a fixed bracket with a pressing part, the pressing part can press against the cutting slide rail to fix the cutting slide rail, thereby improving the stability of the installation and fixing of the cutting slide rail, thereby improving the stability of the transmission component and the moving cutting blade when the cutting slider moves back and forth relative to the cutting slide rail, thereby reducing the gap generated when the moving cutting blade and the fixed cutting blade cooperate to cut the workpiece (e.g., electrode sheet), and thus improving the cutting quality of the workpiece.

[0008] In addition, the cutting device provided in this application may also have the following additional technical features:

[0009] In some embodiments of this application, the fixed bracket includes: a bracket body, which is disposed on the side of the cutter slide rail opposite to the movable cutter along the second direction and extends along the first direction; at least one fixing body, one end of which is connected to the bracket body and the other end of which extends along the second direction to the top surface of the cutter slide rail; wherein the fixing body is provided with the pressing portion.

[0010] By providing at least one fixing body on one side of the bracket body, and having the fixing body extend to the top surface of the cutter slide rail and be pressed against the cutter slide rail by the pressing part, the cutter slide rail can be fixed, thereby reducing the risk of the cutter slide rail shaking.

[0011] In some embodiments of this application, the number of fixing bodies is two, the two fixing bodies are spaced apart along the first direction, and a space is defined between the two fixing bodies to allow for the movement stroke of the cutter slider and the transmission member.

[0012] By setting the number of fixed bodies to two, the number of cutter slide rails is increased, thereby further improving the stability of the cutter slide rail fixation. Furthermore, by arranging the two cutter slide rails spaced apart along the first direction, the travel distance of the cutter slider and the transmission component can be limited, thereby limiting the travel distance between the moving cutter and the fixed cutter. This reduces the risk of abnormalities and damage during electrode cutting caused by excessive movement between the moving and fixed cutters.

[0013] In some embodiments of this application, the fixing body is provided with a crimping part on the side facing the cutter slide rail, and the crimping part is pressed against the cutter slide rail.

[0014] By setting a crimping part on the side of the fixing body facing the cutter slide rail, the crimping part is directly pressed onto the cutter slide rail to fix the cutter slide rail. This eliminates the need for additional assembly parts, helps improve assembly efficiency, and reduces costs.

[0015] In some embodiments of this application, the crimping portion includes a recess, the recess having a first crimping surface and a second crimping surface, the first crimping surface and the second crimping surface being connected; wherein, the first crimping surface abuts against the top surface of the cutter slide rail, the second crimping surface abuts against one side surface of the cutter slide rail, and the side surface is connected to the top surface.

[0016] The crimping part has a first crimping surface and a second crimping surface. The first crimping surface and the second crimping surface are partially recessed on the side of the fixing body facing the cutter slide rail. By crimping the first crimping surface to the top surface of the cutter slide rail and the second crimping surface to the side surface of the cutter slide rail, the slide rail can be limited to fix the cutter slide rail. The structure and principle are relatively simple and easy to implement.

[0017] In some embodiments of this application, the first pressing surface and the second pressing surface are set at a first angle, and the top surface and the side surface are set at a second angle, wherein the first angle and the second angle are the same and not less than 90°.

[0018] The top and side surfaces of the cutter slide rail are set at a second angle of not less than 90°, meaning the cutter slide rail is rectangular or trapezoidal. The first and second pressing surfaces are set at a first angle that is the same as the second angle, so that the shape of the pressing part matches the shape of the cutter slide rail, which helps to improve the stability when pressing the cutter slide rail.

[0019] In some embodiments of this application, the bracket body is provided with a first positioning hole and a second positioning hole at both ends along the first direction, and the first positioning hole and the second positioning hole are respectively used for the first fixing member and the second fixing member to pass through and fix the fixed bracket.

[0020] By setting a first fixing hole and a second fixing hole at both ends of the bracket body along the first direction, the bracket body can be assembled and fixed by using the first fixing member and the second fixing member to pass through the first fixing hole and the second fixing hole respectively, which helps to improve the assembly efficiency of the bracket body.

[0021] In some embodiments of this application, the support body is provided with a first protrusion and a second protrusion at both ends along the first direction, the first protrusion and the second protrusion are arranged toward the moving cutter, the first protrusion is provided with the first positioning hole, and the second protrusion is provided with the second positioning hole.

[0022] By providing a first boss and a second boss at both ends of the bracket body along the first direction, a first positioning hole and a second positioning hole can be provided on the first boss and the second boss respectively, thereby reducing the risk of cracking when the bracket body is opened with the first positioning hole or the second positioning hole, and facilitating the assembly of the first fastener and the second fastener.

[0023] In some embodiments of this application, the cutter slide rail is provided with at least one connecting hole for a third fixing member to pass through and secure the cutter slide rail.

[0024] By providing at least one connecting hole on the cutter slide rail, the cutter slide rail can be further secured by using a third fastener such as a bolt or screw through the connecting hole, thereby further improving the stability of the cutter slide rail fixation.

[0025] In some embodiments of this application, the cutting device further includes a fixed box with an opening, the cutting slide rail and the fixed bracket being fixedly connected inside the fixed box, and the cutting slider and the transmission member protruding from the opening.

[0026] By securing the cutter slide rail and the fixed bracket within the fixed housing, the stability of the cutter slide rail and the fixed bracket is improved. The fixed housing also provides protection, reducing the risk of accidental contact between the cutter slide rail, the cutter slider, and the fixed bracket. The protruding openings of the cutter slider and transmission components facilitate connection with the moving cutter, reducing the risk of interference with the fixed housing.

[0027] In some embodiments of this application, the transmission component includes a movable cam connected to the cutter slider, the movable cam having a shaft hole extending along a third direction intersecting the first direction, and the movable cutter having a roller inserted into the shaft hole.

[0028] By inserting the roller of the moving cutter into the shaft hole of the moving cam, the shaft hole is a hole that extends at an angle relative to the first direction. When the cutter slider moves back and forth relative to the cutter slide rail, it can drive the moving cam to move along the first direction. In this way, the roller can drive the moving cutter to move back and forth along the second direction, thereby enabling the cutting of the electrode sheet in cooperation with the moving cutter.

[0029] In some embodiments of this application, the surfaces of the fixed bracket and the cutter slide rail are provided with anti-corrosion coatings.

[0030] The anti-corrosion coating provides protection and helps extend the service life of the mounting bracket and cutter slide.

[0031] Secondly, this application provides a battery production line, including a cutting device as described in any one of the embodiments of the first aspect, the cutting device being used to cut electrode sheets.

[0032] The battery production line provided in this application includes the cutting device described in any one of the first aspects of the embodiments, and therefore has the technical effects of any of the above embodiments, which will not be repeated here.

[0033] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0035] Figure 1 A schematic diagram of the cutting device in a first state according to some embodiments of this application;

[0036] Figure 2 A schematic diagram of the cutting device in a second state according to some embodiments of this application;

[0037] Figure 3 This is a schematic diagram of the structure of the fixed bracket provided in some embodiments of this application.

[0038] The attached figures are labeled as follows:

[0039] 100. Cutting device;

[0040] 10. Fixed cutter; 20. Moving cutter; 21. Roller; 30. Drive mechanism; 31. Cutter slide rail; 32. Cutter slider; 33. Transmission component; 331. Shaft hole; 40. Fixed bracket; 41. Bracket body; 42. Fixing body; 421. First pressing surface; 422. Second pressing surface; 43. First boss; 431. First positioning hole; 44. Second boss; 441. Second positioning hole. Detailed Implementation

[0041] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0044] In this document, the term "embodiment" means that a particular 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 separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments in this application, the term "and / or" 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 document generally indicates that the preceding and following related objects have an "or" relationship.

[0046] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0047] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0048] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0049] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0050] The winding process is a crucial part of battery manufacturing. In the winding process, a cutting device is needed to stably cut the electrode sheets. However, when the cutting device becomes loose, it can easily cause abnormal movement of the moving cutter, resulting in a gap after the moving cutter and the fixed cutter close. This can lead to abnormal electrode sheet cutting and quality problems such as burrs and excess material.

[0051] To address the problem of burrs and uneven cutting caused by the loosening of the cutting device leading to abnormal movement of the moving cutter during electrode cutting, this application designs a cutting device including a fixed cutter, a moving cutter, a drive mechanism, and a fixed bracket. Both the fixed and moving cutters extend along a first direction; the moving cutter is located on one side of the fixed cutter along a second direction, perpendicular to the first direction. The drive mechanism includes a cutter slide rail, a cutter slider, and a transmission component. The cutter slider is slidably connected to the cutter slide rail and is driven by the transmission component to the moving cutter. The cutter slider is configured to move the moving cutter closer to or away from the fixed cutter when sliding relative to the cutter slide rail. The fixed bracket has a pressing part that presses against the cutter slide rail to fix it. This technical solution improves the stability of the cutting device's installation and fixation, thereby improving the stability of the moving cutter's movement and ultimately enhancing the cutting quality of the workpiece.

[0052] The cutting device disclosed in this application is used in battery production lines, including but not limited to cutting materials such as positive electrode sheets, negative electrode sheets, or separators of electrode components. The cutting device provided in this application helps to improve the cutting quality of electrode sheets.

[0053] Please see Figures 1 to 3 , Figure 1 A schematic diagram of the cutting device in a first state according to some embodiments of this application; Figure 2 A schematic diagram of the cutting device in a second state according to some embodiments of this application; Figure 3 This is a schematic diagram of the structure of a fixed bracket provided in some embodiments of this application. Embodiments of this application provide a cutting device 100, including a fixed cutting blade 10, a movable cutting blade 20, a drive mechanism 30, and a fixed bracket 40. Both the fixed cutting blade 10 and the movable cutting blade 20 extend along a first direction; the movable cutting blade 20 is disposed on one side of the fixed cutting blade 10 along a second direction, which is perpendicular to the first direction; the drive mechanism 30 includes a cutting blade slide rail 31, a cutting blade slider 32, and a transmission member 33. The cutting blade slider 32 is slidably connected to the cutting blade slide rail 31 and is drively connected to the movable cutting blade 20 through the transmission member 33. The cutting blade slider 32 is configured to drive the movable cutting blade 20 to move closer to or further away from the fixed cutting blade 10 when sliding relative to the cutting blade slide rail 31. The fixed bracket 40 has a pressing part that presses against the cutting blade slide rail 31 to fix the cutting blade.

[0054] Understandably, the fixed cutter 10 is a stationary cutting component. The fixed cutter 10 may have a cutting edge on the side facing the movable cutter 20. The movable cutter 20 is a cutting component that can move linearly, and it may also have a cutting edge on the side facing the fixed cutter 10.

[0055] The cutter slide rail 31 and the cutter slider 32 are slidably connected, wherein the cutter slide rail 31 also extends along the first direction. The cutter slider 32 can slide back and forth relative to the cutter slide rail 31 along the first direction.

[0056] Understandably, the cutter slider 32 is connected to the transmission component 33, and the moving cutter 20 is connected to the transmission component 33. When the cutter slider 32 moves back and forth relative to the cutter slide rail 31, it can drive the moving cutter 20 to move in the second direction through the transmission component 33.

[0057] For example, the fixing bracket 40 is a fastener in this application. The fixing bracket 40 can be pressed onto the cutter slide rail 31 or fixedly connected to the cutter slide rail 31 to fix the cutter slide rail.

[0058] According to the cutting device 100 provided in this application, by providing a fixed bracket 40 with a pressing part, the pressing part of the fixed bracket 40 can press against the cutting slide rail 31 to fix the cutting slide rail, thereby improving the stability of the installation and fixing of the cutting slide rail 31, thereby improving the stability of the cutting slider 32 moving relative to the cutting slide rail 31 to drive the transmission member 33 and the moving cutting blade 20 to move, thereby reducing the gap generated when the moving cutting blade 20 and the fixed cutting blade 10 cooperate to cut the workpiece, and thus improving the cutting quality of the workpiece.

[0059] According to some embodiments of this application, the fixed bracket 40 includes: a bracket body 41, which is disposed on the side of the cutter slide rail 31 away from the movable cutter 20 along a second direction and extends along a first direction; at least one fixing body 42, one end of which is connected to the bracket body 41 and the other end extends along the second direction to the top surface of the cutter slide rail 31; wherein the fixing body 42 is provided with a pressing part.

[0060] For example, the bracket body 41 and the fixing body 42 may be made of stainless steel.

[0061] By providing at least one fixing body 42 on one side of the support body 41, and extending to the top surface of the cutter slide rail 31 and pressing it onto the cutter slide rail 31 through the crimping part, the cutter slide rail can be fixed, thereby reducing the risk of the cutter slide rail 31 shaking.

[0062] According to some embodiments of this application, there are two fixing bodies 42, which are spaced apart along a first direction, and a space is defined between the two fixing bodies 42 to allow for the movement stroke of the cutter slider 32 and the transmission member 33.

[0063] By setting the number of fixing bodies 42 to two, the number of cutter slide rails 31 is increased, thereby further improving the stability of fixing the cutter slide rails 31. Furthermore, by arranging the two cutter slide rails 31 at intervals along the first direction, the travel distance of the cutter slider 32 and the transmission member 33 can be limited, thereby limiting the travel distance between the moving cutter 20 and the fixed cutter 10, reducing the risk of abnormalities and damage during electrode cutting caused by excessive movement distance between the moving cutter 20 and the fixed cutter 10.

[0064] According to some embodiments of this application, the fixing body 42 is provided with a pressing part on the side facing the cutter slide rail 31, and the pressing part is pressed onto the cutter slide rail 31.

[0065] For example, the crimping portion can be a groove or a recessed stepped structure.

[0066] By providing a crimping part on the side of the fixing body 42 facing the cutter slide rail 31, the crimping part is directly pressed onto the cutter slide rail 31 to fix the cutter slide rail. This eliminates the need for additional accessories, helps improve assembly efficiency, and reduces costs.

[0067] According to some embodiments of this application, the crimping portion includes a recess, the recess having a first crimping surface 421 and a second crimping surface 422, the first crimping surface 421 and the second crimping surface 422 being connected; wherein, the first crimping surface 421 abuts against the top surface of the cutter slide rail 31, and the second crimping surface 422 abuts against one side surface of the cutter slide rail 31, the side surface being connected to the top surface.

[0068] Understandably, the recess can be a stepped structure formed by a partial depression of the fixed body 42 on the side facing the cutter slide rail 31.

[0069] The crimping part has a first crimping surface 421 and a second crimping surface 422. The first crimping surface 421 and the second crimping surface 422 are partially recessed on the side of the fixing body 42 facing the cutter slide rail 31. By crimping the first crimping surface 421 onto the top surface of the cutter slide rail 31 and the second crimping surface 422 onto the side surface of the cutter slide rail 31, the first crimping surface 421 can be crimped onto the side surface of the cutter slide rail 31, thereby limiting the slide rail and fixing the cutter slide rail. The structure and principle are relatively simple and easy to implement.

[0070] According to some embodiments of this application, the first pressing surface 421 and the second pressing surface 422 are set at a first angle, and the top surface and the side surface are set at a second angle, wherein the first angle and the second angle are the same and not less than 90°.

[0071] The top surface and side surface of the cutter slide rail 31 are set at a second angle of not less than 90°, that is, the cutter slide rail 31 is rectangular or trapezoidal. The first pressing surface 421 and the second pressing surface 422 are set at a first angle of the same as the second angle, so that the shape of the pressing part is adapted to the shape of the cutter slide rail 31, which helps to improve the stability when pressing the cutter slide rail 31.

[0072] According to some embodiments of this application, the bracket body 41 is provided with a first positioning hole 431 and a second positioning hole 441 at both ends along the first direction. The first positioning hole 431 and the second positioning hole 441 are respectively used for the first fixing member and the second fixing member to pass through and fix the bracket 40.

[0073] For example, the first positioning hole 431 and the second positioning hole 441 can be threaded holes, and the first fixing member and the second fixing member can be studs.

[0074] By providing a first fixing hole and a second fixing hole at both ends of the bracket body 41 along the first direction, the bracket body 41 can be assembled and fixed by using the first fixing member and the second fixing member to pass through the first fixing hole and the second fixing hole respectively, which helps to improve the assembly efficiency of the bracket body 41.

[0075] According to some embodiments of this application, the bracket body 41 is provided with a first boss 43 and a second boss 44 at both ends along the first direction. The first boss 43 and the second boss 44 are arranged toward the moving cutter 20. The first boss 43 is provided with a first positioning hole 431 and the second boss 44 is provided with a second positioning hole 441.

[0076] Understandably, the first boss 43 and the second boss 44 are located on both sides of at least one fixed body 42 along the first direction to reduce the risk of interference with the drive mechanism 30.

[0077] By providing a first boss 43 and a second boss 44 at both ends of the bracket body 41 along the first direction, a first positioning hole 431 and a second positioning hole 441 are respectively provided on the first boss 43 and the second boss 44, reducing the risk of cracking when the bracket body 41 is opened with the first positioning hole 431 or the second positioning hole 441, and facilitating the assembly of the first fastener and the second fastener.

[0078] For example, the dimension of the support body 41 along the second direction is set in the range of 5mm-8mm. The dimension of the first boss 43 and the second boss 44 along the second direction is set in the range of 15mm-18mm. This not only ensures the strength of the support body 41, but also reduces the space occupied by the support body 41 along the second direction.

[0079] According to some embodiments of this application, the cutter slide rail 31 is provided with at least one connecting hole for a third fastener to pass through and secure the cutter slide rail 31.

[0080] By providing at least one connecting hole on the cutter slide rail 31, the cutter slide rail 31 can be further fixed by using a third fastener such as a bolt or screw through the connecting hole, thereby further improving the stability of the cutter slide rail 31.

[0081] According to some embodiments of this application, the cutter device 100 further includes a fixed box (not shown in the figure), the fixed box has an opening, the cutter slide rail 31 and the fixed bracket 40 are fixedly connected in the fixed box, and the cutter slider and the transmission component protrude out of the opening.

[0082] By fixing the cutter slide rail 31 and the fixed bracket 40 inside the fixed box, the stability of the cutter slide rail 31 and the fixed bracket 40 is improved, and the fixed box also provides protection, helping to reduce the risk of accidental contact between the cutter slide rail 31, the cutter slider 32, and the fixed bracket 40. The cutter slider 32 and the transmission component 33 protrude from the opening, which facilitates the transmission connection with the moving cutter 20 and reduces the risk of interference with the fixed box.

[0083] According to some embodiments of this application, the transmission member 33 includes a movable cam connected to the cutter slider 32. The movable cam has a shaft hole 331, which extends along a third direction intersecting the first direction. The movable cutter 20 has a roller 21, which is inserted into the shaft hole 331.

[0084] By inserting the roller 21 of the movable cutter 20 into the shaft hole 331 of the movable cam, the shaft hole 331 is a hole that extends at an angle relative to the first direction. When the cutter slider 32 moves back and forth relative to the cutter slide rail 31, it can drive the movable cam to move along the first direction. Thus, the roller 21 can drive the movable cutter 20 to move back and forth along the second direction, thereby enabling the cutting of the electrode sheet in cooperation with the movable cutter 20.

[0085] According to some embodiments of this application, the surfaces of the fixed bracket 40 and the cutter slide rail 31 are provided with anti-corrosion coatings.

[0086] The anti-corrosion coating provides protection and helps extend the service life of the fixed bracket 40 and the cutter slide rail 31.

[0087] According to some embodiments of this application, see Figures 1 to 3This application provides a cutting device 100, including a fixed cutting blade 10, a movable cutting blade 20, a drive mechanism 30, and a fixed bracket 40. Both the fixed cutting blade 10 and the movable cutting blade 20 extend along a first direction; the movable cutting blade 20 is disposed on one side of the fixed cutting blade 10 along a second direction, which is perpendicular to the first direction; the drive mechanism 30 includes a cutting blade slide rail 31, a cutting blade slider 32, and a transmission member 33. The cutting blade slider 32 is slidably connected to the cutting blade slide rail 31 and is drively connected to the movable cutting blade 20 via the transmission member 33. The cutting blade slider 32 is configured to drive the movable cutting blade 20 to move closer to or further away from the fixed cutting blade 10 when sliding relative to the cutting blade slide rail 31. The fixed bracket 40 has at least one fixing body 42 extending to the top side of the cutting blade slide rail 31. The fixing body 42 has a pressing portion that presses against the cutting blade slide rail 31 to fix the cutting blade slide rail. The technical solution of this application can improve the stability of the installation and fixing of the cutting device 100, thereby improving the stability of the movement of the moving cutting blade 20 and thus improving the cutting quality of the electrode sheet.

[0088] According to some embodiments of this application, this application also provides a battery production line, including a cutting device 100 of any of the first aspect embodiments, the cutting device 100 being used to cut electrode sheets.

[0089] The battery production line provided in this application includes the cutting device 100 of any of the first aspect embodiments, and therefore has the technical effects of any of the above embodiments, which will not be repeated here.

[0090] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cutting device, characterized in that, include: A fixed cutting blade extends along the first direction; A movable cutter extends along the first direction and is disposed on one side of the fixed cutter along the second direction, the second direction being perpendicular to the first direction; The driving mechanism includes a cutter slide rail, a cutter slider, and a transmission component. The cutter slider is slidably connected to the cutter slide rail, and the cutter slider is driven to the moving cutter through the transmission component. The cutter slider is configured to drive the moving cutter to move closer to or further away from the fixed cutter when sliding relative to the cutter slide rail. A fixed bracket is provided, wherein the fixed bracket is provided with a crimping part, and the crimping part is crimped and connected to the cutter slide rail.

2. The cutting device according to claim 1, characterized in that, The fixing bracket includes: The support body, along the second direction, is located on the side of the cutter slide rail opposite to the movable cutter, and extends along the first direction; At least one fixing body, one end of which is connected to the support body and the other end extends along the second direction to the top surface of the cutter slide rail; The fixing body is provided with the pressing part.

3. The cutting device according to claim 2, characterized in that, The number of fixed bodies is two, and the two fixed bodies are spaced apart along the first direction, and a space is reserved between the two fixed bodies for the movement stroke of the cutter slider and the transmission component.

4. The cutting device according to claim 2, characterized in that, The crimping portion includes a recess, the recess having a first crimping surface and a second crimping surface, the first crimping surface and the second crimping surface being connected; The first pressing surface abuts against the top surface of the cutter slide rail, and the second pressing surface abuts against one side surface of the cutter slide rail, the side surface being connected to the top surface.

5. The cutting device according to claim 4, characterized in that, The first pressing surface and the second pressing surface are set at a first angle, and the top surface and the side surface are set at a second angle. The first angle and the second angle are the same and not less than 90°.

6. The cutting device according to any one of claims 2-5, characterized in that, The bracket body is provided with a first positioning hole and a second positioning hole at both ends along the first direction. The first positioning hole and the second positioning hole are respectively used for the first fixing member and the second fixing member to pass through and fix the fixed bracket.

7. The cutting device according to claim 6, characterized in that, The support body is provided with a first protrusion and a second protrusion at both ends along the first direction. The first protrusion and the second protrusion are arranged toward the moving cutter. The first protrusion is provided with the first positioning hole, and the second protrusion is provided with the second positioning hole.

8. The cutting device according to any one of claims 1-5, characterized in that, The cutter slide rail is provided with at least one connecting hole, which is used for a third fastener to pass through and fix the cutter slide rail.

9. The cutting device according to any one of claims 1-5, characterized in that, The cutting device also includes a fixed box with an opening. The cutting slide rail and the fixed bracket are fixedly connected inside the fixed box, and the cutting slider and the transmission component protrude from the opening.

10. The cutting device according to any one of claims 1-5, characterized in that, The transmission component includes a movable cam connected to the cutter slider. The movable cam has a shaft hole that extends along a third direction intersecting the first direction. The movable cutter has a roller that is inserted into the shaft hole.

11. The cutting device according to any one of claims 1-5, characterized in that, The surfaces of the fixed bracket and the cutter slide rail are provided with anti-corrosion coatings.

12. A battery production line, characterized in that, The device includes the cutting device according to any one of claims 1-11, the cutting device being used to cut the electrode sheet.

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