Diaphragm cutting mechanism and battery cell winding machine

Abstract

The utility model provides a diaphragm cutting mechanism and a battery cell winding machine, and relates to the technical field of winding equipment. A mode of comprising a pressing plate, a cutting assembly and a driving assembly is adopted, the pressing plate is used for fixing a to-be-cut diaphragm, in the using process, the to-be-cut assembly moves towards the pressing plate and the to-be-cut diaphragm under the action of the driving assembly and cuts the to-be-cut diaphragm, meanwhile, a cutter, a controller and a heating pipe synchronously move through a plate body assembly, and therefore the to-be-cut diaphragm is cut. The technical problem that in the prior art, in the moving process of the cutter, the cable is prone to damage is solved, and the technical effect of improving the reliability of equipment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core winding equipment, in particular to a diaphragm cutting mechanism and a battery core winding machine. Background Art

[0002] Battery core winding is a manufacturing process of winding anode, diaphragm and cathode layers in a certain way to form a battery core, and its purpose is to ensure that each lithium ion has a corresponding carbon ion to combine with. Therefore, the quality of the battery core winding process directly affects the quality and service life of lithium batteries; compared with flat batteries, wound batteries are made by high-pressure winding of plates with a thickness of only about 1 mm, and have the advantages of wide high and low temperature performance, super high-rate discharge ability and strong structure, and excellent seismic resistance.

[0003] When the battery core is being wound, the diaphragm usually needs to be cut by a cutter according to requirements, and during the cutting process, the cutter needs to be heated to improve the cutting quality. Since in the prior art, a remote controller is used to control the heating component on the periphery of the cutter by means of cable connection, the movement of the cutter during the cutting of the diaphragm is likely to damage the cable; there is a hidden danger that the cutter heating function fails during the operation of the equipment. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a diaphragm cutting mechanism and a battery core winding machine to alleviate the technical problem that the cable is easily damaged by the movement of the cutter during the cutting of the diaphragm in the prior art.

[0005] In a first aspect, the utility model provides a diaphragm cutting mechanism, including a cutting component and a driving component, where the driving component is used to drive the cutting component to move towards the diaphragm to be cut and cut the diaphragm to be cut;

[0006] The cutting component includes a cutter, a controller and a heating rod, and the controller heats the cutter through the heating rod;

[0007] The driving component includes a plate body component and a driving member, the controller is installed on the plate body component, the cutter and the heating rod are connected to the plate body component, and the driving member is in transmission connection with the plate body component and is used to drive the plate body component to move towards the diaphragm to be cut, so as to drive the cutter to cut the diaphragm to be cut.

[0008] Combined with the first aspect, the utility model provides a first possible implementation manner of the first aspect, where the plate body component includes a first connecting plate body and a second connecting plate body, and under the control of the driving member, the first connecting plate body drives the second connecting plate body to move towards the diaphragm to be cut;

[0009] The cutter and the heating rod are connected to the side of the second connecting plate body facing the membrane to be cut, the controller is installed on the first connecting plate body, and the controller is electrically connected to the heating rod. In combination with the first possible implementation of the first aspect, the utility model provides a second possible implementation of the first aspect, wherein the cutting assembly further includes a shell and a cutter seat, the shell being elastically connected to the side of the second connecting plate body facing the membrane to be cut;

[0010] The cutter seat is arranged in the shell, and one end of the cutter seat passes through the shell and is fixedly connected to the second connecting plate body.

[0011] In combination with the second possible implementation of the first aspect, the utility model provides a third possible implementation of the first aspect, wherein an opening is provided at the end of the shell facing away from the second connecting plate body, the cutter is installed on the cutter seat, and extends out of the shell from the opening under the push of the driving member, and the heating rod is arranged inside the cutter seat.

[0012] In combination with the third possible implementation of the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein the cutting assembly also includes a sensor, the sensor is arranged on the peripheral side of the cutter, and the controller controls the heating temperature of the cutter by the heating rod according to the temperature data collected by the sensor.

[0013] In combination with the fifth possible implementation of the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein a plurality of air suction holes facing the diaphragm to be cut are provided at the opening of the shell, and a plurality of dust removal pipes are provided at the opening of the shell;

[0014] The plurality of dust removal pipes are connected to the air suction holes, and the air suction holes are used to absorb dust generated when the cutter cuts the diaphragm to be cut.

[0015] In combination with the fifth possible implementation of the first aspect, the utility model provides a sixth possible implementation of the first aspect, wherein the shell is slidably connected to the second connecting plate body via a guide shaft, and a spring is disposed on the outer sleeve of the guide shaft.

[0016] In combination with the sixth possible implementation of the first aspect, the utility model provides a seventh possible implementation of the first aspect, wherein the drive assembly also includes a support plate body, the support plate body is provided with a plurality of sliding rails, and the first connecting plate body is slidably connected to the support plate body through the plurality of sliding rails.

[0017] Combined with the sixth possible implementation manner of the first aspect, the present utility model provides an eighth possible implementation manner of the first aspect, wherein, a pressing plate is further included, the pressing plate and the housing are respectively disposed on two sides of the diaphragm to be cut, the opposite surfaces of the pressing plate and the housing are flat surfaces, and a plurality of adsorption holes are provided on the surface of the pressing plate facing the housing.

[0018] In a second aspect, the present utility model further provides a battery core winding machine, including the diaphragm cutting mechanism described above.

[0019] The embodiments of the present utility model bring the following beneficial effects: In order to reduce the hidden danger of damage to the cable connecting the controller and the heating rod during the movement of the cutting tool, the controller, the heating rod and the cutting tool are all installed on the plate body assembly, and the controller, the heating rod and the cutting tool move synchronously with the plate body assembly, reducing the stretching of the cable during the movement of the cutting tool and reducing the risk of cable damage, achieving the technical effect of improving the reliability of equipment use. Description of the Drawings

[0020] In order to more clearly illustrate the specific implementation manners of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific implementation manners or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of the diaphragm cutting mechanism provided by the embodiment of the present utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the cutting assembly in the diaphragm cutting mechanism provided by the embodiment of the present utility model;

[0023] Figure 3 It is a front view of the diaphragm cutting mechanism provided by the embodiment of the present utility model;

[0024] Figure 4 It is an internal structure diagram of the housing in the diaphragm cutting mechanism provided by the embodiment of the present utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the pressing plate provided by the embodiment of the present utility model.

[0026] Reference numerals: 10 - pressing plate; 11 - adsorption hole; 12 - cutting tool avoidance groove; 20 - diaphragm to be cut; 30 - discharge pipe;

[0027] 100 - Cutting assembly; 110 - Cutter; 120 - Dust removal pipe; 130 - Housing; 131 - Opening; 140 - Spring; 150 - Controller; 160 - Heating rod; 170 - Sensor; 180 - Cutter seat; 190 - Guide shaft;

[0028] 200 - Driving assembly; 210 - First connecting plate body; 220 - Second connecting plate body; 230 - Driving member; 240 - Lead screw; 250 - Support plate body; 251 - Slide rail. Detailed implementation manner

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] As Figure 1 - Figure 5 shown, a diaphragm cutting mechanism provided by the present utility model includes a cutting assembly 100 and a driving assembly 200. The driving assembly 200 is used to drive the cutting assembly 100 to move towards the diaphragm 20 to be cut and cut the diaphragm 20 to be cut;

[0033] The cutting assembly 100 includes a cutter 110, a controller 150 and a heating rod 160. The controller 150 heats the cutter 110 through the heating rod 160;

[0034] The driving component 200 includes a plate body component and a driving member 230. The controller 150 is installed on the plate body component. The cutting knife 110 and the heating rod 160 are connected to the plate body component. The driving member 230 is in transmission connection with the plate body component and is used to drive the plate body component towards the diaphragm 20 to be cut, so as to drive the cutting knife 110 to cut the diaphragm 20 to be cut.

[0035] During the use process, under the action of the driving component 200, the cutting component 100 moves towards the diaphragm 20 to be cut and cuts the diaphragm 20 to be cut. In order to reduce the hidden danger of damage to the cable connecting the controller 150 and the heating rod 160 during the movement of the cutting knife 110, the controller 150, the heating rod 160 and the cutting knife 110 are all installed on the plate body component, and the controller 150, the heating rod 160 and the cutting knife 110 move synchronously with the plate body component, reducing the stretching of the required cable during the movement of the cutting knife 110 and reducing the risk of cable damage, achieving the technical effect of improving the reliability of equipment use.

[0036] Furthermore, the plate body component includes a first connecting plate body 210 and a second connecting plate body 220. In this embodiment, the driving member 230 can be selected as a motor, and the slider of the lead screw 240 is connected to the first connecting plate body 210. One end of the first connecting plate body 210 is connected to the slider, and the other end of the first connecting plate body 210 is connected to the second connecting plate body 220. In this embodiment, the second connecting plate body 220 is perpendicular to the first connecting plate body. Under the control of the driving member 230, the lead screw 240 drives the second connecting plate body 220 to move towards the diaphragm 20 to be cut through the first connecting plate body 210.

[0037] Furthermore, the installation methods of the cutting knife 110, the heating rod 160 and the controller 150 are as follows:

[0038] The cutting knife 110 and the heating rod 160 are connected to the side of the second connecting plate body 220 facing the diaphragm 20 to be cut. The controller 150 is installed on the first connecting plate body 210. The controller 150 is electrically connected to the heating rod 160. With such a setting, it can ensure that during the cutting process of the cutting knife 110, the heating rod 160 can provide stable heat control. At the same time, the controller 150 is set on the first connecting plate body 210 and has a certain distance from the cutting part, which is convenient for manual operation of the controller 150. Since one end of the first connecting plate body 210 and the second connecting plate body 220 are fixedly connected, it can ensure the synchronous movement of the first connecting plate body 210 and the second connecting plate body 220. Therefore, the cable between the controller 150 and the heating rod 160 will not be stretched when the cutting knife 110 cuts.

[0039] Further, the cutting assembly 100 further includes a housing 130 and a cutter holder 180. The housing 130 is elastically connected to the end of the second connecting plate body 220 facing the diaphragm 20 to be cut;

[0040] The cutter holder 180 is disposed inside the housing 130, and one end of the cutter holder 180 penetrates through the housing 130 and is fixedly connected to the second connecting plate body 220.

[0041] Further, an opening 131 is provided at the end of the housing 130 facing away from the second connecting plate body 220. The cutter 110 is installed on the cutter holder 180 and extends out of the housing 130 from the opening 131 under the push of the driving member 230. The heating rod 160 is disposed inside the cutter holder.

[0042] When the second connecting plate body 220 drives the housing 130 to move into contact with the diaphragm 20 to be cut, under the continuous propulsion of the driving member 230 and the elastic connection between the housing 130 and the second connecting plate body 220, the driving force of the second connecting plate body 220 on the housing 130 is converted into the contraction force of the elastic connection, that is, the housing 130 remains in contact with the diaphragm 20 to be cut. And since one end of the cutter holder 180 penetrates through the housing 130 and is fixedly connected to the second connecting plate body 220, therefore, under the continuous push of the second connecting plate body 220, it extends out through the opening 131 provided at the end of the housing 130 facing away from the second connecting plate body 220 to cut the diaphragm 20 to be cut.

[0043] Further, the housing 130 is slidably connected to the second connecting plate body 220 through a guide shaft 190, and a spring 140 is sleeved outside the guide shaft 190.

[0044] In this embodiment, the guide shaft 190 can be used to guide the movement between the second connecting plate body 220 and the housing 130, and the spring 140 is used to reset the housing 130. When the diaphragm 20 to be cut is not cut, the cutter 110 is hidden in the housing 130. Further, through holes are provided on the side wall of the housing 130. The heating rod 160 is disposed inside the cutter holder 180 and extends out of the housing 130 through the through holes.

[0045] Further, through holes are provided on the side wall of the housing 130. The heating rod is disposed inside the cutter holder 180 and extends out of the housing 130 through the through holes.

[0046] When the designers design the through holes, the transverse distance of the through holes should be greater than the moving distance of the heating rod 160 along the cutter 110; the heating rod 160 passes through the through holes and is inside the cutter holder 180. The cutter holder 180 is made of a high thermal conductivity material, and the heating rod 160 heats the cutter 110 through the cutter holder 180.

[0047] Further, a sensor 170 is also provided inside the housing 130. The sensor 170 is used to detect the temperature of the cutting blade 110, and the controller 150 controls the heating temperature of the heating rod 160 for the cutting blade 110 according to the temperature data collected by the sensor 170.

[0048] The sensor 170 is electrically connected to the controller 150. The sensor 170 is installed on the cutter holder 180 and moves synchronously with the controller 150 without relative movement, which also reduces the risk of cable damage. The controller 150 can be controlled by a single-chip microcomputer. The controller 150 controls the heating temperature of the heating rod 160 for the cutting blade 110 according to the temperature information of the cutting blade 110 detected by the sensor 170, thereby improving the cutting quality of the diaphragm 20 to be cut.

[0049] Further, a plurality of suction holes facing the diaphragm 20 to be cut are provided at the opening 131 of the housing 130. A plurality of dust removal pipes 120 are provided at the opening 131 of the housing 130. The plurality of dust removal pipes 120 are communicated with the suction holes. The suction holes are used to adsorb the dust generated when the cutting blade 110 cuts the diaphragm 20 to be cut.

[0050] Further, the plurality of suction holes are distributed in two rows on both sides of the opening 131.

[0051] Since the cutting blade 110 extends out from the opening 131 and the dust suction holes are distributed on the upper and lower sides of the cutting blade 110, the dust generated during the cutting process is adsorbed from multiple angles, effectively preventing dust escape.

[0052] Further, the driving assembly 200 further includes a support plate body 250. The support plate body 250 is provided with a plurality of slide rails 251. The first connecting plate body 210 is slidably connected to the support plate body 250 through the plurality of slide rails 251.

[0053] To ensure the connection stability of the first connecting plate body 210, in this embodiment, a support plate body 250 is provided on the side of the first connecting plate body 210. The support plate body 250 is provided with a plurality of slide rails 251. The slide rails 251 extend along the cutting direction of the cutting blade 110. The first connecting plate body 210 is slidably connected to the support plate body 250 through the plurality of slide rails 251. The bottom of the first connecting plate body 210 is connected to the slider of the lead screw 240. The other side surface of the first connecting plate body 210 is connected to the support plate body 250 through the slide rail 251, that is, the connection stability of the first connecting plate body 210 can be maintained, and at the same time, its sliding effect is not affected.

[0054] Further, a discharge pipe 30 is further included. The discharge pipe 30 is respectively communicated with the ends of the plurality of dust removal pipes 120. The discharge pipe 30 is used for discharging dust.

[0055] The arrangement of the discharge pipe 30 can effectively discharge the dust adsorbed by the dust removal pipe 120 into the recovery area. In this embodiment, the discharge pipe 30 has a single pipe body structure, and one end of the discharge pipe 30 is arranged in the same horizontal direction as the plurality of dust removal pipes 120, which is convenient for later maintenance.

[0056] Furthermore, as Figure 5 shown, it further includes a pressing plate 10. The pressing plate 10 and the housing 130 are respectively arranged on both sides of the diaphragm 20 to be cut. The opposite surfaces of the pressing plate 10 and the housing 130 are flat surfaces. A plurality of adsorption holes 11 are arranged on the surface of the pressing plate 10 facing the housing 130.

[0057] A cutter avoidance groove 12 is arranged on the surface of the pressing plate 10 facing the housing 130, which is convenient for the cutter 110 to extend into the cutter avoidance groove 12 to cut the diaphragm 20 to be cut. The plurality of adsorption holes 11 are arranged in two rows on both sides of the cutter avoidance groove 12.

[0058] The arrangement of the pressing plate 10 can clamp the diaphragm 20 to be cut from both sides when the housing 130 approaches the diaphragm 20 to be cut, and press the diaphragm 20 to be cut when the cutter 110 cuts the diaphragm 20 to be cut, improving the cutting effect; at the same time, when the housing 130 approaches the diaphragm 20 to be cut, a thrust is provided for the housing 130, which is convenient for the cutter 110 to extend out of the opening 131.

[0059] A plurality of adsorption holes 11 are arranged on the surface of the pressing plate 10 facing the housing 130. The pressing plate 10 is externally connected to a negative pressure device, which is convenient for the adsorption holes 11 to adsorb the diaphragm 20 to be cut, avoiding the diaphragm 20 to move around, and avoiding the situation that after the cutter 110 cuts the diaphragm 20 to be cut, the retraction of the cutter 110 drives the cut diaphragm to swing with the movement of the cutter 110. The plurality of adsorption holes 11 are arranged in two rows on both sides of the cutter avoidance groove 12, which is convenient for adsorbing the two end parts formed after the diaphragm is cut.

[0060] In the second aspect, this embodiment also provides a battery core winding machine, including the diaphragm cutting mechanism described above, the principle of which has been described above and will not be elaborated here.

[0061] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A diaphragm cutting mechanism, characterized in that, It comprises a cutting assembly (100) and a driving assembly (200), wherein the driving assembly (200) is used to drive the cutting assembly (100) to move toward a diaphragm (20) to be cut and cut the diaphragm (20) to be cut; The cutting assembly (100) comprises a cutting blade (110), a controller (150) and a heating rod (160), wherein the heating rod (160) is used to heat the cutting blade (110), and the controller (150) is electrically connected to the heating rod (160); The driving assembly (200) comprises a plate assembly and a driving member (230), the controller (150) is installed on the plate assembly, the cutter (110) and the heating rod (160) are connected to the plate assembly, and the driving member (230) is transmission-connected to the plate assembly for driving the plate assembly to move toward the diaphragm (20) to be cut, so as to drive the cutter (110) to cut the diaphragm (20) to be cut.

2. The diaphragm cutting mechanism according to claim 1, wherein The plate assembly comprises a first connecting plate (210) and a second connecting plate (220); under the control of the driving member (230), the first connecting plate (210) drives the second connecting plate (220) to move toward the diaphragm (20) to be cut; The cutting knife (110) and the heating rod (160) are connected to the second connecting plate (220) on the side facing the diaphragm (20) to be cut, and the controller (150) is installed on the first connecting plate (210), and the controller (150) is electrically connected to the heating rod (160).

3. The diaphragm cutting mechanism according to claim 2, wherein, The cutting assembly (100) further comprises a housing (130) and a cutter seat (180), wherein the housing (130) is elastically connected to a side of the second connecting plate (220) facing the diaphragm (20) to be cut; The cutter seat (180) is disposed in the housing (130), and one end of the cutter seat (180) passes through the housing (130) and is fixedly connected to the second connecting plate body (220).

4. The diaphragm cutting mechanism according to claim 3, characterized in that, An opening (131) is provided at the end of the shell (130) facing away from the second connecting plate body (220); the cutter (110) is installed on the cutter seat (180), and the cutter (110) extends out of the shell (130) from the opening (131) under the push of a driving member (230); and the heating rod (160) is arranged inside the cutter seat (180).

5. The diaphragm cutting mechanism according to claim 4, characterized in that, The cutting assembly (100) further comprises a sensor (170), wherein the sensor (170) is arranged on the peripheral side of the cutter (110), and the controller (150) is electrically connected to the sensor (170), wherein the sensor (170) is used to detect the temperature of the cutter (110), and the controller (150) controls the heating power of the heating rod (160) according to the temperature of the cutter (110) detected by the sensor (170).

6. The diaphragm cutting mechanism according to claim 4, wherein, A plurality of suction holes facing the diaphragm (20) to be cut are provided at the opening (131) of the housing (130), and a plurality of dust removal pipes (120) are provided at the opening (131) of the housing (130). The plurality of dust removal pipes (120) are respectively communicated with the suction holes, and the suction holes are used for adsorbing dust generated when the cutting knife (110) cuts the diaphragm (20) to be cut.

7. The diaphragm cutting mechanism according to claim 4, characterized in that, The housing (130) is slidably connected to the second connecting plate body (220) through a guide shaft (190), and a spring (140) is sleeved outside the guide shaft.

8. The diaphragm cutting mechanism according to claim 3, wherein, The driving assembly (200) further includes a support plate body (250), the support plate body (250) is provided with a plurality of slide rails (251), and the first connecting plate body (210) is slidably connected to the support plate body (250) through the plurality of slide rails (251).

9. The diaphragm cutting mechanism according to claim 3, characterized in that, It further includes a pressing plate (10), the pressing plate (10) and the housing (130) are respectively arranged on both sides of the diaphragm (20) to be cut, the opposite surfaces of the pressing plate (10) and the housing (130) are flat surfaces, and a plurality of adsorption holes (11) are provided on the surface of the pressing plate (10) facing the housing (130).

10. A battery cell winding machine, characterized in that, It includes the diaphragm cutting mechanism according to any one of claims 1-9.

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