Rubbing mechanism and rubbing device

Abstract

The utility model relates to a kneading mechanism and a kneading device. The kneading mechanism comprises a rotating disc; the transmission wheel is rotatably arranged on one side of the rotating disc; the plurality of rubbing heads are arranged on one side, facing or backing on to the transmission wheel, of the rotating disc and are circumferentially distributed, each rubbing head is provided with a shaft part, a rubbing part and a transmission tooth part, the rubbing part is mounted at one end of the shaft part, the transmission tooth part is arranged outside the shaft part in a sleeving manner and is meshed with the transmission wheel, and the other end, far away from the rubbing part, of the shaft part is rotationally matched with the rotating disc; all the rubbing and flattening heads synchronously revolve when the rotating disc rotates, and when at least one rubbing and flattening head rotates by means of friction force formed between the rubbing and flattening head and a battery cell, the transmission wheel is driven to rotate, so that the other rubbing and flattening heads are synchronously driven to rotate; and the rotation axis of the rotating disc, the rotation axis of the transmission wheel and the revolution axis of the rubbing and flattening head are collinear. According to the kneading mechanism and the kneading device, the kneading quality can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production equipment, and in particular to a flattening mechanism and a flattening device. Background Art

[0002] In the production process of cylindrical battery cells, it is necessary to flatten the two end faces of the battery cells to make them flat, so as to ensure the welding quality during the subsequent welding of the collector plate. In the related art, the flattening mechanism has a rotating disk and multiple flattening heads, all of which revolve synchronously under the action of the rotating disk, and each flattening head independently rotates under the action of the friction force formed between each flattening head and the end face of the battery cell, so as to repeatedly act on the end face of the battery cell and flatten the end face of the battery cell.

[0003] However, different flattening heads may have different loads and different contact areas with the end faces of the battery cells, resulting in different rotation speeds of the flattening heads, which in turn causes the end faces of the battery cells to be uneven, affecting the flattening quality of the battery cells and even the subsequent welding quality of the battery cells and the collector plates. Utility Model Content

[0004] Based on this, it is necessary to provide a flattening mechanism and a flattening device that can improve the flattening quality in order to solve the above problems.

[0005] A flattening mechanism, the flattening mechanism comprising:

[0006] Rotating disc;

[0007] a transmission wheel, rotatably disposed on one side of the rotating disk; and

[0008] A plurality of flattening heads are arranged on one side of the rotating disk facing toward or away from the transmission wheel and are distributed in a circumference, wherein the flattening heads have a shaft portion, a flattening portion and a transmission tooth portion, wherein the flattening portion is mounted on one end of the shaft portion, the transmission tooth portion is sleeved outside the shaft portion and meshed with the transmission wheel, and the other end of the shaft portion away from the flattening portion is rotationally matched with the rotating disk;

[0009] Wherein, all the kneading heads revolve synchronously when the rotating disk rotates, and when at least one of the kneading heads rotates by means of the friction force formed between the kneading head and the battery core, the transmission wheel is driven to rotate, so as to synchronously drive the other kneading heads to rotate;

[0010] The rotation axis of the rotating disk, the rotation axis of the transmission wheel, and the revolution axis of the smoothing head are collinear.

[0011] In some embodiments, the smoothing head is located on a side of the rotating disk facing the transmission wheel.

[0012] In some embodiments, the transmission tooth portion is indirectly connected to the flattening portion once through the shaft portion, and the transmission tooth portion is directly connected to the flattening portion twice.

[0013] In some embodiments, the transmission wheel is a helical gear.

[0014] In some embodiments, a rotating shaft is further included; the rotating disk and the transmission wheel are arranged at intervals and are both sleeved outside the rotating shaft, the rotating disk is fixedly matched with the rotating shaft, and the transmission wheel is rotationally matched with the rotating shaft.

[0015] In some embodiments, the flattening mechanism further includes a dust suction head, which is disposed on a side of the rotating disk facing the flattening head and has a dust suction channel; at least one dust suction head is disposed between every two adjacent flattening heads.

[0016] In some embodiments, the width of the dust suction port of the dust suction channel gradually increases in a direction away from the rotation axis of the rotating disk.

[0017] In some embodiments, the smoothing head and the dust collector head are both located on the side of the rotating disk facing the transmission wheel; the outer wall of the dust collector head is partially retracted inward in a direction away from the rotation axis of the rotating disk to form a step surface that avoids the transmission wheel.

[0018] In some embodiments, the avoidance step surfaces of all the vacuum heads jointly define a limiting space for limiting the transmission wheel.

[0019] A flattening device, comprising:

[0020] Platform; and

[0021] A flattening mechanism as described in any one of the above items, wherein the flattening mechanism is installed on the platform;

[0022] The clamping claw mechanism is used to clamp the battery core and make the central axis of the battery core and the rotation axis of the rotating disk colinear.

[0023] In the above-mentioned flattening mechanism and flattening device, all the flattening heads are driven by the rotating disk and revolve synchronously when the rotating disk rotates. When at least one flattening head rotates by means of the friction formed between it and the battery cell, the transmission teeth on the rotating flattening head will drive the transmission wheel to rotate, thereby forcing the transmission wheel to synchronously drive the remaining non-rotating flattening heads to rotate, so as to ensure that all the flattening heads can be driven by the transmission wheel to achieve synchronous and uniform rotation at the same rotation speed, thereby overcoming the problem of uneven end faces of the battery cell caused by asynchronous rotation, and having higher flattening quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a flattening mechanism in one embodiment of the present application.

[0025] Figure 2 for Figure 1 The structural schematic diagram of the flattening mechanism shown is after being rotated by a certain angle.

[0026] Figure 3 for Figure 1 The schematic diagram of the structure of a flattening head in the flattening mechanism shown in the figure cooperates with a rotating disk, a rotating shaft and a transmission wheel.

[0027] Figure 4 for Figure 1 The left side view of the flattening mechanism and the battery cell shown.

[0028] Figure 5 It is a schematic diagram of the structure of a flattening device in one embodiment of the present application.

[0029] Figure 6 for Figure 5 A front view of the flattening device is shown.

[0030] Figure Number:

[0031] 1. Flattening device; 2. Battery cell;

[0032] 10. flattening mechanism; 20. driving mechanism; 30. clamping mechanism; 40. sliding mechanism; 50. platform;

[0033] 11. Rotating disk; 12. Driving wheel; 13. Flattening head; 131. Shaft; 132. Flattening part; 133. Driving gear part; 14. Rotating shaft; 15. Bearing seat; 16. Dust suction head; 161. Dust suction channel; 162. Dust suction port; 163. Avoidance step surface; 164. Limiting space. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0041] Please also read Figure 1 , Figure 2 , Figure 3 and Figure 4 The battery includes a cell 2, which is the charging and discharging unit of the battery. The quality of the cell 2 has a great influence on the performance of the battery. The cell 2 is processed by flattening, encapsulating, shelling, and welding of the current collecting plate in sequence before it can be assembled into a battery.

[0042] In the related art, a flattening mechanism 10 is used to flatten the end surface of the battery cell 2. The specific working process is as follows: all the flattening heads 13 arranged on one side of the rotating disk 11 revolve synchronously under the action of the rotating disk 11, so that there is a relative speed between each flattening head 13 and the end surface of the battery cell 2, and then, a friction force is formed between each flattening head 13 and the end surface of the battery cell 2. Then, each flattening head 13 independently rotates under the action of the friction force formed between the end surface of the battery cell 2 to flatten the end surface of the battery cell 2.

[0043] However, since different kneading heads 13 may have different loads, and different kneading heads 13 have inconsistent contact areas with the end faces of the battery cells 2, the friction forces formed between the kneading heads 13 and the battery cells 2 will also be different, which in turn causes the kneading heads 13 to have different rotation speeds. The kneading heads 13 with different rotation speeds are easy to form uneven end faces of the battery cells 2, affecting the kneading quality of the battery cells 2, and even affecting the subsequent welding quality of the battery cells 2 and the collector plate.

[0044] For example, within the allowable weight error range of manufacturing, different kneading heads 13 have different weights, resulting in different loads of different kneading heads 13. In addition, within the allowable size error range of manufacturing, different sizes of kneading heads 13 also have different sizes, resulting in different contact areas between different kneading heads 13 and battery cells 2.

[0045] Of course, the reasons for different loads and contact areas are not limited to the above reasons. They may also be caused by installation errors, which will not be further explained here.

[0046] In order to alleviate the above problems, the applicant has designed a flattening mechanism 10 after in-depth research. The flattening mechanism 10 includes a rotating disk 11, a transmission wheel 12 and a plurality of flattening heads 13. The transmission wheel 12 is rotatably arranged on one side of the rotating disk 11. The plurality of flattening heads 13 are arranged on the side of the rotating disk 11 facing or facing away from the transmission wheel 12 and are distributed in a circumference. The flattening head 13 has a shaft 131, a flattening portion 132 and a transmission tooth portion 133. The flattening portion 132 is installed on one end of the shaft 131. The transmission tooth portion 133 is sleeved outside the shaft 131 and meshes with the transmission wheel 12. The other end of the shaft 131 away from the flattening portion 132 rotates with the rotating disk 11. Among them, all the flattening heads 13 revolve synchronously when the rotating disk 11 rotates. When at least one flattening head 13 rotates by means of the friction formed between it and the battery cell 2, it drives the transmission wheel 12 to rotate, so as to synchronously drive the remaining flattening heads 13 to rotate. The rotation axis of the rotating disk 11, the rotation axis of the transmission wheel 12, and the revolution axis of the smoothing head 13 are collinear.

[0047] Exemplarily, the transmission wheel 12 is a helical gear. Compared with the spur gear transmission, the helical gear can greatly improve the transmission efficiency, so that the linkage between the kneading heads 13 is stronger. In addition, when the helical gear is in transmission, the gear tooth surface is smoother and the meshing is more stable, so the vibration and noise generated during transmission will be less, the operation is stable, and the noise is small, thereby improving the user experience to a certain extent.

[0048] It should be understood that the flattening portion 132 refers to the portion of the flattening head 13 used to contact and flatten the end surface of the battery cell 2, the transmission tooth portion 133 refers to the portion of the flattening head 13 used to mesh with the transmission wheel 12 and realize transmission, and the shaft portion 131 refers to the portion of the flattening head 13 on which the flattening portion 132 and the transmission tooth portion 133 are installed, and which rotates with the rotating disk 11 to realize the revolution of the flattening head 13.

[0049] To ensure that the flattening portion 132 of the flattening head 13 can flatten effectively, the flattening portion 132 of the flattening head 13 should have a distance difference with the driving wheel 12 in the extension direction of the rotation axis of the rotating disk 11, and the flattening portion 132 should be arranged away from the rotating disk 11 relative to the driving wheel 12.

[0050] Exemplarily, the other end of the shaft portion 131 away from the flattening portion 132 is rotationally matched with the rotating disk 11 through the bearing seat 15. Specifically, the bearing seat 15 includes a seat body and a bearing portion, the seat body is mounted on the rotating disk 11, the bearing portion is arranged in the seat body, and the other end of the shaft portion 131 away from the flattening portion 132 passes through the inner ring of the bearing portion so that the flattening head 13 can rotate freely. When the rotating disk 11 rotates, the flattening head 13 can not only revolve, but also rotate around its own axis of rotation to ensure the flatness of the end face of the battery cell 2 and improve the flattening effect. It should be understood that there may be other situations in which the rotational cooperation between the shaft portion 131 and the rotating disk 11 can exist, which will not be illustrated one by one here.

[0051] For example, the outer contour of each flattening head 13 is roughly so as to be processed to form each flattening head 13. For example, the flattening portion 132 of each flattening head 13 is a conical structure, the transmission tooth portion 133 of each flattening head 13 is a spur gear structure, and the shaft portion 131 of each flattening head 13 is a round shaft structure.

[0052] For example, the number and installation position of the kneading heads 13 installed on the rotating disk 11 can be selected according to actual needs. Figure 1 The installation relationship between the three kneading heads 13 and the rotating disk 11 is schematically shown. Figure 1 For an exemplary view, Figure 1 The number of the flattening heads 13 shown does not constitute a limitation on the number of the flattening heads 13 in the embodiment of the present application.

[0053] Exemplarily, the kneading head 13 is located on the side of the rotating disk 11 facing the transmission wheel 12. Therefore, in the extension direction of the rotation axis of the rotating disk 11, there is a space where the kneading head 13 and the transmission wheel 12 partially overlap, which is conducive to reducing the size of the kneading mechanism 10 in this direction and reducing the occupied space. It should be understood that the installation position relationship between the kneading head 13 and the transmission wheel 12 can also exist in other situations, for example, the kneading head 13 is located on the side of the rotating disk 11 facing away from the transmission wheel 12.

[0054] The rotation axis of the rotating disk 11, the rotation axis of the transmission wheel 12, and the revolution axis of the kneading head 13 are collinear. Figure 3 The middle dotted line L is not only the rotation axis of the rotating disk 11 , but also the rotation axis of the transmission wheel 12 , and also the revolution axis of the smoothing head 13 .

[0055] During actual operation, all the flattening heads 13 are driven by the rotating disk 11 and revolve synchronously when the rotating disk 11 rotates. When at least one flattening head 13 rotates by means of the friction formed between it and the battery cell 2, the transmission tooth portion 133 on the rotating flattening head 13 will drive the transmission wheel 12 to rotate, thereby forcing the transmission wheel 12 to synchronously drive the remaining non-rotating flattening heads 13 to rotate, so as to ensure that all the flattening heads 13 can be driven by the transmission wheel 12 to realize synchronous and uniform rotation, thereby overcoming the problem of uneven end surfaces of the battery cell 2 caused by the asynchronous rotation.

[0056] It is understandable that, since the shafts 131 of the kneading heads 13 are independently rotated with the rotating disk 11, when the rotating disk 11 rotates, there may be differences in the reaction timing between the different kneading heads 13. The kneading heads 13 that react quickly rotate, and through the transmission wheel 12 as a medium, the kneading heads 13 that react slowly rotate synchronously, so that all the kneading heads 13 are linked and rotate synchronously and at a uniform speed.

[0057] Please refer again Figure 3 For example, the transmission tooth portion 133 is indirectly connected to the flattening portion 132 once through the shaft portion 131, and the transmission tooth portion 133 is directly connected to the flattening portion 132 twice. Therefore, power transmission can be achieved between the flattening portion 132 and the transmission wheel 12 only through the transmission tooth portion 133. The power transmission path has fewer components, the power transmission is faster and has less loss, which can improve the power transmission efficiency and transmission stability to a certain extent.

[0058] Please refer again Figure 2 , Figure 3 , Figure 4 and Figure 5 The kneading mechanism 10 further includes a rotating shaft 14 , a rotating disk 11 and a transmission wheel 12 which are arranged at intervals and are both sleeved outside the rotating shaft 14 , the rotating disk 11 is fixedly matched with the rotating shaft 14 , and the transmission wheel 12 is rotationally matched with the rotating shaft 14 .

[0059] Specifically, the rotating shaft 14 and the rotating disk 11 are relatively fixed, and the driving mechanism 20 drives the rotating disk 11 to rotate through the rotating shaft 14. As for the transmission wheel 12, it is rotatably sleeved outside the rotating shaft 14, and can rotate relative to the rotating shaft 14 under the drive of the smoothing head 13. With the setting of the rotating shaft 14, the transmission wheel 12 and the rotating disk 11 can be installed synchronously on the same shaft, and the installation efficiency is high.

[0060] Please refer again Figure 1 and Figure 2 The kneading mechanism 10 further includes a dust suction head 16 , which is disposed on a side of the rotating disk 11 facing the kneading head 13 , and has a dust suction channel 161 ; at least one dust suction head 16 is disposed between each two adjacent kneading heads 13 .

[0061] Exemplarily, the dust collector head 16 may be installed to the rotating disk 11 by non-detachable means such as interference fit, welding, and riveting, or by detachable means such as threaded connection and bolt connection, which is not specifically limited in this embodiment.

[0062] For example, the dust collection channel 161 of each dust collection head 16 is connected to the internal space of the rotating shaft 14, and the debris or dust generated during the kneading is vacuumed by a negative pressure mechanism (not shown). Of course, the negative pressure mechanism can also be directly connected to the dust collection channel 161 of the dust collection head 16, which is not specifically limited in this embodiment.

[0063] Although Figure 2 There are three dust collector heads 16 shown in the figure, but in actual application, the number of dust collector heads 16 can be increased or decreased, for example, one, two or more dust collector heads 16 can be used.

[0064] The beneficial effect of the dust collector head 16 being located between two adjacent kneading heads 13 is that, when there are multiple kneading heads 13 , the debris or dust generated during the operation of the kneading heads 13 can be uniformly discharged.

[0065] Furthermore, the width of the dust suction port 162 of the dust suction channel 161 gradually increases in a direction away from the rotation axis of the rotating disk 11 .

[0066] It can be understood that the direction away from the rotation axis of the rotating disk 11 is the radial direction of the rotating disk 11. The width of the dust suction port 162 refers to the width of the dust suction port 162 in the circumferential direction of the rotating disk 11.

[0067] Exemplarily, the dust suction head 16 is a fan-shaped hollow structure, and the farther away from the rotation axis of the rotating disk 11, the greater the arc length corresponding to the fan, that is, the width gradually increases. The advantage of the dust suction port 162 of the dust suction channel 161 gradually increasing in width in the direction away from the rotation axis of the rotating disk 11 is that the farther away from the rotation axis of the rotating disk 11, the larger the flattening area, and the more debris or dust generated accordingly. This width variation setting can achieve a better dust suction effect under the same negative pressure mechanism power condition.

[0068] In actual application, the number and shape of the dust collector heads 16 can be set according to needs, so they will not be described here.

[0069] Among them, the smoothing head 13 and the dust head 16 are both located on the side of the rotating disk 11 facing the transmission wheel 12; the outer wall of the dust head 16 is partially retracted inward in the direction away from the rotation axis of the rotating disk 11 to form a step surface 163 for avoiding the transmission wheel 12, thereby avoiding the transmission wheel 12 repeatedly contacting the dust head 16 during rotation and causing wear of the transmission wheel 12 and the dust head 16, which is beneficial to extending the service life of the smoothing mechanism 10.

[0070] See also Figure 1 Furthermore, the avoidance step surfaces 163 of all the dust collector heads 16 jointly define a limiting space 164 for limiting the transmission wheel 12. Specifically, the avoidance step surfaces 163 of all the dust collector heads 16 are arranged around the periphery of the transmission wheel 12, and when they cooperate together, they simultaneously limit the movement of the transmission wheel 12 along the circumferential direction and axial direction of the transmission wheel 12. The advantage of this design is that the risk of the transmission wheel 12 shaking during the operation of the transmission wheel 12 can be reduced, which is conducive to improving the stability of the operation of the transmission wheel 12.

[0071] See also Figure 1 , and also see Figure 5 and Figure 6 The present application also provides a flattening device 1, comprising a platform 50, a flattening mechanism 10, a driving mechanism 20 and a clamping mechanism 30. The flattening mechanism 10 and the driving mechanism 20 are both mounted on the platform 50, and the driving mechanism 20 is in transmission connection with the rotating shaft 14, and the clamping mechanism 30 is used to clamp the battery cell 2 and make the central axis of the battery cell 2 and the rotation axis of the rotating disk 11 collinear.

[0072] Exemplarily, the driving mechanism 20 includes a power source, a driving wheel, a driven wheel and a synchronous belt, the power source is connected to the driving wheel, the synchronous belt is sleeved outside the driving wheel and the driven wheel, and the end of the rotating shaft 14 away from the rotating disk 11 is inserted into the center hole of the driven wheel and fixed to the driven wheel. In actual operation, the power source drives the rotating shaft 14 to rotate through the driving wheel, the synchronous belt and the driven wheel in sequence, and the rotating disk 11 is fixedly connected to the rotating shaft 14, so that the rotating shaft 14 drives the rotating disk 11 to rotate around its rotation axis.

[0073] In this embodiment, the power source adopts an existing drive structure such as a motor and an internal combustion engine, which is not specifically limited in this embodiment. In this embodiment, those skilled in the art should understand that the rotating disk 11 can also be driven to rotate by various methods such as chain transmission and gear transmission, which is not specifically limited in this application.

[0074] Exemplarily, the clamp mechanism 30 can be installed on a platform 50 , or can be installed on other suitable sites, such as the ground.

[0075] In actual application, the clamping mechanism 30 or the flattening mechanism 10 moves to make the circumferential side surface of the flattening portion 132 fit the end surface of the battery cell 2. Then, the rotating disk 11 drives the flattening head 13 to revolve, and the flattening head 13 rotates relative to the rotating disk 11 under the action of the friction between it and the battery cell 2 to flatten the battery cell 2. The debris or dust generated during the flattening process is discharged through the dust suction head 16.

[0076] As a preferred solution, the flattening mechanisms 10 are arranged in pairs, and each pair of flattening mechanisms 10 flattens the two opposite end surfaces of the same battery core 2. A clamping mechanism 30 is arranged between each pair of flattening mechanisms 10.

[0077] For example, the number of pairs and installation positions of the flattening mechanism 10 can be selected according to actual needs. Figure 5 It is schematically shown that four flattening mechanisms 10 are divided into two pairs and flatten two different battery cells 2 . Figure 5 For an exemplary view, Figure 5 The illustrated number of pairs of the flattening mechanism 10 does not constitute a limitation on the number of pairs of the flattening mechanism 10 in the embodiment of the present application.

[0078] The flattening device 1 further includes a sliding mechanism 40, which corresponds to and is transmission-connected with the flattening mechanism 10. Under the action of the corresponding sliding mechanism 40, the paired flattening mechanisms 10 can move toward each other (i.e., approach each other) or away from each other (i.e., move away from each other) to approach or move away from the battery cell 2.

[0079] The sliding mechanism 40 can be in various forms such as a cylinder, a slide rail, etc., and the embodiments of the present application do not impose specific limitations. When working, the clamping mechanism 30 is used to grab and move the battery cell 2, and the battery cell 2 is moved to a position where the central axis of the battery cell 2 is in line with the rotation axis of the rotating disk 11 through the clamping mechanism 30.

[0080] During actual operation, the clamping mechanism 30 grabs the battery cell 2 and moves between the two flattening mechanisms 10 arranged in pairs, and makes the central axis of the battery cell 2 collinear with the rotation axis of the rotating disk 11 located on both sides. Then, the paired flattening mechanisms 10 move toward each other, the rotating disk 11 rotates, and the flattening head 13 flattens the battery cell 2. The two flattening mechanisms 10 and the rotating disk 11 on both sides of the battery cell 2 can rotate in the same direction or in the opposite direction, and the embodiments of the present application do not limit this. After the flattening is completed, the two flattening mechanisms 10 move away from each other, the clamping mechanism 30 releases the battery cell 2, and the flattening device 1 enters the next working cycle.

[0081] In the above-mentioned flattening mechanism 10 and flattening device 1, all the flattening heads 13 are driven by the rotating disk 11 and revolve synchronously when the rotating disk 11 rotates. When at least one flattening head 13 rotates by means of the friction force formed between it and the battery cell 2, the transmission tooth portion 133 on the rotating flattening head 13 will drive the transmission wheel 12 to rotate, and then force the transmission wheel 12 to synchronously drive the remaining non-rotating flattening heads 13 to rotate, so as to ensure that all the flattening heads 13 can be driven by the transmission wheel 12 to realize synchronous and uniform rotation at the same rotation speed, thereby overcoming the problem of uneven end surfaces of the battery cell 2 caused by asynchronous rotation, and having higher flattening quality.

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A flattening mechanism, characterized in that: The flattening mechanism comprises: Rotating disk (11); a transmission wheel (12) rotatably disposed on one side of the rotating disk (11); and A plurality of flattening heads (13) are arranged on one side of the rotating disk (11) facing toward or away from the transmission wheel (12) and are distributed in a circumferential manner. The flattening heads (13) comprise a shaft portion (131), a flattening portion (132) and a transmission tooth portion (133). The flattening portion (132) is mounted on one end of the shaft portion (131). The transmission tooth portion (133) is sleeved outside the shaft portion (131) and meshes with the transmission wheel (12). The other end of the shaft portion (131) away from the flattening portion (132) is rotationally matched with the rotating disk (11). All of the kneading heads (13) revolve synchronously when the rotating disk (11) rotates, and when at least one of the kneading heads (13) rotates by means of the friction force formed between it and the battery cell (2), it drives the transmission wheel (12) to rotate, thereby synchronously driving the remaining kneading heads (13) to rotate; The rotation axis of the rotating disk (11), the rotation axis of the transmission wheel (12), and the revolution axis of the smoothing head (13) are collinear.

2. The flattening mechanism according to claim 1, characterized in that: The smoothing head (13) is located on a side of the rotating disk (11) facing the transmission wheel (12).

3. The flattening mechanism according to claim 1, characterized in that: The transmission tooth portion (133) is indirectly connected to the flattening portion (132) once through the shaft portion (131), and the transmission tooth portion (133) is directly connected to the flattening portion (132) twice.

4. The flattening mechanism according to claim 1, characterized in that: The transmission wheel (12) is a helical gear.

5. The flattening mechanism according to claim 1, characterized in that: Also includes a rotating shaft (14); The rotating disk (11) and the transmission wheel (12) are arranged at intervals and are both sleeved outside the rotating shaft (14); the rotating disk (11) is fixedly matched with the rotating shaft (14), and the transmission wheel (12) is rotationally matched with the rotating shaft (14).

6. The flattening mechanism according to claim 1, characterized in that: The flattening mechanism further comprises a dust suction head (16), the dust suction head (16) being arranged on a side of the rotating disk (11) facing the flattening head (13), and the dust suction head (16) having a dust suction channel (161); at least one dust suction head (16) is arranged between every two adjacent flattening heads (13).

7. The flattening mechanism according to claim 6, characterized in that: The width of the dust suction port (162) of the dust suction channel (161) gradually increases in a direction away from the rotation axis of the rotating disk (11).

8. The flattening mechanism according to claim 7, characterized in that: The smoothing head (13) and the dust collecting head (16) are both located on the side of the rotating disk (11) facing the transmission wheel (12); the outer wall of the dust collecting head (16) is partially retracted inward in a direction away from the rotation axis of the rotating disk (11) to form a step surface (163) that avoids the transmission wheel (12).

9. The flattening mechanism according to claim 8, characterized in that: The avoidance step surfaces (163) of all the vacuum heads (16) jointly define a limiting space (164) for limiting the transmission wheel (12).

10. A flattening device, characterized in that: include: Platform (50); as well as The flattening mechanism according to any one of claims 1 to 9, wherein the flattening mechanism is mounted on the platform (50); The clamping claw mechanism (30) is used to clamp the battery core (2) and make the central axis of the battery core (2) and the rotation axis of the rotating disk (11) colinear.

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