Full-tab battery core flattening device and flattening method

Abstract

The embodiment of the present invention provides a full-tab battery core flattening device and a flattening method. The full-tab battery core flattening device includes: a battery clamping device and a flattening device. The flattening device can move in a direction close to or away from the battery clamping device. A flattening head assembly is installed on the flattening device. The flattening head assembly can be fed in a radial direction parallel to the pre-pressed flat end face of the full-tab battery core. And the battery clamping device and the flattening device can rotate relative to each other, so that the flattening head assembly can press down the tabs on the full-tab battery core one by one from the outside to the inside. The flattening head assembly on the flattening device can press down the tabs on the full-tab battery core one by one from the outside to the inside along the radial direction of the pre-pressed flat end face. The pressing direction of the tabs of the full-tab battery core is consistent, which ensures the contact effect between the tabs, thereby improving the current collection effect of the full-tab battery. The flattening device will not shatter the tabs, greatly improving the safety of the full-tab battery.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, and in particular to a device and method for flattening a full-tab battery core. Background Art

[0002] In the production process of full-tab batteries, the tab flattening process is required. The tab flattening process is to press down the originally upright tabs so that the tabs are in contact with each other to achieve better current collection. At the same time, the tabs after flattening are in the same plane, which is also convenient for the subsequent current collector welding work.

[0003] At present, the tab flattening methods are mainly divided into two methods: mechanical flattening and ultrasonic flattening. Among them, the existing mechanical flattening methods mostly flatten the tabs by axial feeding. This method will cause the tabs to be pressed in inconsistent directions, the tabs to deform, and affect the contact effect of each tab, thereby reducing the current collection effect. The ultrasonic flattening method will cause the tabs to be shattered, especially the positive aluminum foil. The debris entering the battery will affect the safety performance. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a full-tab battery core flattening device and a flattening method.

[0005] According to a first aspect of the present invention, a full-tab battery core flattening device is provided, comprising: a battery clamping device and a flattening device.

[0006] The flattening device can move in a direction close to or away from the battery clamping device. A flattening head assembly is installed on the flattening device. The flattening head assembly can be fed in a radial direction parallel to the pre-flattened end surface of the full-tab battery roll core. The battery clamping device and the flattening device can rotate relative to each other, so that the flattening head assembly can press down the tabs on the full-tab battery roll core one by one from the outside to the inside.

[0007] According to a full-tab battery core flattening device provided by the present invention, the flattening device further comprises a first rotating shaft and a mounting disk. The first rotating shaft is connected to the mounting disk. The flattening head assembly is mounted on the mounting disk. The first rotating shaft can drive the mounting disk and the flattening head assembly to rotate.

[0008] According to a full-tab battery core flattening device provided by the present invention, a second rotating shaft is installed on the battery clamping device. The second rotating shaft can drive the battery clamping device to rotate. The flattening device also includes a mounting plate. The flattening head assembly is installed on the mounting plate.

[0009] According to a full-tab battery core flattening device provided by the present invention, the flattening head assembly includes a connecting frame, a connecting shaft and a flattening head.

[0010] The connecting frame is connected to the mounting plate, the connecting shaft is connected to the connecting frame, the flattening head is connected to the connecting shaft, and the connecting frame can drive the connecting shaft and the flattening head to feed along a radial direction parallel to the pre-pressed flat end surface.

[0011] According to a full-tab battery core flattening device provided by the present invention, on the flattening head, the flattening end surface in contact with the full-tab battery core is parallel to the pre-flattening end surface.

[0012] According to a full-tab battery core flattening device provided by the present invention, the length of the flattened end surface along the radial direction parallel to the pre-pressed flattened end surface is greater than or equal to the radius of the pre-pressed flattened end surface. In addition, the highest point of the radial feed of the flattening head is the coincidence point of the vertex of the flattening head and the center point of the pre-pressed flattened end surface.

[0013] According to a full-tab battery core flattening device provided by the present invention, the connecting shaft can drive the flattening head to rotate along the central axis of the connecting shaft.

[0014] According to a full-tab battery core flattening device provided by the present invention, at least one of the two sides of the battery clamping device is provided with the flattening device.

[0015] According to the full-tab battery core flattening device provided by the present invention, a plurality of flattening head assemblies are provided on the mounting plate, and each of the flattening head assemblies can be fed along a radial direction parallel to the pre-flattened end surface.

[0016] According to a second aspect of the present invention, a flattening method based on a full-tab battery core flattening device is provided, the flattening method comprising:

[0017] Clamping the full-tab battery core on the battery clamping device;

[0018] The flattening device is moved in a direction close to the battery clamping device until the flattening end surface of the flattening head assembly is flush with the pre-pressed flattening end surface of the full-tab battery winding core;

[0019] The flattening device and the battery clamping device are caused to rotate relative to each other;

[0020] The flattening head assembly is fed in the radial direction of the pre-flattened end surface, so as to press down and flatten the tabs on the end surface of the full-tab battery roll core one by one from the outside to the inside;

[0021] The flattening device and the battery clamping device are continuously rotated relative to each other so that the tabs can be pressure-maintained and shaped;

[0022] The flattening device is moved in a direction away from the battery clamping device, and the flattening device and the battery clamping device are stopped from rotating relative to each other.

[0023] In the full-tab battery core flattening device provided by the present invention, the flattening device can move in a direction close to the battery clamping device when performing the tab flattening work. The flattening head assembly on the flattening device can be fed in a radial direction parallel to the pre-flattened end surface of the full-tab battery core. And the battery clamping device and the flattening device can rotate relative to each other, so that the flattening head assembly can press down the tabs on the full-tab battery core one by one from the outside to the inside. After the tab flattening work is completed, the flattening device can move in a direction away from the battery clamping device.

[0024] With this structural setting, the flattening head assembly on the flattening device can press down the tabs on the full-tab battery core one by one from the outside to the inside along the radial direction of the pre-flattened end surface of the full-tab battery core. As a result, the pressing direction of the tabs of the full-tab battery core is consistent, ensuring the contact effect between the tabs, thereby improving the current collection effect of the full-tab battery. At the same time, the flattening device will not shatter the tabs, greatly improving the safety of the full-tab battery.

[0025] Furthermore, in the flattening method provided by the present invention, the flattening operation of the tabs on the full-tab battery core is performed by radial feeding and flattening, so that the pressing direction of the tabs of the full-tab battery core is consistent, ensuring the contact effect between the tabs, thereby improving the current collection effect of the full-tab battery. At the same time, the flattening method will not shatter the tabs, greatly improving the safety of the full-tab battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 2. It is a schematic structural diagram of a full-tab battery core flattening device provided by the present invention;

[0028] Reference numerals:

[0029] 100: battery clamping device; 200: flattening device; 201: flattening head assembly;

[0030] 202: connecting frame; 203: connecting shaft; 204: flattening head;

[0031] 205: flattening end surface; 206: vertex; 207: first rotation axis;

[0032] 208: mounting plate; 300: full-tab battery reel; 301: tab;

[0033] 302: Pre-pressed flat end surface; 303: Center point. DETAILED DESCRIPTION

[0034] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0037] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the 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, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, in the absence of mutual contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples to make the purpose, technical solutions and advantages of the embodiment of the present invention clearer. The technical solutions in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0039] Combine the following Figure 1 A full-tab battery core flattening device and flattening method provided in an embodiment of the present invention are described. It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute any particular limitation to the present invention.

[0040] The embodiment of the first aspect of the present invention provides a full-tab battery core flattening device, such as Figure 1 As shown, the full-tab battery core flattening device includes: a battery clamping device 100 and a flattening device 200.

[0041] The flattening device 200 can move in a direction close to or away from the battery clamping device 100. A flattening head assembly 201 is installed on the flattening device 200. The flattening head assembly 201 can be fed in a radial direction parallel to the pre-flattened end surface 302 of the full-tab battery roll core 300. The battery clamping device 100 and the flattening device 200 can rotate relative to each other, so that the flattening head assembly 201 can press down the tabs 301 on the full-tab battery roll core 300 one by one from the outside to the inside.

[0042] In the full-tab battery core flattening device provided by the present invention, the flattening device 200 can move in a direction close to the battery clamping device 100 when flattening the tabs 301. The flattening head assembly 201 on the flattening device 200 can be fed in a radial direction parallel to the pre-flattened end surface 302 of the full-tab battery core 300. The battery clamping device 100 and the flattening device 200 can rotate relative to each other, so that the flattening head assembly 201 can press down the tabs 301 on the full-tab battery core 300 one by one from the outside to the inside. After the flattening of the tabs 301 is completed, the flattening device 200 can move in a direction away from the battery clamping device 100.

[0043] Through this structural setting, the flattening head assembly 201 on the flattening device 200 can press down the tabs 301 on the full-tab battery core 300 one by one from the outside to the inside along the radial direction of the pre-flattened end surface 302 of the full-tab battery core 300. As a result, the pressing direction of the tabs 301 of the full-tab battery core 300 is consistent, ensuring the contact effect between the tabs 301, thereby improving the current collection effect of the full-tab battery. At the same time, the flattening device 200 will not shatter the tabs, greatly improving the safety of the full-tab battery.

[0044] In one embodiment of the present invention, the flattening device 200 further includes a first rotating shaft 207 and a mounting plate 208. The first rotating shaft 207 is connected to the mounting plate 208. The flattening head assembly 201 is mounted on the mounting plate 208. The first rotating shaft 207 can drive the mounting plate 208 and the flattening head assembly 201 to rotate.

[0045] For example, Figure 1 As shown, the flattening device 200 is coaxially arranged with the battery clamping device 100. A battery clamping area is provided on the battery clamping device 100. The full-tab battery roll core 300 is clamped in the battery clamping area, and the central axis of the full-tab battery roll core 300 installed in the battery clamping area also coincides with the central axis of the flattening device 200 and the battery clamping device 100.

[0046] The mounting disk 208 is connected to the first rotating shaft 207, and the flattening head assembly 201 is connected to the mounting disk 208. The first rotating shaft 207 can drive the mounting disk 208 and the flattening head assembly 201 to rotate. The battery clamping device 100 is stationary. At the same time, the full-tab battery roll core 300 and the battery clamping device 100 are relatively stationary. As a result, the battery clamping device 100 and the flattening device 200 can rotate relative to each other, and then the full-tab battery roll core 300 and the flattening device 200 can rotate relative to each other. At this time, the flattening head assembly 201 is fed along the radial direction of the pre-flattened end surface 302, and finally the flattening head assembly 201 presses down the tabs 301 on the full-tab battery roll core 300 one by one from the outside to the inside.

[0047] For another example, in one embodiment of the present invention, a second rotating shaft is installed on the battery clamping device 100. The second rotating shaft can drive the battery clamping device 100 to rotate. The flattening device 200 also includes a mounting plate 208. The flattening head assembly 201 is installed on the mounting plate 208.

[0048] The second rotating shaft can drive the battery clamping device 100 to rotate along the central axis of the battery clamping device 100. The full-tab battery roll core 300 and the battery clamping device 100 are relatively stationary. The mounting plate 208 in the flattening device 200 is stationary. As a result, the full-tab battery roll core 300 and the flattening device 200 can rotate relative to each other. At this time, the flattening head assembly 201 is fed along the radial direction of the pre-flattened end surface 302, and finally the flattening head assembly 201 presses down the tabs 301 on the full-tab battery roll core 300 one by one from the outside to the inside.

[0049] It should be understood here that the above embodiment is only an illustrative embodiment of the present invention and does not constitute any limitation to the present invention. In the above two embodiments, one embodiment illustrates a technical solution in which the battery clamping device 100 and the full-tab battery roll 300 core are stationary, and the flattening device 200 rotates to perform a flattening operation on the tab 301; the other embodiment illustrates a technical solution in which the flattening device 200 is stationary, and the battery clamping device 100 and the full-tab battery roll 300 rotate to perform a flattening operation on the tab 301. Technical solutions that satisfy the requirement that the full-tab battery roll 300 and the flattening device 200 can rotate relative to each other to perform a flattening operation on the tab 301 are all within the protection scope of the present invention.

[0050] In one embodiment of the present invention, the kneading head assembly 201 includes a connecting frame 202 , a connecting shaft 203 and a kneading head 204 .

[0051] The connecting frame 202 is connected to the mounting plate 208. The connecting shaft 203 is connected to the connecting frame 202. The kneading head 204 is connected to the connecting shaft 203. The connecting frame 202 can drive the connecting shaft 203 and the kneading head 204 to feed along the radial direction parallel to the pre-pressed flat end surface 302.

[0052] It should be understood that the present invention does not impose any limitation on the specific material of the kneading head 204. For example, in one embodiment of the present invention, the material of the kneading head 204 is polytetrafluoroethylene.

[0053] Further, in one embodiment of the present invention, on the flattening head 204 , the flattening end surface 205 in contact with the full-tab battery winding core 300 is parallel to the pre-flattening end surface 302 .

[0054] like Figure 1As shown, the connecting frame 202 can be slidably mounted on the mounting plate 208. The connecting shaft 203 is connected to the connecting frame 202. A flattening head 204 is installed at the end of the connecting frame 202. The connecting frame 202 can drive the connecting shaft 203 and the flattening head 204 to feed along the radial direction parallel to the pre-pressed flattened end surface 302. At the same time, the flattened end surface 205 on the flattening head 204 that contacts the full-tab battery winding core 300 is parallel to the pre-pressed flattened end surface 302. For example, in Figure 1 As shown, the kneading flat end surface 205 and the pre-pressing flat end surface 302 are both vertical planes.

[0055] Through this structural setting, the flattened end surface 205 on the flattening head 204 that contacts the full-tab battery core 300 is parallel to the pre-pressed end surface 302. On the basis of ensuring that the flattening device 200 presses the tabs 301 on the full-tab battery core 300 from the outside to the inside one by one, it can prevent the tabs 301 from deforming, make the pre-pressed end surface 302 smoother, improve battery performance, and facilitate subsequent collecting plate welding operations.

[0056] In one embodiment of the present invention, the length of the flattened end surface 205 along the radial direction parallel to the pre-flattened end surface 302 is greater than or equal to the radius of the pre-flattened end surface 302. In addition, the highest point of radial feeding of the flattening head 204 is the coincidence point of the vertex 206 of the flattening head 204 and the center point 303 of the pre-flattened end surface 302.

[0057] For example, Figure 1 As shown, it is assumed that the flattening end surface 205 and the pre-pressing flattening end surface 302 are both vertical planes. At this time, the vertical length of the flattening end surface 205 on the flattening head 204 that contacts the pre-pressing flattening end surface 302 is greater than the radius of the pre-pressing flattening end surface 302. The vertex 206 of the flattening head 204 cannot feed beyond the center point 303 of the pre-pressing flattening end surface 302.

[0058] According to the embodiments described above, this structural arrangement enables the length of the flattened end surface 205 along the radial direction parallel to the pre-flattened end surface 302 to be greater than or equal to the radius of the pre-flattened end surface 302, thereby ensuring that all the tabs 301 on the full-tab battery roll core 300 are pressed down and flattened.

[0059] In addition, the highest point of the radial feed of the flattening head 204 is the coincidence point of the vertex 206 of the flattening head 204 and the center point 303 of the pre-flattened end surface 302, which can effectively prevent the flattening head 204 from pressing down the tabs 301 on the full-tab battery roll core 300 that exceed its radius from the inside to the outside, thereby avoiding the problem of reducing the battery current collection performance due to poor contact between the tabs 301.

[0060] In one embodiment of the present invention, the connecting shaft 203 can drive the smoothing head 204 to rotate along the central axis of the connecting shaft 203 .

[0061] With this structural setting, the connecting shaft 203 can drive the flattening head 204 to rotate. At the same time, the battery clamping device 100 and the flattening device 200 can also rotate relative to each other. Thus, the flattening efficiency and effect of the tab 301 can be greatly improved.

[0062] In one embodiment of the present invention, a plurality of kneading head assemblies 201 are disposed on the mounting plate 208. Each kneading head assembly 201 can be fed along a radial direction parallel to the pre-flattened end surface 302.

[0063] For example, the center of the mounting plate 208 can be used as the center point of the array to evenly arrange a plurality of flattening head assemblies 201. Each flattening head assembly 201 can be fed along a radial direction parallel to the pre-flattened end surface 302. By arranging a plurality of flattening head assemblies 201 on the mounting plate 208, the flattening efficiency and flattening effect of the tab 301 can be greatly improved.

[0064] Furthermore, in one embodiment of the present invention, at least one of the two sides of the battery clamping device 100 is provided with a flattening device 200 .

[0065] For example, Figure 1 As shown, a flattening device 200 is provided on the right side of the battery clamping device 100. After the tab 301 on the right end surface of the full-tab battery winding core 300 is flattened, the full-tab battery winding core 300 is installed in reverse to flatten the tab 301 on the left end surface of the full-tab battery winding core 300.

[0066] Similarly, a flattening device 200 may be provided on the left side of the battery clamping device 100. After the tab 301 on the left end surface of the full-tab battery winding core 300 is flattened, the full-tab battery winding core 300 is installed in reverse to flatten the tab 301 on the right end surface of the full-tab battery winding core 300.

[0067] In addition, a flattening device 200 may be provided on both sides of the battery clamping device 100. The flattening devices 200 located on both sides of the battery clamping device 100 may be rotated and fed simultaneously. Thus, the tabs 301 at both ends of the full-tab battery roll core 300 may be flattened simultaneously. With this structural setting, the flattening efficiency of the tabs 301 may be greatly improved.

[0068] The embodiment of the second aspect of the present invention provides a flattening method based on the above-mentioned full-tab battery core flattening device, comprising:

[0069] S101: clamping the full-tab battery core 300 on the battery clamping device 100;

[0070] S102: The flattening device 200 is moved in a direction close to the battery clamping device 100 until the flattening end surface 205 of the flattening head assembly 201 is flush with the pre-pressed flattening end surface 302 of the full-tab battery winding core 300;

[0071] S103: causing the flattening device 200 and the battery clamping device 100 to rotate relative to each other;

[0072] S104: feeding the flattening head assembly 201 along the radial direction of the pre-flattened end surface 302 to press down and flatten the tabs 301 on the end surface of the full-tab battery roll core 300 one by one from the outside to the inside;

[0073] S105: the flattening device 200 and the battery clamping device 100 are continuously rotated relative to each other so that the tab 301 is pressure-maintained and shaped;

[0074] S106: The flattening device 200 is moved in a direction away from the battery clamping device 100, and the flattening device 200 and the battery clamping device 100 stop rotating relative to each other.

[0075] For example, in S101, a battery clamping area is provided on the battery clamping device 100, and the full-tab battery core 300 is clamped on the battery clamping device 100. The central axis of the full-tab battery core 300 coincides with the central axis of the battery clamping device 100. In addition, the full-tab battery core 300 and the battery clamping device 100 are relatively stationary.

[0076] In S102 , the flattening device 200 is pushed or automatically controlled to approach the battery clamping device 100 , so that the flattening end surface 205 of the flattening head 204 in contact with the pre-pressed flattening end surface 302 is flush.

[0077] In S103, the flattening device 200 and the battery clamping device 100 are made to rotate relative to each other. For example, in this embodiment, the flattening device 200 is made to rotate, and the battery clamping device 100 is made to be stationary.

[0078] In S104, the connecting frame 202 drives the connecting shaft 203 and the flattening head 204 to feed along the radial direction of the pre-flattened end surface 302. Thus, the flattening head 204 presses down and flattens the tabs 301 on the end surface of the full-tab battery roll core 300 one by one from the outside to the inside.

[0079] In S105, after the flattening device 200 rotates one circle to press down all the tabs 301 on the end surface of the full-tab battery roll core 300, the flattening device 200 is allowed to continue to rotate for at least one circle to allow the tabs 301 to be pressure-maintained and shaped. For example, the flattening device 200 may be allowed to continue to rotate five circles to repeatedly press and flatten the tabs 301 on the end surface of the full-tab battery roll core 300.

[0080] In S106, after the tab 301 is pressed and shaped, the flattening device 200 is pushed or automatically controlled to move away from the battery clamping device 100. Then, the flattening device 200 stops rotating. Finally, the full tab battery roll 300 is taken out from the battery clamping device 100.

[0081] 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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for flattening the core of a full-tab battery. It is characterized in that include: Battery clamping device and flattening device, The flattening device can move in a direction close to or away from the battery clamping device, and a flattening head assembly is installed on the flattening device. The flattening head assembly can be fed in a radial direction parallel to the pre-pressed flat end surface of the full-tab battery roll core, and the battery clamping device and the flattening device can rotate relative to each other, so that the flattening head assembly can press down the tabs on the full-tab battery roll core one by one from the outside to the inside; The flattening head assembly comprises a connecting frame, a connecting shaft and a flattening head, wherein the flattening end surface of the flattening head in contact with the full-tab battery winding core is parallel to the pre-pressed flattening end surface; The length of the flattened end surface along the radial direction parallel to the pre-pressed flattened end surface is greater than or equal to the radius of the pre-pressed flattened end surface, and the highest point of the radial feed of the flattening head is the coincidence point of the vertex of the flattening head and the center point of the pre-pressed flattened end surface.

2. The full-tab battery core flattening device according to claim 1, It is characterized in that The flattening device also includes a first rotating shaft and a mounting disk, wherein the first rotating shaft is connected to the mounting disk, the flattening head assembly is mounted on the mounting disk, and the first rotating shaft can drive the mounting disk and the flattening head assembly to rotate.

3. The full-tab battery core flattening device according to claim 1, It is characterized in that The battery clamping device is provided with a second rotating shaft, and the second rotating shaft can drive the battery clamping device to rotate. The flattening device also includes a mounting plate, and the flattening head assembly is mounted on the mounting plate.

4. The full-tab battery core flattening device according to claim 2 or 3, It is characterized in that in, The connecting frame is connected to the mounting plate, the connecting shaft is connected to the connecting frame, and the flattening head is connected to the connecting shaft. The connecting frame can drive the connecting shaft and the flattening head to feed along a radial direction parallel to the pre-pressed flat end surface.

5. The full-tab battery core flattening device according to claim 4, It is characterized in that The connecting shaft can drive the kneading head to rotate along the central axis of the connecting shaft.

6. The full-tab battery core flattening device according to claim 1, It is characterized in that At least one of the two sides of the battery clamping device is provided with the flattening device.

7. The full-tab battery core flattening device according to claim 2 or 3, It is characterized in that A plurality of the flattening head assemblies are arranged on the mounting plate, and each of the flattening head assemblies can be fed along a radial direction parallel to the pre-pressed flat end surface.

8. A flattening method based on the full-tab battery core flattening device according to any one of claims 1 to 7, It is characterized in that include: Clamping the full-tab battery core on the battery clamping device; The flattening device is moved in a direction close to the battery clamping device until the flattening end surface of the flattening head assembly is flush with the pre-pressed flattening end surface of the full-tab battery winding core; The flattening device and the battery clamping device are caused to rotate relative to each other; The flattening head assembly is fed in the radial direction of the pre-flattened end surface, so as to press down and flatten the tabs on the end surface of the full-tab battery roll core one by one from the outside to the inside; The flattening device and the battery clamping device are continuously rotated relative to each other so that the tabs can be pressure-maintained and shaped; The flattening device is moved in a direction away from the battery clamping device, and the flattening device and the battery clamping device are stopped from rotating relative to each other.

Images