Reinforcing rib forming device and battery production line

Abstract

The utility model discloses a reinforcing rib forming device and a battery production line, the reinforcing rib forming device comprises a rolling assembly, a driving assembly and an ultrasonic assembly, the rolling assembly comprises a first roller body and a second roller body which are oppositely arranged, and the driving assembly is connected with the first roller body; and when the tab on the pole piece is arranged between the first roller body and the second roller body in a penetrating manner, the ultrasonic assembly is configured to apply ultrasonic energy to the first roller body and roll the tab to form a reinforcing rib. According to the scheme provided by the invention, when the high-frequency vibration of the ultrasonic waves is transmitted to the tab forming area, metal atoms on the tab forming area can obtain additional kinetic energy, crystal grains are dynamically recrystallized, and pores and microcracks are reduced; and meanwhile, the yield strength of metal can be reduced through vibration energy, full plastic rheology of the material is achieved under the smaller rolling pressure, the internal stress distribution of the reinforcing rib is more uniform, and the overall crack resistance and deformation resistance are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to a reinforcing rib forming device and a battery production line. BACKGROUND

[0002] In the production of the pole piece, the ear folding has always been a problem. The ear folding refers to that in the battery production or subsequent use process, the ear is accidentally bent, folded or crushed, which will cause the internal resistance of the battery to increase in the charge and discharge cycle. In order to avoid the ear folding, a reinforcing rib is rolled on the ear through a rolling device.

[0003] The reinforcing rib rolled on the ear by the rolling device in the related art has low stress. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the application provides a reinforcing rib forming device and a battery production line, which can solve the problem that the reinforcing rib rolled on the ear by the existing rolling device has low stress.

[0005] To solve the above technical problems, the application provides a reinforcing rib forming device applied to the ear of a pole piece, comprising:

[0006] A rolling assembly, the rolling assembly comprises a first roller body and a second roller body arranged oppositely;

[0007] A driving assembly, the driving assembly is connected with the first roller body and is configured to drive the first roller body to rotate;

[0008] An ultrasonic assembly, when the ear of the pole piece is arranged between the first roller body and the second roller body, the ultrasonic assembly is configured to apply ultrasonic energy to the first roller body and roll a reinforcing rib on the ear.

[0009] In the technical scheme of the application, the first roller body can roll a reinforcing rib on the ear under the cooperation of rotation and ultrasonic energy by applying ultrasonic energy to the first roller body through the ultrasonic assembly. Since the high-frequency vibration of the ultrasonic wave can make the metal atoms on the ear forming area obtain additional kinetic energy and the crystal grains undergo dynamic recrystallization when the vibration is transmitted to the ear forming area, the porosity and micro-cracks are reduced. At the same time, the vibration energy can also reduce the yield strength of the metal, so that the material can realize full plastic flow under smaller rolling pressure, avoid the hardening caused by forced extrusion, make the internal stress distribution of the reinforcing rib more uniform, and improve the overall crack resistance and deformation resistance. Moreover, the ultrasonic vibration can also make the metal material more accurately fill the protruding structure on the first roller body, so that the profile of the reinforcing rib is clearer and the size is more stable. When stressed, the load can be evenly dispersed to avoid the fracture caused by local stress concentration, thereby improving the corresponding stress.

[0010] In some embodiments, the first roller body is a reinforcing rib roller, the second roller body is a rolling bearing, and the reinforcing rib roller is provided with a protruding structure for forming reinforcing ribs on the outer periphery thereof, and the rolling bearing and the reinforcing rib roller form a gap for the tab to pass through.

[0011] In this way, after the tab passes through the gap between the rolling bearing and the reinforcing rib roller, the first roller body can roll on the tab to form reinforcing ribs under the cooperation of ultrasonic energy.

[0012] In some embodiments, the reinforcing rib forming device further comprises an adjusting assembly connected with the second roller body and configured to drive the second roller body to move so as to adjust the distance between the second roller body and the first roller body. In this way, the distance between the second roller body and the first roller body can be conveniently adjusted so as to synchronously adjust the depth of the corresponding reinforcing ribs.

[0013] In some embodiments, the adjusting assembly comprises a driving member and first and second inclined blocks.

[0014] The second roller body is mounted on the second inclined block, the driving member is connected with the first inclined block, and the driving member is configured to drive the first inclined block to move in a first direction so that the first inclined block drives the second inclined block to move in a second direction, wherein the second direction is a direction in which the second roller body approaches or moves away from the first roller body, and the first direction intersects the second direction.

[0015] In this way, the driving member can drive the first inclined block to move in the first direction relative to the second inclined block, thereby driving the second inclined block to move in the second direction, and the distance between the second roller body and the first roller body can be adjusted.

[0016] In some embodiments, the adjusting assembly further comprises a connecting member, and the driving member comprises a base, a fixed seat, a first motor and a lead screw.

[0017] The base is provided with a sliding rail, one side of the first inclined block facing the base is in sliding connection with the sliding rail, the connecting member is configured to connect the second inclined block and the base, and the second inclined block can move in the second direction relative to the connecting member.

[0018] The first motor and the fixed seat are both fixed to the base, the output shaft of the first motor is connected with the lead screw, the lead screw is rotationally connected to the fixed seat, and the lead screw is in transmission connection with the first inclined block.

[0019] In this way, the first motor can drive the lead screw to rotate, and the lead screw can drive the first inclined block to move in the first direction, thereby realizing that the first inclined block drives the second inclined block to move in the second direction.

[0020] In some embodiments, the first inclined block has a first inclined surface on a side facing the second inclined block, and the second inclined block has a second inclined surface on a side facing the first inclined block, and the first inclined surface is in abutment with the second inclined surface.

[0021] Under the condition that the first inclined surface moves in the first direction relative to the second inclined surface, the second inclined block moves in the second direction relative to the first inclined block.

[0022] In some embodiments, the reinforcing rib forming device further comprises a mounting seat connected to a side of the second inclined block away from the first inclined block, and the second roller body is rotatably connected to the mounting seat. In this way, the second roller body is conveniently connected to the second inclined block through the mounting seat.

[0023] In some embodiments, a clamping groove is arranged on a side of the second inclined block away from the first inclined block, and the mounting seat is fixed in the clamping groove. In this way, the mounting seat is conveniently fixed on the second inclined block.

[0024] In some embodiments, the ultrasonic assembly is an ultrasonic head, and an energy output end of the ultrasonic head is connected with the first roller body.

[0025] In some embodiments, the reinforcing rib forming device further comprises a detection member arranged on a discharging side of the rolling assembly and configured to detect a depth parameter of the reinforcing rib formed on the tab. In this way, the depth of the reinforcing rib is conveniently detected.

[0026] In some embodiments, the detection member comprises a detection camera and a light source, the light source is configured to illuminate a reinforcing rib area on the tab, and the detection camera is aligned with the reinforcing rib area and configured to capture an image of the reinforcing rib and obtain the depth parameter through image analysis.

[0027] In this way, the image of the reinforcing rib is conveniently captured through cooperation of the detection camera and the light source.

[0028] In some embodiments, the reinforcing rib forming device further comprises a control module electrically connected with the detection member and the ultrasonic assembly, respectively.

[0029] Under the condition that the detection member detects that the depth of the reinforcing rib does not meet a preset threshold, the control module is configured to adjust an output power of the ultrasonic assembly.

[0030] In this way, the depth of the reinforcing rib is conveniently controlled.

[0031] In some embodiments, the reinforcing rib forming device further comprises a cleaning member arranged above the first roller body and configured to remove impurities generated during the rolling process. In this way, the impurities generated during the rolling process can be conveniently removed.

[0032] In some embodiments, the cleaning member comprises a dust removal negative pressure cover and a negative pressure source, the opening of the dust removal negative pressure cover faces the first roller body, and the dust removal negative pressure cover is in communication with the negative pressure source through a pipeline. In this way, the dust removal negative pressure cover can remove the impurities generated during the rolling process by providing negative pressure by the negative pressure source.

[0033] In some embodiments, a detachable filter is arranged at the opening of the dust removal negative pressure cover. In this way, large-particle impurities can be filtered out to avoid blockage of the pipeline between the dust removal negative pressure cover and the negative pressure source.

[0034] The application also provides a battery production line comprising the reinforcing rib forming device according to any one of the embodiments of the application.

[0035] The above description is only a summary of the technical solutions of the application. In order to enable the technical means of the application to be more clearly understood, the following detailed description of the embodiments of the application can be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more obvious and easy to understand, the following detailed description of the embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The accompanying drawings are included only to illustrate the embodiments and are not considered a limitation of the application. Moreover, in all the drawings, the same reference numbers are used to denote the same components. In the drawings:

[0037] Figure 1 Structure schematic diagram of the reinforcing rib forming device provided by some embodiments of the application;

[0038] Figure 2 Connection structure schematic diagram of the first inclined block provided by some embodiments of the application;

[0039] Figure 3 Schematic diagram of the reinforcing rib forming device provided by some embodiments of the application from another perspective;

[0040] Figure 4 Schematic diagram of the reinforcing rib formed on the tab of the pole piece provided by some embodiments of the application.

[0041] The reference numerals in the detailed description are as follows:

[0042] 10, pole piece; 101, reinforcing rib; 11, rolling assembly; 111, first roller body; 112, second roller body; 12, driving assembly; 121, second motor; 122, second coupling; 123, bearing; 124, rolling shaft; 13, ultrasonic assembly; 14, adjusting assembly; 141, base; 142, fixing seat; 143, first motor; 144, first coupling; 145, screw rod; 146, first inclined block; 1461, first inclined surface; 147, second inclined block; 1471, second inclined surface; 1472, clamping groove; 148, connecting piece; 149, sliding rail; 15, mounting seat; 16, detecting piece; 17, cleaning piece. DETAILED DESCRIPTION

[0043] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "include" and "have" and any variations thereof used in the specification and the claims and the above description of the drawings are intended to cover the non-exclusive inclusion.

[0045] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise specifically limited.

[0046] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0048] In the description of the embodiments of the present application, the term “a plurality of” refers to two or more (including two), and similarly, “a plurality of groups” refers to two or more groups (including two groups), and “a plurality of pieces” refers to two or more pieces (including two pieces).

[0049] In the description of the embodiments of the present application, the technical terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0050] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms “mounting”, “connection”, “connection”, “fixing” and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] The manufacturing process of the power lithium battery and the energy storage battery pole piece is to coat the lithium battery slurry on the current collector to form a large roll, then pre-cut the large roll into a single film area roll, and finally cut and strip the single film area to obtain a small roll. After the cutting and stripping, the positive and negative electrodes are formed, and the pole piece is wound to form a bare battery cell.

[0052] In the production of the pole piece, the ear folding has always been a problem. The ear folding refers to the accidental bending, folding or bruising of the tab during the production of the battery (such as die cutting, winding, shell entering, welding) or subsequent use. This is a very serious problem, which directly threatens the safety and performance of the battery. It can cause the internal resistance to increase and heat. The ear folding can cause the cross-sectional area of the tab to decrease. According to Ohm's law, the smaller the cross-sectional area of the conductor, the greater the resistance. When the current passes through, the increased internal resistance will generate more Joule heat, causing the local temperature of the battery to abnormally rise. This will reduce the energy efficiency of the battery, affect the charge and discharge performance, and cause the battery to heat up more than expected during normal use. The cycle life attenuation, the continuous local overheating can accelerate the degradation of the internal chemical system of the battery, such as electrolyte decomposition, active material deactivation, etc. At the same time, the folded part may produce tiny metal fatigue and cracks. In the long-term charge and discharge cycle, due to the slight vibration of the tab with the expansion and contraction of the battery, these cracks may gradually expand, and then cause the internal resistance to further increase, forming a vicious cycle, and eventually causing the battery to fail prematurely.

[0053] In order to avoid ear folding, a reinforcing rib can be rolled on the tab by a rolling device. However, the reinforcing rib rolled on the tab by the rolling device in the related art has low stress.

[0054] Based on the above considerations, in order to solve the problem that the reinforcing rib rolled on the tab by the existing rolling device has low stress, the application provides a reinforcing rib forming device applied to the tab of a pole piece. The reinforcing rib forming device comprises a rolling assembly, a driving assembly and an ultrasonic assembly. The rolling assembly comprises a first roller body and a second roller body arranged oppositely. The driving assembly is connected with the first roller body and configured to drive the first roller body to rotate. When the tab is arranged between the first roller body and the second roller body, the ultrasonic assembly is configured to apply ultrasonic energy to the first roller body and roll a reinforcing rib on the tab.

[0055] In the technical scheme of the application, the ultrasonic assembly applies ultrasonic energy to the first roller body. The first roller body can roll a reinforcing rib on the tab under the cooperation of rotation and ultrasonic energy. Due to the high-frequency vibration of the ultrasonic wave, the metal atoms on the tab forming area can obtain additional kinetic energy when the ultrasonic wave is transmitted to the tab forming area, the dynamic recrystallization of the crystal grains occurs, the pores and micro-cracks are reduced, the yield strength of the metal is reduced by the vibration energy, the material realizes full plastic flow under smaller rolling pressure, the hardening and embrittlement caused by forced extrusion are avoided, the stress distribution in the reinforcing rib is more uniform, the overall crack resistance and deformation resistance are improved. Moreover, the ultrasonic vibration can make the metal material fill the protruding structure on the first roller body more accurately, so that the profile of the reinforcing rib is clearer and the size is more stable. When stressed, the load can be evenly dispersed to avoid the fracture caused by local stress concentration, thereby improving the corresponding stress.

[0056] According to some embodiments of the present application, Figure 1 is a structural schematic diagram of a reinforcing rib forming device in the present application. As shown in the figure, Figure 1 the present application provides a reinforcing rib forming device applied to the pole lug of a pole piece 10, which comprises a rolling assembly 11, a driving assembly 12 and an ultrasonic assembly 13. The rolling assembly 11 comprises a first roller body 111 and a second roller body 112 arranged oppositely. The driving assembly 12 is connected with the first roller body 111 and configured to drive the first roller body 111 to rotate. When the pole lug of the pole piece 10 is arranged between the first roller body 111 and the second roller body 112, the ultrasonic assembly 13 is configured to apply ultrasonic energy to the first roller body 111 and roll to form a reinforcing rib on the pole lug.

[0057] The first roller body 111 and the second roller body 112 in the embodiment can be fixed on a rack. As shown in the figure, Figure 1 the first roller body 111 is located above the second roller body 112. Meanwhile, the first roller body 111 can be a reinforcing rib roller, i.e., the surface of the first roller body 111 is provided with protrusions. The second roller body 112 can be a rolling bearing, i.e., the surface of the second roller body 112 is a smooth surface. Of course, it can be understood that the second roller body 112 can also be a reinforcing rib roller, which is not limited here.

[0058] As shown in the figure, Figure 3 the driving assembly 12 in the embodiment can comprise a second motor 121, a second coupling 122, a bearing 123 and a rolling shaft 124. The second motor 121 is connected with the rolling shaft 124 through the second coupling 122. The bearing 123 is fixed on the rolling shaft 124. The first roller body 111 is fixed on the rolling shaft 124. The bearing 123 is located between the rolling shaft 124 and the second coupling 122.

[0059] It should be noted that the structure of the above driving assembly is only an example. In other alternative schemes, other structures can also be adopted, for example, the driving assembly further comprises a rotating speed sensor, etc. The present application does not specially limit the specific structure of the driving assembly, as long as the above structure can achieve the purpose of the present application.

[0060] In the embodiment, the ultrasonic assembly 13 can be an ultrasonic handpiece. The energy output end of the ultrasonic handpiece can be directly connected with the end of the first roller body 111, which can be fixed through flanges, bolts and other connecting members. The high-frequency vibration energy generated by the ultrasonic handpiece is transmitted to the first roller body 111 through the connecting part, so that the first roller body 111 can produce ultrasonic vibration while rotating.

[0061] In the technical solution of this application embodiment, ultrasonic energy is applied to the first roller 111 by the ultrasonic component 13. Under the synergy of rotation and ultrasonic energy, the first roller 111 can roll and form a reinforcing rib 101 on the tab. When the high-frequency vibration of the ultrasonic wave is transmitted to the tab forming area, the metal atoms in the tab forming area can gain additional kinetic energy, and the grains undergo dynamic recrystallization, reducing porosity and microcracks. At the same time, the vibration energy can also reduce the yield strength of the metal, allowing the material to achieve sufficient plastic rheology under less rolling pressure, avoiding hardening and embrittlement caused by forced extrusion, making the internal stress distribution of the reinforcing rib 101 more uniform, and improving the overall crack resistance and deformation resistance. Moreover, the ultrasonic vibration can also make the metal material fill the protruding structure on the first roller 111 more accurately, making the outline of the reinforcing rib 101 clearer and the size more stable. When under force, it can evenly distribute the load, avoid fracture caused by local stress concentration, and thus improve the corresponding stress.

[0062] According to some embodiments of this application, the first roller body 111 is a reinforcing roller, and the second roller body 112 is a rolling bearing. The outer peripheral surface of the reinforcing roller is provided with a protruding structure for forming the reinforcing rib, and a gap is formed between the rolling bearing and the reinforcing roller for the electrode tab to pass through.

[0063] In this embodiment, the first roller 111 is provided with a raised structure. During use, the structure and spacing of the raised structure can be designed according to the force requirements of the electrode tabs to adapt to the strength requirements in different scenarios.

[0064] The second roller 112 uses rolling bearings. The low friction characteristics of rolling bearings can reduce the resistance when the tabs pass through, avoid scratches or wear on the tab surface, and ensure the smoothness of the rolling process.

[0065] In use, after the electrode tab is inserted between the rolling bearing and the reinforcing roller, simultaneously, the first roller 111, under the synergy of ultrasonic energy, ... Figure 4 As shown, reinforcing ribs 101 can be formed by rolling on the tabs.

[0066] According to some embodiments of this application, such as Figure 1 As shown, the reinforcing rib forming device also includes an adjustment component 14, which is connected to the second roller 112 and configured to drive the second roller 112 to move in order to adjust the distance between the second roller 112 and the first roller 111.

[0067] In this embodiment, the adjustment component 14 can be a pneumatic rod, an electric telescopic rod, etc. The specific one can be determined according to the actual situation, and this specification does not limit it in this embodiment.

[0068] In use, the second roller body 112 is moved by adjusting the adjusting assembly 14, so that the distance between the second roller body 112 and the first roller body 111 can be adjusted. Since the tab can form a reinforcing rib after passing through the first roller body 111 and the second roller body 112, the depth of the reinforcing rib formed on the tab by the protrusion on the first roller body 111 will be different when the distance between the first roller body 111 and the second roller body 112 is adjusted. In this way, the forming depth of the reinforcing rib formed on the tab by rolling can be accurately controlled to meet the differentiated needs of different battery products for the strength of the tab, thereby improving the versatility of the device.

[0069] According to some embodiments of the present application, as shown in Figure 1 The adjusting assembly 14 includes a driving member and a first inclined block 146 and a second inclined block 147, wherein the second roller body 112 is mounted on the second inclined block 147, the driving member is connected with the first inclined block 146, and the driving member is configured to move the first inclined block 146 in a first direction to drive the second inclined block 147 to move in a second direction, wherein the second direction is a direction in which the second roller body 112 approaches or moves away from the first roller body 111, and the first direction intersects the second direction.

[0070] In the present embodiment, the first direction is the X-axis direction as shown in Figure 1 , and the second direction is the Y-axis direction as shown in Figure 1 , wherein the included angle between the X-axis and the Y-axis can be 80°, 85°, 90°, etc. For the convenience of explanation, the X-axis and the Y-axis are perpendicular to each other in the following description.

[0071] The driving member in the present embodiment can be a motor, a pneumatic cylinder, an electric telescopic rod, etc., which can be determined according to actual conditions, and the present specification does not limit the same.

[0072] In the present embodiment, the driving member can be connected with the first inclined block 146 by a bolt, the second inclined block 147 is in close contact with the first inclined block 146, the second inclined block 147 can move relative to the first inclined block 146 in the Y-axis direction, and the second inclined block 147 and the first inclined block 146 can be connected together by a cooperation structure of a sliding rail and a sliding groove.

[0073] In use, the first inclined block 146 is moved relative to the second inclined block 147 in the X-axis direction by the driving member, so that the second inclined block 147 can be moved in the Y-axis direction, and since the second roller body 112 is mounted on the second inclined block 147, the distance between the second roller body 112 and the first roller body 111 can be adjusted synchronously.

[0074] Since the second inclined block 147 is in close contact with the first inclined block 146, the inclined block mating structure itself has a self-locking function. When the position of the second inclined block 147 is adjusted to the correct position, the spacing can be kept stable without additional locking components, thus preventing the second inclined block 147 from shifting during the rolling process.

[0075] According to some embodiments of this application, such as Figure 1 and combined Figure 2 As shown, the adjustment assembly 14 also includes a connector 148, and the driving component includes a base 141, a fixed seat 142, a first motor 143, and a lead screw 145. A slide rail 149 is provided on the base 141, and the side of the first inclined block 146 facing the base 141 is slidably connected to the slide rail 149. The connector 148 is configured to connect a second inclined block 147 and the base 141, and the second inclined block 147 can move relative to the connector 148 in a second direction. The first motor 143 and the fixed seat 142 are both fixed to the base 141. The output shaft of the first motor 143 is connected to the lead screw 145, and the lead screw 145 is rotatably connected to the fixed seat 142, and the lead screw 145 is drively connected to the first inclined block 146.

[0076] In this embodiment, both the fixed base 142 and the first motor 143 can be fixed to the base 141 by bolts. The first motor 143 is connected to the lead screw 145 through the first coupling 144. The two ends of the lead screw 145 are connected to the two fixed bases 142 respectively, and the lead screw 145 can rotate relative to the fixed base 142.

[0077] The first inclined block 146 has a threaded hole along the length of the lead screw 145. The threaded hole on the first inclined block 146 is engaged with the external thread on the corresponding lead screw 145. At the same time, the bottom surface of the first inclined block 146 is provided with a sliding groove, which is slidably connected to the slide rail 149.

[0078] In this embodiment, the connector 148 can be a connecting shaft, a connecting pin, etc., and is not limited here. (See reference...) Figure 2 As shown, the second inclined block 147 has a through hole along the Y-axis. The connecting piece 148 passes through the through hole from top to bottom and can be bolted to the base 141. In this embodiment, the connecting piece 148 is clearance-fitted with the through hole. A limit stop is provided above the connecting piece 148. When the second inclined block 147 moves upward relative to the connecting piece 148 along the Y-axis, after the second inclined block 147 moves to the position where it abuts against the limit stop, the second inclined block 147 cannot continue to move upward along the Y-axis due to the obstruction of the limit stop.

[0079] In use, the first motor 143 drives the screw rod 145 to rotate, and since the first inclined block 146 is threadedly connected to the screw rod 145 and the bottom surface of the first inclined block 146 is slidably connected to the slide rail 149 on the base 141 through the sliding groove, the screw rod 145 can drive the first inclined block 146 to move along the X-axis direction when the screw rod 145 rotates.

[0080] Since the second inclined block 147 is close to the first inclined block 146, the second inclined block 147 is connected to the base 141 through the connecting piece 148, and the second inclined block 147 can move along the Y-axis direction relative to the connecting piece 148, so when the first inclined block 146 moves along the X-axis direction, the first inclined block 146 can push the second inclined block 147 to move along the Y-axis direction, thereby realizing the movement of the second inclined block 147 along the Y-axis direction driven by the first inclined block 146.

[0081] According to some embodiments of the present application, as shown in Figure 1 the side of the first inclined block 146 facing the second inclined block 147 is a first inclined surface 1461, the side of the second inclined block 147 facing the first inclined block 146 is a second inclined surface 1471, and the first inclined surface 1461 and the second inclined surface 1471 are in close contact; under the condition that the first inclined surface 1461 moves along the first direction relative to the second inclined surface 1471, the second inclined block 147 moves along the second direction relative to the first inclined block 146.

[0082] The first direction and the second direction in the present embodiment can refer to the description above, which will not be repeated here.

[0083] Since the first inclined surface 1461 and the second inclined surface 1471 are in close contact, the effective transmission of force can be ensured, energy loss can be avoided, and the movement of the first inclined block 146 can be accurately converted into the adjustment of the spacing of the second roller body 112 on the second inclined block 147, thereby improving the adjustment efficiency.

[0084] According to some embodiments of the present application, as shown in Figure 1 the reinforcing rib forming device further comprises a mounting seat 15 connected to the side of the second inclined block 147 away from the first inclined block 146, and the second roller body 112 is rotatably connected to the mounting seat 15.

[0085] The mounting seat 15 in the present embodiment can be fixed to the side of the second inclined block 147 away from the first inclined block 146 by bolts, and the second roller body 112 is fixed to the mounting seat 15 by a bearing seat. The connection structure of the mounting seat 15, the second inclined block 147 and the second roller body 112 is not limited here.

[0086] The present embodiment provides the mounting seat 15 on the second inclined block 147, thereby facilitating the connection of the second roller body 112 to the second inclined block 147.

[0087] According to some embodiments of the present application, the second inclined block 147 is provided with a clamping groove 1472 on the side away from the first inclined block 146, and the mounting seat 15 is fixed in the clamping groove 1472.

[0088] The clamping groove 1472 is arranged on the second inclined block 147, so that the mounting seat 15 is conveniently fixed to the second inclined block 147.

[0089] According to some embodiments of the present application, the ultrasonic assembly 13 is an ultrasonic head, and an energy output end of the ultrasonic head is connected with the first roller body 111.

[0090] The energy output end of the ultrasonic head in the embodiment can be fixed with the end of the first roller body 111 through a flange, a bolt or other connecting member, which is not limited here.

[0091] In use, the high-frequency vibration energy generated by the ultrasonic head is transmitted to the first roller body 111 through the connecting part, so that the first roller body 111 can generate ultrasonic vibration while rotating.

[0092] According to some embodiments of the present application, as shown in Figure 1 The reinforcing rib forming device further comprises a detection member 16 arranged on the discharging side of the rolling assembly 11 and configured to detect the depth parameter of the reinforcing rib formed on the tab.

[0093] The detection member 16 in the embodiment can be a CCD visual detection device, a depth detection sensor or the like, which is not limited here.

[0094] In use, the depth parameter of the reinforcing rib formed on the tab can be conveniently detected by the detection member 16.

[0095] According to some embodiments of the present application, the detection member 16 comprises a detection camera and a light source, wherein the light source is configured to illuminate the reinforcing rib area on the tab, and the detection camera is aligned with the reinforcing rib area and configured to collect the image of the reinforcing rib and obtain the depth parameter through image analysis.

[0096] The combination structure of the detection camera and the light source is adopted in the embodiment, wherein the light source can effectively improve the image contrast, so that the detection camera can clearly capture the outline and details of the reinforcing rib, thereby improving the detection accuracy.

[0097] According to some embodiments of the present application, the reinforcing rib forming device further comprises a control module electrically connected with the detection member 16 and the ultrasonic assembly 13; and when the detection member 16 detects that the depth of the reinforcing rib does not meet the preset threshold, the control module is configured to adjust the output power of the ultrasonic assembly 13.

[0098] The control module in the embodiment can be an MCU (micro control unit), a PLC (programmable logic controller), a special control chip, or an industrial computer (such as a single-chip microcomputer or an STM32 series chip), which is not limited herein.

[0099] In use, the detection piece 16 transmits the collected rib depth data to the control module through the communication interface. The control module compares the received actual depth data with the pre-stored "preset threshold value" (such as the qualified depth range of 0.3-0.5 mm). If the actual depth is less than the preset lower limit (such as 0.2 mm, the rib is too shallow), the energy output power needs to be increased. If the actual depth is greater than the preset upper limit (such as 0.6 mm, the rib is too deep), the energy output power needs to be reduced.

[0100] At this time, the control module generates a corresponding power adjustment electrical signal according to the judgment result, and then sends the power adjustment electrical signal to the ultrasonic wave assembly 13. The ultrasonic wave assembly 13 adjusts the output power through its power drive circuit (such as the power amplification module of the ultrasonic wave generator).

[0101] When the vibration energy transmitted by the ultrasonic wave head to the first roller body 111 is enhanced, the plastic deformation of the tab during rolling will be more sufficient, so as to increase the corresponding rib depth. When the vibration energy is weakened, the deformation degree of the tab is reduced, and the corresponding rib depth is reduced. In this way, the depth of the rib can be conveniently controlled.

[0102] According to some embodiments of the present application, as shown in Figure 3 The rib forming device further includes a cleaning piece 17, which is arranged above the first roller body 111 and is configured to remove impurities generated during rolling.

[0103] The cleaning piece 17 in the embodiment can be a dust collector, which is not limited herein.

[0104] The embodiment removes the impurities generated during rolling in real time through the cleaning piece 17, so as to avoid that the impurities adhere to the protruding structure of the first roller body 111 to cause rib forming defects, or adhere to the surface of the tab to affect the subsequent assembly and conductivity.

[0105] According to some embodiments of the present application, the cleaning piece 17 includes a dust removal negative pressure cover and a negative pressure source. The opening of the dust removal negative pressure cover faces the first roller body 111, and the dust removal negative pressure cover is in communication with the negative pressure source through a pipeline.

[0106] In this way, the dust removal negative pressure cover can remove the impurities generated during rolling by providing negative pressure by the negative pressure source.

[0107] According to some embodiments of the present application, a detachable filter piece is arranged at the opening of the dust removal negative pressure cover.

[0108] The filter in the embodiment can be a filter screen, and the filter can be clamped at the opening of the dust removal negative pressure cover. In this way, large-particle impurities are filtered out through the filter, so as to avoid blockage of the pipeline between the dust removal negative pressure cover and the negative pressure source.

[0109] The application also provides a battery production line comprising the reinforcing rib forming device according to any one of the embodiments of the application.

[0110] The specific structure of the reinforcing rib forming device in the embodiment is referred to the above embodiments. Since all the technical solutions of the above embodiments are adopted in the battery production line, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and thus the detailed description is not repeated here.

[0111] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part 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 application, and they should be covered in the scope of the claims and the specification of the application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A reinforcing rib forming device applied to a tab of a pole piece, characterized by, The application relates to a roll pressing assembly for pressing a reinforcing rib on an ear of a pole piece. The roll pressing assembly comprises a first roller and a second roller arranged oppositely; A driving assembly is connected with the first roller and configured to drive the first roller to rotate; An ultrasonic assembly is configured to apply ultrasonic energy to the first roller and press the reinforcing rib on the ear when the ear is arranged between the first roller and the second roller.

2. The reinforcing bar forming apparatus of claim 1, wherein The first roller is a reinforcing rib roller, the second roller is a rolling bearing, and the reinforcing rib roller is provided with a convex structure for forming the reinforcing rib on the outer periphery of the reinforcing rib roller.

3. The reinforcing bar forming apparatus of claim 1 wherein, The rolling bearing and the reinforcing rib roller form a gap for the ear to pass through.

4. The reinforcing bar forming apparatus of claim 3, wherein An adjusting assembly is connected with the second roller and configured to drive the second roller to move so as to adjust the distance between the second roller and the first roller. The adjusting assembly comprises a driving member, a first inclined block and a second inclined block; 5. The reinforcing bar forming apparatus of claim 4, wherein The second roller is mounted on the second inclined block, the driving member is connected with the first inclined block, and the driving member is configured to drive the first inclined block to move in a first direction so that the first inclined block drives the second inclined block to move in a second direction, wherein the second direction is a direction in which the second roller approaches or moves away from the first roller, and the first direction intersects the second direction. The adjusting assembly further comprises a connecting member, and the driving member comprises a base, a fixing seat, a first motor and a lead screw; The base is provided with a sliding rail, one side of the first inclined block facing the base is slidably connected with the sliding rail, the connecting member is configured to connect the second inclined block and the base, and the second inclined block can move in the second direction relative to the connecting member; 6. A reinforcing bar forming apparatus as claimed in claim 4 or 5, wherein The first motor and the fixing seat are both fixed to the base, an output shaft of the first motor is connected with the lead screw, the lead screw is rotatably connected with the fixing seat, and the lead screw is in transmission connection with the first inclined block. One side of the first inclined block facing the second inclined block is a first inclined surface, one side of the second inclined block facing the first inclined block is a second inclined surface, and the first inclined surface is in abutment with the second inclined surface; 7. A reinforcing bar forming apparatus as claimed in claim 4 or 5 wherein, Under the condition that the first inclined surface moves in the first direction relative to the second inclined surface, the second inclined block moves in the second direction relative to the first inclined block.

8. The reinforcing bar forming apparatus of claim 7, wherein The adjusting assembly further comprises a mounting seat connected to one side of the second inclined block away from the first inclined block, and the second roller is rotatably connected with the mounting seat.

9. The reinforcing bar forming apparatus according to any one of claims 1 to 5, wherein One side of the second inclined block away from the first inclined block is provided with a clamping groove, and the mounting seat is fixed in the clamping groove.

10. The reinforcing bar forming apparatus of any one of claims 1 to 5, wherein The ultrasonic assembly is an ultrasonic handpiece, and an energy output end of the ultrasonic handpiece is connected with the first roller.

11. The reinforcing bar forming apparatus of claim 10, wherein The roll pressing assembly further comprises a detection member arranged on a discharging side of the roll pressing assembly and configured to detect a depth parameter of the reinforcing rib formed on the ear. The detection member comprises a detection camera and a light source, the light source is configured to illuminate a reinforcing rib area on the ear, and the detection camera is aligned with the reinforcing rib area and configured to collect an image of the reinforcing rib and acquire the depth parameter through image analysis.

12. The reinforcing bar forming apparatus of claim 10 wherein, The control module is electrically connected with the detection member and the ultrasonic assembly respectively; The control module is configured to adjust the output power of the ultrasonic assembly when the detection member detects that the depth of the reinforcing rib does not meet the preset threshold.

13. The reinforcing bar forming apparatus of any one of claims 1 to 5, wherein The cleaning member is arranged above the first roller body and is configured to remove impurities generated during the rolling process.

14. The reinforcing bar forming apparatus of claim 13, wherein The cleaning member comprises a dust removal negative pressure cover and a negative pressure source, the opening of the dust removal negative pressure cover faces the first roller body, and the dust removal negative pressure cover is in communication with the negative pressure source through a pipeline.

15. The reinforcing bar forming apparatus of claim 14, wherein A detachable filter is arranged at the opening of the dust removal negative pressure cover.

16. A battery production line, characterized by The reinforcing rib forming device comprises the reinforcing rib forming device according to any one of claims 1 to 15.

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