Pole piece heating device and heating equipment

Abstract

The utility model discloses a pole piece heating device. A driving assembly is used for driving a heating assembly to move to a preset heating area of a pole piece conveyed by a conveying assembly for heating treatment. The heating area is used for heating, so that the ductility of the pole piece can be remarkably improved, the problem that the tab area of the pole piece is wrinkled during rolling is effectively solved, the reject ratio of products is improved, and the production efficiency is improved. The pole piece heating equipment comprises the pole piece heating device and further comprises a control assembly, and by means of an automatic control system and an accurate mechanical structure design, the equipment is expected to effectively reduce labor cost, reduce labor intensity, improve operation safety and remarkably improve production efficiency and product quality. Therefore, automation of the production process is achieved, and transformation of the whole industry to intelligent production is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, and includes a pole piece heating device and heating equipment. Background Art

[0002] With the rapid development of society and the continuous advancement of science and technology, the demand for electronic devices, especially mobile communication devices and electric vehicles, is growing, which has directly promoted the rapid development of lithium battery technology. Lithium batteries have become indispensable energy storage devices in these applications due to their high energy density, long cycle life and good safety performance. However, as users' requirements for the battery life of electronic devices increase, existing lithium battery technology faces certain challenges, especially in improving energy density to alleviate users' battery life anxiety.

[0003] In order to meet the demand for high energy density, the battery manufacturing industry is moving towards thicker coatings on battery pole sheet materials, which means that in the production process of battery pole sheets, the required density after rolling must also be higher. However, in the process of increasing the rolling pressure to achieve the required density, a significant problem is that the uncoated pole sheet tab area is prone to wrinkling, and this phenomenon becomes more frequent as the rolling pressure increases. The wrinkles in the tab area not only affect the appearance quality of the battery pole sheet, but may also affect the performance and life of the battery, thereby greatly reducing the production yield of the battery pole sheet. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the pole piece heating device and heating equipment of the utility model can significantly improve the ductility of the uncoated coil by independently heating the pole ear area, thereby effectively solving the wrinkle problem.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A pole piece heating device, comprising:

[0007] A conveying assembly, used for conveying pole pieces;

[0008] A plurality of heating components, used for heating the pole piece;

[0009] A driving component is connected to the plurality of heating components in a transmission manner and is used to drive the plurality of heating components to move to the heating area of ​​the pole piece so that the plurality of heating components heat the heating area of ​​the pole piece.

[0010] Further, the heating assembly comprises: a heating frame, a heating part arranged on the heating frame, and a slide seat arranged at the bottom of the heating frame, wherein the heating part has a heating head;

[0011] A first track is provided along the width direction of the pole piece. A sliding seat is provided at the bottom of the heating assembly, and the sliding seat is slidably clamped with the first track;

[0012] A first connecting portion is provided on the heating rack, and the first connecting portion can be connected to or disconnected from the driving assembly;

[0013] When the first connecting portion is connected to the driving assembly, the driving assembly can drive the heating assembly to reciprocate along the first track; when the heating assembly moves to the heating area of the pole piece, the first connecting portion is disconnected from the driving assembly.

[0014] Further, the driving assembly includes: a motor and a transmission mechanism, and the motor is used to drive the transmission mechanism to drive the heating assembly to move;

[0015] The transmission mechanism includes: a synchronous pulley, a synchronous belt or a chain, and the motor is used to drive the synchronous pulley to rotate so that the synchronous pulley drives the synchronous belt or the chain to move;

[0016] The first connecting portion includes a clamping jaw and a clamping cylinder, and the clamping cylinder is used to drive the clamping jaw to clamp or loosen the synchronous belt or the chain.

[0017] Further, the heating assembly further includes a first fixing portion provided on the heating rack, and the first fixing portion is used to fix the heating assembly without deviation.

[0018] Further, a first track is provided along the width direction of the pole piece. A sliding seat is provided at the bottom of the heating assembly, and the sliding seat is slidably clamped with the first track. The driving assembly can drive the heating assembly to reciprocate along the first track;

[0019] The first fixing portion includes a first fixing cylinder and a fixing block provided at the output end of the first fixing cylinder. The first fixing cylinder can drive the fixing block to move along the plane where the first track is located;

[0020] When the first fixing cylinder drives the fixing block to abut against the fixing surface of the first track, a mutual acting force is generated, which can clamp the sliding seat and the first track tightly.

[0021] Further, the heating assembly further includes a temperature control portion provided on the heating rack, and the temperature control portion is used to detect the temperature of the heating area after heating.

[0022] Further, a positioning assembly is further included, which has a second connecting portion, a second fixing portion and a sensing portion;

[0023] The second connecting portion is used to be detachably connected to the driving assembly, and the second fixing portion is used to fix the positioning assembly without deviation;

[0024] The induction part is used to locate the position of the heating component.

[0025] Further, a second track is provided along the width direction of the pole piece. When the second connecting part is connected to the driving component, the driving component can drive the positioning component to reciprocate along the second track.

[0026] Further, the conveying component includes: a roller for supporting and conveying the pole piece and a mounting seat for fixedly installing the roller.

[0027] A pole piece heating device includes the above-mentioned pole piece heating apparatus, and further includes a control component; the control component is electrically connected to the conveying component, the heating component, and the driving component.

[0028] The beneficial effects of the present utility model are as follows:

[0029] In a pole piece heating apparatus of the present utility model, a driving component drives a heating component to move to a predetermined heating area of a pole piece being conveyed by a conveying component for heating treatment. By independently heating the tab area, the ductility of the pole piece can be significantly improved, thereby effectively solving the problem of wrinkles in the tab area of the pole piece during rolling, improving the defective rate of products, and enhancing production efficiency. This method is particularly applicable to battery pole pieces with zebra coating, that is, those with multiple tab areas and coating areas, because different areas of these pole pieces require different degrees of heating to achieve the best physical properties and production effects. And a pole piece heating device of the present utility model is also provided with a control component. Through an automatic control system and precise mechanical structure design, this device is expected to effectively reduce labor costs, reduce labor intensity, improve operation safety, and significantly enhance production efficiency and product quality. Thus, the automation of the production process is realized, promoting the transformation of the entire industry towards intelligent production. Description of the Drawings

[0030] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0031] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0032] Figure 2 is Figure 1 an enlarged schematic diagram of part A in

[0033] Figure 3 is Figure 1 an enlarged schematic diagram of part B in

[0034] Figure 4 is a side schematic diagram of the heating component of the present utility model;

[0035] Figure 5It is a front schematic view of the positioning component of the present utility model.

[0036] Among them,

[0037] 100, conveying component; 110, over-roller;

[0038] 200, heating component; 210, heating rack; 220, heating part; 230, first connecting part; 240, first fixing part; 250, temperature control part;

[0039] 300, driving component; 310, motor; 320, transmission mechanism; 321, synchronous pulley; 322, synchronous belt;

[0040] 400, positioning component; 410, second connecting part; 420, second fixing part; 430, sensing part;

[0041] 500, first track;

[0042] 600, second track;

[0043] 700, control component. Specific embodiments

[0044] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts all belong to the scope of protection of the present utility model. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the creation of the present utility model can be combined interactively without conflicting with each other.

[0045] In the production of battery electrode sheets, there are often electrode sheets with zebra coating, such as models with four tab areas and three coating areas, and each tab area needs to be heated independently. This method significantly improves the ductility of the coil, effectively prevents wrinkles from occurring in the tab area, thereby reducing the defect rate and improving production efficiency.

[0046] A kind of electrode sheet heating device of the present utility model is used to independently heat each tab area to solve the problem that in the prior art, under the increasing rolling pressure, the tab area of the uncoated electrode sheet wrinkles.

[0047] Refer to Figure 1, a pole piece heating device, comprising: a conveying assembly 100, a heating assembly 200 and a driving assembly 300. The conveying assembly 100 is used for conveying the pole piece; a plurality of heating assemblies 200 are used for heating the pole piece; the driving assembly 300 is in transmission connection with the plurality of heating assemblies 200 and is used for driving the plurality of heating assemblies 200 to move to the heating area of the pole piece so that the plurality of heating assemblies heat the heating area of the pole piece.

[0048] Referring to Figure 1 , the conveying assembly 100 includes a roller 110 for supporting and conveying the pole piece and a mounting seat (not shown in the figure) for fixedly mounting the roller 110. The roller 110 can ensure that the pole piece moves smoothly along a predetermined path, and the pole piece has a predetermined heating area that needs to be precisely heated during the heating process. It can be understood that the predetermined heating area of the pole piece is the tab area of the pole piece. By independently heating the tab area, the problem of the tab area wrinkling during the rolling process can be effectively prevented as the rolling pressure continuously increases.

[0049] Referring to Figure 1 , 3 , 4, the heating assembly 200 includes at least one heating unit, and each heating unit is composed of a heating frame 210 and a heating part 220 provided on the heating frame 210. The heating part 220 has a heating head for heating the predetermined heating area of the pole piece. In addition, a first connecting part 230 is provided on the heating frame 210 for connecting with the driving assembly 300. It should be noted that the pole pieces coated by zebra coating have various models. Therefore, when heating pole pieces of different models, the position and quantity of the heating units need to be adaptively changed. The driving assembly 300 can drive the heating unit to move to the corresponding position through the first connecting part 230 to heat the predetermined heating area of the pole piece.

[0050] The driving assembly 300 includes a motor 310 and a transmission mechanism 320. The motor 310 is in transmission connection with the transmission mechanism 320, and the first connecting part 230 can be fixedly connected with the transmission mechanism 320, so that the heating assembly 200 is driven to move along the conveying path by the motor 310. Among them, the motor 310 is preferably a servo motor 310, and the transmission mechanism 320 can select transmission methods such as chain drive, belt drive, worm and worm gear drive, and screw drive, preferably belt drive. So that the heating assembly 200 can precisely heat the predetermined heating area of the pole piece.

[0051] The heating unit includes: a heating rack 210 and a heating part 220 disposed on the heating rack 210. The heating part 220 has a heating head, where the heating head is used to generate heat and heat the heating area. Here, no specific limitation is imposed on the heating head, as long as it can meet the heating requirements. Preferably, in this case, it is a coil heating head, and the heating rack 210 mounts the heating head; a first connecting part 230 for connecting with the driving assembly 300 is provided on the heating rack 210. It should be noted that when the position of the heating unit needs to be adjusted, the first connecting part 230 is connected to the transmission mechanism 320 of the driving assembly 300, and the heating unit is moved to the corresponding position through the driving assembly 300; after the heating unit is moved to the corresponding position, the first connecting part 230 is disconnected from the transmission mechanism 320. Specifically, the first connecting part 230 includes a clamping jaw and a clamping cylinder. The clamping cylinder is used to drive the clamping jaw to clamp or loosen a synchronous belt or a chain. The first connecting part 230 is preferably a clamping jaw, and the opening or clamping of the clamping jaw is controlled by the clamping cylinder. The transmission mechanism 320 is a belt drive. During use, the clamping jaw of the heating unit can clamp the belt, be transmitted to a specific position through the belt, and then the clamping jaw opens to disconnect the transmission with the belt.

[0052] In some embodiments, continue to refer to Figure 1 、 3, 4, the heating assembly 200 further includes a first fixing portion 240 disposed on the heating rack 210, and the first fixing portion 240 is used to fix the heating assembly 200 without deviation. It can be understood that when the heating assembly 200 is moved to the heating position by the driving assembly 300, in order to improve the stability during heating, the heating assembly 200 needs to be fixed. In some embodiments, a first track 500 is provided along the driving direction of the driving assembly 300, where the driving direction is the width direction of the pole piece, and the driving assembly 300 can drive the heating assembly 200 to reciprocate along the first track 500. Specifically, a first sliding seat cooperating with the first track 500 is provided at the bottom of the heating unit. The first track 500 is engaged with the first sliding seat. The first fixing portion 240 includes a first fixing cylinder and a fixing block disposed at the output end of the first fixing cylinder. The first fixing cylinder can drive the fixing block to move along the plane where the first track 500 is located. When the first fixing cylinder drives the fixing block to abut against the fixing surface of the first track 500, a mutual acting force is generated, which can cause the sliding seat to be clamped with the first track 500. That is to say, the first fixing cylinder is disposed on the heating rack 210 along a direction perpendicular to the first track 500. When the first fixing cylinder is started, the output end of the cylinder moves towards the direction of the first track 500 and abuts against the fixing surface of the first track 500, so that the first sliding seat at the bottom of the heating unit abuts tightly against the first track 500, and the heating unit is fixed at a specific heating position. During heating, the heating unit will not shake, thereby improving the stability of heating. Among them, the material of the fixing block can be polyurethane or rubber. Of course, it can also be other materials with similar properties, which are not limited here.

[0053] In some embodiments, the heating assembly 200 further includes a temperature control portion 250 disposed on the heating rack 210, and the temperature control portion 250 is used to detect the temperature of the heating area after heating. It should be noted that the heating area of the pole piece needs to be heated to a preset temperature, and the temperature control portion 250 can detect whether the temperature of the heating area is within the preset temperature range. Specifically, the temperature control portion 250 is a temperature sensor.

[0054] In some embodiments, referring to Figure 1 , 2, 5, the pole piece heating device of the present utility model further includes a positioning component 400, which is used to determine the positions of the heating units in the heating component 200. After determining the specific position information, the driving component 300 is used to move each heating unit to a predetermined position. The positioning component 400 has a second connecting portion 410, a second fixing portion 420 and a sensing portion 430; the second connecting portion 410 is used to connect with the driving component 300, and the second fixing portion 420 is used to fix the positioning component 400 without deviation; among them, the second connecting portion 410 and the first connecting portion 230 have the same functions and roles, and the second fixing portion 420 and the first fixing portion 240 have the same functions and roles. In some specific embodiments, the second connecting portion 410 and the first connecting portion 230 adopt the same structure, that is, both are cylinder grippers, and the sizes of the cylinder grippers of the two are set according to specific requirements. The second fixing portion 420 and the first fixing portion 240 are fixed by fixing cylinders, and the fixing cylinders of the two are set according to specific requirements. The sensing portion 430 is used to locate the position of the heating component 200. In some specific embodiments, it further includes proximity switches provided at two end positions of the stroke of the driving component 300, and the proximity switches are used to determine that the positioning component 400 is in the initial position, and the photoelectric sensor is used to scan and record the positions of the heating units in the heating component 200. During detection, the second connecting portion 410 is connected to the driving component 300, and the driving component 300 drives the positioning component 400 to move to the proximity switch to record the initial position. Then, starting from this initial position, the driving component 300 drives the positioning component 400 to scan and record the positions of the heating units, and after the scanning is completed, the driving component 300 brings the positioning component 400 back to the initial position and fixes it through the second fixing portion 420.

[0055] In some embodiments, referring to Figure 1 , a second track 600 is provided along the width direction of the pole piece, and the driving component 300 can drive the positioning component 400 to reciprocate along the second track 600. It can be understood that a second sliding seat is provided on the positioning component 400, and the second sliding seat is clamped with the second track 600. The clamping method of the second sliding seat and the second track 600 is the same as that of the first sliding seat and the first track 500. The second fixing portion 420 is a second fixing cylinder, and the second fixing cylinder is arranged in a direction perpendicular to the second track 600. When the second fixing cylinder is started, the output end of the cylinder moves towards the second track 600 and abuts against the fixing surface of the second track 600, so that the second sliding seat of the positioning component 400 abuts tightly against the second track 600, and the positioning component 400 is fixed.

[0056] In some embodiments, the transmission mechanism 320 is a belt transmission, including: a synchronous wheel 321 and a synchronous belt 322. The motor 310 is used to drive the synchronous wheel 321 to rotate, so that the synchronous wheel 321 drives the synchronous belt 322 to move synchronously. Specifically, there are two synchronous wheels 321, one of which is connected to the motor 310, and the other is a driven wheel. The synchronous belt 322 is sleeved on the synchronous wheel 321 and can move synchronously with the synchronous wheel 321.

[0057] In some embodiments, the conveying assembly 100 includes: a roller 110 for supporting and conveying the pole piece and a mounting base for fixing the roller 110. The roller 110 can ensure that the pole piece moves smoothly along a predetermined path. In some embodiments, the mounting base has the function of adjusting the height, that is, the height of the roller 110 can be adjusted by adjusting the mounting base. This function can be used in some specific working conditions, such as when the pole piece is offset during transmission. In this case, it is necessary to check the height of both sides of the roller 110 and solve the problem of pole piece offset by adjusting the mounting base.

[0058] In some embodiments, reference Figure 1 , and further includes a vertical plate. The vertical plate includes a first vertical plate and a second vertical plate, wherein the transmission assembly 100, the heating assembly 200 and the driving assembly 300 are all arranged between the first vertical plate and the second vertical plate. Specifically, a plurality of fixing rods are arranged between the first vertical plate and the second vertical plate, wherein the first track 500 and the second track 600 are respectively fixedly installed on the fixing rods.

[0059] Reference Figure 1 The utility model also proposes a pole piece heating device, including the pole piece heating device mentioned above, and also includes a control component 700; the control component 700 is electrically connected to the conveying component 100, the heating component 200 and the driving component 300. The control component 700 can control the conveying component 100, the heating component 200 and the driving component 300 to perform automatic operation according to the preset parameter information. Among them, through the control of the control component 700, the heating component 200 can ensure the heating efficiency and uniformity; the conveying component 100 can ensure the stability and speed control of the pole piece when the material is moving; the driving component 300 can accurately drive the heating component 200 to reach the designated area. Furthermore, the control component 700 is also electrically connected to the positioning component 400, and the positioning data fed back by the positioning component 400 further improves the accuracy of the driving component 300 driving the heating component 200 to reach the designated area. The control component 700 is electrically connected to the proximity switch to control the positioning component 400 to scan and record the initial position. The control component 700 may be a programmable logic controller (PLC) or a microcontroller (such as Arduino, Raspberry Pi, etc.).

[0060] In some embodiments, a pole piece heating device further includes a touch screen, which is used to input parameters and instruct the controller to perform automated operations. Additionally, the control component 700 can be integrated with the touch screen in one space, which can reduce space occupation.

[0061] A specific embodiment is used to illustrate the present utility model.

[0062] First, input the width size of the zebra coating through the touch screen and control it through the PLC.

[0063] Next, the PLC controls the photoelectric sensor for positioning, and the driving component 300 drives the positioning component 400 for positioning to determine the positions of the heating units in the heating component 200. In this embodiment, the number of heating units is 4. Specifically: the PLC controls the cylinder gripper of the positioning component 400 to clamp the synchronous belt 322 and the fixing cylinder contracts, the servo motor 310 rotates and drives the synchronous belt 322 to rotate and further drives the photoelectric sensor to approach the proximity switch for scanning and recording the initial position. Subsequently, the synchronous belt 322 drives the photoelectric sensor to move and record the initial positions of the 4 heating units one by one. After the photoelectric sensor finishes recording, it returns to the starting point, the cylinder gripper releases the synchronous belt 322, and the positioning cylinder is started to fix the positioning component 400.

[0064] Next, the driving component 300 drives the heating unit to the positioning position. Specifically: the PLC controls the cylinder gripper of the heating unit to clamp the synchronous belt 322 and the fixing cylinder contracts, the servo motor 310 rotates and drives the synchronous belt 322 to rotate and further drives the heating unit to be adjusted from the initial position to the heating position. Subsequently, the cylinder gripper releases the synchronous belt 322, and the positioning cylinder is started to fix the positioning component 400. It should be noted that each heating unit needs to be adjusted separately. After completing the position adjustment of one heating component 200, the position adjustment work of the next heating component 200 is carried out.

[0065] Finally, the PLC controls the heating unit to start heating the heating area of the pole piece.

[0066] When it is necessary to heat pole pieces of different models, according to the specific data information of the pole piece, the above steps can be repeated.

[0067] The above is a specific description of the preferred embodiment of the present utility model, but the present utility model is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A pole piece heating device, characterized in that: include: A conveying assembly, used for conveying pole pieces; A plurality of heating components, used for heating the pole piece; A driving component is connected to the plurality of heating components in a transmission manner and is used to drive the plurality of heating components to move to the heating area of ​​the pole piece so that the plurality of heating components heat the heating area of ​​the pole piece.

2. The pole piece heating device according to claim 1, characterized in that: The heating assembly comprises: a heating frame, a heating part arranged on the heating frame, and a slide seat arranged at the bottom of the heating frame, wherein the heating part has a heating head; A first track is provided along the width direction of the pole piece, a slide seat is provided at the bottom of the heating component, and the slide seat is slidably engaged with the first track; The heating frame is provided with a first connecting portion, and the first connecting portion can be connected to or disconnected from the driving assembly; When the first connecting portion is connected to the driving component, the driving component can drive the heating component to reciprocate along the first track; when the heating component moves to the heating area of ​​the pole piece, the first connecting portion is disconnected from the driving component.

3. The pole piece heating device according to claim 2, characterized in that: The driving assembly comprises: a motor and a transmission mechanism, wherein the motor is used to drive the transmission mechanism to drive the heating assembly to move; The transmission mechanism includes: a synchronous wheel, a synchronous belt or a chain, and the motor is used to drive the synchronous wheel to rotate, so that the synchronous wheel drives the synchronous belt or chain to move; The first connecting part includes a clamping claw and a clamping cylinder, and the clamping cylinder is used to drive the clamping claw to clamp or release the synchronous belt or chain.

4. The pole piece heating device according to claim 2, characterized in that: The heating component further comprises a first fixing portion disposed on the heating frame, wherein the first fixing portion is used to fix the heating component so as not to deviate.

5. The pole piece heating device according to claim 4, characterized in that: The first fixing part includes a first fixing cylinder and a fixing block arranged at an output end of the first fixing cylinder, and the first fixing cylinder can drive the fixing block to approach or move away from the first track; When the first fixing cylinder drives the fixing block to abut against the fixing surface of the first rail, an interaction force is generated, so that the sliding seat and the first rail are clamped.

6. The pole piece heating device according to claim 2, characterized in that: The heating assembly further comprises a temperature control unit disposed on the heating frame, and the temperature control unit is used to detect the temperature of the heating zone after heating.

7. The pole piece heating device according to claim 1, characterized in that: Also included is a positioning assembly having a second connecting portion, a second fixing portion and a sensing portion; The second connecting portion is used for detachably connecting with the driving assembly, and the second fixing portion is used for fixing the positioning assembly so as not to deviate; The sensing portion is used to locate the position of the heating component.

8. The pole piece heating device according to claim 7, characterized in that: A second track is provided along the width direction of the driving assembly. When the second connecting portion is connected to the driving assembly, the driving assembly can drive the positioning assembly to reciprocate along the second track.

9. The pole piece heating device according to claim 1, characterized in that: The conveying assembly includes: a roller for supporting and conveying the pole piece and a mounting seat for fixing the roller.

10. A pole piece heating device, characterized in that: The pole piece heating equipment comprises the pole piece heating device according to any one of claims 1 to 9, and further comprises a control component; the control component is electrically connected to the transmission component, the heating component and the driving component.

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