CN211017294U - Tension control device and square power electric core winding machine - Google Patents
Tension control device and square power electric core winding machine Download PDFInfo
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- CN211017294U CN211017294U CN201922487334.7U CN201922487334U CN211017294U CN 211017294 U CN211017294 U CN 211017294U CN 201922487334 U CN201922487334 U CN 201922487334U CN 211017294 U CN211017294 U CN 211017294U
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- driving roller
- tension control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a tension control device and square power electricity core winder, tension control device includes the mount pad, the tension detector, linear electric motor, the sliding seat, second driving roller and third driving roller, be provided with the guide rail on the mount pad, the tension detector is located the one end of guide rail, the sense terminal of tension detector is equipped with first driving roller, linear electric motor includes stator and active cell, the stator is installed on the mount pad and is extended along the guide rail, the active cell sets up on the stator along the extending direction slidable of stator, sliding seat and active cell fixed connection, the sliding seat is connected with guide rail slidable, the second driving roller is installed on the sliding seat, the second driving roller is on a parallel with first driving roller, the third driving roller is installed on the sliding seat, the third driving roller is on a parallel with first driving roller. And a square power electric core winder provided with the tension control device. The tension control device and the square power electric core winding machine have the advantages of high response speed and high tension control precision on materials.
Description
Technical Field
The utility model belongs to the technical field of battery production facility technique and specifically relates to a tension control device and be provided with this tension control device's square power electricity core winder is related to.
Background
The lithium ion battery is a high and new technology product, is also a novel environment-friendly battery with high capacity and long service life, and is mainly used in various fields such as electric bicycles, electric automobiles, electric motorcycles, electric tools, solar photovoltaic and wind power generation energy storage systems, portable mobile power supplies, notebook computers, electric tools, mine safety equipment, digital products and the like.
In the technical field of battery electric core manufacturing, including the manufacturing procedure of winding pole pieces and diaphragms to form a bare electric core through electric core winding equipment, in the winding process of the pole pieces and the diaphragms, strict tension control needs to be performed on the pole pieces and the diaphragms. Because, at the pole piece, the diaphragm winding in-process, the radius of electric core is along with the increase of coiling time and slowly grow, and under the unchangeable condition of book needle rotational speed, the linear velocity of coiling can be faster and faster, cause the tension increase of pole piece, diaphragm, can adopt tension controlling means to come the tension of real-time detection pole piece or diaphragm usually, and correct the tension of pole piece or diaphragm, make the tension homoenergetic of pole piece and diaphragm in the electric core winding in-process can be stabilized near the setting value, reduce the tension fluctuation of pole piece or diaphragm, when guaranteeing electric core winding quality, prevent that pole piece and/or diaphragm from appearing the fracture. However, the conventional tension control device has the problem of action lag, so that the tension of a pole piece and/or a diaphragm is unstable in the high-speed winding process, and the problems of large or small outer diameter, excessive roundness and the like of a wound battery cell are caused.
Disclosure of Invention
In order to solve the above problems, the main object of the present invention is to provide a tension control device with fast response speed, high precision of tension control for materials and small volume.
Another object of the present invention is to provide an electric core winder provided with the tension control device.
In order to realize the utility model discloses a main objective, the utility model provides a tension control device, including mount pad and tension detector, be provided with the guide rail on the mount pad, tension detector is located the one end of guide rail, tension detector's sense terminal is provided with first driving roller, wherein, tension control device still includes linear electric motor, the sliding seat, second driving roller and third driving roller, linear electric motor includes stator and active cell, the stator is installed on the mount pad and is extended along the guide rail, the active cell sets up on the stator along the extending direction slidable of stator, sliding seat and active cell fixed connection, sliding seat and guide rail slidable ground are connected, the second driving roller is installed on the sliding seat, the second driving roller is on a parallel with first driving roller, the third driving roller is installed on the sliding seat, the third driving roller is on a parallel with first driving roller.
Therefore, the linear motor is adopted to directly drive the sliding seat to slide, the transmission clearance between the linear motor and the sliding seat is reduced, the sliding response of the sliding seat is faster, and the energy loss in the transmission process is less. And linear electric motor has the advantage that response speed is fast, the motion is steady, makes it when the drive sliding seat slides, can enough guarantee the response speed of sliding seat, can make the more steady of slip of sliding seat again, guarantees the detection precision of tension detector, avoids appearing the undulant problem of tension in the tension accommodation process simultaneously to the diameter of the electric core of assurance coiling can accord with the production requirement, and prevents that the circularity of the electric core of coiling from exceeding standard.
Preferably, the guide rail is a cross roller guide rail.
Therefore, the guide rail adopts the crossed roller guide rail, so that the guide rail has higher linearity, the moving precision of the sliding seat is ensured, the detection precision of the tension detector is ensured, meanwhile, the vibration generated when the sliding seat slides on the guide rail can be reduced, the tension fluctuation generated in the process of tension adjustment of the material is reduced, and the stability of the tension of the material is ensured. In addition, the cross roller guide rail can effectively reduce the friction force applied to the sliding seat in the sliding process and reduce the static friction force applied to the sliding seat in the sliding starting process.
Another preferred scheme is that, in the projection on the cross section of the first driving roller, a first shortest internal common tangent line segment is arranged between the projection of the first driving roller and the projection of the second driving roller, a second shortest internal common tangent line segment is arranged between the projection of the first driving roller and the projection of the third driving roller, and the length of the first shortest internal common tangent line segment is equal to the length of the second shortest internal common tangent line segment.
It is from top to bottom visible, through the position setting to first driving roller, second driving roller and third driving roller for the material atress is stable when first driving roller, second driving roller and third driving roller, reduces the tension fluctuation of material, and guarantees tension detector's detection precision.
In a further aspect, the first shortest internal common tangent line segment is parallel to the second shortest internal common tangent line segment.
In a further embodiment, the first shortest internal common tangent line segment is parallel to the guide rail.
Therefore, through the design, when the material passes through the first transmission roller, the inlet end and the outlet end of the material can be kept parallel, so that the tension value measured by the tension detector is more accurate.
According to a further scheme, the sliding seat is provided with a sensing piece, the tension control device further comprises a first position sensor and a second position sensor, the first position sensor and the second position sensor are distributed along the extending direction of the guide rail, and the sensing piece moves between the detection end of the first position sensor and the detection end of the second position sensor.
It can be seen from above that, can ground the slip extreme position of sliding seat through first position sensor, second position sensor and response piece and detect and control to guarantee tension control device to material tension control's stability and reliability.
In a further aspect, the tension control device further includes a third position sensor, the third position sensor is mounted on the mounting base, and the third position sensor is located between the first position sensor and the second position sensor.
As can be seen from the above, the third position sensor is used to determine the origin of the sliding seat, so that each time the tension adjustment has the same reference value, thereby ensuring the production quality of the cells in the same batch.
According to a further scheme, a first limiting block and a second limiting block are arranged on the mounting seat, the first limiting block is located at the first end of the guide rail, the second limiting block is located at the second end of the guide rail, the sliding seat moves between the first limiting block and the second limiting block, and the first position sensor and the second position sensor are located between the first limiting block and the second limiting block.
It is from top to bottom visible, first stopper and second stopper are used for spacing the slip of sliding seat, prevent that the sliding seat from deviating from the mount pad.
According to a further scheme, the second transmission roller comprises a first rotating shaft, a first roller and a first bearing, the first rotating shaft is fixedly installed on the sliding seat, an inner ring of the first bearing is sleeved on the first rotating shaft, an outer ring of the first bearing is embedded in the first roller, the third transmission roller comprises a second rotating shaft, a second roller and a second bearing, the second rotating shaft is fixedly installed on the sliding seat, an inner ring of the second bearing is sleeved on the second rotating shaft, and an outer ring of the second bearing is embedded in the second roller.
It is from top to bottom seen that, the structural design of second driving roller and third driving roller can reduce the frictional force that the material received when tension control device passed through, both avoided causing the influence to the coiling of electricity core, guaranteed tension control device again to material tension regulation's stability and reliability.
In order to realize the utility model discloses a still another purpose, the utility model provides a square power electricity core winder, including the controller, wherein, square power electricity core winder still includes tension control device, and tension control device is connected with the controller electricity, and tension control device is last tension control device.
Therefore, the square power electric core winding machine provided with the tension control device can stabilize the tension of the pole piece and the diaphragm near a set value in the winding process, reduce the tension fluctuation of the pole piece and the diaphragm, ensure that the tension of the pole piece and/or the diaphragm can be kept stable in the high-speed winding process, and prevent the problems of overlarge or small outer diameter, excessive roundness and the like of the wound electric core.
Drawings
Fig. 1 is a structural view of an embodiment of the tension control device of the present invention.
Fig. 2 is a first embodiment of the tension control device of the present invention with some components omitted.
Fig. 3 is a second structural view of the tension control device of the present invention, with some components omitted.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Tension control device embodiment:
referring to fig. 1 to 3, the tension control device 100 includes a mount 1, a tension detector 2, a linear motor 3, a sliding base 4, a second driving roller 5, a third driving roller 6, a first position sensor 71, a second position sensor 72, and a third position sensor 73.
The mounting base 1 is provided with a guide rail 11, and the sliding base 4 is connected with the guide rail 11 in a sliding way along the extending direction of the guide rail 11. The guide rail 11 preferably adopts a cross roller guide rail, and the cross roller guide rail has the advantage of high linearity, so that when the sliding seat 4 moves relative to the guide rail 11, the sliding seat can have high moving precision, thereby ensuring the detection precision of the tension detector 2, simultaneously reducing the vibration generated when the sliding seat 4 slides on the guide rail 11, reducing the tension fluctuation generated in the process of tension adjustment of materials (pole pieces or diaphragms), and ensuring the stability of the tension of the pole pieces and diaphragms in the process of winding the battery core. In addition, the crossed roller guide rail can also effectively reduce the friction force applied to the sliding seat 4 in the sliding process and reduce the static friction force applied to the sliding seat 4 in the sliding starting process.
The tension detector 2 is arranged at one end of the guide rail 11, a first driving roller 21 is arranged at a detection end of the tension detector 2, the first driving roller 21 is used for contacting with a pole piece or a diaphragm passing through the tension control device 100, so that the tension detector 2 detects the tension of the pole piece or the diaphragm through the cooperation among the first driving roller 21, the second driving roller 5 and the third driving roller 6, and meanwhile, the tension of the pole piece or the diaphragm is adjusted by combining the linear motor 3 and the sliding seat 4.
Specifically, the linear motor 3 includes a stator 31 and a mover 32. The stator 31 is mounted on the mounting base 1, and the stator 31 extends and is distributed along the extending direction of the guide rail 11. The sliding seat 4 is fixedly connected with the mover 32, the mover 32 is disposed on the stator 31, and the mover 32 slides along the extending direction of the stator 31 by the cooperation between the stator 31 and the mover 32, i.e. the mover 32 slides along the extending direction of the guide rail 11, so that the mover 32 drives the sliding seat 4 thereon to slide along the extending direction of the guide rail 11.
The second driving roller 5 is installed on the sliding seat 4, and the second driving roller 5 is parallel to the first driving roller 21. The third driving roller 6 is installed on the sliding seat 4, and the third driving roller 6 is parallel to the first driving roller 21.
Preferably, the second driving roller 5 includes a first rotating shaft, a first roller and a first bearing, the first rotating shaft is fixedly mounted on the sliding seat 4, an inner ring of the first bearing is sleeved on the first rotating shaft, an outer ring of the first bearing is embedded in the first roller, the first roller is made of aluminum alloy, the first roller is used for contacting with a pole piece or a diaphragm, and through the structural design of the second driving roller 5, the friction force applied when the pole piece or the diaphragm passes through the tension control device 100 can be reduced.
The third driving roller 6 comprises a second rotating shaft, a second roller and a second bearing, the second rotating shaft is fixedly installed on the sliding seat 4, the inner ring of the second bearing is sleeved on the second rotating shaft, the appearance of the second bearing is embedded in the second roller, the second roller is made of aluminum alloy, and the second roller is also used for being in contact with a pole piece or a diaphragm. Similarly, the friction force applied to the pole piece or the diaphragm when the pole piece or the diaphragm passes through the tension control device 100 can be reduced by the structural design of the third driving roller 6.
Furthermore, as shown in fig. 1, in the projection on the cross section of the first driving roller 21, there is a first shortest internal common tangent line segment L1 between the projection of the first driving roller 21 and the projection of the second driving roller 5, and there is a second shortest internal common tangent line segment L2 between the projection of the first driving roller 21 and the projection of the third driving roller 6, wherein the length of the first shortest internal common tangent line segment L1 is preferably equal to the second shortest internal common tangent line segment L2, so that the length of the pole piece or the diaphragm passing between the first driving roller 21 and the second driving roller 5 is equal to the length of the pole piece or the diaphragm passing between the first driving roller 21 and the third driving roller 6, so as to ensure that the stress of the pole piece or the diaphragm between the first driving roller 21 and the second pole piece driving roller 5 is equal to the stress of the pole piece or the diaphragm passing between the first driving roller 21 and the third driving roller 6, and ensure the stable stress of the pole piece or the diaphragm passing through the first driving roller 21, the second driving roller 5 and the third driving roller 6, reduce the tension detector itself, and also ensure the detection precision of the tension detector 2.
Further, the first shortest inner common tangent line segment L1 is parallel to the second shortest inner common tangent line segment L2, and the first shortest inner common tangent line segment L1 and the second shortest inner common tangent line segment L2 are both parallel to the guide rail 11, and by this design, the entrance end and the exit end of the pole piece or the diaphragm can be kept parallel when passing through the first driving roller 21, that is, the included angle formed between the pole pieces in the movement process is fixed (parallel), so that the tension output by the linear motor and the detected tension are in a simple multiple relationship, specifically, the tension value of the pole piece or the diaphragm measured by the tension detector 2 is closer to twice the actual tension value, that is, assuming that the tension of the pole piece is 1 newton, the force borne by the linear motor is 2 newtons, so as to amplify the adjustment precision of the motor, thereby enabling the accuracy of the tension value measured by the tension detector 2 to be high.
The first position sensor 71 and the second position sensor 72 are distributed along the extending direction of the guide rail 11, the sliding seat 4 is provided with the sensing piece 41, the sensing piece 41 can move between the detection end of the first position sensor 71 and the detection end of the second position sensor 72 for the sliding of the sliding seat 4, wherein the first position sensor 71 and the second position sensor 72 can detect and control the sliding position of the sliding seat 4 through the sensing piece 41, so that the stability and the reliability of tension control of the tension control device 100 on a pole piece or a diaphragm are ensured while the sliding stroke of the sliding seat 4 is controlled.
The third position sensor 73 is disposed between the first position sensor 71 and the second position sensor 72, and the third position sensor 73 is configured to drive the sliding element of the sliding seat 4, so as to ensure that each tension adjustment of the tension control device 100 has the same reference value, thereby ensuring the production quality of the cells in the same batch. Preferably, the tension control device 100 is provided with a slide groove at the position sensor, the slide groove extends in the extending direction of the guide rail 11, and the first position sensor 71, the second position sensor 72, and the third position sensor 73 are all slidably mounted on the slide groove in the extending direction of the slide groove. The arrangement of the sliding grooves enables the positions of the first position sensor 71, the second position sensor 72 and the third position sensor 73 to be adjustable, so that the tension control device 100 can be suitable for winding of battery cells with different parameter specifications, and the application range of the tension control device 100 is widened.
Further, the mounting base 1 is provided with a first limiting block 81 and a second limiting block 82, wherein the first limiting block 81 is located at the first end of the guide rail 11, the second limiting block 82 is located at the second end of the guide rail 11, and the first limiting block 81 and the second limiting block 82 are used for limiting the sliding of the sliding base 4, so that the sliding base 4 can only move between the first limiting block 81 and the second limiting block 82, and the sliding base 4 is prevented from being separated from the guide rail 11 from the mounting base 1. The first position sensor 71, the second position sensor 72, and the third position sensor 73 are located between the first stopper 81 and the second stopper 82.
The operation principle of the tension control device 100 is explained below:
in an initial state, a material (a pole piece or a diaphragm) passes through the tension control device 100 according to a route shown in fig. 1, and meanwhile, the rotor 32 of the linear motor 3 is controlled at the middle part of the stator 31, so that the second driving roller 5 and the third driving roller 6 on the sliding seat 4 are matched with the first driving roller 21 to tension the material, and the tension control device 100 can control the tension of the material to be reduced and can also control the tension of the material to be increased.
When the electric core winder starts to work, the tension detector 2 sends the detected tension value of the material to the controller of the electric core winder, so that the controller of the electric core winder adjusts the position of the rotor 32 of the linear motor 3 according to the tension measured by the tension detector 2, and the rotor 32 drives the sliding seat 4 and the second driving roller 5 and the third driving roller 6 on the sliding seat 4 to move relative to the first driving roller 21, thereby increasing the current tension of the material on the tension controller or reducing the current tension of the material on the tension controller. It can be seen that the tension detector 2 detects the current tension of the material in real time, and sends the tension value obtained in real time to the controller of the electric core winder, so that the controller can continuously adjust the tension of the material, a closed-loop control system is formed between the tension control device 100 and the controller, the tension value of the material is relatively stable, and the electric core wound by the electric core winder can be more compact and better in roundness.
Square power electrical core winder embodiment:
the square power electric core winder comprises a controller and a tension control device, wherein the tension control device is electrically connected with the controller, and the tension control device is the tension control device in the embodiment of the tension control device. The square power electric core winder provided with the tension control device can stabilize the tension of the pole piece and the diaphragm near a set value in the winding process, reduce the tension fluctuation of the pole piece and the diaphragm, ensure that the tension of the pole piece and/or the diaphragm can be kept stable in the high-speed winding process, and prevent the problems of large or small outer diameter, excessive roundness and the like of the wound electric core.
Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (10)
1. Tension control device comprises
The mounting seat is provided with a guide rail;
the tension detector is positioned at one end of the guide rail, and a first transmission roller is arranged at the detection end of the tension detector;
characterized in that, the tension control device further comprises:
the linear motor comprises a stator and a rotor, the stator is installed on the installation seat and extends along the guide rail, and the rotor is slidably arranged on the stator along the extending direction of the stator;
the sliding seat is fixedly connected with the rotor and is slidably connected with the guide rail;
the second driving roller is installed on the sliding seat and is parallel to the first driving roller;
the third driving roller is installed on the sliding seat and is parallel to the first driving roller.
2. The tension control device of claim 1, wherein:
the guide rail is a cross roller guide rail.
3. The tension control device of claim 1, wherein:
a first shortest inner common tangent line segment is arranged between the projection of the first driving roller and the projection of the second driving roller, and a second shortest inner common tangent line segment is arranged between the projection of the first driving roller and the projection of the third driving roller;
the length of the first shortest internal common tangent line segment is equal to the length of the second shortest internal common tangent line segment.
4. The tension control device of claim 3, wherein:
the first shortest internal common tangent line segment is parallel to the second shortest internal common tangent line segment.
5. The tension control device of claim 4, wherein:
the first shortest inner common tangent line segment is parallel to the guide rail.
6. The tension control device according to any one of claims 1 to 5, wherein:
the sliding seat is provided with an induction sheet;
the tension control device further comprises a first position sensor and a second position sensor, the first position sensor and the second position sensor are distributed along the extending direction of the guide rail, and the induction sheet moves between the detection end of the first position sensor and the detection end of the second position sensor.
7. The tension control device of claim 6, wherein:
the tension control device further comprises a third position sensor, the third position sensor is installed on the installation seat, and the third position sensor is located between the first position sensor and the second position sensor.
8. The tension control device of claim 6, wherein:
the mounting seat is provided with
The first limiting block is positioned at the first end of the guide rail;
the second stopper is located at the second end of the guide rail, the sliding seat moves between the first stopper and the second stopper, and the first position sensor and the second position sensor are both located between the first stopper and the second stopper.
9. The tension control device according to any one of claims 1 to 5, wherein:
the second driving roller comprises a first rotating shaft, a first roller and a first bearing, the first rotating shaft is fixedly arranged on the sliding seat, the inner ring of the first bearing is sleeved on the first rotating shaft, and the outer ring of the first bearing is embedded in the first roller;
the third driving roller comprises a second rotating shaft, a second roller and a second bearing, the second rotating shaft is fixedly installed on the sliding seat, the inner ring of the second bearing is sleeved on the second rotating shaft, and the outer ring of the second bearing is embedded in the second roller.
10. Square power electricity core winder, including the controller, its characterized in that:
the square power electric core winder further comprises a tension control device, wherein the tension control device is electrically connected with the controller, and the tension control device is the tension control device according to any one of the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922487334.7U CN211017294U (en) | 2019-12-30 | 2019-12-30 | Tension control device and square power electric core winding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922487334.7U CN211017294U (en) | 2019-12-30 | 2019-12-30 | Tension control device and square power electric core winding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211017294U true CN211017294U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922487334.7U Active CN211017294U (en) | 2019-12-30 | 2019-12-30 | Tension control device and square power electric core winding machine |
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| Country | Link |
|---|---|
| CN (1) | CN211017294U (en) |
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2019
- 2019-12-30 CN CN201922487334.7U patent/CN211017294U/en active Active
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