CN217280856U - Battery pole piece and pole piece cutting equipment - Google Patents
Battery pole piece and pole piece cutting equipment Download PDFInfo
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- CN217280856U CN217280856U CN202220676631.5U CN202220676631U CN217280856U CN 217280856 U CN217280856 U CN 217280856U CN 202220676631 U CN202220676631 U CN 202220676631U CN 217280856 U CN217280856 U CN 217280856U
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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 battery pole piece and pole piece cutting equipment, wherein, battery pole piece is cut and is divided the branch through the chamfer by the pole piece area and cut and form, and battery pole piece's chamfer shape is the right trapezoid that obtuse angle department was the chamfer and deals with, and the transition pitch arc that obtuse angle department chamfer formed is protruding towards battery pole piece's inside direction, and right trapezoid's going to the bottom and battery pole piece's side coincidence, right trapezoid's height constitutes the degree of depth X that the chamfer cut 1 . The utility model discloses a battery pole piece, because battery pole piece's chamfer is right trapezoid, consequently when the pole piece cuts the operation, the chamfer shape on the pole piece receives and cuts cutter positional deviationThe influence of (2) is small, even if a cutting tool has slight deviation when cutting the pole piece, the completeness of the shape of the chamfer on the pole piece can be still kept, so that the precision control requirements of chamfer cutting and breaking cutting in the cutting process of the battery pole piece are favorably reduced.
Description
Technical Field
The utility model relates to a battery production technical field, in particular to battery pole piece. The utility model discloses still relate to a pole piece cutting tool.
Background
The lithium ion battery is a new generation green high-energy battery with excellent performance; the lithium battery works on the principle that chemical energy is converted into electric energy, and in the process, a conductive medium is needed to transfer the electric energy converted from the chemical energy. In the selection of materials, the metal materials have better conductivity, and in the metal materials, the materials with low price and good conductivity are copper foil and aluminum foil; the positive and negative electrode potentials of the lithium battery determine the aluminum foil of the positive electrode plate and the copper foil for the negative electrode plate; in the process of processing the positive and negative pole pieces, chamfering devices are needed to chamfer the positive and negative pole pieces.
In the actual production and processing process, a single-side deviation rectifying mode of the coil stock is adopted, namely one side is used as a reference, and the coil stock is rectified before chamfering. The deviation rectifying mode does not carry out deviation rectifying treatment on the die, although the size of the chamfer at the deviation rectifying side of the coil stock can be ensured, the chamfer at the non-deviation rectifying side is very easy to cause cutting errors due to the size fluctuation of the coil stock.
In the chamfer processing procedure, the actual processing size receives the coil stock supplied material easily and cuts the influence of size, when the position of chamfer and decide the cutter appears the deviation, causes great influence to the chamfer shape easily, leads to the chamfer can not accord with the pole piece requirement or the circumstances such as chamfer size nonconforming, finally influences the yields of pole piece and the security of lithium cell product.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a battery pole piece to do benefit to and reduce among the battery pole piece cutting technology chamfer and cut off the precision control requirement that cuts of dividing.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a battery pole piece is formed by chamfering, cutting, dividing and cutting a pole piece belt, and the battery is characterized in thatThe chamfer shape of pole piece is the right trapezoid that the chamfer was dealt with in obtuse angle department, the transition pitch arc that the chamfer of obtuse angle department formed towards the inside direction of battery pole piece is protruding, right trapezoid's lower bottom with the side coincidence of battery pole piece, right trapezoid's height constitutes the degree of depth X that the chamfer cut 1 。
Further, the obtuse angle of the right trapezoid ranges from 118 degrees to 125 degrees.
Further, the pole piece strip has a width dimension X 2 The depth X 1 ＝0.025～0.05X 2 。
Furthermore, the chamfer radius at the obtuse angle is R (0.015-0.03) X 2 And (4) chamfering.
Furthermore, the length L of the upper bottom of the right trapezoid is (0.015-0.03) X 2 。
Compared with the prior art, the utility model discloses following advantage has:
battery pole piece, because battery pole piece's chamfer is right trapezoid, consequently when the pole piece cuts the operation, the chamfer shape on the pole piece receives the influence that cuts cutter positional deviation less, even decide the cutter and have a slight deviation when cutting the pole piece, also can still keep the integrality of chamfer shape on the pole piece to do benefit to and reduce battery pole piece and cut the required precision control that the chamfer cut and divide absolutely and cut in the technology.
Another object of the present invention is to provide a pole piece cutting apparatus for use in the cutting operation of a battery pole piece, the pole piece cutting apparatus comprises a cutting tool for cutting off the cutting operation, and a chamfering mold for chamfering the cutting operation; the chamfering die is arranged above the side edge of the pole piece belt and is provided with a cutting end face in an isosceles trapezoid shape, and a chamfering notch in the shape of the isosceles trapezoid can be cut at the side edge part of the pole piece belt; decide the cutter edge the central line of chamfer breach cuts, and will the chamfer breach is cut apart to be located adjacent two respectively two chamfers on the battery sheet.
Further, the pole piece belt advances on a cutting platform; the other side of the pole piece belt is overlapped with a reference side arranged on the cutting platform relative to one side where the pole lugs are located; the chamfering die comprises a second chamfering die and a first chamfering die, wherein the second chamfering die is positioned above the reference side, and the first chamfering die is positioned above one side of the lug; the second chamfering die and the first chamfering die are arranged right opposite to each other, and the first chamfering die can adjust the position along the width direction of the pole piece belt.
Further, the pole piece cutting equipment comprises a detection device and a control unit connected with the first chamfering die and the detection device; the detection device is used for detecting the width of the pole piece belt and inputting a detection signal to the control unit; the control unit controls an adjustment amount of the first chamfering mold based on a condition of the detection signal.
Furthermore, a cutting support for driving the chamfering die to perform cutting action is arranged on the cutting platform, and a guide frame and an adjusting driving mechanism are arranged on the cutting support; the first chamfering die is arranged on the guide frame in a guiding mode along the width direction, and the adjusting and driving mechanism receives control of the control unit to drive the first chamfering die to move.
Further, the first chamfering die is arranged on the guide frame through a die seat; the adjusting driving mechanism comprises an adjusting lead screw in threaded connection with the die seat and a driving motor for driving the adjusting lead screw to rotate.
Compared with the prior art, the utility model discloses following advantage has:
pole piece cutting equipment, detection device detect the width in pole piece area, the position that the control unit received the detected signal and adjusted first chamfer mould cuts the pole piece area, can control the size that the pole piece took the chamfer to improve the yields of pole piece and the uniformity and the security of lithium cell product.
In addition, the second chamfering die is located above the reference side and is arranged right opposite to the first chamfering die, so that the first chamfering die and the second chamfering die can cut the pole piece belt simultaneously, and the cutting efficiency and accuracy of the pole piece belt can be improved.
Drawings
The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:
fig. 1 is a schematic view of an overall structure of a battery pole piece according to a first embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic view of the overall structure of a pole piece cutting apparatus according to the second embodiment of the present invention;
fig. 4 is a partial structural view of a pole piece cutting apparatus according to a second embodiment of the present invention;
fig. 5 is a flow chart of the cutting process according to the second embodiment of the present invention.
Description of the reference numerals:
10. a first chamfering die; 11. a detection device; 12. adjusting the driving mechanism; 120. adjusting a lead screw; 121. A drive motor; 13. a second chamfering die; 20. cutting off a cutter; 3. and (7) a tab.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are to be construed as indicating or implying any particular importance.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
The embodiment relates to a battery pole piece, in particular to a battery pole piece which is formed by cutting and breaking a pole piece belt through a chamfer, wherein the chamfer shape of the battery pole piece is a right trapezoid with an obtuse angle as a chamfer disposal, a transition arc line formed by the chamfer at the obtuse angle is convex towards the inner direction of the battery pole piece, the lower bottom of the right trapezoid is coincided with the side edge of the battery pole piece, and the height of the right trapezoid forms the depth X of chamfer cutting 1 。
Because the chamfer of the battery pole piece is in a right trapezoid shape, when the pole piece is cut, the shape of the chamfer on the pole piece is less influenced by the position deviation of the cutting tool, and even if the cutting tool 20 has a slight deviation when cutting the pole piece, the integrity of the shape of the chamfer on the pole piece can be still kept, so that the requirements on the precision control of chamfer cutting and disjunction cutting in the cutting process of the battery pole piece are reduced.
Based on the above overall design, an exemplary structure of the battery pole piece of the present embodiment is shown in fig. 1 and fig. 2, it should be noted that the chamfer shape on a single battery pole piece is a right trapezoid, and after two adjacent battery pole pieces are cut, the right trapezoids on the two pole pieces can be combined into an isosceles trapezoid.
It is worth mentioning that the obtuse angle of the right trapezoid is 118-125 degrees, and the pole piece belt has a width dimension X 2 By the width dimension X of the pole piece strip 2 Is a baseQuasi-value, preferably, depth X 1 ＝0.025～0.05X 2 . In addition, the chamfer radius at the obtuse angle is R ═ 0.015-0.03) X 2 The length L of the upper base of the right trapezoid is (0.015 to 0.03) X 2 . So set up, can make the pole piece area cut the chamfer and should not tear or damage. The size is set based on the width of the pole piece belt, so that the cut pole piece can be chamfered to meet the requirements of the pole piece in the subsequent process steps.
The chamfer shape of the battery pole piece of the embodiment is a right trapezoid with an obtuse angle part for chamfer treatment, and a transition arc line formed by the obtuse angle part chamfer is convex towards the inner direction of the battery pole piece, so that the requirements of chamfer cutting and breaking cutting precision control in the cutting process of the battery pole piece can be reduced.
Example two
The embodiment relates to a pole piece cutting device which is used for cutting operation of a battery pole piece in the first embodiment. Overall structure, pole piece cutting equipment is including being used for cutting apart the cutting tool 20 of cutting the operation to and be used for the chamfer mould of chamfer cutting operation. Specifically, the chamfering die is arranged above the side edge of the pole piece belt and has a cutting end face in an isosceles trapezoid shape, so that a chamfering notch in an isosceles trapezoid shape can be cut at the side edge of the pole piece belt, the cutting tool 20 cuts along the central line of the chamfering notch, and the chamfering notch is divided into two chamfers respectively located on two adjacent battery pole pieces.
The cutting end face is isosceles trapezoid, when the cutting tool 20 cuts the pole piece belt, the chamfering shape on the pole piece belt on two sides of the cutting tool 20 is not affected, even if the cutting tool 20 has a slight deviation relative to the central line of the isosceles trapezoid formed by the chamfering, the completeness of the chamfering shape on the pole piece can be still kept, and the pole piece belt is not prone to being torn or damaged at the cutting chamfer.
Specifically, as shown in fig. 3 and 4, the pole piece belt advances on the cutting platform, and the other side of the pole piece belt coincides with the reference side arranged on the cutting platform, with respect to the side where the tab 3 is located.
For the cutting efficiency who improves the pole piece area, the chamfer mould is still including being located the first chamfer mould 10 of utmost point ear 3 place one side top, and second chamfer mould 13 is located the top of benchmark side to just to setting up with first chamfer mould 10, and the width direction adjusting position in pole piece area can be followed to first chamfer mould 10. Therefore, the first chamfering die 10 and the second chamfering die 13 can simultaneously cut the pole piece belt, and the cutting efficiency and accuracy of the pole piece belt can be improved.
In addition, the pole piece cutting equipment comprises a detection device 11 and a control unit connected with the first chamfering die 10 and the detection device 11, wherein the detection device 11 is used for detecting the width of a pole piece belt and inputting a detection signal to the control unit, and the control unit controls the adjustment amount of the first chamfering die 10 based on the condition of the detection signal.
It can be understood that the pole piece strip coil is unreeled, and when the pole piece strip moved along the cutting platform, detection device 11 can detect the width of pole piece strip to send detecting signal for the control unit, the control unit received detecting signal and adjusted the position of first chamfer mould 10, waited to cut the position and confirm the back alright cut the pole piece strip, so can improve the cutting error that probably brings because of coil stock width size change in the chamfer course of working, thereby improve the yields of pole piece.
The cutting platform is provided with a cutting support used for driving the chamfering die to cut, and it needs to be explained that the cutting platform and the cutting support are not shown in the attached drawing in the embodiment, but can be understood that the cutting platform is used for supporting the pole piece belt and driving the pole piece belt to move, a rotating roller can be specifically adopted to drive the pole piece belt to move, specific limitation and explanation are not needed in the embodiment, and the pole piece belt roll is fixed on one side of the cutting platform so as to arrange the pole piece belt on the cutting platform when unreeling. In addition to this, the cutting bracket is a base body that arranges and fixes the first chamfering die 10, which may be specifically a bracket or a mounting plate.
In this embodiment, the pole piece cutting apparatus includes a guide frame disposed on the cutting support, and an adjustment driving mechanism 12. Specifically, first chamfer mould 10 sets up on the leading truck along the width direction, and adjustment actuating mechanism 12 accepts the control of control unit to drive first chamfer mould 10 and remove, cut the support and drive the first chamfer mould 10 of adjusting to take one's place and cut the action under cutting drive arrangement drives, and cutting drive arrangement can adopt to cut and drive actuating cylinder.
When the control unit receives a signal from the detection device 11, the control unit processes the signal of the detection device 11 and feeds the signal back to the adjustment driving mechanism 12, the control unit controls the first chamfering die 10 on the driving mechanism to move along the guide frame, and after the first chamfering die 10 moves to a proper position, the pole piece strip can be cut, so that the accuracy and the yield of pole piece cutting are improved.
Referring to fig. 3, the first chamfering mold 10 is disposed on the guiding frame through a mold base, and the adjusting driving mechanism 12 includes an adjusting screw 120 screwed on the mold base, and a driving motor 121 for driving the adjusting screw 120 to rotate. When the driving motor 121 is started, the adjusting screw 120 rotates along with the first chamfering mold 10, and the first chamfering mold 10 is arranged on the guide frame through the mold base, so that the adjusting screw 120 can push the first chamfering mold 10 to be close to or far away from the pole piece belt. The adjustment driving mechanism 12 is in the form of a driving motor 121 and an adjustment screw 120, so that the adjustment driving mechanism 12 has a simple overall structure, and is convenient for the position of the first chamfering die 10 to move.
It should be noted that the detection device 11 in this embodiment employs a CCD camera. The CCD camera technology is mature, and the result that detects the position is comparatively accurate, and detection pole piece belt width that can be fine feeds back to the control unit, makes first chamfer mould 10 can cut comparatively accurate antipodal piece area.
In a specific arrangement, the control unit may adopt a PLC, as shown in fig. 2, to cut the pole piece strip by the second chamfering mold 13 with a chamfering depth X 1, The width of the pole piece strip is X 2 The distance between the first chamfering die 10 and the second chamfering die 13 is X 3 For example. The control unit receives a feedback signal from the width of the pole piece detected by the detection device 11, and then finds that the distance Δ X that the first chamfering die 10 is to move is X 3 -(X 2 -X 1 ) The control unit processes the detection signal and drives the adjusting screw 120 to rotate correspondinglyThe number of turns may be set to Δ X, which is the distance the first chamfering die 10 moves. Based on the above calculation and position adjustment requirements, those skilled in the art can complete the position adjustment driving control of the first chamfering mold 10 by necessary setting and adjustment of the PLC and the driving motor 121.
In this embodiment, the length of the cut of the pole piece tape is set to X in the control unit 4 When the length of the pole piece strip reaches X 4 Then, the pole piece tape is cut by a cutting tool. After the chamfer on the pole piece belt is cut, the pole piece belt moves to the cutting tool 20, and when the length of the pole piece belt meets the cutting standard, the cutting tool 20 cuts the pole piece belt. Further, the guillotine cutter 20 is driven by an air cylinder to perform the vertical cutting operation.
The processing flow chart of this embodiment pole piece cutting equipment is shown in fig. 5, specific flow unreels for the pole piece winding, at this in-process, whether detection switch detects the pole piece area for one side at utmost point ear 3 place and the coincidence of benchmark side, send detection signal for the control unit after, the first chamfer mould 10 of control unit control moves to accurate position, pole piece area stop motion this moment, first chamfer mould 10 and second chamfer mould 13 cut the pole piece area simultaneously, pole piece area motion is decided to cutting tool 20 department afterwards, so just accomplish pole piece chamfer and the process of cutting.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a battery pole piece, is cut and is cut through the chamfer by the pole piece area and divide to cut and form its characterized in that:
the chamfer shape of battery pole piece is the right trapezoid that the chamfer was dealt with in obtuse angle department, the transition pitch arc that the chamfer of obtuse angle department formed towards the inside direction arch of battery pole piece, right trapezoid's lower bottom with the coincidence of the side of battery pole piece, right trapezoid's height constitutes the degree of depth X that the chamfer cut 1 。
2. The battery pole piece of claim 1, wherein:
the obtuse angle of the right trapezoid ranges from 118 degrees to 125 degrees.
3. The battery pole piece of claim 1 or 2, wherein:
the pole piece strip has a width dimension X 2 Said depth X 1 ＝0.025～0.05X 2 。
4. The battery pole piece of claim 3, wherein:
the chamfer radius at the obtuse angle is R (0.015-0.03) X 2 And (4) chamfering.
5. The battery pole piece of claim 3, wherein:
the length L of the upper bottom of the right trapezoid is (0.015-0.03) X 2 。
6. A pole piece cutting apparatus for use in the cutting operation of a battery pole piece as claimed in any one of claims 1 to 5, wherein:
the pole piece cutting equipment comprises a cutting tool (20) for breaking cutting operation and a chamfering die for chamfering cutting operation;
the chamfering die is arranged above the side edge of the pole piece belt and is provided with a cutting end face in an isosceles trapezoid shape, and a chamfering notch in the shape of the isosceles trapezoid can be cut at the side edge part of the pole piece belt;
decide cutter (20) and follow the central line of chamfer breach cuts, and will the chamfer breach is cut apart to be located adjacent two respectively two chamfer on the battery sheet.
7. The pole piece cutting apparatus of claim 6, wherein:
the pole piece belt advances on the cutting platform; the other side of the pole piece belt is superposed with a reference side arranged on the cutting platform relative to one side of the pole lug (3);
the chamfering die comprises a second chamfering die (13) positioned above the reference side and a first chamfering die (10) positioned above one side of the lug (3);
the second chamfering die (13) and the first chamfering die (10) are arranged just opposite to each other, and the first chamfering die (10) can adjust positions along the width direction of the pole piece belt.
8. The pole piece slitting apparatus as claimed in claim 7, wherein:
the pole piece cutting equipment comprises a detection device (11) and a control unit connected with the first chamfering die (10) and the detection device (11);
the detection device (11) is used for detecting the width of the pole piece belt and inputting a detection signal to the control unit;
the control unit controls the adjustment amount of the first chamfering mold (10) based on the condition of the detection signal.
9. The pole piece slitting apparatus as set forth in claim 8 wherein:
the cutting platform is provided with a cutting support for driving the chamfering die to perform cutting action, and the cutting support is provided with a guide frame and an adjusting driving mechanism (12);
the first chamfering die (10) is arranged on the guide frame in a guiding mode along the width direction, and the adjusting driving mechanism (12) is controlled by the control unit to drive the first chamfering die (10) to move.
10. The pole piece cutting apparatus of claim 9, wherein:
the first chamfering die (10) is arranged on the guide frame through a die seat;
the adjusting driving mechanism (12) comprises an adjusting lead screw (120) in threaded connection with the die base, and a driving motor (121) for driving the adjusting lead screw (120) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220676631.5U CN217280856U (en) | 2022-03-24 | 2022-03-24 | Battery pole piece and pole piece cutting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220676631.5U CN217280856U (en) | 2022-03-24 | 2022-03-24 | Battery pole piece and pole piece cutting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217280856U true CN217280856U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220676631.5U Active CN217280856U (en) | 2022-03-24 | 2022-03-24 | Battery pole piece and pole piece cutting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217280856U (en) |
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2022
- 2022-03-24 CN CN202220676631.5U patent/CN217280856U/en active Active
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