CN210701691U - Lithium battery pole piece roller press - Google Patents
Lithium battery pole piece roller press Download PDFInfo
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- CN210701691U CN210701691U CN201921569668.2U CN201921569668U CN210701691U CN 210701691 U CN210701691 U CN 210701691U CN 201921569668 U CN201921569668 U CN 201921569668U CN 210701691 U CN210701691 U CN 210701691U
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Abstract
The utility model relates to a lithium battery pole piece apparatus for producing field especially relates to a lithium battery pole piece roll squeezer, include: the pole piece coating device comprises a first roller, a second roller and a third roller, wherein the first roller and the second roller are tightly pressed at a first pressing position, the third roller and the first roller are tightly pressed at a second pressing position, and at least one position of the first pressing position and the second pressing position is tightly pressed on a pole piece coating area. The utility model discloses a change the position of third roll for the coating district of pole piece has a bit at least to be compressed tightly by the roll, has avoided rolling around because the different tension mutual interference's that leads to of blank and coating district thickness problem, prevent phenomena such as skidding, fold and broken belt that the pole piece arouses, has ensured that the pole piece can be stably rolled.
Description
Technical Field
The utility model relates to a lithium battery pole piece apparatus for producing field especially relates to a lithium battery pole piece roll squeezer.
Background
The rolling machine for the pole piece of the lithium battery completes the rolling of the pole piece of the battery according to the production process requirement of the lithium ion battery. The equipment mainly comprises an unreeling mechanism, a first pinch mechanism, a rolling mechanism, a pinch second pinch mechanism, a reeling mechanism and the like. After being uncoiled by an uncoiling shaft, the pole piece passes through a first clamping and conveying mechanism and enters a rolling mechanism for rolling, the rolled pole piece is stretched by a second clamping and conveying mechanism under high tension, and finally a coiling mechanism finishes coiling. The pinch mechanism is generally arranged in front of and behind the rolling mechanism respectively, and is mainly used for carrying out accurate high-tension stretching on the pole pieces before and after rolling, so that wrinkles generated in the pole piece blank area due to rolling are eliminated. The pinch mechanism and the rolling mechanism in the structure can separate the continuously coated pole pieces by tension, so that the tension sectional control is realized.
The current lithium battery pole piece rolling machine is mainly designed aiming at pole pieces of a continuous coating process, a hydraulic cylinder drives a lower roller to apply pressure to the pole pieces, and the tension of the pole pieces before and after rolling can be cut off under the combined action of an upper roller and the lower roller. A set of clamping and conveying mechanism is respectively arranged at the front and the rear of the rolling mechanism, and the pole piece is stretched under high tension to eliminate wrinkles generated in the rolling process of the pole piece. Along with the improvement of the battery manufacturing process level, a plurality of manufacturers adopt grid-coated pole pieces, and because the blank area and the coating area are different in pole piece thickness, when the existing lithium battery pole piece rolling machine rolls the pole piece blank area, the phenomenon of tension communication around the moment of rolling can occur due to the sudden change of the rolling thickness, so that the tension of the pole piece is interfered with each other before and after rolling, and the phenomenon of strip breakage is easy to occur.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The embodiment of the utility model provides a lithium battery pole piece roll squeezer to solve the technical problem that the tension is mutual interference around the pole piece roll-in of grid coating that exists at least among the prior art.
(II) technical scheme
In order to solve the technical problem, the embodiment of the utility model provides a lithium battery pole piece roller press, include: the pole piece coating device comprises a first roller, a second roller and a third roller, wherein the first roller and the second roller are tightly pressed at a first pressing position, the third roller and the first roller are tightly pressed at a second pressing position, and at least one of the first pressing position and the second pressing position is tightly pressed in a pole piece coating area.
Wherein an included angle between a line connecting the first pressing position and the axis of the first roller and a line connecting the second pressing position and the axis of the first roller satisfies a formula:
in the formula: l is0Representing the length of the blank area of the pole piece;
l represents the length of a pole piece coating area;
d represents the diameter of the first roller pressed with the third roller;
α represents the angle between the line connecting the first nip position and the axis of the first roll and the line connecting the second nip position and the axis of the first roll.
The lithium battery pole piece rolling machine further comprises a third roller adjusting device, the third roller adjusting device comprises a transverse moving mechanism and a rotating mechanism, the transverse moving mechanism is connected with a rotating shaft of the rotating mechanism, and a rotating end of the rotating mechanism is connected with the third roller.
The transverse moving mechanism comprises a screw rod mechanism, the screw rod mechanism comprises a screw rod and a nut, the screw rod is perpendicular to the axial direction of the third roller, and the nut is fixedly connected with a rotating shaft of the rotating mechanism.
The transverse moving mechanism further comprises a bevel gear sub-mechanism, the bevel gear sub-mechanism comprises a first gear and a second gear vertically meshed with the first gear, and the first gear is fixed on the nut and rotates coaxially with the nut.
The rotating mechanism comprises a driving unit and a rotating arm, one end of the rotating arm is hinged to the transverse moving mechanism, the other end of the rotating arm is fixed with the third roller, and the moving end of the driving unit is connected with the rotating arm.
The rotating mechanism further comprises a connecting shaft, the connecting shaft is arranged in parallel with the third roller, the second end of the rotating arm is connected with the middle of the connecting shaft, and two ends of the connecting shaft are respectively connected with two ends of the third roller.
And the second pressing position is located at the feeding position and/or the discharging position of the first pressing position along the conveying direction of the pole piece.
Wherein the third roller is a glue pressing roller.
(III) advantageous effects
The embodiment of the utility model provides a pair of lithium battery pole piece roll squeezer, first roll and second roll compress tightly at the first position that compresses tightly, and the third roll compresses tightly the position with first roll at the second, and first position and the second that compresses tightly compress tightly the position and have at least one to compress tightly in pole piece coating district. The utility model discloses a change the position of third roll for the coating district of pole piece has a bit at least to be compressed tightly by the roll, has avoided rolling around because the different tension mutual interference's that leads to of blank and coating district thickness problem, prevent phenomena such as skidding, fold and broken belt that the pole piece arouses, has ensured that the pole piece can be stably rolled.
Drawings
Fig. 1 is a schematic view of a first state structure of a lithium battery pole piece roller press according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second state of a lithium battery pole piece roller press according to an embodiment of the present invention;
FIG. 3 is a front view of a third roll adjustment apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a third roller adjustment device according to an embodiment of the present invention
Reference numerals:
1: a second roll; 2: a first roll; 3: a third roll; 4: a first compression position; 5: a second compression position; 6: a pole piece coating area; 7: a pole piece blank area; 801: a screw mechanism; 901: a cylinder; 902: a rotating arm; 903: and (7) connecting the shafts.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, the embodiment of the utility model discloses lithium battery pole piece roller press, include: the pole piece coating device comprises a first roller 2, a second roller 1 and a third roller 3, wherein the first roller 2 and the second roller 1 are tightly pressed at a first pressing position 4, the third roller 3 and the first roller 2 are tightly pressed at a second pressing position 5, and at least one of the first pressing position 4 and the second pressing position 5 is tightly pressed on a pole piece coating area 6.
Specifically, in the present embodiment, the position of the third roller 3 is adjusted, and the pole piece passes through the first pressing position 4 and the second pressing position 5 in sequence, so that the pole piece coating area 6 is pressed at least one of the second pressing position and the first pressing position.
In this embodiment, when the first roll 2 is a driving roll and the second roll 1 is a driven roll, the third roll 3 is arranged to be pressed against the first roll 2. In other embodiments, the second nip roller 1 may be a drive roller and the first nip roller 2 may be a driven roller. In other words, the present invention is not particularly limited to the driving roll and the driven roll, and only the first roll 2 is described as the driving roll and the second roll 1 is described as the driven roll as an example.
The second pressing position 5 is located at a feeding position and/or a discharging position of the first pressing position 4 along the conveying direction of the pole piece, and the pole piece before and/or after being rolled is subjected to high-tension stretching.
It is worth noting that: in fig. 1 and 2, the thicker part of the pole piece is the pole piece coating area 6, and the thinner part of the pole piece is the pole piece blank area 7.
The embodiment of the utility model provides a pair of lithium battery pole piece roll squeezer, first roll and second roll compress tightly at the first position that compresses tightly, and the third roll compresses tightly the position with first roll at the second, and first position and the second that compresses tightly compress tightly the position and have at least one to compress tightly in pole piece coating district. The utility model discloses a change the position of third roll for the coating district of pole piece has a bit at least to be compressed tightly by the roll, has avoided rolling around because the different tension mutual interference's that leads to of blank and coating district thickness problem, prevent phenomena such as skidding, fold and broken belt that the pole piece arouses, has ensured that the pole piece can be stably rolled.
Wherein, the included angle between the connecting line of the first compaction position 4 and the axle center of the first roller 2 and the connecting line of the second compaction position 5 and the axle center of the first roller 2 satisfies the formula:
in the formula: l is0Representing the length of the pole piece blank area 7;
l represents the length of the pole piece coating area 6;
d represents the diameter of the first roll 2 pressed against the third roll 3;
α represents the angle between the line connecting the first nip position 4 and the axis of the first roll 2 and the line connecting the second nip position 5 and the axis of the first roll 2.
As shown in fig. 1 and 2, in order to ensure that the pole piece coating region 6 is pressed in at least one of the second pressing position 5 and the first pressing position 4, two conditions are simultaneously ensured: 1) as shown in FIG. 1, the length L of the pole piece coating region is greater than or equal to the arc length between the first and second pressing positions, i.e., the arc length
Can obtain the product
2) As shown in FIG. 2, the blank area L of the pole piece0A first pressing position with a length less than or equal toAnd a second compacting position, i.e. arc length
Can obtain the product
The two equations are combined to obtain the value range of α:
as shown in fig. 3 and 4, the lithium battery pole piece rolling machine further includes a third roller adjusting device, the third roller adjusting device includes a transverse moving mechanism and a rotating mechanism, the transverse moving mechanism is connected with a rotating shaft of the rotating mechanism, and a rotating end of the rotating mechanism is connected with the third roller 3. The transverse moving mechanism in the embodiment is used for realizing transverse movement of the third roller 3, and can adjust the transverse pressure between the third roller 3 and the first roller 2; the rotating mechanism is used to adjust the nip position of the third roll 3 and the first roll 2 (i.e., the second nip position 5).
Further, the transverse moving mechanism comprises a screw mechanism 801, the screw mechanism 801 comprises a screw and a nut, the screw is perpendicular to the axial direction of the third roller 3, and the nut is fixedly connected with the rotating shaft of the rotating mechanism. In this embodiment, the screw is fixed, and the nut of the screw mechanism 801 can be adjusted by rotation to translate along the screw direction, and drive the third roller to press or separate from the first roller 2. According to actual needs, a transverse moving mechanism such as a push rod can be adopted for replacement.
Furthermore, the transverse moving mechanism also comprises a bevel gear sub-mechanism, the bevel gear sub-mechanism comprises a first gear and a second gear vertically meshed with the first gear, and the first gear is fixed on the nut and rotates coaxially with the nut. In the embodiment, the bevel gear mechanism is used as a transmission mechanism to transmit the torque to the nut, the handle can be arranged at the edge of the second gear, the second gear is driven to rotate by rotating the handle, and the first gear meshed with the second gear is driven to rotate, so that the nut fixed on the first gear rotates along with the first gear.
The rotating mechanism comprises a driving unit and a rotating arm 902, one end of the rotating arm 902 is hinged to the transverse moving mechanism, the other end of the rotating arm 902 is fixed with the third roller 3, and the moving end of the driving unit is connected with the rotating arm 902. Specifically, the driving unit in the present embodiment may be a linear motion driving unit such as a cylinder 901 or a push rod. The rotating arm 902 in this embodiment is hinged at one end to the traversing mechanism, and the pressing position (i.e., the second pressing position 5) of the third roll 3 and the first roll 2 can be adjusted by rotating the rotating arm 902 by the driving unit so that the other end of the rotating arm 902 rotates around the rotating shaft.
Further, the rotating mechanism further comprises a connecting shaft 903, the connecting shaft 903 is arranged in parallel with the third roller 3, the second end of the rotating arm 902 is connected with the middle of the connecting shaft 903, and two ends of the connecting shaft 903 are respectively connected with two ends of the third roller 3. In the embodiment, the rotation motion of the rotating arm 902 is transmitted to the two end parts of the third roller 3 through the connecting shaft 903, so that the two end parts of the third roller 3 move simultaneously, and the two end parts of the third roller 3 are ensured not to deflect in the moving process.
Wherein the third roller 3 is a glue pressing roller. According to actual needs, other rollers can be selected to replace the glue pressing roller in the embodiment.
The above description is only a 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 (9)
1. The utility model provides a lithium battery pole piece roll squeezer which characterized in that includes: the pole piece coating device comprises a first roller, a second roller and a third roller, wherein the first roller and the second roller are tightly pressed at a first pressing position, the third roller and the first roller are tightly pressed at a second pressing position, and at least one of the first pressing position and the second pressing position is tightly pressed in a pole piece coating area.
2. The lithium battery pole piece roller press of claim 1, wherein an included angle between a line connecting the first pressing position and the axis of the first roller and a line connecting the second pressing position and the axis of the first roller satisfies a formula:
in the formula: l is0Representing the length of the blank area of the pole piece;
l represents the length of a pole piece coating area;
d represents the diameter of the first roller pressed with the third roller;
α represents the angle between the line connecting the first nip position and the axis of the first roll and the line connecting the second nip position and the axis of the first roll.
3. The lithium battery pole piece roller press of claim 1, further comprising a third roller adjusting device, wherein the third roller adjusting device comprises a traversing mechanism and a rotating mechanism, the traversing mechanism is connected with a rotating shaft of the rotating mechanism, and a rotating end of the rotating mechanism is connected with the third roller.
4. The lithium battery pole piece roller press of claim 3, wherein the traversing mechanism comprises a screw mechanism, the screw mechanism comprises a screw and a nut, the screw is perpendicular to the axial direction of the third roller, and the nut is fixedly connected with a rotating shaft of the rotating mechanism.
5. The lithium battery pole piece roller press of claim 4, wherein the traversing mechanism further comprises a bevel gear sub-mechanism, the bevel gear sub-mechanism comprises a first gear and a second gear vertically meshed with the first gear, and the first gear is fixed to the nut and rotates coaxially therewith.
6. The lithium battery pole piece roller press as claimed in claim 3, wherein the rotating mechanism comprises a driving unit and a rotating arm, a first end of the rotating arm is hinged to the traversing mechanism, a second end of the rotating arm is fixed to the third roller, and a moving end of the driving unit is connected to the rotating arm.
7. The lithium battery pole piece roller press as claimed in claim 6, wherein the rotating mechanism further comprises a connecting shaft, the connecting shaft is arranged in parallel with the third roller, the second end of the rotating arm is connected with the middle part of the connecting shaft, and the two ends of the connecting shaft are respectively connected with the two ends of the third roller.
8. The lithium battery pole piece roller press as claimed in claim 1, wherein the second pressing position is located at the feeding position and/or the discharging position of the first pressing position along the conveying direction of the pole piece.
9. The lithium battery pole piece roller press as claimed in any one of claims 1 to 8, wherein the third roller is a glue roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569668.2U CN210701691U (en) | 2019-09-20 | 2019-09-20 | Lithium battery pole piece roller press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921569668.2U CN210701691U (en) | 2019-09-20 | 2019-09-20 | Lithium battery pole piece roller press |
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| Publication Number | Publication Date |
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| CN210701691U true CN210701691U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921569668.2U Active CN210701691U (en) | 2019-09-20 | 2019-09-20 | Lithium battery pole piece roller press |
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| CN (1) | CN210701691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138683A (en) * | 2022-09-02 | 2022-10-04 | 中创新航科技股份有限公司 | Pole piece rolling equipment |
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2019
- 2019-09-20 CN CN201921569668.2U patent/CN210701691U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138683A (en) * | 2022-09-02 | 2022-10-04 | 中创新航科技股份有限公司 | Pole piece rolling equipment |
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