Pole piece correction device

Abstract

The present invention discloses a pole piece correction device, which includes a pole piece correction mechanism, the pole piece correction mechanism includes a pole piece correction mounting frame, a positioning correction component and a positioning correction drive component; the positioning correction drive component is arranged on the pole piece correction mounting frame; the positioning correction component is arranged on the positioning correction drive component; when the fixture for sucking the pole piece rotates to the pole piece correction mechanism, the positioning correction drive component drives the positioning correction component to correct the pole piece sucked by the fixture. The pole piece correction device of the present invention adjusts the offset pole piece so that the pole piece is accurately attached to the predetermined position of the diaphragm, thereby obtaining a good battery cell, so as to improve the yield rate of the battery cell.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell production, and in particular to a pole piece deviation correction device. Background Art

[0002] In the production process of lithium-ion batteries, feeding of battery electrodes is a necessary process before stacking of battery electrodes. Currently, a pick-and-place mechanism is mainly used to suck the electrodes and attach them to the diaphragm. However, during the process of the pick-and-place mechanism sucking the electrodes, the electrodes are easily misaligned. If the misaligned electrodes are not adjusted, it is easy for the electrodes to be attached to the diaphragm without being in the predetermined position, thereby reducing the yield rate of the produced battery cells. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention discloses a pole piece correction device, which includes a pole piece correction mechanism, the pole piece correction mechanism includes a pole piece correction mounting frame, a positioning correction component and a positioning correction drive component; the positioning correction drive component is arranged on the pole piece correction mounting frame; the positioning correction component is arranged on the positioning correction drive component; when a jig for sucking the pole piece rotates to the pole piece correction mechanism, the positioning correction drive component drives the positioning correction component to correct the pole piece sucked by the jig.

[0004] According to one embodiment of the present invention, the positioning and correcting assembly comprises a correcting plate and a correcting needle; the correcting plate is arranged on the positioning and correcting driving assembly; and the correcting needle is arranged on the correcting plate.

[0005] According to one embodiment of the present invention, the positioning and deflection correction drive assembly comprises a positioning member and a deflection correction drive member; the positioning member is arranged on the pole piece deflection correction mounting frame; and the deflection correction drive member is arranged on the positioning member.

[0006] According to one embodiment of the present invention, the positioning member is an alignment platform.

[0007] According to one embodiment of the present invention, the pole piece deviation correction device further comprises a pole piece position detection mechanism; the pole piece position detection mechanism is located on one side of the pole piece deviation correction mechanism.

[0008] According to one embodiment of the present invention, the pole piece position detection mechanism comprises a pole piece position detection mounting frame and a pole piece position detection member; the pole piece position detection member is arranged on the pole piece position detection mounting frame.

[0009] According to one embodiment of the present invention, the above-mentioned pole piece position detection mechanism further includes a pole piece position detection light supply component; the pole piece position detection light supply component is arranged on the pole piece position detection mounting frame.

[0010] According to one embodiment of the present invention, the pole piece position detection element is an image sensor.

[0011] According to one embodiment of the present invention, the number of the pole piece position detection components is two, and the two pole piece position detection components are arranged opposite to each other on the pole piece position detection mounting frame.

[0012] Invention According to one embodiment of the present invention, the number of the above-mentioned pole piece position detection light-supply components is two, and the two pole piece position detection light-supply components are arranged opposite to each other on the pole piece position detection mounting frame.

[0013] The beneficial effect of the present invention is that the pole piece correction device of the present invention adjusts the offset pole piece so that the pole piece is accurately attached to the predetermined position of the diaphragm, thereby obtaining a good battery cell and improving the yield rate of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 Schematic diagram of the structure of the pole piece correction device in an embodiment of the present invention;

[0016] Figure 2 It is a structural schematic diagram of a pick-and-place mechanism in an embodiment of the present invention;

[0017] Figure 3 Another structural schematic diagram of the pick-and-place mechanism in an embodiment of the present invention;

[0018] Figure 4 It is a structural schematic diagram of a pole piece position detection mechanism according to an embodiment of the present invention;

[0019] Figure 5 Schematic diagram of the structure of the pole piece correction mechanism in an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1. Pole piece deviation correction device; 11. Rotating mechanism; 111. Divider; 112. Turntable; 12. Pick-up and placement mechanism; 121. Material picking and placing movable assembly; 1211. Material picking and placing mounting plate; 1212. Material picking and placing support plate; 12121. Electromagnetic clutch; 1213. Material picking and placing movable plate; 1214. Material picking and placing reset member; 1215. Ball bearing plate; 122. Pick-up and placement fixture; 1221. Suction plate; 1222. Deflection correction block; 1223, material loading and unloading buffer; 13, pole piece position detection mechanism; 131, pole piece position detection mounting frame; 132, pole piece position detection member; 133, pole piece position detection light supply member; 14, pole piece correction mechanism; 141, pole piece correction mounting frame; 142, positioning correction assembly; 1421, correction plate; 1422, correction needle; 143, positioning correction drive assembly; 1431, positioning member; 1432, correction drive member. DETAILED DESCRIPTION

[0022] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0026] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of the pole piece correction device 1 in the embodiment of the present invention. As shown in the figure, the pole piece correction device 1 of the present application includes a rotating mechanism 11, a pick-up and placement mechanism 12, a pole piece position detection mechanism 13 and a pole piece correction mechanism 14. The pick-up and placement mechanism 12 is arranged on the rotating mechanism 11. The pole piece position detection mechanism 13 and the pole piece correction mechanism 14 are arranged around the rotating mechanism 11 in sequence, and the pole piece position detection mechanism 13 and the pole piece correction mechanism 14 correspond to the pick-up and placement mechanism 12 respectively.

[0027] In specific application, first, the pick-up and placement mechanism 12 picks up the electrode; secondly, the rotating mechanism 11 drives the pick-up and placement mechanism 12 for picking up the electrode to rotate to the working position of the electrode position detection mechanism 13, and the electrode position detection mechanism 13 detects the position of the electrode. If the electrode is within the range of the predetermined position, the rotating mechanism 11 drives the pick-up and placement mechanism 12 for picking up the electrode to rotate to the diaphragm of the electrode to be attached, and the pick-up and placement mechanism 12 attaches the electrode to the diaphragm. If the electrode is not within the range of the predetermined position, the rotating mechanism 11 drives the pick-up and placement mechanism 12 for picking up the electrode to rotate to the working position of the electrode correction mechanism 14, and the electrode correction mechanism 14 corrects the position of the electrode. After the electrode position is corrected, the rotating mechanism 11 drives the pick-up and placement mechanism 12 for picking up the electrode to rotate to the diaphragm of the electrode to be attached, and the pick-up and placement mechanism 12 attaches the electrode to the diaphragm; finally, the rotating mechanism 11 continues to drive the pick-up and placement mechanism 12 to rotate to the corresponding electrode and pick up the electrode, and repeats the above actions to achieve continuous attachment of the electrode.

[0028] In specific application, the rotating mechanism 11 includes a divider 111 and a turntable 112. The input end of the divider 111 is connected to the output end of the driving motor, the driving motor drives the divider 111 to rotate, the turntable 112 is connected to the output end of the divider 111, the pick-and-place mechanism 12 is arranged on the turntable 112, and the turntable 112 rotates to drive the pick-and-place mechanism 12 to rotate to each station.

[0029] Please refer to Figure 2 and Figure 3 , Figure 2 It is a structural schematic diagram of the pick-and-place mechanism 12 in an embodiment of the present invention; Figure 3 1 is another structural schematic diagram of the pick-and-place mechanism 12 in an embodiment of the present invention. As shown in the figure, the pick-and-place mechanism 12 includes a pick-and-place movable assembly 121, a pick-and-place fixture 122, and a pick-and-place drive assembly (not shown in the figure). The pick-and-place movable assembly 121 is arranged on a turntable 122. The pick-and-place fixture 122 is arranged on the pick-and-place movable assembly 121. The pick-and-place drive assembly 123 is arranged on the turntable 122, and the pick-and-place drive assembly 123 is movably connected to the pick-and-place movable assembly 121.

[0030] The material picking and placing movable assembly 121 includes a material picking and placing mounting plate 1211, a material picking and placing support plate 1212, a material picking and placing movable plate 1213 and a material picking and placing reset member 1214. The material picking and placing mounting plate 1211 is arranged on the turntable 112. The material picking and placing support plate 1212 is slidably arranged on the material picking and placing mounting plate 1211 through a guide rail slider. The material picking and placing movable plate 1213 is connected to the material picking and placing support plate 1212 through magnetism. The material picking and placing reset member 1214 is respectively connected to the material picking and placing mounting plate 1211 and the material picking and placing support plate 1212, and specifically, the material picking and placing reset member 1214 is a spring.

[0031] Preferably, the material taking and placing movable assembly 121 further includes a ball plate 1215. The ball plate 1215 is located between the material taking and placing support plate 1212 and the material taking and placing movable plate 1213. The material taking and placing movable plate 1213 can roll along the surface of the ball plate 1215 when moving.

[0032] The pick-and-place fixture 122 includes a suction plate 1221 and a correction block 1222. The suction plate 1221 is arranged on the pick-and-place material movable plate 1213 through a fixed plate, and the suction plate 1221 is used to suck the pole piece. The correction block 1222 is arranged on the fixed plate, and the correction block 122 cooperates with the pole piece correction mechanism 14 to correct the pole piece position.

[0033] The material taking and discharging drive assembly includes a material taking drive member (not shown in the figure) and a material discharging drive member (not shown in the figure). The material taking drive member and the material discharging drive member are both arranged on the turntable 112, and the output end of the material taking drive member and the output end of the material discharging drive member are respectively movably connected to the material taking and discharging support plate 1212. Specifically, the material taking drive member and the material discharging drive member are both cylinders.

[0034] In specific application, when the rotating mechanism 11 drives the pick-up and release mechanism 12 to rotate to the corresponding pole piece, the material pick-up and release driving member generates a driving force to drive the pick-up and release support plate 1212 to move toward the pole piece, and the pick-up and release support plate 1212 drives the pick-up and release movable plate 1213 and the ball plate 1215 to move toward the pole piece. The pick-up and release movable plate 1213 drives the suction plate 1221 to move toward the pole piece, and the suction plate 1221 generates suction to suck the pole piece. At this time, the pick-up and release reset member 1214 is stretched, and the suction plate After 1221 sucks the electrode, the material taking driving member returns to the initial state, the stretched material taking and placing reset member 1214 returns to the initial unstretched state, and the elastic force of the material taking and placing reset member 1214 drives the material taking and placing support plate 1212, the material taking and placing movable plate 1213, the ball plate 1215 and the suction plate 1221 to return to the initial position, and then the turntable 112 rotates to drive the taking and placing mechanism 12 and the electrode to pass through the electrode position detection mechanism 13 and the electrode correction mechanism 14 in turn to reach the diaphragm patch station, and the material is discharged. The driving member generates a driving force to drive the material taking and discharging support plate 1212 to drive the material taking and discharging movable plate 1213 and the ball plate 1215 to move toward the diaphragm, and the material taking and discharging movable plate 1213 drives the suction plate 1221 to move toward the diaphragm, and the suction plate 1221 drives the pole piece to move toward the diaphragm, and the suction plate loses suction, and the pole piece is adsorbed on the diaphragm under the action of electrostatic force. At this time, the material taking and discharging reset member 1214 is stretched, and after the pole piece is adsorbed on the diaphragm, the material discharging driving member returns to the initial state, and the stretching The material picking and placing reset piece 1214 needs to restore to its initial unstretched state, and the elastic force of the material picking and placing reset piece 1214 drives the material picking and placing support plate 1212, the material picking and placing movable plate 1213, the ball plate 1215 and the suction plate 1221 to restore to their initial positions. Then, the turntable 112 continues to rotate, and the turntable 112 drives the picking and placing mechanism 12 to pass through the fixture straightening mechanism 15, the dust removal mechanism 16 and the static electricity removal mechanism 17 in turn to return to the position of the corresponding electrode piece, and this cycle is repeated to achieve continuous electrode bonding to the diaphragm.

[0035] Preferably, the pick-and-place fixture 122 further includes a pick-and-place buffer 1223. The pick-and-place buffer 1223 is disposed on the fixed plate. Specifically, the pick-and-place buffer 1223 is a spring. When the suction plate 1221 sucks the electrode, the pick-and-place buffer 1223 plays a buffering role to prevent the excessive force from affecting the electrode.

[0036] Please refer to Figure 4 , Figure 4It is a schematic diagram of the structure of the pole piece position detection mechanism 13 in the embodiment of the present invention. As shown in the figure, the pole piece position detection mechanism 13 includes a pole piece position detection mounting frame 131 and a pole piece position detection member 13. The pole piece position detection mounting frame 131 is located on the conveying path of the pole piece. The pole piece position detection member 134 is arranged on the pole piece position detection mounting frame 131. In this embodiment, the number of pole piece position detection members 134 is two, and the two pole piece position detection members 134 are relatively arranged on the pole piece position detection mounting frame 131. The two pole piece position detection members 134 perform image acquisition on the position of the pole piece. Of course, the number of pole piece position detection members 134 can be adaptively increased or decreased according to actual needs. The above is only one embodiment of the present invention and should not be limited to this. Specifically, the pole piece position detection member 134 is an image sensor.

[0037] Preferably, the pole piece position detection mechanism 13 also includes a pole piece position detection light supply component 133, and the pole piece position detection light supply component 133 is arranged on the pole piece position detection mounting frame 131. In this embodiment, the number of pole piece position detection light supply components 133 is two, and the two pole piece position detection light supply components 133 are relatively arranged on the pole piece position detection mounting frame 131. When the pole piece position detection component 134 performs image acquisition on the position of the pole piece, the two pole piece position detection light supply components 133 play the role of auxiliary lighting. Of course, the number of pole piece position detection light supply components 133 can be adaptively increased or decreased according to actual needs. The above is only one embodiment of the present invention and should not be limited to this. Specifically, the pole piece position detection light supply component 133 is a light source, and the model is OPT-LI18030-W.

[0038] Refer to Figure 5 , Figure 5 1 is a schematic diagram of the structure of the pole piece correction mechanism 14 in an embodiment of the present invention. As shown in the figure, the pole piece correction mechanism 14 includes a pole piece correction mounting frame 141, a positioning correction component 142, and a positioning correction drive component 143. The pole piece correction mounting frame 141 is located on the conveying path of the pole piece. The positioning correction drive component 143 is arranged on the pole piece correction mounting frame 141. The positioning correction component 142 is arranged on the positioning correction drive component 143.

[0039] The positioning and deflection correction drive assembly 143 includes a positioning member 1431 and a deflection correction drive member 1432. The positioning member 1431 is arranged on the pole piece deflection correction mounting frame 141. The deflection correction drive member 1432 is arranged on the positioning member 1431. In specific applications, the positioning member 1431 is a positioning platform, and the deflection correction drive member 1432 is a cylinder.

[0040] The positioning and correcting assembly 142 includes a correcting plate 1421 and a correcting needle 1422. One side of the correcting plate 1421 is connected to the output end of the correcting driving member 1432, and the correcting needle 1422 is disposed on the other side of the correcting plate 1421.

[0041] In this embodiment, the number of the correcting needles 1422 is four, and correspondingly, the number of the correcting blocks 1222 is also four. The four correcting needles 1422 cooperate with the four correcting blocks 1222 to correct the position of the pole piece. Of course, the number of the correcting needles 1422 can be adaptively increased or decreased according to actual needs. The above is only one embodiment of the present invention and should not be limited to this.

[0042] The turntable 112 of the invention drives the pick-up and placement mechanism 12 for sucking the electrode to rotate to the workstation of the electrode position detection mechanism 13, and the electrode position detection light supply component 133 emits a light source. The electrode position detection component 132 collects images of the position of the electrode and feeds back the collected data to the control system of the stacking machine. The control system of the stacking machine judges the received data. If the electrode is in the predetermined position of the suction plate 1221, the control system of the stacking machine controls the turntable 112 to drive the electrode to rotate to the workstation of the diaphragm patch to perform the electrode patch action; if the electrode is not in the predetermined position of the suction plate 1221, the control system of the stacking machine controls the turntable 112 to drive the electrode to rotate to the workstation of the electrode correction mechanism 14, and the control system of the stacking machine controls and transmits signals to the electrode correction mechanism 14, and the positioning correction component 142 adjusts the correction angle of the positioning correction drive component 143 according to the received signal, and then the correction drive component 1432 drives the correction plate 1421 and the correction needle 1422 to the pick-up and placement mechanism 12 The correcting needle 1422 is inserted into the correcting block 1222. It should be noted that the correcting needle 1422 is not completely inserted into the correcting block 1222. At this time, the electromagnetic clutch 12121 installed on the material taking and putting support plate 1212 is powered off, the magnetism disappears, the material taking and putting movable plate 1213 is separated from the material taking and putting support plate 1212, the material taking and putting movable plate 1213 slides on the ball plate 1125, and the material taking and putting movable plate 1213 drives the suction plate 1221 that has sucked the pole piece to slide, thereby realizing the correction. The position of the pole piece is corrected so that the pole piece is in a predetermined position. At the same time, the correction drive 1432 continues to drive the correction needle 1422 to move so that the correction needle 1422 is completely inserted into the correction block 1222 to complete the correction of the pole piece. After the correction, the electromagnetic clutch 12121 is energized so that the material taking and releasing movable plate 1213 is again magnetically adsorbed on the material taking and releasing support plate 1212, and then the turntable 112 drives the pole piece after the correction to rotate to the diaphragm patch station to perform the pole piece pasting action.

[0043] In specific applications, the above-mentioned rotating mechanism 11, the picking and placing mechanism 12, the pole piece position detection mechanism 13 and the pole piece correction mechanism 14 are all electrically connected to the control system of the pole piece correction device 1, and the control system of the pole piece correction device 1 controls the rotation mechanism 11, the picking and placing mechanism 12, the pole piece position detection mechanism 13 and the pole piece correction mechanism 14 to achieve the effect of automatic control of the pole piece correction device 1. Of course, the control system of the pole piece correction device 1 can be any one of an industrial computer, a PLC or a single-chip microcomputer, which will not be repeated here.

[0044] In summary, in one or more embodiments of the present invention, the pole piece correction device of the present invention adjusts the offset pole piece so that the pole piece is precisely attached to the predetermined position of the diaphragm, thereby obtaining a good battery cell to improve the yield rate of the battery cell.

[0045] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A pole piece deviation correction device, characterized in that: It comprises a rotating mechanism (11), a pick-up and placement mechanism (12), a pole piece position detection mechanism (13) and a pole piece deviation correction mechanism (14), wherein the pick-up and placement mechanism (12) is arranged on the rotating mechanism (11), the pole piece position detection mechanism (13) and the pole piece deviation correction mechanism (14) surround the rotating mechanism (11) in sequence, and the pole piece position detection mechanism (13) and the pole piece deviation correction mechanism (14) respectively correspond to the pick-up and placement mechanism (12); The pole piece deflection correction mechanism (14) comprises a pole piece deflection correction mounting frame (141), a positioning deflection correction component (142) and a positioning deflection correction drive component (143); the positioning deflection correction drive component (143) is arranged on the pole piece deflection correction mounting frame (141); the positioning deflection correction component (142) is arranged on the positioning deflection correction drive component (143); when a jig for sucking the pole piece rotates to the pole piece deflection correction mechanism (14), the positioning deflection correction drive component (143) drives the positioning deflection correction component (142) to correct the deflection of the pole piece sucked by the jig; The positioning and deflection correction component (142) comprises a deflection correction plate (1421) and a deflection correction needle (1422); the deflection correction plate (1421) is arranged on the positioning and deflection correction drive component (143); the deflection correction needle (1422) is arranged on the deflection correction plate (1421); The positioning and deflection correction driving component (143) comprises a positioning member (1431) and a deflection correction driving member (1432); the positioning member (1431) is arranged on the pole piece deflection correction mounting frame (141); the deflection correction driving member (1432) is arranged on the positioning member (1431); The picking and placing mechanism (12) comprises a picking and placing movable component (121), a picking and placing fixture (122) and a picking and placing driving component, wherein the picking and placing fixture (122) is arranged on the picking and placing movable component (121), and the picking and placing driving component is movably connected to the picking and placing movable component (121); The material taking and placing movable assembly (121) comprises a material taking and placing mounting plate (1211), a material taking and placing support plate (1212), a material taking and placing movable plate (1213), a material taking and placing reset member (1214) and a ball plate (1215); the material taking and placing support plate (1212) is slidably arranged on the material taking and placing mounting plate (1211) via a guide rail slider; the material taking and placing movable plate (1213) is magnetically connected to the material taking and placing support plate (1212); the material taking and placing reset member (1214) is respectively connected to the material taking and placing mounting plate (1211) and the material taking and placing support plate (1212); the ball plate (1215) is located between the material taking and placing support plate (1212) and the material taking and placing movable plate (1213); and the material taking and placing movable plate (1213) can roll along the surface of the ball plate (1215) when the material taking and placing movable plate (1213) is movable; The pick-and-place fixture (122) comprises a suction plate (1221) and a deviation-correcting block (1222); the suction plate (1221) is arranged on the pick-and-place material movable plate (1213) via a fixed plate; and the deviation-correcting block (1222) is arranged on the fixed plate.

2. The pole piece deviation correction device according to claim 1, characterized in that: The positioning member (1431) is an alignment platform.

3. The pole piece deviation correction device according to claim 1, characterized in that: It also includes a pole piece position detection mechanism (13); the pole piece position detection mechanism (13) is located on one side of the pole piece deviation correction mechanism (14).

4. The pole piece deviation correction device according to claim 3, characterized in that: The pole piece position detection mechanism (13) comprises a pole piece position detection mounting frame (131) and a pole piece position detection component (132); the pole piece position detection component (132) is arranged on the pole piece position detection mounting frame (131).

5. The pole piece deviation correction device according to claim 4, characterized in that: The pole piece position detection mechanism (13) further comprises a pole piece position detection light supply component (133); the pole piece position detection light supply component (133) is arranged on the pole piece position detection mounting frame (131).

6. The pole piece deviation correction device according to claim 4, characterized in that: The pole piece position detection element (132) is an image sensor.

7. The pole piece deviation correction device according to claim 4, characterized in that: The number of the pole piece position detection components (132) is two, and the two pole piece position detection components (132) are arranged relative to the pole piece position detection mounting frame (131).

8. The pole piece deviation correction device according to claim 5, characterized in that: The number of the pole piece position detection light supply components (133) is two, and the two pole piece position detection light supply components (133) are arranged relative to the pole piece position detection mounting frame (131).

Images