阅读说明：本技术 电芯极片上料矫正方法 (Method for correcting feeding of electrode plate of electric chip ) 是由 林国栋 赵盛宇 王腾 温燕修 雷宇 张均龙 于 2020-07-14 设计创作，主要内容包括：本发明公开了一种电芯极片上料矫正方法,包括以下步骤：通过吸附装置吸取第一极片,第一极片为直接与吸附装置接触的极片；第一极片从极片存储装置移动至传输装置的过程中,通过分片处理使第二极片落回极片存储装置内,第二极片为粘附于第一极片下方的极片；通过传输装置将第一极片送入矫正机构,矫正机构中的送料组件将极片运输至接触矫正机构中的定位组件；定位组件限定第一极片的位置。通过本发明的电芯极片上料矫正方法,可以实现在进入上料工序的下一道工序前,矫正极片的位置误差,使进入下一道工序的极片位置准确,便于后续工艺的加工,不再需要过多的调整,提高了加工的准确性和效率。(The invention discloses a method for correcting the feeding of a battery cell pole piece, which comprises the following steps: absorbing a first pole piece through an adsorption device, wherein the first pole piece is directly contacted with the adsorption device; in the process that the first pole piece moves from the pole piece storage device to the transmission device, the second pole piece falls back into the pole piece storage device through the slicing processing, and the second pole piece is the pole piece adhered below the first pole piece; the first pole piece is sent into the correction mechanism through the transmission device, and the pole piece is conveyed to the positioning assembly in the contact correction mechanism by the feeding assembly in the correction mechanism; the positioning assembly defines a position of the first pole piece. By the method for correcting the feeding of the battery cell pole piece, the position error of the pole piece can be corrected before the next procedure of the feeding procedure, so that the position of the pole piece entering the next procedure is accurate, the processing of the subsequent process is facilitated, excessive adjustment is not needed, and the accuracy and the efficiency of the processing are improved.)

1. A method for correcting the feeding of a battery cell pole piece is characterized by comprising the following steps:

absorbing a first pole piece through an adsorption device, wherein the first pole piece is directly contacted with the adsorption device;

in the process that the first pole piece moves from the pole piece storage device to the transmission device, a second pole piece falls back into the pole piece storage device through slicing processing, wherein the second pole piece is a pole piece adhered to the lower part of the first pole piece;

the first pole piece is conveyed into a correction mechanism through the conveying device, and a feeding assembly in the correction mechanism conveys the pole piece to be in contact with a positioning assembly in the correction mechanism;

the positioning assembly defines a position of the first pole piece.

2. The method for straightening the feeding of the battery cell pole pieces according to claim 1, wherein the straightening mechanism further comprises a transportation device, the feeding assembly is positioned above the transportation device, and in the step of feeding the first pole piece into the straightening mechanism through the transportation device, and the feeding assembly in the straightening mechanism transports the pole piece to contact the positioning assembly in the straightening mechanism, the method further comprises the following steps:

the conveying device drives the feeding assembly to rotate, and the feeding assembly drives the first pole piece to move to contact with the positioning assembly.

3. The method of claim 2, wherein the transportation device is a transportation belt, the transportation belt drives the feeding assembly to rotate, and the feeding assembly drives the first pole piece to move to contact the positioning assembly.

4. The method for correcting the feeding of the battery core pole piece, according to claim 2, further comprising a supporting plate, wherein the supporting plate is arranged on the conveying device, the feeding assembly is a driven wheel, the driven wheel is rotatably arranged in the supporting plate, the conveying device drives the driven wheel to rotate, and the driven wheel conveys the pole piece to a position where the driven wheel contacts the positioning assembly.

5. The method for correcting the feeding of the battery cell pole piece according to claim 4, wherein the driven wheels comprise a first driven wheel and a second driven wheel, the first driven wheel is horizontally arranged, the second driven wheel is obliquely arranged, and after the step of feeding the pole piece into the correcting mechanism through the transmission device, the method further comprises the following steps:

the first driven wheel conveys the first pole piece to a second driven wheel which transports the first pole piece to a position where it contacts a positioning assembly.

6. The method of claim 5, wherein the positioning assembly comprises a first stop and a second stop, the first stop and the second stop are both mounted on the support plate, the first stop is disposed on a side away from the first driven wheel, the second stop is perpendicular to the first stop, and the first stop and the second stop cooperate with each other to define a position of the first pole piece.

7. The method for correcting the feeding of the battery cell pole piece according to claim 1, further comprising a first air flow nozzle and a second air flow nozzle, wherein the first air flow nozzle and the second air flow nozzle are both disposed on a side of the pole piece storage device away from the transportation device, and in the step of "the first pole piece moves from the pole piece storage device to the transportation device, the second pole piece falls back into the pole piece storage device through a piece separation process, and the second pole piece is a pole piece adhered to a lower side of the first pole piece", the method further comprises the following steps:

the first air flow nozzle emits first air flow, the first air flow acts on the pole pieces in the pole piece storage device, part of the pole pieces on the uppermost layer are made to arch upwards, the adsorption device absorbs the first pole pieces, the second air flow nozzle emits second air flow, the second air flow acts on the pole pieces, and the second air flow blows off the second pole pieces.

8. The method for correcting the feeding of the battery core pole piece according to claim 1, wherein the transmission device comprises a plurality of transmission rollers and a plurality of rollers, the rollers are rotatably mounted on a rotating shaft, the rollers are located above the transmission rollers, and in the step of feeding the first pole piece into the correction mechanism through the transmission device, the method further comprises the following steps:

the first pole piece is conveyed to be in contact with the transmission roller, the roller rotates downwards around the rotating shaft and is in contact with the first pole piece, the roller and the transmission roller are matched with each other to drive the first pole piece to be far away from the pole piece storage device, and the roller rotates upwards around the rotating shaft and is far away from the transmission roller.

9. The method for straightening the feeding of the battery cell pole piece according to claim 1, wherein the feeding assembly is provided with a pressing roller, and after the step of feeding the first pole piece into the straightening mechanism through the conveying device, the method further comprises the following steps of:

the transmission device conveys the first pole piece to the first driven wheel, the first pole piece is located below the pressing roller, and the pressing roller presses the first pole piece to be flat and shaped.

Technical Field

The invention relates to the technical field of lithium batteries, in particular to a method for correcting the feeding of a battery cell pole piece.

Background

The lithium battery has good development trend due to the advantages of long service life, high rated voltage, low self-discharge rate, high storage energy density and high power bearing capacity, and the process of battery core forming plays an important role in the manufacturing of the lithium battery. The battery cell forming process comprises a pole piece feeding procedure, and the quality of a pole piece feeding method is related to the quality and the forming efficiency of subsequent battery cell forming. In the prior art, a manipulator is often used for taking materials, the pole pieces are corrected while being taken, and after the materials are separated by shaking action, the pole pieces are adsorbed by a sucking disc and are discharged and transported; when the manipulator puts down the pole piece, the position precision of the pole piece can not be adjusted again before entering the next procedure, if the position of the pole piece has deviation, the adjustment can not be carried out, and the accuracy and the efficiency of the subsequent electric core forming process are influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a method for correcting the feeding of the battery cell pole piece, which can finish the pole piece feeding process with high precision and high efficiency.

The method for correcting the feeding of the battery cell pole piece comprises the following steps: absorbing a first pole piece through an adsorption device, wherein the first pole piece is directly contacted with the adsorption device; in the process that the first pole piece moves from the pole piece storage device to the transmission device, a second pole piece falls back into the pole piece storage device through slicing processing, wherein the second pole piece is a pole piece adhered to the lower part of the first pole piece; the first pole piece is conveyed into a correction mechanism through the conveying device, and a feeding assembly in the correction mechanism conveys the pole piece to be in contact with a positioning assembly in the correction mechanism; the positioning assembly defines a position of the first pole piece.

The method for correcting the feeding of the battery cell pole piece, provided by the embodiment of the invention, at least has the following beneficial effects: the first pole piece is absorbed by the absorption device and is subjected to fragmentation processing, so that the first pole piece is prevented from being adhered to the second pole piece, the purpose of single-piece feeding is realized, and the efficiency of a subsequent cell forming process is improved; the first pole piece is transported to the transmission device and is sent into the correction mechanism through the transmission device, the feeding assembly on the correction mechanism transports the first pole piece to the contact positioning assembly, the position of the first pole piece is limited through the positioning assembly, and the position deviation of the first pole piece on the correction mechanism is adjusted. Because the feeding assembly is always in a moving state, the first pole piece is always moved to a position close to the positioning assembly, and the first pole piece is dynamically corrected. Through so setting up can realize correcting the purpose of the positional deviation of first pole piece before first pole piece gets into next process, reduce because influence such as error that the positional deviation of first pole piece brought, can also improve follow-up electric core forming process's rate of accuracy and efficiency.

According to some embodiments of the invention, the straightening mechanism further comprises a transport device, the feeding assembly is located above the transport device, and in the step of feeding the first pole piece into the straightening mechanism by the transport device, the feeding assembly in the straightening mechanism transports the pole piece to contact the positioning assembly in the straightening mechanism, the method further comprises the following steps:

the conveying device drives the feeding assembly to rotate, and the feeding assembly drives the first pole piece to move to contact with the positioning assembly.

According to some embodiments of the invention, the transport device is a transport belt, the transport belt drives the feeding assembly to rotate, and the feeding assembly drives the first pole piece to move to contact the positioning assembly.

According to some embodiments of the invention, the pole piece positioning device further comprises a supporting plate, the supporting plate is arranged on the conveying device, the feeding assembly is a driven wheel, the driven wheel is rotatably arranged in the supporting plate, the conveying device drives the driven wheel to rotate, and the driven wheel conveys the pole piece to a position where the driven wheel contacts the positioning assembly.

According to some embodiments of the invention, the driven wheels include a first driven wheel and a second driven wheel, the first driven wheel is horizontally arranged, the second driven wheel is obliquely arranged, and after the step of feeding the pole piece into the correction mechanism through the transmission device, the method further comprises the following steps:

the first driven wheel conveys the first pole piece to a second driven wheel which transports the first pole piece to a position where it contacts a positioning assembly.

According to some embodiments of the invention, the positioning assembly includes a first stopper and a second stopper, the first stopper and the second stopper are both mounted on the supporting plate, the first stopper is disposed on a side away from the first driven wheel, the second stopper is perpendicular to the first stopper, and the first stopper and the second stopper cooperate to define the position of the first pole piece.

According to some embodiments of the present invention, the method further includes a first air flow nozzle and a second air flow nozzle, the first air flow nozzle and the second air flow nozzle are both disposed on a side of the pole piece storage device away from the transportation device, and in the step of "the first pole piece moves from the pole piece storage device to the transportation device, the second pole piece falls back into the pole piece storage device through a piece separation process, and the second pole piece is a pole piece adhered below the first pole piece", the method further includes the following steps:

the first air flow nozzle emits first air flow, the first air flow acts on the pole pieces in the pole piece storage device, part of the pole pieces on the uppermost layer are made to arch upwards, the adsorption device absorbs the first pole pieces, the second air flow nozzle emits second air flow, the second air flow acts on the pole pieces, and the second air flow blows off the second pole pieces.

According to some embodiments of the present invention, the transmission device includes a plurality of driving rollers and a plurality of rollers, the rollers are rotatably mounted on the rotating shaft, the rollers are located above the driving rollers, and in the step of "feeding the first pole piece into the straightening mechanism through the transmission device", the transmission device further includes the following steps:

the first pole piece is conveyed to be in contact with the transmission roller, the roller rotates downwards around the rotating shaft and is in contact with the first pole piece, the roller and the transmission roller are matched with each other to drive the first pole piece to be far away from the pole piece storage device, and the roller rotates upwards around the rotating shaft and is far away from the transmission roller.

According to some embodiments of the present invention, the feeding assembly is provided with a pressing roller, and after the step of feeding the first pole piece into the straightening mechanism through the conveying device, the method further comprises the following steps:

the transmission device conveys the first pole piece to the first driven wheel, the first pole piece is located below the pressing roller, and the pressing roller presses the first pole piece to be flat and shaped.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a single pole piece of an embodiment of the present invention before rectification;

FIG. 2 is a schematic view of the single sheet shown in FIG. 1 after rectification;

figure 3 is a side view of an orthotic mechanism according to an embodiment of the present invention.

The device comprises a first pole piece 100, a correcting mechanism 110, a conveying belt 111, a first driven wheel 112, a second driven wheel 113, a first stop block 114, a second stop block 115, a supporting plate 116 and a pressing roller 120.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the positional descriptions, such as the directions of up, down, front, rear, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.