CN-116093400-B - Winding method with pre-winding action and multi-station winding device

CN116093400BCN 116093400 BCN116093400 BCN 116093400BCN-116093400-B

Abstract

The invention provides a winding method with a pre-winding action and a multi-station winding device, wherein the winding method with the pre-winding action comprises the following steps of conveying a first material belt to a material obtaining station by a first conveying line; the winding mechanism at the winding station performs winding action, the winding mechanism at the material obtaining station moves to a preparation position for butting with the first material belt, when the winding mechanism at the winding station completes the winding action, the winding mechanism at the material obtaining station acquires and cuts off the first material belt, when each winding mechanism on a winding wire completes the action of the station, the winding mechanism moves to a downstream station, and the winding mechanism performs pre-rolling action when moving from the material obtaining station to the winding station. The pre-winding action is parallel to the movement of the winding mechanism from the material obtaining station to the winding station, so that the initial winding of the battery cell can be started in the process of changing the working station, and the time consumption of the battery cell manufacturing process can be shortened by the winding method with the pre-winding action.

Inventors

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Assignees

广东利元亨智能装备股份有限公司

Dates

Publication Date: 20260512
Application Date: 20211108

Claims (13)

1. A winding method with a pre-winding action, characterized by: the winding method with the pre-winding action uses a winding wire, a first conveying line and at least three winding mechanisms moving along the winding wire, wherein the winding wire is connected end to end, the winding wire comprises a material obtaining station and a winding station, and the winding station is positioned at the downstream of the material obtaining station; the winding method with the pre-winding action comprises the following steps: The first conveying line conveys a first material belt to the material obtaining station; The winding mechanism positioned at the winding station performs winding action, and the winding mechanism positioned at the material obtaining station moves to a preparation position matched with the first material belt; when the winding mechanism at the winding station completes the winding action, the winding mechanism at the material obtaining station obtains and cuts off the first material belt; after each winding mechanism on the winding line completes the action of the station where the winding mechanism is located, the winding mechanism moves to the downstream station; the winding mechanism performs pre-rolling when moving from the material obtaining station to the winding station; the winding method with the pre-winding action uses a second conveyor line, and the winding method with the pre-winding action further includes: A second conveying line conveys a second material belt to the winding station, and the winding mechanism positioned at the winding station acquires the second material belt; Acquiring a first offset, wherein the first offset refers to the offset of the second material belt relative to the winding mechanism; the winding mechanism motion is controlled to counteract the first offset.
2. The winding method with pre-winding action according to claim 1, wherein the winding wire further comprises a rubberizing station and a blanking station, the winding mechanism at the material obtaining station is capable of returning to the material obtaining station through the winding station, the rubberizing station and the blanking station in sequence, and the winding method with pre-winding action further comprises: The winding mechanism performs ending actions when moving from the winding station to the rubberizing station; the winding mechanism performs rubberizing action when moving to the rubberizing station; and the winding mechanism performs a blanking action when moving to the blanking station.
3. The method of claim 1, wherein the winding wire further comprises a blanking station, the winding mechanism at the material receiving station is capable of sequentially returning to the material receiving station through the winding station and the blanking station, and the winding method with the pre-winding action further comprises: The winding mechanism performs ending and rubberizing actions after finishing winding actions; and the winding mechanism performs a blanking action when moving to the blanking station.
4. The method of claim 1, wherein the winding mechanism comprises a winding needle comprising a first needle and a second needle, the step of moving the winding mechanism to a ready position for interfacing with the first web comprises: the winding needle extends out along the axial direction so that the first material belt passes through the space between the first needle body and the second needle body; the winding method with the pre-winding action further comprises: When the winding mechanism moves from an upstream station to the material obtaining station, the winding needle is axially retracted to avoid the first material belt.
5. The method of claim 4, wherein the winding mechanism further comprises a rotary cutter located between the first needle and the second needle, the rotary cutter comprising a blade portion and a pinch portion, the step of the winding mechanism capturing and severing the first web comprising: the rotary cutter rotates to enable the pressing part to be close to the second needle body, and the pressing part and the second needle body press the first material belt; The rotary cutter rotates to enable the blade part to be close to the first needle body, and the first needle body and the blade part cut off the first material belt.
6. The winding method with pre-winding action according to claim 1, characterized in that said first conveyor line comprises two membrane conveyor units and a first pole piece conveyor unit, the step of conveying a first strip to said obtaining station further comprising: The diaphragm conveying unit provides a diaphragm, and the first pole piece conveying unit provides the first pole piece; Acquiring a second offset, wherein the second offset refers to the offset of the diaphragm relative to the first pole piece; controlling the diaphragm movement to counteract the second offset; attaching two diaphragms to two sides of the first pole piece respectively to form a first material belt; and conveying the first material belt to the material obtaining station.
7. The winding method with pre-winding action according to claim 6, characterized in that the step of feeding the first web to the obtaining station comprises: cutting off the first material belt; sticking a protective adhesive at the cutting position to reconnect the first material belt; Sending the stuck first material belt to a material obtaining station; And when the protective adhesive is adhered, a gap is reserved between two sections of the first material belt, and the cutting position of the winding mechanism in the step of obtaining and cutting the first material belt is consistent with the position of the gap.
8. A multi-station winding apparatus, comprising: The winding device comprises a winding wire, wherein the winding wire is connected end to end, the winding wire comprises a material obtaining station and a winding station, and the winding station is positioned at the downstream of the material obtaining station; the first conveying line is used for conveying a first material belt to the material obtaining station; At least three winding mechanisms movable along the winding line; The multi-station winding device further comprises a second conveying line, the second conveying line is used for conveying a second material belt to the winding station, and the winding mechanism can stretch and retract along the axis direction so as to correct the deviation of the second material belt.
9. The multi-station winding device of claim 8, wherein the winding wire further comprises a rubberizing station and a blanking station, the winding mechanism can sequentially pass through the material obtaining station, the winding station, the rubberizing station and the blanking station to return to the material obtaining station, a tail-ending mechanism for ending is arranged between the winding station and the rubberizing station, and the rubberizing station is provided with a rubberizing mechanism for rubberizing.
10. The multi-station winding device of claim 8, wherein the winding wire further comprises a blanking station, the winding mechanism can sequentially pass through the material obtaining station, the winding station and the blanking station to return to the material obtaining station, and the winding station is provided with a tail-end rubberizing mechanism for tail-end and rubberizing.
11. The multi-station winding device of claim 8, wherein the first conveying line comprises two diaphragm conveying units and a first pole piece conveying unit, the diaphragm conveying units are used for providing diaphragms, the first pole piece conveying units are used for providing first pole pieces, and the first conveying line can respectively attach two diaphragms to two sides of the first pole pieces to form the first material belt.
12. The multi-station winding apparatus of claim 11, wherein the first conveyor line includes a pre-cutting station for cutting the first web, the pre-cutting station being configured to form a gap at a cutting position of the first web and apply a protective adhesive.
13. The multi-station winding device of claim 8, wherein the winding mechanism comprises a winding needle and a rotary cutter, the winding needle comprises a first needle body and a second needle body, the first needle body and the second needle body are used for clamping the first material belt, the rotary cutter is positioned between the first needle body and the second needle body, the rotary cutter comprises a blade part and a pressing part, the blade part is matched with the first needle body, the pressing part is matched with the second needle body, the rotary cutter can rotate to enable the blade part to cut off the first material belt, and the rotary cutter can rotate to enable the pressing part to press the first material belt.

Description

Winding method with pre-winding action and multi-station winding device Technical Field The invention relates to the field of battery core manufacturing, in particular to a winding method with a pre-winding action and a multi-station winding device. Background The winding process can be adopted for manufacturing the battery cell, the winding machine generally comprises a plurality of stations, each station is responsible for different actions, in the current winding method, after the winding mechanism finishes the actions of the current station, the winding machine controls the winding mechanism to move to the next station, and the winding mechanism performs the next part of actions after reaching the next station. And finally, the winding mechanism performs a blanking action on the blanking station to discharge the battery core, then transfers the battery core to the initial station to retrieve the material belt, and starts a new cycle. The problem with the current winding method is that the whole winding process takes a part of time for switching the winding mechanism between different stations, resulting in poor continuity of the winding process and a time consuming and difficult reduction. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a winding method with a pre-winding action and a multi-station winding device, and the winding method with the pre-winding action can shorten the time consumption of the manufacturing process of the battery cell. According to the winding method with the pre-winding action, provided by the invention, a winding wire, a first conveying line and at least three winding mechanisms moving along the winding wire are used, the winding wire is connected end to end, the winding wire comprises a material obtaining station and a winding station, and the winding station is positioned at the downstream of the material obtaining station; the winding method with the pre-winding action comprises the following steps: The first conveying line conveys a first material belt to the material obtaining station; The winding mechanism positioned at the winding station performs winding action, and the winding mechanism positioned at the material obtaining station moves to a preparation position matched with the first material belt; when the winding mechanism at the winding station completes the winding action, the winding mechanism at the material obtaining station obtains and cuts off the first material belt; after the winding mechanism positioned at each station completes the action of the station, the winding mechanism moves to the downstream station; The winding mechanism performs pre-rolling when moving from the material obtaining station to the winding station. The winding method with the pre-winding action has the advantages that the pre-winding action is performed after the winding mechanism acquires the first material belt by additionally arranging the pre-winding action, and the pre-winding action is parallel to the movement of the winding mechanism from the material acquisition station to the winding station, so that the initial winding of the battery cell can be started in the process of changing the working position, the time consumption of the winding mechanism for winding the battery cell in the winding station is shortened, and the winding method with the pre-winding action can shorten the time consumption of the battery cell manufacturing process. According to some embodiments of the invention, the winding line further comprises a rubberizing station and a blanking station, the winding mechanism located at the material obtaining station can sequentially pass through the winding station, the rubberizing station and the blanking station to return to the material obtaining station, and the winding method with the pre-winding action further comprises: The winding mechanism performs ending actions when moving from the winding station to the rubberizing station; the winding mechanism performs rubberizing action when moving to the rubberizing station; and the winding mechanism performs a blanking action when moving to the blanking station. According to some embodiments of the invention, the winding line further includes a blanking station, the winding mechanism located at the material obtaining station is capable of sequentially returning to the material obtaining station through the winding station and the blanking station, and the winding method with the pre-winding action further includes: The winding mechanism performs ending and rubberizing actions after finishing winding actions; and the winding mechanism performs a blanking action when moving to the blanking station. According to some embodiments of the invention, the winding mechanism comprises a winding needle comprising a first needle body and a second needle body, the step of moving the winding mechanism to a ready po