WO2020079991A1

WO2020079991A1 - Battery material lamination device

Info

Publication number: WO2020079991A1
Application number: PCT/JP2019/035447
Authority: WO
Inventors: 山下　学
Original assignee: 株式会社京都製作所
Priority date: 2018-10-19
Filing date: 2019-09-10
Publication date: 2020-04-23
Also published as: JP7182843B2; JP2020064812A

Abstract

The purpose of the present invention is to provide a battery material lamination device capable of laminating battery materials at high speed. The buttery material lamination device comprises a conveyance mechanism 1 that conveys a workpiece in a predetermined direction, a coating mechanism 2 that applies a bonding member B onto the surface of the workpiece W being conveyed by the conveyance mechanism 1, and a lamination mechanism 3 that constitutes a lamination body SW by laminating the workpiece W conveyed by the conveyance mechanism 1. When the workpiece W conveyed by the conveyance mechanism 1 is laminated on the lamination mechanism 3, the surface coated with the bonding member B of the workpiece W is stuck to the surface of the lamination body SW of the workpiece W constituted in the lamination mechanism 3.

Description

Battery material stacking device

The present invention relates to a battery material stacking device that stacks sheet-like works related to battery materials such as a positive electrode, a negative electrode, a separator, or cells composed of them.

Conventionally, laminated batteries have been used in various batteries such as automobile batteries, residential batteries, and batteries for electronic devices. This laminated battery is configured by alternately stacking a positive electrode plate, a separator, a negative electrode plate, and a separator in this order. Such a stack type battery is widely used because it has good power generation efficiency per volume and excellent heat dissipation as compared with a wound type battery formed by winding a battery material.

In the production of such a stack type battery, there has been conventionally known a technique of alternately stacking each electrode plate and separator, or alternately stacking cells in which electrode plates and separators are combined in advance (Patent Documents 1 to 1). 2).

For example, in Patent Document 1, each alignment stage moves and / or rotates in a plane direction to move and / or rotate a positive electrode plate and a negative electrode plate to adjust to an appropriate position. An electrode stacking device in which the transfer arm and the second transfer arm hold the respective electrode plates is disclosed.

Further, in Patent Document 2, a mounting surface on which the stacked body is mounted, a stop portion standing on one end of the mounting surface in the moving direction of the electrode to stop the electrode, a mounting surface and a stop portion, A laminated area having a laminated area provided between the laminated area, a gas spraying section arranged to face the placement surface and blowing gas toward the laminated area of the laminated section, and an electrode supplied to the laminated section. There is disclosed a stacking device including a control unit that controls a gas spraying unit so as to spray gas onto the electrodes after contacting the stop unit.

JP 2012-174388A JP, 2017-081699, A

However, as battery materials are increasingly required to be stacked at high speed for efficient manufacturing of batteries, when the battery materials are attempted to be stacked at high speed by force, the edges of the battery material are displaced, curled, or wrinkled. As a result, there are problems that the power generation efficiency and life of the battery are reduced, and the yield is generated.

The reason why it is difficult to stack battery materials at high speed in this way is that the battery material is made up of extremely thin and light members, and therefore it floats due to air resistance when the battery materials are stacked. Further, even after the battery materials are stacked, the end portions of the battery material stack may be gradually displaced due to the vibration of the device or the like. Therefore, the battery material stack must be pressed by a claw member or the like.

The present invention has been made in view of the above technical background, and an object of the present invention is to provide a battery material laminating apparatus capable of laminating battery materials at high speed.

In order to achieve the above-mentioned object, the present invention is a battery material stacking device for stacking sheet-like works relating to a battery material such as a positive electrode, a negative electrode, a separator, or a cell composed of them, wherein A transport mechanism that transports in a direction, a coating mechanism that coats an adhesive member on the surface of a work that is transported by the transport mechanism, and a work that has been transported by the transport mechanism are stacked to form a laminate. A laminating mechanism, and when laminating a work conveyed by the conveying mechanism onto the laminating mechanism, a surface of the workpiece to which an adhesive member is applied is applied to a surface of a laminate of the works constituted by the laminating mechanism. Characterized by pasting.

According to this, since the surface of the battery material is attached to the surface of the laminate by the adhesive member, it is possible to prevent the battery material from floating when the battery material is laminated on the laminating mechanism. Further, even after the battery material is stacked on the stacking mechanism, it is possible to prevent the end portions of the stack of battery material from being gradually displaced due to vibration of the device or the like. Therefore, the battery materials can be stacked at high speed, and the battery can be efficiently manufactured.

Further, when the work is stacked, the stacking mechanism adheres to the surface of the stack configured in the stacking mechanism while pressing the surface of the work on which the adhesive member is applied by approaching the transporting mechanism. Then, the separation from the transport mechanism may be repeated until the next work is stacked. According to this, the surface of the battery material can be reliably bonded to the surface of the laminate by the proximity of the stacking mechanism to the transport mechanism. Further, by separating the stacking mechanism from the transport mechanism, the next battery material can be smoothly transported above the stack.

When the work is stacked on the stacking mechanism, the transport mechanism presses the surface of the work on which the adhesive member is applied to the surface of the stacked body configured by the stacking mechanism by approaching the stacking mechanism. After the bonding, the work may be repeatedly separated from the stacking mechanism until the work is stacked on the stacking mechanism next time. According to this, the surface of the battery material can be reliably bonded to the surface of the stack by bringing the transport mechanism close to the stacking mechanism. Further, by separating the transport mechanism from the stacking mechanism, the next battery material can be smoothly transported above the stack.

Further, the transfer mechanism may include a transfer conveyor device for transferring the work in a suspended state, and a rotary transfer device for rotationally transferring the work transferred by the transfer conveyor device. According to this, it is possible to easily and surely stack the works with a simple structure.

Also, an adhesive member may be coated on the surface of the work by the coating mechanism while the work is being rotated and transported by the rotary transport device. According to this, since the adhesive member can be applied immediately before stacking the battery material, it is possible to prevent the adhesive member from drying in the process of transporting the battery material.

The transport mechanism includes a stator of a linear motor having a predetermined traveling path, a plurality of linear motor movers provided on the stator, and a holding member provided on each mover for holding a work. A control unit that controls the traveling of each mover in the stator may be provided. According to this, it is possible to easily and surely stack the works at desired places.

Further, a pressing member may be provided in the vicinity of the stacking mechanism, and the pressing member may press the stacked body of the works configured in the stacking mechanism from above. According to this, the surface of the work can be reliably bonded to the surface of the stack by pressing the stack from above by the pressing member immediately after the work is stacked on the stacking mechanism.

According to the present invention, since the surface of the battery material is attached to the surface of the laminated body by the adhesive member, it is possible to prevent the battery material from floating when laminating the battery material on the laminating mechanism. Further, even after the battery material is stacked on the stacking mechanism, it is possible to prevent the end portions of the stack of battery material from being gradually displaced due to vibration of the device or the like. Therefore, the battery materials can be stacked at high speed, and the battery can be efficiently manufactured.

It is a side view which shows the structure of the battery material laminating apparatus which concerns on embodiment of this invention. It is a top view which shows the structure of the battery material laminating apparatus (excluding a conveyer apparatus) of FIG. It is a side view which shows operation | movement of the lamination table of the battery material laminating apparatus of FIG. It is a block diagram which shows the electric constitution of the battery material laminating apparatus of FIG. It is a side view which shows the flow of the workpiece | work by the battery material laminating apparatus of FIG. It is a perspective view which shows the structure of the battery material laminating apparatus which concerns on other embodiment of this invention. It is a perspective view which shows the lamination mechanism of the battery material laminating apparatus which concerns on other embodiment of this invention.

Next, an embodiment of a battery material laminating apparatus according to the present invention (hereinafter referred to as the present apparatus) will be described with reference to FIGS. 1 to 5.

Note that, in the present embodiment, a case will be described in which sheet-like works W related to a battery material of a positive electrode, a negative electrode, a separator, or a cell composed of them are stacked. Further, the work W is very thin, but for convenience of explanation, the work W is illustrated with a certain thickness in each drawing.

As shown in FIG. 1, the present apparatus includes a transport mechanism 1 for transporting a work W, a coating mechanism 2 for coating an adhesive member B on the surface of the work W, and a stacked body SW by stacking the work W. The stacking mechanism 3 and the control unit 4 for controlling each mechanism are provided.

The transfer mechanism 1 includes a transfer conveyor device 11 that transfers the work W in a predetermined transfer direction (rightward in FIG. 1) and a rotary transfer device 12 that rotationally transfers the work W.

The transfer conveyor device 11 includes a main drive shaft 11a provided on the downstream side in the transfer direction of the work W, a driven shaft (not shown) provided on the upstream side in the transfer direction of the work W, and a main drive shaft 11a and a driven shaft. It is composed of a conveyor belt 11b that is endlessly wound between them, and the lower conveyor belt 11b moves in the transport direction when the driving shaft 11a rotates about its own axis. The conveyor belt 11b conveys the work W in the conveyance direction in a suspended state while adsorbing the surface (upper surface) of the work W.

The rotary transfer device 12 has a drum 121 arranged below the transfer conveyor device 11, and the drive motor (not shown) rotates the drum 121 in the transfer direction (clockwise in FIG. 1). In this drum 121, the surface (lower surface) of the work W transported by the transport conveyor device 11 is sequentially adhered on the peripheral surface by an air suction method, an electrostatic method, or the like, and the surface of the work W is inverted and the laminating mechanism is performed. It is rotatably conveyed downward to position 3.

The coating mechanism 2 has a discharge device 21 arranged at a position obliquely below and in front of the drum 121 of the rotary transport device 12 in the transport direction. As shown in FIG. 2, two discharge devices 21 are provided in the width direction orthogonal to the transport direction of the work W, and both end portions in the width direction of the work W transported by the drum 121 of the rotary transport device 12. Coating is performed by discharging the adhesive member B onto the surface of the.

In this embodiment, for example, a hot melt adhesive is used as the adhesive member B, but other adhesives or double-sided tape may be used.

The adhesive member B may be continuously or intermittently coated on the surface of one work W.

Further, when the ejecting device 21 ejects the adhesive member B onto the surface of the work W, the adhesive member B may be automatically ejected in synchronization with the rotational conveyance of the work W by the drum 121, or the adhesive member B is conveyed to the drum 121. The adhesive member B may be ejected on the basis of the result of detecting the workpiece W being formed by an image pickup device or a sensor.

The stacking mechanism 3 includes a stacking table 31 provided below the drum 121 of the rotary transport device 12, and the stacking table 31 is vertically moved by a drive motor (not shown) in synchronization with the rotation of the drum 121 of the rotary transport device 12. It is supposed to move to. Further, in the stacking table 31, the works W rotatably transported by the drum 121 of the rotary transport device 12 are sequentially stacked to form a stacked body SW in which the ends of the plurality of works W are aligned. It

Specifically, as shown in FIG. 3A, the stacking table 31 moves upward when the work W is transported to a position near the stacking table 31 by the drum 121 of the rotary transport device 12. As a result, the surface of the work W on which the adhesive member B is applied is pressed against the surface of the stacked body SW formed on the stacking table 31 by approaching the drum 121, and the work W is bonded to the surface. Further, as shown in FIG. 3B, the stacking table 31 moves downward from the drum 121 until the next work is stacked after the work W is stacked on the stacked body SW. To do. Thus, the stacking table 31 repeats a series of these vertical movement operations each time the work W is conveyed, so that the surfaces of the work W that are vertically stacked are bonded to each other by the adhesive member B. It constitutes the body SW.

As shown in FIG. 4, the control unit 4 performs various operations of the transport conveyor device 11 of the transport mechanism 1, the rotary transport device 12 of the transport mechanism 1, the discharge device 21 of the coating mechanism 2, and the stacking table 31 of the stacking mechanism 3. Is controlled via each drive motor.

Next, the flow of stacking the works W by this device will be described. In addition, when the works W are stacked, a plurality of works W are successively conveyed, but for convenience of description, one work W will be focused and described.

First, as shown in FIG. 5A, the work W is transported in the transport direction in a suspended state by the transport conveyor device 11 of the transport mechanism 1.

Then, as shown in FIG. 5B, when the work W reaches above the drum 121 of the rotary transport device 12, the work W is delivered while being sequentially attached to the peripheral surface of the drum 121 of the rotary transport device 12.

Then, as shown in FIG. 5C, the work W is rotated and conveyed while the surface of the work W is being inverted by the drum 121 of the rotary conveyance device 12, and the work W is discharged by the discharge device 21 of the coating mechanism 2. The adhesive member B is discharged and applied onto the surface of the. In this way, since the adhesive member B is applied immediately before the works W are stacked, it is possible to prevent the adhesive member B from drying during the process of transporting the works W.

Then, as shown in FIG. 5D, when the work W reaches above the stacking table 31 of the stacking mechanism 3, it is bonded to the surface of the stack SW formed on the stacking table 31. At this time, as described above, the stacking table 31 moves upward to approach the drum 121, so that the surface of the work W coated with the adhesive member B has the stacked body SW formed on the stacking table 31. The work W can be reliably stacked on the stacked body SW because the work W is attached while being pressed against the surface of the stacked body SW.

Then, the work W is in a state of being positioned on the uppermost layer of the new stacked body SW, as shown in FIG. At this time, since the stacking table 31 moves downward from the drum 121 as described above, the drum 121 of the rotary transport device 12 loads the next work W on the stack SW of the stacking table 31 of the stacking mechanism 3. It is possible to smoothly rotate and convey above the stacked body SW without contacting the above.

Since the work W related to the battery material is attached to the stacked body SW by the adhesive member B, it is possible to prevent the work W from being lifted when the work W is stacked on the stacking mechanism 3. Further, even after the works W are stacked on the stacking mechanism 3, it is possible to prevent the end portions of the stacked bodies SW from being gradually displaced due to the vibration of the apparatus or the like. Therefore, the works W can be stacked on the stacking mechanism at high speed, and the battery can be efficiently manufactured.

The transfer mechanism 1 is composed of the transfer conveyor device 11 and the rotary transfer device 12, but may be composed of other transfer devices.

Further, the rotary transfer device 12 is configured to rotate and transfer the work W by adhering the surface of the work W to the peripheral surface of the drum 121, but the work W may be rotated and transferred by another mechanism.

Further, although the rotary transfer device 12 rotates and transfers the work W while reversing the surface of the work W, the work W may be rotated and transferred while maintaining the horizontal state of the work W.

The transfer mechanism 1 may transfer the work W using the linear device 13. For example, as the linear device 13, as shown in FIG. 6, a stator 131 of a linear motor having a curved traveling track, a plurality of linear motor movers 132 provided on the stator 131, and each mover. A holding member 133 for holding the work W, which is provided in 132, and a control unit 4 for controlling the travel of each mover 132 in the stator 131 are provided, and each mover 132 has a curved travel path of the stator 131. One example is that the work W held by the holding member 133 is rotatively conveyed by traveling.

Further, although the coating mechanism 2 is provided with the discharging device 21 at a position obliquely below and in front of the drum 121 of the rotary conveying device 12 in the conveying direction, the discharging device 21 is provided at a position other than the drum 121 in the vicinity thereof. Alternatively, the discharge device 21 may be provided in the vicinity of the transport conveyor device 11 and the adhesive member B may be discharged onto the surface of the work while the work W is being transported by the transport conveyor device 11 for coating. Good.

Further, although the stacking table 31 of the stacking mechanism 3 is assumed to move in the vertical direction, the transport mechanism 1 (rotary transport device 12) may move in the vertical direction. For example, in the case of the device having the configuration shown in FIG. 1, when the rotary transport device 12 of the transport mechanism 1 stacks the works W on the stacking table 31 of the stacking mechanism 3, the work W is brought close to the stacking table 31 of the stacking mechanism 3. After the surface of the W to which the adhesive member B is applied is pressed against the surface of the laminated body SW formed on the laminating table 31 of the laminating mechanism 3, the work W is laminated on the laminating table 31 of the laminating mechanism 3. Until this is done, it may be separated from the laminating table 31 of the laminating mechanism 3.

In the laminating mechanism 3, the laminating table 31 may move not only in the vertical direction but also in the plane direction. According to this, even if the work W is conveyed on the drum 121 in a state displaced from the proper position, the work W is stacked by moving the stacking table 31 of the stacking mechanism 3 in the plane direction. Can be stacked in the proper position on the top.

Further, as shown in FIG. 7, the stacking mechanism 3 may be provided with a pressing member 5 such as a claw member near the stacking table 31. According to this, the surface of the work W can be reliably bonded to the surface of the stack SW by pressing the stack SW from above by the pressing member 5 immediately after the works W are stacked on the stacking mechanism 3. it can.

Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same or equivalent scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Conveying mechanism 11 ... Conveying conveyor device 11a ... Main shaft 11b ... Conveyor belt 12 ... Rotating conveying device 121 ... Drum 2 ... Coating mechanism 21 ... Discharging device 3 ... Laminating mechanism 4 ... Control part 5 ... Pressing member

Claims

A positive electrode, negative electrode, separator, or a battery material stacking device for stacking sheet-like works relating to a battery material such as a cell composed thereof,
A transfer mechanism that transfers the work in a predetermined direction,
A coating mechanism for coating an adhesive member on the surface of a work being conveyed by the conveyance mechanism,
A stacking mechanism that forms a stacked body by stacking works transferred by the transfer mechanism,
When laminating the work conveyed by the conveyance mechanism to the laminating mechanism, the surface of the work coated with an adhesive member is bonded to the surface of the laminate of the works constituted by the laminating mechanism. Battery material stacking device.
The laminating mechanism, when the workpieces are laminated, after adhering while pressing the surface of the workpiece applied with an adhesive member of the workpiece by adhering to the conveying mechanism while pressing the surface of the laminated body configured in the laminating mechanism, The battery material stacking device according to claim 1, wherein the work is repeatedly separated from the transport mechanism until the work is stacked next.
When the workpieces are stacked on the stacking mechanism, the transport mechanism attaches the surfaces of the workpieces, to which the adhesive member is applied, by pressing the surfaces of the stacks formed on the stacking mechanism while pressing the surfaces of the stacks. The battery material laminating apparatus according to claim 1, wherein after the work is laminated on the laminating mechanism, the work is repeatedly separated from the laminating mechanism.
The battery material stacking device according to claim 1, wherein the transfer mechanism includes a transfer conveyor device that transfers the work in a suspended state, and a rotary transfer device that rotationally transfers the work transferred by the transfer conveyor device.
The battery material laminating apparatus according to claim 4, wherein an adhesive member is applied to the surface of the work by the coating mechanism while the work is being rotationally transferred by the rotary transfer device.
The transport mechanism includes a stator of a linear motor having a predetermined traveling path, a mover of a plurality of linear motors provided on the stator, a holding member provided in each mover for holding a work, The battery material stacking device according to claim 1, further comprising: a control unit that controls traveling of each mover in the stator.
The battery material stacking device according to claim 1, wherein a pressing member is provided in the vicinity of the stacking mechanism, and the pressing member presses the stacked body of the works configured in the stacking mechanism from above.