KR20210009779A - Electrode Transfer Apparatus for Manufacturing Cell Stack of Secondary Battery - Google Patents

Abstract

The present invention relates to an electrode transfer apparatus for manufacturing a cell stack of a secondary battery to transfer electrodes (cathode and anode) while being stacked in a cam driving type to manufacture the cell stack inside the secondary battery, so as to provide continuous and efficient driving control of the stacking transfer of the electrodes. The present invention provides the electrode transfer apparatus including: an X-axis transfer portion provided at a front thereof with a transfer panel and driven to move linearly in left and right X-axis directions while supporting the transfer panel; and an elevation transfer unit including an elevation pickup unit positioned corresponding to the transfer panel of the X-axis transfer portion to adsorb the electrodes on a lower part and move in a vertical and linear direction, and an elevation drive unit installed on the transfer panel to apply power for vertical movement of the elevation pickup unit, wherein the elevation driving unit of the elevation transfer portion includes a rotational drive shaft rotatably installed and extending in the X-axis direction on the transfer panel, an elevation drive motor for applying rotational power to the rotational drive shaft, and an elevation connection cam installed on the rotational drive shaft and rotated in connection and contact with the elevation pickup unit so as to convert rotational motion into the vertical linear motion of the elevation pickup unit.

Description

Electrode Transfer Apparatus for Manufacturing Cell Stack of Secondary Battery}

The present invention relates to an electrode transfer device for manufacturing a secondary battery cell stack, and more particularly, in the manufacture of a cell stack inside a secondary battery, electrodes (cathode and anode) are stacked by a cam driving method to transfer the electrode. It relates to an electrode conveying apparatus for manufacturing a secondary battery cell stack capable of continuously and efficiently controlling the stacking conveyance.

In general, a chemical cell is a cell composed of a pair of electrodes of a positive electrode plate and a negative electrode plate, and an electrolyte, and the amount of energy that can be stored varies depending on the material constituting the electrode and the electrolyte. These chemical batteries are used by being divided into a primary battery that is used only for one-time discharge because the charging reaction is very slow, and a secondary battery that can be reused through repeated charging and discharging.

In recent years, unlike primary batteries, secondary batteries capable of charging and discharging are applied to various technical fields throughout the industry, and are widely used as energy sources for advanced electronic devices such as wireless mobile devices, for example, as well as fossil fuels. It is also attracting attention as an energy source such as hybrid electric vehicles, which is proposed as a solution to the air pollution of existing gasoline and diesel internal combustion engines that use gasoline and diesel.

Examples of such secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-hydrogen batteries, and lithium secondary batteries. Basically, secondary batteries include a positive electrode plate, a separator, and a negative electrode plate sequentially stacked in an electrolyte solution. It is made in a soaked form.

Methods of manufacturing such a cell stack inside a secondary battery are largely divided into two types. In the case of small secondary batteries, a method of arranging the negative and positive plates on a separator and winding them to form a jelly-roll is widely used, and in the case of a medium-large-sized secondary battery having a higher electric capacity A method of manufacturing a negative electrode plate, a positive electrode plate, and a separator in an appropriate order is widely used.

At this time, there are various methods of manufacturing the cell stack inside the secondary battery in a stacked manner. Among them, in the Z-stacking method, the separator is folded in zigzag, and the negative electrode plate and the positive electrode plate are alternately formed between them. To be stacked in an inserted form.

As described above, in manufacturing a cell stack inside a secondary battery, the electrode (cathode and anode) can be continuously supplied to sequentially undergo various manufacturing steps, and an electrode transfer device is provided.

As a prior art disclosed in connection with the electrode transfer device as described above, Korean Patent Laid-Open Publication No. 13469 (1997.03.29.) discloses a guide bar inserted into the center of the bottom of the box-type terminal film main body in which a rectangular terminal film is loaded and a speech bubble. The support plate on the disc is integrally provided, and the guide bar is tangled with a spring to support the terminal film sexually, and at one side of the terminal film body part, an elevating cylinder and a lowering cylinder in both vertical directions of a transfer device comprising an upper and lower jig Vertical transfer bars to be erected are installed downward, and front and rear transfer cylinders and erected front and rear transfer bars are installed on both sides of the upper jig in the horizontal direction to integrally transfer the upper and lower jigs, and suction plates are installed at the bottom of the vertical transfer bars, respectively, A device for loading and transferring a film of a positive/negative electrode terminal of a battery is known which can improve workability and productivity of electrode manufacturing as it is configured to adsorb a film.

In addition, Patent Publication No. 962897 (2010.06.01.) has a supply unit in which a plurality of separation plates and MEAs are stacked on the inside of the plate-shaped base frame to be supplied, and the supply unit is installed at a distance from both ends of the upper side of the base frame. A pair of first conveying parts extending toward and including a second conveying part disposed above the first conveying part so as to be movable along the length direction of the first conveying part and arranged to be stacked by moving the separating plate and the MEA respectively And, in the second transfer unit, a transfer bar having both ends orthogonally seated on the upper side of the pair of first transfer units, and first and second adsorption units that are spaced apart from each other on the rear surface of the transfer bar to adsorb the separating plate and the MEA, respectively. The first and second adsorption units are supported by a slide member that is slidably movable along the length direction of the transfer bar, one side is interlocked so that it is erected on the side of the slide member, and the other side is horizontally disposed toward the upper surface of the base frame. Bracket, an air chamber part supported and installed at the bottom of the other side of the support bracket to adsorb the separation plate and MEA, a cylinder part supported and installed on one side of the support bracket to raise and lower the air chamber part, and one end of the air chamber part As each of the air tubes that are connected to supply external air to the inside of the air chamber part is provided, a transporter for a fuel cell stack assembly device capable of preventing erroneous assembly due to poor stacking and improving working speed is known. have.

However, among the above-described conventional technologies, Korean Patent Publication No.13469 and Registered Patent Publication No.962897 both perform vertical linear reciprocating motion by driving a cylinder and a motor. In order to create a motion that can be performed by continuous operation, it must be controlled in the form of acceleration/deceleration, stop, acceleration/deceleration, and the manufacturing time of the stack inevitably increases due to the delay in the operation of the electrode transfer and loading process. There was a problem that it would cause.

In addition, the above-described conventional techniques have a problem in that the equipment construction cost of the device is high and maintenance is inconvenient because the cylinder and the driving source of the motor are individually mounted for each of the plurality of conveying units.

KR Patent Publication No. 10-1997-0013469 (1997.03.29.) KR Registered Patent Publication No. 10-0962897 (2010.06.01.)

The present invention is to solve the above problems, and since the electrode transfer lifting structure for manufacturing the cell stack constitutes a cam driving method, it is possible to realize a high-speed operation as well as driving stability in the electrode transfer/loading process. To provide an electrode transfer device for manufacturing a secondary battery cell stack, there is an object thereof.

In addition, the present invention is for manufacturing a secondary battery cell stack that can minimize the maintenance cost as well as the equipment construction cost because it is configured to collectively control the elevating driving source of stepwise electrode transfer toward the stacking process of the cell stack. It is to provide an electrode transfer device.

An electrode transfer device for manufacturing a secondary battery cell stack proposed by the present invention includes an X-axis transfer unit having a transfer panel in the front and supporting the transfer panel to be linearly moved in the left and right X-axis directions; An elevating pickup unit positioned corresponding to the transfer panel of the X-axis transfer unit, but configured to adsorb an electrode at the bottom and flow in a vertical vertical straight direction, and a vertical flow of the elevating pickup unit installed on the transfer panel. Including, the lift drive unit of the lift drive unit for applying the power for the lifting drive unit, a rotation drive shaft that is rotatably installed extending in the X-axis direction on the transfer panel, and the An elevating drive motor that applies rotational power to the rotary drive shaft, and an elevating connecting cam that is installed on the rotary drive shaft and rotates in a contact state connected to the lift pickup unit, but converts a rotary motion into a vertical linear motion of the lift pickup unit. It is done by doing.

The lifting pick-up unit includes an adsorption means for generating an adsorption force so as to be able to pick up an electrode at the lower part, and a lifting block disposed at an upper and lower interval and connected by a pair of guide bars extending in a vertical direction and configured to move up and down. , It is installed on the upper part of the lifting block and constitutes a lifting rolling roller that rotates in a rolling contact in response to the lifting connection cam of the lifting drive unit.

In the lifting pickup unit, a first buffering means provided on the guide bar of the lifting block and buffering vertical movement of the lifting block, and a contact force applied to the suction means provided between the suction means and the lifting block It constitutes a second buffering means for buffering.

The lift pickup unit of the lift transfer unit is configured to include a plurality of units on the transfer panel of the X-axis transfer unit so that movement of the lift transfer unit in the X-axis direction is collectively driven, and the lift driving unit of the lift transfer unit is It is configured to have a plurality of lifting connection cams on the rotation drive shaft in correspondence with the plurality of lifting pickup units.

The elevating connection cam of the elevating driving unit forms a contact area with the elevating pickup unit in a separate shape for each driving type of the elevating pickup unit with respect to an electrode.

According to the electrode transfer device for manufacturing a secondary battery cell stack according to the present invention, since the elevating drive for picking up and feeding the electrode is controlled by a cam driving method, the tact time for the manufacturing process of the stack while preventing unnecessary delays in work ( tact time) and thus improves the productivity of the product.

In addition, since the electrode transfer device for manufacturing a secondary battery cell stack according to the present invention is configured to collectively control a plurality of vertical drives with a single drive source as well as a batch drive in the X-axis direction for a plurality of lift pickup units, It has the effect of minimizing the drive source of the facility itself to reduce facility construction cost and maintenance cost, and to promote operation stability and accuracy through collective operation.

In addition, since the electrode transfer device for manufacturing a secondary battery cell stack according to the present invention is configured to generate a plurality of driving motions by dividing the lift pickup drive by type, there is an effect of expanding the application area with the functionality of electrode transfer. .

1 is a block diagram conceptually showing an embodiment according to the present invention.
Figure 2 is a front view showing an embodiment according to the present invention.
3 is a perspective view showing an embodiment according to the present invention.
Figure 4 is an exemplary view conceptually showing another embodiment of the lifting connection cam in one embodiment according to the present invention.
5A and 5B are graphs showing driving states for each area of the elevating connection cam of FIG. 4;

The present invention is provided with a transfer panel in the front, and an X-axis transfer unit that supports the transfer panel and drives to move linearly in the left and right X-axis direction; An elevating pickup unit positioned corresponding to the transfer panel of the X-axis transfer unit, but configured to adsorb an electrode at the bottom and flow in a vertical vertical straight direction, and a vertical flow of the elevating pickup unit installed on the transfer panel. Including, the lift drive unit of the lift drive unit for applying the power for the lifting drive unit, a rotation drive shaft that is rotatably installed extending in the X-axis direction on the transfer panel, and the An elevating drive motor that applies rotational power to the rotary drive shaft, and an elevating connecting cam that is installed on the rotary drive shaft and rotates in a contact state connected to the lift pickup unit, but converts a rotary motion into a vertical linear motion of the lift pickup unit. An electrode transfer device for manufacturing a secondary battery cell stack is characterized by a technical configuration.

Next, a preferred embodiment of an electrode transfer device for manufacturing a secondary battery cell stack according to the present invention will be described in detail with reference to the drawings.

First, an embodiment of an electrode transfer device for manufacturing a secondary battery cell stack according to the present invention includes an X-axis transfer unit 100 and an elevating transfer unit 200 as shown in FIGS. 1 and 2.

The X-axis transfer unit 100 performs a function of repeatedly continuously transferring the elevating transfer unit 200 so as to sequentially traverse the working path of the electrode. That is, as shown in FIG. 1, the X-axis transfer unit 100 is configured to reciprocate the lift transfer unit 200 in the left and right work paths based on the stack stacking stage 10.

As shown in Fig. 2, the X-axis transfer unit 100 is fixedly installed on the upper end of the support frame 50, and has a structure extending in the left and right transverse directions.

The X-axis transfer unit 100 includes a transfer panel 110 in front.

The transfer panel 110 of the X-axis transfer unit 100 is formed to mount and support the components of the lift transfer unit 200, and is configured to be able to run along the X-axis transfer path.

The X-axis transfer unit 100 is driven to move linearly in the left and right X-axis directions while supporting the transfer panel 110. That is, the X-axis transfer unit 100 forms a linear transfer path of the transfer panel 110 in the X-axis direction, and the transfer panel 110 is connected and coupled to the inside to apply a mechanical or electrical driving force. Make up.

The elevating transfer unit 200 is located so as to be movable corresponding to the transfer panel 110 of the X-axis transfer unit 100, and has a function of promoting an elevating drive for picking up and supplying electrodes in correspondence with stages for each process. Perform.

As shown in Figs. 2 and 3, the elevating transfer unit 200 includes an elevating pickup unit 210 having a structure capable of elevating and descending, and an elevating driving unit that applies power for vertical flow of the elevating pickup unit 210 Construct 220.

The lifting pickup unit 210 is a structure capable of adsorbing an electrode in a lower portion and flowing in a vertical vertical direction, and constitutes an adsorption means 211, a lifting block 213, and a lifting rolling roller 215.

The adsorption means 211 is positioned at the lower portion of the lifting pickup unit 210 to correspond to the electrode, and generates an adsorption force to pick up the electrode on the lower surface.

A porous suction hole (not shown in the drawing) is formed on the lower surface of the suction means 211, and the suction hole is driven to generate a vacuum suction force.

The lifting block 213 is formed to be moved up and down by the lifting drive unit 220 while supporting the adsorption means 211.

The lifting block 213 has a structure in which a plurality of the lifting blocks 213 are arranged at an upper and lower interval, and is configured with a vertical interval based on a support block 217 fixedly installed on the transport panel 110 of the X-axis transport unit 100. . That is, the lifting block 213 is an upper lifting block 213a positioned above the support block 217, and a lower lifting block 213a positioned below the support block 217 to support the adsorption means 211. A block 213b is configured.

The lifting block 213 is provided with a pair of guide bars 214 extending vertically in the vertical direction, and guided to be bound so as to be vertically linearly movable on the support block 217, and the lifting blocks are arranged at vertical intervals. Connect (213) integrally.

The lifting block 213 is configured to move the vertical position by transmitting the driving power of the lifting drive unit 220.

The lifting rolling roller 215 is rotatably installed on the upper part of the lifting block 213.

The lifting rolling roller 215 is always positioned to be in cloud contact in correspondence with the following lifting connection cam 225 in the configuration of the lifting driving unit 220. That is, the lifting block 213 of the lifting pickup unit 210 moves up and down according to whether or not the lifting drive unit 220 is pressed toward the lifting rolling roller 215.

The lifting pickup unit 210 includes a first buffering means 218 and a second buffering means 219 so as to exhibit a buffering function according to the vertical flow.

The first buffering means 218 is provided on the guide bar 214 of the lifting block 213, and is located between the support block 217 and the upper lifting block, and is vertical to the lifting block 213. It is structured to buffer movement. That is, the lowering operation of the lifting block 213 is buffered, but during the lifting operation, a quick return is achieved by the restoring force of the first buffering means 218.

The second buffer means 219 is provided between the adsorption means 211 and the lift block 213, and buffers the contact force applied to the adsorption means 211 when the lift block 213 is lowered. do.

The lift driving unit 220 is installed on the transfer panel 110 of the X-axis transfer unit 100, as shown in Figs. 2 and 3, and the power for the vertical flow of the lift pickup unit 210 As a configuration for applying, it is configured to be provided with a rotation drive shaft 221 and a lift drive motor 223, a lift connection cam 225.

The rotation drive shaft 221 is installed on the transfer panel 110, but is rotatably installed by the lift drive motor 223, and is positioned in a fixed axis state above the transfer panel 110 in the X-axis direction. To form an extension.

The elevating drive motor 223 is installed on the transfer panel 110 and is connected and coupled to correspond to one end of the rotation drive shaft 221 and drives to apply rotational power to the rotation drive shaft 221.

The elevating connection cam 225 is installed by engaging the rotation drive shaft 221 in an eccentric state.

The elevating connection cam 225 performs a function of converting the rotational motion of the rotational drive shaft 221 by the elevating drive motor 223 into a vertical linear motion of the elevating pickup unit 210.

The lifting connection cam 225 is rotated by the rotation drive shaft 221 applied from the lifting drive motor 223, but the outer periphery of the lifting connection cam 225 is the lifting pickup unit 210, that is, the lifting It is configured to be connected to the rolling roller 215 to rotate in a surface contact state. That is, the lifting pickup unit 210 is the lifting connection cam 225 eccentric with respect to the rotation drive shaft 221 of the rotation path of the lifting connection cam 225 in contact with the lifting rolling roller 215 A force pressed in the path of the lifting and lowering pickup unit 210 is driven downward.

The lift transfer unit 200 may collectively drive a plurality of lift pickup units 210 (four in FIG. 1 and two in FIGS. 2 and 3) from one lift driving unit 220 as a driving source. To be organized. That is, in the lift transfer unit 200, the lift pickup unit 210 is configured to be provided with a plurality on the transfer panel 110 of the X-axis transfer unit 100, and the lift drive unit 220 is one The lifting drive motor 223 and the rotation drive shaft 221 of the above are configured to have a plurality of lifting connection cams 225 on the rotation drive shaft 221 in correspondence with the plurality of lifting pickup units 210 Therefore, the movement of the lift transfer unit 200, that is, the lift pickup unit 210 and the lift drive unit 220 in the X-axis direction by the drive of the X-axis transfer unit 100 is configured to be driven collectively. A plurality of the lifting pickup units 210 are configured to be driven collectively by power transmission from the one lifting drive unit 220.

In addition, the elevating cam 225 of the elevating driving unit 220 among the elevating transfer units 200 is configured to implement a motion by dividing the operation of the elevating transfer unit 200 into a plurality as shown in FIG. It is also possible to do.

In the above, the elevating connection cam 225 forms a contact area with the elevating pickup unit 210 in a separate shape. For example, as shown in FIG. 4, the contact area of the lifting connection cam 225 is divided into "A area" and "B area", and the "A area" of the entire outer circumferential radius of the lifting connection cam 225 Since the outer circumferential length is longer than the "B area", the time that the flow of the lifting pickup unit 210 stays in the descending state in the "A area" according to the contact driving with the lifting connection cam 225 as shown in FIG. 5 Motion is implemented longer than the time of staying in the descending state in "B area".

As described above, when the operation of the lift and transfer unit 200 is divided into a plurality of motions, the electrode can be transferred to the electrode stacking process through the electrode alignment process at the position of the electrode magazine according to the driving type of the lift pickup unit 210. In this case, it is possible to expand the application area along with the functionality of electrode transfer by implementing a differentiated motion in each driving type.

That is, according to the electrode transfer device for manufacturing a secondary battery cell stack according to the present invention configured as described above, the lifting drive for picking up and feeding the electrode is controlled by a cam drive method, so that the stack is manufactured while preventing unnecessary delays in work. It is possible to shorten the tact time for the process and thereby improve the productivity of the product.

In addition, the present invention is configured to collectively control a plurality of lifting and vertical driving with a single driving source as well as collective driving in the X-axis direction for a plurality of lifting pickup units. It is possible to reduce maintenance cost, and to achieve operation stability and accuracy by collective operation.

In the above, a preferred embodiment of the electrode transfer device for manufacturing a secondary battery cell stack according to the present invention has been described, but the present invention is not limited thereto, and various modifications within the scope of the claims, the specification of the invention, and the accompanying drawings. It is possible to do so, and this also falls within the scope of the present invention.

100: X-axis transfer unit 110: transfer panel
200: elevating transfer unit 210: elevating pickup unit
211: adsorption means 213: lifting block
213a: upper lifting block 213b: lower lifting block
214: guide bar 215: lifting roller
217: support block 218: first buffer means
219: second buffering means 220: elevating drive unit
221: rotating drive shaft 223: lifting drive motor
225: elevating connection cam

Claims (5)

An X-axis transfer unit having a transfer panel at the front and supporting the transfer panel to move linearly in the left and right X-axis directions;
An elevating pickup unit positioned corresponding to the transfer panel of the X-axis transfer unit, but configured to adsorb an electrode at the bottom and flow in a vertical vertical straight direction, and a vertical flow of the elevating pickup unit installed on the transfer panel. Includes; a lift and transfer unit configured to include a lift drive unit for applying the power for,
The lifting drive unit of the lifting transfer unit includes a rotation drive shaft extending in the X-axis direction on the transfer panel and rotatably installed, a lifting drive motor applying rotational power to the rotation drive shaft, and installed on the rotation drive shaft. An electrode transfer device for manufacturing a secondary battery cell stack comprising an elevating connection cam that rotates in a connection contact state with the elevating pickup unit and converts a rotational motion into a vertical linear motion of the elevating pickup unit.
The method according to claim 1,
The lifting pick-up unit includes an adsorption means for generating an adsorption force so as to be able to pick up an electrode at the lower part, and a lifting block disposed at an upper and lower interval and connected by a pair of guide bars extending in a vertical direction and configured to move up and down. , An electrode transfer device for manufacturing a secondary battery cell stack comprising a lifting roller installed on the upper part of the lifting block and rotating in rolling contact with the lifting connection cam of the lifting drive unit.
The method according to claim 2,
In the lifting pickup unit, a first buffering means provided on the guide bar of the lifting block and buffering vertical movement of the lifting block, and a contact force applied to the suction means provided between the suction means and the lifting block Electrode transfer device for manufacturing a secondary battery cell stack comprising a second buffering means for buffering.
The method according to claim 1,
The lift pickup unit of the lift transfer unit is configured to include a plurality of units on the transfer panel of the X-axis transfer unit so that movement of the lift transfer unit in the X-axis direction is collectively driven,
An electrode transfer device for manufacturing a secondary battery cell stack, wherein the lift driving unit of the lift transfer unit is configured to have a plurality of lift connection cams on the rotation drive shaft in correspondence with the plurality of lift pickup units.
The method according to claim 1,
The elevating connection cam of the elevating driving unit is an electrode transfer device for manufacturing a secondary battery cell stack in which a contact area with the elevating pickup unit is formed in a divided shape for each driving type of the elevating pickup unit with respect to the electrode.

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