KR102287763B1 - Manufacturing system of battery cell - Google Patents

Abstract

The present invention relates to a battery cell manufacturing system, comprising: a battery cell manufacturing unit for manufacturing a battery cell by sealing the outer peripheral surface of a pouch in which an electrode assembly is accommodated; a battery cell transfer unit for transferring the battery cells manufactured by the battery cell manufacturing unit; a battery cell thickness inspection unit that measures the thickness of a sealing part on one side of the battery cell transferred to the battery cell transport unit and inspects whether there is a defect; and a discharge device for discharging the battery cells normally tested by the battery cell thickness inspection unit, wherein the battery cell thickness inspection unit adjusts the one-side sealing part of the battery cell transferred to the battery cell transfer unit to be positioned at a set position A thickness inspection device for measuring the thickness of the one-sided sealing part of the battery cell whose position is adjusted by the adjusting device and the position adjusting device, and comparing the measured one-side sealing part thickness value with the input sealing part reference value to check whether there is a defect. .

Description

Battery cell manufacturing system {MANUFACTURING SYSTEM OF BATTERY CELL}

The present invention relates to a battery cell manufacturing system, and more particularly, to a battery cell manufacturing system capable of automatically inspecting the thickness of a sealing part of a manufactured battery cell, and in particular, capable of total inspection.

In general, a secondary battery refers to a battery capable of charging and discharging, and the secondary battery (hereinafter referred to as 'battery cell') includes an electrode assembly, an electrolyte, and a pouch for accommodating the electrode assembly and the electrolyte. .

On the other hand, the battery cell applies a battery cell manufacturing system to increase productivity and efficiency, and the above-described battery cell manufacturing system manufactures an electrode assembly, accommodates the electrode assembly in a pouch, and seals the main surface of the pouch. manufacture the cell.

And the above-described battery cell manufacturing system inspects the thickness of the sealing part of the battery cell as one of quality evaluation of the manufactured battery cell.

However, in the battery cell manufacturing system described above, the thickness of the sealing part of the battery cell is manually inspected by the operator, and there is a problem in that accurate quality evaluation is impossible because the entire inspection is impossible.

Patent Registration No. 10-0958649

The present invention is to solve the above problems, and an object of the present invention is to automatically inspect the thickness of the sealing part of the manufactured battery cell, and in particular, a battery cell capable of increasing the accuracy of performance evaluation by performing a total inspection. To provide a manufacturing system.

A battery cell manufacturing unit for manufacturing a battery cell by sealing the outer peripheral surface of the pouch containing the electrode assembly according to the present invention for achieving the above object; a battery cell transfer unit for transferring the battery cells manufactured by the battery cell manufacturing unit; a battery cell thickness inspection unit that measures the thickness of a sealing part on one side of the battery cell transferred to the battery cell transport unit and inspects whether there is a defect; and a discharge device for discharging the battery cells normally tested by the battery cell thickness inspection unit, wherein the battery cell thickness inspection unit adjusts the one-side sealing part of the battery cell transferred to the battery cell transfer unit to be positioned at a set position It may include a thickness inspection site that measures the thickness of the one-sided sealing part of the battery cell whose position is adjusted by the adjusting device, and compares the measured one-sided sealing part thickness value with the input sealing part reference value to check whether there is a defect. .

The battery cell transport unit includes a transport device for transporting the battery cells manufactured by the battery cell manufacturing unit, and the battery cells transported by the transport device are disposed so that the sealing part on one side of the battery cell is seated on one surface in the longitudinal direction. The seating portion may include a protruding seating jig.

The position adjusting device supports or pressurizes a side surface adjusting member for controlling a lateral position of the battery cell by supporting the side surface of the battery cell disposed on the seating jig, and one longitudinal surface and the other surface of the battery cell to support or pressurize the battery. It may include an upper and lower adjustment member for adjusting the longitudinal position of the cell.

The side adjustment member may be provided on the seating portion, and the lateral position of the battery cell may be adjusted while supporting the side portion of the one-side sealing portion seated on the seating portion.

The upper and lower adjustment member may include a support member for supporting the sealing portion of one surface of the battery cell seated in the seating portion, and a pressing member for adjusting the upper and lower positions of the battery cell while pressing the sealing portion on the other side opposite to the one surface sealing portion. there is.

The support member may be fixed to the seating jig, and may be fixed in a position-adjustable manner toward the battery cell seated in the seating part.

The thickness inspection device includes a stripper for pressing and fixing the sealing part on one side of the battery cell seated in the seating part, a thickness measuring sensor for measuring the thickness of the one side sealing part fixed by the stripper, and the thickness measuring sensor. It may include an inspection member for inspecting whether there is a defect by comparing the thickness value and the input reference value.

The thickness measuring sensor has a descending distance value (α) from the initial position to contacting the one-side sealing part seated on the seating part, and a falling distance value from the initial position to contacting the seating part (β) can be compared to calculate the thickness value (γ) of the one-side sealing part.

The thickness measuring sensor may be in contact with the sealing part on one side of the battery cell seated on the seating part through the open hole formed in the stripper.

The thickness measuring sensor is a descended distance value (α) from the initial position to contact the stripper fixed to the one-sided sealing part seated in the seating part, and the one-sided sealing part in the initial position to the stripper supported in the seating part without The thickness value (γ) of the one-side sealing part can be calculated by comparing the descending distance value (β) before contact.

The stripper or the thickness measuring sensor may be lowered by a hydraulic device or returned to its original position.

The conveying device may be provided as a conveyor belt.

It may further include a recovery device for collecting the defective battery cells tested as defective by the failure measuring device so as not to be discharged to the discharge device.

The battery cell manufacturing method of the battery cell manufacturing system according to the present invention having such a configuration includes: a battery cell manufacturing step (S10) of manufacturing a battery cell by sealing the outer circumferential surface of the pouch in which the electrode assembly is accommodated; a battery cell transfer step (S20) in which the battery cells manufactured in the battery cell manufacturing step are transferred; and a battery cell thickness inspection step (S30) of measuring the thickness of the sealing part of one side of the battery cell transferred in the battery cell transfer step to check whether there is a defect, wherein the battery cell thickness inspection step (S30) includes the battery cell transfer Position adjustment step (S31) of adjusting the one-side sealing part of the battery cell transferred in the step to be positioned at a set position, measuring the thickness of the one-side sealing part of the battery cell whose position is adjusted, and measuring the measured one-side sealing part thickness value and the input sealing part It may include a thickness inspection step (S32) of comparing the reference value to check whether there is a defect, and a battery cell discharging step (S33) of discharging the battery cells tested normally in the thickness inspection process.

The position adjustment process (S31) is a side adjustment process of controlling the lateral position of the battery cell by supporting the side surface of the battery cell, and the length of the battery cell by supporting or pressing one longitudinal surface and the other surface of the battery cell It may include an upper and lower adjustment process for adjusting the direction position.

The thickness inspection process (S32) is a fixing process of pressing and fixing the one-side sealing part of the battery cell transferred in the battery cell transfer step, a measuring process of measuring the thickness of the fixed one-side sealing part, the measured thickness value and the input reference value It may include an inspection process of inspecting whether there is a defect by comparison.

The present invention has the following effects.

First: Since the battery cell manufacturing system of the present invention includes a battery cell thickness inspection unit, the thickness of the sealing part of the manufactured battery cell can be inspected in real time, and in particular, it is possible to perform full inspection, thereby increasing the accuracy of performance evaluation.

Second: the battery cell thickness inspection unit of the present invention can uniformly align the positions of the manufactured battery cells by including the position adjusting device and the thickness inspection device and can inspect the thickness of the sealing portion at the same position.

Third: the position adjusting device of the present invention can more accurately align the positions of the irregularly transported battery cells by including the side adjusting member and the upper and lower adjusting members.

Fourth: The thickness inspection apparatus of the present invention can be inspected for defects by more accurately measuring the thickness of the sealing part of the manufactured battery cell by including a stripper, a thickness measuring sensor, and an inspection member.

Fifth: The battery cell manufacturing system of the present invention includes a battery cell transfer unit, wherein the battery cell transfer unit includes a transfer device and a seating jig to ensure stability when measuring the thickness of the sealing part of the battery cell as the manufactured battery cell is stably disposed. can be raised

Sixth: Since the battery cell manufacturing system of the present invention includes a discharge device for discharging normal battery cells and a recovery device for recovering defective battery cells, it is possible to significantly reduce the continuity of work and the occurrence of product defects.

1 is a view schematically showing a battery cell manufacturing system according to a first embodiment of the present invention.
2 is a lateral perspective view showing a battery cell transfer unit and a battery cell thickness inspection unit of the battery cell manufacturing system according to the first embodiment of the present invention.
3 is a side view schematically showing the battery cell transfer unit in FIG. 2 .
4 is a front perspective view showing a battery cell transfer unit and a battery cell thickness inspection unit of the battery cell manufacturing system according to the first embodiment of the present invention.
5 is an enlarged view of part 'A' shown in FIG.
6 is a view showing a side adjusting member of the battery cell transfer unit according to the first embodiment of the present invention.
7 is a view showing an upper and lower surface adjusting member of the battery cell transfer unit according to the first embodiment of the present invention.
8 is a view showing a state of use of the battery cell thickness inspection unit according to the first embodiment of the present invention.
9 is a view showing a part of a battery cell manufacturing system according to a second embodiment of the present invention.
10 is a view showing a part of a battery cell manufacturing system according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

[First embodiment of the present invention]

In the battery cell manufacturing system according to the first embodiment of the present invention, as shown in FIG. 1 , the battery cell manufacturing unit 100 for manufacturing the battery cell 10 by sealing the outer circumferential surface of the pouch in which the electrode assembly is accommodated, the battery By measuring the thickness of the battery cell transport unit 200 to which the battery cell 10 manufactured by the cell manufacturing unit 100 is transported, and the one-side sealing part 11 of the battery cell 10 transported to the battery cell transport unit 200 , It includes a battery cell thickness inspection unit 300 for inspecting whether there is a defect, and a discharge device 400 for discharging the battery cells 10 tested normally by the battery cell thickness inspection unit 300 to a post-processing line (not shown). do.

Hereinafter, a battery cell manufacturing system according to a first embodiment of the present invention will be described in more detail.

Battery cell manufacturing department

The battery cell manufacturing unit 100 includes an electrode assembly manufacturing apparatus, a pouch manufacturing apparatus, and a sealing apparatus, and the electrode assembly manufacturing apparatus manufactures an electrode assembly by alternately stacking a plurality of electrodes and a plurality of separators. And, the pouch manufacturing apparatus manufactures a pouch forming an electrode assembly accommodating space on the corresponding surfaces of the upper case and the lower case by processing the upper case and the lower case. And the sealing device accommodates the electrode assembly in the receiving space of the pouch, and then heat-seals the edge of the pouch to seal it.

The battery cell manufacturing unit 100 may automatically manufacture the battery cell 10 through the electrode assembly manufacturing apparatus, the pouch manufacturing apparatus, and the sealing apparatus.

battery cell transfer unit

The battery cell transport unit 200 is for transporting and aligning the battery cells manufactured by the battery cell manufacturing unit, as shown in FIGS. 2 and 3 .

That is, the battery cell transport unit 200 includes a transport device 210 for transporting the battery cells 10 manufactured by the battery cell manufacturing unit 100 and the battery cells 10 transported by the transport device 210 . It is disposed, and includes a seating jig 220 from which the seating part 221 protrudes so that the sealing part 11 on one side of the battery cell 10 is mounted on one surface in the longitudinal direction.

The transfer device 210 transfers the battery cell 10 manufactured by the battery cell manufacturing unit 100 to the seating jig 220 . Here, the transfer device 210 may be provided as a conveyor belt, thereby sequentially and stably transferring the plurality of battery cells 10 .

In addition, the transfer device 210 transfers the battery cell 10, but the one side sealing part 11 of the battery cell 10 faces one surface (the upper surface when viewed in FIG. 2) of the seating jig 220. It is transferred, thereby increasing the efficiency when measuring the thickness of the one-side sealing part 11 . On the other hand, the electrode lead 12 formed in the battery cell 10 is drawn out to the side of the battery cell 10 orthogonal to the sealing part 11 on one side.

The seating jig 220 has a plate shape with a flat top surface, and a seating part 221 protrudes so that the one-side sealing part 11 of the battery cell 10 is mounted on one surface (the top surface when viewed in FIG. 2 ). The upper surface of the part 221 has a flat horizontal surface so that the one-side sealing part 11 is surface-adhesive.

On the other hand, on the other side (lower surface as seen in FIG. 2 ) of the seating jig 220 on which the battery cell 10 is disposed, a transfer member 222 for moving or stopping the battery cell 10 at regular intervals is further provided. A plurality of battery cells 10 may be sequentially inserted into the battery cell thickness inspection unit 300 at a set time by the transfer member 222 , thereby increasing the continuity of the inspection operation.

In such a battery cell transfer unit 200 , the manufactured battery cell 10 is stably disposed, thereby increasing the accuracy of performance evaluation when inspecting the thickness of the sealing unit 11 on one side of the battery cell 10 .

Battery cell thickness inspection unit

The battery cell thickness inspection unit 300 is to measure the thickness of the sealing portion of one surface of the battery cell transferred to the battery cell transfer unit to inspect whether there is a defect.

That is, the battery cell thickness inspection unit 300 is a battery cell ( The thickness of the one-sided sealing part 11 of the battery cell 10 whose position is adjusted by the position adjusting device 310 and the position adjusting device 310 for adjusting the one-side sealing part 11 of 10) to be positioned at the set position. and a thickness inspection device 320 that compares the measured and measured thickness value of the one-side sealing part 11 with a reference value of the input sealing part to check whether there is a defect.

Referring to FIGS. 6 and 7 , the position adjusting device 310 aligns the sealing part of one side of the battery cell to be accurately positioned on the seating part. That is, the position adjusting device 310 includes a side adjustment member 311 for adjusting the lateral position of the battery cell 10 , and an upper and lower surface adjusting member 312 for adjusting the vertical position of the battery cell 10 .

As shown in FIG. 6 , the side adjustment member 311 is fixed to the upper surface of the seating jig 220 , and the side of the battery cell 10 disposed on the seating jig 220 is supported while the battery cell 10 . uniformly adjust the lateral position of At this time, a plurality of side adjustment members 311 may be provided in the longitudinal direction (up and down direction when viewed in FIG. 6 ) of the seating jig 220 , thereby uniformly adjusting the lateral position of the battery cell 10 and at the same time The inclined angle of the battery cell 10 can be uniformly adjusted.

On the other hand, the side adjustment member 311 may be provided in a square shape, and the battery cell 10 is supported on the end surface perpendicular to this, and the position can be more stably adjusted.

On the other hand, the side control member 311 is fixed to the seating portion 221, and one edge is formed with a contact groove 311a so that one edge of the battery cell 10 is in close contact, and the contact groove 311a is a battery cell ( 10), the position of the battery cell 10 in the lateral direction as well as in the vertical direction ('U' direction shown in FIGS. 5 and 6 ) of the battery cell 10 is adjusted as well as the position of the battery cell 10 is inserted.

On the other hand, the side adjustment member 311 can be fixed to the upper surface of the seating jig 220 so that the position can be adjusted, thereby conveniently adjusting the position of the side adjustment member 311 according to the size or thickness of the battery cell 10 . Can be used.

As shown in FIG. 7 , the upper and lower control members 312 support or press one longitudinal surface and the other surface of the battery cell 10 to adjust the vertical position of the battery cell 10 .

That is, the upper and lower control member 312 is a support member 312a for supporting one surface sealing part 11 of the battery cell 10 seated on the seating part 221 , and the other surface sealing part opposite to the one surface sealing part 11 . It includes a pressing member 312b for adjusting the upper and lower positions of the battery cell 10 while pressing the part 13 .

Here, the support member 312a is fixed to the upper surface of the seating jig 220 in a direction in which the support surface 312a-1 faces the battery cell 10, and the pressing member 312b is supported on the upper surface of the seating jig 220. The surface 312b - 1 is provided to move forward or backward in the direction toward the battery cell 10 .

When the battery cell 10 is disposed on the seating jig 220 between the support member 312a and the pressing member 312b, the support member 312a moves toward the battery cell 10. It moves to the set position and then stops. Then, the pressing member 312b presses the sealing part 13 of the other surface of the battery cell 10 while advancing toward the battery cell 10 . Then, as the battery cell 10 is pressed between the support surface 312a-1 of the support member 312a and the support surface 312b-1 of the pressing member 312b, the vertical position of the battery cell 10 is adjusted. can

At this time, the pressing member 312b stops when resistance of a predetermined pressure or more is generated from the battery cell 10 , thereby preventing the sealing parts 11 and 13 of the battery cell 10 from being folded.

On the other hand, the support member 312a may be fixed in a position-adjustable manner toward the battery cell 10 seated on the seating part 221 . That is, the position can be adjusted according to the size and thickness of the battery cell 10 , and thus compatibility can be improved.

In this way, the battery cell thickness inspection unit 300 can always align the positions of the battery cells 10 disposed on the seating jig 220 in the same way, and thus the thickness measurement portions of the battery cells 10 can be aligned equally. It is possible to increase the accuracy of performance evaluation. In particular, it is possible to automatically adjust the position of the battery cell 10 to increase the continuity of the operation.

The thickness inspection device 320 includes a stripper 321 for pressing and fixing the one-side sealing part 11 of the battery cell 10 seated on the seating part 221, as shown in FIGS. 4 and 5; The thickness measurement sensor 322 for measuring the thickness of the one-side sealing part 11 fixed by the stripper 321, and the thickness value measured by the thickness measurement sensor 322 are compared with the input reference value to check whether there is a defect and an inspection member 323 that

The stripper 321 is for fixing the one-side sealing part of the battery cell, and is provided on the one-side sealing part 11 and descends toward the one-side sealing part 11. A pressing part for pressing and fixing the one-side sealing part 11 321a is provided, and an open hole 321b is formed in the pressing part 321a to allow the thickness measuring sensor 322 to pass therethrough. That is, the thickness measuring sensor 322 is in contact with the sealing part 11 on one side of the battery cell 10 seated on the seating part 221 through the open hole 321b formed in the stripper 321 .

The thickness measuring sensor 322 is for measuring the thickness of the one-side sealing part of the battery cell, and is provided on the one-side sealing part 11 and through the descending distance until it comes into contact with the one-side sealing part 11, the one-side sealing part ( 11) Measure the thickness.

In more detail, as shown in FIG. 8, the thickness measuring sensor 322 is a one-sided sealing part 11 seated on the seating part 221 in the initial position (the position of the lower end of the thickness measuring sensor 322). One-side sealing part 11 by comparing the descending distance value (α) before contact with the descending distance value (β) from the initial position to contacting the seating part 221 without the one-side sealing part 11 Calculate the thickness value (γ) of the battery cell 10, it is possible to more simply and accurately measure the thickness of the sealing portion 11 on one side of the battery cell 10.

For example, in the thickness measuring sensor 322, the descending distance value from the initial position (the position of the lower end of the thickness measuring sensor 322) to the one-side sealing part 11 seated in the seating part 221 is 100 mm, When the descending distance value β from the initial position to contact the seating part 221 without the one-side sealing part 11 is 105 mm, the thickness value γ of the one-side sealing part 11 is 5 mm. .

The inspection member 323 compares the thickness value measured by the thickness measurement sensor 322 with the input reference value to inspect whether there is a defect. That is, the inspection member 323 is inspected normally if the thickness value measured by the thickness measurement sensor 322 is located within the error range of the input reference value, and is inspected as defective if it is located outside the error range of the input reference value. .

In this way, the thickness inspection device 320 can measure the thickness of the one-side sealing part 11 of the battery cell 10 while the stripper 321, the thickness measuring sensor 322 and the inspection member 323 are sequentially operated, Accordingly, it is possible to inspect whether the entire manufactured battery cell 10 is defective.

On the other hand, the thickness inspection device 320 may further include a hydraulic device 324 for adjusting the pressure of the stripper 310 and the thickness measuring sensor 322 . That is, the hydraulic device 324 adjusts the pressure so that the stripper 310 and the thickness measuring sensor 322 do not over-pressurize or weakly press the one-side sealing part 11 .

The battery cell thickness inspection unit 300 having such a configuration can accurately measure the thickness of the sealing part of the manufactured battery cell, and in particular, it is possible to inspect all the manufactured battery cells, thereby increasing the accuracy of performance evaluation.

exhaust device

Referring to FIG. 1 , the discharge device 400 transfers the normally tested battery cell 10 discharged from the seating jig 220 to the post-processing line. In this case, the discharge device 400 may be provided as a conveyor belt, and thus the battery cells may be more stably transported.

Here, a recovery device 500 for recovering the battery cells 10 tested as defective may be further included.

recovery device

The recovery device 500 collects the defective battery cells 10a tested as defective by the thickness testing device 320 so that they are not discharged to the discharge device 400 . In this case, the recovery device 500 may be provided with a conveyor belt and a robot arm that moves defective battery cells to the conveyor belt.

Therefore, the battery cell manufacturing system according to the first embodiment of the present invention can automatically inspect the thickness of the sealing part of the manufactured battery cell 10, and in particular, it is possible to increase the accuracy of performance evaluation by performing a total inspection. .

Hereinafter, a battery cell manufacturing method using the battery cell manufacturing system according to the first embodiment of the present invention will be described.

The battery cell manufacturing method according to the first embodiment of the present invention includes a battery cell manufacturing step (S10), a battery cell transfer step (S20), and a battery cell thickness inspection step (S30).

In the battery cell manufacturing step (S10), referring to FIG. 1 , the battery cell 10 is manufactured by sealing the outer peripheral surface of the pouch in which the electrode assembly is accommodated. In this case, the battery cell manufacturing apparatus 100 is used.

That is, the battery cell manufacturing apparatus 100 applied to the battery cell manufacturing step S10 alternately stacks a plurality of electrodes and a plurality of separators to manufacture an electrode assembly. And the upper case and the lower case are processed to manufacture a pouch forming an electrode assembly accommodating space. Then, the electrode assembly is accommodated in the receiving space of the pouch, and then the edge of the pouch is thermally fused and sealed. When this process is completed, the battery cell 10 can be obtained.

In the battery cell transfer step (S20), the battery cell 10 manufactured in the battery cell manufacturing step (S10) is transferred and arranged to measure the thickness of the sealing part. In this case, the battery cell transfer unit 200 is used.

That is, the battery cell transfer unit 200 applied to the battery cell transfer step (S20) transfers the battery cell 10 manufactured in the battery cell manufacturing step (S10) to the seating jig 220 using the transfer device 210, , the transferred battery cell 10 is disposed so that the one-side sealing part 11 is seated on the seating part 221 of the seating jig 220 .

In the battery cell thickness inspection step (S30), the battery cells 10 transferred in the battery cell transfer step (S20) are aligned, and the thickness of the one surface sealing part 11 of the aligned battery cells 10 is measured to check whether there is a defect. do. In this case, the battery cell thickness inspection unit 300 is used.

That is, the battery cell thickness inspection unit 300 applied to the battery cell thickness inspection step (S30) is positioned to position the one-side sealing part 11 of the battery cell 10 transferred in the battery cell transfer step (S20) to a set position. The position adjustment process (S31) of adjusting the position through the device 310, the thickness of the one-side sealing part 11 of the battery cell 10 whose position is adjusted is measured through the thickness inspection device 320, and the measured one-side sealing part thickness value A thickness inspection process (S32) of inspecting whether there is a defect by comparing the input sealing unit reference value with a battery cell discharge process (S33) of discharging the battery cells tested normally in the thickness inspection process (S32) through the discharge device (400) ) is included.

The position adjustment process (S31) is a side adjustment process for controlling the lateral position of the battery cell 10 by supporting the side surface of the battery cell 10, and by supporting or pressing one longitudinal surface and the other surface of the battery cell 10 in the longitudinal direction. It includes an upper and lower adjustment process for adjusting the longitudinal position of the battery cell 10 , in which case the position adjusting device 310 is used.

That is, the position adjusting device 310 applied to the position adjusting process (S31) adjusts the lateral position of the battery cell 10 seated on the seating jig 220 through the side adjusting member 311, and the upper and lower adjusting members ( 312) to adjust the vertical position of the battery cell 10 .

The thickness inspection process (S32) is a fixing process of pressing and fixing the one-side sealing part 11 of the battery cell 10 transferred in the battery cell transfer step, a measuring process of measuring the thickness of the fixed one-side sealing part 11, It includes an inspection process of comparing the measured thickness value with the input reference value to check whether there is a defect. At this time, the thickness inspection device 320 is used.

That is, the thickness inspection device 320 applied to the thickness inspection process (S32) presses and fixes the one-side sealing part 11 of the battery cell 10 seated on the seating part 221 through the stripper 321, and the thickness Measuring the thickness of the one-side sealing part 11 fixed by the stripper 321 through the measuring sensor 322, the thickness value measured by the thickness measuring sensor 322 through the inspection member 323 and the input reference value Compare and check for defects.

Here, the thickness measuring sensor 322 is, as shown in FIG. 8, from the initial position (the position of the lower end of the thickness measuring sensor 322) to the one-side sealing part 11 seated on the seating part 221 until it comes into contact. By comparing the descended distance value (α) and the descending distance value (β) from the initial position to the contact with the seating part 221 without the one-side sealing part 11, the one-side sealing part thickness value (γ) is calculated do.

In the battery cell discharging process ( S33 ), the normally tested battery cells are transferred to the post-processing line using the discharging device 400 .

On the other hand, the method further includes a battery cell recovery process ( S34 ) of recovering the battery cells tested as defective so that they do not flow into the battery cell discharging process ( S33 ), and the recovery device 500 applied to the battery cell recovery process ( S34 ) is defective. The tested battery cells 10 are recovered before they are introduced into the discharge device 400 .

Hereinafter, in describing another embodiment according to the present invention, the same reference numerals are used for components having the same configuration and functions as those of the above-described embodiment, and overlapping descriptions are omitted.

[Second embodiment of the present invention]

As shown in FIG. 9 , the battery cell manufacturing system according to the second embodiment of the present invention includes a thickness inspection device 320 , wherein the thickness inspection device 320 is a battery cell seated on a mounting part 221 . A thickness measuring sensor 322 for measuring the thickness of a stripper 321 for pressing and fixing the one-side sealing part 11 of (10) and the one-side sealing part 11 fixed by the stripper 321 322, and thickness measurement and an inspection member 323 that compares the thickness value measured by the sensor 322 with the input reference value to check whether there is a defect.

Here, the thickness measuring sensor 322 may measure the thickness of the one-side sealing part 11 by using the distance value that has fallen until it comes into contact with the stripper 321 having the one-side sealing part 11 fixed.

That is, the thickness measuring sensor 322 is a descending distance value (α) until it comes into contact with the stripper 321 fixed to the one-side sealing part 11 seated on the seating part 221 in the initial position, and one surface from the initial position. It is possible to calculate the thickness value (γ) of the sealing part on one side by comparing the distance value (β) that has fallen until it comes into contact with the stripper supported on the seating part without the sealing part.

For example, the thickness measuring sensor 322 has a lowered distance value (α) from the initial position to contact the stripper fixed to the one-side sealing part seated on the seating part is 90 mm, and the seating part without the one-side sealing part from the initial position If the descending distance value (β) until it comes into contact with the stripper supported on the surface is 95mm, the thickness value (γ) of the one-side sealing part is 95mm-90mm = 5mm.

[Third embodiment of the present invention]

As shown in FIG. 10 , the battery cell manufacturing system according to the third embodiment of the present invention includes an upper and lower adjusting member 312 ′, and the upper and lower adjusting member 312 ′ is disposed in the longitudinal direction of the battery cell 10 . It includes a support member 312a and a pressing member 312b for controlling the vertical position of the battery cell 10 by supporting or pressing one surface and the other surface.

On the other hand, the battery cell 10 is provided with first and second electrode leads 12 , the first and second electrode leads 12 are both side surfaces of the battery cell 10 perpendicular to the sealing part 11 on one side. are provided to be drawn out respectively.

Here, the support member 312a supports the first and second electrode leads 11 having more rigidity than supporting the sealing part 11 of the battery cell 10 , thereby obtaining a more stable support force.

That is, the upper and lower control members 312' are support members 312a provided with support bars 312-2 for supporting the first and second electrode leads 12 drawn out in both directions of the battery cells disposed on the seating jig. ) and a pressing member 312b for pressing the sealing part 13 of the other surface of the battery cell 10 supported by the support member 312a.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and various embodiments derived from the meaning and scope of the claims and their equivalent concepts are possible.

100: battery cell manufacturing unit
200: battery cell transfer unit
300: battery cell thickness inspection unit
400: exhaust device
500: recovery device

Claims (16)

A battery cell manufacturing unit for manufacturing a battery cell by sealing the outer peripheral surface of the pouch in which the electrode assembly is accommodated;
a battery cell transfer unit for transferring the battery cells manufactured by the battery cell manufacturing unit;
a battery cell thickness inspection unit that measures the thickness of a sealing part on one side of the battery cell transferred to the battery cell transport unit and inspects whether there is a defect; and
and a discharge device for discharging the battery cells tested normally by the battery cell thickness inspection unit,
The battery cell transport unit includes a transport device for transporting the battery cells manufactured by the battery cell manufacturing unit, and the battery cells transported by the transport device are disposed so that the sealing part on one side of the battery cell is seated on one surface in the longitudinal direction. The seating part includes a protruding seating jig, and the upper surface of the seating part has a flat horizontal surface so that the one-side sealing part is surface-contacted,
The battery cell thickness inspection unit is a position adjusting device for adjusting the one-side sealing part of the battery cell transferred to the battery cell transfer unit to be positioned at a set position, measuring the thickness of the one-side sealing part of the battery cell whose position is adjusted by the position adjusting device, A battery cell manufacturing system comprising a thickness inspection device that compares the measured one-side sealing part thickness value with the input sealing part reference value to check whether there is a defect. delete The method according to claim 1,
The position adjusting device is a side adjusting member for controlling the lateral position of the battery cell by supporting the side of the battery cell disposed on the seating jig, and
A battery cell manufacturing system comprising an upper and lower surface adjusting member for controlling the longitudinal position of the battery cell by supporting or pressing one surface and the other surface in the longitudinal direction of the battery cell. 4. The method according to claim 3,
The side adjustment member is provided in the seating part, and while supporting the side of the one-side sealing part seated on the seating part, the lateral position of the battery cell is adjusted in a battery cell manufacturing system. 4. The method according to claim 3,
The upper and lower control member is a support member for supporting the sealing portion of one surface of the battery cell seated in the seating portion, and a pressing member for adjusting the upper and lower positions of the battery cell while pressing the sealing portion on the other side opposite to the one surface sealing portion Battery comprising: cell manufacturing system. 6. The method of claim 5,
The support member is fixed to the seating jig, the battery cell manufacturing system is fixed to the position controllable toward the battery cell seated in the seating portion. The method according to claim 1,
The thickness inspection device includes a stripper for pressing and fixing the sealing part on one side of the battery cell seated in the seating part, a thickness measuring sensor for measuring the thickness of the one side sealing part fixed by the stripper, and the thickness measuring sensor. A battery cell manufacturing system including an inspection member that compares the thickness value and the input reference value to inspect whether there is a defect. 8. The method of claim 7,
The thickness measuring sensor has a descending distance value (α) from the initial position to contacting the one-side sealing part seated on the seating part, and a falling distance value from the initial position to contacting the seating part (β) A battery cell manufacturing system for calculating the thickness value (γ) of the one-side sealing part by comparing the 9. The method of claim 8,
The thickness measuring sensor is a battery cell manufacturing system that is in contact with the sealing part on one side of the battery cell seated on the seating part through the open hole formed in the stripper. 8. The method of claim 7,
The thickness measuring sensor is a descended distance value (α) from the initial position to contact the stripper fixed to the one-sided sealing part seated in the seating part, and the one-sided sealing part in the initial position to the stripper supported in the seating part without A battery cell manufacturing system for calculating the thickness value (γ) of the one-side sealing part by comparing the descending distance value (β) before contact. 8. The method of claim 7,
The stripper or the thickness measuring sensor is lowered by a hydraulic device or a battery cell manufacturing system to return to the original position. The method according to claim 1,
The transfer device is a battery cell manufacturing system provided with a conveyor belt. The method according to claim 1,
The battery cell manufacturing system further comprising a recovery device for collecting the defective battery cells tested as defective by the thickness inspection device so as not to be discharged to the discharge device. A battery cell manufacturing step (S10) of manufacturing a battery cell by sealing the outer peripheral surface of the pouch in which the electrode assembly is accommodated;
a battery cell transfer step (S20) in which the battery cells manufactured in the battery cell manufacturing step are transferred;
and a battery cell thickness inspection step (S30) of measuring the thickness of the sealing part on one side of the battery cell transferred in the battery cell transfer step and checking whether there is a defect,
The battery cell transfer step (S20) is performed by a transfer device including a seating jig in which a seating part protrudes so that the one-side sealing part of the battery cell is mounted on one surface in the longitudinal direction, and the one-side sealing part of the battery cell is the seating jig. It is seated on the upper surface of the seating part of the
The battery cell thickness inspection step (S30) is a position adjustment process (S31) of adjusting the one-side sealing part of the battery cell transferred in the battery cell transferring step to be positioned at a set position, the thickness of the one-side sealing part of the battery cell whose position is adjusted A thickness inspection process (S32) of measuring and comparing the measured one-side sealing part thickness value with the input sealing part reference value to check whether there is a defect, a battery cell discharge process of discharging the battery cells tested normally in the thickness inspection process ( S33), including a battery cell manufacturing method. 15. The method of claim 14,
The position adjustment process (S31) is a side adjustment process of controlling the lateral position of the battery cell by supporting the side surface of the battery cell, and the length of the battery cell by supporting or pressing one longitudinal surface and the other surface of the battery cell A method for manufacturing a battery cell comprising an upper and lower surface adjustment process for adjusting a direction position. 15. The method of claim 14,
The thickness inspection process (S32) is a fixing process of pressing and fixing the one-side sealing part of the battery cell transferred in the battery cell transfer step, a measuring process of measuring the thickness of the fixed one-side sealing part, the measured thickness value and the input reference value A battery cell manufacturing method comprising an inspection process of comparing and inspecting whether there is a defect.

Images