Title of the invention: Pouch-type case forming apparatus and method for manufacturing pouch-type case using the same
technical field
[One]
The present invention claims the benefit of priority based on the Republic of Korea Patent Application No. 2019-0153141 dated November 26, 2019, and all contents disclosed in the literature of the Korean patent application are incorporated as a part of this specification.
[2]
The present invention relates to a pouch-type case forming apparatus and a method for manufacturing a pouch-type case using the same. Specifically, it relates to a two-cavity pouch forming apparatus for forming a pouch-type case having a terrace step and a method for manufacturing a pouch-type case having a terrace step using the same.
background
[3]
The pouch-type battery is manufactured by molding an aluminum laminate sheet and accommodating the electrode assembly therein. Since the aluminum laminate sheet is easy to deform, it can be manufactured in various shapes, and because it is lightweight, various types of pouch-type battery cases can be produced.
[4]
A pouch-type case that is often used for batteries is made of a flexible packaging material such as an aluminum laminate sheet. The pouch-type case consists of a case body including a concave-shaped accommodating part on which the electrode assembly can be seated, and a cover connected to one side of the body.
[5]
It is manufactured by seating the electrode assembly in the receiving part, covering the cover, and thermally sealing the contact part with the body, and a sealing surplus (terrace part) is formed in the sealing part where the positive electrode tabs and the negative electrode tab are located.
[6]
Electronic devices are gradually becoming smaller and thinner, and accordingly, the thickness of the pouch-type battery is also becoming very thin. If the terrace portion is bent while the PCM is mounted, a problem of increasing the thickness of the battery may occur. When an insulating tape is added around the terrace portion as necessary, the overall thickness is increased, so it is necessary to minimize unnecessary space wastage.
[7]
The rear surface of the terrace part and the upper part of the rear upper part of the electrode assembly housing part are recessed together to form a terrace step having a step of a predetermined thickness, and the position where the PCM is conventionally mounted is changed to the terrace step part, or insulation along the terrace step part A technique for solving problems such as an increase in thickness by adding a tape is being used.
[8]
In forming the terrace step with the above, in the prior art, the electrode assembly welded with the electrode lead is put in a laminate sheet, side folded for sealing the side part, fixed to a jig, and the terrace part is pressed with a press to form a terrace step, but the side folding is thereby There is a problem that a defect occurs in one area.
[9]
Patent Document 1 provides a method of forming a terrace step portion in a pouch of a pouch-type secondary battery before cell assembly. Patent Document 1 has an advantage in that side folding sagging, which is a problem in a method of forming a back terrace portion after cell assembly, does not occur.
[10]
The method of Patent Document 1 includes the steps of forming a cup in which an electrode assembly is accommodated by passing through a press composed of an upper punch, a lower die, and a stripper on the side of the punch; and forming a terrace step in a stepwise manner on a portion of the terrace connected to the cup, and this is done before assembling the cell. 1 shows an assembling step of a terrace step according to Patent Document 1 as an example.
[11]
In Patent Document 1, after accommodating the electrode assembly, a terrace step portion is formed through a separate pressurization in the final sealing step (refer to step (d) of FIG. 1 ). In the case of adding the process of forming the case itself through this separate pressurization in the process of manufacturing the pouch-type battery, there is a problem in that the manufacturing apparatus and process become complicated.
[12]
Patent Documents 2 and 3 are different from Patent Document 1 in that the terrace step is preformed, but a fold portion of the pouch is absolutely required, and thus, there is a disadvantage in that it is vulnerable to the occurrence of wrinkles.
[13]
2 and 3 are cross-sectional views of the conventional molding apparatus 100 in the absence of a terrace step and a perspective view of a pouch-type case 150 manufactured using the same.
[14]
2 and 3 , the pouch-type case 150 is placed on the molding apparatus base 110 and then pressed by the molding apparatus case frame 120 to form a housing in which the electrode assembly 160 is placed. The electrode assembly 160 may be placed in the receiving unit and a portion corresponding to the upper surface of the pouch-type case may be folded to seal the case. In this case, the terrace step is not formed in the portion corresponding to the circle portion of the dotted line. The electrode assembly 160 is accommodated only in the lower accommodating part 102, and the pouch-type case 150 has only the upper cover 106 without the accommodating part thereon. The pouch-type case 150 is sealed after the outer peripheral portion 156 is coupled.
[15]
Since the terrace step is not formed in FIG. 2 , the thickness of the electrode assembly 160 corresponds to 190 .
[16]
4 and 5 are a cross-sectional view of a conventional molding apparatus 200 having two cavities for manufacturing a pouch-type case having a terrace step and a perspective view of a pouch-type case 250 manufactured using the same.
[17]
In the case of FIG. 4, the pouch-type case 250 is placed on the molding apparatus base 210 and then pressed by the two molding apparatus case frames 220 and 240 to accommodate the electrode assemblies 260, accommodating parts 202 and 206. is formed Put the electrode assembly 260 into the lower receiving portion 202, fold the portion including the upper receiving portion 206 of the pouch-type case 250 to combine with the lower receiving portion 202 and seal the outer peripheral portion 256 have. In this case, although the terrace step is formed, dents and wrinkles are generated in the pouch folding part, which is a part corresponding to the circle part of the dotted line.
[18]
In the case of FIGS. 4 and 5 , since the portion where the electrode assembly is accommodated is divided by the terrace step, the thickness of the electrode assembly that can be accommodated in the pouch-type case 250 is the sum of 290a and 290b.
[19]
Until now, such a problem has not been solved when molding a pouch-type case having a terrace step.
[20]
Republic of Korea Patent Publication No. 2018-0083124 (2018.07.20) ('Patent Document 1')
[21]
Republic of Korea Patent Publication No. 2018-0055427 (2018.05.25) ('Patent Document 2')
[22]
Republic of Korea Patent Publication No. 2019-0090153 (2019.08.01) ('Patent Document 3')
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[23]
The present invention is to solve the above problems, in a pouch-type case having a terrace step, a pouch-type case forming apparatus without dents and wrinkles in the pouch folding part, a method for manufacturing a pouch-type case using the same, and the forming apparatus An object of the present invention is to provide a pouch-type case manufactured by
means of solving the problem
[24]
The present invention for solving the above problems is to pressurize the lower accommodating part of the pouch-type case for accommodating the electrode assembly therein and the pouch-type case upper accommodating part for accommodating the electrode assembly therein while continuously connected to the lower accommodating part. a molding apparatus base provided with a groove for manufacturing;
[25]
In the pouch-type case molding apparatus comprising a; a shape corresponding to the groove of the molding apparatus base, the molding apparatus lower frame and the molding apparatus upper frame provided at the bottom
[26]
The molding apparatus base may include: an upper surface start part of the molding apparatus base of a plane inclined downward at a predetermined angle as one end of the molding apparatus base;
[27]
a side wall continuously connected to the end of the start of the upper surface of the molding apparatus base, and vertically downward;
[28]
a base lower part continuously connected to the side wall and inclined downward at the same angle as the inclination of the upper surface of the molding apparatus base;
[29]
a base side continuously connected to the lower part of the base and vertically upward from the lower part of the base;
[30]
an upper part of the base which is continuously connected to the side of the base and is inclined downward at the same angle as the inclination of the upper surface of the molding apparatus base;
[31]
a distal sidewall continuously connected to the upper portion of the base and vertically upward from the upper portion of the base;
[32]
It includes a; is continuously connected to the distal side wall, the upper surface end portion of the molding apparatus base is a plane that is inclined downward at the same angle as the inclination of the upper surface of the molding apparatus base.
[33]
The lower part of the lower frame of the molding equipment is provided with a shape corresponding to the shape of the side wall, the lower part of the base, and the shape of the base side,
[34]
The lower part of the upper frame of the molding equipment provides a pouch-type case forming apparatus having a shape corresponding to the shape of the upper part of the base and the distal side wall.
[35]
Another aspect of the present invention provides a pouch-type case forming apparatus in which the upper surface start part of the molding apparatus base and the upper surface end portion of the molding apparatus base are replaced by being horizontally arranged without being inclined downward.
[36]
The height of the base side may be equal to the sum of the height of the distal sidewall and the height of the sidewall measured in a direction parallel to the base side.
[37]
A length from the sidewall of the lower part of the base to the side of the base may be the same as a length of a branch of the distal sidewall from the side of the base of the upper part of the base.
[38]
A lower surface of the base of the molding apparatus is disposed parallel to the ground.
[39]
An intersection of the upper surface of the molding apparatus base and the side wall, an intersection of the base side and the upper part of the base, and an intersection of the distal side wall and the upper end of the molding apparatus base may have the same height.
[40]
The groove formed by the side wall, the lower part of the base, and the base side becomes a groove capable of providing a space for the lower accommodating part of the pouch-type case for accommodating the hexahedral electrode assembly therein,
[41]
The groove formed by the upper part of the base and the sidewall of the base end may be a groove capable of providing a space for the upper accommodating part of the pouch-type case for accommodating the hexahedral electrode assembly therein.
[42]
In the method of manufacturing a pouch-type case using the pouch-type case forming apparatus,
[43]
1) disposing a laminate sheet for manufacturing a pouch-type case on the upper surface of the molding apparatus base;
[44]
2) disposing the lower frame of the forming apparatus and the upper frame of the forming apparatus in grooves of corresponding shapes;
[45]
3) pressing the lower mold of the molding device and the upper mold of the molding device;
[46]
4) removing the lower frame of the forming apparatus and the upper frame of the forming apparatus and recovering the deformed laminate sheet;
[47]
It provides a method for manufacturing a pouch-type case comprising.
[48]
In addition, the present invention comprises the steps of disposing an electrode assembly in the lower receiving portion of the pouch-type case;
[49]
bending the upper accommodating part of the pouch-type case to accommodate the upper accommodating part of the pouch-shaped case to accommodate the upper part of the electrode assembly;
[50]
sealing the pouch-type case;
[51]
It provides a method for manufacturing a pouch battery comprising.
[52]
The present invention also provides a pouch battery prepared according to the method.
[53]
The battery according to the present invention is a pouch-type battery having a structure in which an electrode assembly is embedded in a laminate battery case.
[54]
In addition, the pouch-type battery according to the present invention is a pouch battery that is a lithium secondary battery.
Brief description of the drawing
[55]
1 is a view of forming a terrace step portion in a pouch of a conventional pouch-type secondary battery before cell assembly.
[56]
2 is a cross-sectional view of a conventional molding apparatus when there is no terrace step, and FIG. 3 is a perspective view of a pouch-type case manufactured using the same.
[57]
4 is a cross-sectional view of a conventional molding apparatus having two cavities for manufacturing a pouch-type case having a terrace step, and FIG. 5 is a perspective view of a pouch-type case manufactured using the same.
[58]
6 is a cross-sectional view of a molding apparatus according to the present invention having two cavities for manufacturing a pouch-type case having a terrace step, and FIG. 7 is a perspective view of a pouch-type case manufactured using the same.
[59]
8 is a cross-sectional view of another embodiment molding apparatus according to the present invention having two cavities for manufacturing a pouch-type case having a terrace step, and FIG. 9 is a perspective view of a pouch-type case manufactured using the same.
Modes for carrying out the invention
[60]
In the present application, terms such as "comprises", "have" or "comprises" are intended to designate that the features, numbers, steps, components, parts, or combinations thereof described in the specification exist, and are intended to indicate that one or more other It should be understood that this does not preclude the possibility of addition or presence of features or numbers, steps, operations, components, parts, or combinations thereof.
[61]
In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions. Throughout the specification, when it is said that a part is connected to another part, it includes not only a case in which it is directly connected, but also a case in which it is indirectly connected with another element interposed therebetween. In addition, the inclusion of any component does not exclude other components unless otherwise stated, but means that other components may be further included.
[62]
Hereinafter, a pouch-type case molding apparatus and a molding method according to the present invention will be described in detail with reference to the accompanying drawings.
[63]
6 is a cross-sectional view of a molding apparatus according to the present invention having two cavities for manufacturing a pouch-type case having a terrace step, and FIG. 7 is a perspective view of a pouch-type case manufactured using the same.
[64]
The present invention is a pouch-type case upper accommodating part for accommodating the electrode assembly 360 therein while continuously connected to the lower accommodating part 302 and the lower accommodating part 302 of the pouch-type case for accommodating the electrode assembly therein. 306) a molding device base 310 provided with a groove for manufacturing by pressing;
[65]
In the pouch-type case molding apparatus 300 comprising a; a molding apparatus lower frame 320 and a molding apparatus upper frame 340 having a shape corresponding to the groove of the molding apparatus base 310 provided at the lower portion,
[66]
The molding apparatus base 310 includes an upper surface start part 311 of the molding apparatus base having a flat surface inclined downward at a predetermined angle as one end of the molding apparatus base 310;
[67]
a side wall 313 continuously connected to the end of the upper surface start part 311 of the molding apparatus base, and vertically downward;
[68]
a base lower part 312 continuously connected to the side wall 313 and arranged to be inclined downward at the same angle as the inclination of the upper surface start part 311 of the molding apparatus base;
[69]
a base side 314 continuously connected to the base lower portion 312 and vertically upward from the base lower portion 312;
[70]
a base upper part 316 which is continuously connected to the base side part 314 and is a plane inclined downward at the same angle as the inclination of the upper surface start part 311 of the molding apparatus base;
[71]
a distal sidewall 318 continuously connected to the base upper portion 316 and vertically upward from the base upper portion 316;
[72]
It includes a; is continuously connected to the distal side wall 318, the upper surface end portion 309 of the molding apparatus base which is a plane inclined downward at the same angle as the inclination of the upper surface start portion 311 of the molding apparatus base;
[73]
The lower part of the molding equipment lower frame 320 is provided with a shape corresponding to the shape of the side wall 313, the base lower part 312, and the base side part 314,
[74]
The lower portion of the upper frame 340 of the molding equipment provides a pouch-type case molding apparatus 300 having a shape corresponding to the shape of the upper portion of the base 316 and the distal side wall 318 .
[75]
7 is a perspective view of the pouch-type case 350 manufactured using the molding apparatus 300 . The lower receiving portion 302 has a side portion 304 formed on one surface. The height of the side part 304 corresponds to the height at which the electrode assembly 360 is placed when the pouch-type case 350 is finally combined, which is the height of the side opposite to the side part 304 of the lower receiving part 302 and It is equal to the sum of the heights of the deepest parts of the upper accommodating part 306 . The pouch-type case 350 according to FIG. 7 is different from the pouch-type case 450 of FIG. 9 in that the outer peripheral portions all form a single plane.
[76]
On the other hand, in the pouch-type case 350 of FIG. 7 , the lower accommodating part 302 side 304 and the opposite side are not both vertical (see the dotted circle in FIG. 7 ). The side 304 is perpendicular to both the lower receptacle 302 and the upper receptacle 206 , but the side opposite the side 304 is not. This reflects the degree of inclination of the side wall 313 , and not all angles of the lower frame 320 of the molding apparatus are 90 degrees, and portions located at the corners of the side wall 313 have an angle of 90 degrees or more.
[77]
8 is a cross-sectional view of a molding apparatus 400 of another embodiment according to the present invention having two cavities for manufacturing a pouch-type case having a terrace step, and FIG. 9 is a perspective view of a pouch-type case manufactured using the same.
[78]
In the apparatus of FIG. 8 , when compared with the apparatus of FIG. 6 , the upper surface start portion 311a of the molding apparatus base and the upper surface end portion 309a of the molding apparatus base are disposed horizontally instead of being inclined downward. In this case, as can be seen from the cross section of the lower pouch-type battery of FIG. 8 , the point where the pouch-type case 450 at the portion where the electrode tab protrudes meets each other is inclined rather than parallel. This shape can be easily adjusted horizontally when assembling the actual battery, and the embodiment of FIG. 6 or FIG. 8 is applicable in consideration of the ease of manufacturing the pouch-type case.
[79]
Although the inclination of the upper surface starting part 311a of the molding apparatus base and the upper surface termination part 309a of the molding apparatus base may be arranged to be different from each other, this is not preferable because additional processing is required.
[80]
The height 390c of the base side 314 may be equal to the sum of the height 390b of the distal sidewall and the height 390a when the height of the sidewall is measured in a direction parallel to the base side. That is, 390c is equal to the sum of 390a and 390b.
[81]
A length from the sidewall of the base lower portion 312 to the base side portion 314 may be the same as a length from the base side portion 314 of the base upper portion 316 to the distal sidewall branch. That is, this is the position at which the electrode assembly is placed, and the lower accommodating part 302 of the pouch-type case molded by the base lower 312 and the upper accommodating part 306 of the pouch-shaped case molded by the base upper 316 are each other. It means to have the same size to combine.
[82]
A lower surface of the molding apparatus base 310 is disposed parallel to the ground.
[83]
The intersection of the upper surface of the molding apparatus base 311, 311a and the side wall 313, the intersection of the base side 314 and the base upper portion 316, the distal side wall 318 and the top end of the molding apparatus base The intersections of the portions 309 and 309a preferably have the same height.
[84]
The pouch-type case 450 of FIG. 9 is the same as the pouch-type case 350 of FIG. 7 except for the outer peripheral portions 356c and 356d. The outer peripheral portions 356c and 356d of FIG. 7 form the same plane as the outer peripheral portion 356 , but the outer peripheral portions 356c and 356d of FIG. 9 are inclined at the same angle. As can be seen from the coupling cross-sectional view of the pouch-type case 450 of FIG. 8 , they are coupled to be inclined downward.
[85]
The same height is preferable as described above in consideration of the quality and efficiency of operation after processing and processing of the laminate sheet with the metal layer inserted in the middle. The laminate sheet before processing into a pouch-type case is in a flat state. When it is placed on the molding apparatus base 310, a horizontal state is most preferable. This is in order to continuously perform a new molding operation by cutting the end of the molded product after molding the continuously supplied laminate sheet and removing it to the molding apparatus base.
[86]
In addition, a portion of the laminate sheet is stretched through the molding process and transformed into a pouch-type case. If the deformed part is the same starting point over the entire laminate sheet, the degree of deformation due to the stretched part after processing can be evenly distributed. to be.
[87]
If the base lower 312 and the base upper 316 are not inclined as in the present invention, the base lower 312, the base upper 316, like the completed form of the pouch-type case of FIG. 6 or FIG. ) will be able to design the molding apparatus base 310 so that the laminate sheet can be operated in a horizontal state.
[88]
In this case, when a horizontal laminate sheet is placed on the molding apparatus base, the height difference between the highest forming apparatus base upper surface end portions 309 and 309a and the lowest forming apparatus base upper surface starting portions 311 and 311a is too large. . In order to process the upper surface of the molding apparatus base upper surface starting portion (311, 311a) when the additional support is started in a horizontal state in the upper surface starting portion (311, 311a) of the molding apparatus base, the laminate sheet must be stretched more, this Otherwise, the laminate may become excessively thin or torn. Even if there is no damage, the thickness of the laminate sheet itself of the lower accommodating part 302 and the upper accommodating part 306 of the pouch-type case, which is the final product, is different.
[89]
If the laminate sheet is individually cut and the laminate sheet itself is placed in an inclined state instead of horizontally, continuous molding is not desired, and additional means are required to support the laminate sheet according to the inclined inclination. Thereafter, additional effort is also required to remove the pouch-type case from the molding apparatus base 310 .
[90]
On the other hand, in the molding apparatus base 310 according to the present invention, only the side wall 313 is vertically disposed, and the other base side 314 and the distal side wall 318 are perpendicular to the base lower portion 312 and the base upper portion 316. to be.
[91]
By being processed in this way, the portion in contact with the top and bottom of the pouch-type case, which is the final product, becomes inclined rather than vertical. In order to solve this problem, the sidewall 313 may also be disposed in a state perpendicular to the lower base 312 and the upper base 316 . However, in this case, the molding device lower frame 320 cannot move vertically and must be moved in an inclined direction.
[92]
In this case, when aligning the molding apparatus lower frame 320 and the molding apparatus base 310, it is necessary to design to align the position and to the inclined angle, and since the pressure is applied in the inclined direction, a force is applied to the molding apparatus lower frame 320. The press that delivers may be strained. Moreover, since it moves in the inclined direction of the lower mold 320 of the molding device, in order to avoid interference with the upper mold 340 of the molding device, the press that presses the upper mold 340 of the molding device also has a problem that the design and movement path are complicated. Occurs.
[93]
The groove formed by the side wall, the base lower part 312, and the base side part 314 can provide a space for the lower accommodating part 302 of the pouch-type case for accommodating the hexahedral electrode assembly 360 therein. becomes a home with
[94]
The groove formed by the upper part of the base 316 and the sidewall of the base end may be a groove capable of providing a space for the upper accommodating part 306 of the pouch-type case accommodating the hexahedral electrode assembly 360 therein. have.
[95]
6 and 8, the pouch-type case 350 is molded in a state in which the bottom and side surfaces are described for molding. In FIG. 6 , the pouch-type case 350 in the middle is a schematic view in which the electrode assembly 360 is disposed in the lower accommodating part 302 after it is separated from the molding device after molding and placed on a flat floor. The right side of the lower accommodating part 302 forms an angle of 90 degrees, but the left side forms an angle greater than 90 degrees. This inevitably appears in the process of molding in the molding apparatus. In the uppermost drawing of FIG. 6 , the side wall is vertically disposed in order for the molding apparatus lower frame 320 to be discharged to the outside after molding the pouch-type case 350, but the base The side 314 should be positioned at an angle greater than 90 degrees. In the upper drawing of FIG. 6 , since the lower base 312 and the upper base 316 are in an inclined state, when they are placed in a horizontal state, the left wall of the lower receiving part 302 processed by the side wall is at an angle greater than 90 degrees. It becomes a more open form. Therefore, in order to apply the molding apparatus according to the present invention, it is preferable to arrange the inclined downward angle of the upper surface of the molding apparatus base at an angle that is not too large. As a preferable range, an angle within 10 degrees downward with respect to the plane 0 degree is preferable.
[96]
In the method of manufacturing a pouch-type case using the pouch-type case forming apparatus 300,
[97]
1) disposing a laminate sheet 350 for manufacturing a pouch-type case on the upper surface of the molding apparatus base 310;
[98]
2) disposing the lower mold 320 and the upper mold 340 of the molding device in grooves of corresponding shapes;
[99]
3) pressing the molding device lower mold 320 and the molding device upper mold 340;
[100]
4) removing the lower mold 320 and the upper mold 340 of the molding device and recovering the deformed laminate sheet;
[101]
It provides a method for manufacturing a pouch-type case comprising.
[102]
In addition, the present invention comprises the steps of disposing the electrode assembly 360 in the lower receiving portion 302 of the pouch-type case;
[103]
bending the upper accommodating part 306 of the pouch-type case so that the pouch-shaped case upper accommodating part 306 receives the upper part of the electrode assembly;
[104]
sealing the pouch-type case;
[105]
It provides a method for manufacturing a pouch battery comprising.
[106]
The present invention also provides a pouch battery prepared according to the method.
[107]
The battery according to the present invention is a pouch-type battery having a structure in which an electrode assembly is embedded in a laminate battery case.
[108]
The pouch-type case according to the present invention is a pouch film (laminate sheet) including a metal barrier layer. They can be preheated to 40°C to 70°C using an infrared lamp before molding.
[109]
In addition, the pouch-type battery according to the present invention is a pouch battery that is a lithium secondary battery.
[110]
As the specific part of the present invention has been described in detail above, for those of ordinary skill in the art, these specific descriptions are only preferred embodiments, and the scope of the present invention is not limited thereby, It is obvious to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention, and it is natural that such variations and modifications fall within the scope of the appended claims.
[111]
(Explanation of symbols)
[112]
100: Conventional molding device when there is no terrace step
[113]
200: Conventional molding device when there is a terrace step
[114]
300, 400: Forming apparatus according to the present invention when there is a terrace step
[115]
106: upper cover
[116]
110, 210, 310: molding device base
[117]
120, 220, 240
[118]
150, 250, 350, 450: pouch type case
[119]
156, 256, 356: outer periphery
[120]
356a, 356c: outer periphery shear lower part
[121]
356b, 356d: outer periphery shear upper part
[122]
160, 260, 360: electrode assembly
[123]
190, 290, 390: The thickness that can accommodate the electrode assembly of the pouch-type case.
[124]
280, 380 : Terrace Step
[125]
311, 311a: starting part of the upper surface of the molding apparatus base
[126]
313: side wall
[127]
102, 202, 302: lower receiving part
[128]
304: side
[129]
206, 306: upper receiving part
[130]
309, 309a: the upper end of the molding device base
[131]
312: lower base
[132]
314: base side
[133]
316: upper base
[134]
318: end sidewall
[135]
320: forming device lower frame
[136]
340: upper frame of molding device
Industrial Applicability
[137]
In the pouch-type case having a terrace step, the present invention can provide a pouch-type case forming apparatus without dents and wrinkles in the pouch folding part, a method for manufacturing a pouch-type case using the same, and a pouch-type case manufactured by the forming apparatus have.
Claims
[Claim 1]
As one end of the molding apparatus base, the upper surface of the molding apparatus base is inclined downward at a predetermined angle, and the upper surface of the molding apparatus base is started; a side wall continuously connected to the end of the start of the upper surface of the molding apparatus base, and vertically downward; a base lower part continuously connected to the side wall and inclined downward at the same angle as the inclination of the upper surface of the molding apparatus base; a base side continuously connected to the lower part of the base and vertically upward from the lower part of the base; an upper part of the base which is continuously connected to the side of the base and is inclined downward at the same angle as the inclination of the upper surface of the molding apparatus base; a distal sidewall continuously connected to the upper portion of the base and vertically upward from the upper portion of the base; The lower accommodating pouch-type case for accommodating the electrode assembly therein, which is continuously connected to the distal side wall and is a flat surface terminating portion of the molding apparatus base, which is a plane inclined downward at the same angle as the inclination of the upper surface of the molding apparatus base. a molding apparatus base provided with a groove for manufacturing the pouch-type case upper accommodating part continuously connected to the part and the lower accommodating part while accommodating the electrode assembly therein; A pouch-type case forming apparatus comprising a; the lower frame of the forming equipment and the upper frame of the forming apparatus.
[Claim 2]
According to claim 1, wherein the molding equipment lower frame has a shape corresponding to the shape of the side wall, the base lower portion, and the base side portion is provided at the lower portion, and the molding equipment upper frame has a shape corresponding to the shape of the upper portion of the base and the distal side wall. A pouch-type case forming device with a corresponding shape provided at the bottom.
[Claim 3]
The pouch-type case molding apparatus according to claim 1, wherein the starting part of the upper surface of the molding apparatus base and the upper end of the molding apparatus base are not arranged in a downward slope but are disposed horizontally.
[Claim 4]
The pouch-type case forming apparatus according to claim 1, wherein the height of the base side is equal to the sum of the height of the distal side wall and the height of the side wall measured in a direction parallel to the base side.
[Claim 5]
The apparatus of claim 1, wherein a length from the side wall of the lower part of the base to the side of the base is the same as a length of a branch of the distal side wall from the side of the base of the upper part of the base.
[Claim 6]
According to claim 1, wherein the lower surface of the molding apparatus base is arranged parallel to the ground pouch-type case molding apparatus.
[Claim 7]
The pouch-type case according to claim 1, wherein the intersection of the upper surface of the molding apparatus base and the side wall, the intersection of the base side and the upper part of the base, and the intersection of the distal side wall and the upper end of the molding apparatus base have the same height. molding device.
[Claim 8]
According to claim 1, wherein the groove formed by the side wall, the base lower portion, and the base side portion is a groove capable of providing a space for the lower accommodating portion of the pouch-type case accommodating the hexahedral electrode assembly therein, the The groove formed by the upper part of the base and the sidewall of the base end becomes a groove capable of providing a space for the upper accommodating part of the pouch-type case accommodating the hexahedral electrode assembly therein.
[Claim 9]
In the method of manufacturing a pouch-type case using the pouch-type case molding apparatus according to any one of claims 1 to 8, 1) a laminate sheet for manufacturing the pouch-type case is placed on the upper surface of the molding apparatus base. placing; 2) disposing the lower frame of the forming apparatus and the upper frame of the forming apparatus in grooves of corresponding shapes; 3) pressing the lower mold of the molding device and the upper mold of the molding device; 4) removing the lower mold of the molding device and the upper mold of the molding device, and recovering the deformed laminate sheet; a method of manufacturing a pouch-type case comprising a.
[Claim 10]
arranging the electrode assembly in the lower receiving portion of the pouch-type case manufactured by the manufacturing method according to claim 9; accommodating an upper portion of the electrode assembly by bending the upper accommodating part of the pouch-type case; A method of manufacturing a pouch battery comprising a; sealing the pouch-type case.
[Claim 11]
A pouch battery manufactured according to the method of claim 10 .
[Claim 12]
The pouch battery according to claim 11, wherein the pouch battery is a lithium secondary battery.