KR20200000966A - Large capacity Battery pouch film forming cutting device and foaming cutting method - Google Patents

Abstract

The present invention relates to a large-capacity battery pouch film forming device and a forming method, which are capable of differently forming a forming depth in the case that an upper forming area is different from a lower one when forming a battery and, at the same time, simply molding a folding line. To be more specifically, the forming device comprises: a lower mold having a film composed of an aluminium laminate sheet placed thereon, and a first lower forming mold and a second lower forming mold; an upper mold fixing the film placed on the lower mold and, at the same time, forming and molding a pouch as a first upper forming mold and a second upper forming mold descend and pressurize the first and second lower forming molds together with the film; and a line mold descending between the first and second upper forming molds of the upper mold, and pressurizing the film positioned between the first and second lower forming molds in order to form a folding line. Therefore, the large-capacity battery pouch film forming device and the forming method can simplify the manufacturing process thereof and shorten the molding time by forming and molding a pouch film for packing a large-capacity battery in a battery shape with different areas and, at the same time, forming a folding line.

Description

Large capacity Battery pouch film forming cutting device and foaming cutting method}

The present invention relates to a large-capacity battery forming, and more particularly, to a different forming depth of the forming depth when the battery insertion area is asymmetrical for forming, which is applied to a forming apparatus of a company producing foaming paper of a battery used in a hybrid or an electric vehicle. A high capacity battery pouch film forming apparatus and forming method are possible.

Recently, due to the depletion of fossil energy and environmental pollution, there is a growing interest in electrical products that can be driven using electrical energy without using fossil energy. As a result, the demand for secondary batteries as a source of energy is rapidly increasing as technology development and demand for electric products increase.

Therefore, many researches on secondary batteries have been conducted to meet various demands.

Such secondary batteries are classified into pouch type, cylindrical type, square type, etc. according to the type of exterior material, among which the pouch type secondary batteries are secondary batteries in which an electrode assembly is embedded in a pouch case of a metal laminate sheet. Pouch-type secondary batteries have advantages such as easy manufacturing, low manufacturing cost, and easy configuration of large capacity battery packs by connecting a plurality of unit cells in series and / or in parallel.

Typically, secondary batteries are rechargeable and have a large capacity, and include nickel cadmium, nickel hydrogen, and lithium ion batteries. Among these, the lithium ion battery has attracted attention as a next generation power source due to its excellent characteristics such as long life and high capacity. Among them, lithium secondary battery is used as a power source for portable electronic devices with an operating voltage of 3.6V or higher, or used in high-power hybrid vehicles by connecting several in series, such as nickel-cadmium batteries or nickel-metal hydride batteries. Compared with the three times higher operating voltage and excellent energy density per unit weight, the use is increasing rapidly.

The lithium secondary battery may be manufactured in various forms, and typical examples thereof include a cylindrical type and a prismatic type mainly used in lithium ion batteries. Lithium polymer batteries, which are in the spotlight in recent years, have been manufactured in a flexible pouched type, and their shape is relatively free. In addition, lithium polymer batteries are excellent in safety and light in weight, which is advantageous for slimmer and lighter portable electronic devices.

Generally, a diagram illustrating a structure of a secondary battery pouch cell includes a battery part and a case providing a space in which the battery part is accommodated.

The battery unit may be disposed in the order of a positive electrode plate, a separator, and a negative electrode plate, and may be wound in one direction, or may have a plurality of positive electrode plates, separators, and negative electrode plates stacked thereon. Each electrode plate of the battery unit is electrically connected to the positive electrode and the negative electrode tab.

One ends of the positive and negative electrode tabs protrude outwards through the sealing surface of the case. One end of the protruding positive and negative electrode tabs is connected to a terminal of a protective circuit board (not shown).

The case is a pouch type case in which an intermediate layer is a metal foil and an inner and outer skin layers adhered to both sides of the metal foil are made of an insulating film, unlike a cylindrical or rectangular can structure formed of a metal material of a thick film. Pouch type case is excellent in formability and can be bent freely. As described above, a space in which the battery unit is accommodated is formed in the case, and a sealing surface is provided on the surface to be thermally fused along the edge of the space.

The pouch cell may be manufactured by using a forming mold on one side of the packaging material to form a shape in which the battery part is inserted, and folding the other side of the unformed packaging material in half, and Single Forming method for sealing the sealing surface formed around the three remaining sides except for the bent portion of the four sides of the case by inserting the battery unit, and the battery unit is inserted into the sides of the packaging material using a forming mold (Forming mold) To form a shape to be seated, it can be divided into a double forming method of folding the center between the two formed seating portion, inserting the battery portion therebetween and sealing the sealing surface formed around the four sides of the case.

In this case, due to the difference in height between the forming part and the sealing surface on which the battery part is seated, a step occurs on both sides of the lower case of the battery part, and the end portion where the forming part and the sealing surface meet is vulnerable to cracking due to folding or bending. It becomes a site. When the crack occurs on the case, when the airtightness of the pouch cell is released and the outside air penetrates into the pouch cell, the pouch cell is inflated or degraded due to deterioration.

The possibility of the cracks is present not only during the manufacturing process of the pouch cell but also during the packaging operation or the process of constructing the pouch cell into a pack, and the damage of the pouch cell may occur minutely, so it is not easy to detect the crack. If the battery pack is configured instead of the battery pack, the battery pack may have a fatal effect on the performance of the battery pack.

Therefore, in manufacturing a pouch cell by a single forming cutting method, a technique for manufacturing a pouch cell that can reduce crack generation is required.

The battery forming molding according to the prior art has a limitation in forming the same forming area of the battery, there is an inconvenience that must go through the forming process.

Accordingly, there is an urgent need for an improved forming apparatus capable of forming a folding line stably and forming a folding line stably with a different forming size of a large capacity battery.

Publication No. 10-2013-0010572 (Single forming secondary battery pouch cell and manufacturing method thereof) Publication No. 10-2007-0038113 (Battery Pack) Publication No. 10-2015-0046533 (Pouch type secondary battery and battery pack comprising same) Publication No. 10-2012-0020058 (apparatus for forming a lithium ion battery) Publication No. 10-2004-0079531 (Vacuum Suction Positioning Forming Mold for Aluminum Pouches) Registration No. 10-1623106 (Pouch Film Forming Device)

The present invention has been made to solve the above problems, and provides a large-capacity battery pouch film forming apparatus and a forming method for forming a folding line at the same time forming a pouch film to a different area in a battery form to wrap a large-capacity battery. Its purpose is to.

In addition, another object of the present invention is to allow the fixing and forming molding process of the film to proceed with a simple operation of the fixing and forming mold.

In addition, another object of the present invention is to simply form a line for folding the pouch case using a line mold.

In addition, another object of the present invention is to increase the fixing force of the film when forming the film by spraying compressed air through the injection hole of the lower mold.

A large capacity battery pouch film forming apparatus and a forming method according to an embodiment of the present invention, in the apparatus for forming a large capacity battery aluminum pouch for use in various fields, the first and second lower portions formed with different movement distances in the center along the longitudinal direction Forming a forming mold, and fixing and pouching a film formed of a lower mold having a line groove formed between the first and second lower forming molds and an aluminum laminate sheet placed on an upper portion of the lower mold. A line is formed in the center along the longitudinal direction to form first and second upper forming molds having different movement distances in the center to correspond to the lower forming molds, and are moved up and down between the first and second upper forming molds and inserted into the line grooves. The upper mold with a mold formed thereon, and the fixing of the film placed on the lower mold by the lowering operation of the upper mold, and the first and second lower forming molds and the first and second upper portions. Large-capacity battery pouch film forming apparatus, characterized in that configured to form a folding line by inserting the film into the line groove while the molding is completed by forming a different forming area by different moving distance of the dimming mold To provide.

In addition, the lower mold is formed in the lower base mold to maintain a fixed state, the lower forming the upper groove formed between the lower base mold and the first and second lower forming mold is installed in the spaced apart state in the center The frame, the first lower forming mold and the second lower forming mold provides a large capacity battery pouch film forming apparatus, characterized in that the movement distance is configured differently from each other separately from the lower forming mold.

In addition, the outer portion of the lower forming mold to prevent the film from crushing and unfolding at the same time when providing the vacuum forming and forming the case is completed to form a uniform shape on all four corners when forming by the upper mold Provided is a large capacity battery pouch film forming apparatus, characterized in that for forming a suction injection hole for separating the film from the adsorption by spraying compressed air to facilitate the discharge.

In addition, the upper mold is installed in the upper base mold to move up and down, the lower base of the upper base mold and the first and second upper forming mold is installed in the state spaced apart in the center, between the first and second upper forming mold The upper forming mold, the first and second upper forming mold and the line mold are raised and lowered separately from the upper forming mold, and the first upper forming mold and the second upper forming mold are lower than each other. It provides a large-capacity battery pouch film forming apparatus, characterized in that the movement distance is configured differently in the direction.

In addition, the corner portion of the upper forming mold provides a battery pouch film forming apparatus, characterized in that the four ends of the film is in close contact with the lower mold and configure the injection hole for spraying compressed air so that the variation of the installation position does not occur. .

The first lower forming mold is positioned above the first upper forming mold on which the film is placed, and is pressed downward to form a first forming space, and the second lower forming mold has a second upper portion on which the film is placed. Battery pouch film forming, characterized in that configured to be positioned above the forming mold and pressurized downward to form a second forming space, the forming depth of the first forming space is larger than the forming depth of the second forming space. Provide the device.

On the other hand, in a forming method using a device for forming a large capacity battery used in various fields in an aluminum pouch, a position setting step of raising the upper mold spaced apart from the lower mold, the first and second lower forming of the lower mold after setting the position Film installation step of the film of the aluminum laminate sheet to the upper part of the mold, the upper mold 20 by lowering the film fixing step of pressing and fixing the edge of the film between the upper and lower forming mold, when the film is fixed Forming step of forming the first and second lower forming molds while the first and second lower forming molds move downward from the lower forming mold by pressing the film placed on the first and second lower forming molds by lowering the upper and lower forming molds respectively through the upper forming mold. The line mold moves downward through the upper forming mold while the upper mold for forming the film is maintained. The steel forming step is a line forming step of forming a folding line while pressing the film located in the first and second lower forming molds while inserting the line grooves while the line dies are descending. It provides a forming method using a large-capacity battery pouch film forming apparatus, characterized in that the first and second upper forming molds and line molds and the first and second lower forming molds independently rise to form a return step.

The first and second upper forming molds are set to protrude by moving downward from the upper forming, but the first upper forming mold is set to protrude more than the second upper forming mold, and the first and second lower forming molds are lower. It provides a forming method using a large-capacity battery pouch film forming apparatus, characterized in that configured to be inserted to move to the bottom from the forming.

According to an embodiment of the present invention, the pouch film to pack a large capacity battery in the form of a battery to form a folding line at the same time with a different area has the effect of simplifying the process and increase the molding time.

The present invention has the effect of excellent molding quality by allowing the fixing and forming molding process of the film to proceed with a simple operation of the fixing and forming mold.

The present invention has the effect of simply forming a line for folding the pouch case using a line mold.

The present invention has the effect of increasing the fixing force of the film when molding the film by spraying compressed air through the injection hole of the lower mold.

1 is an exploded perspective view of a battery pouch film forming apparatus according to the present invention,
Figure 2 is a bottom mold plan view of a battery pouch film forming apparatus according to the present invention,
3 is a bottom view of the upper mold of the battery pouch film forming apparatus according to the present invention,
4 is a cross-sectional view of a battery pouch film forming apparatus according to the present invention,
5 and 7 are cross-sectional views showing the position setting and film installation in the process of the forming method using the battery pouch film forming apparatus according to the present invention,
8 is an enlarged cross-sectional view of a portion A of FIG. 7 illustrating a folding line forming process by a line mold;
9 and 10 are cross-sectional views showing the mold return step and the case pouch separation of the process of the forming method using the battery pouch film forming apparatus according to the present invention;
11 is a flowchart of a forming method using a battery pouch film forming apparatus according to the present invention,
12 is a perspective view of a pouch case manufactured by a forming method using a battery pouch film forming apparatus according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Like parts are designated by like reference numerals throughout the specification.

1 to 4, the configuration of the present invention will be described with reference to the accompanying drawings, and relates to a device for forming a battery used in various fields with an aluminum pouch, the film (1) made of an aluminum laminate sheet The lower mold 10 having the first and second lower forming molds 11 and 12 formed thereon, and the first and second upper forming molds 21 fixing the film 1 mounted on the lower mold 10. 22 of the upper mold 20 to form a pouch (Forming) while pressing the first and second lower forming molds (11, 12) together with the film (1), the upper mold (10) A line mold is formed between the first and second upper forming molds 21 and 22 to press down the film 1 positioned between the first and second lower forming molds 11 and 12 to form a folding line. 23) to form a forming apparatus (100).

The film 1 is an aluminum laminate sheet and has a structure in which insulating layers 1b made of a polymer material are bonded to both surfaces of the metal layer 1a. The insulating layer 1b has a thickness of approximately 30 to 40 micrometers (um) and may be coated or laminated to the metal layer 1a. The upper part of the insulating layer 1b is a polymer film layer capable of heat fusion, and the lower part is formed of a polymer film layer functioning as an outer protective layer.

 The material of the metal layer 1a may be any one selected from an alloy of iron, carbon, chromium and manganese, an alloy of iron, chromium and nickel, aluminum, or an equivalent thereof, and an aluminum metal foil is widely used.

The battery (secondary battery) is classified into a pouch type, a cylindrical shape, a square shape, and the like according to the type of exterior material, among which the pouch type secondary battery is a secondary battery in which an electrode assembly is embedded in a pouch case of a metal laminate sheet. Pouch-type secondary batteries are easy to manufacture, low manufacturing cost, and constitute a large capacity battery pack by connecting a plurality of unit cells in series and / or parallel.

In this case, the lower mold 10 forms first and second lower forming molds 11 and 12 having different movement distances from each other in the center along the longitudinal direction, and the first and second lower forming molds 11 and 12 ( The line groove 13 is formed between 12.

In more detail, the lower mold 10 forms a lower base mold 14 to maintain a fixed state.

The lower forming mold 15 is installed on the lower base mold 14 and forms a line groove 13 between the first and second lower forming molds 11 and 12 in a state spaced apart from the center. To form.

That is, the lower forming mold 15 is formed in a state in which the first and second lower mold holes 15a and 15b are installed so that the first and second lower forming molds 11 and 12 move up and down. A line groove 13 is formed between the first and second lower mold holes 15a and 15b.

The first lower forming mold 11 and the second lower forming mold 12 separately form the moving distance in the lower direction separately from the lower forming mold 15.

In this case, the first and second lower forming molds 11 and 12 are installed on the upper surface of the lower base mold 14 so as to be lifted up and down by receiving a working force from a separate hydraulic device or a pneumatic device, and the lower forming mold 15 The first and second lower forming molds 11 and 12 are inserted into the first and second lower mold holes 15a and 15b.

In addition, the outer portion of the lower forming mold (15) induces crushing and unfolding of the film (1) and at the same time the shape of the vacuum force to maintain a uniform shape in the four corners of the mold when forming by the upper mold (20) Compressed air is sprayed to facilitate the discharge of the case in which the provision and forming molding are completed, thereby forming a suction injection hole 16 which separates the film 1 from adsorption.

That is, in order to suck air and inject air through the suction injection hole 16 and the lower mold 10, an air suction device such as a separate vacuum device and a compressed air supply device are connected.

On the other hand, fixing the film (1) made of an aluminum laminate sheet to the upper portion of the lower mold 10 and to form a pouch and along the longitudinal direction to correspond to the first and second lower forming mold (11, 12) The first and second upper forming molds 21 and 22 having different moving distances from each other are formed in the center, and the first and second upper forming molds 21 and 22 are raised and lowered, and the line grooves 13 are moved up and down. An upper mold 20 having a line mold 23 inserted into the upper mold 20 is formed.

In more detail, the upper mold 20 forms an upper base mold 24 which is operated to move up and down.

The first and second upper forming molds 21 and 22 are installed to be spaced apart from the lower portion of the upper base mold 24 and are spaced at the center thereof. An upper forming mold 25 having a plate-shaped line mold 23 is formed therebetween.

At the corners of the upper forming mold 25, four ends of the film 1 are in close contact with the lower mold 10, and a spray hole 25d for injecting compressed air is formed to prevent variation of the installation position.

That is, the upper forming mold 25 is formed in a state in which the first and second upper mold holes 25a and 25b are installed so that the first and second upper forming molds 21 and 22 move up and down. The line mold hole 25c is installed between the first and second upper mold holes 25a and 25b to allow the line mold 23 to move up and down.

The first and second upper forming molds 21 and 22 and the line mold 23 are raised and lowered separately from the upper forming mold 25, and the first and second upper forming molds 21 and 22 are formed. The mold 22 is configured to move differently in the downward direction.

At this time, the first and second upper forming molds 21 and 22 are installed on the lower surface of the upper base mold 24 so as to move up and down by receiving a working force from a separate hydraulic device or a pneumatic device, and the upper forming mold 25 The first and second upper forming molds 21 and 22 are respectively inserted into the first and second upper mold holes 25a and 25b of the upper and lower mold holes 25a and 25b, respectively, and the line mold 23 is inserted into the line mold holes 25c. do.

In addition, the first lower forming mold 11 is positioned above the first upper forming mold 21 on which the film 1 is placed, and moves downward to form a first forming space 3.

The second lower forming mold 12 is positioned above the second upper forming mold 22 on which the film 1 is placed, and is pressed downward to form a second forming space 4.

The forming depth of the first forming space 3 is greater than the forming depth of the second forming space 4.

In addition, the lower base mold 14, the upper base mold 24 and the first and second upper forming molds 21 and 22, and the first and second lower forming molds 11 and 12, and the line mold 23. It is connected to a pneumatic cylinder (not shown in the drawings), the pneumatic cylinder is connected to a compressed air supply device such as a separate compressor device is configured to operate independently up and down.

Looking at the state of use of the large-capacity battery pouch film forming apparatus and the forming method configured as described above are as follows.

4 to 12, the lower base mold 14, the upper base mold 24, and the first and second upper forming molds 21 and 22 and the first and second lower forming molds 11. 12, the line mold 23 and the suction injection hole 16 is connected to the air suction device and the compressed air supply device for the lifting and lowering operation to complete the installation of the forming device 100.

Position setting step (S1) to raise the upper mold 20 to be spaced apart from the lower mold (10).

That is, in the position setting step (S1), the first and second upper forming molds 21 and 22 are set to protrude by moving downward from the upper forming mold 25, and the first upper forming mold 21 is formed. It is set to protrude more than the second upper forming mold (22).

In addition, the first and second lower forming molds 11 and 12 are configured to be set to move downward from the lower forming mold 15.

Then, after setting the position through the position setting step (S1) to prevent the film (1) made of an aluminum laminate sheet to the upper portion of the first and second lower forming mold (11) (12) of the lower mold (10). Perform the film installation step (S2) to expand.

Next, after passing through the film installation step (S2) by lowering the upper mold 20, the film fixing step of pressing and fixing the edge portion of the film 1 between the upper, lower forming molds 25, 15 ( S3).

At this time, the air is sucked through the suction spray hole 16 of the lower forming mold 15 to induce crushing and unfolding of the film 1, and at the same time, the mold is formed on all four edges of the mold by the upper mold 20. There is a feature of providing a vacuum force to keep the shape uniform.

In addition, by spraying compressed air through the injection hole (25d) of the upper forming mold 25, the four ends of the film (1) is in close contact with the lower mold 10, there is a feature that does not occur in the installation position fluctuations.

Next, when the film 1 is fixed through the film fixing step S3, the first and second upper forming molds 21 and 22 are lowered through the upper forming mold 25, respectively. Forming molding step (S4) of pressing the film (1) placed on the forming mold (11) 12 to form the first and second lower forming mold (11) (12) while moving downward from the lower forming mold (15) ).

At this time, the first and second upper forming molds 21 and 22 may be lowered separately, but in the present invention, the first and second upper forming molds 21 and 22 may simultaneously operate to lower and lower the film 1. The forming operation is performed, and in the present invention, the first upper forming mold 21 is lowered more than the second upper forming mold 22 to form the film 1.

Subsequently, the line mold lowering step S5 in which the line mold 23 moves downward through the upper forming mold 25 while the operation of the upper mold 10 for forming the film 1 is maintained. Go through.

Next, while pressing the film 1 located in the first and second lower forming molds 11 and 12 while the line mold 23 descends, the folding line 5 is formed while being inserted into the line groove 13. The line forming step (S6) is passed.

Finally, when the molding of the line groove 13 is completed, the upper mold 10 ascends as a whole and the first and second upper forming molds 21 and 22 and the line mold 23 and the first and second lower forming molds. (11) (12) is raised alone and goes through the return step S7.

That is, the film 1 is formed in the first and second upper forming molds 21 and 22 to form first and second forming spaces 3 and 4 in which forming spaces are different from each other. The forming of the pouch case 2 in which the folding line 5 is formed between the first and second forming spaces 3 and 4 by molding is completed.

In this way, after the return step (S7) to inject air through the suction injection hole 16 of the lower forming mold (15) to separate the pouch case (2) to the lower forming mold (15) of the lower mold (10) There is a feature to facilitate the collection.

The pouch case 2 has a large area of the first forming space 3 and a small area of the second forming space 4 so that the first forming space 3 functions as a body when the battery is formed. The second forming space 4 performs a cover function, but has a feature of making the pouch case 2 fold in an unbalanced state or an unbalanced state through the folding line 5 so as to be easily folded.

In the above description with reference to the accompanying drawings, the present invention has been described based on a specific shape and direction in the description of the present invention a large capacity battery pouch film forming apparatus and forming method, various modifications and changes by those skilled in the art, such modifications and changes Should be construed as being included in the scope of the invention.

1: Film 1a: Metal Layer
1b: insulation layer 2: pouch case
3: first forming space 4: second forming space
5: folding line 10: lower mold
11: first lower forming mold 12: second lower forming mold
13: line groove 14: lower base mold
15: lower forming mold 15a: first lower mold hole
15b: second lower mold hole 16: suction injection hole
20: upper mold 21: the first upper forming mold
22: second upper forming mold 23: line mold
24: upper base mold 25: upper forming mold
25a: first upper mold hole 25b: second upper mold hole
25c: line mold hole 25d: injection hole
S1: position setting step S2: film installation step
S3: Film fixing step S4: Forming molding step
S5: line mold dropping step S6: line forming step
S7: return step 100: forming apparatus

Claims (8)

In the apparatus for forming a large capacity battery aluminum pouch used in various fields,
The first and second lower forming molds 11 and 12 are formed at different centers along the longitudinal direction, and line grooves 13 are formed between the first and second lower forming molds 11 and 12. Bottom mold (10),
The film 1 made of an aluminum laminate sheet mounted on the upper portion of the lower mold 10 is fixed and formed in a pouch, and is formed at the center along the length direction so as to correspond to the first and second lower forming molds 11 and 12. The first and second upper forming molds 21 and 22 are formed to have different moving distances from each other, and are moved up and down between the first and second upper forming molds 21 and 22 and inserted into the line grooves 13. The upper mold 20 to form a line mold 23,
Fixing of the film 1 mounted on the lower mold 10 by the lowering operation of the upper mold 20 and the first and second lower forming molds 11 and 12 and the first and second upper forming molds 21 ( When the molding is completed with different forming areas by different moving distances of 22), the line mold 23 moves downward to insert the film 1 into the line groove 13 to form a folding line. A large capacity battery pouch film forming device.
According to claim 1, wherein the lower mold 10, the lower base mold 14 to maintain a fixed state,
The lower forming mold 15 is installed on the lower base mold 14 and forms a line groove 13 between the first and second lower forming molds 11 and 12 in a state spaced apart from the center. ,
The first lower forming mold (11) and the second lower forming mold (12) is a high-capacity battery pouch film forming apparatus, characterized in that different movement distances in the lower direction separately from the lower forming mold (15).
The method according to claim 1, wherein the outer portion of the lower forming mold (15) induces crushing and unfolding of the film (1) and at the same time maintains the shape of the mold uniformly on all four edges when forming by the upper mold (20). A large-capacity battery pouch film forming apparatus, comprising: a suction injection hole (16) which separates the film (1) by adsorbing compressed air so as to easily discharge the case in which the vacuum forming and the forming molding are completed.
According to claim 1, wherein the upper mold 20 is the upper base mold 24, the lifting operation
The first and second upper forming molds 21 and 22 are installed to be spaced apart from the lower portion of the upper base mold 24 and spaced at the center thereof, and the first and second upper forming molds 21 and 22 of the upper base mold 24 are installed. An upper forming mold 25 having a plate-shaped line mold 23 formed therebetween,
The first and second upper forming molds 21 and 22 and the line mold 23 are raised and lowered separately from the upper forming mold 25, and the first upper forming mold 21 and the second upper forming mold ( 22) is a large capacity battery pouch film forming apparatus, characterized in that the movement distance is configured differently from each other downward.
The injection hole (25d) according to claim 4, wherein the four corners of the film (1) are in close contact with the lower mold (10) at the corners of the upper forming mold (25), and the compressed air is sprayed to inject compressed air so that the installation position does not change. Battery pouch film forming apparatus characterized in that the configuration.
The method of claim 1, wherein the first lower forming mold 11 is positioned above the first upper forming mold 21 on which the film 1 is placed, and is pressed downward to form the first forming space 3. and,
The second lower forming mold 12 is positioned above the second upper forming mold 22 on which the film 1 is placed and moved downward to form a second forming space 4.
The battery pouch film forming apparatus, characterized in that the forming depth of the first forming space (3) is configured to be larger than the forming depth of the second forming space (4).
In the forming method using a device for forming a large capacity battery used in various fields with an aluminum pouch,
Position setting step (S1) for raising the upper mold 20 to be spaced apart from the lower mold 10,
After setting the position, the film installation step (S2) of the film (1) consisting of an aluminum laminate sheet on top of the first and second lower forming molds (11, 12) of the lower mold (10),
Lowering the upper mold 20 film fixing step (S3) for pressing and fixing the edge portion of the film (1) between the upper, lower forming mold (25, 15),
When the film 1 is fixed, the first and second upper forming molds 21 and 22 are respectively lowered through the upper forming mold 25 to be placed on the first and second lower forming molds 11 and 12. Forming step (S4) of pressing (1) and forming the first and second lower forming molds (11, 12) while moving downward from the lower forming mold (15),
In the state in which the operation of the upper mold 10 for forming the film 1 is maintained, the line mold 23 moves downward through the upper mold 25 through the upper mold 25 (S5),
The line forming step of forming the folded line 5 while pressing the film 1 positioned in the first and second lower forming molds 11 and 12 while inserting the line mold 23 into the line groove 13 while descending the line mold 23. (S6),
When the molding of the line groove 13 is completed, the upper mold 10 ascends as a whole, and the first and second upper forming molds 21 and 22 and the line mold 23 and the first and second lower forming molds 11 are formed. Forming method using a large-capacity battery pouch film forming apparatus, characterized in that (12) is raised alone to form a return step (S7) to the original position. The method of claim 7, wherein the first and second upper forming molds 21 and 22 are set to protrude by moving downward from the upper forming mold 25, wherein the first upper forming mold 21 is formed in the second upper part. Set to protrude more than the forming mold (22),
Forming method using a large-capacity battery pouch film forming apparatus, characterized in that the first and second lower forming mold (11) (12) is configured to be set so as to move downward from the lower forming mold (15).

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