KR20230148581A - Battery cell manufacturing device - Google Patents

Abstract

The present invention relates to a battery cell manufacturing device, including a first sealing device and a second sealing device, wherein the first sealing device and the second sealing device include: a sealing block contacting an area of a battery cell pouch; a heater located in contact with one surface of the sealing block and transferring heat to the sealing block; a temperature sensor provided in one area of the sealing block; and an insulating material positioned in contact with one surface of at least one of the sealing block and the heater.

Description

Battery cell manufacturing device {BATTERY CELL MANUFACTURING DEVICE}

The present invention relates to a battery cell manufacturing device, and more specifically, to a battery cell manufacturing device that can secure battery cell sealing quality while shortening the pouch sealing time.

As technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source is rapidly increasing. Accordingly, much research is being conducted on secondary batteries that can meet various needs.

Secondary batteries are attracting much attention as an energy source not only for mobile devices such as mobile phones, digital cameras, and laptops, but also for power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles.

Depending on the shape of the battery case, these secondary batteries are classified into cylindrical batteries and square batteries in which the electrode assembly is built in a cylindrical or square metal can, and pouch-type batteries in which the electrode assembly is built in a pouch-shaped case of aluminum laminate sheet. do. Here, the electrode assembly built into the battery case is a power generating element capable of charging and discharging consisting of a positive electrode, a negative electrode, and a separator structure interposed between the positive electrode and the negative electrode, and a separator is formed between the positive electrode and the negative electrode in the form of a long sheet coated with an active material. It is classified into a jelly-roll type in which a plurality of anodes and cathodes are interposed and wound, and a stack type in which multiple anodes and cathodes are sequentially stacked with a separator interposed between them.

Among these, in particular, pouch-type batteries, which have a stacked or stacked/folded electrode assembly built into a pouch-type battery case of aluminum laminated sheets, are increasingly being used due to their low manufacturing cost, small weight, and easily deformed form. It is increasing.

Figure 1 is a diagram showing a conventional battery cell manufacturing apparatus.

Referring to FIG. 1, the battery cell manufacturing apparatus 1 includes a sealing block 4, a sealing tool 5 in contact with one surface of the sealing block 4, a cartridge heater 6 inserted into the sealing tool 5, and a temperature It consists of a sealing device including a sensor (7) and a support portion (8) that supports the sealing tool (5).

There are two sealing devices in total, and may include a first sealing device (2) and a second sealing device (3) facing each other. The second sealing device 3 can move in the vertical direction (z-axis direction or -z-axis direction). As the second sealing device 3 moves, the sealing block 4 of the first sealing device 2 and the sealing block 4 of the second sealing device 3 come into contact with each other, and the sealing blocks 4 are placed between the sealing blocks 4. Battery cells can be sealed.

Specifically, the sealing block 4 can receive heat from the cartridge heater 6 and heat-seal the battery cell pouch. The cartridge heater 6 can be inserted into the cartridge heater insertion hole provided in the sealing tool 5 to generate heat. The heat generated from the cartridge heater 6 may be transferred to the sealing tool 5, and the heat transferred to the sealing tool 5 may be transferred to the sealing block 4.

When sealing a battery cell pouch using a conventional battery cell manufacturing device, heat is transferred indirectly and step-by-step from the cartridge heater, so the sealing block 4 has a certain temperature until it reaches a temperature sufficient to heat the battery cell. It took time. In addition, if the temperature of the sealing block 4 decreases after sealing, it must be heated again to a temperature above which sealing is possible, and at this time, more than a certain amount of time is required, which reduces the efficiency of the manufacturing process, and there is a need to solve this problem.

The problem to be solved by the present invention is to provide a battery cell manufacturing device that improves process speed by reducing sealing time and at the same time secures sealing quality.

However, the problems to be solved by the embodiments of the present invention are not limited to the above-mentioned problems and can be expanded in various ways within the scope of the technical idea included in the present invention.

The battery cell manufacturing device according to an embodiment of the present invention includes a first sealing device and a second sealing device, wherein the first sealing device and the second sealing device perform sealing that contacts a region of the battery cell pouch. block; a heater located in contact with one surface of the sealing block and transferring heat to the sealing block; a temperature sensor provided in one area of the sealing block; and an insulating material positioned in contact with one surface of at least one of the sealing block and the heater.

The heater may be provided by being fastened to the sealing block.

The heater may include a fastening groove into which a fastening member fastened to the sealing block is inserted.

The heater may be made of a metal material and be capable of generating heat electrically.

The heater may be made of a material with rapid thermal response and heat recovery.

The insulating member includes a first insulating member provided in contact with one side of the sealing block, a second insulating member provided in contact with one side of the sealing block and one side of the heater, and a second insulating member provided in contact with one side of the heater. It includes a third insulation member, and the first insulation member, the second insulation member, and the third insulation member may each be assembled.

One surface of the first insulating member in contact with the sealing block and one surface of the second insulating member are assembled by being fastened in contact with each other, and one surface of the second insulating member in contact with the lower surface of the sealing block and the heater and the third insulating member. One surface of the member may be fastened while being in contact with the member to be assembled.

The sealing block according to another embodiment of the present invention includes a first surface on which the battery cell is located, and a second surface provided only in the sealing block of one of the first sealing device or the second sealing device. And, the second side may have a grooved area of the first side.

The size of the second surface may correspond to the size of the battery cell.

The height of the second surface may correspond to the height of the battery cell.

The sealing block according to another embodiment of the present invention includes a first surface on which the battery cell is located, and a second surface provided on the sealing block of the first sealing device and the second sealing device, The second surface may be a portion of the first surface.

The height of the second surface of the first sealing device may be lower than the height of the battery cell, and the height of the second surface of the second sealing device may be lower than the height of the battery cell.

The sum of the height of the second surface of the first sealing device and the height of the second surface of the second sealing device may correspond to the height of the battery cell.

The temperature sensor according to an embodiment of the present invention may be provided at a position closest to one surface of the sealing block where the battery cell is located.

The temperature sensor is provided by being inserted into a first groove located on one surface of the sealing block, and the first groove may correspond to the shape of the temperature sensor or may be larger than the size of the temperature sensor.

According to embodiments, by providing a heater that can directly heat the sealing block and has fast thermal conductivity and thermal response, it is possible to improve manufacturing process efficiency, shorten sealing time, and provide battery cells of a certain quality or higher. there is.

In addition, since the sealing block and heater are detachable and the insulation material can be assembled, there is no need to manufacture additional equipment, thereby reducing manufacturing process costs.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Figure 1 is a diagram showing a conventional battery cell manufacturing apparatus.
Figure 2 is a perspective view of a battery cell manufacturing apparatus according to an embodiment of the present invention.
Figure 3 is a diagram showing an exploded state of the assembly step of a battery cell, which is an embodiment of the present invention.
FIG. 4 is a view of the first sealing device of FIG. 2 viewed in the x-axis direction.
Figure 5 is a diagram showing only the insulation member of Figure 4.
FIG. 6 is a view of the first sealing device of FIG. 2 viewed in the y-axis direction.
Figure 7 is a view of the first sealing device according to an embodiment of the present invention viewed in the -z-axis direction of Figure 2.
Figure 8 is a cross-sectional view of a sealing block according to another embodiment of the present invention.
Figure 9 is a cross-sectional view of a sealing block according to another embodiment of the present invention.

Hereinafter, with reference to the attached drawings, various embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification.

In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, so the present invention is not necessarily limited to what is shown. In the drawing, the thickness is enlarged to clearly express various layers and areas. And in the drawings, for convenience of explanation, the thicknesses of some layers and regions are exaggerated.

Additionally, when a part of a layer, membrane, region, plate, etc. is said to be “on” or “on” another part, this includes not only cases where it is “directly above” another part, but also cases where there is another part in between. . Conversely, when a part is said to be “right on top” of another part, it means that there is no other part in between. In addition, being "on" or "on" a reference part means being located above or below the reference part, and necessarily meaning being located "above" or "on" the direction opposite to gravity. no.

In addition, throughout the specification, when a part is said to "include" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary.

In addition, throughout the specification, when referring to “on a plane,” this means when the target portion is viewed from above, and when referring to “in cross section,” this means when a cross section of the target portion is cut vertically and viewed from the side.

Figure 2 is a perspective view of a battery cell manufacturing apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the battery cell manufacturing apparatus 10 according to an embodiment of the present invention includes sealing blocks 110 and 110' and heaters 130 and 130' in contact with one surface of the sealing blocks 110 and 110'. , temperature sensors 140, 140' provided in one area of the sealing blocks 110, 110', and insulation members 150, 150' surrounding the sealing blocks 110, 110' and heaters 130, 130'. and a sealing device including supports 160 and 160' supporting the above components.

There are a total of two sealing devices, and may include a first sealing device 11 and a second sealing device 12. The first sealing device 11 and the second sealing device 12 may be provided facing each other. The first sealing device 11 and the second sealing device 12 each include corresponding components. Therefore, the configurations described below will be described based on the configurations of the first sealing device 11.

The sealing device can move in the vertical direction (z-axis direction or -z-axis direction). For example, the second sealing device 12 may move in the vertical direction, and at this time, the sealing block 110 of the first sealing device 11 and the sealing block 110' of the second sealing device 12 You can access it.

The sealing block 110 can receive heat generated from the heater 130. The battery cell 100 may be placed on one side of the sealing block 110, and the battery cell 100 may receive heat from the sealing block 110.

Specifically, the sealing block 110 of the first sealing device 11 and the sealing block 110' of the second sealing device 12 may be in contact with each other on one side with the battery cell 100 interposed therebetween. At this time, heat is transferred from each sealing block 110 and 110' to the battery cell 100, so that the battery cell pouch can be heat-sealed and sealed.

The heater 130 is a heat source that heats the sealing block 110. The heater 130 may be provided in contact with one surface of the sealing block 110. Heat generated from the heater 130 may be transferred to the sealing block 110.

The heater 130 may be made of a metal material and may be electrically connected to generate heat. For example, the heater 130 may be capable of temperature control using Proportional-Integral-Differential controller (PID) control. The heater 130 may be made of a material with fast thermal response and fast heat recovery.

In the case of a conventional cartridge heater, there was a problem in that the thermal response was low and the heat recovery power was low, so it took a relatively long time to seal the battery cell 100, resulting in low process efficiency. On the other hand, since the heater 130 according to an embodiment of the present invention has higher thermal response and heat recovery power than the cartridge heater, the sealing time can be shortened to improve process efficiency.

The temperature sensor 140 is provided in one area of the sealing block 110 and can measure the temperature of the sealing block 110. The temperature sensor 140 may be installed at a position closest to one side of the sealing block 110 where the battery cell 100 is located. The temperature sensor 140 may be positioned in contact with the surface of the sealing block 110, or may be positioned by being mounted in a groove dug in the sealing block 110.

Since the conventional temperature sensor is provided in one area of the sealing tool where the cartridge heater is inserted, the problem is that it cannot accurately measure the temperature of the sealing block itself where the battery cell 100 is sealed, making it difficult to precisely control the sealing temperature. there was. On the other hand, the temperature sensor 140 according to an embodiment of the present invention is located in an area of the sealing block 110 that directly seals the battery cell 100, and specifically, the sealing block 110 where the battery cell 100 is located. Since it is provided at the position closest to one side of the block 110, the sealing temperature can be accurately measured. Therefore, based on this, the heat applied to the battery cell 100 can be precisely controlled, thereby improving the sealing quality of the battery cell.

The insulation member 150 is intended to maintain the heat of the sealing block 110 and the heater 130 and reduce heat loss from the outside, and may be provided while surrounding the sealing block 110 and the heater 130. .

The insulating member 150 may be a first insulating member 151, a second insulating member 152, and a third insulating member 153 assembled together. At this time, the first insulation member 151, the second insulation member 152, and the third insulation member 153 may be assembled by being fastened with fastening members.

The support portion 160 supports the sealing block 110, the heater 130, and the insulation member 150, and may be made of a high-strength material. The support portion 160 provides structural stability to the sealing devices 11 and 12 and can maintain the positions of the sealing block 110, heater 130, and insulation member 150.

Figure 3 is a diagram showing an exploded state of the assembly step of a battery cell, which is an embodiment of the present invention.

Referring to FIG. 3, the battery cell 100 inserted into the battery module to be stacked is a battery formed with an electrode assembly 200 including an anode, a cathode, and a separator, and a storage portion 310 in which the electrode assembly 200 is accommodated. Includes case 300.

The electrode assembly 200 may be a stacked electrode assembly 200 in which a plurality of anodes and cathodes cut into units of a certain size are sequentially stacked with a separator interposed therebetween. However, it is not limited to this and may be a wound-type assembly in which a structure in which an anode and a cathode are stacked with a separator interposed between them is wound.

The electrode lead 210 may be electrically connected to the electrode assembly 200. These electrode leads 210 may be provided as a pair. Parts of the pair of electrode leads 210 are located on the outside of the battery case 300 at the front and rear (both ends in the longitudinal direction of the electrode assembly, x-axis direction or -x-axis direction) of the battery case 300, respectively. may protrude. The configuration of the battery cell 100 described above is an example, and the shape of the battery cell 100 may be modified in various ways.

The battery case 300 may include a storage unit 310, a sealing unit 320, and a folding unit 330. The battery case 300 may include a first area 301 and a second area 302 corresponding to each other, and a first storage portion 310a and a second area 302 located in the first area 301. ) and a folding portion 330 located between the first accommodating portion 300a and the second accommodating portion 300b.

The first area 301 and the second area 302 may be divided by a folding part 330. The first area 301 and the second area 302 may be divided by the center area of the folding unit 330.

When manufacturing the battery case 300, a receiving portion 310 in which the electrode assembly 200 is stored may be formed in at least one of the first region 301 and the second region 302 through forming. The accommodating part 310 may include a first accommodating part 310a located in the first area 301 and a second accommodating part 310b located in the second area 302. A part of the electrode assembly 200 is built into each of the first accommodating part 310a and the second accommodating part 310b, and the first accommodating part 310a and the second accommodating part 310b have a folding part 330. The electrode assembly 200 can be accommodated to surround the electrode assembly 200 by being folded to face each other.

After the receiving part 310 is formed, the folding part 330 of the battery case 300 is bent 180 degrees based on the center of the folding part 330 to cover the receiving part 310, thereby forming the structure of the battery case 300. It can be completed.

The folding unit 330 may be a part that bends the battery case 300. The first area 301 and the second area 302 may correspond to and come into contact with each other while being folded along the center of the folding unit 330.

The electrode assembly 200 has a planar shape with four sides, and the folding portion 330 may be located on a portion corresponding to one of the four sides. The folding unit 330 is in close contact with one side 230 of the electrode assembly 200, and the sheet-like base material is folded at both edges of the folding unit 330 to form the first receiving part 310a and the second receiving part 310b. ) can be folded to face each other. Therefore, the width (P) of the folding portion 330 may be equal to the thickness (t) of the electrode assembly 200. On three sides excluding the side corresponding to the folding portion 330, the edges of the first accommodating portion 310a and the second accommodating portion 310b are joined to each other to form a sealing portion 320. The sealing portion 320 is sealed by a method such as heat fusion.

To explain in more detail, the sheet-shaped base material of the battery case 300 may be made of a laminated sheet including a metal layer and a resin layer. In particular, the laminate sheet may be an aluminum laminate sheet. The sheet-like base material includes a core made of a metal layer, a heat-sealed layer formed on one side of the core, and an insulating film formed on the other side of the core. The heat sealing layer acts as an adhesive layer using a polymer resin, such as modified polypropylene, such as CPP (Casted Polypropylene), and the insulating film may be formed of a resin material such as nylon or polyethylene terephthalate (PET). The structure and material of the pouch exterior material are not limited. In the sealing part 320, the heat-sealing layers of the first accommodating part 310a and the second accommodating part 310b come into contact with each other, and a heat-sealing process is performed while they are in contact, thereby forming the battery case 300. It is sealed.

The sealing part 320 may include a first sealing part 321, a second sealing part 325, and a third sealing part 327.

The first sealing part 321 and the second sealing part 325 may be sealing parts 320 located on both sides (x-axis direction or -x-axis direction) of the battery case 300. The first sealing part 321 may be an edge of one side of the battery case 300, and the second sealing part 325 may be an edge of the other side of the battery case 300. The first sealing part 321 and the second sealing part 325 may be the sealing part 320 where the electrode lead 210 is located.

The third sealing part 327 may be a sealing part 320 facing the folding part 330. The third sealing part 327 may be an edge of the sealing part 320 facing the folding part 330. The third sealing part 327 may be a sealing part 320 that does not include the electrode lead 210.

The first sealing part 321 and the second sealing part 325 may have a weaker sealing degree than the third sealing part 327. This is because the first sealing part 321 and the second sealing part 325 include the electrode lead 210. That is, since the heat-sealing layers do not contact each other in some areas of the first sealing part 321 and the second sealing part 325 where the electrode lead 210 is located, the first area 301 and the second area 302 ), the area in which the heat-sealing layers do not contact each other may be more than that of the third sealing portion 327.

After all of the sealing parts 320 are sealed, when the battery cell 100 is at a high temperature, the electrolyte located inside the battery cell 100 evaporates, causing the internal pressure of the battery cell 100 to increase and the battery cell 100 to evaporate. Due to this swelling, the sealed battery case 300 may be torn. In this case, the first sealing part 321 and the second sealing part 325, which have a relatively weaker sealing degree than the third sealing part 327, may be torn.

FIG. 4 is a view of the first sealing device of FIG. 2 viewed in the x-axis direction.

Referring to FIG. 4, the temperature sensor 140, which is an embodiment of the present invention, may be provided in the first groove 114 of the sealing block 110, and the insulation members 150 may be assembled together.

The sealing block 110 may be provided with a first groove 114 at a position close to one surface where the battery cell is located.

The first groove 114 is a groove located on one surface of the sealing block 114, and the temperature sensor 140 may be inserted into the first groove 114. The first groove 114 may correspond to the shape of the temperature sensor 140 or may be a groove larger than the size of the temperature sensor 140.

The first groove 114 is not limited to being provided on one side of the sealing block 110 shown in this drawing, and the first groove 114 may be provided on another side of the sealing block 110.

Hereinafter, the first insulating member 151, the second insulating member 152, and the third insulating member 153, which are the insulating members 150 according to an embodiment of the present invention, will be described in detail.

The first insulation member 151 may be provided in contact with one surface of the sealing block 110. For example, the first insulation member 151 may be provided in contact with one side of the sealing block 110.

The second heat insulating member 152 may be provided in contact with one side of the sealing block 110 and one side of the heater 130. For example, the second insulation member 153 may be provided in contact with the lower surface of the sealing block 110 (-z-axis direction) and the lower surface of the heater 130 (-z-axis direction).

The third insulation member 153 may be provided in contact with one surface of the heater 130. For example, the third insulation member 153 may be provided in contact with one side of the heater 130.

Below, the insulation member 150 will be described in more detail.

Figure 5 is a diagram showing only the insulation member of Figure 4.

Referring to Figure 5, the insulation member 150 according to an embodiment of the present invention includes a first insulation member 151, a second insulation member 152, and a third insulation member 153, and the first insulation member 153 The member 151, the second insulation member 152, and the third insulation member 153 may be assembled to form one insulation member.

Specifically, the first insulation member 151, the second insulation member 152, and the third insulation member 153 may be assembled by being fastened with a fastening member 155. For example, one surface of the first insulation member 151 and one surface of the second insulation member 152 are in contact with the sealing block 110 of FIG. 4 and are assembled, and the sealing block 110 of FIG. 4 and the heater ( One side of the second insulating member 152 and one side of the third insulating member 153 that are in contact with the lower surface of 130 may be assembled.

The assembled first insulation member 151, second insulation member 152, and third insulation member 153 may have a 'ㄷ' shape. However, the first insulating member 151, the second insulating member 152, and the third insulating member 153 are not limited to being assembled as described above. For example, the first insulating member 151, the second insulating member 152, and the third insulating member 153 may be partially provided without being assembled to each other, or only two insulating members may be assembled and positioned. there is.

That is, since the insulation members 150 can be provided separately or assembled, the shape of the insulation members 150 can be changed at the user's discretion, and there is no need to separately form the insulation members 150 corresponding to the changed shape. Costs can be reduced.

Additionally, while the conventional insulating member was provided only on the lower surface of the cartridge heater, the insulating member 150 according to an embodiment of the present invention may be provided while surrounding the sealing block 110 and the heater 130. Therefore, heat loss between the sealing block 110 and the heater 130 can be prevented, and the heat generated by the heater 130 can be maintained for a long time to prevent the temperature required for sealing from falling, thereby improving process efficiency.

FIG. 6 is a view of the first sealing device of FIG. 2 viewed in the y-axis direction. Figure 6 schematically shows only the sealing block and heater of the first sealing device.

Referring to FIG. 6, the sealing block 110, which is an embodiment of the present invention, includes one surface where the battery cells are located, and the heater 130 may be provided by being fastened to the sealing block 110.

The sealing block 110 according to an embodiment of the present invention includes a first surface 111 facing the support part. Battery cells may be located on the first surface 111. That is, the first side 111 may be one side of the sealing block 110 that is in contact with the battery cell.

Heat generated from the heater 130 may be transferred to the first surface 111 of the sealing block 110, and heat of the first surface 111 may be transferred to the battery cell. In this case, the first surface 111 of the first sealing device and the first surface 111' of the second sealing device (described later in FIGS. 8 and 9) come into contact with the battery cell between them, and the battery cell is heat-sealed. You can seal it.

The heater 130 according to an embodiment of the present invention may be fastened to the sealing block 110. The heater 130 includes a fastening hole 131 penetrating the heater, and a fastening member 135 is fastened to the fastening hole 131 to be coupled to the sealing block 110.

The heater 130 can be attached and detached from the sealing block 110 using the fastening member 135. Accordingly, since the sealing block 110 can be fastened to the heater 130 while separated from the cartridge heater, there is no need to manufacture a separate sealing device, thereby reducing manufacturing costs.

According to this drawing, the fastening hole 131 is located at the top of the edges of both sides of the heater 130, but it is not limited to that location and can be fastened to any location where it can be fastened to the heater 130.

FIG. 7 is a view of the first sealing device according to an embodiment of the present invention as viewed in the -z-axis direction of FIG. 2. Figure 8 is a cross-sectional view of a sealing block according to another embodiment of the present invention. Figure 9 is a cross-sectional view of a sealing block according to another embodiment of the present invention.

Figure 7 schematically shows only the sealing block of the first sealing device.

Referring to FIGS. 7 to 9 , one surface of the sealing block 110 includes a first surface 111 and a second surface 112. Specifically, one side of the sealing block 110 of the first sealing device includes a first side 111 and a second side 112, and one side of the sealing block 110' of the second sealing device includes the first side. It may include (111') and the second side (112'). The first surfaces 111 and 111' have the same configuration as described in FIG. 5, and detailed description will be omitted below.

The second surfaces 112 and 112' may have a configuration in which one area of the first surfaces 111 and 111' is grooved. The size of the second surfaces 112 and 112' may correspond to the size of a portion of the first surfaces 111 and 111' of the battery cells. Since the battery cell 100 is placed on the second surfaces 112 and 112', the battery cell 100 is stably positioned on the sealing block while being sealed, thereby reducing the sealing defect rate of the battery cell.

The second surfaces 112 and 112' may be formed on only one of the first sealing device and the second sealing device, or may be formed on both the first sealing device and the second sealing device.

Referring to FIG. 8, the second surface 112 may be formed only on the sealing block 110 of the first sealing device and may not be formed on the sealing block 110' of the second sealing device. In this case, the height (h1) of the second surface may correspond to the height (hc) of the battery cell.

When the height h1 of the second surface corresponds to the height hc of the battery cell, the second surface 112 may be provided only in one sealing block of the first sealing device and the second sealing device.

When a battery cell is placed on the second side 112 of the first sealing device, one side of the battery cell 100 that is not in contact with the second side 112 is the first side of the sealing block 110 of the second sealing device. (111) is encountered. In this case, since the height (h1) of the second surface of the first sealing device corresponds to the height (hc) of the battery cell, all areas of the battery cell 100 are in contact with the sealing blocks 110 and 110' and are evenly heated. The sealing quality of the battery cell can be improved.

Referring to FIG. 9, both the sealing blocks 110 and 110' of the first and second sealing devices may include second surfaces 112 and 112'. In this case, the height (h1, h2) of the second surface may be lower than the height (hc) of the battery cell.

If the height (h1, h2) of the second side is lower than the height (hc) of the battery cell, the second side (112, 112') may be provided with only one of the first sealing device and the second sealing device. Alternatively, it may be provided in both the first sealing device and the second sealing device.

When the second surfaces 112 and 112' are formed on the first sealing device and the second sealing device, respectively, the sum of the heights (h1 and h2) of the second surfaces of the first sealing device and the second sealing device is the battery cell It may correspond to the height (hc) of or be smaller than this. In this case, the heat generated on the second surface 112 of the first sealing device and the heat generated on the second surface 112' of the second sealing device are respectively applied to the battery cell 100. That is, since two heat sources transmit heat to the battery cell 100, the second surface 112 of the first sealing device transmits heat to the battery cell 100 with a single heat source, compared to the case where heat is transmitted to the battery cell 100 by each heat source. The battery cell 100 can be sealed with this small amount of heat. That is, the time required for heat recovery of the sealing blocks 110 and 110' of the first sealing device and the second sealing device is shortened, thereby shortening the sealing time and improving manufacturing efficiency.

According to the drawings, the number of second sides 112 and 112' is four, but it is not limited to this and can be changed at will by the user.

Battery cells manufactured using the battery cell manufacturing device described above can be applied to battery modules, battery packs containing them, and various devices. These devices can be applied to transportation means such as electric bicycles, electric cars, and hybrid cars, but the present invention is not limited thereto and can be applied to various devices that can use battery modules and battery packs containing them, which are also applicable to the present invention. It falls within the scope of invention rights.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims are also possible. falls within the scope of rights.

10: Battery cell manufacturing device
100: battery cell
110, 110': Ceiling block
111, 111': side 1
111, 112': Side 2
130, 130': Heater
140, 140': Temperature sensor
150, 150': insulation member

Claims (15)

In the battery cell manufacturing device,
Comprising a first sealing device and a second sealing device,
The first sealing device and the second sealing device,
A sealing block in contact with one area of the battery cell pouch;
a heater located in contact with one surface of the sealing block and transferring heat to the sealing block;
a temperature sensor provided in one area of the sealing block; and
A battery cell manufacturing device comprising a heat insulating member positioned in contact with one surface of at least one of the sealing block and the heater. In paragraph 1:
The heater is a battery cell manufacturing device provided by being fastened to the sealing block. In paragraph 2,
The heater is a battery cell manufacturing device including a fastening groove into which a fastening member fastened to the sealing block is inserted. In paragraph 1:
A battery cell manufacturing device in which the heater is formed of a metal material and is capable of electrically generating heat. In paragraph 4,
The heater is a battery cell manufacturing device made of a material with fast thermal response and heat recovery. In paragraph 1:
The insulation member includes a first insulation member provided in contact with one side of the sealing block,
A second heat insulating member provided in contact with one side of the sealing block and one side of the heater, and
It includes a third insulation member provided in contact with one surface of the heater,
The first insulation member, the second insulation member, and the third insulation member are each capable of being assembled. In paragraph 6:
One surface of the first insulation member in contact with the sealing block is fastened and assembled while one surface of the second insulation member is in contact with the sealing block,
A battery cell manufacturing device in which one surface of the second insulation member and one surface of the third insulation member, which are in contact with the sealing block and the lower surface of the heater, are fastened and assembled. In paragraph 1:
The sealing block includes a first surface on which the battery cell is located, and a second surface provided only on the sealing block of either the first sealing device or the second sealing device,
The second side is a battery cell manufacturing device in which one area of the first side is hollow. In paragraph 8:
A battery cell manufacturing device in which the size of the second surface corresponds to the size of the battery cell. In paragraph 8:
A battery cell manufacturing device wherein the height of the second surface corresponds to the height of the battery cell. In paragraph 1:
The sealing block includes a first surface on which the battery cell is located, and a second surface provided on the sealing block of the first sealing device and the sealing block of the second sealing device,
The second side is a battery cell manufacturing device in which one area of the first side is hollow. In paragraph 11:
The height of the second surface of the first sealing device is lower than the height of the battery cell,
A battery cell manufacturing device wherein the height of the second surface of the second sealing device is lower than the height of the battery cell. In paragraph 11:
The sum of the height of the second surface of the first sealing device and the height of the second surface of the second sealing device corresponds to the height of the battery cell. In paragraph 1:
The temperature sensor is a battery cell manufacturing device that is provided at a position closest to one surface of the sealing block where the battery cell is located. In paragraph 1:
The temperature sensor is provided by being inserted into a first groove located on one surface of the sealing block,
The first groove corresponds to the shape of the temperature sensor or is larger than the size of the temperature sensor.