WO2024053805A1

WO2024053805A1 - Secondary battery manufacturing system

Info

Publication number: WO2024053805A1
Application number: PCT/KR2023/003270
Authority: WO
Inventors: 이상돈
Original assignee: 이상돈
Priority date: 2022-09-07
Filing date: 2023-03-09
Publication date: 2024-03-14
Also published as: KR102496215B1

Abstract

A secondary battery manufacturing system for realizing the present invention includes: a separator and electrode automatic supply unit for automatically supplying a separator, a cathode electrode, and an anode electrode; an upper and lower separator unwinder for independently unwinding each separator on upper and lower sides; a separator and PET film rewinder for rewinding the separator and a PET film; first and second suction tension control systems for preventing or minimizing wrinkles, meanderings, and shrinkage of the separator; a cathode electrode alignment vision and automatic correction unit for photographing and correcting a position of the cathode electrode; an anode electrode alignment vision and automatic correction unit for photographing and correcting a position of the anode electrode; a stacking alignment vision and automatic correction unit for photographing and correcting a stacking process of the cathode electrode, the anode electrode, and the separator; and a laser cutting and knife cutter for cutting the separator using a laser method.

Description

Secondary battery manufacturing system

The present invention relates to a secondary battery manufacturing system. More specifically, it is a system manufactured using high speed technology, so it is compact, but can effectively perform a stacking process with a more efficient structure than before. It is about a battery manufacturing system.

Secondary batteries are batteries that are not used once and then discarded, but are used semi-permanently through charging. Recently, the number of uses is gradually expanding, from smartphones to electric vehicles.

Meanwhile, during the manufacturing of secondary batteries, there is a Z stacking process, which is currently being used by several companies.

However, due to the structural and methodological limitations of the existing process, the application of unmanned technology, intelligent technology, high speed technology, rationalization technology, and modularization technology Since this is not easy, the need for a groundbreaking system that is differentiated from existing ones emerges.

The purpose of the present invention is to provide a secondary battery manufacturing system that can effectively perform a stacking process with a compact but more efficient structure than the conventional system because it is a system manufactured using high speed technology.

In addition, the purpose of the present invention is to achieve stacking in a compact but more efficient structure than before by applying unmanned technology, intelligent technology, rationalization technology, and modularization technology to the system. ) The process can be performed effectively, and furthermore, by docking a large amount of equipment required by customers, facility expansion is not only simple, but also shortening facility installation time, installation cost reduction, and facility setup time can be maximized. The goal is to provide a secondary battery manufacturing system.

In order to achieve the above-described object, the system according to one aspect of the present invention includes unmanned technology, intelligent technology, high speed technology, rationalization technology, and modularization technology. We provide a secondary battery manufacturing system based on technology).

In one aspect, the secondary battery manufacturing system includes a separator and an electrode automatic supply unit that automatically supplies a separator, a cathode electrode, and an anode electrode; Upper and lower separator unwinders that independently unwind the upper and lower separators; A separator and PET film rewinder for rewinding the separator and PET film (PET-Film); First and second suction tension control systems that prevent or minimize wrinkles, tortuosity, and shrinkage of the separator; a cathode electrode alignment vision and automatic correction unit that photographs and corrects the position of the cathode electrode; An anode electrode alignment vision and automatic correction unit that photographs and corrects the position of the anode electrode; A Stacking Align Vision unit that photographs and corrects the stacking process of the cathode electrode, anode electrode, and separator; It includes laser cutting and knife cutters that cut the separator using a laser method.

In one aspect, the separator is a separator left and right transfer that transfers the separator to the left and right so that it can be stacked with a cathode electrode and an anode electrode. )and; A stacking plate unit and a stacking turret unit composed of two axes for high-speed stacking; It may include an actuator (EPC-CPC Actuator) that prevents the separator from twisting.

In one aspect, the secondary battery manufacturing system includes a cathode electrode feeding linear servo motor that generates power for supplying a cathode electrode; An anode electrode feeding linear servo motor that generates power for supplying an anode electrode; It further includes a cathode rotary connecting rod feeding unit and an anode rotary connecting rod feeding unit that minimize vibration due to inertial force and optimize high speed. can do.

In one aspect, the secondary battery manufacturing system includes a cell wrapping folding unit for cell wrapping; A separator vacuum plate for tension control of the separator; A cell feeding unit that supplies cells; It may further include a high-frequency induction heating unit 230 for cell adhesion.

In one aspect, the secondary battery manufacturing system may be docked and used according to customer requirements.

According to the present invention, since it is a system manufactured using high speed technology, it is compact but has a more efficient structure than the conventional system, which has the effect of effectively performing the stacking process.

In addition, according to the present invention, unmanned technology, intelligent technology, rationalization technology, and modularization technology are applied to the system to achieve stacking in a compact but more efficient structure than before. The process can be performed effectively, and by docking the large amount of equipment required by the customer, facility expansion is not only simple, but it can also maximize the reduction of facility installation time, installation cost reduction, and facility setup time. It works.

1 is a diagram of a separator applied to a secondary battery manufacturing system according to an embodiment of the present invention.

Figure 2 is a diagram of a PET film (PET-Film) applied to a secondary battery manufacturing system according to an embodiment of the present invention.

Figure 3 is an image of a cathode electrode magazine applied to a secondary battery manufacturing system according to an embodiment of the present invention.

Figure 4 is an image of an anode electrode magazine applied to a secondary battery manufacturing system according to an embodiment of the present invention.

Figure 5 is a schematic configuration diagram of a secondary battery manufacturing system according to an embodiment of the present invention.

Figure 6 is a modified example of Figure 5.

FIG. 7 is a diagram for explaining the separator and electrode automatic supply unit, high-frequency induction heating unit, cell press unit, and cell main feeding conveyor areas in FIG. 5.

FIG. 8 is a diagram for explaining the first and second suction tension control units, the separator left and right transferors, and the actuator area in FIG. 5.

Figure 9 is a diagram for explaining the cathode electrode alignment vision and automatic correction unit, anode electrode alignment vision and automatic correction unit, stacking alignment vision and automatic correction unit, and laser cutting and knife cutter areas.

Figure 10 is a diagram for explaining the stacking plate unit, stacking turret unit, cell wrapping folding unit, and separator vacuum plate area.

Figure 11 is a diagram for explaining the cathode rotary connecting rod feeding unit, anode rotary connecting rod feeding unit, and rotary connecting rod driver area.

FIG. 12 is an example of a configuration in which a plurality of secondary battery manufacturing systems of FIG. 5 are docked.

Figure 13 is a concept of a high-speed connecting rod driving servo motor (Rotary Connecting Rod Driving Servo Motor).

The optimal secondary battery manufacturing system for practicing the present invention includes a separator and an electrode automatic supply unit that automatically supplies a separator, a cathode electrode, and an anode electrode; Upper and lower separator unwinders that independently unwind the upper and lower separators; A separator and PET film rewinder for rewinding the separator and PET film (PET-Film); First and second suction tension control systems that prevent or minimize wrinkles, tortuosity, and shrinkage of the separator; a cathode electrode alignment vision and automatic correction unit that photographs and corrects the position of the cathode electrode; An anode electrode alignment vision and automatic correction unit that photographs and corrects the position of the anode electrode; A Stacking Align Vision unit that photographs and corrects the stacking process of the cathode electrode, anode electrode, and separator; It includes laser cutting and knife cutters that cut the separator using a laser method.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention.

However, since the description of the present invention is only an example for structural or functional explanation, the scope of the present invention should not be construed as limited by the embodiments described in the text.

For example, the embodiments can be modified in various ways and can take on various forms, so the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea.

In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all or only such effects, so the scope of the present invention should not be understood as limited thereby.

In this specification, the present embodiments are provided to complete the disclosure of the present invention and to fully inform those skilled in the art of the scope of the invention. And the present invention is only defined by the scope of the claims.

Accordingly, in some embodiments, well-known components, well-known operations and well-known techniques are not specifically described to avoid ambiguous interpretation of the invention.

Meanwhile, the meaning of the terms described in the present invention is not limited to the dictionary meaning and should be understood as follows.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is said to be “directly connected” to another component, it should be understood that no other components exist in between. Meanwhile, other expressions that describe the relationship between components, such as “between” and “immediately between” or “neighboring to” and “directly neighboring to”, should be interpreted similarly.

Singular expressions should be understood to include plural expressions, unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to the specified features, numbers, steps, operations, components, parts, or them. It is intended to indicate the existence of a combination, and should be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as consistent with the meaning they have in the context of the related technology, and cannot be interpreted as having an ideal or excessively formal meaning unless clearly defined in the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the embodiments, the same reference numerals are assigned to the same components, and in some cases, descriptions of the same reference numerals are omitted.

Figure 1 is an image of a separator applied to a secondary battery manufacturing system according to an embodiment of the present invention, and Figure 2 is an image of a PET film (PET-) applied to a secondary battery manufacturing system according to an embodiment of the present invention. Film), Figure 3 is an image of a cathode electrode magazine applied to a secondary battery manufacturing system according to an embodiment of the present invention, and Figure 4 is a secondary battery manufacturing according to an embodiment of the present invention. An image of an anode electrode magazine applied to the system, FIG. 5 is a schematic configuration diagram of a secondary battery manufacturing system according to an embodiment of the present invention, FIG. 6 is a modification of FIG. 5, and FIG. 7 is a schematic diagram of a secondary battery manufacturing system according to an embodiment of the present invention. In Figure 5, a diagram for explaining the separator and electrode automatic supply unit, high-frequency induction heating unit, cell press unit, and cell main feeding conveyor area, Figure 8 shows the first and second suction tension control units in Figure 5, the separator left and right transporters, A drawing for explaining the actuator area, FIG. 9 shows a description of the cathode electrode alignment vision and automatic correction unit, anode electrode alignment vision and automatic correction unit, stacking alignment vision and automatic correction unit, and laser cutting and knife cutter areas. 10 is a drawing for explaining the stacking plate unit, stacking turret unit, cell wrapping folding unit, and separator vacuum plate area, and FIG. 11 is a drawing for explaining the cathode rotary connecting rod feeding unit, anode rotary connecting rod feeding unit, and rotary connecting rod. FIG. 12, a diagram for explaining the driver area, is an example of a configuration in which a plurality of secondary battery manufacturing systems of FIG. 5 are docked.

Referring to these drawings, the secondary battery manufacturing system according to this embodiment is a system manufactured using high speed technology, so it is compact but has a more efficient structure than the conventional one, allowing the stacking process to be performed effectively.

In addition, the secondary battery manufacturing system according to this embodiment is compact but is more compact than before by applying unmanned technology, intelligent technology, rationalization technology, and modularization technology to the system. The efficient structure allows the stacking process to be performed effectively, and furthermore, by docking a large amount of equipment required by customers, facility expansion is not only simple, but also shortens facility installation time, reduces installation costs, and facilitates facility setup. To maximize time reduction.

The secondary battery manufacturing system according to this embodiment that can provide such effects includes a separator and an automatic electrode supply unit 100, an upper separator unwinder 200, as shown in FIGS. 5 and 6. Lower separator unwinder (200-1), separator and PET film (PET-Film) rewinder (300), first suction tension control system (Suction Tension Control System, 400), second suction tension control part (Suction) Tension Control System, 500), Cathode electrode Align Vision unit (600Vc), Anode electrode Align Vision unit (700Va), Stacking Align Vision and automatic calibration unit (Stacking Align Vision unit, 800Vs), Laser Cutting & Knife Cutter (900), Separator Left and right transfer (1000), Stacking plate unit, 1100), cathode electrode magazine (1200), anode electrode magazine (1300), actuator (EPC-CPC Actuator, 1400), stacking turret unit (1500), cathode electrode feeding Linear servo motor (Cathode electrode feeding linear servo motor, 1600), Anode electrode feeding linear servo motor (1700), Cathode rotary connecting rod feeding unit (Cathode Rotary connecting rod feeding unit, 1800), Anode Rotary connecting rod feeding unit (1900), Cell Wrapping folding unit (2000), Separator Vacuum Plate (2100), Cell feeding unit (2200) ), a high-frequency induction heating unit (230), a cell press unit (2400), a cell main feeding conveyor (2500), and a rotary connecting rod driving mechanism (Rotary connecting rod driving mechanism, 2600). You can.

The separator and electrode automatic supply unit 100 is a means for automatically supplying a separator and electrodes, that is, a cathode electrode and an anode electrode.

The upper separator unwinder (200) serves to unwind the separator on the upper side, and the lower separator unwinder (200-1) serves to unwind the separator on the lower side. . Since the separator is in the form of a roll as shown in Figure 1, unwinding work is required.

The separator and PET film (PET-Film) rewinder (300) serves to rewind the separator (Separator) of FIG. 1 and the PET film (PET-Film) of FIG. 2.

The first suction tension control system (Suction Tension Control System, 400) and the second suction tension control system (Suction Tension Control System, 500) are means to prevent or minimize wrinkles, tortuosity, and shrinkage of the separator. .

The cathode electrode alignment vision and automatic correction unit (600Vc) is responsible for imaging and correcting the position of the cathode electrode.

The anode electrode alignment vision and automatic correction unit (700Va) functions to image and correct the position of the anode electrode.

The Stacking Align Vision unit (800Vs) is responsible for filming and correcting the stacking process of the cathode electrode, anode electrode, and separator. Because of these, the quality of the product improves.

Laser Cutting & Knife Cutter (900) is a means of cutting a separator using a laser method. Because the laser method is applied, the cutting quality is good.

The separator left and right transfer (1000) transfers the separator to the left and right so that the roll-shaped separator can be stacked with the cathode electrode and anode electrode. It plays a role.

The stacking plate unit (1100) consists of two axes and is designed to implement technology to increase stacking speed.

The cathode electrode magazine (1200) is a device that carries a cathode electrode, and the anode electrode magazine (1300) is a device that carries an anode electrode.

The actuator (EPC-CPC Actuator, 1400) is a means to prevent the meandering of the separator.

By applying the stacking turret unit (1500), it becomes possible to implement high speed technology of the system.

The cathode electrode feeding linear servo motor (1600) is a means for generating power for supplying the cathode electrode, and the anode electrode feeding linear servo motor (Anode electrode feeding linear servo motor (1700) ) is a means of generating power for supplying the anode electrode.

By applying the cathode rotary connecting rod feeding unit (1800) and the anode rotary connecting rod feeding unit (1900), vibration due to inertial force is minimized and high speed is optimized. can do.

Cell Wrapping folding unit (2000) is a means for cell wrapping. In order to maximize quality through cell wrapping folding, this system is equipped with a separator vacuum plate (2100) for tension control of the separator.

The separator vacuum plate (2100) is a means for tension control of the separator.

A cell feeding unit (2200) is a means for supplying cells.

The high-frequency induction heating unit 230 is a means for cell adhesion. By applying the high-frequency heating method according to the high-frequency induction heating unit 230 to the system, an integrated cell adhesion system can be built.

The cell press unit (2400) is a means for pressurizing cells, and the cell main feeding conveyor (2500) is a means for supplying cells. Additionally, the rotary connecting rod driving mechanism (2600) may include a series of motors for driving the rotary connecting rod.

The operation and effects of these compositions and structures will be examined in more detail with reference to FIGS. 7 to 13.

Referring to FIG. 7, as described above, this system includes a separator, an automatic electrode supply unit 100, a high-frequency induction heating unit 2300, a cell press unit 2400, and a cell main feeding conveyor. It includes a feeding conveyor (2500), which makes automatic supply replacement possible.

In other words, a Cell Main feeding conveyor (2500) is applied to the system to automate finished product logistics using modularization technology.

In addition, by applying high-frequency induction heating technology, an integrated cell adhesion system can be built. Therefore, facility expansion is simple, and facility installation time reduction, installation cost reduction, and facility setup time can be maximized. In addition to this, intelligent technology is applied to this system.

Referring to Figure 8, as described above, this system includes a first suction tension control system (Suction Tension Control System, 400), a second suction tension control system (Suction Tension Control System, 500), and a separator left and right transporter. right transfer, 1000) and an actuator (EPC-CPC Actuator, 1400), and their inclusion creates Unmanned technology, Intelligent technology, High speed technology, and Rationalization technology. , Modularization technology may be included.

In particular, when the separator left and right transfer (1000) operates at instantaneous high speed, the two-stage first and second suction tension control units ensure that there are no wrinkles, tortuosity, or shrinkage of the separator. (Suction Tension Control System, 400,500) is applied.

At this time, the actuator (EPC-CPC Actuator, 1400) that controls the meandering is also applied as an actuator moving type to the entire frame.

In this embodiment, the driving method of the separator left and right transfer (1000) is a rotary connecting rod driving mechanism (2600) type, so that speed can be maximized.

Referring to FIG. 9, as described above, this system includes a cathode electrode Align Vision unit (600Vc) and an anode electrode Align Vision unit (700Va). , Stacking Align Vision unit (800Vs), Laser Cutting & Knife Cutter (900).

In particular, this system is equipped with a cathode electrode Align Vision unit (600Vc) and an anode electrode Align Vision unit (Anode electrode Align Vision unit) for intelligent technology. 700Va), and is implemented based on Stacking Align Vision and automatic calibration unit (Stacking Align Vision unit, 800Vs).

During stacking, the alignment of the It is applied by executing the final automatic correction alignment with the motor and stacking. After completing stacking, the separator cutting method can be performed by laser cutting and knife cutter (Laser Cutting & Knife Cutter, 900).

Referring to Figure 10, as described above, this system includes a stacking plate unit (1100), a stacking turret unit (1500), a cell wrapping folding unit (2000), and a separator vacuum plate. (Separator Vacuum Plate, 2100).

In particular, this system is manufactured based on turret 2-axis stacking & cell folding because this equipment includes the concept of high speed technology.

By configuring the stacking plate unit (1100) into two axes using technology to increase the stacking speed, when stacking the top axis after turret operation, the bottom axis is wrapped and folded as a separator. (Wrapping folding) method is applied.

In order to maximize quality through cell wrapping folding, this system is equipped with a separator vacuum plate (2100) for tension control of the separator.

Referring to FIG. 11, the system includes a cathode rotary connecting rod feeding unit (1800), an anode rotary connecting rod feeding unit (1900), and a rotary connecting rod as described above. Includes a rotary connecting rod driving mechanism (2600).

In particular, this system is manufactured based on intelligent technology and high speed technology.

By combining the rotary connecting rod driving mechanism, which is a stacking high-speed technology, and a linear servo motor, vibration due to inertial force can be minimized while optimizing high speed.

Rotary motion is driven by linear reciprocating motion by the rotary connecting rod method through the operation of the rotary connecting rod driving servo motor, and the anode electrode and cathode electrode are It is a stable, low-noise, and low-vibration system that transports electrodes.

Meanwhile, referring to Figure 12, this system is a method of docking a large number of facilities required by customers, so facility expansion is simple and can maximize facility installation time, installation cost reduction, and facility setup time reduction. You can.

Referring to this, a two-stage simultaneous transfer can be applied to transfer the electrodes (cathode electrode & anode electrode) at high speed.

The first-stage drive is driven by a Rotary Connecting Rod Driving Servo Motor (7), and the second-stage simultaneous drive is driven by a linear servo motor on axes ⓒ and ⓐ, generating vision data. Only the calculated position value determines the final electrode position data within the set driving range distance.

Stacking Position Unit (5) forms the standard for Stacking Align, and after stacking is completed, Dual Turret Stack & Folding of Stacking Position Unit (5) Folding) can be composed of two axes.

According to this embodiment, which operates based on the structure described above, it is a system manufactured using high speed technology, so it is possible to effectively perform the stacking process with a compact but more efficient structure than the conventional system.

In addition, according to this embodiment, unmanned technology, intelligent technology, rationalization technology, and modularization technology are applied to the system to achieve stacking in a compact but more efficient structure than before. ) The process can be performed effectively, and furthermore, by docking a large amount of equipment required by customers, facility expansion is not only simple, but also shortening facility installation time, installation cost reduction, and facility setup time can be maximized. there is.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations fall within the scope of the claims of the present invention.

As described above, the secondary battery manufacturing system according to the present invention is capable of ensuring quality safety in secondary battery automobile batteries, power storage batteries (ESS), laminating, stacking, all-solid-state batteries, and high-capacity adhesive quality, and secondary battery When manufacturing high-capacity batteries such as batteries for electric vehicles and power storage batteries (ESS), belt press laminating manufacturing technology using high-frequency indirect heating is applied to improve battery productivity, eliminate the cause of ignition due to adhesive manufacturing, and ensure quality stability. and can improve all-solid adhesion and wetting properties.

Claims

It is a system built on the basis of unmanned technology, intelligent technology, high speed technology, rationalization technology, and modularization technology,

A separator and electrode automatic supply unit that automatically supplies a separator, cathode electrode, and anode electrode;

Upper and lower separator unwinders that independently unwind the upper and lower separators;

Separator and PET film rewinder for rewinding the separator and PET film (PET-Film);

First and second suction tension control systems (Suction Tension Control System) that prevent or minimize wrinkles, tortuosity, and shrinkage of the separator;

A cathode electrode alignment vision and automatic correction unit that photographs and corrects the position of the cathode electrode;

An anode electrode alignment vision and automatic correction unit that photographs and corrects the position of the anode electrode;

Stacking Align Vision unit, which photographs and corrects the stacking process of the cathode electrode, anode electrode, and separator; and

Laser Cutting & Knife Cutter that cuts the separator using a laser method.

A secondary battery manufacturing system comprising:
According to paragraph 1,

The separator includes a separator left and right transfer device that transfers the separator to the left and right so that it can be stacked with a cathode electrode and an anode electrode;

A stacking plate unit and a stacking turret unit composed of two axes for high-speed stacking; and

A secondary battery manufacturing system characterized by including an actuator (EPC-CPC Actuator) that prevents the separator from twisting.
According to paragraph 2,

A cathode electrode feeding linear servo motor that generates power for supplying a cathode electrode;

An anode electrode feeding linear servo motor that generates power for supplying an anode electrode; and

It further includes a cathode rotary connecting rod feeding unit and an anode rotary connecting rod feeding unit that minimize vibration due to inertial force and optimize high speed. A secondary battery manufacturing system characterized by:
According to paragraph 3,

Cell Wrapping folding unit for Cell Wrapping;

Separator Vacuum Plate for tension control of the separator;

Cell feeding unit that supplies cells; and

A secondary battery manufacturing system further comprising a high-frequency induction heating unit 230 for cell adhesion.
According to paragraph 1,

The secondary battery manufacturing system is characterized in that it can be used by docking according to customer requirements.