KR20170112895A - Apparatus and Method for Manufacturing Electrode Assembly and Electrode Assembly manufactured by using the same - Google Patents

Abstract

The present invention relates to an electrode assembly manufacturing apparatus capable of manufacturing an electrode assembly by laminating electrodes and a separator, and more particularly, to an apparatus for manufacturing an electrode assembly, which comprises a first roll wound on one side of a separation membrane strip and a second roll wound on the other side of the separation membrane strip Wherein the first roll and the second roll each comprise a separation membrane supply unit for extracting the separation membrane strip and supplying the separation membrane strip toward the core portion side of the separation membrane strip located between the first and second rolls; A separator folding unit for winding the separator strip around the core portion to form a separator or a hull which is folded spirally around the core portion; A first electrode stacking unit for stacking the first electrode member on one surface of the separation membrane or the hull; And a second electrode stacking unit for stacking a second electrode member on the other surface of the separation membrane or the hull; The separator folding unit is configured to fold the first electrode member and the second electrode member stacked in the separation membrane strip so that the first electrode member and the second electrode member are stacked on the separation membrane or the hull, The strip is wound to form an electrode assembly in which the first electrode member and the second electrode member are interposed between the respective layers of the separation membrane and the hull.

Description

Technical Field [0001] The present invention relates to an electrode assembly manufacturing apparatus and method, and an electrode assembly manufactured using the same,

The present invention relates to an apparatus and method for manufacturing an electrode assembly capable of manufacturing an electrode assembly by laminating electrodes and a separator, and an electrode assembly manufactured using the same.

Generally, a secondary battery is a battery which can be repeatedly used through discharging which converts chemical energy into electric energy and reverse charging. Examples of the secondary battery include a Ni-Cd battery, a Ni-MH battery, a Li-metal battery, a Li-ion battery, and a Li- Polymer battery, hereinafter referred to as "LIPB").

The secondary battery is composed of an anode, a cathode, an electrolyte, and a separator, and stores and generates electricity using voltage difference between different anode and cathode materials. Here, the discharge is to move electrons from a cathode having a high voltage to a cathode having a low voltage (generating electricity as much as the voltage difference of the anode), and charging means transferring the electrons again from the anode to the cathode where the anode material receives electrons and lithium ions And returned to the original metal oxide. That is, when the secondary battery is charged, the charge current flows as the metal atoms move from the anode to the cathode through the separator, and when discharged, the metal atoms move from the cathode to the anode and the discharge current flows.

Such a secondary battery is widely used in IT products, automobiles, and energy storage, and is attracting attention as an energy source. In the field of IT products, such secondary batteries are required to be continuously used for a long time, and to be reduced in size and weight. In the field of automobiles, high output, durability, and stability for eliminating the risk of explosion are required. In the energy storage field, surplus power produced by wind power, solar power generation, and the like is stored. As the secondary battery is used as a fixed type, a secondary battery of a more relaxed condition can be applied.

Among these secondary batteries, lithium secondary batteries have been in research and development since the early 1970s, and in 1990, lithium-ion batteries using carbon instead of lithium metal as cathodes were developed and put into practical use. The lithium secondary battery is characterized in that it has a cycle life of 500 times or more and a short charging time of 1 to 2 hours. Thus, the lithium secondary battery has the highest sales growth rate among the secondary batteries and can be lighter by 30 to 40% than the nickel-hydrogen battery. In addition, the lithium secondary battery has the highest voltage per unit cell (3.0 to 3.7 V) among the existing secondary batteries, has excellent energy density, and can have characteristics optimized for mobile devices.

Such a lithium secondary battery is generally classified into a liquid electrolyte cell and a polymer electrolyte cell depending on the type of the electrolyte. A battery using a liquid electrolyte is called a lithium ion battery, and a battery using a polymer electrolyte is called a lithium polymer battery. In addition, the exterior material of the lithium secondary battery can be formed into various types, and typical exterior materials include cylindrical, prismatic, pouch, and the like.

Inside the casing of the lithium secondary battery, an electrode assembly including a cathode, a cathode, and a separator (separator) interposed between the cathode and the anode is provided. Such an electrode assembly is divided into a jelly-roll type (wound type) and a stacked type (laminated type) according to its structure.

In order to solve the problems of the jelly-roll type electrode assembly and the stack type electrode assembly, a full cell or a positive electrode / separator / negative electrode (anode) having a positive electrode / separator / A stack / folding type electrode assembly was developed in which a bicell of a membrane / separator / anode (cathode) structure was laminated using a long continuous membrane strip.

The conventional stack / folding type electrode assembly manufacturing method is complicated in that the arrangement of the pull cells or the bi-cells in the separator strip is complicated, and all of the pull cells or bi-cells included in the electrode assembly are arranged in advance The winding process of the separator strip is very difficult. Therefore, since the conventional stack / folding type electrode assembly manufacturing method is difficult to automate, it takes a lot of time to manufacture the electrode assembly, resulting in a problem of low productivity. In addition, the conventional stack / folding type electrode assembly manufacturing method has a problem that the performance of the secondary battery manufactured using the electrode assembly and the electrode assembly is deteriorated due to easy carelessness and error in operation.

It is an object of the present invention to provide an apparatus and method for manufacturing an electrode assembly, which is easy to automate and simplify a manufacturing process, and an electrode assembly manufactured using the same.

In order to solve the above problems, an apparatus for manufacturing an electrode assembly according to a preferred embodiment of the present invention includes a first roll wound on one side of a separation membrane strip, and a second roll wound on the other side of the separation membrane strip, Wherein the first roll and the second roll respectively feed the separation membrane strip toward the core portion side of the separation membrane strip located between the first roll and the second roll; A separator folding unit for winding the separator strip around the core portion to form a separation membrane or a hull which is spirally folded about the core portion and includes the core portion; A first electrode stacking unit for stacking the first electrode member on one surface of the separation membrane or the hull; And a second electrode stacking unit for stacking a second electrode member on the other surface of the separation membrane or the hull; The separator folding unit is configured to fold the first electrode member and the second electrode member stacked in the separation membrane strip so that the first electrode member and the second electrode member are stacked on the separation membrane or the hull, The strip is wound and the core portion is rotated in a predetermined direction to form an electrode assembly in which the first electrode member and the second electrode member are sandwiched between respective layers of the separation membrane and the hull.

According to another preferred embodiment of the present invention, there is provided an apparatus for manufacturing an electrode assembly, comprising: a first roll wound on one side of a separation membrane strip; and a second roll wound on the other side of the separation membrane strip, Wherein the first roll and the second roll respectively feed the separation membrane strip toward the core portion side of the separation membrane strip located between the first roll and the second roll; A separator folding unit for winding the separator strip around the core portion to form a separation membrane or a hull which is spirally folded about the core portion and includes the core portion; A first electrode stacking unit for stacking an anode on one surface of the separator or the hull; And a second electrode stacking unit for stacking a cathode on the other surface of the separation membrane or the hull; The separator folding unit may take up the separation membrane strip so that the anode and the cathode can be wrapped in the separator strip newly stacked each time the anode and the cathode are stacked on the separator or the hull, The electrode assembly alternately interposed between the layers of the separation membrane and the hull is formed.

The apparatus and method for manufacturing an electrode assembly according to the present invention and the electrode assembly manufactured using the apparatus and method have the following effects.

First, the present invention can perform the winding and folding operation of the separator strip at a fixed position corresponding to the core portion of the separator strip, so that all of the electrode members included in the electrode assembly are separated from the separator strip Folded type electrode assembly in which the electrode assembly is moved from one end of the separator strip to the other end of the separator, and the electrode assembly assembly is automatically manufactured. And deterioration in the quality of the secondary battery manufactured using the electrode assembly and the electrode assembly due to operational errors or carelessness can be effectively prevented.

Second, since the electrode assembly can be manufactured by simultaneously winding the separator strips supplied from both directions about the core portion, the time required for manufacturing the electrode assembly can be further reduced.

1 is a front view of an electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention.
Fig. 2 is a side view of the electrode assembly manufacturing apparatus shown in Fig. 1. Fig.
3 is a front view of the second roll shown in Fig.
Fig. 4 is a front view of the separator folding unit shown in Fig. 2; Fig.
5 is a plan view of the membrane folding unit shown in Fig.
Fig. 6 is a view showing the manner in which the membrane folding unit shown in Fig. 4 spirally folds the separator strip. Fig.
7 is a plan view of a first electrode member according to an aspect;
8 is a plan view of a second electrode member according to an aspect.
FIG. 9 is a perspective view of an electrode assembly according to an aspect of the present invention, which is manufactured using the electrode members shown in FIGS. 7 and 8. FIG.
FIGS. 10 to 12 are views for explaining a method of stacking the electrode members shown in FIGS. 7 and 8. FIG.
13 is a plan view of a first electrode member according to another embodiment;
14 is a plan view of a second electrode member according to another aspect;
FIG. 15 is a perspective view of an electrode assembly according to another embodiment manufactured using the electrode members shown in FIGS. 13 and 14. FIG.
16 is a plan view of the electrode assembly manufacturing apparatus shown in Fig.
FIG. 17 is a plan view of the first electrode supply unit and the first electrode stacking unit shown in FIG. 16; FIG.
Fig. 18 is a front view of the first electrode supply unit and the first electrode stacking unit shown in Fig. 17; Fig.
19 is a view showing an aspect in which the first electrode stacking unit and the second electrode stacking unit shown in FIG. 16 stack electrode members on a separation membrane or a hull.
FIG. 20 is a perspective view of an electrode assembly in which the separation of the separator strip and the stacking of the electrode members are completed by the electrode assembly manufacturing apparatus shown in FIG. 1; FIG.
Fig. 21 is a side view of the electrode assembly manufacturing apparatus shown in Fig. 1 showing the positional relationship between the cutting unit and the assembly transfer unit. Fig.
22 is a view showing an aspect of cutting a connection point between a separation membrane or a hull and a separation membrane strip using the cutting unit shown in Fig.
Figure 23 is a perspective view of an electrode assembly separated from the separator strip by the cutting unit shown in Figure 21;
24 is a view showing a driving aspect of the assembly transfer unit shown in Fig.
Fig. 25 is a perspective view of an electrode assembly in which a separation membrane spiral is fixed by a taping unit shown in Fig. 21. Fig.
26 is a sectional view taken along the line I-I 'of the electrode assembly shown in Fig.
FIG. 27 is a flowchart for explaining a method of manufacturing an electrode assembly using the apparatus for manufacturing an electrode assembly shown in FIG. 1; FIG.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the drawings, the size of each element or a specific part constituting the element is exaggerated, omitted or schematically shown for convenience and clarity of description. Therefore, the size of each component does not entirely reflect the actual size. In the following description, it is to be understood that the detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a front view of an electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a side view of the electrode assembly manufacturing apparatus shown in FIG.

The electrode assembly manufacturing apparatus 1 according to a preferred embodiment of the present invention is hereinafter referred to as an electrode assembly manufacturing apparatus 1 having a separator strip F, a first electrode member E1, (E2) are stacked in a predetermined order to manufacture a stack / folding type electrode assembly. Referring to Figs. 1 and 2, this electrode assembly manufacturing apparatus 1 includes: a separation membrane supply unit 10 for supplying a separation membrane strip F; A membrane folding unit 20 for winding the separation membrane strip F supplied from the separation membrane feed unit 10 around the core portion C to form a spiral folded separation membrane or a hull H; A first electrode supply unit (30) for supplying the first electrode member (E1); A first electrode stacking unit 40 for stacking the first electrode member E1 supplied from the first electrode supply unit 30 on one surface of the separation membrane or the hull H; A second electrode supply unit 50 for supplying the second electrode member E2; And a second electrode stacking unit 60 for stacking the second electrode member E2 supplied from the second electrode supply unit 50 on the other surface of the separation membrane or the hull H,

First, the separation membrane feeding unit 10 is a device for feeding a separation membrane strip F for manufacturing the electrode assembly A.

The separation membrane feed unit 10 has a first roll 11 on which one side of the separation membrane strip F is previously wound and a second roll 12 on which the other side of the separation membrane strip F is previously wound. The material of the separation membrane strip F is not particularly limited and may be composed of a material commonly used in the production of a separation membrane.

The first roll 11 and the second roll 12 are spaced apart from each other by a predetermined distance so that the core portion C of the separation membrane strip F is positioned therebetween as shown in Fig. The core portion C of the separation membrane strip F refers to a winding core for winding the separation membrane strip F in a state in which the first electrode member E1 and the second electrode member E2 are interposed, F in the middle portion between one side and the other side. One end of the core portion C is connected to one side of the separation membrane strip F wound on the first roll 11 and the other end of the core portion C is connected to the separation membrane strip F wound on the second roll 12 F).

In the first roll 11, one side of the separation membrane strip F is wound in the form of a roll, as shown in Fig. The first roll 11 can supply the separator strip F with a predetermined length in a stepwise manner to the core portion C according to the manufacturing process of the electrode assembly A. [

At least one first driven roller 10a and a first dancing roller 10b may be installed between the first roll 11 and the core portion C as shown in FIG. The first driven roller 10a is installed to seat the separation membrane strip F1 fed from the first roll 11 and can guide the separation membrane strip F to the core section C. [ As shown in Fig. 1, the first dancing roller 10b reciprocates along a predetermined path to regulate the tension acting on the separation membrane strip F1, and at the same time, the separation membrane strip F supplied from the first roll 11, (F1) may be temporarily stored and then transferred to the core portion (C).

If the first roll 11 does not uniformly supply the separator strip F to the core portion C due to skewing or other causes of the separator strip F, the quality of the rechargeable battery is adversely affected. The separation film supply unit 10 includes a reference laser head 13 capable of irradiating a reference laser at a predetermined position of the first roll 11 and a camera 14 ).

Since the reference laser emitted from the reference laser head 13 is always irradiated to the predetermined position of the first roll 11, the position of the separation film strip F wound on the first roll 11 with this reference laser is compared It is possible to confirm whether or not the separator strip F is wound at a predetermined position. Therefore, when the separation membrane strip F can not be wound at the predetermined position, the position of the separation membrane strip F can be adjusted to a predetermined position using the reference laser.

The camera 14 is provided so as to photograph the separation membrane strip F1 supplied from the first roll 11 and is used to capture the separation membrane F by using the image of the separation membrane strip F photographed using the camera 14. [ You can detect meandering. Accordingly, when the meander of the separation membrane strip F occurs, the path of the separation membrane strip F can be compensated for by the meandering angle to prevent deterioration of the quality of the secondary battery due to meandering.

On the second roll 12, as shown in Fig. 1, the other side of the separation membrane strip F opposite to one side of the separation membrane strip F described above is wound. The second roll 12 can feed the separator strip F of a predetermined length in a stepwise manner and toward the core portion C according to the manufacturing aspect of the electrode assembly A. [

At least one second driven roller 10c and a second dancing roller 10d may be installed between the second roll 12 and the core portion C as shown in Fig. The second driven roll 10c is installed to seat the separation membrane strip F2 supplied from the second roll 12 and can guide the separation membrane strip F to the core portion C. [ 1, the second dancing roller 10d reciprocates along a predetermined path to regulate the tension acting on the separation membrane strip F and at the same time the separation membrane strip F supplied from the second roll 12, (F2) may be temporarily stored and then transferred to the core section (C).

3 is a front view of the second roll shown in Fig.

One side of the separation membrane strip F is wound on the first roll 11 and the other side of the separation membrane strip F is wound on the second roll 12 as described above. However, a fabric having a strip shape elongated along the lengthwise direction is wound around a winding roll so that one end thereof is in a free-end state, and is stored in a roll form. For example, the separator strip F is previously wound and stored in a roll form on one side of the first roll 11 so that the other side is in a free-end state, and the other side of the separator strip F, Can be wound on the second roll 12 as a ratio in the production of the assembly A.

3, the second roll 12 includes a take-up jig 12a capable of gripping or releasing the other end of the separation membrane strip F and a second jig 12b (12b) which can be reciprocated so as to be drawn into the inside of the second roll (12) or to be drawn out to the outside of the second roll (12).

The take-up jig 12a may have a grip shape capable of grasping or grasping the other end of the separation membrane strip F, as shown in Fig. The winding jig 12a has a predetermined size to be able to move in and out through an opening (not shown) of the second roll 12.

The first transfer member 12b may be constituted by a cylinder in which the winding jig 12a is fixed to the end of the cylinder rod 12c, as shown in Fig. The first conveying member 12b can reciprocate the cylinder rod 12c to allow the winding jig 12a to move in and out of the second roll 12.

The second roll 12 is configured such that the winding jig 12a grasps the other end of the separation membrane strip F placed in the free end state between the first roll 11 and the second roll 12, 12, and the other side of the separation membrane strip F can be wound around the circumferential surface thereof. The second roll 12 is driven to rotate in a direction opposite to the one direction when the separation membrane strip F is supplied and can feed the separation membrane strip F toward the core portion C.

Fig. 4 is a front view of the separator folding unit shown in Fig. 2, Fig. 5 is a plan view of the separator folding unit shown in Fig. 4, and Fig. 6 is a view showing a state in which the separator folding unit shown in Fig. 4 spirally folds the separator strip Fig.

Next, the membrane folding unit 20 is a device for winding the separator strip F supplied from the separator feed unit 10 around the core portion C as a center.

The electrode assembly manufacturing apparatus 1 forms the separation membrane or the hull H by spirally folding the separation membrane strip F so that the first electrode member E1 and the second electrode member H1 are sandwiched between the respective layers of the separation membrane or the hull H, The electrode assembly A is manufactured through the electrode member E2. 2, the separator folding unit 20 is provided between the first roll 11 and the second roll 12 so as to correspond to the core portion C, Is wound around the core portion (C) to form a separation membrane or a hull (H) spirally folded about the core portion (C) including at least the core portion (C).

4, the separator folding unit 20 includes a first electrode member E1 and a second electrode member E2 that are newly stacked on the outer surface of the separation membrane or the hull H and the separation membrane or the hull H, A folding jig 22 capable of gripping or releasing the folding jig 22 together with the folding jig 22, a rotary member 24 axially coupled to the folding jig 22 to rotate the folding jig 22, H, or a second conveying member 26 that can be reciprocated so as to move away from the separation membrane or the hull H, as shown in Fig. The newly stacked first electrode member E1 and the second electrode member E2 are connected to the outer surface of the core portion C or the separation membrane or the hull H without being wrapped by the separation membrane strip F Refers to a first electrode member E1 and a second electrode member E2 in a stacked state.

In order to stably wind the separation membrane strip F around the core portion C, the separator membrane H, the hull H, the electrode members F1 and F2, It is preferable that the strip F is wound. 4, the folding jig 22, the rotary member 24, and the second conveying member 26 are connected to the core portion C, the separation membrane or the hull H, and the electrode member F1 , F2, and the like are provided between the two.

As shown in Fig. 5, the folding jig 22 has a structure in which one end of the separation membrane or the hull H and one end of the newly stacked first electrode member E1 and the second electrode member E2 are gripped, It is possible to have a forceps 22a. 4, the folding jig 22 may include a first electrode member E1 and a second electrode member E2 that are stacked at the upper and lower ends of one end of the separation membrane or the hull H, A pair of clamps 22a can be provided so as to grip or release the upper end and the lower end of the end,

The rotating member 24 is constituted by a motor, as shown in Fig. 5, and can be axially coupled to the rotation axis of the folding jig 22. [ The rotating member 24 rotates the folding jig 22 about the rotation axis and rotates the folding jig 22 against the separation membrane or the hull H gripped by the folding jig 22 and the newly stacked first electrode members E1, The two electrode members E2 can be rotated together.

5, the second conveying member 26 includes a linear rail 26a provided so as to traverse the lower side of the separation membrane or the hull H and a second rail 26b movably coupled to the linear rail 26a, And may have a linear motor 26b which is close to the separation membrane or the hull H or which can reciprocate away from the separation membrane or the hull H, 4, the linear motor 26b is engaged with the rotary member 24 so that the rotary member 24 and the folding jig 22 are separated from each other by the separation membrane It can be reciprocated so as to approach the hull (H) or away from the separation membrane or the hull (H).

Hereinafter, a method of forming the electrode assembly A by laminating the separation membrane strip F, the first electrode member E1 and the second electrode member E2 will be described with reference to FIG.

The first electrode stacking unit 40 stacks the first electrode member E1 in contact with one surface of the core portion C while the second electrode stacking unit 60 stacks the second electrode member E2 And is brought into pressure contact with the other surface of the core portion (C).

The second conveying member 26 conveys the rotating member 24 and the folding jig 22 toward the core portion C so that the folding jig 22 reaches the core portion C and the core portion C The folding jig 22 grips the first electrode member E1 and the second electrode member E2 laminated on the core portion C and the core portion C together.

Thereafter, the first electrode laminated unit 40 releases the pressing contact with the first electrode member E1 laminated on one surface of the core portion C, and the second electrode electrode unit releases the pressing contact with the other surface of the core portion C And the second electrode member E2 stacked on the second electrode member E2.

The rotating member 24 then rotates the folding jig 22 in one predetermined direction to rotate the folded jig 22 in the direction opposite to the direction in which the first electrode member (E1) and the second electrode member (E2) in one direction. At the same time, the first dancing roller 10b moves along the predetermined path to supply the separation membrane strip F1 supplied from the first roll 11 temporarily stored to the core portion C, The separator 10d moves along the predetermined path and feeds the separation membrane strip F2 supplied from the second roll 12 temporarily stored toward the core portion C. [

The separation membrane strip F1 fed from the first roll 11 side is pulled toward one side end of the core portion C by the tension acting when the core portion C is reversely rotated, And is folded so as to surround the first electrode member E1. The separation membrane strip F2 supplied from the side of the second roll 12 is pulled toward the other end of the core portion C by the tension acting when the core portion C is reversely rotated, And is folded so as to surround the second electrode member E2.

The first spiral portion H1 connected to one end of the core portion C and the one end of the core portion C and being spirally folded is formed in the region between the first roll 11 and the second roll 12, And a separation membrane or hull (H) having a second spiral portion (H2) connected to the other end portion of the core portion (C) and folded in a spiral shape. The separating membrane or the hull H is constituted by a core portion C or a separation membrane or a hull H which is a minimum unit of the separating membrane or the hull H, H), the number of layers is increased by one layer by the newly taken up membrane strip (F). That is, the first spiral portion H1 and the second spiral portion H2 are formed such that the number of spiral layers increases by one layer each time the core portion C or the separation membrane or the hull H is reversely rotated. The first helical portion H1 and the second helical portion H2 form a double helix structure extending parallel to each other along the same helical direction about the core portion C and at least a portion of the helical portion facing each other.

Thereafter, the first electrode stacking unit 40 stacks the new first electrode member E1 in contact with one surface of the separation membrane or the hull H, that is, the outermost side of the second spiral portion H2, The electrode stacking unit 60 stacks a new second electrode member E2 in contact with the other surface of the separation membrane or the hull H, that is, the outermost side of the first spiral portion H1.

Next, the folding jig 22 releases the previously held core portion C and the first electrode member E1 and the second electrode member E2, and the second conveying member 26 releases the core member C, (24) and the folding jig (22) are moved away from the separation membrane or the hull (H).

When the folding jig 22 is gripped by the core portion C and the first electrode member E1 and the second electrode member E2 as described above, the separation membrane, the hull H, the first electrode member E1, The lamination state of the second electrode member E2 is still maintained by the pressing force applied from the first electrode lamination unit 40 and the second electrode lamination unit 60 and the tension acting on the separation membrane or the hull H.

Thereafter, the rotary member 24 rotates the folding jig 22 in the one direction or the opposite direction opposite to the one direction so as to bring the folding jig 22 into a circular state.

This is because any one of the pair of legs of the grip 22a provided on the folding jig 22 always contacts only the first electrode member E1 and the other one always contacts the second electrode member E2 So as to prevent particles of any kind of electrode member, which are put on the legs of the forceps 22a, from coming into contact with other kinds of electrode members.

The second conveying member 26 conveys the rotary member 24 and the folding jig 22 toward the separation membrane or the hull H so that the folding jig 22 reaches the separation membrane or the hull H, The folding jig 22 that has reached the separation membrane or the hull H comprises a separation membrane or a hull H folded to surround the previously stacked first electrode member E1 and the second electrode member E2, The first electrode member E1 and the second electrode member E2 that are newly stacked on the helical body H are held together.

Thereafter, the rotary member 24 rotates the folding jig 22 in one direction to rotate the first electrode member E1 and the second electrode member E1, which are newly stacked on the separation membrane, the hull H and the separation membrane or the hull H, And the electrode members E2 are reversely rotated together in the one direction. At the same time, the first dancing roller 10b moves along a predetermined path to supply the separation membrane strip F1 supplied from the first roll 11 temporarily stored toward the core portion C, The dancing roller 10d moves along a predetermined path and feeds the separation membrane strip F2 fed from the second roll 12 temporarily stored toward the core portion C. [

The separation membrane strip F1 supplied from the first roll 11 is pulled toward one end of the separation membrane or the hull H by the tension acting when the separation membrane or the hull H is reversely rotated, The second electrode member E2 is folded to surround the newly stacked second electrode member E2. The separation membrane strip F2 supplied from the second roll 12 is pulled toward the other end of the separation membrane or the hull C by the tension acting when the separation membrane or the hull H is reversely rotated, The first electrode member E1 is wound around the separation membrane or the hull H so as to surround the first electrode member E1.

The separator folding unit 20 is formed by stacking the first electrode member E1 and the second electrode member E2 on the outer surface of the separation membrane or the hull H including at least the core portion C, The separation membrane strip F can be wound around the core portion C so as to wrap the first electrode member E1 and the second electrode member E2 with the separation membrane strip F. [ The first electrode members E1 and the second electrode members E2 are disposed between the core portion C and the lowermost layer of the first helical portion H1 closest to the core portion C, Between the lowest layer of the second spiral portion H2 closest to the core portion C and the core portion C and between any one of the layers of the first spiral portion H1 adjacent to each other and the second spiral portion H2 Are alternately interposed. 6, the separator folding unit 20 is configured such that the first electrode member E1 and the second electrode member E2 are alternately interposed between the respective layers of the separation membrane and the hull H, The electrode assembly A can be formed.

On the other hand, the separation membrane or the hull H is formed by winding the separation membrane strip F around the core portion C and the first electrode member E1 and the second electrode member E2 are wound around the separation membrane or the hull H The cross sectional area of the electrode assembly A is different from the cumulative winding length of the separation membrane strip F and the cumulative winding number of the first electrode member E1 and the second electrode member E2 Correspondingly increases stepwise. The separation membrane strip F necessary for wrapping the first electrode member E1 and the second electrode member E2 newly stacked on the separation membrane or the hull H with the separation membrane strip F newly wound on the separation membrane or the hull H, The supply length of the separation membrane F increases stepwise in accordance with the cumulative winding length of the separation membrane strip F and the number of cumulative electrodes of the first electrode member E1 and the second electrode member E2. Therefore, the first roll 11 and the second roll 12 are formed in the same manner as the first and second rollers 11 and 12, respectively, according to the cumulative winding length of the separation membrane strip F and the cumulative number of stacking of the first electrode member E1 and the second electrode member E2. In response to an increase in the cross-sectional area of the assembly A, the feed length of the separator strip F is stepped up.

On the other hand, the total number of laminations of the first electrode member E1 and the second electrode member E2 is not particularly limited and the thickness of the first electrode member E1 and the second electrode member E2, , ≪ / RTI > and the like. The total winding length of the separation membrane strip F required to form the electrode assembly A is determined by the total length of the first electrode member E1 and the second electrode member E2, Is determined corresponding to the total number of stacked second electrode members (E2).

The first spiral portion H1 of the separation membrane or the hull H is connected to one side of the separation membrane strip F wound on the first roll 11 and the second spiral portion H2 of the separation membrane or the hull H Is connected to the other side of the separation membrane strip F wound on the second roll 12. Therefore, after the separation membrane strip F is supplied by the total winding length described above, the first spiral portion H1 and the second spiral portion H2 and the remaining separation membrane strip F How to block the connection between the two.

In order to solve this problem, after the last first electrode member E1 and the second electrode member E2 are laminated on the separation membrane or the hull H, the separation membrane strip F is separated from the separation membrane or the hull H so that the first spiral portion H1 extends relatively longer than the second spiral portion H2 and covers the end portion of the second spiral portion H2, Is wound by a predetermined winding length. That is, the last first electrode member E1 and the second electrode member E2 are laminated on the separator and the hull H in the second roll 12, and the separator folding unit 20 separates the separator, the hull H, When the first electrode member E1 and the second electrode member E2 are grasped together and then rotated in the reverse direction, the first spiral portion H1 covers the end of the second spiral portion H2, Is wound by a predetermined winding length.

The other end of the separation membrane strip F is wound around the core portion C on the separation membrane or the hull H so that the winding jig 12a of the second roll 12 is wound around the core portion C, Releasing the other end of the membrane strip F at a predetermined time to form the end. The other end of the separation membrane strip F which has been released from the winding jig 12a and is in the free end state is naturally wound around the core portion C on the separation membrane or the hull H so as to be wound around the second spiral portion H2, As shown in FIG.

6, the first roll 11 is formed so that the first spiral portion H1 is relatively in contact with the second roll 12 relative to the second roll 12 so as to completely cover the end portion of the second spiral portion H2 A long strip of separator F is wound. On the other hand, the end portion of the first spiral portion H1 connected to the remaining separation membrane strip F1, which is not wound around the separation membrane or the hull H, can be cut by using the cutting unit 70 to be described later.

The separation membrane folding unit 20 is constructed by winding the separation membrane strip F supplied to the core section C from both directions around the core section C to the separation membrane or the hull H, And a double-spiral structure separation membrane or a hull (H) spirally folded around the core portion (C) can be formed. Each time the first electrode member E1 and the second electrode member E2 are stacked on both sides of the separation membrane or the hull H described above, the separation membrane folding unit 20 is newly formed The first electrode member E1 and the second electrode member E2 may be wrapped around the newly wound separator strip F by winding.

The use of such a membrane folding unit 20 allows the winding and folding operation of the separator strip F and the stacking operation of the electrode members E1 and E2 to be carried out together at a position corresponding to the predetermined core portion C have. That is, the winding and folding operation of the separation membrane strip F at the fixed position corresponding to the core portion C can be performed together. Therefore, the electrode assembly manufacturing apparatus 1 can be manufactured in a conventional stack / folding type electrode assembly in which the separator strips, in which pull cells or bi-cells are arranged at predetermined intervals, must be sequentially rolled from one end to the other end of the separator strip The time required for manufacturing the electrode assembly A can be reduced and the manufacturing process of the electrode assembly A can be easily automated and the quality deterioration of the secondary battery due to work errors or carelessness can be effectively prevented have. Since the electrode assembly manufacturing apparatus 1 can simultaneously manufacture the electrode assembly A by winding the separation membrane strip F supplied from both directions around the core portion C, The time required for manufacturing can be further reduced.

FIG. 7 is a plan view of a first electrode member according to an embodiment, FIG. 8 is a plan view of a second electrode member according to an embodiment, and FIG. 9 is a cross- FIGS. 10 to 12 are views for explaining a method of stacking the electrode members shown in FIGS. 7 and 8. FIG.

13 is a plan view of a first electrode member according to another aspect, FIG. 14 is a plan view of a second electrode member according to another aspect, and FIG. 15 is a plan view of a second electrode member manufactured by using the electrode members shown in FIG. 13 and FIG. FIG. 2 is a perspective view of an electrode assembly according to an aspect of the present invention.

The kind of the electrode member usable as the first electrode member E1 and the second electrode member E2 is not particularly limited. For example, as shown in FIGS. 7 and 8, the first electrode member E1 is an anode that is a unit having a predetermined area, and the second electrode member E2 is a cathode electrode that is a unit having a predetermined area. . 7 and 8, the positive electrode tab E4 is provided at one end E3 of the first electrode member E1 and the positive electrode tab E4 is provided at one end E5 of the second electrode member E2. And a negative electrode tab E6 is provided.

When the electrode assembly A is manufactured by using the electrode assembly manufacturing apparatus 1 with the electrode taps E4 and E6 provided therebetween, the first electrode stacking unit 40 is formed such that the positive electrode tab E4 is separated from the separator, The first electrode member E1 is laminated on one surface of the separator or the hull H so as to protrude outward through the gap between the layers of the first electrode stacking unit H and the second electrode stacking unit 60, The second electrode member E2 must be laminated on the other surface of the separation membrane or the hull H so that the second electrode member E2 protrudes outward through a gap between the respective layers of the separation membrane and the hull H,

7 and 8, the positive electrode tab E4 may be provided at a predetermined distance from the center of one end E3 of the first electrode member E1, The second electrode member E6 may be provided at a position spaced apart from the center of the one end portion E5 of the second electrode member E2 by a predetermined gap.

When the electrode assembly A is manufactured using the electrode members E1 and E2, as shown in FIG. 9, the electrode members E1 and E2 are formed such that the electrode tabs E4 and E6 are connected to the electrode assembly A and the electrode taps E4 and E6 having the same polarity are aligned in a line. That is, the first electrode members E1 are laminated so that the positive electrode tabs E4 are aligned in a line, and the second electrode members E2 are laminated so that the negative electrode tabs E6 are aligned in a line. By aligning the electrode members E1 and E2 as described above, the electrode taps E4 and E6 having mutually different polarities can be easily electrically connected.

10 and 11, each time the electrode members E1 and E2 are laminated on the separator or the hull H, the electrode assembly manufacturing apparatus 1 is configured such that, The shell member H and the electrode members E1 and E2 are reversed around the core portion C so that the shells E1 and E2 can be wrapped with the separator film F wound on the shell H, . The position of the electrode taps E4 and E6 is reversed with respect to the center of one end portion E3 and E5 of the electrode members E1 and E2 when the electrode members E1 and E2 are reversely rotated . Therefore, when the electrode members E1 and E2 are simply laminated without considering the positional reversal of the electrode tabs E4 and E6, the positive electrode tabs E4 and the negative electrode tabs E6 are not aligned in a row, There is a risk of alignment.

In order to solve this problem, the electrode assembly manufacturing apparatus 1 is configured such that the positions of the electrode taps E4 and E6 are alternately changed each time the lamination members E1 and E2 are laminated, .

For example, as shown in Figs. 10 and 12, the electrode assembly manufacturing apparatus 1 has a structure in which the positive electrode tab E4 is provided on either side of the center portion of one end portion E3 of the first electrode member E1 A first electrode member E1 arranged to be eccentric with respect to the first electrode member E1 and a second electrode member E2 disposed so as to be eccentrically eccentrically disposed on the other side opposite to the first electrode member E1 with respect to a center portion of one end portion E3 of the first electrode member E1 The first electrode member E1 can be alternately stacked on the separation membrane or the hull H.

For example, as shown in Figs. 10 and 12, the electrode assembly manufacturing apparatus 1 may be configured such that the negative electrode tab E6 is formed on the other side of the center portion of one end portion E5 of the second electrode member E2, A second electrode member E2 disposed eccentrically to one side of the first electrode member E2 and a second electrode member E2 disposed eccentrically to the other side of the second electrode member E2, The member E2 can be alternately stacked on the jetting membrane or the hull H.

At this time, in order to align the electrode taps E4 and E6 having the same polarity with each other in a line, the electrode assembly manufacturing apparatus 1 is provided with the positive electrode tabs E4 and the negative electrode taps E6 may be stacked such that the eccentric directions of the electrodes E1, E2 are opposite to each other. As a result, the positive electrode tabs E4 can be aligned in one line at one end of the electrode assembly A, and the negative electrode tabs E6 can be aligned in one line at one end of the electrode assembly A, .

The electrode tabs E4 and E6 are spaced apart from the center of one of the end portions E3 and E5 of the electrode members E1 and E2 by predetermined intervals. However, the present invention is not limited thereto. 13 and 14, the electrode taps E4 'and E6' may be formed at the center portions of one ends E3 'and E5' of the electrode members E1 'and E2' . The position of the electrode tabs E4 'and E6' is kept constant even if the electrode members E1 'and E2' are reversed, so that the problem of positional reversal of the electrode tabs E4 'and E6' You do not have to. When manufacturing the electrode assembly A 'using these electrode members E1' and E2 ', as shown in FIG. 15, the electrode members E1' and E2 'are connected to the positive electrode tab E4' And the negative electrode tab E6 'are laminated so as to protrude outward through a gap between the respective layers of the separator and the hull H and to be positioned at opposite ends of the electrode assembly A'. Thereby, the positive electrode taps E4 'can be aligned in line with one end of the electrode assembly A' and the negative electrode taps E6 'can be aligned in line with the other end of the electrode assembly A' .

FIG. 16 is a plan view of the electrode assembly manufacturing apparatus shown in FIG. 1, and FIG. 17 is a plan view of the first electrode supply unit and the first electrode stacking unit shown in FIG.

18 is a front view of the first electrode supply unit and the first electrode laminate unit shown in Fig. 17, and Fig. 19 is a cross-sectional view of the first electrode laminate unit and the second electrode laminate unit shown in Fig. And Fig.

As described above, the first electrode laminated unit 40 is formed by laminating the first electrode member E1 supplied from the first electrode supply unit 30 on one surface of the separation membrane or the hull H, (60) stacks the second electrode member (E2) supplied from the second electrode supply unit (50) on the other surface of the separation membrane or the hull (H). 16, the first electrode supply unit 30 and the first electrode stack unit 40 are connected to one side of the electrode assembly manufacturing apparatus 1 so as to correspond to one surface of the separation membrane or the hull H, And the second electrode supply unit 50 and the second electrode stacking unit 60 are provided on the other side of the electrode assembly manufacturing apparatus 1 so as to correspond to the other surfaces of the separation membrane and the hull H, The second electrode supply unit 50 and the second electrode stack unit 60 are connected to the first electrode supply unit 30 and the first electrode stack unit 40 via the separation membrane and the hull H, Except that the first electrode supply unit 30 and the first electrode stacking unit 30 are symmetrically installed and that the second electrode member E2 is a device for stacking the second electrode member E2 on the other surface of the separation membrane or the hull H, Unit 40 shown in Fig.

For convenience of explanation, the electrode supplying units 30 and 50 and the electrode stacking units 40 and 60 will be described below, taking the case of manufacturing the electrode assembly A as an example. The description of the electrode supply units 30 and 50 and the electrode stack units 40 and 60 is omitted except for the difference between the electrode assembly A and the electrode assembly A ' (A '), it is of course possible to apply the invention in common.

First, the first electrode supply unit 30 is a device for supplying a first electrode member E1 to be laminated on one surface of a separation membrane or the hull H,

16, the first electrode supply unit 30 is provided so as to be spaced from the one surface of the separation membrane or the hull H by a predetermined gap. 16, the first electrode supply unit 30 includes first mounting trays 32a and 32b on which the first electrode member E1 is mounted, first and second mounting members 32a and 32b on which the first electrode member E1 is mounted, A first electrode feeder 34 for feeding the first electrode stacking unit 40 from the stacking trays 32a and 32b and a first electrode member E1 supplied from the first electrode feeder 34 are arranged in a predetermined arrangement manner And a first electrode aligner 36 for aligning the first electrode stack unit 40 and the first electrode stack unit 40.

The first electrode supply unit 30 supplies the first electrode member E1 supplied from the first electrode supplier 34 to the first electrode stack unit 40 via the first electrode aligner 36 However, the present invention is not limited thereto. That is, the first electrode aligner 36 may be omitted so that the first electrode feeder 34 can directly supply the first electrode member E1 to the first electrode stack unit 40. [ Hereinafter, the first electrode supply unit 30 will be described as an example where the first electrode aligner 36 is provided.

As shown in FIG. 17, the first stacking trays 32a and 32b are each provided with a pair of first electrode members E1, each of which is composed of a unitary anode, to be stacked. The material of the positive electrode usable as the first electrode member E1 is not particularly limited, and the first electrode member E1 may be made of the same material as the positive electrode generally used for manufacturing the electrode assembly.

The first stacking trays 32a and 32b are installed such that a first electrode aligner 36 is positioned between the first stacking trays 32a and 32b and the separator or the hull H, 34b of the first electrode feeder 34 so as to correspond to the rotation paths of the first supply arms 34a, 34b of the first electrode feeder 34. The first stacking trays 32a and 32b preferably include a virtual line (not shown) connecting the rotational axis 34c of the first electrode feeder 34 and the central portion of one surface of the separation membrane or the hull H, (Not shown) connecting the center portions of the stacking trays 32a and 32b are arranged perpendicular to each other.

17, the first electrode member E1 is loaded on one of the first stacking trays 32a and 32b so that the positive electrode tab E4 faces the separation membrane or the hull H, The first electrode member E1 is stacked on the first stacking trays 32a and 32b of the first stacking tray 32a and 32b. That is, the first electrode members E1 are stacked on the first stacking trays 32a and 32b so as to be symmetrical to each other. 17, the first stacking trays 32a and 32b are arranged such that the positive electrode tab E4 is eccentric with respect to the center of one end E3 of the first electrode member E1, The first electrode member E1 and the positive electrode tab E4 arranged so as to be eccentrically eccentric to one another with respect to the center of one end E3 of the first electrode member E1 They can be supplied alternately. Through this, the first electrode member E1 can be laminated on the separator or the hull H so that the cathode taps E4 are aligned in a line.

17, the first electrode feeder 34 is connected to one end of the first electrode feeder 34 so as to form a predetermined angle, and is rotated around a rotation axis 34c provided at the one end of the first electrode feeder 34, And a pair of first supply arms 34a and 34b that can grasp or disengage the first electrode member E1 loaded on the first and second electrode members 32a and 32b. 17, the first electrode feeder 34 includes a first electrode stacking unit 40 and a first alignment plate 36a to be described later, around the rotation axis 36j of the first alignment plate 36a, For example, 180 [deg.], Of the rotational angle interval of the rotor.

The first supply arms 34a and 34b can be rotated about the rotation axis 34c by being axially coupled to the drive motor (not shown). The first supply arms 34a and 34b are disposed between the rotation shaft 34c and the first stacking trays 32a and 32b so as to face the first stacking trays 32a and 32b when the first supply arms 34a and 34b are rotated along the rotation shaft 34c. And has a mounting height relatively higher than the installation height of the first stacking trays 32a and 32b.

The first supply arms 34a and 34b are arranged such that any one of the first supply arms 34a and 34b corresponds to any one of the first stacking trays 32a and 32b The first supply arms 34a and 34b are arranged at predetermined angles to face the first alignment member 36b of the first electrode aligner 36 to be described later. For example, as shown in FIG. 17, the first supply arms 34a and 34b may be perpendicular to each other.

Each of the first supply arms 34a and 34b is connected to a first vacuum adsorption pad 34d capable of vacuum adsorbing or desorbing the first electrode member El to grasp or grasp the first electrode member El, Lt; / RTI > The number of the first vacuum adsorption pads 34d is not particularly limited and the first supply arms 34a and 34b may be formed of at least one material such that they can stably grip or release the first electrode member E1, 1 vacuum adsorption pad 34d.

17, when the first alignment plate 36a of the first electrode aligner 36, which will be described later, is rotated by a predetermined angle and then stopped, the first electrode supplier 34, The first vacuum adsorption pad 34d of the first supply arms 34a and 34b of the first supply arm 34a grips the first electrode member E1 from any one of the first stacking trays 32a and 32b, The first vacuum adsorption pad 34d of the supply arms 34a and 34b grasps the first electrode member E1 previously gripped from the other one of the first stacking trays 32a and 32b, (36b) of the first alignment member (36). The first electrode feeder 34 driven in this manner is arranged such that the positive electrode tab E4 is eccentrically eccentrically disposed at one side of the center portion of one end E3 of the first electrode member E1 The first electrode member E1 and the positive electrode tab E4 are disposed eccentrically on the other side with respect to the center of one end E3 of the first electrode member E1, Can be alternately supplied to the electrode aligner (36).

The first electrode aligner 36 is disposed between the first electrode feeder 34 and the separation membrane or the hull H as shown in Fig. 17, the first electrode aligner 36 is rotated by a predetermined rotation angle interval about the rotation axis 36j and then is rotated to repeat the first predetermined time period 36a of the first alignment plate 36a and the first alignment plate 36a are spaced from each other by the rotation angle interval about the rotation axis 36j of the first alignment plate 36a, And may have a plurality of first alignment members 36b arranged in a batch.

The first alignment plate 36a is rotated such that the rotation axis 36j is axially coupled to a drive motor (not shown), rotated about the rotation axis 36j by the rotation angle interval, and then stopped for a predetermined time As shown in Fig. The rotation angle interval is not particularly limited. For example, the first alignment plate 36a may be rotated so as to repeat the rotation after being rotated by 90 [deg.].

The first alignment members 36b are radially installed in the first alignment plate 36a such that the first alignment members 36b are spaced apart from each other by the same angular interval as the rotation angle interval of the first alignment plate 36a. For example, when the rotational angle interval of the first aligning plate 36a is 90 °, the four first aligning members 36b are arranged radially so as to be mutually spaced by 90 ° to the first aligning plate 36a . Further, as shown in Fig. 18, when the first alignment plate 36a is rotated after being rotated by the rotation angle interval and then stopped, any one of the first alignment members 36b The first alignment member 36b faces one of the first vacuum adsorption pads 34d of the first supply arms 34a and 34b while the other one of the first electrode stacking units 40 And may be disposed at a predetermined position of the first alignment plate 36a so as to face the first electrode stacking unit 44. [ 17, the angular interval between any one of the first alignment members 36b and the other first alignment member 36b is set such that the angle between the first electrode feeder 34 and the first electrode 36b, Which is the same as the interval between the lamination units 40, that is, 180 DEG.

The first alignment members 36b include a pair of first alignment bars 36c that are provided so as to be reciprocatable in the width direction of the first electrode member E1 and a pair of second alignment bars 36c which are arranged in the longitudinal direction of the first electrode member El A pair of second alignment bars 36d which are installed so as to be capable of reciprocating movement, a cylinder 36e which reciprocally feeds one alignment bar of the first alignment bars 36c and the second alignment bars 36d, 36e interconnecting the first alignment bars 36c and the second alignment bars 36d so that the other alignment bars are also reciprocated when the alignment bars are reciprocally transported by the first alignment bars 36a, 36e. The connection link 36f includes a link core 36g which is rotated clockwise or counterclockwise around the rotation axis 36h and one end of which is hingedly coupled to the link core 36g so as to be eccentric from the rotation axis 36h And a plurality of link bars 36i whose other ends are hinged to any one of the alignment bars corresponding to the alignment bars.

As the first alignment members 36b are provided as described above, when the cylinder 36e is moved to move the alignment bar away from the link core 36g, the remaining alignment bars are also conveyed away from the link core 36g, When the cylinder 36e transfers one of the alignment bars so as to be close to the link core 36g, the other alignment bars are also conveyed to be close to the link core 36g. Thus, the first alignment members 36b are arranged so that the alignment bars are separated from the first vacuum adsorption pad 34d of the first supply arms 34a, 34b with the alignment bars being spaced apart from each other, as shown in Fig. When the first electrode member E1 is placed in the region between the alignment bars, the alignment bars are driven to contact the first electrode member E1, thereby aligning the first electrode member E1 in a predetermined arrangement.

On the other hand, the first electrode members E1 stacked on the first stacking trays 32a and 32b may adhere to each other due to static electricity or other causes. Thus, there is a possibility that the performance of the secondary battery may be adversely affected by the fact that two or more first electrode members E1 are stacked together on one side of the separation membrane or the hull H together with the first electrode members E1 being stuck together. 17 and 18, the first electrode supply unit 30 includes a first electrode feeder 34 and a second electrode feeder 34 with the rotation axis 36j of the first alignment plate 36a as a center, The first electrode stacking unit 40 is provided between the first electrode feeder 34 and the first electrode stacking unit 40 such that the first electrode stacking unit 40 and the first aligning plate 36a are spaced apart from each other by an integral multiple of the rotation angle interval, The first electrode sensor 38 may detect whether or not two or more first electrode members E1 are seated on the member 36b. 17, when the first electrode feeder 34 and the first electrode stacking unit 40 are spaced 180 degrees about the rotation axis 36j of the first alignment plate 36a, The sensor 38 may be installed between the first electrode feeder 34 and the first electrode stack unit 40 so as to be separated from the first electrode feeder 34 and the first electrode stack unit 40 by 90 degrees. The structure of the first electrode sensor 38 is not particularly limited, and the first electrode sensor 38 may be a conventional two-piece detection sensor.

The first electrode stack unit 40 is a member for stacking the first electrode member E1 supplied from the first electrode supply unit 30 on one surface of the separation membrane or the hull H,

17, the first electrode stacking unit 40 is configured to rotate the first alignment plate 36a around the rotation axis 36j of the first electrode feeder 34 and the first alignment plate 36a, For example, by an integral multiple of the angular interval, for example, 180 degrees. As shown in FIG. 18, the first electrode stacking unit 40 includes a first lamination plate (not shown) driven to repeatedly rotate about a rotation axis 42a by a predetermined rotation angle interval, The first laminating plate 42 and the first laminating plate 42 are radially installed so as to be spaced apart from each other by an angular interval equal to the rotational angle interval of the first laminating plate 42 about the rotational axis 42a of the first laminating plate 42 And a plurality of first electrode stackers 44 capable of stacking a first electrode member E1 seated on the first alignment member 36b on one side of the separation membrane or the hull H,

The first lamination plate 42 is driven so as to repeat the rotation for a predetermined time after the rotation shaft 42a is rotated by the rotation angle interval around the rotation axis 42a by being axially coupled to a driving motor (not shown) Lt; / RTI > structure. 18, the first lamination plate 42 is provided in advance from the first electrode aligner 36 so that the first electrode laminate 44 and the first electrode aligner 36 do not interfere with each other, And are spaced apart from each other by a predetermined distance.

The rotation angle interval of the first lamination plate 42 is not particularly limited, and for example, the first lamination plate 42 may be driven so as to repeat the rotation after being rotated by 90 degrees. The first lamination plate 42 preferably has the same driving period as the first alignment plate 36a of the first electrode aligner 36 described above. That is, the first lamination plate 42 is driven to rotate and stop simultaneously with the first alignment plate 36a.

The first electrode stacking machine 44 is radially installed in the first lamination plate 42 so as to be spaced apart from each other by the same angular interval as the rotation angle interval of the first lamination plate 42. For example, when the rotational angle interval of the first lamination plate 42 is 90 °, the four first electrode stackers 44 may be arranged to be mutually spaced by 90 °. 18 and 19, when the first lamination plate 42 is rotated after being rotated by a rotation angle interval and then stopped, any one of the first electrode stacking layers 42, The first electrode stacking unit 44 faces the first electrode member E1 that is seated on one of the first alignment members 36b and the other electrode stacking unit 44 contacts the one surface of the separation membrane or the hull H, It can be disposed at a predetermined position of the first lamination plate 42 so as to face each other.

18, the first electrode stacking unit 44 includes a second vacuum adsorption pad 44a capable of vacuum-adsorbing or desorbing the first electrode member E1 seated on the first alignment member 36b, And a third transfer member 44b which can be reciprocated so that the second vacuum adsorption pad 44a is brought close to the rotation axis 42a of the first lamination plate 42 or away from the rotation axis 42a of the first lamination plate 42, ).

The second vacuum adsorption pad 44a is installed on the end of the guide member 44d of the third conveyance member 44b to be described later so as to face the first alignment member 36b or one surface of the separation membrane or the hull H, do. The number of the second vacuum adsorption pads 44a to be installed is not particularly limited and the first electrode stacking unit 44 may include at least one second vacuum adsorption unit 44 for stably grasping or grasping the first electrode member E1, And may have a pad 44a.

18, the cylinder rod 44e is brought close to the rotary shaft 42a of the first lamination plate 42 or the rotary shaft 42a of the first lamination plate 42 is brought into contact with the third feeding member 44b, And a guide member 44d which is engaged with the cylinder rod 44e so as to be reciprocally transported together with the cylinder rod 44e. A second vacuum adsorption pad 44a is fixed to the end of the guide member 44d. The third transfer member 44b is moved so that the second vacuum adsorption pad 44a approaches the rotation axis 42a of the first lamination plate 42 or away from the rotation axis 42a of the first lamination plate 42, Can be transported round-trip. The third conveying member 44b may be provided with any one of various driving members that can translate in place of the cylinder 44c.

18 and 19, when the first aligning plate 36a and the first laminating plate 42 are rotated by a predetermined rotation angle and then stopped at the same time The second vacuum adsorption pad 44a of any one of the first electrode stackers 44 is transferred to the first alignment member 36b facing the first electrode stacker 44 and then grips the first electrode member E1, The second vacuum adsorption pad 44a of the first electrode stacking unit 44 is transported toward one surface of the separation membrane or the hull H facing the first electrode stacker 44 and then the first electrode member E1, Is brought into pressure contact with one surface of the substrate (H).

The first electrode stacking unit 40 is configured such that the first electrode stacking unit 44 of the other electrode stacking unit 44 is folded in a state in which the first electrode member E1 is pressed against one surface of the separation membrane or the hull H, When the jig 22 grasps the first electrode member E1 which is pressed against the separation membrane or the hull H by the separation membrane or the hull H and the other first electrode stacking unit 44, The second vacuum adsorption pad 44a of one first electrode stacking unit 44 is driven to adsorb and release the first electrode member El. The first electrode member E1 sucked and released from the second vacuum adsorption pad 44a in the state of being held by the folding jig 22 is held in the separation membrane or the hull H when the folding jig 22 is reversely rotated And is interposed between the respective layers of the separation membrane and the hull (H) by being wrapped by the separator strip F which is newly wound.

The second electrode supply unit 50 and the second electrode stacking unit 60 are connected to the first electrode supply unit 50 so that the second electrode unit E2 composed of a negative electrode of a unit can be supplied to the other surface of the separation membrane or the hull H, Except that the first electrode supply unit 30 and the first electrode stack unit 40 are provided symmetrically with respect to the first electrode stack unit 40 and the separation membrane and the hull H, (40). Therefore, the second electrode supply unit 50 and the second electrode stack unit 60 will be briefly described.

First, the second electrode supply unit 50 is a device for supplying a second electrode member E2 to be laminated on the other surface of the separation membrane or the hull H.

16, the second electrode supply unit 50 includes a pair of second stacking trays 52a and 52b, in which second electrode members E2 composed of cathodes of a unit are symmetrically stacked, A second electrode feeder 54 for feeding the second electrode member E2 from the second stacking trays 52a and 52b to the second electrode stacking unit 50, A second electrode aligner 56 for aligning the second electrode member E2 in a predetermined arrangement pattern and transferring the second electrode member E2 to the second electrode stack unit 60, And a second electrode detector (58) capable of detecting whether the two electrodes are supplied together in a state of being attached. The material of the negative electrode usable as the second electrode member E2 is not particularly limited, and the second electrode member E2 may be made of the same material as the negative electrode generally used for manufacturing the electrode assembly.

16, the second electrode member E2 is loaded on one of the second stacking trays 52a and 52b such that the negative electrode tab E6 faces the separation membrane or the hull H, The second electrode member E2 is loaded on the second stacking trays 52a and 52b of the first electrode unit E2 so that the negative electrode tab E6 faces the opposite side of the separator and the hull H, That is, the second electrode members E2 are mounted on the second stacking trays 52a and 52b, respectively, so as to be symmetrical. The second electrode traces 52a and 52b are arranged such that the negative electrode tab E6 is disposed eccentrically with respect to the center of one end portion E5 of the second electrode member E2 E2 and the negative electrode tab E6 can be alternately supplied with the second electrode member E2 disposed so as to be eccentric to the other side with respect to the central portion of the one end portion E5 of the second electrode member E2. Thus, the second electrode member E2 can be laminated on the separator or the hull H so that the negative electrode tabs E6 are aligned in a line.

16, the second electrode feeder 54 is connected to one end of the second electrode feeder 54 at a predetermined angle so that the second electrode feeder 54 is rotated about a rotation axis 54c provided at one end of the second electrode feeder 54, And a pair of second supply arms 54a, 54b that can grasp or disengage the second electrode member E2 loaded on the second electrode member 52b. Each of the second supply arms 54a and 54b is provided with at least one third vacuum adsorption pad 54a capable of vacuum-adsorbing or desorbing the second electrode member E2 to grasp or release the second electrode member E2, (54d).

16, when the second alignment plate 56a of the second electrode aligner 56, which will be described later, is rotated by a predetermined angle and then stopped, The third vacuum adsorption pad 54d of the second supply arms 54a and 54b of the first and second supply arms 54a and 54b grips the second electrode member E2 from any one of the second stacking trays 52a and 52b, The supply arms 54a and 54b release the second electrode member E2 previously gripped from the other one of the second stacking trays 52a and 52b to disengage any one of the second And is driven to be seated on the alignment member 56b. The second electrode feeder 54 driven in this manner is constituted by the second electrode member E2 arranged such that the negative electrode tab E6 is eccentrically disposed with respect to the center of one end portion E5 of the second electrode member E2, And the negative electrode tab E6 are eccentrically eccentric with respect to the center of one end E5 of the second electrode member E2 to the second electrode aligner 56 alternately It is possible to supply it.

The second electrode aligner 56 is disposed between the second electrode feeder 54 and the separation membrane or the hull H as shown in Fig. 16, the second electrode aligner 56 includes a second alignment plate (not shown) driven to repeat the rotation for a predetermined time after being rotated by a predetermined rotation angle interval around the rotation axis 56j 56a arranged radially to the second alignment plate 56a so as to be mutually spaced apart from each other by the rotation angle interval about the rotation axis 56j and to align the second electrode members E2 in a predetermined arrangement form, 2 alignment members 56b.

The second alignment plate 56a is driven to rotate repeatedly about a predetermined time after the rotation axis 56j is rotated by the rotation angle interval around the rotation axis 56j by being axially coupled to a driving motor (not shown) As shown in Fig. The rotation angle interval is not particularly limited, and for example, the second alignment plate 56a may be rotated so as to repeat the rotation after being rotated by 90 degrees.

The second alignment members 56b are radially installed on the second alignment plate 56a such that the second alignment members 56b are spaced apart from each other by the same angular interval as the rotation angle interval of the second alignment plate 56a. For example, as shown in FIG. 16, when the rotation angle interval of the second alignment plate 56a is 90 °, four second alignment members 56b are provided on the second alignment plate 56a RTI ID = 0.0 > g. ≪ / RTI >

The second electrode sensor 58 is disposed between the second electrode feeder 54 and the second electrode stacking unit 60 and the second alignment plate 56a around the rotation axis 56j of the second alignment plate 56a The second electrode member E2 is disposed between the second electrode feeder 54 and the second electrode laminate unit 60 so that the second electrode member E2 is spaced apart from the second alignment member 56b by an integral multiple of the rotation angle interval, Or a two-piece detection sensor capable of detecting whether or not it has been detected. 16, when the second electrode feeder 54 and the second electrode laminate unit 60 are spaced apart from each other by 180 degrees about the rotation axis 56j of the second alignment plate 56a, The sensor 58 may be installed between the second electrode feeder 54 and the second electrode stacking unit 60 so as to be separated from the second electrode feeder 54 and the second electrode stacking unit 60 by 90 degrees.

The second electrode stacking unit 60 is a member for stacking the second electrode member E2 supplied from the second electrode supply unit 50 on the other surface of the separation membrane and the hull H,

16, the second electrode stacking unit 60 rotates the second alignment plate 56a around the rotation axis 56j of the second electrode feeder 54 and the second alignment plate 56a For example, by an integral multiple of the angular interval, for example, 180 degrees. As shown in FIG. 19, the second electrode lamination unit 60 includes a second lamination plate 60, which is rotated to rotate about the rotation axis 62a by a predetermined rotation angle interval and then repeatedly stops for a predetermined time, (62) and a second laminating plate (62) are radially installed so as to be spaced apart from each other by an angular interval equal to the rotational angle interval of the second laminating plate (62) about the rotational axis (62a) of the second laminating plate And a plurality of second electrode stackers 64 capable of stacking the second electrode member E2 seated on the second aligning member 56b on the other surface of the separator or the hull H,

The second lamination plate 62 is driven so as to repeat the rotation for a predetermined time after the rotation shaft 62a is axially coupled to a driving motor (not shown) Lt; / RTI > structure. The rotation angle interval of the second lamination plate 62 is not particularly limited, and for example, the second lamination plate 62 may be rotated so as to be repeatedly rotated after being rotated by 90 degrees. It is preferable that the second lamination plate 62 has the same driving period as the second alignment plate 56a of the second electrode aligner 56 described above. That is, the second lamination plate 62 is driven to rotate and stop simultaneously with the second alignment plate 56a.

The second electrode stacking unit 64 is radially installed in the second stacking plate 62 so as to be spaced apart from each other by the same angular interval as the rotational angle intervals of the second stacking plates 62. For example, when the rotational angle interval of the second lamination plate 62 is 90 °, the four second electrode stackers 64 may be arranged to be mutually spaced by 90 °.

19, the second electrode stacking unit 64 includes at least one fourth vacuum adsorption pad 65 capable of vacuum-adsorbing or desorbing the second electrode member E2 seated on the second alignment member 56b, The fourth vacuum adsorption pad 64a and the fourth vacuum adsorption pad 64a can be reciprocated so as to be close to the rotation axis 62a of the second lamination plate 62 or away from the rotation axis 62a of the second lamination plate 62, Member 64b.

19, the cylinder rod 64e is brought close to the rotation axis 62a of the second lamination plate 62 or the rotation axis 62a of the second lamination plate 62, And a guide member 64d which is engaged with the cylinder rod 64e so as to be reciprocally transported together with the cylinder rod 64e. A fourth vacuum adsorption pad 64a is fixed to the end of the guide member 64d. The fourth transfer member 64b is moved so that the fourth vacuum adsorption pad 64a approaches the rotation axis 62a of the second lamination plate 62 or away from the rotation axis 62a of the second lamination plate 62, Can be transported round-trip. Meanwhile, the fourth transfer member 64b may include any one of various driving members that can translate in place of the cylinder 64c described above.

As shown in Figs. 16 and 19, the second electrode stacking unit 60 is rotated at the same time after the second aligning plate 56a and the second stacking plate 62 are rotated by predetermined rotational angles, respectively The fourth vacuum adsorption pad 64a of one of the second electrode stacking units 64 is transferred to the second alignment member 56b facing the second vacuum accumulation pad 64a and then grips the second electrode member E2, The fourth vacuum adsorption pad 64a of the other second electrode stacking unit 64 is transferred to the other surface of the separation membrane or the hull H facing the second electrode assembly and then the second electrode member E2 pre- And is driven to come into pressure contact with the other surface of the hull (H).

The second electrode stacking unit 60 is configured such that the second electrode stacking unit 64 stacks the second electrode member E2 in contact with the other surface of the separation membrane or the hull H, When the jig 22 grasps the second electrode member E2 which is in pressure contact with the separation membrane or the hull H by the separation membrane or the hull H and the other second electrode stacking unit 64, The fourth vacuum adsorption pad 64a of one second electrode stacking unit 64 is driven to adsorb and release the second electrode member E2. The second electrode member E2 sucked and released from the fourth vacuum adsorption pad 64a in the state of being held by the folding jig 22 is held in the separation membrane or the hull H when the folding jig 22 is reversely rotated And is interposed between the respective layers of the separation membrane and the hull (H) by being wrapped by the separator strip F which is newly wound.

When the electrode supply units 30 and 50 and the electrode stack units 40 and 60 are used as described above, the first electrode member E1 composed of an anode and the second electrode member E2 composed of a cathode are respectively connected to a positive electrode tab E4 and the negative electrode tab E6 are reversed alternately. The electrode assembly manufacturing apparatus 1 then uses the separator folding unit 20 described above to stack the separator and the hull H and the separator or the hull H each time new electrode members E1 and E2 are stacked, The positive electrode taps E4 and the negative electrode taps E6 are arranged such that the electrode tabs E4 and E6 align the electrode assemblies A aligned in a line between the negative electrode tabs E6 It is possible to further reduce the manufacturing time of the electrode assembly (A).

On the other hand, a first electrode member E1 composed of a unitary anode and a second electrode member E2 composed of a unitary cathode are stacked on the separator or the hull H by using the electrode assembly manufacturing apparatus 1, A). However, the present invention is not limited thereto. For example, the first electrode member E1 is a first unit cell (not shown) in which an anode, a separator, and a cathode are stacked so that any one of an anode and a cathode is stacked on both outermost layers, The member E2 may be a second unit cell (not shown) in which an anode, a separator, and a cathode are stacked so that one of the anode and the cathode is stacked on both outermost layers. Here, the separation membrane is a unit body formed by cutting a separation membrane strip so as to have an area corresponding to an anode and a cathode. Such a separation membrane is preferably, but not limited to, the same material as the separation membrane strip F described above.

FIG. 20 is a perspective view of an electrode assembly in which the separation of the separator strip and the stacking of the electrode members is completed by the electrode assembly manufacturing apparatus shown in FIG. 1, and FIG. 21 is a cross- FIG. 22 is a view for explaining a method of cutting a connection point between a separation membrane or a hull and a separation membrane strip using the cutting unit shown in FIG. 21. FIG.

Fig. 23 is a perspective view of an electrode assembly separated from the separator strip by the cutting unit shown in Fig. 21, Fig. 24 is a view showing a driving aspect of the assembly transfer unit shown in Fig. 21, And the separation membrane spiral is fixed by the taping unit.

20, the electrode assembly A, in which the separation membrane strip F is wound and the first electrode member E1 and the second electrode member E2 are laminated, is separated from the first roll 11 And the supplied separation membrane strip F1 and the first spiral portion H1 are connected. Therefore, in order to complete the manufacture of the electrode assembly A, it is necessary to cut the end portion of the first spiral portion H1 connected to the separation membrane strip F1 supplied from the first roll 11, An operation of fixing the end portion of the first helical portion H1 is further required.

21, a cutting unit 70 for cutting the separation membrane strip F1 fed from the first roll 11 and a cutting unit 70 for cutting the separation membrane strip F1 supplied from the electrode assembly A), a taping unit (90) for fixing the separation membrane of the electrode assembly (A) or the hull (H) with a tape, and a separating membrane or a hull (H) And a loading unit 100 on which the electrode assembly A is mounted.

First, the cutting unit 70 is a device for cutting the separation membrane strip F 1 fed from the first roll 11.

The cutting unit 70 is provided between the electrode assembly A and the first roll 11. 22, the cutting unit 70 includes a main body 72 provided to be reciprocally movable in the horizontal direction away from the electrode assembly A or close to the electrode assembly A, At least one guide roller 74 for guiding the separation membrane strip F1 supplied from the first roll 11 to the main body 72 and a cutter 76 for cutting the separation membrane strip F1 supplied from the first roll 11 do.

The main body 72 is provided in an area between the electrode assembly A and the first roll 11 as shown in Fig. The main body 72 can be reciprocated horizontally such that it is moved away from the agitator assembly A or closer to the electrode assembly A in association with a driving member (not shown).

The guide rollers 74 are arranged so that the separation membrane strip F1 fed from the first roll 11 passes through the body 72 and the guide rollers 74, Lt; / RTI > 22, when the main body 72 is moved away from the electrode assembly A, it is connected to the separation membrane strip F1 supplied from the first roll 11 and the separation membrane strip F1 The end of the first helical portion H1 is guided toward the main body 72 by the first guide roller 74 and pulled away from the electrode assembly A. [ A predetermined tension is applied to the connection point between the separation membrane strip F1 supplied from the first roll 11 and the end portion of the first spiral portion H1 and at the same time the assembly transfer unit 80, A space for holding the electrode assembly A can be formed between the cutting unit 70 and the electrode assembly A. [

The cutter 76 is arranged so that the main body 72 moves the end of the separator strip F1 and the first spiral portion H1 supplied from the first roll 11 away from the electrode assembly A And is provided on one surface of the main body 72 so as to face the separation membrane strip F1 supplied from the first roll 11. [ The cutter 76 is moved toward the separation membrane strip F1 supplied from the first roll 11 and is connected to the connection point between the separation membrane strip F1 supplied from the first roll 11 and the end portion of the first spiral portion H1 Can be cut. As described above, the first roll 11 and the second roll 12 each have a predetermined length so that the first spiral portion H1 extends relatively longer than the second spiral portion H2, The strip F is supplied. 23, the first spiral portion H1 is disconnected from the separation membrane strip F1 supplied from the first roll 11 while being extended longer than the second spiral portion H2, The electrode assembly A is formed such that the first spiral portion H1 covers the end portion of the second spiral portion H2.

Next, the assembly transfer unit 80 is a device for transferring the electrode assembly A along a predetermined path so as to perform the taping operation and the loading operation.

The assembly transfer unit 80 transfers the electrode assembly A separated from the separation membrane strip F1 supplied from the first roll 11 by the cutting unit 70 to the taping unit 90 And between the separator folding unit 20 and the stacking unit 100 so as to be capable of being transported to the stacking unit 100. The assembly transfer unit 80 includes a transfer jig 82 capable of holding and releasing the electrode assembly A and a fifth transfer member 84 capable of transferring the transfer jig 82 along a predetermined path .

The transfer jig 82 has a clamping structure capable of gripping or releasing the electrode assembly A. 22, a pressure roller 82a capable of pressing the end portion of the first spiral portion H1 which is pulled away from the electrode assembly A along the separation membrane strip F1 is provided in the transfer jig 82 Can be mounted.

The fifth conveying member 84 is installed in the region between the separator folding unit 20 and the stacking unit 100, as shown in Fig. The fifth conveying member 84 is coupled with the conveying jig 82 through the connecting bar 82b to reciprocally convey the conveying jig 82 in the vertical direction and the horizontal direction.

22, when the main body 72 of the cutting unit 70 is moved away from the electrode assembly A, the feeding jig 82 is moved by the fifth feeding member 84, (A), the main body 72 of the cutting unit 70 is moved to enter the formed space. 22, the transfer jig 82 is moved toward the electrode assembly A so as to come into pressure contact with the end portion of the first helical portion H1 pulled toward the cutting unit 70, A predetermined tension can be applied to the hysteresis line H1. Then, the cutting unit 70 can more smoothly cut the end portion of the first spiral portion H1 in a tense state.

24, when the cutter 76 of the cutting unit 70 cuts the connection point between the separation membrane strip F and the end portion of the first spiral portion H1 , The electrode assembly (A) can be gripped after being further moved toward the electrode assembly (A).

24, the conveying jig 82 is moved to the stacking unit 100 via the taping unit 90 and then is fed to the seating member 102 of the stacking unit 100 through the electrode assembly A ). ≪ / RTI >

Next, the taping unit 90 is a device for fixing the separation membrane or the hull H separated from the separation membrane strip F.

The taping unit 90 is provided with a separator folding unit 20 for allowing the electrode assembly A moving in the state of being held by the conveying jig 82 toward the stacking unit 100 to pass therethrough, And the stacking unit (100). This taping unit 90 has a structure in which a tape T is attached to an end portion of a first spiral portion H1 which is separated from a separation membrane strip F and is in a free end state as shown in Fig. H). The first spiral portion H1 is fixed in a state surrounding the end portion of the second spiral portion H2 so that the stacking state of the separation membrane or the hull H and the electrode members E1 and E2 can be more stably maintained have.

Next, the loading unit 100 is a device for loading and storing the electrode assembly A that has been manufactured.

The loading unit 100 is installed so that the electrode assembly A having passed through the taping unit 90 can be introduced, as shown in Figs. 16 and 21. Fig. The stacking unit 100 includes a seating member 102 for placing the electrode assembly A received from the conveying jig 82 passing through the taping unit 90 on the conveyor belt 104, And a conveyor belt 104 for transferring the electrode assembly A seated by the conveyor belt 104 and stacking the electrode assembly A on a loading box (not shown).

26 is a sectional view taken along the line I-I 'of the electrode assembly shown in Fig.

26, an electrode assembly A manufactured by using the electrode assembly manufacturing apparatus 1 includes a spiral folded separation membrane or a hull H and a separator H formed between adjacent helical layers of the separation membrane or the hull H, And electrode members E1 and E2 interposed therebetween.

The separation membrane or the hull H comprises a core portion C and a first helical portion H1 which is connected to one end portion of the core portion C and has one end folded spirally around the core portion C, And a second helical portion H2 connected to one end of the core portion C opposite to the one end portion of the core portion C and folded spirally around the core portion C . Particularly, the first helical portion H1 and the second helical portion H2 form a double helix structure extending parallel to each other along the same helical direction, and at least a portion of which faces each other.

As shown in Fig. 26, the core portion C has a flat plate shape having a predetermined area, and is located at the center portion of the separation membrane and the hull (H).

The first helical portion H1 includes a plurality of first intervening portions H1a provided in parallel with the core portion C and a plurality of second intervening portions H1b extending from the first intervening portions H1a, And a plurality of first connection portions H1b connecting the interposing portion H1a to the core portion C or connecting a pair of first interposing portions H1a adjacent to each other among the first interposing portions H1a.

The first member portions H1a have a flat plate shape having a predetermined area and are provided in parallel with the core portion C. [ The first connecting portions H1b are formed at predetermined angles with the core portion C and the first interposer portions H1a so that the first helical portion H1 can be folded spirally.

The sectional area of the electrode assembly A is increased according to the cumulative winding length of the separation membrane strip F and the cumulative number of stacking of the electrode members F1 and F2. Corresponding to this, the length of each first interposing portion H1a and each first connecting portion H1b becomes longer from the core portion C to the outer periphery of the electrode assembly A.

The first helical portion H1 is connected to the second helical portion H2 so as to cover the other end of the second helical portion H2 opposite to one end of the second helical portion H2 connected to one end of the core portion C, (H2). For example, as shown in Fig. 26, the first spiral portion H1 is formed so that the second interposing portion H2a located at the outermost of the electrode assembly C among the second interposer portions H2a is divided into the first And extends longer than the second spiral portion H2 so as to be covered with the interposition portion H1a. However, the present invention is not limited thereto, and the second spiral portion H2 may be elongated in the first spiral portion H1.

The second helical portion H2 includes a plurality of second intervening portions H2a provided in parallel with the core portion C and a second intervening portion H2b of the second intervening portions H2a which is the closest to the core portion C And a plurality of second connection portions H2b connecting the interposing portion H2a to the core portion C or connecting the pair of second interposer portions H2a adjacent to each other among the second interposing portions H2a.

The second member portions H2a have a flat plate shape having a predetermined area and are provided in parallel with the core portion C. [ The second connection portions H2b are formed at predetermined angles with the core portion C and the second interposing portions H2a so that the second spiral portion H2 can be spirally folded.

The first spiral portion H1 and the second spiral portion H2 are formed such that the first interposing portion H1a of at least a portion of the first interposer portions H1a is arranged in the second The first connection portion H1b of at least a part of the first connection portions H1b facing at least a part of the second interposing portion H2a of the interposing portions H2a is provided at least a part of the second connection portions H2b 2 connection portion H2b.

Next, the electrode members E1 and E2 are alternately interposed between the adjacent helical layers of the separation membrane and the hull H so as to have mutually opposite polarities and to be separated from each other by the separation membrane or the hull (H) And includes one first electrode member E1 and at least one second electrode member E2.

The first electrode members E1 and the second electrode members E2 are disposed between the core member C and the first interposing member H1a which is the closest to the core member C, And is interposed alternately between the closest second interposing portion H2a and the core portion C and between the first interposing portion H1a and the second interposing portion H2a which are adjacent to each other.

The first electrode members E1 are each provided at one end E3 of each first electrode member E1 as shown in Fig. 25 and are provided on adjacent helical layers of the separation membrane or the hull H, And a positive electrode tab E4 protruding out of the electrode assembly A through a gap between the positive electrode tab A and the positive electrode tab E4. 25, each of the second electrode members E2 is provided at one end portion E5 of each second electrode member E2 and is provided adjacent to each other of the separation membrane or the hull H, And a negative electrode tab E6 protruding out of the electrode assembly A through a gap between the helical layers. The first electrode members E1 and the second electrode members E2 are formed such that the positive electrode tab E4 and the negative electrode tab E6 are formed on the same side end portion of the electrode assembly A as shown in Fig. As shown in FIG.

25, the positive electrode tab E4 may be provided at a position spaced apart from the center of one end E3 of the first electrode member E1 by a predetermined distance, May be provided at a position spaced apart from the center of one end portion E5 of the second electrode member E2 by a predetermined gap. In this case, as shown in FIG. 25, the first electrode members E1 and the second electrode members E2 are arranged such that the positive electrode taps E4 are aligned in a line between the positive electrode tabs E4, And the cathode tabs E6 are arranged so as to be aligned in a line between the cathode tabs E6.

Such an electrode assembly A is characterized in that a first electrode member E1 composed of an anode and a second electrode member E2 composed of a unitary cathode are alternately interposed between the layers of the separation membrane and the hull H Structure. Therefore, the electrode assembly A can be used as a full cell of a positive electrode / separator / negative electrode structure or a bicell of an anode / (cathode) / separator / cathode (anode) / separator / anode The manufacturing process of the pull cell or the bi-cell can be omitted, and the arranging manner of the electrode members E1 and E2 is simpler and more compact than the conventional stack / folding type electrode assembly formed by stacking. Therefore, the electrode assembly (A) can improve the productivity by reducing the manufacturing time, facilitating the automation of the manufacturing process, minimizing defects due to manufacturing errors or carelessness, ) Can be used to improve the quality of the secondary battery.

FIG. 27 is a flowchart for explaining an electrode assembly manufacturing method using the electrode assembly manufacturing apparatus shown in FIG. 1;

Hereinafter, a method of manufacturing an electrode assembly according to another preferred embodiment of the present invention using the above-described electrode assembly manufacturing apparatus 1 will be described with reference to FIG.

Referring to FIG. 27, a method of manufacturing an electrode assembly according to another preferred embodiment of the present invention includes a step of separating a separation membrane strip F having a strip shape so as to form a spiral shape, The separation membrane and the hull H are wound around the core portion C so that the helical layer is gradually increased with the core portion C as a minimum unit and the separation membrane and the hull H are formed between the respective layers of the separation membrane and the hull H, (S 10) of forming an electrode assembly (A) by alternately interposing a first electrode member (E 1) and a second electrode member (E 2) on the separator and the hull (H) (S20) of separating the separation membrane or the hull (H) and the remaining separation membrane strip (F1) by cutting the connection point between the remaining separation membrane strip (F1) and the separation membrane or the hull (H) (S) of fixing the cut portion of the separation membrane or the hull (H) using a tape 30), and a step (S40) of loading the electrode assembly (A) tapped in the step S30 at a predetermined stacking position.

27, the first electrode member E1 is laminated on one side of the separator or the hull H and the second electrode member E2 is laminated on the separator or the hull H, (S14); The first electrode member E1 and the second electrode member E2 which are stacked in the step S14 are wound around the core member C so as to spirally fold the separator film F and the separator film F, H) of the membrane strip (F). Steps S14 and S18 are repeatedly performed until the predetermined number of the first electrode member E1 and the second electrode member E2 are stacked on the separator and the hull H, respectively.

In the step S14, the first electrode member E1 is laminated on one side of the core member C and the second electrode member E2 is laminated on the core member C After the step S18 is performed for the first time, the first electrode member E1 is laminated on the outermost surface of the separator or the hull H, and the second electrode member E2 is laminated on the other surface And is laminated on the outermost surface of the separation membrane or the hull (H).

When the separation membrane strip F is reversely rotated around the core portion C as in the above step S18, the separation membrane strip F is pulled toward the core portion C in both the one side and the other side, (C) and folded in a spiral manner to form a separation membrane or a hull (H). The separation membrane or the hull H comprises a first spiral portion H1 formed by spirally folding a separation membrane strip F connected to one end of the core portion C and fed from one direction of the separation membrane strip F, And a second spiral portion H2 connected to the other end portion of the core portion C and formed by spirally folding the separation membrane strip F supplied from the other side of the separation membrane F. [

Considering that the separation membrane strip F is pulled toward the core portion C to form a separation membrane or a hull H having the first spiral portion H1 and the second spiral portion H2, As shown in FIG. 27, between the steps S14 and S18, or simultaneously with the step S18, the separation membrane strip F is applied to the core part C from both the one side and the other side (S16).

The step S16 is repeatedly performed until the predetermined number of the first electrode member E1 and the second electrode member E2 are stacked on the separator and the hull H, as in the steps S14 and S18 .

The step S16 corresponds to the increase in the cross-sectional area of the electrode assembly A depending on the cumulative winding length of the separation membrane strip F and the cumulative number of stacking of the first electrode member E1 and the second electrode member E2 And the supply length of the separation membrane strip F is increased stepwise every time S16 is repeatedly performed.

In step S16, after the last first electrode member E1 and the second electrode member E2 are stacked on the separation membrane or the hull H in step S14, F is newly wound on the separation membrane or the hull H so as to surround the last first electrode member E1 and the second electrode member E2, the first spiral portion H1 is wound around the second spiral portion H2 The separation membrane strip F having a predetermined length is supplied to the core portion C from both directions so as to cover the end portion of the second spiral portion H2.

The remaining separation membrane strip F1 and the first spiral portion H1 which are not wound on the separation membrane or the hull H of the separation membrane strip F supplied from one side of the separation membrane strip F, And separating the separation membrane or the hull H from the remaining separation membrane strip F1 through cutting of the connection point at the end of the separation membrane membrane. Then, the first spiral portion H1 extends longer than the second spiral portion H2 to cover the end portion of the second spiral portion H2.

Then, in step S30, the end of the first spiral part H1 cut in step S20 is fixed to the outer surface of the separation membrane or the hull H by using a tape T. Then, The separation membrane and the hull H of the electrode assembly A are further tightly fixed while the first electrode member E1 and the second electrode member E2 alternately interposed between the respective layers are wrapped.

Next, in step S40, the electrode assembly A having the tapered ends of the first spiral H1 is loaded at a predetermined stacking position in step S30.

The first electrode member E1 may be formed of a positive electrode having a positive electrode tab E4 and the second electrode member E2 may be a negative electrode having a negative electrode tab E6.

Corresponding to this, in the step S14, the first electrode member E1 and the second electrode member E2 are formed such that the positive electrode tab E4 and the negative electrode tab E6 protrude to the outside through a gap between the respective layers of the separation membrane and the hull H, And the two-electrode member E2 may be laminated on the separator or the hull (H).

The positive electrode tab E4 is provided at one end E3 of the first electrode member E1 and is provided at a predetermined distance from the center of one end E3 of the first electrode member E1 And the negative electrode tab E6 is provided at one end E5 of the second electrode member E2 and is spaced from the center of one end E5 of the second electrode member E2 by a predetermined gap .

The step S10 is performed before the step S14 and the positive electrode tab E4 is disposed so as to be eccentric with respect to the center of the one end E3 of the first electrode member E1 The first electrode member E1 and the positive electrode tab E4 are disposed alternately with respect to the center of one end E3 of the first electrode member E1, And the second electrode member E2 and the negative electrode tab E6 arranged eccentrically with respect to the center of the one end E5 of the second electrode member E2, (S12) alternately supplying a second electrode member (E2) disposed so as to be eccentric to the other with respect to the center of one end portion (E5) of the second electrode member (E3) .

The step S12 includes a pair of first electrode traces 32a and 32b which are arranged so that the positive electrode tab E4 is eccentric to the other side with respect to the center of one end E3 of the first electrode member E1 And the negative electrode tab E6 is provided so as to be eccentric to the other side with respect to the center of one end portion E5 of the second electrode member E2 And the second electrode member E2 may be alternately supplied from a pair of the second electrode trays 52a and 52b.

In step S14, the positive electrode taps E4 and the positive electrode taps E4 are aligned in a line and the first electrode member E1 and the second electrode member E2 supplied in step S12 are aligned, The taps E6 may be formed by laminating the negative electrode taps E6 on the separation membrane or the hull H so as to be aligned in a line. Step S14 may be performed such that the positive electrode tab E4 and the negative electrode tab E6 protrude to the outside through the same side end portion of the electrode assembly A. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

1: electrode assembly manufacturing apparatus
10: Membrane supply unit
11: First roll
12: second roll
12a: winding jig
12b: first conveying member
20: membrane folding unit
22: Folding jig
24:
26: second conveying member
30: a first electrode supply unit
32a, 32b: a first stacking tray
34: first electrode feeder
34a, 34b: first supply arm
34c:
34d: first vacuum adsorption pad
36: First electrode aligner
36a: a first alignment plate
36b: first alignment member
38: first electrode detector
40: first electrode stacking unit
42: First lamination plate
42a:
44: First electrode stacking machine
44a: second vacuum adsorption pad
44b: third conveying member
50: second electrode supply unit
52a, 52b: a second stacking tray
54: second electrode feeder
54a, 54b: second supply arm
54c:
54d: third vacuum adsorption pad
56: Second electrode aligner
56a: second alignment plate
56b: second alignment member
58: Second electrode detector
60: Second electrode stack unit
62: second lamination plate
62a:
64: second electrode stacking machine
64a: fourth vacuum adsorption pad
64b: fourth transfer member
70: Cutting unit
80: Assembly transfer unit
90: Taping unit
100: stacking unit
F, F1, F2: Membrane strip
C: Core portion
E1: the first electrode member
E4: Bipolar tab
E2: second electrode member
E6: Negative electrode tab
H: Membrane or hull
H1: First spiral part
H1a: first member
H1b: first connection portion
H2: second helical part
H2a: second member
H2b: second connection portion

Claims (42)

A first roll on which one side of the separator strip is wound and a second roll on which the other side of the separator strip is wound, and the first roll and the second roll are respectively wound on the first roll and the second roll, A separation membrane supply unit for supplying the separation membrane strip toward a core portion side of the separation membrane strip positioned between the first and second rolls;
A separator folding unit for winding the separator strip around the core portion to form a separation membrane or a hull which is spirally folded about the core portion and includes the core portion;
A first electrode stacking unit for stacking the first electrode member on one surface of the separation membrane or the hull; And
And a second electrode stacking unit for stacking a second electrode member on the other surface of the separation membrane or the hull;
The separator folding unit is configured to fold the first electrode member and the second electrode member stacked in the separation membrane strip so that the first electrode member and the second electrode member are stacked on the separation membrane or the hull, Wherein the strip is wound to form an electrode assembly in which the first electrode member and the second electrode member are sandwiched between respective layers of the separation membrane and the hull. The method according to claim 1,
Wherein the separator folding unit winds up the separator strip so that the core portion is rotated reversely each time the first electrode member and the second electrode member are stacked on the separator or the hull. The method according to claim 1,
Wherein the first roll and the second roll each have a length corresponding to a cumulative winding length of the separation membrane strip and an increase in cross sectional area of the electrode assembly depending on the number of cumulative stacks of the first electrode member and the second electrode member, And the supply length of the strip is increased stepwise. The method according to claim 1,
Wherein the separation membrane-
At least one driven roller installed so that the separation membrane strip is seated between at least one of the first roll and the core part and between the second roll and the core part and guides the separation membrane strip to the core part; And
The separation membrane module according to any one of claims 1 to 3, wherein the separation membrane strip is installed between the first roll and the core part and between the second roll part and the core part, and is reciprocated along a predetermined path to control a tension applied to the separation membrane strip And at least one dancing roller for applying a voltage to the electrode assembly. The method according to claim 1,
The separation membrane or the hull may comprise:
A first spiral portion connected to one end of the core portion and spirally folded by the separation membrane strip supplied from the first roll; And
A separation membrane strip connected to the other end of the core and fed from the second roll has a spiral folded second spiral;
In the second roll,
When the separator folding unit finally rewinds the separation membrane strip after the last first electrode member and the second electrode member are laminated on the separation membrane or the hull, the first spiral portion extends relatively longer than the second spiral portion And the other side of the separation membrane strip is wound by a predetermined length so as to cover the end of the second spiral portion. 6. The method of claim 5,
The second roll
A winding jig capable of gripping or releasing the other end of the separation membrane strip; And
And a first conveying member reciprocable so as to pull the winding jig into the inside of the second roll or out of the second roll;
The second roll
The other end of the separation membrane strip being in a free-end state is gripped from the outside of the second roll and is then driven to rotate in the state of entering the inside of the second roll, and the other side of the separation membrane strip is rotated Wherein the electrode assembly is wound with a predetermined length. The method according to claim 6,
Characterized in that the other end of the separation membrane strip is wound around the core part in the separation membrane or the hull to release the other end of the separation membrane strip at a predetermined time so as to form the end of the second spiral part, Assembly manufacturing apparatus. 6. The method of claim 5,
Further comprising a cutting unit installed between the core unit and the first roll and cutting a connection point between the separation membrane strip and the end of the first spiral part. 9. The method of claim 8,
An assembly transfer unit capable of transferring the electrode assembly along a predetermined transfer path; And
Further comprising: a taping unit that is provided on the transport path and fixes an end of the first spiral cut by the cutting unit with a tape. 10. The method of claim 9,
Further comprising a stacking unit installed on the downstream side of the conveying path as compared to the taping unit and on which the electrode assembly passed through the taping unit is stacked. 9. The method of claim 8,
The cutting unit includes:
The electrode assembly comprising: an electrode assembly having a first electrode and a second electrode,
The cutting unit includes:
And an end portion of the first spiral portion is drawn by the predetermined distance and then cut. 12. The method of claim 11,
The assembly transfer unit comprises:
Wherein the cutting unit is capable of pressing the first spiral portion so that a tension is applied to an end portion of the first spiral portion after moving toward the electrode assembly when the cutting unit is dragged by the predetermined distance to the end portion of the first spiral portion,
The assembly transfer unit comprises:
Wherein when the end of the first spiral portion is cut, the electrode assembly is gripped and then transported along the transport path. The method according to claim 1,
The separator folding unit includes:
A folding jig capable of grasping or grasping the separation membrane or the hull and the newly stacked first electrode member and the second electrode member together; And
Wherein the first electrode member and the second electrode member are axially coupled to the folding jig and the folding jig grips the separation membrane or the hull and the newly stacked first electrode member and the second electrode member together, And a rotating member for rotating the folding jig so as to cover the separation membrane strip or the separation membrane strip newly wound on the separation membrane or the hull. 14. The method of claim 13,
The folding jig includes:
When the newly wound separator strip covers the newly stacked first electrode member and the second electrode member, the separation membrane or the hull and the newly stacked first electrode member and the second electrode member are grasped together Electrode assembly manufacturing apparatus. 15. The method of claim 14,
The rotating member includes:
Wherein the folding jig grips the separation membrane or the hull and the newly stacked first electrode member and the second electrode member together and the case where the folding jig grips the separation membrane or the hull and the newly stacked first electrode member and the second electrode member, Wherein the folding jig is rotated in the reverse direction when the members are gripped together. 16. The method of claim 15,
The separator folding unit includes:
Further comprising a second conveying member capable of reciprocatingly moving the folding jig so as to be close to the separation membrane or the hull or away from the separation membrane or the hull. 17. The method of claim 16,
Wherein the second conveying member conveys the folding jig closer to the separation membrane or the hull when the first electrode member and the second electrode member are newly laminated on the separation membrane or the hull,
Wherein the second conveying member conveys the folding jig away from the separating membrane or the hull when the newly wound separator strip covers the newly stacked first electrode member and the second electrode member. Assembly manufacturing apparatus. The method according to claim 1,
A first electrode supply unit capable of supplying the first electrode member to the first electrode stack unit; And
And a second electrode supply unit capable of supplying the second electrode member to the second electrode laminate unit. 19. The method of claim 18,
Wherein the first electrode supply unit includes:
A first stacking tray on which the first electrode member is stacked;
And a first electrode feeder for feeding the first electrode member from the first stacking tray to the first electrode stacking unit;
Wherein the second electrode supply unit includes:
A second stacking tray on which the second electrode member is stacked;
And a second electrode feeder for feeding the second electrode member from the second stacking tray to the second electrode stacking unit. 20. The method of claim 19,
Wherein the first electrode supply unit includes:
Further comprising a first electrode aligner for aligning the first electrode members supplied from the first electrode supplier in a predetermined arrangement and delivering the aligned first electrode members to the first electrode stack unit,
Wherein the second electrode supply unit includes:
Further comprising a second electrode aligner for aligning the second electrode member supplied from the second electrode supplier in a predetermined arrangement and delivering the second electrode member to the second electrode stacking unit. 21. The method of claim 20,
Wherein the first electrode aligner comprises:
A first alignment plate driven to rotate repeatedly about a rotation axis by a predetermined rotation angle interval and then to stop for a predetermined time; And
And a plurality of first alignment members arranged radially on the first alignment plate such that the first alignment plates are spaced apart from each other by the rotation angle interval about the rotation axis of the first alignment plate and aligning the first electrode members in the arrangement form;
Wherein the second electrode aligner comprises:
A second alignment plate driven to rotate repeatedly about a rotation axis by a predetermined rotation angle interval and then to stop for a predetermined time; And
And a plurality of second alignment members provided radially on the second alignment plate such that the second alignment plates are spaced apart from each other by the rotation angle interval about the rotation axis of the second alignment plate and aligning the second electrode members in the arrangement form Wherein the electrode assembling apparatus comprises: 22. The method of claim 21,
Wherein the first electrode feeder comprises:
Wherein the first electrode plate is configured to be capable of grasping or grasping the first electrode member, and when the first alignment plate is rotated by the rotation angle interval and then stopped, Of the first alignment member,
Wherein the second electrode feeder comprises:
And a second electrode member held in advance in the second stacking tray when the second aligning plate is rotated after being rotated by the rotation angle interval and then stopped, And the second alignment member is seated on the second alignment member. 23. The method of claim 22,
Wherein the first electrode feeder comprises:
And at least one first vacuum adsorption pad capable of vacuum-adsorbing or desorbing the first electrode member,
Wherein the second electrode feeder comprises:
And at least one second vacuum adsorption pad capable of vacuum-adsorbing or desorbing the second electrode member. 23. The method of claim 22,
Wherein the first electrode stack unit is spaced apart from the first electrode feeder by an integer multiple of the rotation angle interval about the rotation axis of the first alignment plate, The first electrode member resting on one of the first alignment members is received,
Wherein the second electrode laminated unit is spaced apart from the second electrode feeder by an integer multiple of the rotation angle interval about the rotation axis of the second alignment plate and the second alignment plate is rotated by the rotation angle interval Wherein the second electrode member is received in one of the second alignment members when the second electrode member is stopped. 25. The method of claim 24,
Wherein the first electrode supply unit includes:
The first electrode feeder and the first electrode laminate unit are disposed between the first electrode feeder and the first electrode laminate unit such that the first electrode feeder and the first electrode laminate unit are separated from each other by an integral multiple of the rotation angle interval, And a first electrode sensor capable of detecting whether at least two first electrode members are seated on the first alignment member,
Wherein the second electrode supply unit includes:
And the second electrode feeder and the second electrode laminate unit are spaced apart from each other by an integral multiple of the rotation angle interval with respect to the rotation axis of the second alignment plate, And a second electrode detector capable of detecting whether or not two or more second electrode members are seated on the second alignment member. 19. The method of claim 18,
Wherein the first electrode stack unit includes:
A first lamination plate driven to rotate repeatedly about a rotation axis by a predetermined rotation angle interval and then to stop for a predetermined time; And
Wherein the first electrode plate is radially provided on the first lamination plate so as to be spaced apart from each other by the rotation angle interval about the rotation axis of the first lamination plate and the first electrode member supplied from the first electrode supply unit is provided on one surface of the separation membrane or the hull And a plurality of stacked first electrode stackers,
Wherein the second electrode stack unit comprises:
A second lamination plate driven to repeat the rotation for a predetermined time after being rotated by a predetermined rotation angle interval about the rotation axis; And
The second electrode plate is radially provided on the second lamination plate so as to be spaced apart from each other by the rotation angle interval about the rotation axis of the second lamination plate and the second electrode member supplied from the second electrode supply unit is provided on the other surface of the separation membrane or the hull And a plurality of stackable second electrode stacking units. 27. The method of claim 26,
When the first lamination plate is rotated after being rotated by the rotation angle interval and then stopped, any one of the first electrode lamination units grasps the first electrode member supplied from the first electrode supply unit, The first electrode member preliminarily held on the one surface of the separator or the hull,
When the second lamination plate is stopped after being rotated by the rotation angle interval, one of the second electrode lamination units grasps the second electrode member supplied from the second electrode lamination unit, and the other one of the second electrode lamination Wherein the second electrode member is preliminarily held on the other surface of the separator or the hull. 28. The method of claim 27,
Each of the first electrode stackers may include:
A third vacuum adsorption pad capable of vacuum-adsorbing or desorbing the first electrode member; And
And the third vacuum adsorption pad has a third conveying member reciprocable so as to be close to the rotation axis of the first lamination plate or away from the rotation axis of the first lamination plate;
Each of the second electrode stackers may include:
A fourth vacuum adsorption pad capable of vacuum-adsorbing or desorbing the second electrode member; And
Wherein the fourth vacuum adsorption pad has a fourth conveying member reciprocally movable so as to be close to the rotation axis of the second laminating plate or away from the rotation axis of the second laminating plate. 29. The method of claim 28,
And the third vacuum adsorption pad of the other one of the first electrode stackers is rotated by the third transfer member of the other one of the first electrode stackers when the first lamination plate is rotated by the rotation angle interval and then stopped The first electrode member being preliminarily gripped after being transferred to one surface of the separator or the hull and being gripped to be laminated on one surface of the separator or the hull,
The fourth vacuum adsorption pad of the other one of the second electrode stackers is rotated by the fourth transfer member of the other one of the second electrode stackers when the second stack plate is rotated by the rotation angle interval and then stopped Wherein the second electrode member is held on the other surface of the separation membrane or the hull, and the second electrode member is preliminarily held on the other surface of the separation membrane or the hull. The method according to claim 1,
Wherein the first electrode member is a unit cell and the second electrode member is a unit cell. The method according to claim 1,
The first electrode member is a first unit cell in which an anode, a separator, and a cathode are stacked such that any one of an anode and a cathode is stacked on both outermost layers,
Wherein the second electrode member is a second unit cell in which an anode, a separator, and a cathode are stacked such that one of the anode and the cathode is stacked on both outermost layers. A first roll on which one side of the separator strip is wound and a second roll on which the other side of the separator strip is wound, and the first roll and the second roll are respectively wound on the first roll and the second roll, A separation membrane supply unit for supplying the separation membrane strip toward a core portion side of the separation membrane strip positioned between the first and second rolls;
A separator folding unit for winding the separator strip around the core portion to form a separation membrane or a hull which is spirally folded about the core portion and includes the core portion;
A first electrode stacking unit for stacking a positive electrode having a positive electrode tab on one surface of the separator or the hull; And
And a second electrode stacking unit for stacking a cathode provided with a negative electrode tab on the other surface of the separator or the hull;
The separator folding unit may take up the separation membrane strip so that the anode and the cathode can be wrapped in the separator strip newly stacked each time the anode and the cathode are stacked on the separator or the hull, And the electrode assembly is alternately interposed between the layers of the separation membrane and the hull. 33. The method of claim 32,
Wherein the first positive electrode stacking unit stacks the positive electrode on one surface of the separator or the hull so that the positive electrode tab protrudes outside the electrode assembly,
Wherein the second electrode stacking unit stacks the negative electrode on the other surface of the separation membrane or the hull so that the negative electrode tab protrudes outside the electrode assembly. 34. The method of claim 33,
A first electrode supply unit that supplies the positive electrode to the first electrode stack unit; And
And a second electrode supply unit for supplying the negative electrode to the second electrode laminate unit;
Wherein the first electrode supply unit includes a positive electrode arranged such that the positive electrode tab is eccentrically eccentrically disposed with respect to the center portion when the positive electrode tab is provided so as to be spaced apart from the central portion of one end of the positive electrode by a predetermined gap, The positive electrode disposed so that the tab is eccentric to the other side with respect to the central portion is alternately supplied to the first electrode stack unit,
Wherein the second electrode supply unit includes a negative electrode arranged such that the negative electrode tab is eccentrically eccentric with respect to the center portion when the negative electrode tab is spaced apart from the center of one end of the negative electrode by a predetermined gap, Wherein a negative electrode arranged such that a tab is eccentric to the other side with respect to the center portion is alternately supplied to the second electrode laminate unit. 35. The method of claim 34,
Wherein the first electrode supply unit includes:
One of which is provided with a positive electrode arranged such that the positive electrode tab is eccentric to one side with respect to the center portion and the other is provided with a pair of positive electrodes arranged such that the positive electrode tab is eccentrically eccentric to the other side with respect to the center portion, Loading trays; And
A first electrode feeder for alternately feeding an anode disposed in any one of the first stacking trays and an anode arranged in the other stacking tray to the first electrode stacking unit;
Wherein the second electrode supply unit includes:
One of which is provided with a negative electrode arranged such that the negative electrode tab is eccentric to one side with respect to the center portion and the other of which is provided with a pair of negative electrodes arranged such that the negative electrode tab is eccentrically arranged with respect to the center portion, Loading trays; And
And a second electrode feeder for alternately feeding a negative electrode disposed in any one of the second stacking trays and a negative electrode disposed in the other one of the second stacking trays to the second electrode stacking unit. Assembly manufacturing apparatus. 36. The method of claim 35,
Wherein the first electrode feeder comprises:
And a pair of first supply arms which are connected to each other at predetermined ends so as to form a predetermined angle and which are rotated around a rotation axis provided at the one end and are capable of grasping or grasping the first electrode member,
Wherein the second electrode feeder comprises:
And a pair of second supply arms which are connected to each other at predetermined ends so as to form a predetermined angle and are rotated around a rotation axis provided at the one end and are capable of grasping or grasping the second electrode member,
Wherein the first electrode feeder comprises:
When one of the first supply arms grasps the first electrode member from one of the first stacking trays, the other first supply arm grasps the first electrode member held in advance, Unit,
The second supply arms
When one of the second supply arms grips the second electrode member from one of the second stacking trays, the other second supply arm grips the second electrode member held in advance to grip the second electrode stacking member, And the electrode assembly is supplied to the unit. 37. The method of claim 36,
Wherein the first electrode supply unit includes:
Further comprising a first electrode aligner for aligning the first electrode members, which are gripped by the other first supply arm, in a predetermined arrangement and delivering the first electrode members to the first electrode stack unit,
Wherein the second electrode supply unit includes:
Further comprising a second electrode aligner for aligning the second electrode member, which is gripped by the second supply arm, by a predetermined arrangement and delivering the second electrode member to the second electrode stack unit. 39. The method of claim 37,
Wherein the first electrode aligner comprises:
A first alignment plate driven to rotate repeatedly about a rotation axis by a predetermined rotation angle interval and then to stop for a predetermined time; And
And a plurality of first alignment members arranged radially on the first alignment plate such that the first alignment plates are spaced apart from each other by the rotation angle interval about the rotation axis of the first alignment plate and aligning the first electrode members in the arrangement form;
Wherein the second electrode aligner comprises:
A second alignment plate driven to rotate repeatedly about a rotation axis by a predetermined rotation angle interval and then to stop for a predetermined time; And
And a plurality of second alignment members provided radially on the second alignment plate such that the second alignment plates are spaced apart from each other by the rotation angle interval about the rotation axis of the second alignment plate and aligning the second electrode members in the arrangement form Wherein the electrode assembling apparatus comprises: 39. The method of claim 38,
Wherein the first electrode feeder comprises:
When one of the first supply arms grips the first electrode member from one of the first stacking trays and the other one of the first supply arms The first electrode member preliminarily held by the arm is disengaged and is driven to be seated on one of the first alignment members,
Wherein the second electrode feeder comprises:
When the second alignment plate is rotated by the rotation angle interval and then stopped, one of the second supply arms grasps the second electrode member from one of the second stacking trays, and at the same time, And the second electrode member held in advance by the arm is disengaged and driven to be seated on any one of the second alignment members. 40. The method of claim 39,
Wherein the first electrode stack unit includes:
Wherein when the first alignment plate is rotated after being rotated by the rotation angle interval and then stopped, the first electrode member aligned in the arrangement is transferred to the other first alignment member,
Wherein the second electrode stack unit comprises:
Wherein when the second alignment plate is rotated by the rotation angle interval and then stopped, the second electrode member arranged in the arrangement form is delivered to the other second alignment member. 41. The method of claim 40,
Wherein the first electrode stack unit includes:
A first laminating plate driven to rotate for a predetermined time after being rotated by a predetermined rotational angle interval about a rotational axis and driven to have the same driving period as the first aligning plate; And
The first lamination plate is radially provided on the first lamination plate so as to be spaced apart from each other by the rotation angle interval about the rotation axis of the first lamination plate and the first electrode member seated on the other first alignment member, And a plurality of first electrode stacking units stackable on one surface,
Wherein the second electrode stack unit comprises:
A second laminating plate driven to repeatedly rotate about a rotation axis by a predetermined rotation angle interval and stopping for a predetermined period of time while being driven to have the same driving period as the second alignment plate; And
Wherein the first and second lamination plates are radially provided on the second lamination plate so as to be spaced apart from each other by the rotation angle interval about the rotation axis of the second lamination plate, And a plurality of second electrode stacking units stackable on the other surface. 42. The method of claim 41,
When the first lamination plate is rotated after being rotated by the rotation angle interval and then stopped, one of the first electrode stackers grasps the first electrode member seated on the other one of the first alignment members, and the other one of the first The electrode laminator stacks the first electrode member previously held on one surface of the separator or the hull,
When the second lamination plate is rotated after being rotated by the rotation angle interval and then stopped, one of the second electrode stackers grasps the second electrode member seated on the other one of the first alignment members, and the other one of the second Wherein the electrode stacking unit stacks the second electrode member pre-gripped on the other surface of the separation membrane or the hull.

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