WO2019088452A1

WO2019088452A1 - Electrode cutting and feeding device for secondary battery and secondary battery manufacturing apparatus including same

Info

Publication number: WO2019088452A1
Application number: PCT/KR2018/011449
Authority: WO
Inventors: 조재경; 이호섭; 이지용; 기대욱; 최찬진
Original assignee: 삼성에스디아이(주)
Priority date: 2017-10-30
Filing date: 2018-09-27
Publication date: 2019-05-09
Also published as: KR102540145B1; KR20190047999A

Abstract

Various embodiments of the present invention relate to an electrode cutting and feeding device for a secondary battery and a secondary battery manufacturing apparatus including same. The technical problem to be addressed is to provide: an electrode cutting, accelerating and feeding device for a secondary battery, the device being capable of cutting a positive electrode and/or a negative electrode, which is provided in the form of a reel during the manufacture of a secondary battery, into individual sheets while transporting the electrode at high speed, and then quickly feeding the cut electrode to the subsequent process continuously and/or by accelerating the electrode; and a secondary battery manufacturing apparatus including same. To this end, an electrode cutting, accelerating and feeding device for a secondary battery, and a secondary battery manufacturing apparatus including same are disclosed, the electrode cutting, accelerating and feeding device including: a cutting part for cutting and supplying an electrode; a supply roller part for receiving the cut electrode from the cutting part and continuously feeding the electrode to a subsequent process; and a push belt part that places the electrode in close contact with the supply roller part.

Description

Device for cutting and injecting electrode for secondary battery and apparatus for manufacturing secondary battery having same

Various embodiments of the present invention relate to an electrode cutting and charging apparatus for a secondary battery and an apparatus for manufacturing a secondary battery having the same.

In general, the electrode cutting, acceleration, and insertion methods in the manufacturing process of the secondary battery are, for example, an insert method using a grip, such as a cutter acceleration step, an electrode gripping step, A step of re-accelerating the cutter (grip), a step of injecting an electrode (accelerating input), a step of releasing the grip, and a step of moving back and returning the cutter (grip).

Such a gripping method is easy to secure the positional accuracy of the input electrode. However, as the feeding speed of the electrode increases, rapid acceleration and deceleration of the cutter (grip) There is a limitation in improving the production speed due to the necessity of changing the direction.

Further, in this conventional method, as the feeding speed of the electrode is increased, the vibration phenomenon of the equipment and the unit becomes greater, the life of the equipment is lowered, and the insertion accuracy of the electrode is lowered.

The above-described information disclosed in the background of the present invention is only for improving the understanding of the background of the present invention, and thus may include information not constituting the prior art.

Various embodiments of the present invention can be achieved by cutting a positive electrode and / or a negative electrode supplied in a reel form during the manufacture of a secondary battery into a single piece at high speed feeding and then continuously and / The present invention also provides an apparatus for cutting and charging an electrode for a secondary battery and an apparatus for manufacturing a secondary battery having the same.

That is, in order to overcome the limitations of the gripping method, the various embodiments of the present invention can be applied to a case in which, instead of the discontinuous acceleration input method by forward and backward movement of the cutter (grip) An electrode cutting and charging device for a battery and a device for manufacturing a secondary battery having the same are provided.

Specifically, in various embodiments of the present invention, the cutter, the acceleration, and the input method of the electrode are changed by the cutter (grip) so that the cutter (grip) only cuts the electrode, The amount of acceleration and the amount of deceleration of the cutter (grip) are reduced by a system in which the cutter (grip) is continuously inserted and / or a method in which the feed roller and the push belt are accelerated and inserted into the cut electrode, thereby reducing the mechanical load, The present invention also provides an apparatus for cutting and injecting an electrode for a secondary battery and an apparatus for manufacturing a secondary battery having the same, which can improve the productivity by improving the operation speed and the operation speed.

According to various embodiments of the present invention, there is provided an apparatus for cutting and injecting an electrode for a secondary battery, comprising: A feed roller unit that receives the cut electrode from the cut unit and continuously feeds the cut electrode to the next process; And a push belt portion for bringing the electrode into close contact with the supply roller portion.

The supply roller unit causes the supplied electrode to contact only a part of the supply roller unit, and a vacuum is formed at a contact part of the electrode, so that the electrode is injected into the supply roller unit while being vacuum-adsorbed.

The feeding roller portion includes an inner ring having a circular circumferential surface and a flat string; And a cylindrical outer ring surrounding the inner ring and having a plurality of through holes, wherein the inner ring is fixed without rotating, a vacuum region is formed through the string, and the outer ring rotates about the inner ring And the electrode is brought into contact with the outer ring by the vacuum formed in the string to be input to the next step.

When the electrode is supplied to the feed roller unit, the push belt unit brings the electrode into contact with the feed roller unit, and the feed roller unit adsorbs the electrode with a vacuum, and accelerates the electrode without slipping due to the generated frictional force .

Wherein the cutting portion accelerates at a first speed to cut the electrode and feed the cut electrode to the feed roller portion and the feed roller portion then accelerates the electrode to a second speed higher than the first speed, The electrode is put into the next process. The feeding roller portion decelerates at the first speed when feeding the cut electrode to the feeding roller portion.

The push belt portion may be in the form of a push roller, but the first and second rollers may be in close contact with the surface of the feed roller portion so as to stably fix and feed the electrode plate. A third roller disposed apart from the first and second rollers; And a push belt coupled along the first, second and third rollers, wherein the push belt between the first and second rollers is in close contact with the surface of the feed roller portion.

An apparatus for manufacturing a secondary battery according to various embodiments of the present invention includes an electrode supply unit for supplying an electrode for a secondary battery; The above-described electrode cutting and feeding apparatus; An electrode loading unit disposed at a rear end of the electrode cut-and-injecting apparatus to load the cut electrode; A separator supply unit for supplying a separator to upper and lower surfaces of the electrode on the electrode loading unit, respectively; A sealing part forming a sealing area around the separator so that the separator surrounds the electrode in a bag shape; A separator cutting portion for cutting the sealing region of the separator to provide a single separator bag including electrodes; And a stack portion stacked on one side of the separator bag, the electrode having a polarity different from the polarity of the electrode.

The electrode feeder and the electrode cutter and feeder are a set, and the pair is provided.

The pair of sets operates alternately with each other so that the feeding speed of the electrode by the electrode loading portion is twice as fast as the feeding speed of the electrode by the set.

In an embodiment of the present invention, an anode and / or a cathode supplied in a reel form during the manufacture of a secondary battery is cut into a single piece during high-speed feeding, and then the cut electrode is continuously and / An electrode cutting and charging apparatus for a secondary battery and a secondary battery manufacturing apparatus having the same are provided.

That is, in order to overcome the limitations of the gripping method, the embodiment of the present invention can be applied to a secondary battery electrode having a continuous charging method of the electrode using a roller, instead of the discontinuous acceleration input method by forward and backward movement of the cutter A cutting input device and a secondary battery manufacturing device having the same are provided.

Specifically, in the embodiment of the present invention, the cutter, the acceleration, and the input method of the electrode are changed by the cutter (grip) so that the cutter (grip) only cuts the electrode, And / or a method in which the feed roller and the push belt are accelerated to feed the cut electrode, thereby reducing the amount of acceleration and deceleration of the cutter (grip), thereby reducing the mechanical load and stabilizing the mechanical load The present invention also provides an apparatus for cutting and injecting an electrode for a secondary battery and an apparatus for manufacturing the same, which can improve the productivity by improving the operation speed.

1 is a conceptual diagram showing an example of a secondary battery manufacturing apparatus including an electrode cut-and-charged apparatus for a secondary battery according to various embodiments of the present invention.

FIG. 2B is a schematic view showing a relationship between a supply roller portion and a push belt portion, FIG. 2C is a cross-sectional view of a supply roller portion and an electrode As shown in Fig.

FIG. 3A is a graph showing the time-dependent acceleration and deceleration states of the separable cut portion and the feed roller portion among the electrode cutting and feeding devices for the secondary battery according to various embodiments of the present invention. FIG. 3B is a graph showing the acceleration and deceleration states to be.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.

In the following drawings, thickness and size of each layer are exaggerated for convenience and clarity of description, and the same reference numerals denote the same elements in the drawings. As used herein, the term " and / or " includes any and all combinations of one or more of the listed items. In the present specification, the term " connected " means not only the case where the A member and the B member are directly connected but also the case where the C member is interposed between the A member and the B member and the A member and the B member are indirectly connected do.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise, " and / or " comprising, " when used in this specification, are intended to be interchangeable with the said forms, numbers, steps, operations, elements, elements and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

It is to be understood that the terms related to space such as "beneath," "below," "lower," "above, But may be utilized for an easy understanding of other elements or features. Terms related to such a space are for easy understanding of the present invention depending on various process states or use conditions of the present invention, and are not intended to limit the present invention. For example, if an element or feature of the drawing is inverted, the element or feature described as "lower" or "below" will be "upper" or "above." Thus, " lower " is a concept encompassing " upper " or " lower ".

Referring to FIG. 1, there is shown a schematic view of an example of a secondary battery manufacturing apparatus 100 including an electrode cutting and

feeding apparatus

120A and 120B for a secondary battery according to various embodiments of the present invention.

1, an apparatus 200 for manufacturing a secondary battery according to an embodiment of the present invention includes a first electrode supply unit 110, a first electrode cut-and-charged device 120A, a first electrode loading unit 130 The separator sealing portion 150, the separator cutting portion 160, the second electrode supply portion 170, the second electrode cut-and-put-in device 120B, the second electrode loading portion 140, A stage 180, a stack (not shown), and a stage 190.

The first electrode supply unit 110 may include, for example, but not limited to, a first electrode reel 112 on which the first electrode 111 is wound, To the first electrode cut-and-feeding apparatus 120A. The first electrode supply unit 110 may include at least one or more pairs of electrodes, for example, but not limited thereto.

The first electrode cutter 120A cuts the first electrode 111 fed from the first electrode feeder 110 and cuts and cuts the first electrode 111 successively and / And can be introduced into the electrode loading unit 130. To this end, the first electrode cut-and-feeding device 120A may include a cutting portion, a feeding roller portion (or an acceleration roller portion), a push belt portion and the like, which will be described in detail below again.

Here, the first electrode feeder 110 and the first electrode cut accelerator input device 120A constitute one set, and such a pair may be provided. In Fig. 1, these sets are shown at the upper left and lower left, respectively. In this manner, the pair of sets described above supply and cut the first electrode 111, which is cut while being alternately operated, to the first electrode loading unit 130.

The first electrode loading portion 130 may include, for example and without limitation, a pair of spaced-apart loading rollers 131 and a loading belt 132 coupled to a pair of loading rollers 131 have. The cut first electrode 111 may be loaded on the first electrode loading unit 130 together with the separator.

The feeding speed of the first electrode 111 by the first electrode loading unit 130 is controlled by the feeding speed of the first electrode 111 by the first electrode feeding unit 110 and the first electrode cutting acceleration feeding- It can be about twice as fast as speed. For example, although not limited thereto, the feed rate of the first electrode 111 by the first electrode loading unit 130 is approximately 700 mm / s, and the first electrode feed unit 110 and the first electrode cut acceleration feed The feed / feed rate of the first electrode 111 by the device 120A may be approximately 350 mm / s. This is because the pair of sets (the first electrode feeder 110 and the first electrode cut accelerator input device 120A) alternately operate as described above. Since the pair of first electrode cut-and-throwing apparatuses 120A operate alternately, the cut-off first electrodes 111 are sequentially supplied to the first electrode loading unit 130 without interfering with each other, Lt; / RTI >

The separator supply unit 140 may supply the first separator 141 and the second separator 145 to the upper surface and the lower surface of the first electrode 111 loaded on the first electrode loading unit 130, respectively. That is, the separator supply unit 140 supplies the first separator 141 to the upper surface of the first electrode 111, and the second separator 145 to the lower surface of the first electrode 111. The first and second separators 141 and 145 may include, for example, but not limited to PE (polyethylene), PP (polypropylene), or a base film composed of these layers. In addition, the first and second separators may further include a heat-resistant insulating layer whose surface is coated with an inorganic material such as alumina or boehmite.

The separator supply unit 140 includes a first separator reel 142 wound with a first separator 141 and a second separator reel 146 wound with a second separator 145, ). The separator supply unit 140 may include a first separator 141 wound around the first separator reel 142 and a first separator 141 wound around the first separator reel 142, And a second guide roller 147 for guiding the second separator 145 wound on the second separator reel 146 to the lower surface of the first electrode 111. [

The separator sealing portion 150 may form a sealing region 148 on the separator around the first electrode 111 on the first electrode loading portion 130. That is, the separator sealing portion 150 may be formed by, for example, but not limited to, a first separator 141 and a second separator (not shown) disposed on the upper surface and the lower surface of the first electrode 111, The first electrode 111 can be positioned inside the separator bag 149 by forming the sealing region 148 in the first and

second electrodes

145 and 145.

In this case, the separator sealing portion 150 is formed by simultaneously forming the sealing region 148 with respect to the plurality of first electrodes 111, so that a large number of the separator bags 149 are formed at the same time, have.

The separator cutting portion 160 cuts the sealing region 148 of the separator bag 149 on the first electrode loading portion 130 so that a single separator bag 149 including the first electrode 111 is provided do.

Here, after the separator bag 149 is cut, the appearance of the separator bag 149 can be inspected by the appearance inspecting section 165.

The second electrode supply unit 170 includes a second electrode reel 172 wound with a second electrode 171 having a polarity different from that of the first electrode 111 From which the second electrode 171 can be withdrawn and fed to the second electrode cutting and dosing device 120B. The second electrode supply unit 170 may include at least one pair of electrodes, for example, but not limited thereto.

The second electrode cutter 120B cuts the second electrode 171 supplied from the second electrode supply unit 170 and cuts and cuts the second electrode 171 successively and / And can be supplied to the electrode loading unit 180. For this purpose, the second electrode cutter 120B may include a cutting portion, a feed roller portion (or an acceleration roller portion), a push belt portion, etc., which will be described in detail below again.

Here, the second electrode supply unit 170 and the second electrode cut-and-injecting unit 120B constitute one set, and a pair of such sets may be provided. In Fig. 1, these sets are shown in the upper right and lower right, respectively. In this manner, the pair of sets described above supply and cut the second electrode 171, which has been cut while being alternately operated, to the second electrode loading unit 180.

The second electrode loading portion 180 may include, for example and without limitation, a pair of spaced-apart loading rollers 181 and a loading belt 182 coupled to a pair of loading rollers 181 have. Here, the separator is not supplied to the second electrode 171.

The feeding speed of the second electrode 171 by the second electrode loading unit 180 is set such that the feeding speed of the second electrode 171 by the second electrode feeding unit 170 and the second electrode cutting and putting- Which is about twice as fast as that of the first embodiment. For example, the feed rate of the second electrode 171 by the second electrode loading unit 180 is approximately 700 mm / s, and the second electrode feed unit 170 and the second electrode cut- The feeding / feeding speed of the second electrode 171 by the first electrode 120B may be approximately 350 mm / s. This is because the pair of sets (the second electrode supply part 170 and the second electrode cutting acceleration input device 120B) alternately operate as described above. Since the pair of second electrode cutting and feeding apparatuses 120B alternately operate as described above, the cut second electrodes 171 are sequentially supplied to the second electrode loading unit 180 without interfering with each other, Lt; / RTI >

The stack portion (not shown) may be, for example, but not limited to, a pick and place robot. The stack portion includes, for example, a first pick and place robot that picks and places a separator bag 149 including a first electrode 111 on a stage 190, and a second pick and place robot that picks up a second electrode 171 on a stage 190 And a second pick-and-place robot pick and place on the separator bag 149. Since such a stack portion is well known to those skilled in the art, a description thereof will be omitted.

The stage 190 may be, for example, a substantially flat die in which a separator bag 149 having a first electrode plate 111 and a second electrode 171 are sequentially stacked. That is, the stack portion 191 for the secondary battery is formed on the stage 190 by the stack portion.

Here, a plurality of stages 190 may be provided for improving productivity. Although six stages 190 are shown as an example in the drawing, the present invention is not limited thereto.

As described above, the apparatus 100 for manufacturing a secondary battery according to the embodiment of the present invention includes the separator bag 149 including the first electrode 111 at a high speed, By stacking the two electrodes 171, it is possible to greatly improve the productivity of the stack type secondary battery.

Hereinafter, the electrode cutting-off

devices

120A and 120B in the above-described secondary battery manufacturing apparatus 100 will be described. The first electrode cut-and-put-in apparatus 120A and the second electrode cut-and-put apparatus 120B are referred to collectively as the electrode cut-and-put apparatus 120 and the first electrode 111 and the second electrode 171) are collectively referred to as electrodes.

Referring to FIG. 2A, a schematic diagram of an electrode cutter 120 for a secondary battery according to various embodiments of the present invention is shown. Referring to FIG. 2B, a feed roller portion 124 and a push belt portion 127, And a schematic diagram of the contact area between the supply roller portion 124 and the electrode is shown in FIG. 2C. As shown in FIG.

2A and 2B, the electrode cutter 120 for a secondary battery may include a cutout 121, a feed roller 124, and a push belt 127.

The cutting portion 121 (or the cutter (grip)) can cut the electrode and supply it to the feed roller portion 124. [ The cut portion 121 cuts the electrode having a predetermined length in the substantially vertical direction with respect to the advancing direction of the electrode, while reciprocating substantially parallel to the advancing direction of the electrode. In addition, the cut portion 121 feeds the cut electrode between the feed roller portion 124 and the push belt portion 127.

For this purpose, the cutting portion 121 may include a plurality of cutters 122 and a gripper 123 (only a plurality of cutters 122 are shown in the cutting portion 121 in FIG. 2B). That is, A plurality of cutters 122 provided on the feed roller 121 cut the electrodes into a predetermined shape and then the grippers 123 grip the cut electrodes and feed them to the feed roller portion 124 and the push belt portion 127 do.

Since the cutting portion 121 is well known to those skilled in the art, a detailed description thereof will be omitted.

The feeding roller portion 124 may be provided adjacent to the cutout portion 121. The accelerating part serves to continuously feed the cut electrode 121, accelerate the electrode, and then feed the accelerated part to the next step.

To this end, the feed roller portion 124 may include an inner ring 125 and an outer ring 126.

The inner ring 125 may include a substantially circular circumference 125a and a substantially flat string 125b. The inner ring 125 maintains a fixed state without rotation, and a vacuum region is formed through the string 125b. That is, a vacuum pipe (not shown) is connected between the string 125b and the outer ring 126, so that a vacuum region is formed between the string 125b and the outer ring 126 facing the outer ring.

The outer ring 126 surrounds the inner ring 125 and has a substantially cylindrical shape in which a plurality of through holes 126a are formed. The outer ring 126 rotates around the inner ring 125 to allow the electrode to contact the surface of the outer ring 126 by a vacuum region formed in the region facing the string 125b. Of course, since the outer ring 126 rotates at a high speed, the electrode that is in contact with the surface of the outer ring 126 can be accelerated into the next process. Here, in order to rotate the outer ring 126 at a high speed, an electric motor may be coupled to the outer ring 126. [

In this manner, the supply roller portion 124 causes the supplied electrode to contact only a part of the supply roller portion 124, and a vacuum is formed at the contact portion of the electrode, so that the electrode is supplied to the supply roller portion 124 in a vacuum Thereby accelerating in the adsorbed state. Practically, referring to FIG. 2C, the electrode can be brought into contact / close contact with only the hatched portion of the outer ring 126 of the supply roller portion 124.

The push belt portion 127 closely contacts the feed roller portion 124 to accelerate and feed the electrode to the electrode loading portion 130 without slipping. That is, when the electrode is supplied to the supply roller portion 124, the push belt portion 127 contacts the supply roller portion 124 so that the supply roller portion 124 adsorbs the electrode in vacuum, The electrode is accelerated without slipping by the frictional force and is inputted to the electrode loading unit 130.

In the drawing, reference numeral 133 is closely attached / rotated to the outer ring 126 of the supply roller portion 124 and the loading belt 133 of the electrode loading portion 130 so that the electrode can be easily put on the electrode loading portion 130 The auxiliary roller is provided.

The push belt portion 127 may include a first roller 127a, a second roller 127b, a third roller 127c, and a push belt 127d. The first and

second rollers

127a and 127b may be closely adhered to the outer ring 126 of the supply roller portion 124 while being spaced apart from each other by a predetermined distance. The third roller 127c may be spaced apart from the first and

second rollers

127a and 127b. That is, the first, second and

third rollers

127a, 127b, and 127c may be arranged in a generally triangular shape. Further, the push belt 127d may be coupled along the first, second, and

third rollers

127a, 127b, and 127c, thereby being substantially triangular in shape. In addition, the push belt 127d between the first and

second rollers

127a and 127b can be brought into close contact with the surface of the supply roller portion 124, that is, the outer ring 126.

Here, when the supply roller portion 124, that is, the outer ring 126 rotates in a substantially counterclockwise direction, the first, second and

third rollers

127a, 127b, and 127c and the push belt 127d rotate do. The electrode cut off from the cut portion 121 is supplied between the outer ring 126 of the supply roller portion 124 and the push belt 127d of the push belt portion 127 so that the electrode is continuously accelerated and the electrode loading portion 130).

3A, there is shown a graph of the time-dependent acceleration and deceleration states of the separable cutout 121 and the feed roller 124 in the electrode cutter 120 of the secondary battery according to various embodiments of the present invention, Referring to FIG. 3B, there is shown a graph of the time-dependent acceleration and deceleration states of the conventional cutting unit.

Here, the X axis means time, and the Y axis means speed. 2A to 2C, the operation of the electrode cutting and inputting apparatus 120 for a secondary battery according to the embodiment of the present invention will be described.

First, the cut portion 121 accelerates to a first speed (for example, 350 mm / s), which is an electrode feed speed, cuts the electrode at an electrode feed speed and a constant speed, . That is, the cutting portion 121 cuts the electrode to an appropriate size while moving at the same speed as the electrode feeding speed.

At this time, the feeding roller portion 124 decelerates at the first speed described above so that the cut electrode can be easily supplied to the feeding roller portion 124. [ That is, when the electrode cut by the cut portion 121 is fed to the gap between the feed roller portion 124 and the push belt portion 127, the rotation speed of the feed roller portion 124 is maintained at the feed rate Or the moving speed of the cut portion.

Then, since the cutting of the electrode by the cutting portion 121 is completed, the cut portion 121 decelerates and returns in the direction opposite to the feeding direction of the electrode. Here, the upper region around the X axis means a forward velocity, for example, and the lower region means a reverse velocity, for example.

Subsequently, the supply roller portion 124 accelerates at a second speed (for example, 700 mm / s) higher than the first speed in a state where the electrode is adsorbed by vacuum, and the electrode is loaded on the electrode loading portion 130 do. Here, the substantially second speed is the feeding speed of the loading belt 132 in the electrode loading portion 130.

At this time, the cut portion 121 returns to its original position and prepares for the next electrode cutting.

This operation is repeated so that a large number of electrodes are sequentially loaded on the electrode loading unit 130.

As described above, in the electrode cutter 120 for a secondary battery according to the embodiment of the present invention, the cutting portion 121 for cutting the electrode and the feeding roller portion 124 for accelerating and feeding the electrode are separated from each other, Cutting, accelerating and injecting processes are performed smoothly. For example, the speed of cut 121 may be approximately 0-500 mm / s, and the speed of feed roller portion 124 may be approximately 500-1000 mm / s. At this time, the required acceleration / deceleration speed of the cutting portion 121 and the feed roller portion 124 may be approximately 1 G or less. Therefore, the feed mass at the time of acceleration / deceleration of the cut portion 121 and the feed roller portion 124 becomes relatively small. In addition, since the cut electrode is vacuum-adsorbed to the supply roller portion 124, the electrode does not slip. In addition, after the electrode is cut by the cut-out portion 121, the return distance of the cut-out portion 121 is relatively short and the feed roller portion 124 continuously rotates in one direction, so that the return is unnecessary, . Here, when the vibration of the equipment becomes severe, the electrode is not put in the correct position of the electrode loading unit 130.

Meanwhile, as shown in FIG. 3B, conventionally, the cutting portion has performed cutting, acceleration, and insertion of electrodes. In this case, the amount of change in speed due to the cutting portion and the amount of change in the amount of movement due to the cut portion are calculated based on the speed change amount and the speed change amount according to the embodiment of the present invention. It can be seen that it is bigger than the shift change.

That is, conventionally, the speed of the cut portion is approximately 0 to 1000 mm / s, but the required cut / decelerated speed of the cut portion is approximately 2 G or more. Therefore, the acceleration moving mass is relatively large, and in particular, since the return distance after the electrode insertion of the cut portion is long, the vibration phenomenon of the equipment is remarkably exhibited.

In conclusion, in order to overcome the limitations of the gripping method, the electrode cutter 120 of the secondary battery according to the embodiment of the present invention may be provided with a cutter 121 instead of a discrete accelerating method by forward and backward. A continuous acceleration applying method of the electrode using the roller portion 124 is adopted.

Specifically, the electrode cutting and dosing device 120 for a secondary battery according to an embodiment of the present invention changes the cutting, acceleration and closing manner of the electrode by the cutting portion 121 so that the cutting portion 121 performs only cutting of the electrode, The amount of acceleration and the amount of deceleration of the cutout portion 121 are reduced in such a manner that the feed roller portion 124 continuously accelerates and feeds the cut electrode, thereby reducing the mechanical load and improving the mechanical load stability, Thereby reducing the number of steps on the cycle and improving the operation speed to improve the productivity.

Although the present invention has been described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

A cutting section for cutting and feeding the electrode;

A feed roller unit that receives the cut electrode from the cut unit and continuously feeds the cut electrode to the next process; And

And a push belt portion for allowing the electrode to adhere to the supply roller portion.
The method according to claim 1,

Wherein the supplying roller unit is configured to allow the supplied electrode to contact only a partial area of the supplying roller unit and to cause a vacuum to be formed at a contact part of the electrode so as to allow the electrode to be inserted into the supplying roller unit while being vacuum- Electrode cutting input device.
The method according to claim 1,

The feed roller portion

An inner ring having a circular circumferential surface and a flat string; And

And a cylindrical outer ring surrounding the inner ring and having a plurality of through holes,

Wherein the outer ring is rotated about the inner ring so that the electrode contacts the outer ring by a vacuum formed in the string, Wherein the electrode is provided with a plurality of electrodes.
The method according to claim 1,

Wherein the push belt portion is configured to bring the electrode into contact with the feeding roller portion when the electrode is supplied to the feeding roller portion,

Wherein the supply roller unit sucks the electrode by vacuum, and the electrode is inserted without slipping due to frictional force generated at this time.
The method according to claim 1,

The cutting portion accelerates at a first speed to cut the electrode, feeds the cut electrode to the feeding roller portion,

Wherein the feed roller unit accelerates the electrode at a second speed higher than the first speed and feeds the accelerated electrode to the next process.
The method according to claim 6,

Wherein the feeding roller portion decelerates at the first speed when feeding the electrode from which the cut portion is cut to the feeding roller portion.
The method according to claim 1,

The push belt portion

The first and second rollers being in close contact with the surface of the feeding roller portion in a state of being spaced apart from each other;

A third roller disposed apart from the first and second rollers; And

And a push belt coupled along the first, second and third rollers,

Wherein the push belt between the first and second rollers is in close contact with the surface of the feeding roller portion.
An electrode supply unit for supplying an electrode for a secondary battery;

The electrode cutting and feeding apparatus according to any one of claims 1 to 7, wherein the electrode is supplied from the electrode supply unit and is cut and then fed to the next step.

An electrode loading unit disposed at a rear end of the electrode cut-and-injecting apparatus to load the cut electrode;

A separator supply unit for supplying a separator to upper and lower surfaces of the electrode on the electrode loading unit, respectively;

A sealing part forming a sealing area around the separator so that the separator surrounds the electrode in a bag shape;

A separator cutting portion for cutting the sealing region of the separator to provide a single separator bag including electrodes; And

And a stack portion stacked on one side of the separator bag, the electrode having a polarity different from the polarity of the electrode.
9. The method of claim 8,

Wherein the electrode supply unit and the electrode cut-and-injecting unit form a set, and the pair includes the pair.
10. The method of claim 9,

Wherein the pair of sets operates alternately with each other so that the feeding speed of the electrode by the electrode loading part is two times higher than the feeding speed of the electrode by the set.