KR101835710B1 - Apparatus for insrting pole plate of rechargeable battery - Google Patents

Abstract

According to the present invention, an apparatus for inserting a pole plate of a rechargeable battery to prevent false winding that alignment of an electrode plate wound on a winding device is misaligned comprises: a cutting portion cutting a pole plate; a guiding portion disposed between a supply roll and the cutting portion to guide the pole plate to the cutting portion; a support frame supporting the cutting portion and the guiding portion together; a reference frame spaced apart from the support frame; and a tilt adjusting portion disposed between the support frame and the reference frame to adjust a tilt of the support frame with respect to a plane of the reference frame. Therefore, the apparatus minimizes a defect of an electrode assembly and can manufacture the electrode assembly with good quality.

Description

[0001] APPARATUS FOR INSRTING POLE PLATE OF RECHARGEABLE BATTERY [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a secondary battery electrode plate insert device, and more particularly, to a secondary battery electrode plate insert device for guiding an electrode plate with a winding device for winding an electrode plate in a secondary battery manufacturing device.

Generally, a secondary battery is a battery which can be repeatedly used through a discharge process of converting chemical energy into electrical energy and a charging process in the reverse direction. Examples of the secondary battery include a nickel-cadmium (Ni-Cd) battery, a nickel- A lithium-metal battery, a lithium-ion (Ni-Ion) battery, and a lithium-ion 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.

BACKGROUND OF THE INVENTION [0002] Recently, secondary batteries have attracted attention as energy sources that are widely used in IT products, automobiles, and energy storage. In the field of IT products, secondary batteries can be used continuously for a long time, are required to be reduced in size and weight, and in the automobile field, they are required to have high output, durability, and stability for eliminating the risk of explosion. In the energy storage field, surplus power produced by wind power, solar power generation, and the like is stored. As it is used in a fixed type, a secondary battery of a more relaxed condition can be applied.

In particular, lithium secondary batteries have been in research and development since the early 1970s. Lithium ion batteries using carbon as a cathode instead of lithium metal have been developed and commercialized in 1990, and have been used for more than 500 cycles and short charging times of 1 to 2 hours It has the highest sales growth rate among secondary batteries and can be lightened by 30 ~ 40% less than nickel-hydrogen battery. In addition, the lithium secondary battery has the highest unit cell voltage (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, a positive electrode plate, a negative electrode plate, and a separator (separator) interposed therebetween are stacked or wound.

A secondary battery manufacturing apparatus for manufacturing such an electrode assembly includes a supply roller for supplying a positive electrode plate, a negative electrode plate and a separator, a winder for winding the electrode plate, and an electrode plate disposed between the supply roller and the winder to guide the electrode plate to the winder Device.

Among them, the electrode plate insert device may include a cutting device for cutting the electrode plate, and a device for clamping the tip end of the cut electrode plate and guiding the leading end of the electrode plate to the winding device.

However, if the mechanical alignment state of the secondary battery electrode plate insert is changed, the alignment of the positive electrode plate, the negative electrode plate, and the separator may be distorted and a comb may be wound.

Korean Registered Patent No. 1359430 (Announcement of Mar. 10, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a secondary battery pole plate insert device which prevents a pick-up phenomenon in which an electrode plate wound on a winding machine is misaligned.

A secondary battery electrode plate insert device according to the present invention, which is disposed between a supply roller for supplying an electrode plate of a secondary battery and a winder for winding the electrode plate and guides the electrode plate to the winder, comprises a cutting portion for cutting the electrode plate, A guide frame disposed between the roll and the cutting unit to guide the plate to the cutting unit, a support frame for supporting the cutting unit and the guide unit together, a reference frame spaced apart from the support frame, And a tilt adjusting unit disposed between the support frame and the tilt adjusting unit to adjust the tilt of the support frame with respect to the plane of the reference frame.

Wherein the secondary battery electrode plate insert device includes a joint connecting the support frame and a center portion of the reference frame, the joint having a first joint formed with a hollow and fastened to the reference frame, and an outer diameter smaller than the inner diameter of the hollow And a second joint coupled to the support frame and inserted into the first joint.

The second joint may be fastened to the first joint by a nut so that a female screw is formed and movable in the longitudinal direction.

The tilt adjusting unit may include an eccentric cam disposed between the base support frame and the reference frame.

The eccentric cams may be arranged in front, rear, left, and right, respectively, with respect to the feeding direction of the electrode plate.

The secondary battery electrode plate insert device may further include a first transfer unit installed in the support frame and linearly driven in a direction in which the cutting unit and the guide unit are transported together with the electrode plate.

The secondary battery electrode plate insert device may further include a second transfer unit for linearly driving the guide unit in a direction in which the electrode plate is transported, separately from the first transfer unit.

The secondary battery electrode plate insert device according to the present invention can prevent the winding of the electrode plate wound on the winding machine due to the misalignment of the electrode plate, thereby minimizing defects of the electrode assembly and manufacturing an electrode assembly of a good product.

1 is a block diagram briefly showing an apparatus for manufacturing a secondary battery according to the present embodiment.
2 is a perspective view illustrating a secondary battery electrode plate insert device according to the present embodiment.
3 is an exploded perspective view showing a secondary battery electrode plate insert device according to the present embodiment.
4 is a cross-sectional perspective view showing a connection relationship between the reference frame and the support frame of the secondary battery electrode plate insert apparatus according to the present embodiment.

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 the present specification and the configurations shown in the drawings are only examples of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents and modifications may be made thereto .

Hereinafter, a secondary battery electrode plate insert device according to the present embodiment will be described with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a secondary battery manufacturing apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view of a secondary battery pole insert apparatus installed on a support plate of the secondary battery manufacturing apparatus according to the present embodiment.

1 and 2, the apparatus for manufacturing a secondary battery 100 according to the present embodiment includes feed rollers 10, 30 and 50 for feeding the electrode plates 1 and 3 and the separator 5, 3, a take-up winder 70 for winding up the separator 5, and a secondary battery pole plate inserting device 200.

The secondary battery manufacturing apparatus 100 may include a plate support plate 110 for supporting the supply rollers 10, 30 and 50, the winder 70 and the secondary battery pole insert 200.

FIG. 3 is an exploded perspective view showing a secondary battery electrode plate insert device according to the present embodiment, and FIG. 4 is a cross-sectional perspective view showing a connection relationship between a reference frame and a support frame of the secondary battery electrode plate insert device according to the present embodiment.

3 and 4, the secondary battery electrode plate insert device 200 is disposed between the supply rollers 10 and 30 for supplying the electrode plates 1 and 3 and the take-up device 70, A reference frame 210 to be supported and a support frame 230 disposed on the upper side of the reference frame 210. The reference frame 210 serves as a base for installing the secondary battery pole plate inserting apparatus 200. The reference frame 210 forms a reference surface for adjusting the inclination of the support frame 230. The support frame 230 supports the cutting portion 270 and the guide portion 290, which will be described later.

The center portion of the reference frame 210 and the support frame 230 are connected to each other by a joint 250. The joint 250 includes a first joint 251 formed with a hollow 251a and fastened to the reference frame 210 and a second joint 251 inserted into the first joint 251 with an outer diameter smaller than the inner diameter of the hollow 251a, And a second joint 253 fastened to the joint 251.

The second joint 253 is provided with a female thread on the lower end of the second joint 253 to prevent the second joint 253 inserted into the first joint 251 from coming off. 251a are fastened and connected to the first joint 251. It is preferable that the second joint 253 is coupled to the first joint 251 so as to be movable up and down so that the inclination of the support frame 230 relative to the reference frame 210 can be adjusted.

When the secondary battery electrode plate insert 200 is installed, the joint 250 allows the reference frame 210 and the support frame 230 to be roughly aligned. That is, when the support frame 230 is connected to the reference frame 210 after the reference frame 210 is fastened to the support plate 110, the second joint 253 is inserted into the hollow 251a of the first joint 251, The reference frame 210 and the support frame 230 can be roughly aligned.

The secondary battery pole insert 200 may include a cutting portion 270, a guide portion 290, and a tilt adjusting portion 310.

The cutting portion 270 is disposed between the feed rollers 10, 30 and the winder 70. The cutting portion 270 may be a combination of a pair of cutting blades 271 for cutting the electrode plates 1 and 3 and a cylinder 273 for driving at least one of the pair of cutting blades 271. The cutting portion 270 cuts the electrode plates 1, 3 wound around the winder 70.

The guide portion 290 is disposed between the feed rollers 10, 30 and the cutting portion 270. The guide portion 290 may include a clamping unit 291 for clamping the tip of the electrode plates 1, 3. The guiding portion 290 has a pair of rollers 71 (see Fig. 1) provided on the take-up machine 70 by passing the pole plates 1, 3 cut by the cutting portion 270 between the cutting portions 270. ).

The cutting portion 270 and the guide portion 290 are supported by the support frame 230. In order to guide the polar plates 1 and 3 cut by the cutting portion 270 to the winder 70, The first conveying unit 410 may be provided to linearly feed the cutting unit 270 and the guide unit 290 in the direction in which the electrode plates 1 and 3 are fed. The first conveying unit 410 may be a linear actuator including a combination of a linear guide, a reel block, and a linear motor.

The linear block of the first transfer part 410 may be provided with a second transfer part 430 for linearly transferring the guide part 290 in a direction in which the polar plates 1 and 3 are fed apart from the cutting part 270 . The second transfer unit 430 may be a linear actuator including a combination of a linear guide, a reed block, and a linear motor.

The guide portion 290 guides the electrode plates 1 and 3 to the winder 70 while the electrode plates 1 and 3 are fed in the direction in which the electrode plates 1 and 3 are fed and the cutting portion 270 rotates the electrode plates 1 and 3 Cut it. Therefore, the cutting portion 270 and the guide portion 290 must be precisely aligned with respect to the conveying direction of the electrode plates 1 and 3 and the plane of the electrode plates 1 and 3 being conveyed before the combs of the electrode plates 1 and 3 It is possible to prevent winding.

The tilt adjusting unit 310 may be configured to precisely adjust the inclination of the supporting frame 230 supporting the cutting unit 270 and the guide unit 290 in order to prevent the wiping of the electrode plates 1, do. That is, the tilt adjusting unit 310 may include a plurality of eccentric cams 311 disposed between the reference frame 210 and the support frame 230. The plurality of eccentric cams 311 are disposed at the front, back, left, and right, respectively, with respect to the direction in which the polar plates 1 and 3 are fed, so that the positions of the cutting portion 270 and the guide portion 290 can be precisely adjusted .

Hereinafter, a method of adjusting the tilt of the secondary battery electrode plate insert according to the present embodiment will be described.

First, the first joint 251 is fastened to the upper surface of the reference frame 210.

Subsequently, the reference frame 210 is fastened to the support plate 110. Of course, since the pole plates 1 and 3 form a reference surface for adjusting the tilt, the reference frame 210 can be formed in the same plane as the pole plates 1 and 3 in consideration of the direction in which the pole plates 1 and 3 are fed, (1, 3).

When the reference frame 210 is installed on the support plate 110, the support frame 230 is connected to the reference frame 210.

That is, the second joint 253 is fastened to the lower surface of the support frame 230, and a plurality of eccentric cams 311 are provided. The second joint 253 is inserted into the hollow 251a of the first joint 251 and the nut 253a is fastened to the female screw portion formed in the second joint 253 to connect the support frame 230 to the reference frame 210 ).

The outer diameter of the second joint 253 is smaller than the inner diameter of the hollow 251a of the first joint 251 and the second joint 253 is moved in the vertical direction with respect to the first joint 251 The second joint 253 is separated from the first joint 251 because it is connected to the first joint 251. Therefore, the support frame 230 can be moved in a plane and up and down with respect to the reference frame 210, so that the inclination of the support frame 230 with respect to the reference frame 210 is adjustable.

Subsequently, the rotational angles of the plurality of eccentric cams 311 are adjusted in consideration of the direction in which the electrode plates 1 and 3 are fed and the plane of the electrode plates 1 and 3 to be fed. The inclination of the support frame 230 with respect to the reference frame 210 can be adjusted by adjusting the rotation angle of the plurality of eccentric cams 311. That is, a plurality of eccentric cams 311 arranged in front, rear, left, and right respectively with respect to the transport direction of the electrode plates 1 and 3 are rotated to adjust the inclination of the support frame 230 with respect to the reference frame 210 .

After the inclination of the support frame 230 is precisely adjusted by using the plurality of eccentric cams 311 as described above, the cutting portion 270 and the guide portion 290 can be attached to the support frame 230. Of course, before adjusting the inclination of the support frame 230, the cutting portion 270 and the guide portion 290 are first installed

Thereafter, the plurality of eccentric cams 311 are precisely adjusted according to the feeding direction of the electrode plates 1, 3 fed from the feeding rollers 10, 30 to the winder 70 and the plane states of the electrode plates 1, , It is possible to prevent the electrode plates 1 and 3 from being wound.

As described above, the secondary cell electrode plate insert 200 according to the present embodiment can precisely adjust the inclination of the cutting portion 270 and the guide portion 290 by using a plurality of eccentric cams 311. Therefore, the secondary battery electrode insert 200 according to the present embodiment can prevent the electrode plates 1 and 3 from being wound toward the take-up unit 70, thereby producing a high-quality electrode assembly.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

1, 3: Plate
5: Membrane
10, 20, 30: Feed rollers
100: Secondary battery manufacturing apparatus
110: Support plate
200: Secondary battery electrode plate insert device
210: Reference frame
230: Support frame
250: Joint
251: First joint
251a: hollow
253: second joint
253a: nut
270:
290:
310:
311: eccentric cam

Claims (7)

A secondary battery electrode plate insert device arranged between a supply roller for supplying an electrode plate of a secondary battery and a winder for winding the electrode plate, and guiding the electrode plate to the winding machine,
A cutting portion for cutting the electrode plate;
A guide portion disposed between the supply roll and the cutting portion and guiding the electrode plate to the cutting portion;
A support frame for supporting the cutting part and the guide part together;
A reference frame spaced from the support frame;
And a tilt adjuster disposed between the support frame and the reference frame to adjust a tilt of the support frame with respect to a plane of the reference frame.
The method according to claim 1,
And a joint connecting the support frame and a center portion of the reference frame,
The joint
A first joint formed with a hollow and fastened to the reference frame;
And a second joint having an outer diameter smaller than the inner diameter of the hollow and connected to the support frame and inserted into the first joint.
3. The method of claim 2,
Wherein the second joint is fastened to the first joint by a nut so that the second joint is formed with a female thread and is movable in the longitudinal direction.
The method according to claim 1,
The tilt adjusting unit
And an eccentric cam disposed between the support frame and the reference frame.
5. The method of claim 4,
Wherein the eccentric cams are disposed in front, rear, left, and right, respectively, with respect to the feeding direction of the electrode plate.
The method according to claim 1,
Further comprising a first conveying unit installed in the support frame and linearly driven in a direction in which the electrode plate is conveyed together with the cutting unit and the guide unit.
The method according to claim 6,
Further comprising a second transfer unit for linearly driving the guide unit in a direction in which the electrode plate is transported, separately from the first transfer unit.

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