Title of Invention: Secondary Battery Rolling Device
technical field
[One]
Cross Citation with Related Applications
[2]
This application claims the benefit of priority based on Korean Patent Application No. 10-2020-0021208 dated February 20, 2020, and all contents disclosed in the documents of the Korean patent application are incorporated as a part of this specification.
[3]
technical field
[4]
The present invention relates to a secondary battery rolling apparatus, and more particularly, to a secondary battery rolling apparatus capable of minimizing the thickness of a secondary battery.
background
[5]
In general, a secondary battery refers to a battery capable of charging and discharging unlike a primary battery that cannot be charged, and such secondary batteries are widely used in high-tech electronic devices such as phones, notebook computers, and camcorders.
[6]
The secondary battery is classified into a can-type secondary battery in which the electrode assembly is embedded in a metal can, and a pouch-type secondary battery in which the electrode assembly is embedded in a pouch.
[7]
On the other hand, the pouch-type secondary battery includes an electrode assembly, an electrode lead coupled to the electrode assembly, and a pouch for accommodating the electrode assembly in a state in which the tip of the electrode lead is withdrawn to the outside. And the electrode assembly has a structure in which electrodes and separators are alternately stacked, and the pouch includes a accommodating part accommodating the electrode assembly and a sealing part sealing the accommodating part hermetically.
[8]
Here, in the pouch-type secondary battery, an empty space is formed due to a gap between the electrode assembly and the receiving portion of the pouch, and the empty space between the electrode assembly and the receiving portion is subjected to a sealing process to increase the thickness of the secondary battery. .
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[9]
The present invention was invented to solve the above problems, and the present invention can minimize the thickness of the secondary battery by removing the empty space between the electrode assembly and the receiving part of the pouch, and in particular, the entire surface of the secondary battery. An object of the present invention is to provide a secondary battery rolling apparatus capable of uniformly rolling the entire thickness of the secondary battery.
means of solving the problem
[10]
The present invention for achieving the above object is a secondary battery rolling apparatus for correcting the appearance of a secondary battery, a jig having a bottom plate and one or more correction molds disposed on the upper surface of the bottom plate and into which the secondary battery is inserted absence; and a pressing member provided on the jig member and configured to correct the external shape of the secondary battery to match the external shape of the correction mold by pressing the secondary battery inserted into the correction mold, wherein the pressing member is inserted into the correction mold a support piece for uniformly supporting the entire upper surface of the secondary battery to be used, and for correcting the external shape of the secondary battery by pressing the entire upper surface of the secondary battery inserted into the correction mold with a uniform force by the transmitted force; and a pressing piece that transmits a force such that the support piece presses the entire upper surface of the secondary battery inserted into the correction mold with a uniform force.
[11]
The pressure piece is provided as a pressure roller, and the pressure roller may transmit a force to the support piece while moving from one side of the upper surface of the support piece to the other side.
[12]
The pressing member may further include a guide means for guiding the pressing piece to move from one side of the upper surface of the support piece to the other side.
[13]
The guide means includes a guide piece having a guide hole formed from one side of the upper surface to the other side of the support piece, and is provided at both ends of the pressing piece and coupled to the guide hole of the guide piece along the guide hole from the upper surface side of the support piece. It may include a guide projection that moves to the other side.
[14]
The support piece may be moved to the upper or lower portion of the bottom plate by means of elevating means.
[15]
The lifting means may be provided on the upper surface of the bottom plate, and may be provided as a lifting rod to which the support piece is movably coupled in the vertical direction.
[16]
The lifting means may include a locking piece that is provided on the lifting rod and adjusts a descending height of the support piece while the support piece is supported.
[17]
The locking piece may adjust the descending height of the support piece while rising or descending along the lifting rod while being screwed to the screw thread formed on the main surface of the lifting rod.
[18]
The correction mold may be detachably coupled to the bottom plate.
[19]
The correction mold may include an assembly mold, and the assembly mold may reduce the size of the insertion space of the correction mold by the thickness of the assembly mold while being coupled to the insertion space of the correction mold into which the secondary battery is inserted.
[20]
The assembly molds are provided in plurality having different sizes, and the plurality of assembly molds having different sizes are disposed in the insertion space of the correction molds, and may overlap to decrease in size.
[21]
A plurality of the assembly molds may have the same thickness.
Effects of the Invention
[22]
The secondary battery rolling apparatus of the present invention includes a jig member and a pressing member, wherein the jig member includes a bottom plate and a correction mold, and the pressing member includes a support piece and a pressing piece. Due to such a feature, it is possible to minimize the increase in the thickness of the secondary battery by minimizing the empty space between the electrode assembly and the pouch of the secondary battery. have.
[23]
In addition, in the secondary battery rolling apparatus of the present invention, the pressing piece is characterized in that it is provided as a pressing roller. Due to such a feature, the pressure roller may transmit a uniform force to the entire surface of the support piece, and accordingly, the support piece may uniformly press the entire surface of the secondary battery.
[24]
In addition, in the secondary battery rolling apparatus of the present invention, the pressing member is characterized in that it further includes a guide means. Due to such a feature, the pressing piece can be stably moved from one side of the upper surface of the support piece to the other side, and as a result, convenience and efficiency of the operation can be increased.
[25]
In addition, in the secondary battery rolling apparatus of the present invention, the pressing member is characterized in that it further includes a lifting means. Due to such a feature, the support piece can be moved in the vertical direction with respect to the bottom plate, and as a result, the support piece can be stably pressed.
[26]
In addition, in the secondary battery rolling apparatus of the present invention, the lifting means is characterized in that it further includes a locking piece. Due to such a feature, it is possible to adjust the descending height of the support piece, and accordingly, it is possible to prevent the secondary battery from being excessively rolled by the support piece, thereby preventing deformation and damage of the secondary battery in advance.
[27]
In addition, in the secondary battery rolling apparatus of the present invention, the engaging piece is characterized in that it is screwed to the lifting rod of the lifting means. Due to such a feature, the lowering height of the supporting piece can be finely adjusted while the engaging piece rises or descends along the lifting rod during rotation.
[28]
In addition, in the secondary battery rolling apparatus of the present invention, the correction mold further includes a plurality of assembly molds having different sizes, and due to such a feature, secondary batteries of various sizes can be rolled, resulting in use can increase the efficiency of
Brief description of the drawing
[29]
1 is a perspective view showing a secondary battery of the present invention.
[30]
Figure 2 is an exploded perspective view showing the secondary battery rolling apparatus according to the first embodiment of the present invention.
[31]
3 is a front view showing the secondary battery rolling apparatus according to the first embodiment of the present invention.
[32]
Fig. 4 is a cross-sectional view of Fig. 3;
[33]
5 is a cross-sectional view showing a state of use of the secondary battery rolling apparatus according to the first embodiment of the present invention.
[34]
6 is a perspective view illustrating a secondary battery rolling apparatus according to a second embodiment of the present invention.
[35]
7 is a cross-sectional view of FIG.
[36]
8 is a cross-sectional view showing a secondary battery rolling apparatus according to a third embodiment of the present invention.
[37]
Fig. 9 is a partially enlarged view of Fig. 8;
[38]
10 is a perspective view illustrating a secondary battery rolling apparatus according to a fourth embodiment of the present invention.
[39]
11 is a cross-sectional view of FIG. 10;
[40]
12 is a cross-sectional view showing a secondary battery rolling apparatus according to a fifth embodiment of the present invention.
Best mode for carrying out the invention
[41]
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.
[42]
[Secondary battery of the present invention]
[43]
Referring to FIG. 1 , the secondary battery 10 of the present invention includes an electrode assembly 11 and a pouch 12 accommodating the electrode assembly, wherein the pouch 12 accommodates the electrode assembly 11 . and a sealing portion 12b for sealing the portion 12a and the accommodating portion 12a.
[44]
Meanwhile, the thickness of the secondary battery 10 of the present invention may be increased while an empty space is formed between the electrode assembly 11 and the receiving portion 12a of the pouch 12 .
[45]
In order to solve the above problems, the secondary battery 10 of the present invention removes or minimizes the empty space between the electrode assembly 11 and the receiving part 12a of the pouch 12 through a rolling process, at this time The secondary battery rolling device of the application is used.
[46]
That is, the secondary battery rolling device of the present application uniformly presses the entire surface of the secondary battery, thereby uniformly adjusting the overall thickness of the secondary battery, and as a result, the receiving part 12a of the electrode assembly 11 and the pouch 12 . ) can be eliminated or minimized.
[47]
Hereinafter, an embodiment of the secondary battery rolling device of the present application will be described in detail with reference to the accompanying drawings.
[48]
[Secondary battery rolling apparatus according to the first embodiment of the present invention]
[49]
The secondary battery rolling apparatus 100 according to the first embodiment of the present invention corrects the external shape by rolling the secondary battery as shown in FIGS. 2 to 5, and a jig member ( 110) and a pressing member 120 for uniformly pressing the entire upper surface of the secondary battery 10 on which the jig member 110 is disposed.
[50]
Jig member
[51]
The jig member 110 includes a bottom plate 111 and one or more correction molds 112 disposed on the upper surface of the bottom plate 111 and correcting the external shape of the secondary battery 10 .
[52]
The bottom plate 111 has a long square plate shape, and a correction mold 112 is disposed on the upper surface.
[53]
The correction mold 112 has a rectangular frame shape, and a plurality of them are disposed on the upper surface of the bottom plate 111 at regular intervals. That is, in the correction mold 112 , the receiving part 12a of the pouch 12 is inserted into the insertion space formed in the center, and the sealing part 12b of the pouch 12 is supported on the upper outer circumferential surface.
[54]
The jig member 110 having such a structure can effectively arrange a plurality of secondary batteries 10 .
[55]
pressing member
[56]
The pressing member 120 is for pressing the secondary battery inserted into the jig member, and uniformly supports the entire upper surface of the secondary battery 10 inserted into the correction mold 112, and the correction is performed by the transmitted force. A support piece 121 for correcting the external shape of the secondary battery 10 by pressing the entire upper surface of the secondary battery 10 inserted into the mold 112 with a uniform force, and the support piece 121 is used for the correction. It includes a pressing piece 122 that transmits a force to press the entire upper surface of the secondary battery 10 inserted into the mold 112 with a uniform force.
[57]
The support piece 121 has the same size as the bottom plate 111 , is made of a transparent or translucent material, is placed on the upper surface of the correction mold 112 , and is inserted into the correction mold 112 . Support the upper surface of (10). At this time, the support piece 121 is formed in a flat horizontal plane to uniformly support the entire upper surface of the secondary battery 10. 112) direction and pressurizes the entire upper surface of the secondary battery 10 with a uniform force. Accordingly, the receiving portion 12a of the pouch 12 is rolled between the support piece 121 and the bottom plate 111 , and the receiving portion 12a of the pouch 12 is in close contact with the electrode assembly 11 so that the receiving portion The empty space between the 12a and the electrode assembly 11 can be removed, and at the same time, the accommodating part 12a of the pouch 12 is transformed into the shape of the insertion space of the correction mold 112 to uniformly shape the appearance of the secondary battery. can be corrected. In particular, the entire thickness of the secondary battery 10 can be uniformly adjusted while the receiving portion 12a of the pouch 12 is uniformly pressed.
[58]
The pressure piece 122 is provided as a pressure roller, and the pressure roller transmits a force so that the support piece 121 is pressed while rotating and simultaneously moving from one side of the upper surface of the support piece 121 to the other side. Here, the pressing piece 122 is provided to correspond to the width direction length of the support piece 121 , and thus the width direction contact portion of the support piece 121 that is in close contact with the pressing piece 122 can be simultaneously pressed. While the pressing piece 122 moves in the same state, it is possible to transmit the same force to the entire longitudinal direction of the support piece 121 .
[59]
As such, the pressing piece 122 is in rolling contact with the surface of the support piece, and thus can transmit a uniform force to the entire surface of the support piece.
[60]
The pressing member 120 having such a configuration can press the entire surface of the secondary battery inserted into the correction mold 112 with a uniform force, and as a result, the entire thickness of the secondary battery 10 can be uniformly adjusted ( see Fig. 5).
[61]
Therefore, the secondary battery rolling apparatus 100 of the present invention can remove the empty space between the pouch and the electrode assembly, and can minimize the increase in the thickness of the secondary battery. In particular, the secondary battery by rolling the entire surface of the secondary battery evenly thickness can be equalized.
[62]
Hereinafter, a secondary battery pressurizing method according to a first embodiment of the present invention will be described.
[63]
First, the secondary battery 10 is disposed on the support member 110 . That is, the secondary battery 10 is inserted into the seating space of the correction mold 112 provided on the bottom plate 111 of the support member 110 . Then, the receiving part 12a of the pouch 12 included in the secondary battery 10 is joined to the insertion space of the correction mold 112 , and the sealing part 12b of the pouch 12 is placed on the upper surface of the correction mold 112 . are placed
[64]
In this state, the secondary battery 10 disposed on the support member 110 is pressed through the pressing member 120 . That is, when the support piece 121 of the pressing member 120 is disposed on the upper surface of the correction mold 112 , the entire upper surface of the secondary battery 10 is supported by the lower surface of the support piece 121 . Next, the pressing piece 122 of the pressing member 120 is positioned on one side of the upper surface of the support piece 121 , and then the pressing piece 122 is pressed in the direction of the support piece 121 and the other side of the support piece 121 at the same time. move in the direction Then, as the pressing piece 122 moves, a uniform force is transmitted to the entire surface of the support piece 121, and the support piece 121 presses the entire surface of the secondary battery 10 with a uniform force through the transmitted force. The secondary battery 10 is rolled. At this time, the rolled secondary battery 10 is deformed to fit the insertion space of the correction mold 112 and is reduced in thickness, and in particular, the empty space can be removed while the receiving part of the pouch and the electrode assembly are in close contact with each other.
[65]
Hereinafter, in describing another embodiment of the present invention, the same reference numerals are used for the reference numerals having the same functions as those of the above-described embodiment, and overlapping descriptions will be omitted.
[66]
[Secondary battery rolling apparatus according to the second embodiment of the present invention]
[67]
As shown in FIGS. 6 and 7 , the secondary battery rolling apparatus 100A according to the second embodiment of the present invention includes a pressing member 120 , wherein the pressing member 120 includes a support piece 121 and A pressing piece 122 is included.
[68]
On the other hand, the pressing member 120 further includes a guide means for guiding the pressing piece 122 to constantly move from one side of the upper surface of the support piece 121 to the other side, and the guide means is the pressing piece 122 . ) can be moved to the upper surface of the support piece 121 more stably.
[69]
For example, the guide means includes a guide piece 123 having a guide hole 123a formed from one side of the upper surface to the other side of the support piece 121 , and is provided at both ends of the pressing piece 12 and the guide It includes a guide projection 122a coupled to the guide hole 123a of the piece 123 and moving from one side of the upper surface of the support piece 121 to the other side along the guide hole 123a.
[70]
That is, the pressing piece 122 constantly moves from one side of the upper surface of the support piece 121 to the other along the guide piece 123 , and accordingly, the pressing piece 122 always exerts a uniform force on the support piece 121 . and a uniform portion can be pressurized, and as a result, the appearance of the secondary battery rolled by the secondary battery rolling apparatus can be equally corrected.
[71]
[Secondary battery rolling apparatus according to the third embodiment of the present invention]
[72]
As shown in FIGS. 8 and 9 , the secondary battery rolling apparatus 100 according to the third embodiment of the present invention includes a pressing member 120 , wherein the pressing member 120 includes a support piece 121 and A pressing piece 122 is included.
[73]
On the other hand, the support piece 121 vertically moves in the vertical direction with respect to the bottom plate 111 by the lifting means.
[74]
That is, the lifting means is provided with a lifting rod 113 extending upwardly on the upper surface of the bottom plate 111 and movably coupled to the support piece 121 in the vertical direction when viewed in FIG. 8 . . Accordingly, the elevating means can increase the bondability of the support piece 121 and the bottom plate 111, and can prevent the support piece 121 from flowing forward, backward, left and right. In particular, the support piece 121 may be vertically moved in the vertical direction.
[75]
Meanwhile, the lifting means includes a locking piece 114 provided on the lifting rod 113 and adjusting the descending height of the support piece 121 while the support piece 121 is supported.
[76]
That is, when the engaging piece 114 is coupled to the lifting rod 113, the support piece 121 is supported by the engaging piece 114 while descending along the lifting rod 113, and, accordingly, the support piece ( 121) is stopped without descending any more, and as a result, the descending height of the support piece 121 may be limited.
[77]
In particular, the engaging piece 114 rises or descends along the lifting rod while being screwed to the screw thread formed on the main surface of the lifting rod, and accordingly, the position of the engaging piece 114 can be easily adjusted, and in particular, the lowering of the support piece. The height can be adjusted more precisely.
[78]
[Secondary battery rolling apparatus according to the fourth embodiment of the present invention]
[79]
As shown in FIGS. 10 and 11 , the secondary battery rolling apparatus 100C according to the fourth embodiment of the present invention includes a support member 110 , wherein the support member 110 includes a bottom plate 111 and It includes a correction mold 112 .
[80]
Here, the correction mold 112 includes an assembly mold, and the assembly mold is coupled to the insertion space of the correction mold 112 into which the secondary battery 10 is inserted. The size can be reduced by the thickness of the assembly frame. Accordingly, the secondary batteries 10 of various sizes can be inserted into the correction mold 112 .
[81]
In particular, the assembly frame may be provided in plurality having different sizes. For example, three assembly molds 112a, 112b, and 112c having different sizes are disposed in the insertion space of the correction mold 112, and overlap to decrease in size inward, and accordingly, the correction mold 112 The insertion space can be adjusted more precisely.
[82]
On the other hand, the assembly molds having different sizes have the same thickness, and accordingly, the inner space area of ​​the compensating mold can be effectively calculated and adjusted according to the area of ​​the receiving part of the pouch.
[83]
[Secondary battery rolling apparatus according to the fifth embodiment of the present invention]
[84]
As shown in FIG. 12 , the secondary battery rolling apparatus 100C according to the fifth embodiment of the present invention includes a support member 110 , wherein the support member 110 includes a bottom plate 111 and a correction mold. (112).
[85]
Here, the correction mold 112 is detachably coupled to the bottom plate 111 . That is, a coupling protrusion 111a is formed on the bottom plate 111 , and a coupling groove 112d coupled to the coupling protrusion 111a is formed in the correction mold 112 .
[86]
Accordingly, the correction mold can be attached to and detached from the bottom plate through the coupling protrusion 111a and the coupling groove 112d.
[87]
The scope of the present invention is indicated by the claims to be described later rather than the above detailed description, and various embodiments derived from the meaning and scope of the claims and their equivalent concepts are possible.
[88]
[Explanation of code]
[89]
100: secondary battery pressurization device
[90]
110: jig member
[91]
111: bottom plate
[92]
112: correction mold
[93]
113: lifting bar
[94]
114: jam piece
[95]
120: pressing member
[96]
121: support piece
[97]
122: press piece
[98]
122a: guide projection
[99]
123: guide
[100]
123a: guide hole
Claims
[Claim 1]
A secondary battery rolling apparatus for correcting an external shape of a secondary battery, comprising: a bottom plate and a jig member disposed on an upper surface of the bottom plate and provided with one or more correction molds into which the secondary battery is inserted; and a pressing member provided on the jig member and configured to correct the external shape of the secondary battery to match the external shape of the correction mold by pressing the secondary battery inserted into the correction mold, wherein the pressing member is inserted into the correction mold a support piece for uniformly supporting the entire upper surface of the secondary battery to be used, and for correcting the external shape of the secondary battery by pressing the entire upper surface of the secondary battery inserted into the correction mold with a uniform force by the transmitted force; and a pressing piece that transmits a force such that the support piece presses the entire upper surface of the secondary battery inserted into the correction mold with a uniform force.
[Claim 2]
The secondary battery rolling apparatus according to claim 1, wherein the pressing piece is provided as a pressure roller, and the pressure roller transmits a force to the support piece while moving from one side of the upper surface of the support piece to the other side.
[Claim 3]
The secondary battery rolling apparatus according to claim 1, wherein the pressing member further comprises a guide means for guiding the pressing piece to move from one side of the upper surface of the supporting piece to the other side.
[Claim 4]
The method according to claim 3, wherein the guide means includes a guide piece having a guide hole formed from one side of the upper surface to the other side of the support piece, and is provided at both ends of the pressing piece and is coupled to the guide hole of the guide piece along the guide hole. A secondary battery rolling apparatus including a guide projection moving from one side of the upper surface of the support piece to the other side.
[Claim 5]
The secondary battery rolling apparatus according to claim 1, wherein the support piece is moved to an upper or lower portion of the bottom plate by a lifting means.
[Claim 6]
The secondary battery rolling apparatus according to claim 5, wherein the lifting means is provided on an upper surface of the bottom plate and is provided with a lifting rod to which the support piece is movably coupled in a vertical direction.
[Claim 7]
The secondary battery rolling apparatus according to claim 6, wherein the lifting means includes a locking piece provided on the lifting rod and adjusting a descending height of the support piece while the support piece is supported.
[Claim 8]
The secondary battery rolling apparatus according to claim 7, wherein the locking piece is screwed to a screw thread formed on a main surface of the lifting rod and ascends or descends along the lifting rod to adjust a descending height of the support piece.
[Claim 9]
The secondary battery rolling apparatus according to claim 1, wherein the correction mold is detachably coupled to the bottom plate.
[Claim 10]
The thickness of the assembling mold according to claim 1, wherein the correction mold includes an assembly mold, and the assembly mold is coupled to an insertion space of the correction mold into which the secondary battery is inserted, and the size of the insertion space of the correction mold is determined by the thickness of the assembly mold. A secondary battery rolling device that reduces as much as possible.
[Claim 11]
The secondary battery rolling apparatus according to claim 10, wherein the assembly molds are provided in plurality having different sizes, and the plurality of assembly molds having different sizes are disposed in the insertion space of the correction mold, and overlap in size to decrease inward. .
[Claim 12]
The secondary battery rolling apparatus according to claim 11, wherein the plurality of assembly molds have the same thickness.