Title of the invention: Battery cell flexible printed circuit board bending device and bending method using same
technical field
[One]
This application claims the benefit of priority based on Korean Patent Application No. 2019-0144758 on November 13, 2019, and all contents disclosed in the literature of the Korean patent application are incorporated as a part of this specification.
[2]
The present invention relates to a battery cell flexible printed circuit board bending apparatus and a bending method using the same, and more particularly, to a bending apparatus capable of accurately and rapidly bending a battery cell flexible printed circuit board and a bending method using the same will be.
background
[3]
As technology development and demand for mobile devices such as cell phones, laptops, camcorders, and digital cameras increase, technologies related to rechargeable batteries that can be charged and discharged are becoming active. In addition, secondary batteries are applied to electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (P-HEVs), etc. as an alternative energy source for fossil fuels that cause air pollutants. The need for development is increasing day by day.
[4]
Currently commercialized secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries do not have much memory effect compared to nickel-based secondary batteries, so charging and discharging are possible freely. , the self-discharge rate is very low and the energy density is high.
[5]
This lithium secondary battery mainly uses a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. It consists of an exterior material sealed and accommodated together with the electrolyte, that is, a battery case.
[6]
According to the shape of the battery case, the secondary battery is classified into a cylindrical battery and a prismatic battery in which the electrode assembly is embedded in a cylindrical or prismatic metal can, and a pouch-type battery in which the electrode assembly is embedded in a pouch-type case of an aluminum laminate sheet. can
[7]
Meanwhile, FIG. 1 is a schematic diagram of a battery cell before bending the flexible printed circuit board. Flexible Printed Circuit Board (FPCB) refers to a circuit board formed by forming a flexible film as an outer layer on metal foil (especially copper foil) that can be bent flexibly. it is common to be
[8]
By mounting a flexible printed circuit board (FPCB) on the battery cell in this way, the shape of the connection terminal can be changed more freely, thereby increasing the use and space utilization. However, the flexible printed circuit board (FPCB) needs to be bent at various angles depending on the type of device or the environment in which it is mounted.
[9]
In this regard, in Patent Document 1, a jig body in which a seating part on which a battery cell is seated is formed with a printed circuit board (PCB) exposed to the other side, provided on one side of the jig body, and fixing the battery cell seated on the seating part Disclosed is a jig device for a battery cell including a fixing member and a folding member rotatably provided on the other side of the jig body and folding the PCB to be positioned in the battery cell by pressing the PCB exposed from the seating portion during rotation.
[10]
According to Patent Document 1, although there is an advantage that the fastening force between the system and the battery can be secured by folding the printed circuit board (PCB), the flexibility of the printed circuit board (PCB) is not lacking compared to that of the flexible printed circuit board (FPCB). There is a problem in that there is a limit to folding, and it is inefficient in terms of space utilization, as well as an additional energy cost required for folding.
[11]
(Prior art literature)
[12]
(Patent Document 1) Korea Patent Publication No. 2015-0141810
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[13]
An object of the present invention is to provide a bending apparatus capable of accurately bending a flexible printed circuit board of a battery cell and a bending method using the same in order to solve the above problems.
[14]
Another object of the present invention is to provide a bending apparatus capable of bending a flexible printed circuit board of a battery cell at a low cost and a bending method using the same.
[15]
Furthermore, an object of the present invention is to provide a bending device capable of securing accurate fastening force between a system and a battery and a bending method using the same.
means of solving the problem
[16]
The battery cell flexible printed circuit board bending device according to the present invention for solving the above problems is a horizontal body 310 for accommodating the battery cell 100 in which the flexible printed circuit board 110 is exposed to the outside on one side. and a die 300 comprising a support wall 320; a bending guide part 400 positioned on one side of the die 300; and a bending unit 500 positioned on one side of the die 300, wherein the bending unit 500 includes a fixed body 510 and a rotating body capable of rotating at a predetermined angle while connected to the fixed body 510 (530), and a board seating part 520 connected to the rotating body 530 and having a board seating groove 521 for accommodating the flexible printed circuit board 110 is formed.
[17]
In addition, in the bending apparatus according to the present invention, the bending guide part 400 includes a first support 410 having one side inclined at a predetermined angle, and a first auxiliary support fixed to one side of the first support 410 . 420 , and a first moving part 430 movable along the inclined surface of the first support 410 , and a predetermined portion of the flexible printed circuit board 110 is provided on one side of the first moving part 430 . It is characterized in that the first pressing portion 431 for supporting the region is further provided.
[18]
In addition, in the bending apparatus according to the present invention, the bending guide part 400 is characterized in that it further includes a first elastic member 440 connecting the first auxiliary support 420 and the first moving part 430 . do.
[19]
In addition, in the bending apparatus according to the present invention, the press unit 600 is positioned on one side of the die 300 , and the press unit 600 is fixed to one side of the second support 610 and the second support 610 . It includes a second auxiliary support 620, and a second movable part 630 movable in the vertical direction, wherein the second movable part 630 is for pressing the bent part of the flexible printed circuit board 110. It is characterized in that the second pressing portion 631 is further provided.
[20]
In addition, in the bending device according to the present invention, the second pressing portion 631 is characterized in that one end is formed with a jaw portion (631').
[21]
In addition, in the bending device according to the present invention, the die 300 is characterized in that the third space portion (S3) cut in a predetermined shape is provided so that the mounting and detachment of the battery cell 100 is easy.
[22]
Also, in the bending apparatus according to the present invention, a second space portion S2 cut in a predetermined shape is provided on one side of the die 300 .
[23]
In addition, in the bending apparatus according to the present invention, the substrate seating portion 520 is characterized in that it is located in the second space (S2).
[24]
In addition, in the bending apparatus according to the present invention, the die 300 is spaced apart from the floor by a predetermined height, and the pedestal 200 for fixing the bending guide part 400 and the bending part 500 is located below the die 300 . It is characterized in that it is located in
[25]
In addition, in the bending device according to the present invention, the pedestal 200 is characterized in that a first space portion S1 cut into a predetermined shape is formed to facilitate the mounting and detachment of the battery cell 100 .
[26]
In addition, in the bending apparatus according to the present invention, the horizontal cut surface of the first pressing part 431 is rectangular, and the cut surface is parallel to the flexible printed circuit board 110 .
[27]
In addition, in the above-described bending method using the flexible printed circuit board bending apparatus of the battery cell, the first step of seating the battery cell 100 on the die 300 , the first pressing part 431 of the bending guide part 400 , one side A second step of bringing the end into close contact with the flexible printed circuit board 110, and a first step of rotating the board seating part 520 of the bending part 500 at a predetermined angle to make the first pressing part 431 in close contact with one side of the first pressing part 431 It is characterized in that it includes three steps.
[28]
Also, in the bending method according to the present invention, a fourth step of moving the first pressing part 431 of the bending guide part 400 that is in close contact with the flexible printed circuit board 110 to its original position, and the bending part 500 It characterized in that it further comprises a fifth step of rotating the substrate seating portion 520 of the predetermined angle to make contact with the upper surface of the die 300 .
[29]
In addition, the bending method according to the present invention further comprises a sixth step of moving the second pressing part 631 of the second moving part 630 to press the bent part of the flexible printed circuit board 110 . characterized.
Effects of the Invention
[30]
The battery cell flexible printed circuit board bending apparatus according to the present invention is provided with a bending guide part and a bending part, so that bending can be performed at an accurate position.
[31]
In addition, the battery cell flexible printed circuit board bending apparatus according to the present invention further includes a press unit, and thus has the advantage of preventing a springback phenomenon.
[32]
In addition, the battery cell flexible printed circuit board bending apparatus according to the present invention has an advantage in that the defect rate can be remarkably reduced because the bending is performed in the die for fixing the battery cells.
Brief description of the drawing
[33]
1 is a schematic diagram of a battery cell before bending a flexible printed circuit board.
[34]
2 is a perspective view of a battery cell flexible printed circuit board bending apparatus according to the present invention.
[35]
FIG. 3 is an enlarged perspective view of a bending guide part in the bending apparatus shown in FIG. 2 .
[36]
FIG. 4 is an enlarged perspective view of a bending unit in the bending apparatus shown in FIG. 2 .
[37]
FIG. 5 is an enlarged cross-sectional view of a press unit in the bending apparatus shown in FIG. 2 .
[38]
6 to 11 are flowcharts for explaining a method of bending a flexible printed circuit board using the bending apparatus according to the present invention.
[39]
12 is a schematic diagram of an inspection jig for checking a bent battery cell.
Modes for carrying out the invention
[40]
In the present application, terms such as "comprises", "have" or "include" are intended to designate that the features, numbers, steps, components, parts, or combinations thereof described in the specification exist, and are intended to indicate that one or more other It should be understood that this does not preclude the possibility of addition or presence of features or numbers, steps, operations, components, parts, or combinations thereof.
[41]
In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions. Throughout the specification, when it is said that a part is connected to another part, it includes not only a case in which it is directly connected, but also a case in which it is indirectly connected with another element interposed therebetween. In addition, the inclusion of a certain component does not exclude other components unless otherwise stated, but means that other components may be further included.
[42]
[43]
Hereinafter, a battery cell flexible printed circuit board bending apparatus according to the present invention will be described.
[44]
2 is a perspective view of a battery cell flexible printed circuit board bending apparatus according to the present invention. Referring to FIG. 2 , the battery cell flexible printed circuit board bending apparatus according to the present invention includes a pedestal 200 , a die 300 on which the battery cell 100 is seated, and a bending position of the flexible printed circuit board 110 . A bending guide part 400 for holding the , a bending part 500 for rotating the flexible printed circuit board 110 to a bending position, and a press part 600 for pressing the bent part of the flexible printed circuit board 110 to be made including can
[45]
First, if the pedestal 200 is described, the die 300 is spaced apart from the floor by a predetermined height and the die 300 is for fixing the bending guide part 400 , the bending part 500 and the press part 600 . ) is located below.
[46]
When viewed from above (in the Z-axis direction), the first space S1 is formed on one side by the first cutout 220, and the protrusion 210 is formed toward the fixed body 510 to be described later. Located. In addition, a second space S2 is formed near the protrusion 210 due to the second cutout 230 .
[47]
Here, the first space part S1 is for the operator's hand to easily grip the battery cell 100 when the battery cell 100 is seated or detached from the die 300 , and the second space part (S2) is to secure a rotation space of the substrate seating portion 520, which will be described later.
[48]
The die 300 providing a space in which the battery cell 100 is seated is positioned above the pedestal 200 , more specifically, along the second space S2 of the pedestal 200 . The die 300 has a horizontal body 310 on a plane, and a support wall that rises to a predetermined height along the edge of the horizontal body 310 so as to limit the shaking left and right after the battery cell 100 is seated. 320) is included.
[49]
On the other hand, on one side of the horizontal body 310, specifically, on the upper portion of the first space S1 of the pedestal 200, a third cut-out 311 and a pair of fourth cut-outs 312 facing each other A third space portion S3 is formed, and the third space portion S3 is for facilitating attachment and detachment of the battery cell 100 like the above-described first space portion S1 .
[50]
The support wall 320 is a first support wall 321 , a second support wall 322 , a third support wall 323 , and a fourth support wall ( 323 ) to support the four sides of the battery cell 100 . 324).
[51]
Subsequently, the bending guide unit will be described. FIG. 3 is an enlarged perspective view of a bending guide part in the bending apparatus shown in FIG. 2 .
[52]
2 and 3 together, when describing the bending guide unit 400, the bending guide unit 400 includes a first support 410, a first auxiliary support 420, a first moving part 430, It may include a first elastic member 440 and a first moving means 450 .
[53]
The first support 410 has a substantially triangular shape with one side inclined so that the first moving part 430 can move inclinedly at a predetermined angle, and the first auxiliary support 420 is connected to the first by fastening means (not shown). The support 410 extends long while being fixed to one side.
[54]
And the first moving unit 430 moves along the inclined surface of the first support 410, in this case, the first moving unit 430 deviates from the path determined by the first moving means 450 such as a sliding structure. You can move smoothly without doing it.
[55]
A 'L'-shaped first pressing part 431 is connected to one side of the first moving part 430 in an inclined state, and the lower end of the first pressing part 431 has an acute angle so as to be horizontal with the ground. It has a sharp blade shape to support a predetermined area of ​​the flexible printed circuit board 110 to be described later.
[56]
Here, the reason that the first support 410 is inclined at a predetermined angle is because it is advantageous for the operation to move the first moving part 430 pressing the predetermined area of ​​the flexible printed circuit board 110 in an inclined state. am.
[57]
The first elastic member 440 connecting the first moving part 430 and the first auxiliary support 420 is to help the movement of the first moving part 430 , and is applied to the first pressing part 431 . When the force is released, it returns to its original position by the elastic force of the first elastic member 440 .
[58]
Here, the first elastic member 440 is preferably a spring, but is not limited thereto as long as it has sufficient force to return the first moving part 430 to its original position.
[59]
FIG. 4 is an enlarged perspective view of a bending unit in the bending apparatus shown in FIG. 2 . The bending part will be described with reference to FIGS. 2 and 4 together.
[60]
The bending unit 500 is for bending the flexible printed circuit board 110 exposed from the battery cell 100 , and includes a fixed body 510 , a substrate seating unit 520 , a rotating body 530 , and a handle 540 . and a rotation shaft 550 .
[61]
The fixed body 510 serves to support the substrate seating part 520, the rotation body 530, the handle 540, and the rotation shaft 550 to operate in an organically connected state to each other, and rotates at a predetermined position. A passage is provided to allow the coaxial 550 to pass therethrough.
[62]
The second space portion S2 between the protrusion 210 of the pedestal 200 and the die 300 is the substrate seating portion 520 rotatably coupled to the fixed body 510 while the rotation shaft 550 is connected to one side. ), and a substrate seating groove 521 recessed by a predetermined depth so that the flexible printed circuit board 110 connected to the battery cell 100 can be seated is formed.
[63]
The rotation body 530 is for rotating the substrate seating part 520 at a predetermined angle, and the other side of the rotation shaft 550 is connected to one side, and a handle 540 that can be gripped by hand for easy rotation. this is attached Of course, as described above, the rotation shaft 550 passes through the fixed body 510 .
[64]
FIG. 5 is an enlarged perspective view of a press unit in the bending apparatus shown in FIG. 2 . Referring to FIGS. 2 and 5 together, the press unit 600 includes a second support 610 , a second auxiliary support 620 , a second moving part 630 , a second elastic member 640 , and a second The moving means 650 may be included.
[65]
The second support 610 is fixed to one side of the support 200 and may be a vertical bar or a 'B' bar.
[66]
The second auxiliary support 620 is extended long while being fixed to one side of the second support 610 by a fastening means (not shown), and with respect to the ground so that the second moving part 630 can move in the vertical direction. located vertically.
[67]
On the other hand, a second moving means 650 such as a sliding structure is positioned between the second support 610 and the second moving unit 630, and through this, the second moving unit 630 does not deviate from a predetermined path. It can move smoothly up and down.
[68]
On one side of the second moving part 630, a 'L'-shaped second pressing part 631 is connected, and an end facing downward (Z-axis direction) has a 'L'-shaped jaw part 631 '. formed, and the jaw portion 631 ′ is for more reliably bending the folded portion of the flexible printed circuit board 110 , and a more detailed description will be given later.
[69]
The second elastic member 640 connecting the second moving part 630 and the second auxiliary support 620 is to help the second moving part 630 to move, and is applied to the second pressing part 631 . When the force is released, it returns to its original position by the elastic force of the second elastic member 640 .
[70]
Here, the first elastic member 440 is preferably a spring, but is not limited thereto as long as it has sufficient force to return the first moving part 430 to its original position.
[71]
6 to 11 are flowcharts for explaining a method of bending a flexible printed circuit board using the bending apparatus according to the present invention.
[72]
A method of bending the battery cell flexible printed circuit board will be described with reference to FIGS. 6 to 11 .
[73]
In the bending method according to the present invention, in the first step of seating the battery cell 100 on the die 300 , one end of the first pressing part 431 of the bending guide part 400 is attached to the flexible printed circuit board 110 . The second step of adhering, the third step of contacting the first pressing part 431 with one side of the first pressing part 431 by rotating the board seating part 520 of the bending part 500 at a predetermined angle, the flexible printed circuit board 110 and In the fourth step of moving the first pressing part 431 of the bending guide part 400 that was in close contact with the original position, the substrate seating part 520 of the bending part 500 is rotated at a predetermined angle, so that the die 300 ) a fifth step of making contact with the upper surface, and a sixth step of pressing the bent part of the flexible printed circuit board 110 by moving the second pressing part 631 of the second moving part 630 . .
[74]
First, when the first step is described in more detail with reference to FIG. 6 , the battery cell 100 is seated in the horizontal body 310 of the die 300 , and the flexible printed circuit board 110 is seated in the substrate seating groove 521 . In this step, the battery cell 100 can be easily seated due to the first space S1 of the pedestal 200 and the third space S3 of the die 300 .
[75]
When the second step is described with reference to FIG. 7 , the first moving part 430 of the bending guide part 400 is moved obliquely downward, and the blade-shaped end of the first pressing part 431 is attached to the flexible printed circuit board ( 110), so that the flexible printed circuit board 110 can be folded at an accurate position.
[76]
8 is a view for explaining the third step, in the third step, in a state in which the flexible printed circuit board 110 is pressed by the end of the first pressing part 431, the substrate seating part 520 is the first Turn the handle 540 of the bending part 500 until it comes into contact with the pressing part 431 . Then, the flexible printed circuit board 110 is primarily folded by a predetermined angle.
[77]
9 is a view for explaining a fourth step, in which the fourth step is a step of moving the first moving part 430 of the bending guide part 400 to an original position, the first moving part 430 or the first When the force applied to the pressing part 431 is released, the first moving part 430 returns to its original position by the first elastic member 440 .
[78]
When the fifth step is described with reference to FIG. 10, the handle of the bending unit 500 ( 540) is additionally rotated.
[79]
11 is a view for explaining the sixth step, a step for minimizing the spring back phenomenon, that is, the tendency to return by pressing the bent portion in which the flexible printed circuit board 110 is folded again, that is, the pressing part 600 The flexible printed circuit board 110 presses the folded bent part while moving the second pressing part 631 of the , and at this time, the bent part can be accurately pressed due to the 'L'-shaped jaw part 631'.
[80]
When the above steps are completed, the battery cells 100 mounted on the die 300 are recovered.
[81]
12 is a schematic diagram of an inspection jig for checking a bent battery cell. Bending of the flexible printed circuit board 110 is completed, the battery cell 100 is seated again in the inspection jig 700 provided with the flexible printed circuit board accommodating groove 710 as shown in FIG. 9 to check whether the bending is defective. there is.
[82]
As the specific part of the present invention has been described in detail above, for those of ordinary skill in the art, these specific descriptions are only preferred embodiments, and the scope of the present invention is not limited thereby. It is obvious to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention, and it is natural that such variations and modifications fall within the scope of the appended claims.
[83]
(Explanation of symbols)
[84]
100: battery cell
[85]
110: flexible printed circuit board
[86]
200: pedestal
[87]
210: protrusion 220: first cutout
[88]
230: second cutout
[89]
300: die
[90]
310: horizontal body
[91]
311: third cut-out 312: fourth cut-out
[92]
320: support wall
[93]
321: first support wall 322: second support wall
[94]
323: third support wall 324: fourth support wall
[95]
400: bending guide part
[96]
410: first support 411: first guide rail
[97]
420: first auxiliary support
[98]
430: first moving part 431: first pressing part
[99]
440: first elastic member 450: first moving means
[100]
500: bending part
[101]
510: fixed body
[102]
520: substrate seating part 521: substrate seating groove
[103]
530: rotating body 540: handle
[104]
550: axis of rotation
[105]
600: press unit
[106]
610: second support 611: second guide rail
[107]
620: second auxiliary support
[108]
630: second moving unit
[109]
631: second pressing part 631': jaw part
[110]
632: second fixed frame
[111]
640: second elastic member 650: second moving means
[112]
700: jig for inspection
[113]
710: flexible printed circuit board receiving groove
[114]
S1: 1st space part S2: 2nd space part
[115]
S3: third space part
Claims
[Claim 1]
a die including a horizontal body and a support wall for accommodating a battery cell in which the flexible printed circuit board is exposed to the outside of one side; a bending guide part positioned on one side of the die; and a bending unit located at one side of the die, wherein the bending unit includes a fixed body, a rotating body connected to the fixed body and rotatable at a predetermined angle, and a flexible printed circuit board connected to the rotating body A flexible printed circuit board bending apparatus for a battery cell, characterized in that it includes a board seating part having a board seating groove formed thereon.
[Claim 2]
According to claim 1, wherein the bending guide portion, a first support having one side inclined at a predetermined angle, a first auxiliary support fixed to one side of the first support, and movable along the inclined surface of the first support A flexible printed circuit board bending apparatus for a battery cell, comprising a first moving part, and further comprising a first pressing part for supporting a predetermined area of ​​the flexible printed circuit board on one side of the first moving part.
[Claim 3]
The flexible printed circuit board bending apparatus of claim 2, wherein the bending guide part further comprises a first elastic member connecting the first auxiliary support and the first moving part.
[Claim 4]
According to claim 1, wherein a press unit is located on one side of the die, the press unit comprises a second support, a second auxiliary support fixed to one side of the second support, and a second movable part movable in the vertical direction, The flexible printed circuit board bending apparatus for a battery cell, characterized in that the second moving part further includes a second pressing part for pressing the bent part of the flexible printed circuit board.
[Claim 5]
[Claim 5] The flexible printed circuit board bending apparatus for a battery cell according to claim 4, wherein a jaw portion is formed at one end of the second pressing portion.
[Claim 6]
The flexible printed circuit board bending apparatus for a battery cell according to claim 1, wherein the die is provided with a third space cut out in a predetermined shape to facilitate mounting and detachment of the battery cell.
[Claim 7]
The flexible printed circuit board bending apparatus of claim 6, wherein a second space part cut in a predetermined shape is provided on one side of the die.
[Claim 8]
The flexible printed circuit board bending apparatus for a battery cell according to claim 7, wherein the board seating part is located in the second space part.
[Claim 9]
The flexible printed circuit board bending apparatus of claim 1, wherein the die is spaced apart from the floor by a predetermined height, and a pedestal for fixing the bending guide part and the bending part is located under the die.
[Claim 10]
The flexible printed circuit board bending apparatus for a battery cell according to claim 9, wherein a first space part cut in a predetermined shape is formed on the pedestal to facilitate mounting and detachment of the battery cell.
[Claim 11]
The flexible printed circuit board bending apparatus of claim 2, wherein a horizontal cut surface of the first pressing part is rectangular, and the cut surface is parallel to the flexible printed circuit board.
[Claim 12]
A bending method using the flexible printed circuit board bending apparatus for a battery cell according to any one of claims 1 to 11, comprising: a first step of seating the battery cell on a die; a second step of adhering one end of the first pressing part of the bending guide part to the flexible printed circuit board; and a third step of rotating the board seating part of the bending part at a predetermined angle to bring it into close contact with one side of the first pressing part.
[Claim 13]
The method of claim 12, further comprising: a fourth step of moving the first pressing part of the bending guide part in close contact with the flexible printed circuit board to its original position; and a fifth step of rotating the board seating part of the bending part at a predetermined angle to bring it into close contact with the upper side of the die.
[Claim 14]
The flexible printed circuit board bending method of the battery cell according to claim 13, further comprising a sixth step of moving the second pressing part of the second moving part to press the bent part of the flexible printed circuit board.