KR20170052985A

KR20170052985A - Apparatus For Testing Welding Characteristics Between Electrode Lead And Bus Bar For Welding And Method Of Using The Same

Info

Publication number: KR20170052985A
Application number: KR1020150155184A
Authority: KR
Inventors: 유재민; 박준규; 성준엽
Original assignee: 주식회사 엘지화학
Priority date: 2015-11-05
Filing date: 2015-11-05
Publication date: 2017-05-15
Also published as: KR102023722B1

Abstract

The present invention provides an electrode lead to be used for a battery cell and a bus bar to be connected to an electrode lead in a laboratory before development of a battery cell to confirm the influence of the welding operation at the production site according to the connection shape of the electrode lead and the bus bar in the laboratory A method of testing a weldability between an electrode lead and a bus bar and a method of using the apparatus. The connecting device includes: a pedestal having a receiving groove; A pushbutton located on the pedestal around the receiving groove; A mask block contacting the sides of the pedestal and the presser bar to form a space around the receiving groove; Molded support blocks and bending blocks enclosed by pedestals, pushers and mask blocks; And a core block passing through the mask block and having a welding conduit facing the receiving groove.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for testing a weld between an electrode lead and a bus bar, and a method of using the apparatus.

The present invention relates to an electrode lead, which is suitable for individually preparing components to be used in an electrical product before development of a battery-related electrical product, and for confirming in advance the influence of the welding operation on the production site according to the connection shape of the components. And a method of using the apparatus.

Recently, in order to reduce the air pollution caused by the exhaust gas of a vehicle, the vehicle is being manufactured based on a study for securing a driving force by using an internal combustion engine and / or an electric motor. Accordingly, the vehicle evolved in the order of a hybrid car, a plug-in hybrid car, and an electric car. In this case, the hybrid vehicle and the plug-in hybrid vehicle have an internal combustion engine, an electric motor and a battery pack, and the electric vehicle has an electric motor and a battery pack without an internal combustion engine.

In addition, the battery pack also evolved with hybrid vehicles, plug-in hybrid vehicles and electric vehicles. The battery pack is configured to be chargeable on the outside and inside of the electric vehicle. The battery pack has battery cells electrically connected to each other. The battery cell has an electrode assembly, a pouch case, and electrode leads. The electrode assembly is sealed with a pouch jacket to produce electricity. The pouch exterior member seals the electrode assembly to protect the electrode assembly from external influences.

One end of the electrode lead is electrically connected to the electrode assembly through the pouch case to give the battery cell an electrical polarity. The other end of the electrode lead is exposed to the outside of the pouch exterior member and connected to at least one bus bar. The bus bar includes a strip-shaped welded portion on one side and measures the voltage of the battery cell on the other side or is electrically connected to an external terminal of the battery pack. The other side of the bus bar is electrically connected to a printed circuit board for voltage measurement when measuring the voltage of the battery cell.

The connection between the electrode lead and the bus bar is performed through a welding operation. That is, the electrode leads are formed in a plate shape, and the ends of the electric leads are bent to face the welded portions of the bus bars before performing the welding work. Next, the end portion of the electrode lead and the welding portion of the bus bar are welded with a laser in contact with each other. Here, the welding characteristic between the electrode lead and the bus bar depends on the degree of close contact between the end portion of the electrode lead and the welded portion of the bus bar.

If the electrode leads are not in close contact with the bus bars before the welding operation is performed, the electrode leads and the bus bars have voids at the weld interface. During the welding operation, the void serves as a barrier to transfer the melt of the electrode lead to the bus bar or the melt of the bus bar to the electrode lead. Thus, the welding operation forms a weld with air bubbles in the gap between the electrode lead and the bus bar. In this case, the bubble of the weld increases the contact resistance between the electrode lead and the bus bar. As the contact resistance increases, the welds cause a voltage drop and reduce the energy efficiency of the battery cell.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrode lead for use in a battery cell and a bus bar to be in contact with the electrode lead in advance at the level of a laboratory, The present invention is directed to a welding apparatus for testing the welding characteristics between an electrode lead and a bus bar, which is suitable for testing welding characteristics between an electrode lead and a bus bar, and a method of using the apparatus.

According to an aspect of the present invention, there is provided an apparatus for connecting a welding electrode lead and a bus bar, comprising: a rectangular plate having a central region of one side thereof partially opened at an upper portion of one side of the rectangular plate, A support base defining a receiving groove extending toward the opposite side and having mounts protruding from both ends of the one side surface below the receiving groove at a lower portion of the one side surface; A pressing member positioned on the support table and surrounding the receiving groove; A mask defining an induction hole facing the receiving groove; a mask block having seating portions protruding from the mask toward the support base and positioned on the mounts, respectively; A forming support block and a bending block positioned respectively in said receiving groove and between said seating portions; And a core block having a welded conduit inserted into the guide hole.

According to the present invention, the receiving groove may have a larger width in the inside than in the one side along the direction parallel to the one side.

According to the present invention, the mounting portions may be spaced apart by a size equal to the opening width of the receiving groove formed along the one side surface.

According to the present invention, the support base may have hooking protrusions protruding from the one side surface toward the inside of the receiving groove.

Preferably, the pedestal may have a semicircular gripping groove communicating with the receiving groove at the opposite side of the one side.

According to the present invention, the pusher may have a 'C' shape and may be opened toward the one side of the base.

Preferably, the pushing plate may be vertically aligned with the one side surface of the support base.

According to the present invention, the mask may contact the mounts through the lower end to surround the space between the mounts together with the mountings and the mountings.

Preferably, the seating portion is located around the guide hole, and exposes a lower end portion of the mask below the seating portion, and is capable of contacting the support pedestal and the press pedestal.

In one aspect, the mask block may have the same width as the pedestal and the pushbone along a direction parallel to the one side of the pedestal.

According to the present invention, the molded support block can be accommodated in the receiving groove and can be brought to the same level as the pedestal just below the pushing table.

According to the present invention, the bending block is located on the space between the mounts between the mounts, and can be partially inserted into the receiving groove to face the molded support block.

Preferably, the forming support block and the bending block are in the shape of a quadrangular prism, the forming support block is at right angles to the corner of the quadrangular prism, and the bending block can be rounded at the corners of the quadrangular prism.

According to the present invention, the core block may have a flange surrounding the inlet of the welded conduit at the periphery of the guide hole at the opposite side of the seating portions and in contact with the mask.

According to another aspect of the present invention, there is provided a method of using a connecting device for a welding electrode lead and a bus bar, the method including: mounting portions protruding from both edges of one side of a rectangular plate; Preparing a pedestal having a receiving groove which opens at a central region and extends to the opposite side of the one side; Sequentially arranging a forming support block and a bus bar in the receiving groove toward the one side; Disposing an electrode lead for the battery cell on the support base, the forming support block and the bus bar, and arranging the end of the electrode lead so as to protrude from an upper end of the bus bar; Disposing a pushbutton to press the electrode lead on the support base; Disposing a mask block on the mounting portions for connecting the mounting portions and surrounding the electrode lead, the mask block having guide holes facing the receiving groove; Inserting a bending block in the mask block on the mounts to bend the electrode leads toward the bus bar; Inserting a core block into the guide hole of the mask block after separating the bending block from the electrode lead, thereby bringing the electrode lead into close contact with the bus bar; And performing welding on an electrode lead exposed to the welding hole through a welding hole passing through the core block.

The apparatus for testing the weldability between the electrode leads and the bus bars according to the present invention provides a tool for easily testing the weldability of the bus bars and the electrode leads in a laboratory environment.

In addition, the method of using the weldability testing apparatus according to the present invention evaluates the welding characteristics according to the connection shape of the electrode leads and the bus bars, and feeds them back to the production site, thereby preventing the welding quality deterioration of the electrode leads and the bus bars at the production site .

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention and, together with the description given below, serve to further augment the technical spirit of the invention, And shall not be interpreted.
1 is an exploded perspective view showing an apparatus for testing the weldability between an electrode lead and a bus bar according to an embodiment of the present invention.
Fig. 2 is a perspective view showing a coupling relation between the pedestal, the forming support block, the presser, the mask block and the bending block in Fig. 1. Fig.
Fig. 3 is a cross-sectional view showing a coupling relationship between the pedestal, the forming support block, the presser, the mask block and the bending block taken along the cutting line I-I 'in Fig.
Fig. 4 is a perspective view showing the coupling relationship between the support block, the forming support block, the presser, the mask block, and the core block after the bending block is separated from the mask block in Fig.
Figs. 5 to 13 are schematic views for explaining a method of using the apparatus for testing the weldability between the electrode lead and the bus bar of Fig. 1 and an operation mechanism thereof.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor should appropriately interpret the concept of a term appropriately in order to describe its own application in the best way possible. It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. 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. Therefore, various equivalents And variations are possible.

In the embodiment described below, the battery cell refers to a lithium secondary battery. Here, the lithium secondary battery is generally referred to as a secondary battery in which lithium ions act as working ions during charging and discharging to cause an electrochemical reaction between the positive electrode and the negative electrode. However, it is apparent that the present invention is not limited to the kind of the battery.

FIG. 1 is an exploded perspective view showing an apparatus for testing a weldability between an electrode lead and a bus bar according to an embodiment of the present invention. FIG. 2 is a cross- FIG.

3 is a cross-sectional view showing a coupling relationship between the support bar, the forming support block, the presser bar, the mask block and the bending block taken along the cutting line I-I 'in Fig. 2, and Fig. 4 is a cross- And FIG. 5 is a perspective view showing a coupling relationship between the support block, the molded support block, the presser bar, the mask block and the core block after the separation of the banding block from the support block.

1 to 4, an apparatus for testing weldability between an electrode lead and a bus bar according to the present invention includes a support base 10, a molding support block 20, a presser bar 40, a mask block 60 ), A bending block 70 and a core block 90. The pedestal 10 includes a rectangular lower face and an upper face facing each other in the directions opposite to each other, and a rectangular plate having four side faces vertically connecting the lower face and the upper face in all directions.

Here, the support base 10 partially extends from the upper side of one side A of the rectangular plate to a central region of one side A and extends from one side A to the opposite side of the side A (1). &Lt; / RTI > The receiving grooves 1 have a larger width in the inside than one side A along the direction parallel to the one side A. [

Preferably, the pedestal 10 has a semicircular gripping groove 3 communicating with the receiving groove 1 at the opposite side of the side A. The gripping groove 3 accommodates the operator's hand and facilitates the seating of the forming support block 20 in the receiving groove 1 or the separation of the forming support block 20 from the receiving groove 1. The pedestal 10 has hooks 5 protruding from the one side surface A toward the inside of the receiving groove 1 and facing each other along one side A.

Here, the support base 10 defines cylindrical hollows 2 which open at the corners of the receiving groove 1 toward the inside of the receiving groove 1, and the receiving grooves 1 Or to facilitate the separation of the forming support block 20 from the receiving groove 1 or the separation of the forming support block 20 from the receiving groove 1. [

In another aspect, the pedestal 10 has mounting portions 7 projecting from both ends of one side A below the receiving groove 1 at the bottom of one side A of the rectangular plate. The mounting portions 7 are spaced apart by the same size as the opening width of the receiving groove 1 formed along one side A. Here, the mounting portions 7 define a space S in the vicinity of one side A thereof.

In another aspect, the pedestal 10 has first engagement grooves 8, 9. The first engaging groove 8 is opened toward the mask block 60 and the engaging groove 9 is opened toward the presser bar 40. The forming support block 20 is aligned with the receiving groove 1 of the pedestal 10. More specifically, the molded support block 20 can be received in the receiving groove 1 of the pedestal 10 in Figs. 2 and 3. Preferably, the molded support block 20 is supported on the retaining jaws 5 of the pedestal 10 in Fig. 4 and is not released from the receiving groove 1 toward the mounts 7.

In one aspect, the forming support block 20 has a square pillar shape and is at right angles to the corner portion of the square pillar. The presser foot 40 is aligned on the pedestal 10. More specifically, the pushbars 40 are located on the pedestal 10 and are located around the receiving grooves 1. Preferably, the presser foot 40 has a generally U-shaped configuration and is opened toward one side A of the pedestal 10.

Here, the presser bar 40 defines cylindrical hollows 38 at the corners of the inner side wall 37 and defines a crack that can occur at the corners of the inner side wall 37 through the hollows 38 prevent. In one aspect, the presser foot 40 is vertically aligned with one side A of the pedestal 10. In other respects, the presser foot 40 has first through holes 35 that align with the first engagement grooves 9, respectively.

The first through holes 35 are located in the vicinity of the receiving groove 1 of the pedestal 10 and penetrate the presser pedestal 40. Here, the pedestal 10 and the presser bar 40 receive the screw members (not shown in the drawings) in the first engagement grooves 9 and the first through holes 35 and are fixed to each other .

The mask block 60 has a mask 55 and a seating portion 57. The mask 55 defines an induction hole 51 facing the receiving groove 1 of the pedestal 10. The mask 55 defines cylindrical hollows 52 opened at the corners of the guide hole 51 toward the inside of the guide hole 51 and guides the guide hole 51 through the hollows 52. [ Thereby preventing cracks that may occur in the corners of the substrate.

Preferably, the mask 55 is in contact with the mounts 7 via the lower end thereof, and the space S between the mounts 7, together with the mounts 7 in consideration of FIGS. 2-4, Enclose. The seating portions 57 are respectively projected from the upper end of the mask 55 toward the support base 10 and are respectively placed on the mount portions 7.

Preferably, the seating portion 57 has a structure that is shape-matched with the corresponding mounting portion 7. Specifically, the seating portion 57 is positioned around the guide hole 51 to expose the lower end of the mask 55 under the seating portions 57. In one aspect, the seating part (57) is in contact with the pedestal (10) and the presser foot (40). Here, the mask block 60 has the same width as the pedestal 10 and the presser pedestal 40 along the direction parallel to the one side A of the pedestal 10.

In one aspect, the mask block 60 has second engagement grooves 53 and second through holes 59. The second engaging groove 53 is opened toward the core block 90 from the mask 55 and the second through hole 59 penetrates through the mask 55 and the seating part 57 to form the pedestal 10, Lt; / RTI > The pedestal 10 and the mask block 60 may be fixed to each other by receiving screw members (not shown in the figure) in the first engaging grooves 8 and the second through holes 59 .

The bending block 70 is aligned between the seating portions 57 of the mask block. More specifically, the bending block 70 protrudes from the mask block 60 between the seating portions 57, as shown in Figs. 2 and 3, and between the seating portions 57 Is placed on the space S between the mounting portions 7 and is partly inserted into the receiving groove 1 to face the forming support block 20.

Preferably, the bending block 70 is formed of a square pillar, and has a smooth curved surface structure through a chamfer at an edge portion of the square pillar. The core block 90 is aligned with the guide hole 51 of the mask block 60. Specifically, the core block 90 is inserted into the mask block 60 after detaching the banding block 70 from the mask block 60.

The core block 90 has a welded conduit 84 and a flange 88. The welding conduit 84 is inserted into the induction hole 51 of the mask block 60 in Fig. Preferably, the weld conduit 84 has a welder 82 therein. The flange 88 surrounds one side of the weld conduit 84. 4, the flange 88 is located on the opposite side of the seating portions 57 of the mask block 60 to the periphery of the weld hole 82 so that the mask < RTI ID = 0.0 > (55).

Here, the core block 90 has third through holes 86. The third through holes 86 are opened toward the mask block 60 through the flange 88. The mask block 60 and the core block 90 may be fixed to each other by receiving screw members (not shown in the drawings) in the second engagement groove 53 and the third through holes 86.

Figs. 5 to 13 are schematic views for explaining a method of using the apparatus for testing the weldability between the electrode lead and the bus bar of Fig. 1 and an operation mechanism thereof.

Referring to Fig. 5, first, the pedestal 10 can be prepared. The pedestal 10 may have a receiving groove 1, a gripping groove 3, a latching jaw 5 and a mounting portion 7. The receiving grooves 1 open on one side A of the pedestal 10 on the mounts 7 and extend on the opposite side of the one side A. [ The gripping groove 3 can communicate with the receiving groove 1 on the opposite side of the side surface A. [

The catching jaws 5 are projected from the one side surface A toward the receiving groove 1. The mounting portions (7) protrude from one side (A) below the receiving groove (1). Preferably, the mounts 7 define a space S around one side A thereof. Here, the support base 10 may have first engagement grooves 8, 9.

Subsequently, the molded support block 20 can be prepared. The forming support block 20 can be inserted into the receiving groove 1 of the pedestal 10. In detail, the forming support block 20 receives the operator's hand in the gripping groove 3 and is seated in the receiving groove 1 and contacts the contact of the operator's hand through the hollows 2 of the receiving groove 1 To the appropriate position in the receiving groove 1. Preferably, the forming support block 20 may be located close to the gripping groove 3 at the opposite side of one side A of the pedestal 10.

In one aspect, the forming support block 20 may have a top surface at the same level as the pedestal 10. In another aspect, the forming support block 20 is of a square pillar shape and is at right angles to the corner portion of the square pillar. Next, a strip-shaped bus bar 110 can be prepared. The bus bar 110 may be inserted between the latching jaws 5 and the forming support block 20. Preferably, the bus bar 110 may be in intimate contact with the forming support block 20 using the latching jaws 5.

Here, the forming support block 20 may have a greater thickness than the bus bar 110 along a direction perpendicular to the one side A. In one aspect, the bus bar 110 may have a top surface at the same level as the forming support block 20 along the depth of the receiving groove 1. The bus bar 110 may be made of copper (Cu).

Next, referring to FIG. 6, a plate-shaped electrode lead 130 for a battery cell can be prepared. The electrode leads 130 may have a lower electrode lead 124 and an upper electrode lead 128 sequentially stacked. In one aspect, the lower electrode lead 124 and the upper electrode lead 128 may be made of copper and / or aluminum.

When the electrode leads 130 include the lower electrode leads 124 and the upper electrode leads 128, the lower electrode leads 124 and the upper electrode leads 128 are connected to one bus bar 110 Applied to welding tests to be bonded. However, when the electrode lead 130 includes the lower electrode lead 124 or the upper electrode lead 128, the lower electrode lead 124 or the upper electrode lead 128 may be connected to one bus bar 110 It can be applied to other welded joints.

Next, an electrode lead 130 may be disposed on the pedestal 10, the molding support block 20, and the bus bar 110. The electrode leads 130 may be positioned on the pedestal 10 and sequentially protrude from the bus bar 110 while sequentially covering the gripping grooves 3, the molding support block 20 and the bus bar 110. The width of the electrode lead 130 may be smaller than the opening width of the receiving groove 1 on one side A of the pedestal 10.

Referring to Fig. 7, a presser bar 40 can be prepared. The pushbutton 40 may be arranged to press the electrode lead 130 on the pedestal 10. The presser foot 40 preferably has a U-shape so as to surround the periphery of the receiving groove 1 of the pedestal 10 and extends toward one side of the pedestal 10 (A in Fig. 6) And can be aligned perpendicular to one side A of the pedestal 10.

In one aspect, the pushbutton 40 may have first through holes 35. The first engagement grooves 9 of the pedestal 10 and the first through holes 35 of the presser bar 40 receive the screw members and engage the pedestal 10 and the presser pedestal 40 ). Accordingly, the pressing pad 40 can firmly fix the electrode lead 130 on the pedestal 10.

Next, the mask block 60 can be prepared. The mask block 60 may be disposed on the mounts 7 of the pedestal 10. Preferably, the mask block 60 may have a mask 55 and a seating portion 57. The mask 55 connects the seating portions 57 and contacts the seating portions 7 under the seating portions 57 and defines the guidance holes 51 between the seating portions 57.

The seating portions 57 are respectively seated on the mounting portions 7 and can contact the support pedestal 10 and the presser pedestal 40. In addition, the seating portions 57 can define another neighboring space S1 on the space between the mounting portions 7 (S in Fig. 5). The mask block 60 has second engagement grooves 53 in the mask 55 and a second through hole 59 in the mask 55 and in the seating portions 57.

5) of the support block 10 and the second through holes 59 of the mask block 60 receive the screw members to support the support block 10 and the mask block 60 ).

Referring to FIG. 8, the electrode lead 130 includes a support base 10, a molding support block 20, a presser bar 40, and a bus bar (not shown) 110 < / RTI > More specifically, the electrode leads 130 are positioned on the pedestal 10, the molding support block 20 and the bus bar 110 and protrude from the bus bar 110, And can continue to extend into the space S1 between the stands 57. Here, the electrode lead 130 is surrounded by the mask block 60 and is not in contact with the mask block 60.

Referring to Figs. 9-11, a bending block 70 may be prepared. The bending block 70 may be aligned with the space S1 between the seating portions 57 on the mask block 60. [ Subsequently, the bending block 70 is inserted between the seating portions 57 to come in contact with the electrode leads 130, and the electrode leads 130 according to the shape of the molding support block 20 and the bus bar 110 It can be bent vertically.

10, the bending block 70 is partially brought into contact with the bottom of the receiving groove 1 of the pedestal 10 so that the electrode lead 130 is brought into contact with the bottom of the receiving groove 1 of the pedestal 10, And can be brought into contact with the bar 110. Here, the bending block 70 covers the space S between the mounting portions 7 of the pedestal 10. The electrode leads 130 may be in close contact with the bus bars 110 through the bending block 70. Preferably, the electrode lead 130 has a bent portion 130A between the bending block 70 and the bus bar 110.

Referring to FIG. 12, the bending block 70 can be separated from the seating portions 57 of the mask block 60. The bent portion 130A of the electrode lead 130 is separated from the bus bar 110 by the restoring force of the electrode lead 130 after the bending block 70 is separated from the seating portions 57. [ . The guide hole 51 of the mask block 60 may expose the bent portion 130A to the outside so as to face the bent portion 130A of the electrode lead 130. [

Subsequently, the core block 90 can be prepared. Preferably, the core block 90 may have a welded conduit 84 and a flange 88. The weld conduit 84 has a weld hole 82. The flange 88 surrounds the inlet of the weld conduit 84. Preferably, the flange 88 has third through holes 86 at its edges.

Referring to FIG. 13, the core block 90 may be partially inserted into the guide hole 51 of the mask block 60. In detail, the welding conduit 84 of the core block 90 is fitted in the guide hole (51 of FIG. 12) and can contact the bent portion 130A of the electrode lead 130. FIG. The flange 88 of the core block 90 may be spaced from the mask block 60 on the opposite side of the seating portions 57.

Here, the flange 88 serves to limit the movement of the welded conduit 84 inserted in the guide hole 51 of the mask block 60. Next, until the flange 88 is brought into contact with the mask block 60, the core block 90 is welded to the bent portion 84 of the electrode lead 130 toward the bus bar 110 using the welded conduit 84, (130A). The bending portion 130A of the bus bar 110 and the electrode lead 130 are tightly adhered to each other by the core block 90 at one side of the forming support block 20. [

The bent portion 130A may have a flat shape on the bus bar 110. The support base 10, the molding support block 20, the presser bar 40, the mask block 60 and the core block 90 are connected to each other by a weldability tester 100 A mounting tool for mounting the bus bar 110 and the electrode lead 130 can be configured.

The bent portion 130A of the electrode lead 130 may be opposed to the optical system 140 of the welding apparatus 150 through the welding hole 82 of the core block 90. [ The optical system 140 can irradiate the laser L to the bent portion 130A of the electrode lead 130 through the welding hole 82. [ The laser L may irradiate the bent portion 130A of the electrode lead 130 to weld the bus bar 110 and the bent portion 130A of the electrode lead 130. [

After the welded body of the bus bar 110 and the electrode lead 130 is completed, the welded body of the bus bar 110 and the electrode lead 130 is bent from the weldability testing apparatus 100 between the electrode lead and the bus bar, The block 70 may be separated from the separated mounting tool and exposed to inspection of the welding strength, the physical structure of the weld interface, the contact resistance, and the like. Thus, the bending position and the bending strength of the electrode lead 130, the radius of curvature of the molded support block 20 and / or the edge portion of the bending block 70 are optimized at the laboratory level, It can be reflected in the welding process in the field and contribute to improve the welding quality of the bus bar 110 and the electrode lead 130.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

Claims

Defining a receiving groove partially opening at the upper portion of one side of the rectangular plate and extending from the one side to the opposite side of the one side, and defining a receiving groove partially below the receiving groove A pedestal having pedestals protruding from both ends of the one side surface;
A pressing member positioned on the support table and surrounding the receiving groove;
A mask defining an induction hole facing the receiving groove; a mask block having seating portions protruding from the mask toward the support base and positioned on the mounts, respectively;
A forming support block and a bending block positioned respectively in said receiving groove and between said seating portions; And
And a core block having a welding conduit inserted into the guide hole. The apparatus for testing the weldability between the electrode lead and the bus bar.

The method according to claim 1,
Wherein the receiving groove has a larger width in a direction parallel to the one side than in the one side.

The method according to claim 1,
Wherein the mounting portions are spaced apart from each other by the same size as the opening width of the receiving groove formed along the one side surface.

The method according to claim 1,
Wherein the support base has hooks protruding from the one side surface toward the inside of the receiving groove.

The method according to claim 1,
Wherein the support base has a semicircular gripping groove communicating with the receiving groove at an opposite side of the one side surface.

The method according to claim 1,
Wherein the pushbars are opened toward the one side surface of the support base.

The method according to claim 1,
Wherein the pushbars are vertically aligned with the one side surface of the support base.

The method according to claim 1,
Wherein the mask is in contact with the mounting portions through a lower end portion and surrounds the space between the mounting portions together with the mounting portions and the mounting portions.

The method according to claim 1,
Wherein the seating portion is positioned around the guide hole and exposes a lower end portion of the mask below the seating portion, and is in contact with the pedestal and the pressing bar.

The method according to claim 1,
Wherein the mask block has the same width as that of the pedestal and the pushing table along a direction parallel to the one side of the pedestal.

The method according to claim 1,
Wherein the forming support block is accommodated in the receiving groove and is leveled with the pedestal immediately below the pressing pedestal.

The method according to claim 1,
Wherein the bending block is located on a space between the mounts between the mounts and is partially inserted into the receiving groove to face the forming support block.

The method according to claim 1,
The forming support block and the bending block are formed in a square pillar shape,
Wherein the forming support block is at right angles to the corner of the quadrangular column,
Wherein the bending block is rounded at the corners of the rectangular column.

The method according to claim 1,
Wherein the core block has a flange surrounding the inlet of the welded conduit and in contact with the mask at a periphery of the guide hole at an opposite side of the seating portions.

A step of preparing mounts each protruding from both edges of one side face of the rectangular plate and a pedestal having a receiving groove extending from the one side face to the opposite side by opening a central region of the one side face on the mounts;
Sequentially arranging a forming support block and a bus bar in the receiving groove toward the one side;
Disposing an electrode lead for the battery cell on the support base, the forming support block and the bus bar, and arranging the end of the electrode lead so as to protrude from an upper end of the bus bar;
Disposing a pushbutton to press the electrode lead on the support base;
Disposing a mask block on the mounting portions for connecting the mounting portions and surrounding the electrode lead, the mask block having guide holes facing the receiving groove;
Inserting a bending block in the mask block on the mounts to bend the electrode leads toward the bus bar;
Inserting a core block into the guide hole of the mask block after separating the bending block from the electrode lead, thereby bringing the electrode lead into close contact with the bus bar; And
And performing welding on an electrode lead exposed to the welding hole through a welding hole passing through the core block.