CN210413276U - Laminate polymer battery utmost point ear welding jig - Google Patents

Abstract

The utility model provides a laminate polymer battery utmost point ear welding jig, including centre gripping subassembly, direction subassembly and first driving piece, the centre gripping subassembly is connected with the direction subassembly including two grip blocks of relative setting, each grip block, and first driving piece is connected with each grip block, and first driving piece drives each grip block respectively and removes along the direction subassembly to make the grip block centre gripping laminate polymer battery relative side. The utility model provides a laminate polymer battery utmost point ear welding jig removes along the direction subassembly through adopting each grip block of first driving piece drive and is used for the side that the centre gripping laminate polymer battery is relative to the realization is to laminate polymer battery's clamp dress, location, replaces manual control, has improved the clamp dress positioning accuracy to laminate polymer battery.

Description

Laminate polymer battery utmost point ear welding jig

Technical Field

The utility model relates to a lithium ion battery technical field especially relates to a laminate polymer battery utmost point ear welding jig.

Background

The lithium ion soft package battery mainly comprises a soft package battery core and an external shell. The soft package battery core comprises a plurality of soft package battery core units connected in series or in parallel and a busbar, and the positive and negative electrode lugs are used for being connected with the busbar as the leading-out ends of the positive and negative electrodes of the soft package battery core units respectively so as to realize series connection or parallel connection of the soft package battery core units. The positive and negative electrode tabs are in a sheet structure, and are usually fixedly connected with the bus bar in a welding connection manner to ensure the stability of the connection relationship. The outer shell of the soft package battery is an aluminum plastic film, so that the soft package battery is allowed to deform within a certain range. Therefore, how to clamp and fix the soft package battery so as to weld the tab and the bus bar of the sheet structure becomes a research hotspot.

In the prior art, a welding fixture is usually adopted to clamp and position the soft package battery so as to facilitate welding operation. Current welding jig includes workstation, telescopic link and presss from both sides tight fixed plate, and laminate polymer battery arranges in on the workstation, and two press from both sides tight fixed plate and set up relatively to be connected in order to drive two tight fixed plate relative movement that press from both sides through telescopic link and workstation, be used for pressing from both sides tight laminate polymer battery's a pair of side, and then realize pressing from both sides the dress to laminate polymer battery and fix.

However, when clamping and positioning the soft package battery, the conventional welding fixture is realized by manually controlling the telescopic rod, so that the clamping and positioning accuracy of the soft package battery is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a laminate polymer battery utmost point ear welding jig for current welding jig when pressing from both sides dress, location to laminate polymer battery, lead to the problem that the clamp dress positioning accuracy is low to laminate polymer battery through manual control telescopic link.

The utility model provides a soft package battery tab welding fixture, which comprises a clamping component, a guide component and a first driving piece,

the clamping assembly comprises two clamping plates which are oppositely arranged, each clamping plate is connected with the guide assembly, the first driving piece is connected with each clamping plate, and the first driving piece drives each clamping plate to move along the guide assembly respectively, so that the clamping plates clamp opposite side faces of the soft package battery.

Furthermore, the guide assembly comprises a slide rail, a first mounting plate and two slide blocks, the slide rail is positioned on the first mounting plate, each slide block is connected to the slide rail, and the slide blocks are connected with the clamping plate;

the number of the first driving pieces is two, each first driving piece is connected with the first mounting plate, the first driving pieces are connected with the sliding blocks, and each first driving piece drives the different sliding blocks to move relatively along the extending direction of the sliding rail, so that the clamping plates clamp the opposite side faces of the soft package battery.

Further, the welding jig still includes rotating assembly, rotating assembly include the second driving piece and with the fixing base that the second driving piece is connected, the fixing base with first mounting panel is connected, the second driving piece passes through the fixing base drive first mounting panel is rotatory, so that the centre gripping subassembly rotates around the axis of rotation of second driving piece.

Further, the welding fixture also comprises a fixing component,

the fixing assembly comprises two first supporting plates, a plurality of second supporting plates and a plurality of connecting pieces, each second supporting plate is respectively coated on the side face of the soft package battery, the adjacent second supporting plates are detachably connected through the connecting pieces, the first supporting plates are respectively coated on the end face of the soft package battery, and the adjacent second supporting plates are detachably connected with the first supporting plates through the connecting pieces;

be equipped with the first hole of stepping down in the first backup pad, in order to pass through the first hole of stepping down exposes laminate polymer battery's utmost point ear welding position, two the grip block centre gripping the outer wall of second backup pad.

Further, the welding fixture also comprises a positioning component and a buffer component,

the positioning assembly comprises a welding pressure head, a second mounting plate, a connecting plate and a third driving piece, the welding pressure head is connected with the connecting plate through a buffer assembly, the connecting plate and the second mounting plate are connected with the third driving piece, and the third driving piece drives the connecting plate to move towards the welding pressure head;

the welding pressure head is provided with a welding channel for a welding gun of a welding machine to pass through, and the second yielding hole is opposite to the welding channel.

Further, the third driving piece with the second mounting panel is two, each the third driving piece is with different the second mounting panel is connected, two the third driving piece all with the connecting plate is connected, the third driving piece is located respectively the second hole's that steps down opposite side.

Further, buffering subassembly includes spring, connecting pin and mounting, the connecting pin passes in proper order the connecting plate with behind the welding pressure head with the mounting is connected, the spring suit is in on the connecting pin, just the spring is located the welding pressure head with between the connecting plate.

Further, the number of the buffer assemblies is two, and the two buffer assemblies are respectively connected with the opposite sides of the connecting plate.

Further, the second backup pad internal surface with laminate polymer battery's side contact, just the internal surface of second backup pad with laminate polymer battery's side phase-match.

Furthermore, a first limiting part is arranged on the clamping plate, and a second limiting part matched with the first limiting part is arranged on the outer surface of the second supporting plate.

Further, the connecting piece is a buckle.

The utility model provides a laminate polymer battery utmost point ear welding jig, each grip block is connected with the direction subassembly, and first driving piece is connected with each grip block, and first driving piece drives each grip block respectively and moves along the direction subassembly to make the grip block centre gripping laminate polymer battery relative side; through being connected each grip block with the direction subassembly, limited the portable route of two relative grip blocks that set up, remove along the direction subassembly through being connected first driving piece and each grip block with each grip block of drive, realized that two grip blocks can be relative be close to or keep away from, and then realized that the grip block can be used for the relative side of centre gripping laminate polymer battery. The utility model provides a laminate polymer battery utmost point ear welding jig removes along the direction subassembly through adopting each grip block of first driving piece drive and is used for the side that the centre gripping laminate polymer battery is relative to the realization is to laminate polymer battery's clamp dress, location, replaces manual control, has improved the clamp dress positioning accuracy to laminate polymer battery.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural view of a soft-package battery tab welding fixture provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an assembly state of the clamping assembly, the guiding assembly, the first driving member and the rotating assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a fixing assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an assembly state of the positioning assembly and the buffering assembly according to an embodiment of the present invention.

Reference numerals:

1: a clamping assembly;

11: a clamping plate;

111: a first limiting part;

2: a guide assembly;

21: a slide rail;

22: a first mounting plate;

23: a slider;

3: a first driving member;

4: a fixing assembly;

41: a first support plate;

411: a first abdicating hole;

412: a support groove;

42: a second support plate;

43: a connecting member;

431: a hasp;

432: a connecting portion;

5: a rotating assembly;

51: a second driving member;

52: a fixed seat;

6: a positioning assembly;

61: welding a pressure head;

611: welding a channel;

62: a second mounting plate;

63: a connecting plate;

631: a second abdicating hole;

64: a third driving member;

7: a buffer assembly;

71: a spring;

72: a connecting pin;

73: a fixing member;

8: positioning the bottom plate;

81: a positioning part.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is a schematic structural view of a soft-package battery tab welding fixture provided by an embodiment of the present invention; fig. 2 is a schematic structural diagram of an assembly state of the clamping assembly, the guiding assembly, the first driving member and the rotating assembly according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a fixing assembly according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of an assembly state of the positioning assembly and the buffering assembly according to an embodiment of the present invention.

The embodiment of the utility model provides a preferred laser welding of welding mode that relates to, laser welding is the light beam that adopts polariscope reflection laser to produce, makes it concentrate on focusing device to produce the light beam of huge energy and shine for the heat source in the material junction for thereby the material of separation takes place rapidly after absorbing laser energy and melts and even vaporize and form the molten bath jointly, thereby solidifies the welding mode that links together in subsequent cooling process. The laser welding process has been increasingly applied to the assembly of power battery modules and PACK systems due to the advantages of high power density, high welding speed, high strength, small deformation and the like.

Reference is now made to fig. 1-4. A pouch battery tab welding jig according to an embodiment of the application is described. As shown in fig. 1, the embodiment provides a laminate polymer battery tab welding jig, including centre gripping subassembly 1, direction subassembly 2 and first driving piece 3, centre gripping subassembly 1 includes two grip blocks 11 that set up relatively, and each grip block 11 is connected with direction subassembly 2, and first driving piece 3 is connected with each grip block 11, and first driving piece 3 drives each grip block 11 respectively and removes along direction subassembly 2 to make the relative side of laminate polymer battery of grip block 11 centre gripping.

Specifically, the clamping assembly 1 comprises two clamping plates 11 which are oppositely arranged, and each clamping plate 11 is connected with the guide assembly 2; it can understand, two grip blocks 11 that set up relatively are connected the back with guide assembly 2 respectively, and guide assembly 2 can inject the portable route of two grip blocks 11 for two grip blocks 11 in the removal process also can keep the state of relative setting, avoid two grip blocks 11 to take place the skew in the removal process, and then make two grip blocks 11 can be with the relative side of parallel centre gripping laminate polymer battery all the time.

Optionally, a first driving member 3 is connected to each clamping plate 11, and the first driving member 3 drives each clamping plate 11 to move along the guiding assembly 2, so that the clamping plates 11 clamp opposite sides of the pouch battery. As can be understood, the first driving component 3 can drive the clamping plate 11 to move along the guiding component 2, so that the two clamping plates 11 can relatively approach or move away, thereby realizing that the clamping plates 11 can be used for clamping the pouch battery.

Optionally, the distance that each grip block 11 is driven respectively by first driving piece 3 and moves along guide assembly 2 can be controlled and adjusted, and the distance that grip block 11 moves along guide assembly 2 is controlled through adjusting the stroke of first driving piece 3, not only can be used for controlling the degree of clamping of grip block 11 to the relative side of laminate polymer battery, can also make grip block 11 be used for the laminate polymer battery of centre gripping different sizes.

Alternatively, the first driving member 3 may be a pneumatic or hydraulic cylinder in order to smoothly control the movement of the clamping plate.

Alternatively, the number of the first driving members 3 may be one or two. When the number of the first driving parts 3 is one, one clamping plate 11 can be fixedly connected with the guide assembly 2, that is, the positions of the clamping plate 11 and the guide assembly 2 are relatively fixed, and the first driving part 3 is connected with the other clamping plate 11 and drives the clamping plate to move along the guide assembly 2, so that the opposite side surfaces of the pouch battery can be clamped by the two clamping plates 11; when the number of the first driving parts 3 is one, the first driving parts 3 can also be respectively connected with the two clamping plates 11 through the transmission mechanism, so that the two clamping plates 11 are driven to move relatively along the guide assembly 2 through the first driving parts 3, and the consistency of the movement control of the two clamping plates 11 is improved.

Optionally, welding jig still includes positioning bottom plate 8, and positioning bottom plate 8 sets up in the below of centre gripping subassembly 1 for support laminate polymer battery's bottom, be equipped with on positioning bottom plate 8 with laminate polymer battery matched with location portion 81, location portion 81 are used for injecing laminate polymer battery's position, in order to prevent laminate polymer battery from taking place the offset in welding process, can further improve the clamp dress positioning accuracy to laminate polymer battery. Referring to fig. 1, this embodiment is preferred, and location portion 81 is for setting up the spacing arch on location bottom plate 8, and spacing arch and laminate polymer battery cooperate and set up, and it is on location bottom plate 8 is arranged in to grip block 11 centre gripping laminate polymer battery, and spacing arch is located the outside of two terminal surfaces of laminate polymer battery just, prevents laminate polymer battery's terminal surface to move forward or backward.

Referring to fig. 3, optionally, the welding fixture further includes a fixing assembly 4, where the fixing assembly 4 includes two first supporting plates 41, a plurality of second supporting plates 42 and a plurality of connecting members 43, each second supporting plate 42 is respectively wrapped on a side surface of the pouch battery, adjacent second supporting plates 42 are detachably connected through the connecting members 43, the first supporting plates 41 are respectively wrapped on end surfaces of the pouch battery, and the adjacent second supporting plates 42 are detachably connected with the first supporting plates 41 through the connecting members 43; be equipped with first hole 411 of stepping down on the first backup pad 41 to expose laminate polymer battery's utmost point ear welding position through first hole 411 of stepping down, the outer wall of two grip blocks 11 centre gripping second backup pad 42.

Optionally, each second support plate 42 is respectively coated on the side surface of the soft package battery, the adjacent second support plates 42 are detachably connected through a connecting piece 43, the first support plates 41 are respectively coated on the end surfaces of the soft package battery, and the adjacent second support plates 42 are detachably connected with the first support plates 41 through the connecting pieces 43; understandably, through the terminal surface that sets up two first backup pads 41 cladding laminate polymer battery, set up a plurality of second backup pads 42 cladding respectively in laminate polymer battery's side, can form shell structure outside laminate polymer battery, can fix laminate polymer battery's shape, have obvious support fixed action, realize laminate polymer battery's centre gripping through two grip blocks 11 centre grippings on the outer wall of second backup pad 42, further improved the clamp of laminate polymer battery and adorned positioning accuracy.

Optionally, a supporting groove 412 is further formed in the second supporting plate 42, and the supporting groove 412 is matched with a side plate of the pouch battery and used for supporting the side plate of the pouch battery, so that the shape of the pouch battery is better supported and fixed.

Alternatively, the connector 43 may be an elastic connector to clamp the first support plate 41 on the end face of the pouch battery and the second support plate 42 on the side face of the pouch battery; meanwhile, the size difference of each soft package battery in a certain range is allowed, and the adaptability of the fixing component 4 is improved.

The embodiment of the utility model provides a laminate polymer battery utmost point ear welding jig, each grip block 11 is connected with guide assembly 2, and first driving piece 3 is connected with each grip block 11, and each grip block 11 of first driving piece 3 drive respectively moves along guide assembly 2 to make grip block 11 can the relative side of centre gripping laminate polymer battery; through being connected each grip block 11 with guide assembly 2, limited the portable route of two relative grip blocks 11 that set up, through being connected first driving piece 3 with each grip block 11 and moving along guide assembly 2 with each grip block 11 of drive, realized that two grip blocks 11 can be relative be close to or keep away from, and then realized that grip block 11 can be used for the relative side of centre gripping laminate battery. According to the soft package battery tab welding fixture provided by the embodiment, the first driving piece 2 is adopted to drive the clamping plates 11 to move along the guide assembly 2 so as to clamp the opposite side faces of the soft package battery, so that the soft package battery can be clamped and positioned, manual control is replaced, and the clamping and positioning precision of the soft package battery is improved; the problem that the quality of the soft package battery is affected due to the fact that the clamping and positioning accuracy of the welding clamp on the soft package battery is not high, and the situations of partial welding, welding missing and the like can be avoided.

Referring to fig. 1 and 2, further, the guide assembly 2 includes a slide rail 21, a first mounting plate 22 and two slide blocks 23, the slide rail 21 is located on the first mounting plate 22, each slide block 23 is connected to the slide rail 21, and the slide block 23 is connected to the clamping plate 11; the quantity of first driving piece 3 is two, and each first driving piece 3 is connected with first mounting panel 22, and first driving piece 3 is connected with slider 23, and each first driving piece 3 drives different slider 23 respectively and moves along the extending direction relative movement of slide rail 21 to make the relative side of grip block 11 centre gripping laminate polymer battery.

Specifically, the slide rail 21 is positioned on the first mounting plate 22, each slide block 23 is connected to the slide rail 21, and the slide blocks 23 are connected with the clamping plate 11; it can be understood that, by respectively providing the slide rail 21 connected with the first mounting plate 22 and the slide block 23 connected with the clamping plate 11, the clamping plate 11 is slidably connected with the first mounting plate 22, so that the movable path of the two clamping plates 11 is limited, and the clamping precision is prevented from being affected by the deviation of the two clamping plates 11 in the moving process.

Optionally, the number of the first driving members 3 is two, each first driving member 3 is connected to the first mounting plate 22, the first driving members 3 are connected to the sliding blocks 23, and each first driving member 3 drives a different sliding block 23 to move relatively along the extending direction of the sliding rail 21, so that the clamping plate 11 clamps the opposite side surfaces of the pouch battery; it can be understood that each first driving member 3 drives one sliding block 23 to move relatively along the extending direction of the sliding rail 21, and by setting two first driving members 3 to drive the sliding blocks 23 to move respectively, it is possible to control the two clamping plates 11 to move relatively synchronously, and it is possible to control the two clamping plates 11 to move relative to the first mounting plate 22 respectively, that is, the distance that the two first driving members 3 control the two clamping plates 11 to move relative to the first mounting plate 22 respectively may be the same or different.

Optionally, the connection manner of the sliding block 23 and the clamping plate 11 may be various, for example, the sliding block 23 and the clamping plate 11 may be connected by a bolt, the sliding block 23 and the clamping plate 11 may also be connected by welding, and the relative fixation between the sliding block 23 and the clamping plate 11 may be ensured.

The laminate polymer battery utmost point ear welding jig that this embodiment provided through set up slide rail 21 of being connected with first mounting panel 22 and with grip block 11 link block 23 respectively, has realized the injecing to the portable route of two grip blocks 11, through setting up two first driving pieces 3 to make a grip block 11 drive through a first driving piece 3, realized controlling respectively two grip blocks 11's relative movement.

Referring to fig. 1 and 2, further, the welding fixture further includes a rotating assembly 5, the rotating assembly 5 includes a second driving element 51 and a fixing seat 52 connected to the second driving element 51, the fixing seat 52 is connected to the first mounting plate 22, and the second driving element 51 drives the first mounting plate 22 to rotate through the fixing seat 52, so that the clamping assembly 1 rotates around a rotation axis of the second driving element 51.

Specifically, the fixing seat 52 is connected between the first mounting plate 22 and the second driving member 51, and the fixing seat 52 can rotate under the driving action of the second driving member 51, so that the second driving member 51 can drive the clamping assembly 1 connected to the first mounting plate 22 to rotate around the rotation axis of the second driving member 51.

Alternatively, the second driving element 51 can drive the first mounting plate 22 to rotate through a plurality of angles through the fixing seat 52, for example, the second driving element 51 can drive the first mounting plate 22 to rotate 180 degrees, so as to weld two end faces of the pouch battery respectively through the same welding machine.

Alternatively, the fixing seat 52 may be a rotating shaft, and the second driving member 51 may be a driving motor, the rotating shaft is vertically fixed on the first mounting plate 22, the rotating shaft is connected with the driving motor, and the driving motor drives the rotating shaft to rotate, so that the first mounting plate 22 and the clamping assembly 1 connected to the first mounting plate 22 rotate around the rotating shaft of the second driving member 51.

Alternatively, the second driving member 51 may be fixedly connected to the frame of the welding fixture or fixedly connected to the wall, so as to fix the position of the second driving member 51.

The soft-package battery tab welding jig provided by this embodiment is through setting up second driving piece 51, the fixing base 52 of being connected with second driving piece 51 to be connected fixing base 52 and first mounting panel 22, make and to drive first mounting panel 22 rotatory through second driving piece 51, and then make centre gripping subassembly 1 rotate around the rotation axis of second driving piece 51.

Referring to fig. 1 and 4, further, the welding fixture further comprises a positioning assembly 6 and a buffer assembly 7, the positioning assembly 6 comprises a welding ram 61, a second mounting plate 62, a connecting plate 63 and a third driving member 64, the welding ram 61 and the connecting plate 63 are connected through the buffer assembly 7, the connecting plate 63 and the second mounting plate 62 are connected with the third driving member 64, and the third driving member 64 drives the connecting plate 63 to move towards the welding ram 61; the connecting plate 63 is provided with a second abdicating hole 631, the welding ram 61 is provided with a welding channel 611 for a welding gun of the welding machine to pass through, and the second abdicating hole 631 is arranged opposite to the welding channel 611.

Specifically, the welding ram 61 is connected with the connecting plate 63 through the buffer assembly 7, the connecting plate 63 and the second mounting plate 62 are connected with the third driving member 64, and the third driving member 64 drives the connecting plate 63 to move towards the welding ram 61; it can be understood that the connecting plate 63 is connected with the second mounting plate 62 through the third driving member 64, the welding ram 61 is connected on the connecting plate 63, and the third driving member 64 drives the connecting plate 63 to move towards the welding ram 61, so as to drive the welding ram 61 to move towards the soft battery.

Optionally, a second abdicating hole 631 is formed in the connecting plate 63, the welding ram 61 has a welding channel 611 for a welding gun of the welding machine to pass through, and the second abdicating hole 631 is arranged opposite to the welding channel 611; as can be understood, the second abdicating hole 631 is communicated with the welding channel 611, and a welding gun of the welding machine can weld the welding position of the pouch battery sequentially through the second abdicating hole 631 and the welding channel 611.

Optionally, the welding pressure head 61 may abut against a bus cover plate of the pouch battery located around the welding position, the welding pressure head 61 is configured to fix the tab and the bus plate to be welded, and after the welding pressure head 61 abuts against the pouch battery, the welding position is exposed through the welding channel 611, so that the tab and the bus plate are welded by the welding machine.

Alternatively, the welder may be a laser welder, and the welding torch of the welder may be a laser head of the laser welder.

In this embodiment, the second mounting plate 62 may be further connected to a robot arm, the robot arm controls the movement of the positioning assembly 6 through the second mounting plate 62, so that the welding channel 611 corresponds to the welding position on the pouch battery, the welding pressure head 61 is pressed against the welding position of the pouch battery under the driving action of the third driving element 64 and the buffering protection action of the buffering assembly 7, and the welding gun of the welding machine welds the tab and the busbar through the welding channel 611; after welding is accomplished to utmost point ear and busbar on a terminal surface of laminate polymer battery, it is rotatory to drive centre gripping subassembly 1 through rotating assembly 5, carries out welding operation again to utmost point ear and busbar on another terminal surface of laminate polymer battery.

Referring to fig. 3, optionally, two third driving members 64 and two second mounting plates 62 are provided, each third driving member 64 is connected to a different second mounting plate 62, two third driving members 64 are connected to the connecting plate 63, and the third driving members 64 are respectively located at opposite sides of the second abdicating hole 631; by providing two third drivers 64 and two second mounting plates 62 to drive the connecting plate 63 to move towards the welding ram 61, the movement of the connecting plate 63 can be made more smooth.

Referring to fig. 1 and 3, alternatively, the buffer assembly 7 includes a spring 71, a connecting pin 72 and a fixing piece 73, the connecting pin passes through the connecting plate 63 and the welding ram 61 in sequence and then is connected with the fixing piece 73, the spring 71 is sleeved on the connecting pin 72, and the spring 71 is located between the welding ram 61 and the connecting plate 63; the connecting pin 72 should have a plug at one end, and during installation, the end of the connecting pin 72 without the plug can be inserted through the connecting plate 63, the spring 71 is sleeved on the connecting pin 72, the connecting pin 72 is inserted through the welding ram 61, and finally, the end of the connecting pin 72 without the plug is connected with the fixing member 73, so as to realize the telescopic connection between the welding ram 61 and the connecting plate 63. When the welding pressure head 61 supports on laminate polymer battery, spring 71 passes through elastic support between welding pressure head 61 and connecting plate 63, plays the buffering guard action, avoids welding pressure head 61 to support laminate polymer battery's dynamics too big, causes the damage to laminate polymer battery.

Alternatively, the buffer assembly 7 may also only include the spring 71 and the connecting pin 72, and the connecting pin 72 is connected to the welding ram 61 after sequentially passing through the connecting plate 63 and the spring 71, so that the welding ram 61 can be telescopically connected to the connecting plate 63.

Referring to fig. 4, alternatively, the number of the buffer assemblies 7 is two, and the two buffer assemblies 7 are respectively connected to opposite sides of the connecting plate 63; the buffer assemblies 7 are respectively arranged on the opposite sides of the connecting plate 63, so that when the welding pressure head 61 abuts against the soft package battery, the welding pressure head 61 can be stressed uniformly.

Alternatively, the fixing member 73 may be various, for example, the fixing member 73 may be a fixing pin, a fixing nut.

According to the soft package battery tab welding fixture provided by the embodiment, the welding position on the soft package battery is positioned by arranging the positioning assembly 6, so that a welding channel 611 for a welding gun of a welding machine to pass through is formed; buffering subassembly 7 has certain scalable scope along welding passageway 611 direction, and when welding pressure head 61 supported on laminate polymer battery's welding position, buffering subassembly 7 can play the buffering guard action, and it is too big to avoid welding pressure head 61 to support laminate polymer battery's dynamics, causes the damage to laminate polymer battery.

Referring to fig. 1 and 3, further, the inner surface of the second support plate 42 is in contact with the side of the pouch cell, and the inner surface of the second support plate 42 is matched with the side of the pouch cell.

Specifically, second backup pad 42 internal surface contacts with laminate polymer battery's side, and the internal surface of second backup pad 42 and laminate polymer battery's side, and it can be understood that second backup pad 42 can laminate with laminate polymer battery's side to a plurality of second backup pads 42 cover laminate polymer battery's side after connecting through connecting piece 43, in order to reduce the damage that welding slag splashes to laminate polymer battery side among the welding process.

Optionally, the area of first hole 411 of stepping down can be as little as possible, can expose laminate polymer battery's utmost point ear welding position can to make first backup pad 41 the terminal surface of the cladding laminate polymer battery as much as possible, improve the terminal surface support to laminate polymer battery, reduce the damage that the welding slag splashes to laminate polymer battery terminal surface simultaneously.

Referring to fig. 2 to 3, further, a first limiting portion 111 is disposed on the clamping plate 11, and a second limiting portion matched with the first limiting portion 111 is disposed on an outer surface of the second supporting plate 42; through setting up the spacing portion of the first spacing portion 111 of matched with and the spacing portion of second for when the different fixed subassemblies 4 of centre gripping board 11 centre gripping, also can guarantee to press from both sides the unity of dress position, and then improve the clamp dress positioning accuracy to laminate polymer battery.

Referring to fig. 3, further, the connecting member 43 is a buckle 431.

Specifically, the adjacent second support plates 42 are detachably connected through the buckles 431 to be wrapped on the side surfaces of the pouch battery, and the adjacent second support plates 42 are detachably connected with the first support plate 41 through the buckles 431 to be wrapped on the end surfaces of the pouch battery; the adjacent second support plates 42 and first support plates 41 are connected by the buckles 431, so that the fixing assembly 4 can be assembled and disassembled conveniently.

Optionally, the connecting member 43 further includes a connecting portion 432, the connecting portion 432 is disposed on an outer wall of the second support plate 42, and the buckle 431 is connected with the second support plate 42 through the connecting portion 432. Optionally, the connecting portion 432 may serve as a second limiting portion, the connecting portion 432 protrudes out of the outer wall of the second supporting plate 42, the first limiting portion 111 may be a limiting groove 111 formed in the opposite side wall of the clamping plate 11, the limiting groove 111 is matched with the connecting portion 432, when the clamping plate 11 clamps the outer wall of the fixing component 4, the connecting portion 432 is matched with the limiting groove 111 to achieve positioning, so that clamping positions can be kept uniform when the clamping plate 11 clamps the fixing component 4 at each time, and clamping positioning accuracy of the soft package battery is improved.

When the soft package battery tab welding fixture provided by the embodiment is used, the first supporting plate 41 and the second supporting plate 42 are detachably coated on the outer side of the soft package battery, and the tab welding position of the soft package battery is exposed through the first abdicating hole 411; then, the clamping plate 11 is driven by the first driving part 3 to move relatively along the extending direction of the slide rail 21, so that the clamping plate 11 clamps and covers the outer wall of the second supporting plate 42 on the opposite side surface of the soft package battery, and meanwhile, the positioning of the soft package battery is realized by the matching of the limiting groove 111 arranged on the clamping plate 11 and the connecting part 432 on the outer wall of the second supporting plate 42, so that the clamping plate 11 can clamp the soft package battery more accurately; finally, the positioning assembly 6 is controlled to move through the second mounting plate 62, so that after the welding channel 611 corresponds to the welding position on the pouch cell, the welding pressure head 61 is pressed on the welding position of the pouch cell under the driving action of the third driving member 64 and the buffering protection action of the buffering assembly 7, and the welding gun of the welding machine performs welding operation on the tabs and the busbars through the welding channel 611. When welding operation needs to be carried out on the other end face of the soft package battery, the second driving piece 51 drives the fixing seat 52 to rotate, so that the clamping assembly 1, the fixed assembly 4 clamped by the clamping assembly and the soft package battery rotate around the rotation axis of the second driving piece 51, and the welding machine can carry out welding operation on the other end face of the soft package battery.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, which are used to indicate the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A soft package battery tab welding fixture is characterized by comprising a clamping assembly, a guide assembly and a first driving piece,

the clamping assembly comprises two clamping plates which are oppositely arranged, each clamping plate is connected with the guide assembly, the first driving piece is connected with each clamping plate, and the first driving piece drives each clamping plate to move along the guide assembly respectively, so that the clamping plates clamp opposite side faces of the soft package battery.

2. The welding fixture of claim 1, wherein the guide assembly comprises a slide rail, a first mounting plate, and two slide blocks, wherein the slide rail is positioned on the first mounting plate, each slide block is connected to the slide rail, and the slide blocks are connected to the clamping plate;

the number of the first driving pieces is two, each first driving piece is connected with the first mounting plate, the first driving pieces are connected with the sliding blocks, and each first driving piece drives the different sliding blocks to move relatively along the extending direction of the sliding rail, so that the clamping plates clamp the opposite side faces of the soft package battery.

3. The welding fixture of claim 2, further comprising a rotation assembly, wherein the rotation assembly comprises a second driving member and a fixed seat connected to the second driving member, the fixed seat is connected to the first mounting plate, and the second driving member drives the first mounting plate to rotate through the fixed seat, so that the clamping assembly rotates around a rotation axis of the second driving member.

4. The welding fixture of any of claims 1-3, further comprising a securing assembly,

the fixing assembly comprises two first supporting plates, a plurality of second supporting plates and a plurality of connecting pieces, each second supporting plate is respectively coated on the side face of the soft package battery, the adjacent second supporting plates are detachably connected through the connecting pieces, the first supporting plates are respectively coated on the end face of the soft package battery, and the adjacent second supporting plates are detachably connected with the first supporting plates through the connecting pieces;

be equipped with the first hole of stepping down in the first backup pad, in order to pass through the first hole of stepping down exposes laminate polymer battery's utmost point ear welding position, two the grip block centre gripping the outer wall of second backup pad.

5. The welding fixture of claim 4, further comprising a positioning assembly and a dampening assembly,

the positioning assembly comprises a welding pressure head, a second mounting plate, a connecting plate and a third driving piece, the welding pressure head is connected with the connecting plate through a buffer assembly, the connecting plate and the second mounting plate are connected with the third driving piece, and the third driving piece drives the connecting plate to move towards the welding pressure head;

the welding pressure head is provided with a welding channel for a welding gun of a welding machine to pass through, and the second yielding hole is opposite to the welding channel.

6. The welding fixture of claim 5, wherein the number of the third drivers and the second mounting plate is two, each of the third drivers is connected to a different one of the second mounting plates, both of the third drivers are connected to the connecting plate, and the third drivers are located on opposite sides of the second relief hole.

7. The welding fixture of claim 5, wherein the buffer assembly comprises a spring, a connecting pin and a fixing member, the connecting pin sequentially penetrates through the connecting plate and the welding ram and then is connected with the fixing member, the spring is sleeved on the connecting pin, and the spring is located between the welding ram and the connecting plate.

8. The welding fixture of claim 7, wherein the number of the buffer assemblies is two, and two buffer assemblies are respectively connected to opposite sides of the connection plate.

9. The welding fixture of claim 4, wherein the inner surface of the second support plate is in contact with the sides of the pouch cell and the inner surface of the second support plate is mated with the sides of the pouch cell.

10. The welding fixture of claim 4, wherein a first limiting portion is arranged on the clamping plate, and a second limiting portion matched with the first limiting portion is arranged on the outer surface of the second supporting plate.

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