CN107009026B - A kind of welding technique and device of power battery monomer - Google Patents

A kind of welding technique and device of power battery monomer Download PDF

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Publication number
CN107009026B
CN107009026B CN201710350945.XA CN201710350945A CN107009026B CN 107009026 B CN107009026 B CN 107009026B CN 201710350945 A CN201710350945 A CN 201710350945A CN 107009026 B CN107009026 B CN 107009026B
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China
Prior art keywords
bending
plate
tab
clamping
jig
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CN201710350945.XA
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Chinese (zh)
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CN107009026A (en
Inventor
卢雨龙
潘泽洵
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FAW Group Corp
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FAW Group Corp
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Priority to CN201710350945.XA priority Critical patent/CN107009026B/en
Publication of CN107009026A publication Critical patent/CN107009026A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003—Positioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention discloses a kind of welding techniques of power battery monomer, including battery cell assembling, tab bending and fitting compress, bilateral laser welding and electric connecting sheet bending position.The invention also discloses a kind of welders of power battery monomer, including ceiling plate portion, clamping device, tab pressing plate, tab bending clamp, rotary welding clamp, electric connecting sheet bending clamp.In the present invention, entire welding process is semi-automatic operation, operation control hydraulic drive mechanism is carried out by button to complete, whole process is simple and easy, it is decomposed by the refinement of Rational choice to technique, process, the security protection in operating process, the precision-fit between executing agency finally guarantee monomer Laser Welding Quality and process consistency, and in the production of battery module small lot or trial-manufacturing process can effective improving production efficiency, control security risk and reduce cost.

Description

A kind of welding technique and device of power battery monomer
Technical field
The invention belongs to the design of power battery monomer laser welding process and the technical fields of design of welding jig, specifically relate to And a kind of welding technique and device for producing or manufacturing experimently for Soft Roll power battery module small lot.
Background technique
Current main-stream power battery monomeric form is divided into Soft Roll, rectangular hard shell and cylinder etc., wherein rectangular hard shell battery And cylindrical battery itself has and enough strength structure intensity and is easy to fixed, it is only necessary to additional electric connecting sheet carry out welding or It is spirally connected to realize that the series and parallel between monomer connects, it is relatively easy to implement.Soft Roll monomer is tired by the positioning of the reasons such as shape and structure Hardly possible, positive and negative anodes tab matter is soft and stretches out, the not first-class factor limitation of position distribution, in welding manner, welding procedure, welding effect There are certain technical difficulty for rate and welding quality control etc..Therefore, the product of domestic mainstream battery producer is more at present For rectangular hard shell form, Soft Roll monomeric form is using less.However, compared to the power battery monomer of rectangular hard shell form, it is soft Packet battery has the characteristics that have a safety feature, light-weight, capacity is big, internal resistance is small and flexible design, if it is possible to overcome soft The technical issues of packet monomer welding etc., it will so that Soft Roll monomer is more market-oriented.
It would therefore be highly desirable to need to study so as to more power battery Soft Roll monomer laser welding and design of welding jig It is economical easily to produce the soft package battery module for meeting the market demand.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of can conveniently and efficiently realize between multiple soft-package battery monomers The welding technique of the power battery monomer of laser welding and the device for realizing the process.
The technical solution adopted by the present invention are as follows:
One embodiment of the present of invention provides a kind of welding technique of power battery monomer, the power battery monomer The soft-package battery monomer of two sides is distributed in for tab, the welding technique the following steps are included:
S100: battery cell assembling
Multiple battery cell groups are carried out assembling positioning and clamped to form a battery module, each battery cell group is by two A battery cell combines to be formed according to scheduled arrangement；
S200: tab bending and compression
The two sides tab of battery cell group after clamping is subjected to bending process, and after all tabs are bent over, it is right All tabs carry out compression processing；
S300: bilateral laser welding
Carry out laser welding to treated battery cell group two sides are compressed, including to battery module two sides tab and The laser welding of positive and negative electrode electric connecting sheet, wherein after completing to the laser welding of the side of battery cell group, pass through rotation The battery cell group to carry out laser welding to the other side of battery cell group；
S400: electric connecting sheet bending positioning
Positive electric connecting sheet and cathode electric connecting sheet each bending respectively inwards to the battery module after laser welding 90°。
Another embodiment of the present invention provides a kind of welder of power battery monomer, is distributed in two for realizing tab The welding of the soft-package battery monomer of side, comprising: ceiling plate portion, for two battery cells to be clamped to form a battery cell group, Including mutually matched upper cover plate and lower cover plate, the upper cover plate and the lower cover plate are by clamping structure with by two battery lists Body clamps to form a battery cell group；Clamping device, for assembling multiple ceiling plate portion for being clamped with battery cell group It positions and clamps to form a battery module, be formed with the limit limited to the ceiling plate portion on the clamping device Slot, and the isolation structure for separating the tab of two adjacent battery cells is provided in two sides；Tab bending clamp, for that will fill The tab for being clipped in the battery cell group two sides in the clamping device carries out bending processing, and the tab bending clamp, which is formed with, to be put The first accommodating space of the clamping device is set, the clamping device is slided by the first guide frame and the first position limiting structure And it is fixed on first accommodating space, the tab bending clamp is realized by being arranged in the bending mechanism of two sides to battery The bending of the tab of monomer group two sides is handled；Tab pressing plate, for matching with the clamping device to after bending is handled Tab carry out compression processing, the tab pressing plate is in close contact to press by the first buckle structure with the isolation structure The tab being tightly clamped between tab pressing plate and isolation structure；Rotary welding clamp, for the electricity to clamping in clamping device The two sides of pond monomer group carry out laser welding, are fixedly connected with the clamping device by adjustable fixed mechanism, in completion pair After the laser welding of the side of battery cell group, the clamping device is rotated with right by adjusting the adjustable fixed mechanism The other side of battery cell group carries out laser welding；Electric connecting sheet bending clamp, for by clamping in the clamping device 90 ° of bending, the electric connecting sheet bending clamp are formed the positive electric connecting sheet and cathode electric connecting sheet of battery module respectively inwards There is the second accommodating space for placing the clamping device, the clamping device passes through the second guide frame and the second position limiting structure Slide and be fixed on second accommodating space, the electric connecting sheet bending clamp is realized pair by electric connecting sheet bending mechanism The bending of positive electric connecting sheet and cathode electric connecting sheet is handled.
Optionally, the side of the upper cover plate and lower cover plate protrusion is formed with the support for supporting the battery cell Portion, the clamping structure include the multiple protrusions being formed on the support portion of the upper cover plate or the lower cover plate and are formed in institute State multiple card holes matched with the bulge on lower cover plate or upper cover plate；Shape is gone back on the upper cover plate and the lower cover plate At having reinforcing rib and concaveconvex structure, the concaveconvex structure is for realizing the clamping between multiple ceiling plate portion.
Optionally, the clamping device includes clamping device bottom plate, the right baffle-plate being arranged on clamping device bottom plate, right gear Plate, front apron, rear baffle and top plate, the top plate are connect by pivot structure with the rear baffle and are led to the front apron Cross the connection of the second buckle structure, the rear baffle connect with the clamping device bottom plate by pivot structure, the right baffle-plate with It is respectively arranged with the isolation structure in the right shell body, and is respectively formed with the resettlement groove for placing the tab pressing plate, it is described Isolation structure includes the multiple blend stops separated with preset distance, and width and two battery cells between two neighboring blend stop The distance between it is corresponding.
Optionally, the tab bending clamp includes tab bending clamp bottom plate, is arranged at tab bending clamp bottom The bending mechanism of plate two sides, wherein the bending mechanism includes connecting plate, the first driving structure, the second driving structure, third drive Dynamic structure, the first bending pawl and pawl with the second bending, and first driving structure and second driving structure are arranged in institute It states on connecting plate, pawling to pawl with second bending with first bending respectively connect, and first bending is driven to push away Pawl and second bending are pawled and are moved in a longitudinal direction, and the third driving structure is connect with the connecting plate, and is driven Connecting plate integrally moves in the horizontal direction vertical with the longitudinal direction.
Optionally, first guide frame includes prominent guiding axis and the formation being formed on the clamping device bottom plate Pilot hole on the tab bending clamp bottom plate, first position limiting structure include limit knob and are respectively formed at described Through-hole on clamping device bottom plate and the tab bending clamp bottom plate, the limit knob include that the portion that screws and protrusion are formed in The thread spindle screwed in portion, by the thread spindle is placed in the through hole and is tightened it is described screw portion and realize institute State being fixedly connected for clamping device and the tab bending clamp.
Optionally, the rotary welding clamp includes supporting table and be fixedly connected with fixed plate on the supporting table, institute The limited block for being formed in fixed plate and being limited to the clamping device is stated, the adjustable fixed structure includes adjusting rotation Button, is formed in the through-hole that the guiding axis is inserted into the fixed plate at the guiding axis being formed on the clamping device bottom plate, Threaded hole is formed on the guiding axis, the adjusting knob includes that the portion of screwing and protrusion are formed in the screw thread screwed in portion Axis realizes the clamping device and the rotation and screwing portion described in the thread spindle is inserted into the threaded hole and is tightened Turn being fixedly connected for welding fixture.
Optionally, the electric connecting sheet bending clamp includes electric connecting sheet bending clamp bottom plate and is arranged in the electrical connection Support frame on piece bending clamp bottom plate is provided with the first electric connecting sheet bending mechanism and the second electric connecting sheet on support frame as described above Bending mechanism；The first electric connecting sheet bending mechanism includes bending push jack, first drives upside down structure, front and back driving structure, Described first drives upside down structure connect with the front and back driving structure, for realizing moving up and down for the bending push jack, institute It states front and back driving structure to connect with the bending push jack, for realizing the back-and-forth motion of the bending push jack；Described second is electrically connected Contact pin bending mechanism drives upside down structure, connecting plate, two or so driving structures, limit plate and two bending pieces including second, Described two left and right driving structures are connect with described two bending pieces respectively, are moved for realizing the left and right of described two bending pieces Dynamic, the limit plate and described two left and right driving structures are connect with the connecting plate, and described second drives upside down structure and institute Connecting plate connection is stated, is moved up and down for realizing the connecting plate is whole；Wherein, the bending push jack is described about first Make the positive electric connecting sheet and the inside bending of cathode electric connecting sheet under the driving of driving structure and the front and back driving structure 45 °, make under the driving that the limit plate and the bending piece drive upside down structure and the left and right driving structure described second The anode electric connecting sheet and cathode electric connecting sheet continue inside bending to 90 °.
Optionally, second guide frame includes prominent guiding axis and the formation being formed on the clamping device bottom plate Pilot hole on the electric connecting sheet bending clamp bottom plate, second position limiting structure include limit knob and are respectively formed at Through-hole on the clamping device bottom plate and the electric connecting sheet bending clamp bottom plate, the limit knob include the portion that screws and dash forward It is formed in the thread spindle screwed in portion out, described screws portion by placing in the through hole and tightening by the thread spindle And realize being fixedly connected for the clamping device and the electric connecting sheet bending clamp.
The invention has the following beneficial effects: by Rational choice, process to technique refinement decomposition, in operating process Security protection, the precision-fit between executing agency finally guarantee monomer Laser Welding Quality and process consistency, and Battery module small lot production or trial-manufacturing process in can effective improving production efficiency, control security risk and reduce at This.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the welder for the power battery monomer that one embodiment of the invention provides.
Fig. 2 is the structural schematic diagram of the ceiling plate portion of the welder for the power battery monomer that one embodiment of the invention provides.
Fig. 3 is the structural representation of the clamping device of the welder for the power battery monomer that one embodiment of the invention provides Figure.
Fig. 4 is that the structure of the tab bending clamp of the welder for the power battery monomer that one embodiment of the invention provides is shown It is intended to.
Fig. 5 is that the structure of the rotary welding clamp of the welder for the power battery monomer that one embodiment of the invention provides is shown It is intended to.
Fig. 6 is the schematic diagram that the tab of the welder for the power battery monomer that one embodiment of the invention provides compresses.
Fig. 7 and Fig. 8 is the electric connecting sheet bending folder of the welder for the power battery monomer that one embodiment of the invention provides The structural schematic diagram of tool.
Fig. 9 is the flow diagram of the welding technique for the power battery monomer that one embodiment of the invention provides.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool Body embodiment is described in detail.
It is situated between first in conjunction with welder of the attached drawing 1 to Fig. 9 to the power battery monomer that one embodiment of the invention provides It continues.
As shown in Figures 1 to 9, the welder of a kind of power battery monomer provided in an embodiment of the present invention, for realizing Tab is distributed in the welding of the soft-package battery monomer 1 of two sides, which includes ceiling plate portion 2, is used for two battery cells Clamping forms a battery cell group, including mutually matched upper cover plate 201 and lower cover plate 202, the upper cover plate and it is described under Cover board is by clamping structure to clamp to form a battery cell group by two battery cells；Clamping device 3 is used for multiple folders The ceiling plate portion 2 for holding battery cell group carries out assembling positioning and clamps to form a battery module, shape on the clamping device At there is a limiting slot limited to the ceiling plate portion 2, and the tab for separating two adjacent battery cells is provided in two sides Isolation structure 307；Tab bending clamp 4, the tab for the battery cell group two sides by clamping in the clamping device Bending processing is carried out, the tab bending clamp is formed with the first accommodating space for placing the clamping device, the clamping folder Tool slides by the first guide frame and the first position limiting structure and is fixed on first accommodating space, the tab bending folder Tool realizes that the bending to the tab of battery cell group two sides is handled by being arranged in the bending mechanism of two sides；Tab pressing plate 9 is used In being matched with the clamping device 3 with to through bending treated tab carries out compression processing, the tab pressing plate passes through the One buckle structure and be in close contact with the isolation structure to tab of the compression clamping between tab pressing plate and isolation structure； Rotary welding clamp 5, the two sides for the battery cell group to clamping in clamping device carry out laser welding, with the clamping Fixture 3 is fixedly connected by adjustable fixed mechanism, after completing to the laser welding of the side of battery cell group, passes through adjusting The adjustable fixed mechanism carries out laser welding to rotate the clamping device with the other side to battery cell group；Electrical connection Piece bending clamp 7, positive electric connecting sheet and cathode electric connecting sheet for the battery module by clamping in the clamping device 3 90 ° of bending respectively inwards, the electric connecting sheet bending clamp is formed with the second accommodating space for placing the clamping device, described Clamping device slides by the second guide frame and the second position limiting structure and is fixed on second accommodating space, described to be electrically connected Contact pin bending clamp realizes that the bending to positive electric connecting sheet and cathode electric connecting sheet is handled by electric connecting sheet bending mechanism.
In addition, the welder of power battery monomer provided by the invention further includes providing the distribution box 6 of electric energy and to pole The control button box 8 that the operation of ear bending clamp 4 and electric connecting sheet bending clamp 7 is controlled.Tab bending clamp 4 is electrically connected Contact pin bending clamp 7 and control button box 8 may be arranged on same operating platform.
Further, as shown in Fig. 2, the side of the upper cover plate 201 and the lower cover plate 202 is prominent to be formed with support institute The support portion of battery cell 1 is stated, the clamping structure includes being formed on the support portion of the upper cover plate or the lower cover plate Multiple protrusions and the multiple card holes matched with the bulge being formed on the lower cover plate or upper cover plate, protrusion can be pre- Fixed interval is formed in upper cover plate, and perhaps aperture is formed in lower cover plate or upper cover plate accordingly on two support portions of lower cover plate Corresponding position, by the clamping of protrusion and aperture being mutually clamped to realize upper cover plate and lower cover plate, to realize to battery list The Set and Positioning of body；Reinforcing rib and concaveconvex structure are also formed on the upper cover plate and the lower cover plate, the concaveconvex structure is used In realizing the clamping between multiple ceiling plate portion, i.e., load be clamped with the cover board of battery cell when, can will be on one of cover board Lug boss and shrinkage pool be inserted into the corresponding shrinkage pool and lug boss of adjacent cover board, thus realize between cover board assembly limit Position.Upper cover plate 201 and lower cover plate 202 are integrally formed into plate, can be stamping by aluminum alloy material.Due to single soft-package battery By self structure prolate and soft limited of matter is difficult to carry out it accurate positioning clamping, and the present invention uses upper cover plate and lower cover plate Clamping soft-package battery monomer is cooperated to, so as to realize the accurate Set and Positioning of battery cell.2 clamping of ceiling plate portion it is every Two monomers in a monomer group can be according to the adjustable positive and negative electrode tab direction of form of series, parallel, for example, connecting Under form, anode/cathode of a battery cell and cathode/anode of another battery cell are arranged in the same side；In parallel connection Under form, then the anode of two battery cells, cathode are arranged in the same side.
Further, as shown in figure 3, the clamping device 3 include bottom plate 301, be arranged on bottom plate right baffle-plate 302, Right shell body 303, front apron 305, rear baffle 304 and top plate 306, the top plate 306 pass through pivot structure with the rear baffle 304 It connects and is connect with the front apron 305 by the second buckle structure, the rear baffle 304 passes through shaft with the bottom plate 301 Structure connects, and is respectively arranged with the isolation structure 307 on the right baffle-plate 302 and the right shell body 303, and be respectively formed with The resettlement groove of the tab pressing plate 9 is placed, the isolation structure includes the multiple blend stops separated with preset distance, two neighboring gear Width between item is corresponding with the distance between two battery cells.Optionally, isolation structure can be insulated by bakelite material etc. Material is made, mechanical strength, good insulating properties, heat-resisting, corrosion-resistant, for the tab of two neighboring monomer to be separated, It prevents tab short circuit phenomenon occur during installation monomer group, guarantees safety.
Using ceiling plate portion 2 by two battery cell Set and Positionings after, the limit that is placed on the bottom plate 301 of clamping device 3 In the slot of position, cooperation positioning is carried out using the side edge of upper cover plate and lower cover plate, to guarantee the accurate of each battery cell group Clamping, the tab of each battery cell are placed in the opening of corresponding isolation structure 307, then pass through the second buckle structure Top plate 306 and front apron 305 are fixed together, realize the clamping of battery cell group.In one embodiment of the present of invention In, clamping device 3 is used for 4 ceiling plate portion of clamping simultaneously, i.e. the soft-package battery monomer of 8 tab two sides of clamping distribution, but not It is confined to this, also can according to need the ceiling plate portion of other numbers of clamping.
It should be noted that the first buckle structure and the second buckle structure that the present invention uses can be lock in the prior art Buckle structure, as long as can be realized latching function.In one embodiment of the invention, the first buckle structure may include being formed In the engaging portion on the tab pressing plate 9 and it is formed in being adapted in the right baffle-plate/right shell body with the engaging portion Mounting part, being fixedly connected for tab pressing plate 9 and clamping device 3 is realized by the way that mounting part to be linked into engaging portion, such as Fig. 6 institute Show, the second buckle structure may include the engaging portion being formed on front apron and be formed on top plate compatible with the engaging portion Being fixedly connected for top plate 306 and front apron 305 is realized by the way that mounting part to be linked into engaging portion in mounting part.
Further, as shown in figure 4, the tab bending clamp 4 includes bottom plate 401, is arranged in 401 two sides of bottom plate Bending mechanism, wherein the bending mechanism includes connecting plate 402, the first driving structure 404, the second driving structure 406, Three driving structures 408, the first bending pawl 405 and second bending pawl 407, first driving structure 404 and described second Driving structure 406 is arranged on the connecting plate 402, pawl respectively with first bending 405 and second bending pawl 407 connections, and drive first bending pawl 405 and second bending pawl and 407 move in a longitudinal direction, described the Three driving structures 408 are connect with the connecting plate 402, and it is whole in the level side vertical with the longitudinal direction to be drivingly connected plate It moves up.In one embodiment of the invention, the first driving structure, the second driving structure and third driving structure can be gas Cylinder.First bending of the invention, which pawls to pawl with the second bending, can be configured to arrange that shape is adapted with the tab of battery cell group Shape, for example, formed have predetermined space dentalation.
Further, first guide frame may include that protrusion is formed in leading on the bottom plate 301 of the clamping device 3 To axis (not shown) and the pilot hole 403 that is formed on the bottom plate of the tab bending clamp, first position limiting structure include Limit knob 308 and the through-hole being respectively formed on the bottom plate of the clamping device and the bottom plate of the tab bending clamp, institute The thread spindle that limit knob 308 includes the portion that screws with screwed in portion described in prominent be formed in is stated, by placing the thread spindle In the through-hole on the bottom plate 401 of bottom plate 301 and tab bending clamp and tightens and described screw portion and realize the clamping device With being fixedly connected for the tab bending clamp, screw thread compatible with the screw thread on thread spindle can be formed on through-hole.It is preferred that Ground, pilot hole 403 are formed by cutting a part of bottom plate 401, are one end open strip aperture closed at one end, guiding Hole 403 is formed with the semicircular in shape being adapted with guiding axis in closed one end, limits for realizing to guiding axis.Guiding axis It is formed as cylindric, and offers the threaded hole being recessed inwardly in the axial direction, consolidate for realizing with rotary welding clamp Fixed connection (then introducing), that is to say, that the guiding axis of clamping device not only acts as guiding role, also serves as the portion being connected and fixed Part.In addition, the through-hole on bottom plate 301 may be formed on bottom plate close to a side angle region in 302 outside of right baffle-plate.
Specifically, after clamping device 3 is completed to the clamping operation of battery cell group, control button box 8 is operated to drive Then clamping device 3 is packed into tab to drive connecting plate to be integrally displaced outwardly in the horizontal direction to two sides by third driving structure Guiding axis is put into pilot hole 403 and slides it in pilot hole 403 by bending clamp 4, when guiding axis slides into pilot hole When 403 closed end, the assembly of instruction clamping device in place, then will be logical on the thread spindle alignment bottom plate 401 for limiting knob 308 Hole and rotate screw portion to realize the fixation of clamping device 3 and tab bending clamp 4.Later, driving third driving structure is along water Square to moving inward, to be aligned with the two sides tab of battery cell group, the first driving structure is driven then to drive the first folding Curved pawl moves inward along the longitudinal direction from side, by the tab bending of side on the blend stop of isolation structure, then drives Second driving structure is moved with driving the second bending to pawl from the other side along with the first bending opposite direction of moving direction of pawling, To overlap the tab bending of the other side on the tab on the blend stop of isolation structure, two layers of extreme ear structure of overlapping is formed.
After tab is bent in two sides, limit knob is unclamped, clamping device 3 is exited from tab bending clamp 4, is connect , it compresses as shown in figure 5, being bonded the tab after bending using tab pressing plate 9, so that the pressing before being welded positions, makes Monomer tab fits closely, and guarantees Laser Welding Quality.Specifically, tab pressing plate 9 is placed on right baffle-plate 302 and right shell body 303 Resettlement groove in, be then locked by the first buckle structure, the tab pressing plate 9 after locking and right baffle-plate 302 and The isolation structure of right shell body 303 cooperates at squash type, thus two layers of tab of the overlapping being clipped between pressing plate and isolation structure Carry out compression fitting.
Further, as shown in fig. 6, the rotary welding clamp 5 may include supporting table 501 and be fixedly connected on the branch Support the fixed plate 502 on platform, be formed with the limited block 503 limited to the clamping device in the fixed plate, it is described can Adjustment fixing structure includes adjusting knob, the guiding axis being formed on the clamping device, is formed in the fixed plate to insert Enter the through-hole of the guiding axis, the adjusting knob includes that the portion of screwing and protrusion are formed in the thread spindle screwed in portion, spiral shell Line axis is formed with screw thread compatible with the threaded hole of guiding axis, by the way that the thread spindle to be inserted into the threaded hole of guiding axis simultaneously It tightens and described screw portion and realize being fixedly connected for the clamping device and the rotary welding clamp.In this way, rotating welding is pressed from both sides Tool 5 can form axis-limit block mode with clamping device 3 and be fixed, and ensure that face of weld is smooth.Specifically, clamping is pressed from both sides Tool 3 is placed in region defined by limited block 503 and is connected by the way that fixed structure is adjusted and realizes with the fixed of fixed plate 502 Connect, then by accurately control laser-beam welding machine plumb joint translating stroke come according to the complete battery pair in scheduled welding position The laser welding of the side of monomer group, including monomer tab with need to go here and there therewith (simultaneously) connection monomer tab, monomer tab and electricity Pond module positive and negative electrode electric connecting sheet.Later, slightly loosen adjustable fixed structure screws portion, so that clamping device 3 is around screw thread Axis tightens the portion of screwing after rotating 180 ° again, in this way, without taking battery cell group, passing through after having welded the tab of side It rotates clamping device and realizes the laser welding to the other side, saved the time of dismounting clamping device, and be effectively prevented and tear open There is monomer group during dress clamping device to fall off caused safety problem.The present invention can be used common laser-beam welding machine come into Row welding, specific welding process is identical as conventional tab welding process, and the present invention omits the detailed description to this.In addition, For the connection for leaning on rotary welding clamp 5 and clamping device 3 more surely, can be additionally attached using a fixed structure, For example, the fixed structure can be to be realized by knob and the aperture being provided in rotary welding clamp 5 and clamping device 3, tool Body, start a through-hole in a side of rotary welding clamp 5, offers a shrinkage pool in the bottom of clamping device 3, it can in shrinkage pool It is formed with screw thread compatible with the thread spindle of knob, the thread spindle of knob is penetrated from the through-hole of rotary welding clamp 5 to stretch Into in the shrinkage pool of clamping device 3, the fixation that knob realizes the two is then tightened.
In addition, in one embodiment of this invention, the ipsilateral of battery module is arranged in positive and negative electrode electric connecting sheet, exist respectively The two sides of battery cell group, however, it is not limited to this, and positive and negative electrode electric connecting sheet can be carried out according to the different demands of output position Arrangement.
Further, as shown in Figure 7 and Figure 8, the electric connecting sheet bending clamp 7 may include institute in bottom plate 701 and arrangement The support frame 702 on bottom plate is stated, support frame 702 may include the side plate and connection of two device supporting roles connecting with bottom plate 701 The top plate of two side plates is provided with the electric connecting sheet bending mechanism on top plate, wherein the electric connecting sheet bending mechanism packet Include the first electric connecting sheet bending mechanism and the second electric connecting sheet bending mechanism.As shown in fig. 7, the first electric connecting sheet bending mechanism packet It includes bending push jack 703, first drive upside down structure 705, front and back driving structure 704, described first drives upside down structure 705 and institute State the connection of front and back driving structure 704, for realizing moving up and down for the bending push jack 703, the front and back driving structure 704 with The bending push jack 704 connects, for realizing the back-and-forth motion of the bending push jack.As shown in figure 8, second electric connecting sheet Bending mechanism drives upside down structure 706, connecting plate 707, two or so driving structures 708, limit plate 709 and two including second Bending piece 710, described two left and right driving structures 708 are connect with described two bending pieces 710 respectively, for realizing described two Bending piece moves left and right, and the limit plate 709 and described two left and right driving structures 708 are connect with the connecting plate 707, institute It states second and drives upside down structure 706 and connect with the connecting plate 707, moved up and down for realizing the connecting plate is whole, i.e., Connecting plate and the limit plate, driving structure and the bending piece that connect with connecting plate is driven integrally to move up and down.Wherein, the bending Make the anode electrical connection under the driving that push jack 703 drives upside down structure 705 and the front and back driving structure 704 described first 45 ° of piece and the inside bending of cathode electric connecting sheet, the limit plate 709 and the bending piece 710 drive upside down knot described second Continue the positive electric connecting sheet and cathode electric connecting sheet to infolding It is curved to 90 °." moving up and down ", " back-and-forth motion " and " moving left and right " in the present invention be relative to drawing direction shown in Fig. 7 and Speech, specifically, for the length direction of battery cell.First in the present invention drives upside down structure, front and back is driven Dynamic structure, second drive upside down structure and left and right driving structure can all be cylinder.Bending push jack and bending piece can be by bakelite materials Material is made, bending push jack be formed as include interconnecting piece and the push jack extended downwardly from interconnecting piece both ends structure, interconnecting piece with Corresponding cylinder connection, the distance between push jack are arranged to be in contact with positive electric connecting sheet and cathode electric connecting sheet, often A bending piece be formed as include interconnecting piece and from interconnecting piece extend push jack structure.
Further, second guide frame includes the prominent guiding axis being formed on the bottom plate of the clamping device 3 Be formed in the electric connecting sheet bending clamp bottom plate on pilot hole, second position limiting structure include limit knob 308 With the through-hole on the bottom plate of the bottom plate and the electric connecting sheet bending clamp that are respectively formed at the clamping device, by that will limit The thread spindle of knob 308 is placed in the through-hole of the bottom plate 701 of bottom plate 301 and electric connecting sheet bending clamp and tightens described screw Portion and realize being fixedly connected for the clamping device and the electric connecting sheet bending clamp.Pilot hole on bottom plate 701 can be formed Shape identical with the pilot hole formed on the bottom plate 401 of tab bending clamp 4.
Specifically, after completing to the laser welding of the two sides of battery cell group, clamping device is put into electric connecting sheet folding In the accommodating space of angle coupling tool 7, clamping is realized by sliding of the guiding axis of clamping device in the pilot hole on bottom plate 701 Assembly positioning of the fixture in electric connecting sheet bending clamp, when guiding axis slides into the closed end of pilot hole, instruction is assembled to Position.Then limit knob is tightened to realize the fixation of clamping device and electric connecting sheet bending clamp.Later, pass through the first electricity of control Connection sheet bending mechanism and the second electric connecting sheet bending mechanism complete the bending operation to electric connecting sheet in two steps.Firstly, behaviour The vertical control of control button box 8 first drives upside down the driving of structure 705 and drives front and back driving structure 704 and bending push jack 703 whole It moves down, after dropping to certain position, control front and back driving structure 704 is moved forward, so that before the decline simultaneously of bending push jack 703 It moves, to contact with positive and negative anodes electric connecting sheet, electric connecting sheet is released into certain distance, so that electric connecting sheet rotates 45 °.Then, it controls System second drives upside down structure driving to drive left and right driving structure, limit plate and bending piece entire lowering, drops to a positioning When setting, limit plate is located at that electric connecting sheet bending is motionless to bit positions, realizes the position-limiting action of bending in place, later control left and right Driving structure drives to drive the bending piece of two sides inwardly to fast move in left-right direction, in place by connection sheet bending.So far, complete It is positioned at the bending of electric connecting sheet.
To sum up, the welder of power battery monomer provided by the invention is by by soft-package battery monomer clamped one time It realizes the functions such as tab bending, compression, welding, electric connecting sheet bending, positioning, shaping and the fitting of battery cell, ensure that weldering Increased quality welding efficiency is connect, while cost and process consistency can be taken into account.
Another embodiment of the present invention provides a kind of welding technique of power battery monomer, and this method uses aforementioned reality The welder of the power battery monomer of example offer is applied to realize.By the principle and aforementioned device phase of the solved problem of this method Seemingly, therefore the implementation of this method may refer to the implementation of aforementioned device, and overlaps will not be repeated.
As shown in figure 9, the welding technique of power battery monomer provided in an embodiment of the present invention the following steps are included:
S100: battery cell assembling
Multiple battery cell groups are carried out assembling positioning and clamped to form a battery module, each battery cell group is by two A battery cell combines to be formed according to scheduled arrangement.
Specifically, the assembling of two battery cells is realized first with ceiling plate portion, and multiple ceiling plate portion are then placed on dress Set and Positioning is carried out in folder fixture.
S200: tab bending and compression
The two sides tab of battery cell group after clamping is subjected to bending process, and after all tabs are bent over, it is right All tabs carry out compression processing.
Specifically, the clamping device that clamping has battery cell group is fixedly mounted in tab bending clamp and carries out bending part Reason realizes the compression processing of tab using tab pressing plate after tab is bent over.
S300: bilateral laser welding
Carry out laser welding to treated battery cell group two sides are compressed, including to battery module two sides tab and The laser welding of positive and negative electrode electric connecting sheet, wherein after completing to the laser welding of the side of battery cell group, pass through rotation The battery cell group to carry out laser welding to the other side of battery cell group.
Specifically, clamping device is fixedly mounted on rotary welding clamp, carries out side first with laser-beam welding machine Laser welding, including monomer tab with to need to go here and there (simultaneously) the monomer tab of connection, monomer tab and battery module positive and negative electrode therewith electric Clamping device is rotated 108 ° by adjusting adjustable fixed knob after the laser welding for completing side by connection sheet etc., with Carry out the laser welding of the other side.
S400: electric connecting sheet bending positioning
Positive electric connecting sheet and cathode electric connecting sheet each bending respectively inwards to the battery module after laser welding 90°。
Specifically, clamping device is fixedly mounted on the corresponding position of electric connecting sheet bending clamp, then passes through control First electric connecting sheet bending mechanism and the second electric connecting sheet bending mechanism complete the bending of electric connecting sheet in two steps.The first step, The first electric connecting sheet bending mechanism is controlled to 45 ° of electric connecting sheet bending, second controls the second electric connecting sheet bending mechanism and limit Plate realizes the bending of electric connecting sheet in place.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (8)

1.一种动力电池单体的焊接装置，用于实现极耳分布在两侧的软包电池单体的焊接，其特征在于，包括：1. A welding device for power battery cells, for realizing the welding of soft-pack battery cells with tabs distributed on both sides, characterized in that, comprising: 盖板部，用于将两个电池单体夹持形成一个电池单体组，包括相互配合的上盖板和下盖板，所述上盖板和所述下盖板通过卡接结构以将两个电池单体夹持形成一个电池单体组；The cover plate part is used for clamping two battery cells to form a battery cell group, including an upper cover plate and a lower cover plate that cooperate with each other. Two battery cells are clamped to form a battery cell group; 装夹夹具，用于将多个夹持有电池单体组的盖板部进行组装定位并夹紧以形成一个电池模块，所述装夹夹具上形成有对所述盖板部进行限位的限位槽，并在两侧设置有分离相邻的两个电池单体的极耳的隔离结构；A clamping jig is used for assembling, positioning and clamping a plurality of cover parts holding the battery cell group to form a battery module, and the clamping jig is formed with a limiter for the cover parts. A limit slot, and an isolation structure separating the tabs of two adjacent battery cells is provided on both sides; 极耳折弯夹具，用于将装夹在所述装夹夹具中的电池单体组两侧的极耳进行折弯处理，所述极耳折弯夹具形成有放置所述装夹夹具的第一容置空间，所述装夹夹具通过第一导向结构和第一限位结构而滑动并固定于所述第一容置空间，所述极耳折弯夹具通过布置在两侧的折弯机构来实现对电池单体组两侧的极耳的折弯处理；A tab bending jig is used for bending the tabs on both sides of the battery cell group clamped in the clamping jig, and the tab bending jig is formed with a third place for placing the clamping jig. an accommodating space, the clamping jig is slid and fixed in the first accommodating space through the first guide structure and the first limiting structure, and the tab bending jig is passed through the bending mechanisms arranged on both sides To achieve the bending processing of the tabs on both sides of the battery cell group; 极耳压板，用于与所述装夹夹具相配合以对经折弯处理后的极耳进行压紧处理，所述极耳压板通过第一锁扣结构而与所述隔离结构紧密接触从而压紧夹持在极耳压板和隔离结构之间的极耳；The tab pressing plate is used to cooperate with the clamping jig to press the bent tab, and the tab pressing plate is in close contact with the isolation structure through the first locking structure to press The tab tightly clamped between the tab pressure plate and the isolation structure; 旋转焊接夹具，用于对装夹在装夹夹具中的电池单体组的两侧进行激光焊接，与所述装夹夹具通过可调节固定机构固定连接，在完成对电池单体组的一侧的激光焊接后，通过调节所述可调节固定机构来旋转所述装夹夹具以对电池单体组的另一侧进行激光焊接；The rotary welding fixture is used for laser welding the two sides of the battery cell group clamped in the clamping fixture, and is fixedly connected with the clamping fixture through an adjustable fixing mechanism. After the laser welding of the battery cell group, the clamping fixture is rotated by adjusting the adjustable fixing mechanism to perform laser welding on the other side of the battery cell group; 电连接片折弯夹具，用于将装夹在所述装夹夹具中的电池模块的正极电连接片和负极电连接片分别向内折弯90°，所述电连接片折弯夹具形成有放置所述装夹夹具的第二容置空间，所述装夹夹具通过第二导向结构和第二限位结构而滑动并固定于所述第二容置空间，所述电连接片折弯夹具通过电连接片折弯机构来实现对正极电连接片和负极电连接片的折弯处理。The electric connecting piece bending jig is used to bend the positive electric connecting piece and the negative electric connecting piece of the battery module clamped in the clamping jig inward by 90° respectively, and the electric connecting piece bending jig is formed with The second accommodating space for placing the clamping fixture, the clamping fixture is slid and fixed in the second accommodating space through the second guiding structure and the second limiting structure, and the electric connecting piece is bent and the fixture is The bending process of the positive electrical connecting piece and the negative electrical connecting piece is realized by the electrical connecting piece bending mechanism. 2.根据权利要求1所述的动力电池单体的焊接装置，其特征在于，所述上盖板和所述下盖板的侧部突出形成有支撑所述电池单体的支撑部，所述卡接结构包括形成在所述上盖板或所述下盖板的支撑部上的多个凸起和形成在所述下盖板或者上盖板上的与所述凸起相配合的多个卡孔；2 . The welding device for power battery cells according to claim 1 , wherein the side parts of the upper cover plate and the lower cover plate are protruded and formed with support parts for supporting the battery cells, and the The snap-fit structure includes a plurality of protrusions formed on the support portion of the upper cover or the lower cover and a plurality of protrusions formed on the lower cover or the upper cover to match the protrusions card hole; 所述上盖板和所述下盖板上还形成有加强筋和凹凸结构，所述凹凸结构用于实现多个盖板部之间的卡接。Reinforcing ribs and concave-convex structures are also formed on the upper cover plate and the lower cover plate, and the concave-convex structures are used to realize the snap connection between the plurality of cover plate parts. 3.根据权利要求1所述的动力电池单体的焊接装置，其特征在于，所述装夹夹具包括装夹夹具底板、设置在装夹夹具底板上的左挡板、右挡板、前挡板、后挡板、和顶板，所述顶板与所述后挡板通过转轴结构连接并与所述前挡板通过第二锁扣结构连接，所述后挡板与所述装夹夹具底板通过转轴结构连接，所述左挡板和所述右挡板上分别设置有所述隔离结构，并分别形成有放置所述极耳压板的安置槽，所述隔离结构包括以预定距离隔开的多个挡条，并且相邻两个挡条之间的宽度与两个电池单体之间的距离相对应。3 . The welding device for power battery cells according to claim 1 , wherein the clamping fixture comprises a clamping fixture base plate, a left baffle, a right baffle and a front baffle arranged on the clamping clamp base plate. 4 . A plate, a rear baffle, and a top plate, the top plate is connected with the rear baffle through a rotating shaft structure and is connected with the front baffle through a second locking structure, and the rear baffle and the bottom plate of the clamping fixture pass through The rotating shaft is structurally connected, the left baffle and the right baffle are respectively provided with the isolation structure, and are respectively formed with placement grooves for placing the tab pressing plate, the isolation structure includes a plurality of spaced apart by a predetermined distance. There are two baffle bars, and the width between two adjacent baffle bars corresponds to the distance between the two battery cells. 4.根据权利要求3所述的动力电池单体的焊接装置，其特征在于，所述极耳折弯夹具包括极耳折弯夹具底板、设置在所述极耳折弯夹具底板两侧的折弯机构，其中，所述折弯机构包括连接板、第一驱动结构、第二驱动结构、第三驱动结构、第一折弯推爪和第二折弯推爪，所述第一驱动结构和所述第二驱动结构布置在所述连接板上，分别与所述第一折弯推爪和所述第二折弯推爪连接，并驱动所述第一折弯推爪和所述第二折弯推爪在纵向方向上移动，所述第三驱动结构与所述连接板连接，并驱动连接板整体在与所述纵向方向垂直的水平方向上移动。4 . The welding device for power battery cells according to claim 3 , wherein the tab bending jig comprises a base plate of the tab bending jig, and folding jigs arranged on both sides of the base plate of the tab bending jig. 5 . A bending mechanism, wherein the bending mechanism includes a connecting plate, a first driving structure, a second driving structure, a third driving structure, a first bending push claw and a second bending push claw, the first driving structure and The second driving structure is arranged on the connecting plate, is connected with the first bending push claw and the second bending push claw respectively, and drives the first bending push claw and the second bending push claw The bending push claw moves in the longitudinal direction, the third driving structure is connected with the connecting plate, and drives the entire connecting plate to move in a horizontal direction perpendicular to the longitudinal direction. 5.根据权利要求4所述的动力电池单体的焊接装置，其特征在于，所述第一导向结构包括突出形成在所述装夹夹具底板上的导向轴和形成在所述极耳折弯夹具底板上的导向孔，所述第一限位结构包括限位旋钮和分别形成在所述装夹夹具底板和所述极耳折弯夹具底板上的通孔，所述限位旋钮包括旋拧部和突出形成在所述旋拧部上的螺纹轴，通过将所述螺纹轴放置在所述通孔中并拧紧所述旋拧部而实现所述装夹夹具和所述极耳折弯夹具的固定连接。5 . The welding device for power battery cells according to claim 4 , wherein the first guide structure comprises a guide shaft formed protruding from the bottom plate of the clamping fixture and a bend formed on the tab. 6 . A guide hole on the bottom plate of the fixture, the first limit structure includes a limit knob and a through hole formed on the bottom plate of the clamping fixture and the bottom plate of the tab bending fixture, the limit knob includes a screw and a threaded shaft protruding from the screwing part, the clamping jig and the tab bending jig are realized by placing the threaded shaft in the through hole and tightening the screwing part fixed connection. 6.根据权利要求3所述的动力电池单体的焊接装置，其特征在于，所述旋转焊接夹具包括支撑台和固定连接在所述支撑台上的固定板，所述固定板上形成有对所述装夹夹具进行限位的限位块，所述可调节固定结构包括调节旋钮、形成在所述装夹夹具底板上的导向轴、形成在所述固定板上以插入所述导向轴的通孔，所述导向轴上形成有螺纹孔，所述调节旋钮包括旋拧部和突出形成在所述旋拧部上的螺纹轴，通过将所述螺纹轴插入所述螺纹孔中并拧紧所述旋拧部而实现所述装夹夹具和所述旋转焊接夹具的固定连接。6 . The welding device for power battery cells according to claim 3 , wherein the rotating welding fixture comprises a support table and a fixed plate fixedly connected to the support table, and the fixed plate is formed with a pair of pairs. 7 . The limiting block for the clamping fixture to limit the position, and the adjustable fixing structure includes an adjustment knob, a guide shaft formed on the bottom plate of the clamping fixture, and a guide shaft formed on the fixing plate for inserting the guide shaft. a through hole, a threaded hole is formed on the guide shaft, the adjustment knob includes a screwing part and a threaded shaft protruding from the screwing part, by inserting the threaded shaft into the threaded hole and tightening the The screw part is used to realize the fixed connection of the clamping fixture and the spin welding fixture. 7.根据权利要求3所述的动力电池单体的焊接装置，其特征在于，所述电连接片折弯夹具包括电连接片折弯夹具底板和布置在所述电连接片折弯夹具底板上的支撑架，所述支撑架上设置有第一电连接片折弯机构和第二电连接片折弯机构；7 . The welding device for power battery cells according to claim 3 , wherein the electric connecting piece bending jig comprises a bottom plate of the electric connecting piece bending jig and a bottom plate arranged on the bottom plate of the electric connecting piece bending jig. 8 . The support frame is provided with a first electrical connecting piece bending mechanism and a second electrical connecting piece bending mechanism; 所述第一电连接片折弯机构包括折弯推片、第一上下驱动结构、前后驱动结构，所述第一上下驱动结构与所述前后驱动结构连接，用于实现所述折弯推片的上下移动，所述前后驱动结构与所述折弯推片连接，用于实现所述折弯推片的前后移动；The first electrical connection piece bending mechanism includes a bending push piece, a first upper and lower driving structure, and a front and rear driving structure. The first upper and lower driving structure is connected with the front and rear driving structures for realizing the bending and pushing piece. The up and down movement of the front and rear drive structures is connected with the bending push piece for realizing the forward and backward movement of the bending push piece; 所述第二电连接片折弯机构包括第二上下驱动结构、连接板、两个左右驱动结构、限位板和两个折弯片，所述两个左右驱动结构分别与所述两个折弯片连接，用于实现所述两个折弯片的左右移动，所述限位板和所述两个左右驱动结构与所述连接板连接，所述第二上下驱动结构与所述连接板连接，用于实现所述连接板整体的上下移动；The second electric connecting piece bending mechanism includes a second upper and lower driving structure, a connecting plate, two left and right driving structures, a limit plate and two bending pieces, and the two left and right driving structures are respectively connected with the two bending pieces. Bending piece connection is used to realize the left and right movement of the two bending pieces, the limiting plate and the two left and right driving structures are connected with the connecting plate, and the second upper and lower driving structures are connected with the connecting plate connecting, for realizing the up and down movement of the connecting plate as a whole; 其中，所述折弯推片在所述第一上下驱动结构和所述前后驱动结构的驱动下使所述正极电连接片和负极电连接片向内折弯45°，所述限位板和所述折弯片在所述第二上下驱动结构和所述左右驱动结构的驱动下使所述正极电连接片和负极电连接片继续向内折弯至90°。Wherein, the bending push piece is driven by the first upper and lower driving structures and the front and rear driving structures to bend the positive electrical connection piece and the negative electrical connection piece inward by 45°, and the limit plate and the Under the driving of the second up-down driving structure and the left-right driving structure, the bending piece continues to bend the positive electrode electrical connection piece and the negative electrode electrical connection piece inward to 90°. 8.根据权利要求7所述的动力电池单体的焊接装置，其特征在于，所述第二导向结构包括突出形成在所述装夹夹具底板上的导向轴和形成在所述电连接片折弯夹具底板上的导向孔，所述第二限位结构包括限位旋钮和分别形成在所述装夹夹具底板和所述电连接片折弯夹具底板上的通孔，所述限位旋钮包括旋拧部和突出形成在所述旋拧部上的螺纹轴，通过将所述螺纹轴放置在所述通孔中并拧紧所述旋拧部而实现所述装夹夹具和所述电连接片折弯夹具的固定连接。8 . The welding device for power battery cells according to claim 7 , wherein the second guide structure comprises a guide shaft protruding from the bottom plate of the clamping fixture and a fold formed on the electrical connecting piece. 9 . A guide hole on the bottom plate of the bending fixture, the second limit structure includes a limit knob and a through hole formed on the bottom plate of the clamping fixture and the bottom plate of the electrical connecting piece bending fixture, the limit knob includes A screw portion and a threaded shaft protruding from the screw portion, the clamping fixture and the electrical connection piece are realized by placing the screw shaft in the through hole and tightening the screw portion Fixed connection of bending fixtures.
CN201710350945.XA 2017-05-17 2017-05-17 A kind of welding technique and device of power battery monomer Active CN107009026B (en)

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CN109830737B (en) * 2019-02-23 2021-06-01 镇江成泰自动化科技有限公司 Automatic assembly production method of multi-tab power battery
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