CN108127273A - Cover board, welding system and welding method - Google Patents
Cover board, welding system and welding method Download PDFInfo
- Publication number
- CN108127273A CN108127273A CN201711406449.8A CN201711406449A CN108127273A CN 108127273 A CN108127273 A CN 108127273A CN 201711406449 A CN201711406449 A CN 201711406449A CN 108127273 A CN108127273 A CN 108127273A
- Authority
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- China
- Prior art keywords
- cover board
- magnet
- pressure head
- single battery
- connecting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005484 gravity Effects 0.000 claims abstract description 11
- 239000000178 monomer Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 4
- 229920001342 Bakelite® Polymers 0.000 description 2
- 239000004637 bakelite Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- 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
- B23K26/70—Auxiliary operations or equipment
-
- 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
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The embodiment of the present invention provides a kind of cover board, welding system and welding method.The cover board includes cover board body and pressure head.The pressure head is movably arranged on the cover board body, can be moved along the direction vertical with the cover board body.The one end of the pressure head far from the cover board body is provided with magnet, and the magnet is for single battery and electrode slice to be attached together, to carry out laser welding.The cover board is placed in the battery modules for needing to weld, the pressure head moves under the effect of gravity, and the electrode slice in battery modules and single battery are attached together by the magnet on the pressure head, and then carries out laser welding.Weld defect is avoided as a result, is ensured the consistency of Product jointing quality, is not needed to replace different types of welded cover plate halfway, improve production efficiency, and reduce manufacture cost.
Description
Technical field
The present invention relates to battery technology field, in particular to a kind of cover board, welding system and welding method.
Background technology
Current battery module is the kernel component of new-energy automobile, and the technology involved in battery modules welding process is very
Extensively, for example, electric resistance welding, ultrasonic bond, Laser Welding etc..The selection of welding method directly affects the production cost of battery, uses
Safety and the reliability of quality.The welding method of single battery becomes a primary study problem in new energy battery modules.
Wherein, laser welding is with wlding loss is small, welded piece deformation is small, equipment performance stablizes easy to operate, welding matter
The features such as amount height and high degree of automation, technologic advantage is that other welding manners are incomparable, thus laser welding
Scheme has become battery modules welding mainstream scheme.However in current laser welding scheme, there are in weld defect, needs
Replace the deficiencies of cover board in way.
Invention content
In order to overcome above-mentioned deficiency of the prior art, the embodiment of the present invention is designed to provide a kind of cover board, welding
Cover board, can be when being placed in the battery modules for needing to weld by system and welding method, and pressure head moves under the effect of gravity,
So as to which the electrode slice in battery modules and single battery are attached together, and then carry out laser welding.Welding is avoided to lack as a result,
It falls into, ensures the consistency of Product jointing quality, do not need to replace different types of welded cover plate halfway, improve production efficiency,
And reduce manufacture cost.
The embodiment of the present invention provides a kind of cover board, and the cover board includes cover board body and pressure head,
The pressure head is movably arranged on the cover board body, can be moved along the direction vertical with the cover board body；
The one end of the pressure head far from the cover board body is provided with magnet, and the magnet is used for single battery and electrode
Piece is attached together, to carry out laser welding.
In embodiments of the present invention, the cover board further includes axle sleeve,
Axle sleeve mounting hole is provided on the cover board body, the axle sleeve is arranged in the axle sleeve mounting hole and the lid
Plate ontology is fixedly connected；
The pressure head is movably arranged in the axle sleeve, and the pressure head can be relative to axle sleeve edge and the cover board body
Vertical direction movement.
In embodiments of the present invention, the pressure head is taper, and the pressure head includes first connecting portion, second connecting portion,
The first connecting portion is contacted with the sleeve lining；
The second connecting portion is set to the one end of the pressure head far from the cover board body, and the magnet is arranged on second
The free end of connecting portion.
In embodiments of the present invention, the first connecting portion and the hollow shape of magnet are cylinder,
The internal diameter of the first connecting portion is more than the internal diameter of the magnet, and the outer diameter of the first connecting portion is less than the axis
Cover the aperture of mounting hole；
The internal diameter of described second connecting portion one end is identical with the internal diameter of the first connecting portion, and the second connecting portion is another
That holds is identical with the internal diameter of the magnet；
It is connected between the first connecting portion, second connecting portion and magnet.
In embodiments of the present invention, the diameter matches of the outer diameter of the magnet and the single battery.
In embodiments of the present invention, the cover board body is made of insulating materials.
The embodiment of the present invention also provides a kind of welding system, and the system comprises battery modules and described in any one of the above embodiments
Cover board,
The battery modules include electrode slice and single battery, and the electrode slice is arranged on the single battery surface；
The single battery includes metal shell；
The cover board is contacted with the battery modules, and the pressure head is under the effect of gravity along vertical with the cover board body
Direction moves, and the electrode slice and single battery are attached together by the magnet on the pressure head, to carry out laser welding.
In embodiments of the present invention, axle sleeve mounting hole is arranged on position corresponding with the single battery in the battery modules
Place, the quantity of the axle sleeve mounting hole and the quantity Matching of the single battery of the battery modules.
In embodiments of the present invention, the battery modules further include fixed plate and collector plate,
The electrode slice is arranged between the single battery and the fixed plate；
Multiple first through hole for being used to fix the single battery are provided in the fixed plate；
The outer diameter of the magnet is less than the aperture of the first through hole；
The collector plate is arranged between the fixed plate and the electrode slice；
Multiple second through-holes are provided in the collector plate, the outer diameter of the magnet is less than the aperture of second through-hole.
The embodiment of the present invention also provides a kind of welding method, applied to welding system described in any one of the above embodiments, the side
Method includes：
The cover board is placed in the battery modules so that the magnet on the pressure head under the effect of gravity towards described in
Single battery moves, and the single battery and the electrode slice are attached together；
The single battery and the electrode slice are welded together using instrument is welded.
In terms of existing technologies, the invention has the advantages that：
The embodiment of the present invention provides a kind of cover board, welding system and welding method.The cover board includes cover board body and pressure
Head.The pressure head is movably arranged on the cover board body, can be moved along the direction vertical with the cover board body.The pressure head
One end far from the cover board body is provided with magnet, and the magnet is used to single battery and electrode slice being attached together, with
Carry out laser welding.The cover board is placed in the battery modules for needing to weld, the pressure head moves under the effect of gravity, described
Electrode slice in battery modules and single battery are attached together by the magnet on pressure head, and then carry out laser welding.It keeps away as a result,
No-welding defect ensures the consistency of Product jointing quality, does not need to replace different types of welded cover plate halfway, improve life
Efficiency is produced, and reduces manufacture cost.
For the above-mentioned purpose of invention, feature and advantage is enable to be clearer and more comprehensible, present pre-ferred embodiments cited below particularly, and
Attached drawing appended by cooperation, is described in detail below.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram of cover board provided in an embodiment of the present invention.
Fig. 2 is the enlarged diagram in I portions in Fig. 1.
Fig. 3 is the structure diagram of pressure head provided in an embodiment of the present invention.
Fig. 4 is the schematic diagram of welding system provided in an embodiment of the present invention.
Fig. 5 is the schematic diagram of battery modules provided in an embodiment of the present invention.
Fig. 6 is the structure diagram of electrode slice provided in an embodiment of the present invention.
Fig. 7 is the flow diagram of welding method provided in an embodiment of the present invention.
Icon：10- welding systems；100- cover boards；110- cover board bodies；112- axle sleeve mounting holes；120- pressure heads；121-
One connecting portion；122- second connecting portions；125- magnet；130- axle sleeves；200- battery modules；201- single batteries；220- electrodes
Piece；221- welding positions；230- fixed plates；240- collector plates.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be configured to arrange and design with a variety of different herein.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment of the present invention, people in the art
Member's all other embodiments obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " are based on orientation shown in the drawings or position relationship or are somebody's turn to do
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
It solves to indicate or implying relative importance.
In addition, the terms such as term " level ", " vertical ", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to represent the structure if " level " only refers to that its direction is more horizontal with respect to for " vertical "
It has to fully horizontally, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or one
Connect to body；Can be mechanical connection or electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Below in conjunction with the accompanying drawings, it elaborates to some embodiments of the present invention.In the absence of conflict, it is following
Feature in embodiment and embodiment can be combined with each other.
Please refer to Fig. 1 and Fig. 2, Fig. 1 be cover board 100 provided in an embodiment of the present invention structure diagram, Fig. 2 is I in Fig. 1
The enlarged diagram in portion.The cover board 100 can include cover board body 110 and pressure head 120.The pressure head 120 is movably arranged on
On the cover board body 110, it can be moved along the direction vertical with the cover board body 110.The pressure head 120 is far from the cover board
One end of ontology 110 is provided with magnet 125, and the magnet 125 is used to single battery 201 and electrode slice 220 being attached together,
To carry out laser welding.By the suction-operated of the magnet 125, can be filled to avoid due to single battery 201 and electrode slice 220
Weld defect caused by not reached requirement with gap precision ensure that the consistency of Product jointing quality.Meanwhile in welding process
In do not need to replace different types of welded cover plate 100 due to 200 shape of battery modules difference, 240 difference of collector plate etc.,
This improves production efficiencys, reduce manufacture cost.
Wherein, the cover board body 110 is made of insulating materials.Since bakelite has higher mechanical strength, good
Insulating properties, it is heat-resisting, corrosion-resistant, therefore in an embodiment of the present embodiment, the cover board body 110 uses bakelite system
Into.
In the present embodiment, the cover board 100 can also include axle sleeve 130.Axle sleeve is provided on the cover board body 110
Mounting hole 112.The axle sleeve 130 is cyclic structure, and the outer diameter of the axle sleeve 130 is less than the aperture of the axle sleeve mounting hole 112.
The axle sleeve 130 is arranged in the axle sleeve mounting hole 112, is fixedly connected with the cover board body 110.The pressure head 120 is set
It puts in the axle sleeve 130, the pressure head 120 can be relative to the axle sleeve 130 along the side vertical with the cover board body 110
To movement.
Fig. 3 is please referred to, Fig. 3 is the structure diagram of pressure head 120 provided in an embodiment of the present invention.The pressure head 120 is cone
Shape.The pressure head 120 can include first connecting portion 121 and second connecting portion 122.The first connecting portion 121 and the axis
The inner wall contact of set 130, the second connecting portion 122 are arranged on the one end of the pressure head 120 far from the cover board body 110.
Wherein, the magnet 125 is arranged on the free end of the second connecting portion 122, that is to say, that the magnet 125 is arranged on institute
State the taper face of pressure head 120.
In the embodiment of the present embodiment, the pressure head 120 can be solid construction, hollow structure etc., the magnet
125 can be solid construction, cyclic structure etc..The structure of the pressure head 120 and the magnet 125 can according to actual demand into
Row setting.
In an embodiment of the present embodiment, the pressure head 120 is thin-walled pressure head, can save and make pressure head 120
Material, while can still ensure adsorption effect.The first connecting portion 121 and the magnet 125 are hollow structure, hollow shape
Shape is cylinder.
The internal diameter of the first connecting portion 121 is more than the internal diameter of the magnet 125.Wherein, the first connecting portion 121
Outer diameter is less than the aperture of the axle sleeve mounting hole 112, so that the pressure head 120 is movably arranged on the cover board body 110.
The internal diameter of one end that the second connecting portion 122 is connected with the first connecting portion 121 and the internal diameter of the first connecting portion 121
Identical, the second connecting portion 122 and the internal diameter of one end that the magnet 125 connects are identical with the internal diameter of the magnet 125.Institute
It states and is connected between first connecting portion 121, second connecting portion 122 and magnet 125.
Wherein, the diameter matches of the outer diameter of the magnet 125 and single battery 201.By setting the outer of the magnet 125
The diameter matches of diameter and single battery 201 so that single battery 201 and electrode slice 220 are attached together by the magnet 125
Effect is more preferable, so as to better ensure that laser welding effect.
Please refer to Fig. 4 and Fig. 5, Fig. 4 be welding system 10 provided in an embodiment of the present invention schematic diagram, Fig. 5 is the present invention
The schematic diagram for the battery modules 200 that embodiment provides.The welding system 10 includes battery modules 200 and the cover board 100.Institute
Stating battery modules 200 may include electrode slice 220 and single battery 201, and the electrode slice 220 can be arranged on the single battery
201 negative terminal surface.The single battery 201 includes metal shell.The cover board 100 is contacted with the battery modules 200,
In, pressure head 120 on the cover board 100 is towards the battery modules 200.
After the cover board 100 is placed in the battery modules 200, the pressure head 120 is under the effect of gravity described in
Single battery 201 moves.Since the electrode slice 220 is arranged on 201 surface of single battery, on the pressure head 120
Magnet 125 surface to be welded of the electrode slice 220 and the single battery 201 is attached together automatically, recycle welding
Instrument welds together the electrode slice 220 with single battery 201, so as to ensure that welding product quality obtains double protection.
After the completion of welding, the cover board 100 is removed, to carry out Laser Welding to other battery modules 200 using the cover board 100
It connects.
In the present embodiment, the axle sleeve mounting hole 112 is provided in the single battery 201 in the battery modules 200
At corresponding position.Pass through above-mentioned setting so that the pressure head 120 can with the surface to be welded of single battery described in face 201, from
And the electrode slice 220 and the single battery 201 are attached together by the magnet 125.
In the present embodiment, the quantity of the axle sleeve mounting hole 112 and the single battery 201 of the battery modules 200
Quantity Matching.In Fig. 4, the monomer that the quantity of the 100 Upper shaft sleeve mounting hole 112 of cover board includes with two battery modules 200
The quantity of battery 201 is identical.In practical applications, the axle sleeve mounting hole 112 of the cover board 100 can be set according to actual conditions
Quantity.
Referring once again to Fig. 5, the battery modules 200 can also include fixed plate 230.The electrode slice 220 is arranged on
Between the single battery 201 and the fixed plate 230.It is provided in the fixed plate 230 multiple for fixing the monomer
The first through hole of battery 201.Optionally, the fixed plate 230 is two, by the first through hole, can make the monomer electricity
Pond 201 is fixed between two fixed plates 230.Wherein, the outer diameter of the magnet 125 is less than the aperture of the first through hole, with
Make the magnet 125 that can adsorb the single battery 201 and electrode slice 220 to pass through the fixed plate 230.
Optionally, for example the single battery 201 is cylindrical battery, and the first through hole can be stepped hole.It is preferred that
Ground is slightly larger than the diameter of the single battery 201 close to the aperture of the stepped hole of the side of the single battery 201, far from institute
The aperture for stating the stepped hole of 201 side of single battery is slightly less than the diameter of the single battery 201.It is possible thereby to so that fixed effect
Fruit is more preferable.
Fig. 6 is please referred to, Fig. 6 is the structure diagram of electrode slice 220 provided in an embodiment of the present invention.The electrode slice 220
It is upper to include welding position 221.The magnet 125 adsorbs the surface to be welded of the welding position 221 and the single battery 201
Together.Wherein, the welding position 221 is arranged on and the 201 corresponding position of single battery in the battery modules 200
Place, to ensure welding effect.
Referring once again to Fig. 5, the battery modules 200 can also include collector plate 240.The collector plate 240 is arranged on
Between the fixed plate 230 and the electrode slice 220.Multiple second through-holes are provided in the collector plate 240.The magnet
125 outer diameter is less than the aperture of second through-hole, so as to the magnet 125 can be adsorbed to pass through the collector plate 240 it is described
Single battery 201 and electrode slice 220.
Since the through-hole in the cover board 100, collector plate 240 etc. is corresponding with the single battery 201 in battery modules 200
Therefore setting, in welding, does not need to replace since module shape, 201 positive and negative anodes of single battery, collector plate 240 etc. are different
Different types of welded cover plate 100, cover board 100 it is versatile.Pass through above-mentioned setting so that welding operating process simplicity efficiency
Height, while the quality of laser-welded product is substantially increased, avoiding traditional handicraft can not effectively control laser welding rate bad
Situation.
Fig. 7 is please referred to, Fig. 7 is the flow diagram of welding method provided in an embodiment of the present invention.The method is applied to
The welding system 10.The method may include step S110 and step S120.
The cover board 100 is placed in the battery modules 200 by step S110, so that the magnet on the pressure head 120
125 move under the effect of gravity towards the single battery 201, and the single battery 201 and the electrode slice 220 are adsorbed
Together.
Step S120 is welded together the single battery 201 and the electrode slice 220 using instrument is welded.
In the present embodiment, the cover board 100 is placed in the battery pack face that the battery modules 200 need to weld.It is described
The pressure head 120 on cover board 100 moves under the effect of gravity along the axle sleeve 130.The magnet being embedded on the pressure head 120
125 can be automatically by the electrode slice 220 and the monomer when sensing to the metal shell of the surface to be welded of the single battery 201
Battery 201 is attached together.Welding instrument (for example, laser-beam welding machine) is recycled by the electrode slice 220 and single battery 201
Weld together.Entire welding process is simple and clear, easy to operate, proposes the quality for having done laser-welded product and welding significantly
Efficiency.
In conclusion the embodiment of the present invention provides a kind of cover board, welding system and welding method.The cover board includes cover board
Ontology and pressure head.The pressure head is movably arranged on the cover board body, can be moved along the direction vertical with the cover board body.
The one end of the pressure head far from the cover board body is provided with magnet, and the magnet is used to adsorb single battery and electrode slice
Together, to carry out laser welding.The cover board is placed in the battery modules for needing to weld, the pressure head moves under the effect of gravity
It is dynamic, so as to which the electrode slice in battery modules and single battery are attached together, and then carry out laser welding.It avoids welding as a result,
Defect is connect, ensures the consistency of Product jointing quality, does not need to replace different types of welded cover plate halfway, improves production effect
Rate, and reduce manufacture cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of cover board, which is characterized in that the cover board includes cover board body and pressure head,
The pressure head is movably arranged on the cover board body, can be moved along the direction vertical with the cover board body；
The one end of the pressure head far from the cover board body is provided with magnet, and the magnet is used to inhale single battery and electrode slice
It is attached to together, to carry out laser welding.
2. cover board according to claim 1, which is characterized in that the cover board further includes axle sleeve,
Axle sleeve mounting hole is provided on the cover board body, the axle sleeve is arranged in the axle sleeve mounting hole and the cover board sheet
Body is fixedly connected；
The pressure head is movably arranged in the axle sleeve, and the pressure head can be vertical with the cover board body relative to axle sleeve edge
Direction movement.
3. cover board according to claim 2, which is characterized in that the pressure head is taper, and the pressure head includes the first connection
Portion, second connecting portion,
The first connecting portion is contacted with the sleeve lining；
The second connecting portion is set to the one end of the pressure head far from the cover board body, and the magnet is arranged on the second connection
The free end in portion.
4. cover board according to claim 3, which is characterized in that the first connecting portion and the hollow shape of magnet are cylinder
Shape,
The internal diameter of the first connecting portion is more than the internal diameter of the magnet, and the outer diameter of the first connecting portion is consolidated less than the axle sleeve
Determine the aperture in hole；
The internal diameter of described second connecting portion one end is identical with the internal diameter of the first connecting portion, the second connecting portion other end
It is identical with the internal diameter of the magnet；
It is connected between the first connecting portion, second connecting portion and magnet.
5. cover board according to claim 4, which is characterized in that the diameter of the outer diameter of the magnet and the single battery
Match.
6. cover board according to claim 1, which is characterized in that the cover board body is made of insulating materials.
7. a kind of welding system, which is characterized in that the system comprises described in any one of battery modules and claim 1-6
Cover board,
The battery modules include electrode slice and single battery, and the electrode slice is arranged on the single battery surface；
The single battery includes metal shell；
The cover board is contacted with the battery modules, and the pressure head is under the effect of gravity along the direction vertical with the cover board body
It moves, the electrode slice and single battery are attached together by the magnet on the pressure head, to carry out laser welding.
8. system according to claim 7, which is characterized in that axle sleeve mounting hole is arranged on and the list in the battery modules
At the corresponding position of body battery, the quantity of the axle sleeve mounting hole and the quantity Matching of the single battery of the battery modules.
9. system according to claim 7, which is characterized in that the battery modules further include fixed plate and collector plate,
The electrode slice is arranged between the single battery and the fixed plate；
Multiple first through hole for being used to fix the single battery are provided in the fixed plate；
The outer diameter of the magnet is less than the aperture of the first through hole；
The collector plate is arranged between the fixed plate and the electrode slice；
Multiple second through-holes are provided in the collector plate, the outer diameter of the magnet is less than the aperture of second through-hole.
10. a kind of welding method, which is characterized in that applied to the welding system described in any one of claim 7-9, the side
Method includes：
The cover board is placed in the battery modules, so that the magnet on the pressure head is under the effect of gravity towards the monomer
Battery moves, and the single battery and the electrode slice are attached together；
The single battery and the electrode slice are welded together using instrument is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406449.8A CN108127273B (en) | 2017-12-22 | 2017-12-22 | Cover plate, welding system and welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406449.8A CN108127273B (en) | 2017-12-22 | 2017-12-22 | Cover plate, welding system and welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108127273A true CN108127273A (en) | 2018-06-08 |
| CN108127273B CN108127273B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711406449.8A Active CN108127273B (en) | 2017-12-22 | 2017-12-22 | Cover plate, welding system and welding method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067801A (en) * | 2018-01-31 | 2018-05-25 | 华霆（合肥）动力技术有限公司 | Welding tooling and welding system |
| CN114505583A (en) * | 2022-02-25 | 2022-05-17 | 柳州宏德激光科技有限公司 | Welding device for positive pole of cylindrical battery |
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| CN108067801A (en) * | 2018-01-31 | 2018-05-25 | 华霆（合肥）动力技术有限公司 | Welding tooling and welding system |
| CN114505583A (en) * | 2022-02-25 | 2022-05-17 | 柳州宏德激光科技有限公司 | Welding device for positive pole of cylindrical battery |
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