CN114544336A - Method for representing welding tension of multi-layer laminated soft-packaged battery cell lug - Google Patents
Method for representing welding tension of multi-layer laminated soft-packaged battery cell lug Download PDFInfo
- Publication number
- CN114544336A CN114544336A CN202111315386.1A CN202111315386A CN114544336A CN 114544336 A CN114544336 A CN 114544336A CN 202111315386 A CN202111315386 A CN 202111315386A CN 114544336 A CN114544336 A CN 114544336A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- connecting rod
- clamp
- clamping plate
- piece group
- 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
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for representing the welding tension of a tab of a multi-layer laminated soft-package battery cell, aiming at solving the defect that the tension between multi-layer pole pieces cannot be measured in the prior art, and solving the technical problems by adopting the following technical scheme: s01, preparing a tab; s02, separating the pole piece of the tab from the welding layer to be measured, so that the pole piece is divided into an upper pole piece group and a lower pole piece group; s03, mounting the upper pole piece group on an upper clamp of a tension testing device, and mounting the lower pole piece group on a lower clamp of the tension testing device; s04, starting the testing device, separating the upper pole piece group from the lower pole piece group at a certain speed, and recording the magnitude of the tension between the upper pole piece group and the lower pole piece group; s05, comparing the recorded tension data with standard data to determine whether the standard is met; by the testing method, the welding tension between the multiple layers of pole pieces can be measured.
Description
Technical Field
The invention relates to the technical field of pole piece welding, in particular to a method for representing the welding tension of a soft-package battery cell tab of a multi-layer lamination.
Background
The tab welding is to weld multiple layers of pole pieces in the battery to form a tab area, the welding between the pole pieces and the tabs is a very critical process in the battery manufacturing process, and uneven welding spots or insufficient welding can affect the welding tension, the welding quality, even the internal resistance of the battery cell and increase the energy loss of the battery cell. In order to express the welding quality between the pole pieces or between the pole pieces and the tabs, the welding tension is usually adopted to directly represent the welding tension between the pole pieces or between the pole pieces and the tabs. Referring to fig. 1 and 2, in the conventional operation, the outermost pole piece and the pole lug welded to the outermost pole piece are respectively pulled by a tensile machine directly, so as to measure the welding tension between the outermost pole piece and the adjacent pole lug, and in the process of the operation of the method, because the tension between the outermost pole piece and the adjacent inner pole piece is not directly measured, and because the welded pole lug is deformed and the welded part between the pole pieces is not deformed during the measurement, the deformation of the welded pole lug which is mistakenly taken as the deformation of the welded pole lug is the deformation of the welded part of the pole piece, so that the accuracy of the measurement result is reduced; with the development of the technology, the pole pieces of the battery cell are more and more, and the pole lugs are also thicker and thicker, so that the welding tension between the adjacent pole pieces needs to be measured, and the measurement cannot be completed by adopting the conventional method, so that a new measurement method is urgently needed to represent the welding tension between the pole pieces.
The invention discloses a method for testing the welding tension of a square full-lug battery cell, which is disclosed by the application under the name of Chinese patent publication No. CN109540662B, publication No. 2018, 10 and 16, and comprises the following steps: 1) preparing a battery cell testing body, wherein the battery cell testing body comprises a lug and a flexible connection welded on the lug; the tab comprises more than two layers of current collectors which are arranged in a stacked mode, and the flexible connection is welded on the outermost surface of the tab; 2) the parts at two sides of the flexible connection on the battery cell testing body are respectively stretched towards opposite directions, and the tensile force when the flexible connection is tested to be disconnected with the lug or the tensile force when the lug is disconnected with the lug is the welding tensile force. The invention prepares the battery cell test body by cutting the actual battery cell or uses the same process and material to prepare the battery cell test body which has the same layer number and the consistent welding form of the lug with the actual battery cell pole piece; the prepared electric core testing body is equivalent to an actual electric core, so that the welding tension testing result of the electric core testing body can truly reflect the welding effect of the actual electric core; however, the invention is difficult to accurately test when meeting the electrode lugs welded by a plurality of layers of pole pieces, the method is complex to operate, and the actually used battery core electrode lugs are adopted in the existing actual test.
Disclosure of Invention
The invention overcomes the defect that the prior art can not measure the tension between the multilayer pole pieces, provides the method for representing the welding tension of the soft-package battery cell pole ear of the multilayer lamination, can test the welding tension between the multilayer pole pieces as required, and has simple test steps and accurate test result.
In order to solve the technical problems, the invention adopts the following technical scheme: a method for characterizing the welding tension of a multi-layer laminated soft-package cell tab comprises the following steps:
s01, preparing the tab to be tested;
s02, separating the pole pieces of the tabs from the welding layers to be measured, so that the pole pieces are divided into an upper pole piece group and a lower pole piece group;
s03, mounting the upper pole piece group on an upper clamp of a tension testing device, and mounting the lower pole piece group on a lower clamp of the tension testing device;
s04, starting the testing device, separating the upper pole piece group from the lower pole piece group at a certain speed, and recording the magnitude of the tension between the upper pole piece group and the lower pole piece group;
and S05, comparing the recorded tension data with standard data to determine whether the standard is met.
By the testing method, the welding tension between the multiple layers of pole pieces can be measured, not only the welding tension between the outermost layer of pole pieces and the inner layer of pole pieces, so that the welding tension between different pole pieces can be tested as required, and the data detection and collection capability is improved; the welding tension between the pole pieces can be directly tested by adopting the method, so that the problem that the measurement of the welding tension between the outermost pole piece and the inner pole piece is inaccurate in the conventional test method is solved; and the method for testing the welding tension between the pole pieces is simple, and the inspection efficiency in batch production can be greatly improved.
Preferably, the lower fixture comprises a lower base, and the lower base is provided with an upward upper opening; and lower clamping assemblies consisting of a left clamping plate and a right clamping plate are arranged on two sides of the upper opening.
The lower clamping assembly can clamp the lower pole piece group, so that the lower pole piece group can be clamped more conveniently.
Preferably, the right clamping plate is fixedly arranged on one side of the upper opening, the left clamping plate is movably arranged on the other side of the upper opening, and the left clamping plate is connected with a transmission device, so that the left clamping plate can be matched with the right clamping plate to clamp the lug.
The transmission device can drive the left clamping plate to move, so that the left clamping plate and the right clamping plate can be matched, and the pole pieces can be clamped conveniently.
Preferably, a left frame rod is arranged at the bottom of the left clamping plate, a right through hole is formed in the bottom end of the right clamping plate, and the left frame rod is matched with the right through hole when the lower clamping assembly clamps the tab; the bottom of the right clamping plate is provided with a right frame rod, the bottom end of the left clamping plate is provided with a left through hole, and when the lower clamping assembly clamps the lug, the right frame rod is matched with the through hole.
Through the cooperation between right hack lever and the left hack lever, form the support frame that can support the pole piece, can be so that when testing the antipodal ear, can place pole piece group down on the support frame that left hack lever and right hack lever are constituteed for operate convenience more. Meanwhile, the pole piece is generally rectangular, and the lower pole piece group is placed on the support frame, so that the welding part between the pole piece and the pole piece can be kept horizontal, the upper clamp, the lower clamp and the welding part between the pole piece and the pole piece are kept horizontal, and the testing accuracy is improved.
The upper clamp comprises an upper base, the upper base is provided with a lower opening facing the lower side, lower clamping assemblies are arranged on two sides of the lower opening and comprise a fixed clamping plate and a movable clamping plate, the fixed clamping plate is fixedly arranged on one side of the lower opening, the movable clamping plate is arranged on the other side of the lower opening, and the fixed clamping plate is connected with a transmission device.
The upper clamp can be clamped to be more convenient to clamp the upper pole piece group through the mutual matching between the fixed clamp plate and the movable clamp plate.
The upper clamp is provided with a storage assembly for placing the tabs, the storage assembly comprises a storage plate, a connecting column is arranged on the storage plate, the connecting column is connected with a sliding block at the back of the movable clamping plate, and the movable clamping plate extends downwards to form a clamping plate matched with the storage plate.
The utility model discloses a clamp is got to utmost point piece, and the clamp is got the board and is got the portion of pressing from both sides and get the portion of clamp that the board formed in order to can be convenient to utmost point piece clamp, will wait to detect utmost point ear place put the thing board with press from both sides and get the board and form press from both sides and get the portion of getting, when the utmost point ear test, can place utmost point ear and get the clamp that the board formed and get the space with putting the thing board with pressing from both sides, the motion through movable clamp plate drives the motion of utmost point ear, realizes the last utmost point piece group of utmost point ear and the centre gripping of lower utmost point piece group for test utmost point ear safety more.
The connecting column comprises a fixed column and a sliding column which are fixedly arranged on a sliding block, the fixed column is connected with the sliding block, the sliding column is sleeved on the outer side of the fixed column, and a spring is arranged between the sliding column and the fixed column; the both sides of slip post are followed the direction of slider is provided with the spout, the slip post with spout looks butt, the spout is along the orientation movable splint direction has set gradually that the height is unequal puts the thing section, presss from both sides tight section and unclamps the section.
The fixed column is set to be a sliding column which is in butt joint with the sliding groove, the spring is arranged between the sliding column and the fixed column, the sliding column can be always in butt joint with the sliding groove through the spring, and the object placing section, the clamping section and the loosening section which are different in height are arranged in the sliding groove, so that when the connecting column drives the sliding column to move, the sliding column is in butt joint with the object placing section, the clamping section and the loosening section which are different in height, when the sliding column is in butt joint with the object placing section, a certain space is formed between the object placing plate and the clamping plate, and at the moment, the lug can be placed between the object placing plate and the clamping plate; when the sliding column is abutted against the clamping section, the object placing plate and the clamping plate are closed to clamp the pole lug, when the sliding column is abutted against the loosening section, the object placing plate and the clamping plate are loosened, and the movable clamping plate is matched with the fixed clamping plate to clamp the upper pole piece group, so that the object placing plate and the clamping plate cannot influence the detection of the pole lug; through the steps, the matching of the object placing plate and the clamping and taking plate can be realized to realize the clamping and loosening steps when the movable clamping plate moves.
Preferably, a guide assembly corresponding to the article placing assembly is arranged between the upper clamp and the lower clamp; the guide assembly comprises a guide block and a connecting rod; the guide block is provided with a protruding part facing the object placing plate, and two ends of the protruding part are provided with guide surfaces.
When the method for testing the pole lug is adopted, the pole piece needs to be divided into an upper pole piece group and a lower pole piece group, in order to enable the separation to be more convenient, a guide assembly is arranged, the pole piece is placed on the object placing plate and moves along with the object placing plate, the pole piece is separated when moving to the protruding part on the guide assembly, and the pole piece can be divided into the upper pole piece group and the lower pole piece group which move upwards and downwards under the guide action of the guide surface; the efficiency of test has greatly been improved, and can prevent to cause the danger of fish tail with the hands when breaking off the pole piece with the fingers and thumb.
Preferably, the connecting rod includes an upper connecting rod, a lower connecting rod and a rotating shaft, the upper connecting rod and the lower connecting rod can rotate around the rotating shaft, the guide block is divided into a first guide block and a second guide block, the upper connecting rod is connected with the second guide block, and the lower connecting rod is connected with the first guide block.
Through setting up connecting rod and lower connecting rod, can be so that when anchor clamps, anchor clamps divide from top to bottom, can drive connecting rod and lower connecting rod respectively and carry out the motion from top to bottom, at this in-process, go up connecting rod and lower connecting rod and move round the pivot for first guide block and second guide block can move towards the direction of keeping away from utmost point ear, can reach the effect of shrink guide block with this, prevent that the guide block is right produce the influence during utmost point ear test.
Preferably, the upper connecting rod is slidably connected with the upper clamp, and the lower connecting rod is fixedly connected with the lower clamp.
When the test of the upper clamp and the lower clamp is finished and the second test is to be carried out, the first guide block and the second guide block are restored to the initial positions by the upper connecting rod and the lower connecting rod under the driving action of the upper clamp and the lower clamp, the upper connecting rod and the lower connecting rod at the moment are also returned to the initial positions, the upper connecting rod and the lower connecting rod are prevented from being damaged due to overstock caused by the fact that the upper clamp and the lower clamp are retracted too small in position, and therefore the upper connecting rod and the upper clamp are movably connected, the upper connecting rod can slide with the upper clamp when the distance between the upper clamp and the lower clamp is too small, and the upper connecting rod and the lower connecting rod are prevented from being damaged due to the fact that the distance between the upper clamp and the lower clamp is too small.
Compared with the prior art, the invention has the beneficial effects that: (1) the welding tension between different pole pieces can be accurately tested, so that the welding tension between the pole pieces can be more accurately evaluated; (2) the test is convenient, can be very big make things convenient for the test between the pole piece for the efficiency of test is better, and the effect is better.
Drawings
FIG. 1 is a background art explanatory diagram;
FIG. 2 is a background art explanatory diagram;
FIG. 3 is a schematic of the process of the present invention;
FIG. 4 is a clamp diagram of the tensile testing apparatus of the present invention;
FIG. 5 is a top view of the lower clamp of the present invention;
FIG. 6 is a block diagram of the present invention;
FIG. 7 is a cross-sectional view of the connecting column of the present invention;
FIG. 8 is a sectional view taken in the direction A of FIG. 7;
FIG. 9 is an enlarged view of a portion of FIG. 6;
FIG. 10 is a top view of the guide assembly;
in the figure: 1. a tab 11, an upper pole piece group 12 and a lower pole piece group;
2. the clamping device comprises an upper clamp 21, an upper base 22, a lower opening 23, a fixed clamping plate 24, a movable clamping plate 241, a sliding block 242 and a clamping plate;
3. the lower clamp, 31, the lower base, 32, the upper opening, 33, the left clamping plate, 331, the left frame rod, 332, the left through hole, 333, the sliding block, 34, the right clamping plate, 341, the right frame rod, 342, the right through hole, 35, the rotating device, 351, the connecting rod, 352, the pushing block, 353 and the rotating shaft;
4. the article placing assembly comprises an article placing plate 41, an article placing plate 42, a connecting column 421, a fixing column 422, a sliding column 423, a spring 424, a sliding chute 425, an article placing section 426, a clamping section 427 and a releasing section;
5. guide assembly, 51, guide block, 511, protrusion, 512, guide surface, 513, first guide block, 514, second guide block, 52, connecting rod, 521, upper connecting rod, 522, lower connecting rod, 523, pivot.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1: referring to fig. 3-5, a method of characterizing the weld tension of a multi-laminate, soft-packed cell tab includes the steps of:
s01, preparing the tab 1 to be tested;
s02, separating the pole pieces of the tabs from the welding layers to be measured, so that the pole pieces are divided into an upper pole piece group 11 and a lower pole piece group 12;
s03, mounting the upper pole piece group 11 on an upper clamp 2 of the tensile testing device, and mounting the lower pole piece group 12 on a lower clamp 3 of the tensile testing device;
s04, starting a testing device, separating the upper pole piece group 11 from the lower pole piece group 12 at a certain speed, recording the magnitude of the tensile force between the upper pole piece group 11 and the lower pole piece group 12, and controlling the upward movement speed of the upper clamp 2 to be 90-120 mm/min;
s05, comparing the recorded tension data with standard data to determine whether the standard is met;
by the testing method, the welding tension between the multiple layers of pole pieces can be measured, and not only the welding tension between the outermost layer of pole pieces and the inner layer of pole pieces can be measured, so that the welding tension between different pole pieces can be tested as required, and the data detection and collection capability is improved; the welding tension between the pole pieces can be directly tested by adopting the method, so that the problem that the measurement of the welding tension between the outermost pole piece and the inner pole piece is inaccurate in the conventional test method is solved; and the method for testing the welding tension between the pole pieces is simple, and the inspection efficiency in batch production can be greatly improved.
The lower clamp 3 comprises a lower base 31, and the lower base 31 is provided with an upward upper opening 32; the two sides of the upper opening are provided with a lower clamping component consisting of a left clamping plate 33 and a right clamping plate 34. The right splint 34 is fixed to be set up in one side of last opening 32, and the mobilizable setting of left splint 33 is at the opposite side of last opening 32, and left splint 33 is connected with transmission 35 for can cooperate with right splint 34 and carry out the centre gripping to utmost point ear 1. The transmission device 35 can be driven by an air cylinder to directly drive the left clamping plate 33 to move, or can be driven by a hand to move the left clamping plate 33. In this embodiment, transmission 35 rotates the connecting rod 351 of being connected including setting up at the sliding block 333 with left splint 33 rear side mutually, and the lower extreme of even 351 pole is connected with one and promotes piece 352, wears to be equipped with a pivot 353 on the connecting rod 351, and the promotion is fast 352 to be connected with the cylinder, can promote the motion that promotes piece 352 through the promotion of cylinder, and the motion through connecting rod 351 drives the sliding block 333 of left splint 33 rear side and moves, and then drives left splint 33 and moves.
The bottom of the left clamping plate 33 is provided with a left frame rod 331, the bottom end of the right clamping plate 34 is provided with a right through hole 342, and when the lower clamping assembly clamps the tab 1, the left frame rod 331 is matched with the right through hole 342; the bottom of the right clamping plate 34 is provided with a right frame rod 341, the bottom end of the left clamping plate 33 is provided with a left through hole 341, and when the lower clamping assembly clamps the tab 1, the right frame rod 341 is matched with the through hole 341.
Through the cooperation between right hack lever 331 and the left hack lever 341, form the support frame that can support the pole piece, can be so that when testing utmost point ear 1, can place pole piece group 12 down on the support frame that left hack lever 331 and right hack lever 341 are constituteed for it is more convenient to operate. Meanwhile, the pole piece is generally rectangular, and the lower pole piece group is placed on the support frame, so that the welding part between the pole piece and the pole piece can be kept horizontal, the upper clamp 2, the lower clamp 3 and the welding part between the pole piece and the pole piece are kept horizontal, and the testing accuracy is improved.
Go up anchor clamps 2 and include upper base 21, upper base 21 is provided with one down opening 22 towards the downside, and the both sides of lower opening 22 are provided with down the centre gripping subassembly, and down the centre gripping subassembly includes solid fixed splint 23 and activity splint 24, and the solid fixed splint 23 is fixed to be set up in one side of lower opening 22, and activity splint 24 sets up the opposite side at lower opening 22, and gu fixed splint 23 is connected with transmission.
The upper clamp can be clamped to be more convenient to clamp the upper pole piece group through the mutual matching between the fixed clamp plate and the movable clamp plate.
Example 2: referring to fig. 6 to 10, the structure of the present embodiment is substantially the same as that of embodiment 1, and the difference is that the upper fixture 2 is provided with a placement component 4 for placing the tab 1, the placement component 4 includes a placement plate 41, the placement plate 41 is provided with a connecting column 42, the connecting column 42 is connected to a sliding block 241 on the back of the movable clamping plate 24, and the movable clamping plate 24 extends downward to form a clamping plate 242 matched with the placement plate 41.
Get the setting and put thing subassembly 4 for can be convenient to the utmost point piece is pressed from both sides, will wait to detect utmost point ear 1 and place and put thing board 41 and press from both sides the clamp portion of getting board 242 formation, when testing utmost point ear 1, can place utmost point ear 1 and put thing board 41 and press from both sides the clamp that gets board 242 formation and get between the space, the motion through activity splint 24 drives utmost point ear 1's motion, the realization is to utmost point ear 1's last pole piece group 11 and the centre gripping of lower pole piece group 12, make test utmost point ear 1 safety more.
The connecting column 42 comprises a fixed column 421 and a sliding column 422 which are fixedly arranged on the sliding block 241, the fixed column 421 and the sliding block 241 are connected, the sliding column 422 is sleeved outside the fixed column 422, the upper end of the sliding column 422 is provided with a sliding hole, the sliding column 422 is arranged in the sliding hole, and a spring 423 is arranged between the sliding column 422 and the fixed column 421; the sliding grooves 424 are arranged on two sides of the sliding column 422 along the direction of the sliding block 241, the sliding column 422 is abutted against the upper ends of the sliding grooves 424, the sliding grooves 424 are sequentially provided with an object placing section 425, a clamping section 426 and a loosening section 427 which are different in height along the direction towards the movable clamping plate 24, and the horizontal heights of the object placing section 425 and the loosening section 427 are lower than that of the clamping section 426.
The fixed column 421 is set to be the sliding column 422, the sliding column 422 abuts against the sliding groove 424, the spring 423 is arranged between the sliding column 422 and the fixed column 421, the sliding column 422 can always abut against the sliding groove 424 due to the spring 423, and the placing section 425, the clamping section 426 and the releasing section 427 with different heights are arranged in the sliding groove 424, so that when the connecting column 42 drives the sliding column 422 to move, the sliding column 422 abuts against the placing section 425, the clamping section 426 and the releasing section 427 with different heights, when the sliding column 422 abuts against the placing section 425, a certain space is formed between the placing plate 41 and the clamping plate 242, and at the moment, the tab 1 can be placed between the placing plate 41 and the clamping plate 242; when the sliding column 422 abuts against the clamping section 426, the object placing plate 41 and the clamping plate 242 are closed at this time to clamp the tab 1, when the sliding column 422 abuts against the loosening section 427, the object placing plate 41 and the clamping plate 242 are loosened at this time, and the movable clamping plate 24 is already matched with the fixed clamping plate 23 at this time to clamp the upper pole piece group 11, so that the object placing plate 41 and the clamping plate 242 do not affect the detection of the tab 1; the clamping and loosening steps of the cooperation between the object placing plate 41 and the clamping plate 242 can be realized when the movable clamping plate 24 moves through the steps.
A guide component 2 corresponding to the article placing component 4 is arranged between the upper clamp 2 and the lower clamp 3; the guide assembly 5 comprises a guide block 51 and a connecting rod 52; the guide block 51 is provided with a protrusion 511 facing the storage plate 41, and guide surfaces 512 are provided at both ends of the protrusion 511.
When the method for testing the tab is adopted, the pole piece needs to be divided into the upper pole piece group 11 and the lower pole piece group 12, in order to enable the separation to be more convenient, the guide assembly 5 is arranged, the pole piece is placed on the object placing plate 41 and moves along with the object placing plate 41, when the pole piece moves to the protruding part 511 on the guide assembly 5, the pole piece is separated, and the pole piece can be divided into the upper pole piece group 11 and the lower pole piece group 12 which move upwards and downwards under the guide effect of the guide surface 512; the efficiency of test has greatly been improved, and can prevent to cause the danger of fish tail with the hands when breaking off the pole piece with the fingers and thumb.
The connecting rod 52 comprises an upper connecting rod 521, a lower connecting rod 522 and a rotating shaft 523, the two upper connecting rods 521 are respectively arranged at two ends of the guide block 521 in the length direction, a butt-joint rod is connected between the two upper connecting rods 521 and the butt-joint rod, the upper connecting rod 521 and the lower connecting rod 522 can rotate around the rotating shaft 523, the guide block 51 is divided into a first guide block 513 and a second guide block 514, the upper connecting rod 521 is connected with the second guide block 514, and the lower connecting rod 522 is connected with the first guide block 513.
Through setting up connecting rod 521 and lower connecting rod 522, can be so that go up anchor clamps 2, when lower anchor clamps 3 are divided from top to bottom, can drive connecting rod 521 and lower connecting rod 522 respectively and carry out the motion from top to bottom, at this in-process, go up connecting rod 521 and lower connecting rod 522 and move round pivot 523, make first guide block 513 and second guide block 514 can move towards the direction of keeping away from utmost point ear 1, with this effect that can reach shrink guide block 51, prevent that guide block 51 from producing the influence when testing utmost point ear 1.
The upper connecting rod 521 is connected with the upper clamp 2 in a sliding manner, and the lower connecting rod 522 is fixedly connected with the lower clamp 3; the upper end of the upper connecting rod 521 is hinged with an upper connecting column, the upper end of the upper connecting column is arranged in a hole on the upper clamp 2, and the upper end of the upper connecting column and the top end of the hole are provided with a butting spring 524; the lower end of the lower connecting rod is hinged with a lower connecting column, and the lower connecting column is fixedly connected with the lower clamp 3.
When the upper clamp 2 and the lower clamp 3 are ready for a second test after the test is completed, the upper connecting rod 521 and the lower connecting rod 522 are driven by the upper clamp 2 and the lower clamp 3 to restore the first guide block 513 and the second guide block 514 to the initial positions, and the upper connecting rod 521 and the lower connecting rod 522 are also returned to the initial positions at this time, so as to prevent the upper connecting rod 521 and the lower connecting rod 522 from being damaged due to the fact that the upper connecting rod 521 and the lower connecting rod 522 are overstocked due to the fact that the retracted positions of the upper clamp 2 and the lower clamp 3 are too small, the upper connecting rod 521 is movably connected with the upper clamp 2, so that when the distance between the upper clamp 2 and the lower clamp 3 is too small, the upper connecting rod 521 can slide with the upper clamp 2, and therefore the upper connecting rod 521 and the lower connecting rod 522 are prevented from being damaged due to the fact that the distance between the upper clamp 2 and the lower clamp 3 is too small.
The invention sets the upper pole piece group 11 and the lower pole piece group 12 between the pole pieces, which is convenient to test the welding tension between the adjacent pole pieces, when the tension testing device is used, firstly, the pole ear 1 is placed in the clamping space formed by the object placing plate 41 and the clamping plate 242, because the clamping space is smaller, the pole ear 1 can be clamped in the clamping space, when the transmission device 35 pushes the movable clamping plate 24 to move, the sliding block 241 behind the movable clamping plate 24 drives the connecting column 42 to move, so that the sliding column 421 is butted and slides along the sliding groove 424, when the sliding column 421 is butted with the clamping section 426, the object placing plate 41 and the clamping plate 242 are clamped, so that the pole ear 1 is clamped, when the movable clamping plate 24 drives the pole ear 1 to move continuously, the pole ear 1 is butted with the protruding part of the guide block 51, the pole pieces are divided into the upper pole piece group 11 and the lower pole piece group 12 through the effect of the protruding part and the guide block 51, when pole piece group 1 centre gripping is gone up in the cooperation of movable clamp plate 24 and solid fixed clamp plate 23, slip post 421 this moment with the release section 427 looks butt in the spout 424, put thing board 41 and press from both sides the board 242 and loosen utmost point ear 1 this moment, later with pole piece group 12 centre gripping through lower anchor clamps 3 down, later begin to test, when last anchor clamps 2 and 3 alternate segregation down, last anchor clamps 2 and lower anchor clamps 3 at this moment can keep away from each other, drive connecting rod 521 and lower connecting rod 522 simultaneously and move, make guide block 51 move towards the direction of keeping away from utmost point ear 1. And after the experiment is finished, recording data obtained by the experiment, and comparing the obtained data with standard data to obtain an experiment conclusion.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (10)
1. A method for representing the welding tension of a soft-package battery cell lug of a multi-layer lamination is characterized by comprising the following steps:
s01, preparing the tab (1) to be tested;
s02, separating the pole pieces of the tabs from the welding layers to be measured, so that the pole pieces are divided into an upper pole piece group (11) and a lower pole piece group (12);
s03, mounting the upper pole piece group (11) on an upper clamp (2) of the tensile testing device, and mounting the lower pole piece group (12) on a lower clamp (3) of the tensile testing device;
s04, starting a testing device, separating an upper pole piece group (11) from a lower pole piece group (12) at a certain speed, and recording the magnitude of the tension between the upper pole piece group (11) and the lower pole piece group (12);
and S05, comparing the recorded tension data with standard data to determine whether the standard is met.
2. The method for characterizing the weld tension of soft-pack cell tabs of multi-layer laminates according to claim 1, characterized in that the lower clamp (3) comprises a lower base (31), the lower base (31) being provided with an upward facing upper opening (32); and lower clamping components consisting of a left clamping plate (33) and a right clamping plate (34) are arranged on two sides of the upper opening.
3. The method for characterizing the welding tension of a soft-package cell tab of a multilayer laminate according to claim 2, characterized in that the right clamping plate (34) is fixedly arranged on one side of the upper opening (32), the left clamping plate (33) is movably arranged on the other side of the upper opening (32), and the left clamping plate (33) is connected with a transmission device (35) so that the tab (1) can be clamped by matching with the right clamping plate (34).
4. The method of characterizing the weld pull force of a multi-laminate flexible package cell tab of claim 3, wherein:
a left frame rod (331) is arranged at the bottom of the left clamping plate (33), a right through hole (342) is arranged at the bottom end of the right clamping plate (34), and when the lower clamping assembly clamps the tab (1), the left frame rod (331) is matched with the right through hole (342);
the bottom of the right clamping plate (34) is provided with a right frame rod (341), the bottom end of the left clamping plate (33) is provided with a left through hole (332), and when the lower clamping assembly clamps the tab (1), the right frame rod (341) is matched with the left through hole (332).
5. The method of characterizing the weld pull force of a multi-laminate, soft-pack cell tab of claim 1, wherein: go up anchor clamps (2) and include base (21), it is provided with lower opening (22) of downside to go up base (21), the both sides of opening (22) are provided with down the centre gripping subassembly down, the centre gripping subassembly includes solid fixed splint (23) and movable clamp plate (24) down, gu fixed splint (23) fixed setting is in one side of lower opening (22), movable clamp plate (24) set up the opposite side of opening (22) down, gu fixed splint (23) are connected with transmission.
6. The method of characterizing the weld pull force of a multi-laminate, soft-pack cell tab of claim 5, wherein: go up being provided with on anchor clamps (2) and placing thing subassembly (4) of utmost point ear (1), put thing subassembly (4) including putting thing board (41), it is provided with a spliced pole (42) on thing board (41) to put, spliced pole (42) with slider (241) at the activity splint (24) back are connected, activity splint (24) downwardly extending and putting thing board (41) matched with clamp and get board (242).
7. The method of characterizing the weld pull force of a multi-laminate, soft-pack cell tab of claim 6, wherein: the connecting column (42) comprises a fixed column (421) and a sliding column (422) which are fixedly arranged on a sliding block (241), the fixed column (421) is connected with the sliding block (241), the sliding column (422) is sleeved on the outer side of the fixed column (422), and a spring (423) is arranged between the sliding column (422) and the fixed column (421); the two sides of the sliding column (422) are provided with sliding grooves (424) along the direction of the sliding block (241), the sliding column (422) is provided with a sliding groove (424) which is abutted to the sliding groove (424), and the sliding groove (424) is sequentially provided with an object placing section (425), a clamping section (426) and a releasing section (427) which are different in height along the direction towards the movable clamping plate (24).
8. The method for characterizing the weld tension of a flexible package cell tab of a multi-layer laminate according to claim 5 or 6 or 7, characterized in that: a guide assembly (2) corresponding to the article placing assembly (4) is arranged between the upper clamp (2) and the lower clamp (3); the guide assembly (5) comprises a guide block (51) and a connecting rod (52); the guide block (51) is provided with a protruding part (511) facing the object placing plate (41), and two ends of the protruding part (511) are provided with guide surfaces (512).
9. The method of characterizing the weld pull force of a multi-laminate, soft-pack cell tab of claim 8, wherein: the connecting rod (52) comprises an upper connecting rod (521), a lower connecting rod (522) and a rotating shaft (523), the upper connecting rod (521) and the lower connecting rod (522) can rotate around the rotating shaft (523), the guide block (51) is divided into a first guide block (513) and a second guide block (514), the upper connecting rod (521) is connected with the second guide block (514), and the lower connecting rod (522) is connected with the first guide block (513).
10. The method of characterizing the weld pull force of a multi-laminate, soft-pack cell tab of claim 9, wherein: the upper connecting rod (521) is connected with the upper clamp (2) in a sliding mode, and the lower connecting rod (522) is fixedly connected with the lower clamp (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111315386.1A CN114544336B (en) | 2021-11-08 | 2021-11-08 | Method for representing welding tension of soft-package battery cell lugs of multi-layer lamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111315386.1A CN114544336B (en) | 2021-11-08 | 2021-11-08 | Method for representing welding tension of soft-package battery cell lugs of multi-layer lamination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114544336A true CN114544336A (en) | 2022-05-27 |
| CN114544336B CN114544336B (en) | 2023-08-15 |
Family
ID=81668534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111315386.1A Active CN114544336B (en) | 2021-11-08 | 2021-11-08 | Method for representing welding tension of soft-package battery cell lugs of multi-layer lamination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114544336B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050256382A1 (en) * | 2004-05-07 | 2005-11-17 | Lre Medical Gmbh | Strip ejector |
| CN103776762A (en) * | 2014-01-03 | 2014-05-07 | 广东工业大学 | Method for detecting interface binding strength of aluminum-steel composite material for soldering |
| CN105758792A (en) * | 2016-03-01 | 2016-07-13 | 银邦金属复合材料股份有限公司 | Method and device for measuring interface average peel strength of metal laminated composite material |
| CN105784472A (en) * | 2016-05-05 | 2016-07-20 | 河南晶锐新材料股份有限公司 | Welding strength test fixture and test method |
| CN109540662A (en) * | 2018-10-16 | 2019-03-29 | 中航锂电（洛阳）有限公司 | A kind of rectangular full tab battery core welding pull force test method |
| CN211717964U (en) * | 2020-02-19 | 2020-10-20 | 大连铸铂机械有限公司 | Improved tensile machine |
| CN112382831A (en) * | 2020-09-09 | 2021-02-19 | 万向一二三股份公司 | A utmost point ear and utmost point ear welding set for laminate polymer battery |
-
2021
- 2021-11-08 CN CN202111315386.1A patent/CN114544336B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050256382A1 (en) * | 2004-05-07 | 2005-11-17 | Lre Medical Gmbh | Strip ejector |
| CN103776762A (en) * | 2014-01-03 | 2014-05-07 | 广东工业大学 | Method for detecting interface binding strength of aluminum-steel composite material for soldering |
| CN105758792A (en) * | 2016-03-01 | 2016-07-13 | 银邦金属复合材料股份有限公司 | Method and device for measuring interface average peel strength of metal laminated composite material |
| CN105784472A (en) * | 2016-05-05 | 2016-07-20 | 河南晶锐新材料股份有限公司 | Welding strength test fixture and test method |
| CN109540662A (en) * | 2018-10-16 | 2019-03-29 | 中航锂电（洛阳）有限公司 | A kind of rectangular full tab battery core welding pull force test method |
| CN211717964U (en) * | 2020-02-19 | 2020-10-20 | 大连铸铂机械有限公司 | Improved tensile machine |
| CN112382831A (en) * | 2020-09-09 | 2021-02-19 | 万向一二三股份公司 | A utmost point ear and utmost point ear welding set for laminate polymer battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114544336B (en) | 2023-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206216095U (en) | Automatic welding device | |
| CN106450485B (en) | Power lithium battery cell processing apparatus | |
| CN109590756A (en) | A kind of laser welding apparatus for cell polar ear and pole piece | |
| CN109443116A (en) | Electric detonator production line | |
| CN115602905B (en) | Automatic pressing mechanism of square battery module and square battery module assembly line | |
| CN115602860B (en) | Membrane electrode gasket laminating equipment and laminating process thereof | |
| CN218067443U (en) | Wire and cable tension test equipment | |
| CN114544336A (en) | Method for representing welding tension of multi-layer laminated soft-packaged battery cell lug | |
| CN210120205U (en) | Electricity core unloader | |
| CN115235898A (en) | Corrugated paper intensity detection device that intelligence was made | |
| CN208289395U (en) | For manufacturing the welding equipment of battery | |
| CN116765633A (en) | Cutting equipment is used in car as a house production | |
| CN116275510A (en) | Four-station vision positioning laser welding device and method for silicon steel sheets of motor stator | |
| CN107634252B (en) | Utmost point ear steel casing welding mechanism and electric core point end welding equipment thereof | |
| JPH0444206A (en) | Device for assembling lead wire of electrolytic capacitor | |
| CN214086838U (en) | Novel fibre cloth production is with collecting device | |
| CN212419498U (en) | Rivet material loading assembly device | |
| CN206605168U (en) | A kind of lithium battery rotating disc type laser welding apparatus | |
| JP2000205345A (en) | Method and device for assembling cvt belt | |
| CN113109721A (en) | Convenient check out test set of lithium battery group for intelligent manufacturing | |
| JPH08230073A (en) | Method and apparatus for manufacturing filter | |
| CN114535796B (en) | Method for welding tabs on two sides of battery cell | |
| CN218271693U (en) | Leather stretching detection device convenient to clamp | |
| CN216680678U (en) | Ultrasonic welding machine for tabs | |
| CN216917975U (en) | Battery substrate tape splicing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |