CN109550817A - A kind of bipolar group of tab apparatus for bending of lithium battery and bending method - Google Patents

A kind of bipolar group of tab apparatus for bending of lithium battery and bending method Download PDF

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Publication number
CN109550817A
CN109550817A CN201811584686.8A CN201811584686A CN109550817A CN 109550817 A CN109550817 A CN 109550817A CN 201811584686 A CN201811584686 A CN 201811584686A CN 109550817 A CN109550817 A CN 109550817A
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CN
China
Prior art keywords
bending
steel disc
tab
cover board
bending steel
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Granted
Application number
CN201811584686.8A
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Chinese (zh)
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CN109550817B (en
Inventor
刘婷
杨桃
耿春华
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JIANGSU CHUNLAN CLEANING ENERGY RESEARCH INSTITUTE Co Ltd
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JIANGSU CHUNLAN CLEANING ENERGY RESEARCH INSTITUTE Co Ltd
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Priority to CN201811584686.8A priority Critical patent/CN109550817B/en
Publication of CN109550817A publication Critical patent/CN109550817A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/002Positioning devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

The present invention discloses a kind of bipolar group of tab apparatus for bending of lithium ion battery, it limits bending baffle and is slided in orbit by sliding rail to adjust the distance of pole group placement space, limit bending baffle moves limit bending baffle to the length of pole group bottom according to tab bending part, to keep tab bending part corresponding at a distance from tab placement space to the length of pole group bottom.The invention also discloses a kind of bending method of bipolar group of tab apparatus for bending of lithium ion battery, it is adjusted to identical at a distance from tab bending part to pole group bottom;Then the position for finely tuning tab and upper bending steel disc (4) and lower bending steel disc (5) makes upper and lower bending steel disc be in tab bending part;It will be limited in cover board between bending steel disc (12) insertion upper cover and connection sheet, make steel disc and pole clamping;Cell cover is inwardly pushed away along horizontal direction, makes tab and cover board connection sheet at S-shaped.

Description

A kind of bipolar group of tab apparatus for bending of lithium battery and bending method
Technical field
The present invention relates to a kind of bipolar group of tab apparatus for bending of lithium battery and bending methods.
Background technique
In cell production process, need battery core to be put into this process of shell, wherein right before battery core is put into shell The tab that is connected with cell cover carries out bending processing, and technique requires to need after bending tab S-type or Z-type, and as far as possible with top Lid is concordant, but most of at present is all manually to carry out folding tab operation, due to the difference of artificial hand-power, leads to tab bending degree It is inconsistent, influence consistency and accuracy rate.It, can in battery use or transportational process if the position of tab bending is not right Tab can be will cause to be connected with shell and short-circuit, generation security risk;Or in laser welding, because tab bending degree is not It is enough, cause upper cover to contact with battery case bad, in the laser welder course of work, cell cover tilts and then laser is caused to be beaten Tab or pole group is caused to burn out on tab or in the group of pole, so that battery core is scrapped.
Summary of the invention
The present invention provides a kind of bipolar group of tab apparatus for bending of lithium ion battery and bending methods, and battery can be improved in it Safety and the scrappage for reducing battery guarantee the consistency and accuracy rate of tab bending.
The invention adopts the following technical scheme: a kind of bipolar group of tab apparatus for bending of lithium ion battery, it mainly includes Upper fixed cover board and lower fixed pedestal, one end of upper fixed cover board are set as bending end, and one end of lower fixed pedestal is set as rolling over The bending end of bent-up end, the bending end of upper fixed cover board and lower fixed pedestal is rotation connection, and upper fixed cover board is around lower fixed pedestal Rotation, is equipped with gap I between upper fixed cover board and lower fixed pedestal, and the other end of upper fixed cover board is connected with adjustable height Upper bending steel disc, to be detachably connected between upper bending steel disc and upper fixed cover board, the other end of lower fixed pedestal is connected with Height-adjustable lower bending steel disc is detachably connected, in lower fixed pedestal between lower bending steel disc and lower fixed pedestal Upper surface is equipped with limit bending baffle, and limit bending baffle includes parallel-plate part and vertical plate part, parallel-plate part and perpendicular Straight plate part, which sets up separately to set, to be integral, and is equipped with track in the upper surface of lower fixed pedestal, the sliding rail of the bottom of parallel-plate part is installed In orbit, parallel-plate part is to be detachably connected with track by screw III, between vertical plate part and lower bending steel disc Gap II is set as pole group placement space, and limit bending baffle is slided by sliding rail in orbit to adjust pole group placement space Distance, limit bending baffle moves limit bending baffle to the length of pole group bottom according to tab bending part, to make tab The length of bending part to pole group bottom is corresponding at a distance from the group placement space of pole.
The cross section of the upper fixed cover board is lateral L shape, and the cross section of the lower fixed pedestal is lateral L Shape.The bending end of the upper fixed cover board is rotation connection by the bending end of connection shaft and lower fixed pedestal.Described Upper bending steel disc is from top to bottom equipped with several screw holes I, screw hole II also is provided in the other end of upper fixed cover board, in upper fixed cover board In the screw hole II of the other end and the screw hole I of upper bending steel disc respective heights insertion screw I by the other end of upper fixed cover board with it is upper Bending steel disc connects and can realize the adjusting of bending steel disc height, and the lower bending steel disc is from top to bottom equipped with several screw holes III, it also is provided with screw hole IV in the other end of lower fixed pedestal, in the screw hole IV and lower bending steel disc pair of the lower fixed pedestal other end Insertion screw II in the screw hole III of height is answered to connect the other end of lower fixed pedestal with lower bending steel disc and can realize lower bending The adjusting of steel disc height, upper cover fixed plate and lower fixed pedestal are the two parts for separating adjustment height, by adjusting upper bending steel The height of the height of piece and lower bending steel disc, the highly half for monopole group height, further according to bipolar group of height adjustment to just The height for compressing pole group well, to achieve the purpose that be fixed pole group.The bottom of the upper bending steel disc is close to tab Position and the top of lower bending steel disc are set as fillet close to the position of tab.The upper bending steel disc and lower bending steel disc Front be equipped with limit bending steel disc, one end of limit bending steel disc is equipped with semicircle detent, limit bending steel disc insertion lithium from Between the upper cover and connection sheet of sub- Cell Bipolar group.
The invention also discloses a kind of bending methods of bipolar group of tab apparatus for bending of lithium ion battery, it includes following step Rapid: upper bottom plate is adjusted to the just parallel height for compressing pole group according to the width of Cell Bipolar group, in rotation by step 1 The distance between upper bending steel disc and lower bending steel disc are adjusted to the half of monopole group width by fixed cover board, further according to tab bending The limit bending baffle that the height adjustment of place and pole group is connected with lower fixed pedestal, is adjusted to and tab bending part to pole group bottom Apart from identical;Upper fixed cover board rotation is raised, battery core is placed on the lower fixed pedestal of adjusted good position by step 2; Fixed cover board is put down, the position of tab and upper and lower bending steel disc is then finely tuned, upper and lower bending steel disc is made to be in tab bending part; Step 3 will limit between bending steel disc insertion upper cover and connection sheet in cover board, make steel disc and pole clamping;Step 4, along Horizontal direction inwardly pushes away cell cover, makes tab and cover board connection sheet at S-shaped.
The invention has the following advantages: the present invention has been reached using limit makes pole after using above technical scheme The more accurate bending of ear bending is to ideal bending degree, the inconsistent and folding of bending position when avoiding manually bending Curved degree is not achieved and the problem that causes tab to encounter shell short circuit after entering shell, and to pole piece when reducing manually bending Spoilage.And device is simple, easily operated work pile line operation, improve battery security and reduce battery short circuit ratio and Scrappage guarantees that the consistency of tab bending and accuracy rate are very important.Upper cover fixed plate of the present invention and lower fixed pedestal For two parts of separated adjustment height, the height of bending steel disc and the height of lower bending steel disc are gone up by adjusting, is highly monopole The half of group height is fixed pole group to reach further according to bipolar group of height adjustment to the height for just compressing pole group Purpose.The adjustable limiting baffle according to the length of tab bending part to pole group bottom by track come adjustable range, Gu Determine pole group, makes group pole group in bending in pole tab bending position and bending degree will not be caused inconsistent due to play backward, protect The consistency of tab bending is demonstrate,proved, and tab will not pull pole group wherein half still in the middle position of pole group in bending Pole piece and tab so that uniform force when tab bending.Wherein upper bending steel disc and lower bending steel disc are close to the position of tab For fillet, the damage caused in bending tab to tab is avoided, and is more advantageous to the bending angle that bending tab reaches desired Degree.The front of bending steel disc and lower bending steel disc is equipped with limit bending steel disc in the present invention, and one end of limit bending steel disc is equipped with Semicircle detent, limit bending steel disc are inserted between bipolar group of lithium ion battery of upper cover and connection sheet, can when carrying out bending Fixed bending steel disc will not play and influence bending.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the front schematic diagram of Fig. 1.
Fig. 4 is the schematic diagram of step 2 when the present invention uses.
Fig. 5 is the schematic diagram of step 4 when the present invention uses.
Fig. 6 is the schematic diagram that apparatus of the present invention bending tab is completed.
Fig. 7 is the schematic diagram of limit bending steel disc clamping pole in the cover board of step 3 in apparatus of the present invention application method.
The enlarged diagram that Fig. 8 is in Fig. 6 I.
Specific embodiment
In fig. 1, fig. 2 and fig. 3, the present invention provides a kind of bipolar group of tab apparatus for bending of lithium ion battery, it is main Including upper fixed cover board 1 and lower fixed pedestal 2, the cross section of upper fixed cover board 1 is lateral L shape, the lower fixed pedestal 2 Cross section be lateral L shape, one end of upper fixed cover board 1 is set as bending end, and one end of lower fixed pedestal 2 is set as bending End, the bending end of upper fixed cover board 1 and the bending end of lower fixed pedestal 2 are rotation connection, the bending of the upper fixed cover board 1 End is rotation connection by the bending end of connection shaft 9 and lower fixed pedestal 2, and upper fixed cover board 1 is rotated around lower fixed pedestal 2, Gap I 3 is equipped between upper fixed cover board 1 and lower fixed pedestal 2, the other end of upper fixed cover board 1 is connected with adjustable height Upper bending steel disc 4, to be detachably connected between upper bending steel disc 4 and upper fixed cover board 1, the other end of lower fixed pedestal 2 connects It is connected to height-adjustable lower bending steel disc 5, is detachably connected between lower bending steel disc 5 and lower fixed pedestal 2, in lower fixation The upper surface of pedestal 2 is equipped with limit bending baffle, and limit bending baffle includes parallel-plate part 6 and vertical plate part 7, parallel-plate Part 6 is integral with the setting of vertical plate part 7, is equipped with track, the bottom of parallel-plate part 6 in the upper surface of lower fixed pedestal 2 In orbit, parallel-plate part 6 is to be detachably connected with track by screw III 8, and vertical plate part 7 is under for the sliding rail installation in portion Gap II between bending steel disc 5 is set as tab placement space, and limit bending baffle is slided in orbit by sliding rail to adjust The distance of tab placement space is saved, bending baffle is limited according to tab bending part and moves limit bending to the length of pole group bottom Baffle, thus keep tab bending part corresponding at a distance from tab placement space to the length of pole group bottom, upper bending described in 5 Steel disc 4 is from top to bottom equipped with several screw holes I, if bending steel disc 4 is from top to bottom equipped with four screw holes I on the present embodiment, upper solid The other end for determining cover board 1 also is provided with screw hole II, screw hole II and upper 4 respective heights of bending steel disc in upper fixed 1 other end of cover board Screw hole I in insertion screw I 10 other end of upper fixed cover board 1 is connect with upper bending steel disc 4 and can realize upper bending steel disc 4 The adjusting of height, the lower bending steel disc 5 are from top to bottom equipped with several screw holes III, under the present embodiment bending steel disc 5 by up to Screw hole III there are four dividing into, also is provided with screw hole IV in the other end of lower fixed pedestal 2, in the screw hole of lower 2 other end of fixed pedestal IV and lower bending steel disc respective heights screw hole III in insertion screw II 11 by the other end of lower fixed pedestal 2 and lower bending steel disc 5 connect and can realize the adjusting of lower 5 height of bending steel disc, and upper cover fixed plate 1 and lower fixed pedestal 2 are separate adjustment height two Part, by adjusting the height of upper bending steel disc 4 and the height of lower bending steel disc 5, the highly half for monopole group height, then root According to bipolar group of height adjustment to the height for just compressing pole group, to achieve the purpose that be fixed pole group, the upper folding The bottom of curved steel disc 4 is set as fillet close to the position of tab close to the position of tab and the top of lower bending steel disc 5, described Upper bending steel disc 4 and the front of lower bending steel disc 5 be equipped with limit bending steel disc 12, one end of limit bending steel disc 12 is equipped with half Round detent, limit bending steel disc 12 are inserted between bipolar group of lithium ion battery of upper cover and connection sheet.
The invention also discloses a kind of bending methods of bipolar group of tab apparatus for bending of lithium ion battery, it includes following step Rapid: upper bottom plate is adjusted to the just parallel height for compressing pole group according to the width of Cell Bipolar group, in rotation by step 1 The distance between upper bending steel disc 4 and lower bending steel disc 5 are adjusted to the half of monopole group width by fixed cover board 1, further according to tab The limit bending baffle that the height adjustment of bending part and pole group is connected with lower fixed pedestal 2 is adjusted to and tab bending part to pole group The distance of bottom is identical;The upper fixed rotation of cover board 1 is raised, battery core is placed on to the lower fixation of adjusted good position by step 2 On pedestal 2;Fixed cover board 1 is put down, the position of tab and upper bending steel disc 4 and lower bending steel disc 5 is then finely tuned, makes vertical folding Curved steel disc is respectively at tab bending part;Step 3 is inserted into bending steel disc 12 is limited in cover board between upper cover and connection sheet, is made Steel disc and pole clamping;Step 4 inwardly pushes away cell cover along horizontal direction, makes tab and cover board connection sheet at S-shaped.

Claims (7)

1. a kind of bipolar group of tab apparatus for bending of lithium ion battery, it is characterized in that it mainly includes upper fixed cover board (1) He Xiagu To determine pedestal (2), one end of upper fixed cover board (1) is set as bending end, and one end of lower fixed pedestal (2) is set as bending end, on The bending end of fixed cover board (1) and the bending end of lower fixed pedestal (2) are rotation connection, and upper fixed cover board (1) is around lower fixed base Seat (2) rotation, equipped with gap I (3) between upper fixed cover board (1) and lower fixed pedestal (2), upper fixed cover board (1) it is another End is connected with height-adjustable upper bending steel disc (4), is detachably to connect between upper bending steel disc (4) and upper fixed cover board (1) It connects, the other end of lower fixed pedestal (2) is connected with height-adjustable lower bending steel disc (5), lower bending steel disc (5) and lower fixation To be detachably connected between pedestal (2), it is equipped with limit bending baffle in the upper surface of lower fixed pedestal (2), limits bending baffle Including parallel-plate part (6) and vertical plate part (7), parallel-plate part (6) are integral with vertical plate part (7) setting, The upper surface of lower fixed pedestal (2) is equipped with track, and the sliding rail of the bottom of parallel-plate part (6) is installed in orbit, parallel-plate portion Dividing (6) to pass through screw III (8) with track is to be detachably connected, the gap II between vertical plate part (7) and lower bending steel disc (5) It is set as pole group placement space, limit bending baffle is slided by sliding rail in orbit to adjust the distance of pole group placement space, Limit bending baffle moves limit bending baffle to the length of pole group bottom according to tab bending part, to make tab bending part Length to pole group bottom is corresponding at a distance from tab placement space.
2. bipolar group of tab apparatus for bending of lithium ion battery according to claim 1, it is characterized in that the upper fixed lid The cross section of plate (1) is lateral L shape, and the cross section of the lower fixed pedestal (2) is lateral L shape.
3. bipolar group of tab apparatus for bending of lithium ion battery according to claim 1 or 2, it is characterized in that the upper fixation The bending end of cover board (1) is rotation connection by the bending end of connection shaft (9) and lower fixed pedestal (2).
4. bipolar group of tab apparatus for bending of lithium ion battery according to claim 1, it is characterized in that the upper bending steel Piece (4) is from top to bottom equipped with several screw holes I, screw hole II also is provided in the other end of upper fixed cover board (1), in upper fixed cover board (1) screw I (10) are inserted by upper fixed cover board (1) in the screw hole II of the other end and the screw hole I of upper bending steel disc (4) respective heights The other end connect with upper bending steel disc (4) and can realize the adjusting of upper bending steel disc (4) height, the lower bending steel disc (5) several screw holes III are from top to bottom equipped with, screw hole IV also are provided in the other end of lower fixed pedestal (2), in lower fixed pedestal (2) Screw II (11) are inserted into the screw hole IV of the other end and the screw hole III of lower bending steel disc (5) respective heights by lower fixed pedestal (2) The other end connect and can realize the adjusting of lower bending steel disc (5) height with lower bending steel disc (5), upper cover fixed plate (1) and under Fixed pedestal (2) is the two parts for separating adjustment height, by adjusting the above height of bending steel disc (4) and lower bending steel disc (5) Height, the highly half for monopole group height, further according to bipolar group of height adjustment to the height for just compressing pole group, thus Achieve the purpose that be fixed pole group.
5. bipolar group of tab apparatus for bending of lithium ion battery according to claim 1, it is characterized in that the upper bending steel The bottom of piece (4) is set as fillet close to the position of tab close to the position of tab and the top of lower bending steel disc (5).
6. bipolar group of tab apparatus for bending of lithium ion battery according to claim 1, it is characterized in that the upper bending steel The front of piece (4) and lower bending steel disc (5) is equipped with limit bending steel disc (12), and one end of limit bending steel disc (12) is equipped with semicircle Shape detent, limit bending steel disc (12) are inserted between bipolar group of lithium ion battery of upper cover and connection sheet.
7. a kind of bending method of bipolar group of tab apparatus for bending of lithium ion battery, feature it the following steps are included:
Upper bottom plate is adjusted to the just parallel height for compressing pole group, rotation according to the width of Cell Bipolar group by step 1 The distance between upper bending steel disc (4) and lower bending steel disc (5) are adjusted to the half of monopole group width by upper fixed cover board (1), then According to the limit bending baffle that the height adjustment of tab bending part and pole group is connected with lower fixed pedestal (2), it is adjusted to roll over tab The distance of crook to pole group bottom is identical;
Upper fixed cover board (1) rotation is raised, battery core is placed on the lower fixed pedestal (2) of adjusted good position by step 2; Fixed cover board (1) is put down, the position of tab and upper bending steel disc (4) and lower bending steel disc (5) is then finely tuned, makes bending up and down Steel disc is in tab bending part;
Step 3 will limit between bending steel disc (12) insertion upper cover and connection sheet in cover board, make steel disc and pole clamping;
Step 4 inwardly pushes away cell cover along horizontal direction, makes tab and cover board connection sheet at S-shaped.
CN201811584686.8A 2018-12-24 2018-12-24 Bending device and bending method for lithium battery bipolar group tab Active CN109550817B (en)

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Publication number Priority date Publication date Assignee Title
CN110165135A (en) * 2019-05-30 2019-08-23 超威电源有限公司 The side negative plate of a kind of battery and battery pinches tab method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110165135A (en) * 2019-05-30 2019-08-23 超威电源有限公司 The side negative plate of a kind of battery and battery pinches tab method

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