CN102364721B - Battery tab forming apparatus - Google Patents
Battery tab forming apparatus Download PDFInfo
- Publication number
- CN102364721B CN102364721B CN2011103264737A CN201110326473A CN102364721B CN 102364721 B CN102364721 B CN 102364721B CN 2011103264737 A CN2011103264737 A CN 2011103264737A CN 201110326473 A CN201110326473 A CN 201110326473A CN 102364721 B CN102364721 B CN 102364721B
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- China
- Prior art keywords
- moving knife
- blade
- forming apparatus
- battery tab
- guiding module
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- 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
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a battery tab forming apparatus. The apparatus comprises two sets of mobile cutters and static cutters. The mobile cutters and the static cutters are juxtaposed in pairs. The distance between the two sets of mobile cutters and static cutters is equal to the width of a battery tab. The sum of the lengths of the two sets of mobile cutters is larger than or equal to the distance between neighboring battery tabs. Each mobile cutter is formed by two subordinate mobile blades forming a recess. The cutting edge of each subordinate mobile blade is in an angled structure. One side of the angle accords with the shape of one side of the battery tab. The other side of the angle accords with the shape of a recess bottom between neighboring battery tabs. The mobile cutters carry out straight reciprocating movements under the controlling of a driving apparatus. With the battery tab forming apparatus provided by the invention, battery tab shapes can be directly processed on an electrode sheet, wherein a metal foil is cut into battery tabs. The battery tabs and the metal foil are integrated, such that basically no spike is appeared. Therefore, short circuit inside a battery caused by battery tab spike can be avoided.
Description
Technical field
The present invention relates to a kind of battery pole ear process equipment, particularly a kind of battery tab forming apparatus.
Background technology
The battery core of lithium ion battery is comprised of cathode sheet, anode pole piece, barrier film etc., wherein barrier film separates anode and cathode slice mutually and does not contact, anode and cathode slice is shaped with flange-lug on edge, by lug, realizes being connected with the outside batteries both positive and negative polarity, and battery charging and discharging can be carried out smoothly.
The base material of the anode and cathode slice of lithium battery is the super thin metal paillon foil that thickness only has 0.01-0.02mm, because being difficult to shear, paillon foil is shaped, the current battery lug often adopts welding manner to make, and lug separates making with pole piece, and then by tab welding on the base material of pole piece.The battery of making monopole ear by this kind of method is feasible, but for the multi pole ears high capacity cell, exist the internal resistance of cell large, complex process, lug spacing are difficult for controlling, the shortcomings such as welding stability is poor, pole piece became uneven, rate of finished products is low, homogeneity of product is bad.Adopt the welded type lug to produce larger side effect to the quality of battery, manufacturing cost etc.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, and provide a kind of pole piece and lug to be integrated, and can improve reliability and the consistency of product, also can guarantee the uniformity of pole piece thickness simultaneously, greatly facilitate production, improve a kind of battery tab forming apparatus of properties of product.
A kind of battery tab forming apparatus, its structural feature is: comprise moving knife and the quiet cutter of two groups, moving knife and quiet cutter are set up in parallel in pairs, distance between two groups of sound cuttves equals the width of a lug, the length sum of two groups of moving knife is more than or equal to the distance between adjacent lug, each moving knife consists of two minute cutting blades that surround groove type, the blade of each minute cutting blade is angled construction, the one side at angle conforms to a side edge shape of lug, the another side at angle conforms to the bottom land shape between adjacent lug, described moving knife is driven and is done linear reciprocating motion by drive unit.
The battery tab forming apparatus of this structure, between the tinsel exposed area at pole piece base material edge being filled in to the sound blade of two groups in when work, the work of driving moving knife, the sound cutter of each group is sheared from the both sides of lug respectively, formed space, interval between two groups of sound blades is lug, also shear out part or all of bottom land simultaneously, after the shaping release, the pole piece tape running, pause in the position that need be shaped at the next one, movable cutter set work, the lug that shearing makes new advances also is shaped bottom land, just a plurality of lugs so repeatedly can be shaped on pole piece.
The distance that the length sum of two groups of moving knife is more than or equal between adjacent lug can guarantee to cut into smoothly needed shape
.
Adopt two minutes cutting blades of breakaway-element to form the moving knife of each group, be conducive to like this moving knife and quiet cutter is fitted fully, be conducive to eliminate because of mismachining tolerance, the moving knife that uses the factor such as abrasion to cause and the fit clearance of quiet cutter, guarantee that moving knife cutting lug is the overall process shear history, be conducive to control the shearing defects such as shear burr, can significantly improve cutter life, cutting die, as long as changing moving knife just can produce again, significantly reduces the cutting die cost simultaneously.
Described battery tab forming apparatus also includes the moving knife guiding module, the blade of described moving knife is done straight reciprocating motion along moving knife guiding module inner chamber, described moving knife guiding module is arranged at the top of quiet cutter, between quiet cutter and moving knife guiding module, is provided with and holds the gap that pole piece passes through.
The moving knife guiding module is set in building mortion, but the action of precise guidance moving knife, thus guarantee the accuracy of shearing.
Described guiding module inwall is provided with convex tendon.
Inwall at guiding module arranges convex tendon, makes the inwall concave-convex surface structure of guiding module, is conducive to the trouble-free operation of moving knife.
The convex tendon of described guiding module inwall is arranged on splicing place of two moving knife on guiding module and the corner on moving knife.
Be provided with gap between the blade of described quiet cutter and guiding module convex tendon.
Between the blade of quiet cutter and guiding module convex tendon, gap is set, while guaranteeing that moving knife moves downward and between quiet cutter, does shearing motion.
The gap arranged between the blade of described quiet cutter and guiding module convex tendon is 50 microns to 0.2 bold and unconstrained meter.
Described moving knife is installed on the moving knife holder by the flexible adjustment device, and the flexible adjustment device is pressed in moving knife on the moving knife guiding module.
Cutting blade is installed on the moving knife holder by the flexible adjustment device, and gapless between moving knife and quiet cutter in the time of so just can guaranteeing to shear, guarantee the quality of shearing.
Described flexible adjustment device is that spring forms, and an end of spring is supported on the moving knife holder, and the other end is supported on moving knife.
On guiding module, be provided with for guiding moving knife to do the guide rail of straight reciprocating motion.
Guide rail is set on guiding module, can improves the motion accuracy of moving knife.
Described guide rail is journal bearing.
Be provided with gap between minute cutting blade of each group moving knife two symmetric arrays.
Be provided with gap between two minutes cutting blades, can prevent that two minutes cutting blades from interfering, in order to process smoothly required lug.
The blade intersection of each component cutting blade is for being staggered.
Being staggered of the blade of minute cutting blade of two symmetric arrays can guarantee the integrality of cutting.
Blade of each minute cutting blade is for being from that side identical with lug to that side identical with the bottom land shape end of by high gradient tendency, near quiet cutter the time with on moving knife with lug the identical first close quiet cutter of that side tool sword.The moving knife of this structure, when shearing, inwardly sheared gradually by the edge of pole piece.
Being staggered of two transfer knife-blade extends to another minute cutting blade place and covers a bit of of another minute cutting blade for the blade of one minute cutting blade wherein, another minute cutting blade that a part of blade in intersection is that edge is high, the gradient tendency then dropped gradually inward.
Drive moving knife to make the drive unit of linear reciprocating motion or for hydraulic cylinder or for cylinder etc.
Described moving knife holder is installed on upper connective plate.
In sum, the present invention's following advantage compared to existing technology:
Adopt battery tab forming apparatus of the present invention, can directly on pole piece, process the lug shape, tinsel is excised to form the lug shape, lug and tinsel are integrated, the lug that processed like this, essentially no burr, eliminate tab burrs and cause internal short-circuit of battery.
The accompanying drawing explanation
Fig. 1 is the structural representation of battery tab forming apparatus of the present invention.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the structural representation of the moving knife assembly of the embodiment of the present invention.
Fig. 5 is the upward view of Fig. 4.
Fig. 6 is the A place enlarged drawing of Fig. 5.
Fig. 7 is the schematic diagram of quiet cutter and moving knife guiding module.
Be provided with gap 5 upper connective plate 6 base 7 flexible adjustment device 8 guide rail 9 upper connective plates that hold pole piece between convex tendon 42 cuttves on quiet cutter 3 moving knife holder 4 moving knife guiding module 41 guiding modules of that side 2 that one side 12 of minute cutting blade that label declaration 1 moving knife 11 conforms to the lug side edge shape conforms to the bottom land shape between adjacent lug and moving knife guiding module.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
A kind of battery tab forming apparatus as shown in Fig. 1-7, comprise moving knife 1, quiet cutter 2, moving knife holder 3, moving knife guiding module 4, upper connective plate 5 and base 6.Comprise two groups of moving knife that are set up in parallel and quiet cutter, moving knife and quiet cutter arrange in pairs, distance between two groups of sound cuttves equals the width of a lug, the length sum of two groups of moving knife is more than or equal to the distance between adjacent lug, each moving knife consists of two minute cutting blades that surround groove type, the blade of each minute cutting blade is angled construction, the one side at angle conforms to 11 with a side edge shape of lug, and the another side at angle conforms to 12 with bottom land shape between adjacent lug, described moving knife is driven and done linear reciprocating motion by drive unit.Be provided with gap between two minutes cutting blades, the blade intersection of two minutes cutting blades is for being staggered.Described battery tab forming apparatus also includes the moving knife guiding module, the blade of described moving knife is done straight reciprocating motion along moving knife guiding module inner chamber, described moving knife guiding module is arranged at the top of quiet cutter, is provided with the gap 42 that holds pole piece between quiet cutter and moving knife guiding module.The guiding module inwall is provided with convex tendon 41.The convex tendon of guiding module inwall is arranged on splicing place of two moving knife on guiding module and the corner on moving knife.Be provided with 0.1 person of outstanding talent meter gap between the blade of quiet cutter and guiding module convex tendon.Described moving knife is driven and is done linear reciprocating motion by drive unit.Described drive unit is hydraulic cylinder.Described moving knife is installed on the moving knife holder by flexible adjustment device 7, and the flexible adjustment device is pressed in moving knife on the moving knife guiding module.Described flexible adjustment device is that spring forms, and an end of spring is supported on the moving knife holder, and the other end is supported on moving knife.On guiding module, be provided with for guiding moving knife to do the guide rail formed by journal bearing 8 of straight reciprocating motion.Described guiding module is installed on base 6.Described moving knife holder is installed on upper connective plate 9.Blade of each minute cutting blade is for being from that side identical with lug to that side identical with the bottom land shape end of by high gradient tendency, near quiet cutter the time with on moving knife with lug the identical first close quiet cutter of that side tool sword.Being staggered of two transfer knife-blade extends to another minute cutting blade place and covers a bit of of another minute cutting blade for the blade of one minute cutting blade wherein, another minute cutting blade that a part of blade in intersection is that edge is high, the gradient tendency then dropped gradually inward.
It is same as the prior art that the present embodiment is not stated part.
Claims (9)
1. a battery tab forming apparatus, it is characterized in that: comprise moving knife and the quiet cutter of two groups, moving knife and quiet cutter are set up in parallel in pairs, distance between two groups of sound cuttves equals the width of a lug, the length sum of two groups of moving knife is more than or equal to the distance between adjacent lug, each moving knife consists of two minute cutting blades that surround groove type, the blade of each minute cutting blade is angled construction, the one side at angle conforms to a side edge shape of lug, the another side at angle conforms to the bottom land shape between adjacent lug, described moving knife is driven and is done linear reciprocating motion by drive unit, described battery tab forming apparatus also includes the moving knife guiding module, the blade of described moving knife is done straight reciprocating motion along moving knife guiding module inner chamber, described moving knife guiding module is arranged at the top of quiet cutter, be provided with and hold the gap that pole piece passes through between quiet cutter and moving knife guiding module.
2. battery tab forming apparatus according to claim 1, is characterized in that: at the guiding module inwall, be provided with convex tendon.
3. battery tab forming apparatus according to claim 2, it is characterized in that: the convex tendon of described guiding module inwall is arranged on splicing place of two moving knife on guiding module and the corner on moving knife.
4. battery tab forming apparatus according to claim 3, is characterized in that: between the blade of described quiet cutter and guiding module convex tendon, be provided with gap.
5. battery tab forming apparatus according to claim 4, it is characterized in that: the gap arranged between the blade of described quiet cutter and guiding module convex tendon is 50 microns to 0.2 millimeter.
6. battery tab forming apparatus according to claim 5, it is characterized in that: described moving knife is installed on the moving knife holder by the flexible adjustment device, and the flexible adjustment device is pressed in moving knife on the moving knife guiding module.
7. battery tab forming apparatus according to claim 6, it is characterized in that: the blade intersection of each component cutting blade is for being staggered.
8. according to any one described battery tab forming apparatus of claim 1 to 7, it is characterized in that: blade of each minute cutting blade is for being from that side identical with lug to that side identical with the bottom land shape end of by high gradient tendency, near quiet cutter the time with on moving knife with lug the identical first close quiet cutter of that side tool sword.
9. battery tab forming apparatus according to claim 8, it is characterized in that: being staggered of two transfer knife-blade extends to another minute cutting blade place and covers a bit of of another minute cutting blade for the blade of one minute cutting blade wherein, another minute cutting blade that a part of blade in intersection is that edge is high, the gradient tendency then dropped gradually inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103264737A CN102364721B (en) | 2011-10-24 | 2011-10-24 | Battery tab forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103264737A CN102364721B (en) | 2011-10-24 | 2011-10-24 | Battery tab forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102364721A CN102364721A (en) | 2012-02-29 |
| CN102364721B true CN102364721B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103264737A Expired - Fee Related CN102364721B (en) | 2011-10-24 | 2011-10-24 | Battery tab forming apparatus |
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| Country | Link |
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| CN (1) | CN102364721B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610781B (en) * | 2012-04-16 | 2016-06-22 | 东莞新能源科技有限公司 | Battery pole ear forming machine and battery pole ear manufacturing process |
| CN106328879B (en) * | 2015-06-30 | 2022-09-23 | 宁德时代新能源科技股份有限公司 | Battery tab forming equipment and battery tab forming method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015867A (en) * | 2007-03-06 | 2007-08-15 | 杭州万马高能量电池有限公司 | Full-automatic lug cutting machine |
| CN101774041A (en) * | 2010-02-08 | 2010-07-14 | 深圳市赢合科技有限公司 | Tab cutting device |
| CN102101307A (en) * | 2010-12-30 | 2011-06-22 | 宁德新能源科技有限公司 | Combined cutter die for forming lithium battery tab |
| CN202241459U (en) * | 2011-10-24 | 2012-05-30 | 陈红勇 | Battery tab forming device |
-
2011
- 2011-10-24 CN CN2011103264737A patent/CN102364721B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015867A (en) * | 2007-03-06 | 2007-08-15 | 杭州万马高能量电池有限公司 | Full-automatic lug cutting machine |
| CN101774041A (en) * | 2010-02-08 | 2010-07-14 | 深圳市赢合科技有限公司 | Tab cutting device |
| CN102101307A (en) * | 2010-12-30 | 2011-06-22 | 宁德新能源科技有限公司 | Combined cutter die for forming lithium battery tab |
| CN202241459U (en) * | 2011-10-24 | 2012-05-30 | 陈红勇 | Battery tab forming device |
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| Publication number | Publication date |
|---|---|
| CN102364721A (en) | 2012-02-29 |
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Granted publication date: 20130612 Termination date: 20151024 |
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| EXPY | Termination of patent right or utility model |