CN106410104A - Cylindrical battery with multiple polar lugs and manufacturing method thereof - Google Patents
Cylindrical battery with multiple polar lugs and manufacturing method thereof Download PDFInfo
- Publication number
- CN106410104A CN106410104A CN201610728934.6A CN201610728934A CN106410104A CN 106410104 A CN106410104 A CN 106410104A CN 201610728934 A CN201610728934 A CN 201610728934A CN 106410104 A CN106410104 A CN 106410104A
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- core
- end cap
- battery
- lug
- pole
- Prior art date
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Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 210000000078 claw Anatomy 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 20
- 230000005405 multipole Effects 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a cylindrical battery with multiple polar lugs and a manufacturing method thereof. The cylindrical battery with multiple polar lugs comprises a hollow cylindrical shell, a coiled core arranged in the shell, and a positive electrode end cover and a negative electrode end cover both used for sealing the shell; electric core polar lugs are respectively arranged at the two ends of the coiled core; the positive electrode end cover and the negative electrode end cover are provided with polar columns used for exporting current and soft connectors connected with the polar columns; and the soft connectors of the positive electrode end cover and the negative electrode end cover are connected with electric core polar lugs at the end parts of the coiled core respectively through current collecting claws located at the inner sides. The cylindrical battery with multiple polar lugs is simple in structure and convenient to install; and as the soft connectors of the positive electrode end cover and the negative electrode end cover are connected with the electric core polar lugs at the end parts of the coiled core respectively through the current collecting claws located at the inner sides, the over-current capability of the battery is not only concerned, but also the shock resistance and the electric conduction stability of the battery are improved.
Description
Technical field
The present invention relates to technical field of lithium ion is and in particular to a kind of cylinder multi-pole ear battery and its manufacturer
Method.
Background technology
The cylindrical lithium ion battery of early stage adopts monopole ear to design, i.e. ultra-sonic welded lug drawing and top cover on pole piece
Welded together, but this manufacture method needs reserve lug on pole piece and are left white for soldering polar ear, so can lose one
Divide battery capacity, if being changed to the mode of the multiple lug of ultra-sonic welded, production efficiency, capacity all can substantially reduce.
CN201520431840.3 proposes and leaves some space foil in positive/negative plate outer end, and at battery core two ends after being wound into core
The method being respectively welded the piece that confluxes in plane rubbed by empty paper tinsel, and this method does not need to reserve being left white of soldering polar ear on pole piece, because
This does not have the loss of capacity, but the contact rubbed due to foil between putting down afterwards is still very tight, and due to rubbing the thickness of plane
Degree less, when using laser will conflux piece with rub plane-welding to together with when, once burn-through current collecting plates will damage core.If
Reduce laser power, weld strength then cannot ensure, the piece that confluxes easily comes off plane from rubbing.CN201410371930.8 proposes
A kind of full lug current collecting plates, are made up of two parts, insulating barrier and conductive layer, insulating barrier have narrow with lines with electric core winding
Seam, is evenly distributed with the tiny rectangle osculum of electrolysis liquid entrance between slit, insulating barrier slit top edge plates 1.5mm width
Conductive copper wire；During welding, the battery core of winding is left white through current collecting plates slit, exceeds 1.5mm, then flanging, cover
In conducting copper belt, using the welding of continuous laser solder technology.Although this patent can realize the welding of all lugs and current collecting plates,
But this scheme requires core to be left white slit through current collecting plates, complex operation, less efficient it is impossible to carry out large-batch industrial life
Produce.
Content of the invention
It is an object of the invention to provide a kind of simple to operate, efficiency is higher, and can take into account the circle of the conveyance capacity of battery
Cylindricality multi pole ears battery and its manufacture method.
For achieving the above object, present invention employs technical scheme below：
A kind of cylinder multi-pole ear battery, the core including the housing of hollow cylindrical, being placed in housing and be used for seal casinghousing
Anode end cap and negative pole end cap, described core be respectively arranged at two ends with cell polar ear, on described anode end cap and negative pole end lid
It is equipped with for the pole of derived current and being flexible coupling of being connected with pole, being flexible coupling point of described anode end cap and negative pole end cap
It is not connected with the cell polar ear of core end by afflux pawl on its inside.
In such scheme, described cell polar ear is two and is oppositely arranged on core end and in fan-shaped boss, this boss
Axisymmetrical distribution along described core.
In such scheme, described afflux pawl includes fixed block and conflux lug and the claw that are connected with fixed block, described
Claw is two groups and be oppositely arranged with cell polar ear respectively, and every group of claw is formed by the welding rod of two circular arcs, two welding rods
Between contour shape match with the contour shape of described boss, described conflux lug and the described welding that is flexible coupling.
In such scheme, described cell polar ear and core are integral type structure.
In such scheme, described anode end cap is provided with liquid injection hole, and negative pole end lid is provided with explosion-proof valve.
A kind of manufacture method of cylindrical battery, comprises the following steps：
（1）Take the mode being longitudinally continuous coating to coat material on a current collector, be equipped between collector both sides, dispensing area
Strip is left white, and makes battery anode slice and negative plate is standby；
（2）By the battery anode slice after coating and negative plate after roll-in cutting, blank space is cut into by lug using laser；
（3）Positive plate, negative plate are superimposed and are wound into circle according to the mode of " negative plate-barrier film-positive plate-barrier film " with barrier film
Post core, the lug of described positive plate and negative plate is located at core two ends respectively；
（4）Afflux pawl and lug are assembled together and weld, outside afflux pawl, paste high-temperature insulation adhesive tape；
（5）Core is encased in housing；
（6）By afflux pawl and anode end cap, negative pole end cap be flexible coupling welded together, and will be flexible coupling and be folded into zigzag；
（7）Anode end cap and negative pole end cap are installed on housing, and carry out laser welding, make battery；
（8）Battery is carried out toasting, fluid injection, chemical conversion, sealing.
In above-mentioned steps, described lug width and lug spacing meet following requirement：After the completion of core winding, adjacent
Lug forms fan-shaped distribution.
As shown from the above technical solution, cylinder multi-pole ear battery of the present invention, structure is simple, easy for installation, its
In, the cell polar ear phase by afflux pawl on its inside and core end respectively that is flexible coupling of anode end cap and negative pole end cap
Even, the conveyance capacity of battery can not only be taken into account, also improve the shock resistance of battery and the stability of conduction simultaneously.This cylinder
Multi pole ears battery during fabrication, by by be left white cut into lug by way of ensure that the capacity of battery, the design of multi pole ears and
The welding manner of afflux pawl also ensure that the high rate during charging-discharging of battery, is beneficial to batch production simultaneously.
Brief description
Fig. 1 is the structural representation of cylinder multi-pole ear battery of the present invention；
Fig. 2 is the explosive view of cylinder multi-pole ear battery of the present invention；
Fig. 3 is the structural representation of core of the present invention；
Fig. 4 is the structural representation of afflux pawl of the present invention；
Fig. 5 is the structural representation of anode end cap of the present invention；
Fig. 6 is the structural representation of negative pole end cap of the present invention；
Fig. 7 is the ear moulding process figure of pole piece of the present invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1, 2, the cylinder multi-pole ear battery of the present embodiment, including the housing 10 of hollow cylindrical, is placed in housing 10
Interior core 11 and the anode end cap 17 for seal casinghousing 10 and negative pole end cap 12, divide in the positive terminal of core 11 and negative pole end
It is not provided with cell polar ear 13, this anode end cap 17 and negative pole end cap 12 are equipped with pole 14 and and pole for derived current
14 be connected be flexible coupling 15, being flexible coupling of anode end cap 17 and negative pole end cap 12 15 passes through afflux pawl 16 on its inside respectively
Mutually weld with the cell polar ear 13 of core 11 end.
As shown in figure 3, this cell polar ear 13 is oppositely arranged on core 11 end and in fan-shaped boss, this boss for two
Axisymmetrical distribution along core 11.
As shown in figure 4, this afflux pawl 16 includes fixed block 161 and conflux lug 162 and the card that are connected with fixed block 161
Pawl 163, claw 163 is two groups and be oppositely arranged with cell polar ear 13 respectively, and every group of claw 163 is by the welding rod of two circular arcs
Composition, the contour shape between two welding rods and the contour shape of boss match, and when mounted, cell polar ear 13 are put into two
At gap between the claw 163 of bar welding rod composition, clutch welding rod, so that welding rod and cell polar ear 13 is fitted tightly, then will weld
Bar and cell polar ear 13 are welded together, then will conflux lug 162 and 15 mutually weld with being flexible coupling, the lug 162 that confluxes after welding
When mounted, its bending is placed in housing 10 in zigzag, shown in Fig. 4 be in afflux pawl 16, to conflux lug 162 non-bending when
Structural representation, the lug 162 that confluxes after bending is as shown in Figure 1.In the present embodiment, this cell polar ear 13 and core 11 are one
Body shaping structure.
As shown in Figure 5,6, anode end cap 17 is provided with liquid injection hole 171, and negative pole end cap 12 is provided with explosion-proof valve 121.
A kind of manufacture method of cylinder multi-pole ear battery, comprises the following steps：
S1：Take the mode being longitudinally continuous coating to coat material on a current collector, be equipped between collector both sides, dispensing area
Strip is left white, and makes battery anode slice and negative plate is standby；
S2：By the battery anode slice after coating and negative plate after roll-in cutting, blank space is cut into by lug using laser；
S3：Positive plate, negative plate are superimposed and are wound into circle according to the mode of " negative plate-barrier film-positive plate-barrier film " with barrier film
Post core 11, the lug of described positive plate and negative plate is located at core 11 two ends respectively；
S4：Afflux pawl 16 and lug 162 are assembled together and weld, afflux pawl 16 outside patch high-temperature insulation adhesive tape；
S5：Core 11 is encased in housing 10；
S6：15 welded together, and 15 foldings that will be flexible coupling that are flexible coupling by afflux pawl 16 and anode end cap 17, negative pole end cap 12
Become zigzag；
S7：Anode end cap 17 and negative pole end cap 12 are installed on housing 10, and carry out laser welding, tentatively make battery；
S8：Again battery is carried out toasting, fluid injection, chemical conversion, sealing complete the manufacture of battery.
Described lug width and lug spacing meet following requirement：After the completion of core 11 winding, adjacent cell polar ear
13 form fan-shaped distribution.As shown in fig. 7, in the pole piece length L completing required for a core, lug 13 width gradually becomes
Change, i.e. W1 ＜ W2 ＜ W3 ＜ ..., cell polar ear 13 spacing also gradually changes, i.e. L1 ＜ L2 ＜ ..., positive/negative plate all according to
This kind of mode carries out cell polar ear 13 molding.
Embodiment described above is only that the preferred embodiment of the present invention is described, the not model to the present invention
Enclose and be defined, on the premise of without departing from design spirit of the present invention, the technical side to the present invention for the those of ordinary skill in the art
Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.
Claims (7)
1. a kind of cylinder multi-pole ear battery it is characterised in that：Housing including hollow cylindrical（10）, be placed in housing（10）Interior
Core（11）And it is used for seal casinghousing（10）Anode end cap（17）With negative pole end cap（12）, described core（11）Two ends divide
It is not provided with cell polar ear（13）, described anode end cap（17）With negative pole end cap（12）On be equipped with pole for derived current
（14）And and pole（14）Connected is flexible coupling（15）, described anode end cap（17）With negative pole end cap（12）Be flexible coupling（15）Point
Afflux pawl that Tong Guo be not on its inside（16）With core（11）The cell polar ear of end（13）It is connected.
2. cylinder multi-pole ear battery according to claim 1 it is characterised in that：Described cell polar ear（13）For two phases
To being arranged on core（11）End and the boss in sector, this boss is along described core（11）Axisymmetrical distribution.
3. cylinder multi-pole ear battery according to claim 2 it is characterised in that：Described afflux pawl（16）Including fixed block
（161）And and fixed block（161）The lug that confluxes being connected（162）And claw（163）, described claw（163）For two groups and point
Not and cell polar ear（13）It is oppositely arranged, every group of claw（163）By the welding rod composition of two circular arcs, between two welding rods
Contour shape is matched with the contour shape of described boss, the described lug that confluxes（162）It is flexible coupling with described（15）Welding.
4. cylinder multi-pole ear battery according to claim 1 it is characterised in that：Described cell polar ear（13）With core
（11）For integral type structure.
5. cylinder multi-pole ear battery according to claim 1 it is characterised in that：Described anode end cap（17）It is provided with note
Fluid apertures（171）, negative pole end cap（12）It is provided with explosion-proof valve（121）.
6. a kind of manufacture method of cylinder multi-pole ear battery is it is characterised in that comprise the following steps：
（1）Take the mode being longitudinally continuous coating to coat material on a current collector, be equipped between collector both sides, dispensing area
Strip is left white, and makes battery anode slice and negative plate is standby；
（2）By the battery anode slice after coating and negative plate after roll-in cutting, blank space is cut into by lug using laser；
（3）Positive plate, negative plate are superimposed and are wound into circle according to the mode of " negative plate-barrier film-positive plate-barrier film " with barrier film
Post core, the lug of described positive plate and negative plate is located at core two ends respectively；
（4）Afflux pawl and lug are assembled together and weld, outside afflux pawl, paste high-temperature insulation adhesive tape；
（5）Core is encased in housing；
（6）By afflux pawl and anode end cap, negative pole end cap be flexible coupling welded together, and will be flexible coupling and be folded into zigzag；
（7）Anode end cap and negative pole end cap are installed on housing, and carry out laser welding, make battery；
（8）Battery is carried out toasting, fluid injection, chemical conversion, sealing.
7. cylinder multi-pole ear battery according to claim 6 manufacture method it is characterised in that：Described lug width and
Lug spacing meets following requirement：After the completion of core winding, adjacent lug forms fan-shaped distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728934.6A CN106410104B (en) | 2016-08-25 | 2016-08-25 | Cylindrical multi-tab battery and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728934.6A CN106410104B (en) | 2016-08-25 | 2016-08-25 | Cylindrical multi-tab battery and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106410104A true CN106410104A (en) | 2017-02-15 |
| CN106410104B CN106410104B (en) | 2023-03-24 |
Family
ID=58005027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610728934.6A Active CN106410104B (en) | 2016-08-25 | 2016-08-25 | Cylindrical multi-tab battery and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106410104B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331809A (en) * | 2017-06-30 | 2017-11-07 | 马鞍山首拓新能源科技有限公司 | Battery energy storage device and preparation method thereof |
| CN108550896A (en) * | 2018-05-29 | 2018-09-18 | 江苏海基新能源股份有限公司 | A kind of full lug coiling column lithium ion battery assembly method |
| CN108598354A (en) * | 2018-06-13 | 2018-09-28 | 东莞塔菲尔新能源科技有限公司 | A kind of multi pole ears battery core, multi-terminal battery, battery modules and preparation method thereof |
| CN109830737A (en) * | 2019-02-23 | 2019-05-31 | 镇江成泰自动化技术有限公司 | Multi pole ears power battery automatic assembling production method |
| CN110085778A (en) * | 2019-05-30 | 2019-08-02 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Battery case, lithium ion battery and Li-ion batteries piles |
| CN110247123A (en) * | 2019-06-17 | 2019-09-17 | 合肥国轩高科动力能源有限公司 | A kind of core strueture, manufacturing method and battery |
| CN110600795A (en) * | 2019-08-13 | 2019-12-20 | 合肥国轩高科动力能源有限公司 | Lithium ion cylindrical battery and processing method thereof |
| CN112259795A (en) * | 2020-04-30 | 2021-01-22 | 蜂巢能源科技有限公司 | Battery cell assembling method and battery cell |
| CN112290167A (en) * | 2020-12-30 | 2021-01-29 | 江苏时代新能源科技有限公司 | Battery cell, manufacturing method thereof, battery and electric device |
| CN113039681A (en) * | 2018-11-05 | 2021-06-25 | 特斯拉公司 | Battery with electrode without pole ear |
| CN113904037A (en) * | 2021-10-27 | 2022-01-07 | 厦门海辰新能源科技有限公司 | Battery cell and battery pack |
| WO2022036836A1 (en) * | 2020-08-19 | 2022-02-24 | 江苏正力新能电池技术有限公司 | Array cell and assembly method therefor |
| WO2022068657A1 (en) * | 2020-09-30 | 2022-04-07 | 星恒电源股份有限公司 | Round lithium battery and preparation method therefor |
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