CN105810875B - Round current collecting plates for lithium ion battery - Google Patents
Round current collecting plates for lithium ion battery Download PDFInfo
- Publication number
- CN105810875B CN105810875B CN201610273335.XA CN201610273335A CN105810875B CN 105810875 B CN105810875 B CN 105810875B CN 201610273335 A CN201610273335 A CN 201610273335A CN 105810875 B CN105810875 B CN 105810875B
- Authority
- CN
- China
- Prior art keywords
- disk body
- current collecting
- urosome
- collecting plates
- area
- 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.)
- Expired - Fee Related
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 9
- 229910000679 solder Inorganic materials 0.000 abstract description 6
- 238000013316 zoning Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 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
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a kind of round current collecting plates for lithium ion battery, including：Disk body, has a first surface towards battery core and the second surface backwards to battery core, and the second surface is equipped with several from disk body center radial equally distributed raised line outward, the fan-shaped afflux area for disk body to be divided into several area equations；And it is arranged on the second surface of the disk body and urosome at any angle can be folded into.Using round current collecting plates provided by the present invention as flow concentrating part, and setting can be with the urosome of water conservancy diversion on it, afflux zoning can be divided into the sector region of area equation by raised line, and by the way of spot welding by the lug of battery core it is even be welded in afflux area, since spot-welded area is big, the contact area of lug and round current collecting plates is big, solder joint being evenly distributed on round current collecting plates, so that lithium ion battery water conservancy diversion uniform in effect, guide performance is very good, can high current work long hours.
Description
Technical field
The present invention relates to a kind of technical field of lithium ion, in particular to a kind of circle for lithium ion battery
Shape current collecting plates.
Background technology
Lithium ion battery in particular by LiFePO4 lithium ion battery as a positive electrode active material have specific power it is high,
The advantages that having extended cycle life, having a safety feature and is pollution-free is to determine that can current electric vehicle, hybrid-electric car quick
The critical product of development.In a series of lithium ion battery products, cylindrical aluminium alloy shell battery is concerned, special
Shape keeps the appearance and size of product highly stable with material, and heavy-current discharge performance is more excellent, security performance higher, shell are anti-
Corrosive nature is obviously improved.
At present for there are many kinds of the manufacturing process of cylindrical aluminium alloy shell battery, but how battery structure is optimized
To improve the problem that properties are always puzzlement people at present.If any the optimal way using multipole ear structure, by adopting
With multipole ear structure, in high-multiplying power discharge, since there are battery core multiple lugs, electron propagation ducts to greatly increase, electric current is close
Degree is reduced, and greatly reduces polarization, can reduce the internal resistance of cell, is improved lithium ion battery discharge performance and security performance, is made it
It is more suitable for applying in terms of the power supplys such as electric vehicle, electronic toy, the model of an airplane and electric tool.But multiple extreme ear structures
Presence, the welding for lug is always problem.
Lithium iron cell current-collector ring is generally applied to high-capacity cylindrical lithium ion cell internal structure design more, such as directly
Diameter 38mm and the above column lithium ion battery, are used for connecting tab and pole, effect be turn-on battery inner pole piece with it is outer
Electric current between portion's pole.Existing lithium iron cell current-collector loop technique shape is mostly round (blocked similar to circular cup cross section is parallel
Lower half portion) with rectangular (similar rectangular paper shell cross section parallel the lower half portion blocked), when lithium ion battery assembles, afflux
Ring is placed at the center of battery core end, and collecting ring edge is fixed on after will be distributed over the lug arrangement of cylindrical battery core end later
Place, then lug and collecting ring are welded as a whole using laser-beam welding machine.Collecting ring bottom uses with pole band one end and welds simultaneously
The mode of connecing connects, and the pole band other end is welded in lithium ion battery pole bottom, passes through the company of lug, collecting ring, pole band and pole
Connect conducting inside lithium ion cell, foreign current.
The above-mentioned description to collecting ring can specifically show that flow concentrating part is the one of round collecting ring as shown in Figure 1, in Fig. 1
Kind situation is provided with water conservancy diversion leader tape b ', then water conservancy diversion leader tape b ' is welded by multiple tab weldings on collecting ring a ' on collecting ring a '
It is connected on negative plate cover board.Which is since high-capacity cylindrical lithium ion cell lug number is more, and a large amount of lugs are nothings
Sequence arrangement, more than ten differ to up to a hundred, and disordered arrangements, random after arrangement to be distributed in collecting ring edge, above-mentioned technology
There are welding sequences it is cumbersome, production efficiency is relatively low, tab welding quality conformance is poor the problems such as.In addition, lug is directly anchored to
Not stable enough on collecting ring, battery causes cell damage under vibration in use, lug is easily torn.And circle collection
Ring is flowed there are a radian, and the soldering tip and pedestal of ultrasonic bonding are required for that the radian of certain radian and collecting ring is arranged
Match, cambered welding manner is big to tip wear, and welding effect is poor, the problems such as easy ting produce rosin joint, desoldering and solder skip.
And the collecting ring of the structure also needs to the materials such as collecting ring accessory and the diversion belt of purchase Specialty Design, increases and is fabricated to
Sheet and fabrication processing.In addition, the afflux ring design of the structure, there are battery design capacity is small, consistency of performance is poor and produces
The defects such as product qualification rate is low then influence the service life of battery pack after battery group.
Patent CN103500844A also discloses a kind of cylindrical flow concentrating part of protrusion, is arranged on cathode cover board
Item cylinder shell extends internally protrusion cylindrical mesa, and multiple lugs overlap in protrusion cylindrical bar.Although should
Mode is using the cylindrical bar of protrusion as diversion component, and lug is welded on a part, and welding procedure is simple, protrusion circle
Cylindricality platform occupies little space, but which has a fixing there are drawback, such as solder joint are bigger to the stability of electric current
It rings.
In addition, traditional battery guiding device is strip of metal, electric current is exported from strip of metal, such water conservancy diversion dress
Setting when mounted must be welded on one rule of strip of metal in battery core, and welding is inconvenient, and the distribution ten of water conservancy diversion point
It is point uneven, it is bad to result in battery guide performance.
Invention content
The purpose of the present invention is intended to provide a kind of round current collecting plates for lithium ion battery, and round current collecting plates is used to make
For current-collecting device, lug is equably welded in fan-shaped afflux area by the way of spot welding, battery core big in spot-welded area
Big with the contact area of round current collecting plates, solder joint is evenly distributed, and has obtained water conservancy diversion uniform in effect, and guide performance is very good and can
The battery that high current works long hours.
To achieve the goals above, according to an aspect of the present invention, the present invention provides one kind being used for lithium ion battery
Round current collecting plates, including：Disk body, has a first surface towards battery core and the second surface backwards to battery core, on second surface
Equipped with several from the outside radial equally distributed raised line in disk body center, for disk body to be divided into several area equations
Fan-shaped afflux area；And
It is arranged on the second surface of disk body and urosome at any angle can be folded into.
Further, raised line is three；The length of raised line is the 1/3~1/4 of disk body diameter；Width is the 1/ of disk body diameter
15~1/18.
Further, position corresponding with raised line is in groove structure on first surface.
Further, the center of the disk body is equipped with through-hole.
Further, the urosome is that the disk body extends integrally formed laminated structure along one side surface direction.
Further, urosome is rectangular sheet structure；And 1/2~1/3 that the width of urosome is disk body diameter.
Further, the second surface of the urosome and the disk body is at 30~45 ° of angles.
Further, the consistency of thickness of the thickness of the urosome and disk body.
Further, the urosome is equipped with fixing threaded hole, for disk body to be fixed；Urosome is detachably connected or welds
It is connected on the second surface of disk body.
Further, the side of disk body is provided with the buckling groove for assembly.
Beneficial effects of the present invention are as follows：
Using round current collecting plates provided by the present invention as flow concentrating part, and be arranged on it can with the urosome of water conservancy diversion,
Afflux zoning can be divided into the sector region of area equation by raised line, and by the way of spot welding by the lug of battery core it is even weld
In afflux area, since spot-welded area is big, the contact area of lug and round current collecting plates is big, and solder joint is on round current collecting plates
Be evenly distributed so that the water conservancy diversion uniform in effect of lithium ion battery, guide performance is very good, can high current work long hours.
Description of the drawings
Fig. 1 is the structural schematic diagram of collecting ring in the prior art；
Fig. 2 is the structural schematic diagram of the round current collecting plates of the present invention.
Specific implementation mode
Technical scheme of the present invention is described in detail below by way of illustrative specific embodiment, is also further illustrated
Beneficial effects of the present invention.But these embodiments should not be construed to limiting the scope of the invention.It is all to be based on the present invention
In the range of the technology that the above is realized is encompassed by the present invention is directed to protect.
As shown in Fig. 2, the round current collecting plates provided by the present invention for lithium ion battery include disk body 210 and setting
On the second surface of disk body 210 and urosome 250 at any angle can be folded into.Wherein, disk body 210 has towards battery core
First surface and the backwards second surface of battery core, it is radial equal outward from 210 center of disk body that second surface is equipped with several
The raised line 230 of even distribution, for disk body 210 to be divided to the fan-shaped afflux area 240 for several area equations.
The material of disk body 210 is generally the material to conduct electricity very well, such as can be copper or aluminum material.
According to the present invention, raised line 230 is preferably three, radial uniformly from the central through hole 220 of disk body 210 to periphery
Ground is distributed on a second surface.The present invention creatively designs three raised lines 230, and the second surface of disk body 210 is equably divided
At the fan-shaped afflux area 240 of three area equations, lug can be made more uniformly to be welded in three afflux areas 240, and
Lug is equably welded in three afflux areas 240 by the way of spot welding, since spot-welded area is big, lug and circle
The contact area of current collecting plates is big, and solder joint is evenly distributed so that the water conservancy diversion uniform in effect of battery, guide performance is very good, so energy
Enough high currents work long hours.
Preferably, the length of raised line 230 is the 1/3~1/4 of 210 diameter of disk body；Width be 210 diameter of disk body 1/15~
1/18.Disk body 210 can be preferably divided into the sector region of several equal areas by the raised line 230 of the size.
According to the present invention, position corresponding with raised line 230 is in groove structure on first surface.
According to the present invention, through-hole 220 is equipped in the center of disk body 210.Through-hole 220 is corresponding with battery core interstitial hole
, it is used as liquid injection hole, also there is hole corresponding thereto on the cover board of battery.
Wherein, urosome 250 preferably can be that disk body 210 extends integrally formed laminated structure along one side surface direction.Into
The preferably rectangular laminated structure of one step.Shown in Figure 2 is urosome 250 and round 210 integrated formed structure of current collecting plates ontology.
In other unshowned embodiments, urosome 250 can also be detachably connected or be welded on the second surface of disk body 210.
Preferably, the consistency of thickness of the thickness of urosome 250 and round current collecting plates 210.Urosome 250 is arranged in round current collecting plates
Water conservancy diversion is used on ontology 210.It is preferred that the width of urosome 250 is the 1/2~1/3 of 210 diameter of disk body, water conservancy diversion effect at this time is most
It is good.Further, it is also possible to which the location hole 260 for being aligned with cover board is arranged on urosome 250, it is fixed usually to be passed through by welding procedure
Urosome 250 is welded on the cover board in position hole 260.
Preferably, the second surface of urosome 250 and disk body 210 is at 30~45 ° of angles.If angle is too big or too small,
The water conservancy diversion effect of urosome 250 will be influenced, and be unfavorable for fixing.
Preferably, in one embodiment, the thickness of urosome 250 can with the consistency of thickness of disk body 210, other implementation
In example, the thickness of urosome 250 can also be the 1/2 of disk body thickness, can save material while ensureing water conservancy diversion effect in this way
Material.
Preferably, urosome 250 is equipped with the location hole 260 for being aligned with cover board, and it is fixed usually to be passed through by welding procedure
Urosome 250 is welded on the cover board in position hole 260.
According to the present invention, the side of disk body 210 is provided with the buckling groove for assembly.By the way that buckling groove is arranged, may make
Disk body 210 is more secured when being assembled with the dead ring being set in outside it, it is not easy to misplace, and easy to assembly.
Claims (7)
1. a kind of round current collecting plates for lithium ion battery, which is characterized in that including：
Disk body (210) has the first surface towards battery core and the second surface backwards to battery core, if the second surface is equipped with
Dry, from the outside radial equally distributed raised line (230) in disk body (210) center, is used to disk body (210) being divided into several
The fan-shaped afflux area (240) of area equation；And
It is arranged on the second surface of the disk body (210) and urosome (250) at any angle can be folded into；
Position corresponding with the raised line (230) is in groove structure on the first surface；
The center of the disk body (210) is equipped with through-hole (220)；
The raised line (230) is three；The length of raised line (230) is the 1/3~1/4 of disk body diameter；Width is disk body diameter
1/15~1/18.
2. circle current collecting plates according to claim 1, which is characterized in that the urosome (250) is the disk body (210) edge
One side surface direction extends integrally formed laminated structure.
3. circle current collecting plates according to claim 2, which is characterized in that the urosome (250) is rectangular sheet structure；And
The width of the urosome (250) is the 1/2~1/3 of the disk body (210) diameter.
4. circle current collecting plates according to claim 1, which is characterized in that the urosome (250) and the disk body (210)
Second surface is at 30~45 ° of angles.
5. circle current collecting plates according to claim 1, which is characterized in that the thickness of the urosome (250) and the disk body
(210) consistency of thickness or for its 1/2.
6. circle current collecting plates according to claim 2, which is characterized in that the urosome (250) is equipped with fixing threaded hole
(260), it is used to that the disk body (210) to be fixed；
The urosome (250) is detachably connected or is welded on the second surface of the disk body (210).
7. circle current collecting plates according to claim 1, which is characterized in that the side of the disk body (210), which is provided with, to be used for
The buckling groove of assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273335.XA CN105810875B (en) | 2016-04-27 | 2016-04-27 | Round current collecting plates for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273335.XA CN105810875B (en) | 2016-04-27 | 2016-04-27 | Round current collecting plates for lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105810875A CN105810875A (en) | 2016-07-27 |
| CN105810875B true CN105810875B (en) | 2018-08-17 |
Family
ID=56458970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610273335.XA Expired - Fee Related CN105810875B (en) | 2016-04-27 | 2016-04-27 | Round current collecting plates for lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105810875B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410102B (en) * | 2016-11-09 | 2023-06-27 | 浙江兴海能源科技有限公司 | Circular positive electrode confluence disc with four-section semicircular lugs and connecting method thereof |
| CN109360932B (en) * | 2018-11-19 | 2022-06-14 | 上海电气国轩新能源科技(苏州)有限公司 | A current collection dish for cylinder omnipolar ear lithium ion battery |
| CN110676478B (en) * | 2019-10-14 | 2021-01-19 | 上海氢润新能源科技有限公司 | Collector plate for hydrogen fuel cell stack |
| CN111312977A (en) * | 2019-12-25 | 2020-06-19 | 无锡市明杨新能源有限公司 | A kind of positive electrode of high rate lithium ion battery and preparation method thereof |
| CN115084736A (en) * | 2021-03-15 | 2022-09-20 | 河南鑫泉能源科技有限公司 | Battery with a battery cell |
| CN219350420U (en) * | 2021-10-22 | 2023-07-14 | 株式会社Lg新能源 | Cylindrical battery, battery pack including the same, and automobile |
| CN115425365B (en) * | 2022-09-29 | 2023-09-26 | 厦门海辰储能科技股份有限公司 | Current collecting components, batteries, battery packs and electrical equipment |
| CN116315481B (en) * | 2023-04-28 | 2025-07-25 | 厦门海辰储能科技股份有限公司 | Energy storage devices and electrical equipment |
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| CN1622364A (en) * | 2003-11-28 | 2005-06-01 | 松下电器产业株式会社 | Prismatic battery and manufacturing method thereof |
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| CN203325979U (en) * | 2013-06-14 | 2013-12-04 | 安徽江淮汽车股份有限公司 | Battery module structure |
| CN205583028U (en) * | 2016-04-27 | 2016-09-14 | 浙江谷神能源科技股份有限公司 | A circular current collector plate for lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009289672A (en) * | 2008-05-30 | 2009-12-10 | Hitachi Vehicle Energy Ltd | Wound type power storage device |
| JP5383154B2 (en) * | 2008-10-31 | 2014-01-08 | 三洋電機株式会社 | Cylindrical secondary battery |
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2016
- 2016-04-27 CN CN201610273335.XA patent/CN105810875B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1622364A (en) * | 2003-11-28 | 2005-06-01 | 松下电器产业株式会社 | Prismatic battery and manufacturing method thereof |
| CN101814620A (en) * | 2009-02-25 | 2010-08-25 | Sb锂摩托有限公司 | Battery |
| CN203325979U (en) * | 2013-06-14 | 2013-12-04 | 安徽江淮汽车股份有限公司 | Battery module structure |
| CN205583028U (en) * | 2016-04-27 | 2016-09-14 | 浙江谷神能源科技股份有限公司 | A circular current collector plate for lithium ion battery |
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| Publication number | Publication date |
|---|---|
| CN105810875A (en) | 2016-07-27 |
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Granted publication date: 20180817 |