CN105810875A - Round current collecting plate used for lithium ion battery - Google Patents
Round current collecting plate used for lithium ion battery Download PDFInfo
- Publication number
- CN105810875A CN105810875A CN201610273335.XA CN201610273335A CN105810875A CN 105810875 A CN105810875 A CN 105810875A CN 201610273335 A CN201610273335 A CN 201610273335A CN 105810875 A CN105810875 A CN 105810875A
- Authority
- CN
- China
- Prior art keywords
- current collecting
- disk body
- urosome
- collecting plates
- circular current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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 round current collecting plate used for a lithium ion battery. The round current collecting plate comprises a plate body and a tail body, wherein the plate body is provided with a first surface which faces a battery core and a second surface which is back to the battery core; a plurality of convex strips which are radially and uniformly distributed outwards from the center of the plate body and are used for dividing the plate body into a plurality of fan-shaped current collecting areas with the same area are arranged on the second surface; and the tail body is arranged on the second surface of the plate body and can be folded to any angle. The round current collecting plate provided by the invention is taken as a current collecting component and the tail body used for current guidance is arranged on the round current collecting plate, the convex strips can divide the current collecting area into the fan-shaped current collecting areas with the same area, and tabs of the electric core are uniformly welded in the current collecting areas through a way of spot welding; owing to the large spot welding area, the contact area of the tabs and the round current collecting plate is large, the welding spots are uniformly distributed on the round current collecting plate, so that the current guidance effect of the lithium ion battery is uniform, the current guidance performance is very good, and the lithium ion battery can work at large current for a long time.
Description
Technical field
The present invention relates to a kind of technical field of lithium ion, in particular to a kind of circular current collecting plates for lithium ion battery.
Background technology
The advantages such as lithium ion battery has specific power height in particular by LiFePO4 as the lithium ion battery of positive active material, has extended cycle life, security performance is good and pollution-free, are determine the critical product that can current electric automobile, hybrid-electric car fast-developing.In a series of lithium ion battery products, cylindrical aluminium alloy shell battery receives much concern, and its special profile and material make the overall dimensions of product highly stable, and heavy-current discharge performance is more excellent, security performance is higher, shell Corrosion Protection is obviously improved.
Manufacturing process for cylindrical aluminium alloy shell battery has a variety of at present, but how battery structure is optimized improve properties and be always up perplexing at present the difficult problem of people.If any adopt multi pole ears structure optimal way, by adopting multi pole ears structure, when high-multiplying power discharge, owing to battery core has multiple lug, electron propagation ducts is greatly increased, and electric current density reduces, greatly reduce polarization, the internal resistance of cell can be reduced, improve lithium ion battery discharge performance and security performance so that it is be more suitable for being applied in the power supply aspects such as electric automobile, electronic toy, the model of an airplane and electric tool.But the existence of multiple extreme ear structures, the welding for lug is always up a difficult problem.
Lithium iron cell current-collector ring generally more is applied to high-capacity cylindrical lithium ion cell internal structure design, such as diameter 38mm and above column lithium ion battery, and for connecting tab and pole, its effect is turn-on battery inner pole piece and outside pole intercolumniation electric current.Existing lithium iron cell current-collector loop technique shape mostly is circular (the parallel the latter half blocked of similar circular cup cross section) and square (similar square shape paper shell cross section parallel the latter half blocked), when lithium ion battery assembles, collecting ring is placed on center, battery core end, will be distributed over being fixed on after the lug of cylindrical battery core end arranges collecting ring edge afterwards, then adopt laser-beam welding machine lug and collecting ring to be welded as a whole.Adopting welding manner to be connected with band one end, pole bottom collecting ring, the pole band other end is welded in bottom lithium ion battery pole simultaneously, turns on inside lithium ion cell, foreign current by the connection of lug, collecting ring, pole band and pole.
The above-mentioned description to collecting ring specifically can be as shown in Figure 1, Fig. 1 has illustrated a kind of situation that flow concentrating part is circular collecting ring, by multiple tab weldings on collecting ring a ', collecting ring a ' is provided with water conservancy diversion leader tape b ', then water conservancy diversion leader tape b ' is welded on negative plate cover plate.Which is more due to high-capacity cylindrical lithium ion cell lug number, and lug is unordered arrangement in a large number, tens to up to a hundred not etc., and disordered arrangements, the random collecting ring edge that is distributed in after arrangement, there is the problems such as welding sequence is loaded down with trivial details, production efficiency is relatively low, tab welding quality conformance difference in above-mentioned technology.It addition, lug is directly anchored on collecting ring, stable not, when battery uses under vibration, lug is easily torn, and causes cell damage.And there is a radian in circular collecting ring, the soldering tip of ultrasonic bonding and base are required for arranging certain radian and mate with the radian of collecting ring, the welding manner having radian is big to tip wear, and welding effect is poor, it is easy to produce the problems such as rosin joint, sealing-off and solder skip.And the collecting ring of this structure also needs to the materials such as collecting ring accessory and the diversion belt of purchase Specialty Design, adds cost of manufacture and fabrication processing.Additionally, the collecting ring design of this structure defects such as to there is battery design capacity little, and consistency of performance is poor and conforming product rate is low, then affect the life-span of battery set of cells afterwards in groups.
Patent CN103500844A also discloses the cylindrical flow concentrating part of a kind of protrusion, and it is the protrusion cylindrical mesa extended inside setting option cylinder shell on negative pole cover plate, and multiple lugs overlap and protruding in cylindrical bar.Although which adopts the cylindrical bar protruded as diversion component, lug is all welded on a part, and welding procedure is simple, protrude cylindrical bar and take up room little, but which exists drawback, such as solder joint is relatively larger, and the stability of electric current is had certain impact.
It addition, traditional battery guiding device is strip of metal, electric current is derived from strip of metal, strip of metal one rule must be welded in battery core by this type of guiding device when mounted, weld inconvenient, and the distribution of water conservancy diversion point is very uneven, result in battery guide performance not good.
Summary of the invention
The purpose of the present invention aims to provide a kind of circular current collecting plates for lithium ion battery, it adopts circular current collecting plates as current-collecting device, lug is welded in fan-shaped afflux district by mode equably that adopt spot welding, big in spot-welded area, battery core is big with the contact area of circular current collecting plates, solder joint is evenly distributed, and obtains water conservancy diversion uniform in effect, and guide performance is very good and can electric current works long hours greatly battery.
To achieve these goals, according to an aspect of the present invention, the invention provides a kind of circular current collecting plates for lithium ion battery, including: disk body, there is the second surface of the first surface towards battery core and battery core dorsad, second surface be provided with several from disk body center outside radially equally distributed raised line, for disk body being divided into the fan-shaped afflux district of several area equation；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 1/15～1/18 of disk body diameter.
Further, corresponding with raised line on first surface position is groove structure.
Further, the center of described disk body is provided with through hole.
Further, described urosome is that described disk body extends integrated laminated structure along one side surface direction.
Further, urosome is rectangular sheet structure；And the width of urosome is disk body diameter 1/2～1/3.
Further, described urosome becomes 30～45 ° of angles with the second surface of described disk body.
Further, the consistency of thickness of the thickness of described urosome and disk body.
Further, described urosome is provided with fixing threaded hole, for disk body is fixed；Urosome removably connects or is welded on the described second surface of disk body.
Further, all sides of disk body are provided with the buckling groove for assembling.
Beneficial effects of the present invention is as follows:
Adopt circular current collecting plates provided by the present invention as flow concentrating part, and arrange thereon can the urosome of water conservancy diversion, afflux zoning can be divided into the sector region of area equation by raised line, and adopt the mode of spot welding to be welded in afflux district by even for the lug of battery core, owing to spot-welded area is big, lug is big with the contact area of circular current collecting plates, solder joint being evenly distributed on circular current collecting plates, making the water conservancy diversion uniform in effect of lithium ion battery, guide performance is very good, it is possible to big electric current works long hours.
Accompanying drawing explanation
Fig. 1 is the structural representation of collecting ring of the prior art；
Fig. 2 is the structural representation of the circular current collecting plates of the present invention.
Detailed description of the invention
Below by way of exemplary specific embodiment, technical scheme is described in detail, also further illustrates beneficial effects of the present invention.But these embodiments should be construed to limiting the scope of the invention.All technology realized based on foregoing of the present invention are encompassed by it is contemplated that in the scope protected.
As in figure 2 it is shown, the circular current collecting plates for lithium ion battery provided by the present invention includes disk body 210 and is arranged on the second surface of disk body 210 and can be folded into urosome 250 at any angle.Wherein, disk body 210 has the second surface of the first surface towards battery core and battery core dorsad, second surface be provided with several from disk body 210 center outside radially equally distributed raised line 230, for disk body 210 being divided into the fan-shaped afflux district 240 of several area equation.
The material of disk body 210 is generally the material conducted electricity very well, for instance can be copper or aluminum material.
According to the present invention, raised line 230 is preferably three, is radially evenly distributed on second surface to periphery from the central through hole 220 of disk body 210.The present invention creatively designs three raised lines 230, the second surface of disk body 210 is divided evenly into the fan-shaped afflux district 240 of three area equation, can so that lug be more uniformly welded in three afflux districts 240, and adopt the mode of spot welding to be welded on by lug in three afflux districts 240 equably, owing to spot-welded area is big, lug is big with the contact area of circular current collecting plates, solder joint is evenly distributed, make the water conservancy diversion uniform in effect of battery, guide performance is very good, it is possible to big electric current works long hours.
Preferably, the length of raised line 230 is the 1/3～1/4 of disk body 210 diameter；Width is the 1/15～1/18 of disk body 210 diameter.Disk body 210 can be divided into the sector region of several equal areas by the raised line 230 of this size better.
According to the present invention, position corresponding with raised line 230 on first surface is groove structure.
According to the present invention, it is provided with through hole 220 in the center of disk body 210.Through hole 220 is corresponding with battery core interstitial hole, and it is used as liquid injection hole, and the cover plate of battery also has hole corresponding thereto.
Wherein, urosome 250 can be preferably that disk body 210 extends integrated laminated structure along one side surface direction.More preferably rectangular sheet structure.Shown in Fig. 2 is urosome 250 and circular current collecting plates body 210 integrated formed structure.In other unshowned embodiment, urosome 250 can also removably connect or be welded on the second surface of disk body 210.
Preferably, the consistency of thickness of the thickness of urosome 250 and circular current collecting plates 210.Urosome 250 is arranged on circular current collecting plates body 210 for water conservancy diversion.The width of preferred urosome 250 is the 1/2～1/3 of disk body 210 diameter, and water conservancy diversion effect now is best.Further, it is also possible to be arranged to the hole, location 260 with cover plate para-position on urosome 250, urosome 250 is welded on the cover board by positioning hole 260 usually by welding procedure.
Preferably, urosome 250 becomes 30～45 ° of angles with the second surface of disk body 210.If angle is too big or too little, all can affect the water conservancy diversion effect of urosome 250, and be unfavorable for fixing.
Preferably, in one embodiment, the thickness of urosome 250 can with the consistency of thickness of disk body 210, and in other embodiments, the thickness of urosome 250 can also is that the 1/2 of disk body thickness, so while ensureing water conservancy diversion effect, can save material.
Preferably, urosome 250 is provided with for the hole, location 260 with cover plate para-position, is welded on the cover board by urosome 250 by positioning hole 260 usually by welding procedure.
According to the present invention, all sides of disk body 210 are provided with the buckling groove for assembling.By arranging buckling groove, disk body 210 can be made more firm when the dead ring outside with being set in it assembles, it is not easy to dislocation, and easy to assembly.
Claims (10)
1. the circular current collecting plates for lithium ion battery, it is characterised in that including:
Disk body (210), there is the second surface of the first surface towards battery core and battery core dorsad, described second surface be provided with several from disk body (210) center outside radially equally distributed raised line (230), for disk body (210) being divided into the fan-shaped afflux district (240) of several area equation；And
It is arranged on the second surface of described disk body (210) and urosome (250) at any angle can be folded into.
2. circular current collecting plates according to claim 1, it is characterised in that preferably, described raised line (230) is three；Length is disk body diameter the 1/3～1/4 of raised line (230)；Width is the 1/15～1/18 of disk body diameter.
3. circular current collecting plates according to claim 1 and 2, it is characterised in that position corresponding with described raised line (230) on described first surface is groove structure.
4. the circular current collecting plates according to any one of claim 1-3, it is characterised in that the center of described disk body (210) is provided with through hole (220).
5. circular current collecting plates according to claim 1, it is characterised in that described urosome (250) extends integrated laminated structure for described disk body (210) along one side surface direction.
6. circular current collecting plates according to claim 5, it is characterised in that described urosome (250) is rectangular sheet structure；And width is described disk body (210) diameter the 1/2～1/3 of described urosome (250).
7. circular current collecting plates according to claim 1, it is characterised in that described urosome (250) becomes 30～45 ° of angles with the second surface of described disk body (210).
8. circular current collecting plates according to claim 1, it is characterised in that the consistency of thickness of the thickness of described urosome (250) and described disk body (210) or be its 1/2.
9. circular current collecting plates according to claim 5, it is characterised in that described urosome (250) is provided with fixing threaded hole (260), for described disk body (210) is fixed；
Described urosome (250) removably connects or is welded on the described second surface of described disk body (210).
10. circular current collecting plates according to claim 1, it is characterised in that all sides of described disk body (210) are provided with the buckling groove for assembling.
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 true CN105810875A (en) | 2016-07-27 |
| CN105810875B 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410102A (en) * | 2016-11-09 | 2017-02-15 | 浙江兴海能源科技股份有限公司 | Circular anode bus disc with four semicircular tabs and connecting method of circular anode bus disc with four-segment semicircular tabs |
| CN109360932A (en) * | 2018-11-19 | 2019-02-19 | 国轩新能源（苏州）有限公司 | A kind of current collecting plates for the full tab lithium ion battery of cylinder |
| CN110676478A (en) * | 2019-10-14 | 2020-01-10 | 上海氢润新能源科技有限公司 | Collector plate for hydrogen fuel cell stack |
| CN115425365A (en) * | 2022-09-29 | 2022-12-02 | 厦门海辰储能科技股份有限公司 | Current collecting assembly, battery pack and electric equipment |
Citations (6)
| 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 |
| JP2009289672A (en) * | 2008-05-30 | 2009-12-10 | Hitachi Vehicle Energy Ltd | Wound type power storage device |
| JP2010108847A (en) * | 2008-10-31 | 2010-05-13 | Sanyo Electric Co Ltd | Cylindrical-type secondary battery |
| 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 |
-
2016
- 2016-04-27 CN CN201610273335.XA patent/CN105810875B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| JP2009289672A (en) * | 2008-05-30 | 2009-12-10 | Hitachi Vehicle Energy Ltd | Wound type power storage device |
| JP2010108847A (en) * | 2008-10-31 | 2010-05-13 | Sanyo Electric Co Ltd | Cylindrical-type secondary battery |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410102A (en) * | 2016-11-09 | 2017-02-15 | 浙江兴海能源科技股份有限公司 | Circular anode bus disc with four semicircular tabs and connecting method of circular anode bus disc with four-segment semicircular tabs |
| CN109360932A (en) * | 2018-11-19 | 2019-02-19 | 国轩新能源（苏州）有限公司 | A kind of current collecting plates for the full tab lithium ion battery of cylinder |
| CN110676478A (en) * | 2019-10-14 | 2020-01-10 | 上海氢润新能源科技有限公司 | Collector plate for hydrogen fuel cell stack |
| 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 |
| CN115425365A (en) * | 2022-09-29 | 2022-12-02 | 厦门海辰储能科技股份有限公司 | Current collecting assembly, battery pack and electric equipment |
| CN115425365B (en) * | 2022-09-29 | 2023-09-26 | 厦门海辰储能科技股份有限公司 | Current collecting assembly, battery pack and electric equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105810875B (en) | 2018-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110600795B (en) | Lithium ion cylindrical battery and processing method thereof | |
| CN111668451B (en) | Preparation method of pole piece for winding type multi-pole lug battery cell, pole piece and battery cell | |
| CN207320232U (en) | A kind of lithium ion battery negative electrode and lithium ion battery | |
| CN214589165U (en) | Battery cell and battery | |
| CN101640286B (en) | Core of spirally wound lithium battery and spirally wound lithium battery | |
| CN105810875A (en) | Round current collecting plate used for lithium ion battery | |
| CN205583028U (en) | A circular current collector plate for lithium ion battery | |
| CN202662698U (en) | Cylindrical lithium ion battery | |
| CN105070880A (en) | Pole plates with auxiliary tabs and lithium-ion battery of pole plates with auxiliary tabs | |
| WO2023103993A1 (en) | Electrode sheet and battery | |
| WO2023103994A1 (en) | Electrode plate and battery | |
| CN103500844B (en) | cylindrical multi-lug lithium ion battery and preparation method thereof | |
| CN207719304U (en) | A kind of the multi pole ears core and cylindrical battery of cylindrical battery | |
| CN103531848A (en) | Overlapping winding preparation method of lithium ion secondary battery | |
| CN109599597A (en) | A kind of high current battery core and the power battery comprising the battery core | |
| CN103219524B (en) | A kind of laminated lithium ion battery plus plate current-collecting body paillon foil, anode pole piece and battery | |
| WO2009133652A1 (en) | Cylindrical battery and manufacturing method thereof | |
| CN102024990A (en) | Method for manufacturing cells of power lithium ion batteries | |
| JPWO2011080988A1 (en) | Electricity storage device | |
| CN207474594U (en) | A kind of lithium ion cylinder battery | |
| CN217655973U (en) | Battery cover plate, battery and electric equipment | |
| CN217848122U (en) | Positive plate cover plate assembly for cylindrical battery, cylindrical battery and electric equipment with same | |
| CN207676990U (en) | The bindiny mechanism of a kind of collector and pole and the battery with the bindiny mechanism | |
| CN202503077U (en) | Battery core of orthohexagonal lithium ion battery | |
| CN215644569U (en) | Current collector structure for winding type multi-tab battery cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 |