CN103730624A - End surface welding current collector of lithium battery - Google Patents
End surface welding current collector of lithium battery Download PDFInfo
- Publication number
- CN103730624A CN103730624A CN201310702274.0A CN201310702274A CN103730624A CN 103730624 A CN103730624 A CN 103730624A CN 201310702274 A CN201310702274 A CN 201310702274A CN 103730624 A CN103730624 A CN 103730624A
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- CN
- China
- Prior art keywords
- flow guiding
- guiding disc
- battery
- lithium battery
- current collector
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- 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.)
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Classifications
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention belongs to the technical field of electric power storage equipment, and discloses a component structure of a lithium battery, in particular to an end surface welding current collector of a lithium battery. The current collector comprises a current conduction disc, wherein a center hole is formed in the current conduction disc; more than three welding grooves distributed at equal intervals are radially formed in the surface of the current conduction disc and equally divide the surface of the current conduction disc into more than three quadrants; a conductive pole tab is arranged in one quadrant and integrally connected with the current conduction disc; and liquid guide holes are formed in the rest quadrants. The end surface welding current collector has the advantages that the brand-new end surface welding current collector of the lithium battery is simple in manufacturing technology, has a good current collecting effect during use, greatly reduces ohmic resistance of the battery, greatly improves performances of the lithium battery, and contributes to automatic production of assembly of the high-power and ultrahigh-volume cylindrical lithium power battery at the same time.
Description
Technical field
The present invention relates to a kind of modular construction of lithium electricity, specifically a kind of lithium electricity end face weldering collector, belongs to electric energy storage device technical field.
Background technology
Along with economic and social development, battery particularly lithium battery all just at high speed development.Lithium battery, due to its high-energy-density, long-life, environmental protection, is more and more subject to people's attention, and lithium electricity battery will have a extensive future aspect electric vehicle power sources and accumulation power supply.Insider generally believes: the battery of low capacity adopts column type explained hereafter, and the battery of high power capacity adopts square laminate patch explained hereafter.Key issue is also in afflux problem in fact.Because what the pole piece positive and negative electrode skeleton of lithium battery adopted respectively is very thin Copper Foil and aluminium foil, cannot directly adopt end face weldering.So up to the present, general cylindrical lithium battery all adopts monopole ear afflux, and the lithium battery of power type adopts multi pole ears afflux., there is square laminated type technique in the lithium dynamical battery of high power, ultra-high capacity afterwards.
Although adopt roll welding lug to solve some problems, positive and negative electrode very Multilayer pole ear is more difficult.When prior art is assembled, not only efficiency is low, and battery quality is not high yet.End face welding technology also has application on the motive-power battery such as SC on Ni-MH battery, nickel-cadmium cell, but its end face weldering collector is to have burr in one side, when end face welds, these burrs can insert respectively in battery core both positive and negative polarity edge, and also will weld the preceding paragraph lug on plus plate current-collecting body.Very thin Copper Foil and aluminium foil that the pole piece positive and negative electrode skeleton of lithium battery adopts respectively, cannot be used alkaline battery end face weldering collector.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of lithium electricity end face weldering collector is provided, adopt the pole piece positive and negative electrode skeleton of the lithium battery of this collector directly to carry out end face weldering, be applicable to large capacity, high-power cylinder type lithium battery, its technical scheme adopting is as follows:
A kind of lithium electricity end face weldering collector, comprise flow guiding disc, on flow guiding disc, offer centre bore, three welding grooves of arranging with equal intervals that flow guiding disc radial surface is provided with, welding groove is divided into three above quadrants by flow guiding disc surface, in one of them quadrant, be provided with conduction lug, conduction lug is connected with flow guiding disc one, in all the other quadrants, offers delivery hole.
Described flow guiding disc radial surface is provided with four welding grooves of equidistantly arranging, described welding groove is divided into four quadrants by flow guiding disc surface, in one of them quadrant, be provided with conduction lug, described conduction lug is connected with flow guiding disc one, in its excess-three quadrant, offers delivery hole.
Described delivery hole is isosceles right triangle shape, and leg-of-mutton right angle fixed point is pointed to flow guiding disc center.
The rectangular shape of described conduction lug, the edge of flow guiding disc is stretched out in conduction lug outside.
The invention has the advantages that:
The invention provides a kind of brand-new lithium electricity end face weldering collector, this product manufacture is simple, in use, catchment effect is good, greatly reduce the Ohmic resistance of battery, the performance of lithium battery is largely increased, and the present invention simultaneously also contributes to the automated production of high power, the assembling of ultra-high capacity cylinder lithium dynamical battery.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the end view of the flow guiding disc in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, lithium electricity end face weldering collector of the present invention is described in further detail.
As shown in Figure 1, the present invention is a kind of lithium electricity end face weldering collector, comprise flow guiding disc 5, on described flow guiding disc 5, offer centre bore 3, flow guiding disc 5 radial surfaces are provided with four welding grooves 2, and described welding groove 2 is divided into four quadrants by flow guiding disc 5 surfaces, are provided with conduction lug 1 in one of them quadrant, described conduction lug 1 is connected with flow guiding disc 5 one, in its excess-three quadrant, offers delivery hole 4.
Described delivery hole 4 is isosceles right triangle shape, and leg-of-mutton right angle fixed point is pointed to flow guiding disc 5 centers.
The rectangular shape of described conduction lug 1, the edge of flow guiding disc 5 is stretched out in conduction lug 1 outside.
The course of work of the present invention is as follows: the lug 1 that will conduct electricity is connected with battery cap welding, welding groove 2 and the welding of lithium battery positive and negative electrode planar laser, in welding process, need to guarantee the coiling pin hole of centre bore 3 aligning battery cores simultaneously, as liquid injection hole, use, guarantee carrying out smoothly of fluid injection process, if there is electric liquid can infiltrate in battery core by delivery hole 4 on collector simultaneously, fluid injection is helped out, flow guiding disc 5 is covered in battery core end face comprehensively, so that High-current output.
The invention provides a kind of brand-new lithium electricity end face weldering collector, this product manufacture is simple, in use, catchment effect is good, greatly reduce the Ohmic resistance of battery, the performance of lithium battery is largely increased, and the present invention simultaneously also contributes to the automated production of high power, the assembling of ultra-high capacity cylinder lithium dynamical battery.
Claims (4)
1. a lithium electricity end face welds collector, it is characterized in that: comprise flow guiding disc (5), on described flow guiding disc (5), offer centre bore (3), three welding grooves (2) of arranging with equal intervals that flow guiding disc (5) radial surface is provided with, described welding groove (2) is divided into three above quadrants by flow guiding disc (5) surface, in one of them quadrant, be provided with conduction lug (1), described conduction lug (1) is connected with flow guiding disc (5) one, offers delivery hole (4) in all the other quadrants.
2. according to lithium electricity end face weldering collector claimed in claim 1, it is characterized in that: described flow guiding disc (5) radial surface is provided with four welding grooves (2), described welding groove (2) is divided into four quadrants by flow guiding disc (5) surface, in one of them quadrant, be provided with conduction lug (1), described conduction lug (1) is connected with flow guiding disc (5) one, offers delivery hole (4) in its excess-three quadrant.
3. according to lithium electricity end face weldering collector claimed in claim 1, it is characterized in that: described delivery hole (4) is isosceles right triangle shape, and leg-of-mutton right angle fixed point is pointed to flow guiding disc (5) center.
4. according to lithium electricity end face weldering collector claimed in claim 1, it is characterized in that: the rectangular shape of described conduction lug (1), the edge of flow guiding disc (5) is stretched out in conduction lug (1) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310702274.0A CN103730624A (en) | 2013-12-19 | 2013-12-19 | End surface welding current collector of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310702274.0A CN103730624A (en) | 2013-12-19 | 2013-12-19 | End surface welding current collector of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103730624A true CN103730624A (en) | 2014-04-16 |
Family
ID=50454619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310702274.0A Pending CN103730624A (en) | 2013-12-19 | 2013-12-19 | End surface welding current collector of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103730624A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218208A (en) * | 2014-07-31 | 2014-12-17 | 中天储能科技有限公司 | Full-lug current collecting disk |
| CN109088037A (en) * | 2018-06-22 | 2018-12-25 | 合肥国轩高科动力能源有限公司 | Current collecting plate welding structure for cylindrical battery |
| CN112909445A (en) * | 2021-01-26 | 2021-06-04 | 苏州宇量电池有限公司 | Single-head bipolar multi-tab cylindrical lithium ion battery |
| CN112928401A (en) * | 2021-01-26 | 2021-06-08 | 苏州宇量电池有限公司 | Multi-tab cylindrical lithium ion battery |
| WO2023065185A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, fabrication method therefor and fabrication device thereof, battery, and electrical apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1841821A (en) * | 2005-03-30 | 2006-10-04 | 三洋电机株式会社 | Battery |
| JP2007265846A (en) * | 2006-03-29 | 2007-10-11 | Sanyo Electric Co Ltd | Cylindrical battery and its manufacturing method |
| CN203746958U (en) * | 2013-12-19 | 2014-07-30 | 周培荣 | Lithium battery end face welded current collector |
-
2013
- 2013-12-19 CN CN201310702274.0A patent/CN103730624A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1841821A (en) * | 2005-03-30 | 2006-10-04 | 三洋电机株式会社 | Battery |
| JP2007265846A (en) * | 2006-03-29 | 2007-10-11 | Sanyo Electric Co Ltd | Cylindrical battery and its manufacturing method |
| CN203746958U (en) * | 2013-12-19 | 2014-07-30 | 周培荣 | Lithium battery end face welded current collector |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218208A (en) * | 2014-07-31 | 2014-12-17 | 中天储能科技有限公司 | Full-lug current collecting disk |
| CN104218208B (en) * | 2014-07-31 | 2016-06-29 | 中天储能科技有限公司 | A kind of full lug current collecting plates |
| CN109088037A (en) * | 2018-06-22 | 2018-12-25 | 合肥国轩高科动力能源有限公司 | Current collecting plate welding structure for cylindrical battery |
| CN112909445A (en) * | 2021-01-26 | 2021-06-04 | 苏州宇量电池有限公司 | Single-head bipolar multi-tab cylindrical lithium ion battery |
| CN112928401A (en) * | 2021-01-26 | 2021-06-08 | 苏州宇量电池有限公司 | Multi-tab cylindrical lithium ion battery |
| WO2023065185A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, fabrication method therefor and fabrication device thereof, battery, and electrical apparatus |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140416 |