CN109888164A - A kind of battery pole ear with insulating layer - Google Patents
A kind of battery pole ear with insulating layer Download PDFInfo
- Publication number
- CN109888164A CN109888164A CN201910305294.1A CN201910305294A CN109888164A CN 109888164 A CN109888164 A CN 109888164A CN 201910305294 A CN201910305294 A CN 201910305294A CN 109888164 A CN109888164 A CN 109888164A
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- CN
- China
- Prior art keywords
- battery
- tab
- insulating layer
- ear
- welding
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 37
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000002033 PVDF binder Substances 0.000 claims abstract description 7
- -1 polypropylene Polymers 0.000 claims abstract description 7
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 7
- 239000004743 Polypropylene Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims abstract description 5
- 238000005097 cold rolling Methods 0.000 claims abstract description 5
- 239000004793 Polystyrene Substances 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 238000007750 plasma spraying Methods 0.000 claims abstract description 4
- 229920001155 polypropylene Polymers 0.000 claims abstract description 4
- 229920002223 polystyrene Polymers 0.000 claims abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 4
- 238000007740 vapor deposition Methods 0.000 claims abstract description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 11
- 239000003792 electrolyte Substances 0.000 description 10
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000840 electrochemical analysis Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
- Connection Of Batteries Or Terminals (AREA)
Abstract
A kind of battery pole ear with insulating layer, belongs to battery technology field.The purpose of the present invention is to solve safety existing for existing battery structure and waste problem, a kind of battery pole ear with insulating layer, including anode ear and negative electrode lug, the anode ear and negative electrode lug is made of welding ends with end is leant out, it is characterised in that: the welding end surfaces cover one layer of megohmite insulant.The method of the covering is one of coating, cold rolling, high-temperature plasma spraying, pressing or vapor deposition.The megohmite insulant is one of aluminium oxide, polypropylene, PVDF, ceramics, polystyrene, polyvinyl chloride or ABS.The invention has the advantages that when tab of the invention is used on battery, gummed paper can not only be saved, realize the promotion of economic benefit, it also can be reduced processing procedure process, improve process efficiency, it saves human and material resources, it is important that battery security can also be improved, this invention has important practical significance for battery industry.
Description
Technical field
The invention belongs to battery technology fields, and in particular to a kind of battery pole ear with insulating layer.
Background technique
In recent years, battery has obtained extensive concern and the active support of the government of people, battery as new green energy
Have become essential a part in people's life, so, development and improvement and the people's lives breath of battery technology cease
It is related.
Commercial Li-ion batteries mainly include four parts at present: anode, cathode, diaphragm, electrolyte, remaining auxiliary material includes pole
Ear, positive and negative collector, gummed paper etc., wherein ear of the tab as battery, main function are to play the role of guiding electric current, glue
Paper mainly play insulating effect, the welding ends being attached at pole piece head and tab, prevent pad burr pierce through every
Film causes short circuit, but gummed paper much can all be detached from the position pasted originally under the immersion of electrolyte at present, cause safety hidden
Suffer from, the security performance of battery is related to the personal safety of people, therefore is that battery practitioner has to one paying attention to and facing
Significant problem.
The reason of causing cell safety problem has very much, but the immediate cause of nearly all safety problem is all that thermal runaway is drawn
The burning of electricity pond, most important one kind is exactly that short circuit occurs for battery in these reasons, and experiment shows: many battery furnace temperature are surveyed
Trying heated easily shrink of the diaphragm covered at the empty foil that intransitable main cause is battery pole piece head causes battery short
Road, and then cause cells burst.Furnace temperature test is that current battery industry has to the security test for carrying out and passing through, solution
Certainly or the safety issue of improvement battery from electrode material, electrolyte composition etc. other than setting about, extreme ear structure and shape
Design and to improve be also very important one aspect, some researches show that when charge and discharge, temperature is highest at tab
, it also means that thermal runaway is easiest to be caused by tab, is based on this, the present invention devises a kind of pole with insulating layer
Ear.
Summary of the invention
The purpose of the present invention is to solve safety existing for existing battery structure and waste problem, provide a kind of with exhausted
The battery pole ear of edge layer, this kind of tab can both save gummed paper, reduce processing procedure process, and can improve safety problem, and real
Existing mode is simple, and mainly by coating or pressing the unwelded face of tab, in cold rolling, one layer of insulating materials is realized, by tab knot
Structure is designed as size two parts, can solve battery furnace temperature test and safety issue, wherein welding portion area compared with
Greatly, it is close or identical with normal tab to lean out part.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of battery pole ear with insulating layer, including anode ear and negative electrode lug, the anode ear and negative electrode lug are by welding
End composition is held and leans out, the welding end surfaces cover one layer of megohmite insulant.
Further, the method for the covering is one in coating, cold rolling, high-temperature plasma spraying, pressing or vapor deposition
Kind.
Further, the megohmite insulant be aluminium oxide, polypropylene, PVDF, ceramics, polystyrene, polyvinyl chloride or
One of ABS.
The beneficial effect of the present invention compared with the existing technology is:, not only can be with when tab of the invention is used on battery
Gummed paper is saved, realizes the promotion of economic benefit, moreover it is possible to processing procedure process is reduced, process efficiency is improved, saves human and material resources, it is important
It is that can also improve battery security, this invention has important practical significance for battery industry.
Detailed description of the invention
Fig. 1 is the battery pole ear schematic diagram with insulating layer；
Fig. 2 is that the heterodoxy with insulating layer draws battery pole ear schematic diagram；
Wherein, the positive and negative tab of 1- pad, 2- gel, 3- pole piece, 4- welding ends, 5- anode ear, 6- negative electrode lug, 7- merge,
8- battery core, 9- lean out end.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawings and examples, and however, it is not limited to this,
All to be modified to technical solution of the present invention or equivalent replacement, range without departing from the spirit of the technical scheme of the invention should all
Cover within the protection scope of the present invention.
Specific embodiment 1: present embodiment record is a kind of battery pole ear with insulating layer, including anode ear 5
With negative electrode lug 6, the anode ear 5 and negative electrode lug 6 are made of welding ends 4 with end 9 is leant out, and 4 surface of welding ends is covered
One layer of megohmite insulant of lid.
Specific embodiment 2: a kind of battery pole ear with insulating layer described in specific embodiment one, described covers
The method of lid is one of coating, cold rolling, high-temperature plasma spraying, pressing or vapor deposition.Covering method packet of the present invention
Above-mentioned five kinds of methods are included but are not limited to, megohmite insulant, which is covered on the method on tab, in any manner all should belong to the present invention
Scope.
Specific embodiment 3: a kind of battery pole ear with insulating layer described in specific embodiment one, described is exhausted
Edge substance is one of aluminium oxide, macromolecule polypropylene, PVDF, ceramics, polystyrene, polyvinyl chloride or ABS.Described is exhausted
Edge substance will have good chemical stability and electrochemical stability, not react with electrolyte, in the voltage model of battery charging and discharging
It will not be oxidized or restore in enclosing.Megohmite insulant of the present invention includes but is not limited to above-mentioned substance, any to meet electrochemistry
The substance of stability and chemical stability belongs to the scope of the present invention.
Specific embodiment 4: a kind of battery pole ear with insulating layer described in specific embodiment one, described is exhausted
The covering position of edge substance is other regions or tab welding end 4 on the welding surface at tab welding end 4 in addition to pad 1
Unwelded face.
Specific embodiment 5: a kind of battery pole ear with insulating layer described in specific embodiment one, described is exhausted
Thickness≤tab of edge substance leans out the 30% of 9 thickness of end.
Specific embodiment 6: a kind of battery pole ear with insulating layer, the weldering described in specific embodiment one
The area > for connecing end 4 leans out the area at end 9, and the sum of area of 6 welding ends 4 of anode ear 5 and negative electrode lug will be with 8 bulk area of battery core
It is equal.It can be achieved to improve the purpose that furnace temperature is tested.The shape of 6 welding ends 4 of above-mentioned anode ear 5 and negative electrode lug is not strict with,
Any shape is ok, but anode ear 5 and 6 welding ends 4 of negative electrode lug want that the shape of 8 ontology of battery core can be scrabbled up well.
In view of the energy density of battery, the thickness at tab welding end 4 can be less than the thickness for leaning out end 9.In view of electricity
The difference in thickness of the uniform problem of 8 body thickness of core, 6 welding ends 4 of anode ear 5 and negative electrode lug does not answer excessive, thicker one extremely thick
Degree should not exceed the 50% of a relatively thin pole.The welding manner of tab and pole piece 3 can be ultrasonic bond, but be not limited to this kind of welding side
Formula, it is any the connection type that tab and pole piece 3 carry out electronic conduction to be belonged to scope of the invention.Pole of the present invention
Ear material is aluminium, nickel etc., including but not limited to both the above material.
Embodiment 1
Will normally common tab (the corresponding suitable tab model of commercial cells different model battery, tab with a thickness of
0.12mm) the upper one layer of aluminum oxide of method covering that the unwelded face of welding ends 4 is sprayed using high-temperature plasma, the three of spraying
Al 2 O with a thickness of 0.01mm, after the tab is connect by the way of ultrasonic bond with pole piece 3, can when rubberizing paper
To save the step for pasting gel 2 at tab, the tab prepared in this way can not only save gummed paper, but also can reduce
Processing procedure process can also avoid the safety problem that gummed paper causes due to electrolyte, which impregnates viscosity, to be reduced at tab, electro-chemical test
Show that the battery performance prepared using this kind of tab is no different with normal battery.
Embodiment 2
Will normally common tab (the corresponding suitable tab model of commercial cells different model battery, tab with a thickness of
0.1mm) the unwelded face of welding ends 4 covers upper one layer of PP film using the method for pressing, and the PP film thickness of covering is 0.02mm, and
The special tab is connect by the way of ultrasonic bond with pole piece 3 afterwards, gummed paper can not only be saved using this tab, but also can subtract
Few processing procedure process, makes to operate simpler, and gummed paper can also be avoided to leave covering position because of electrolyte immersion and cause safety problem,
And show the chemical property that battery is had no effect on using this kind of tab by electro-chemical test.
Embodiment 3
Will normally common tab (the corresponding suitable tab model of commercial cells different model battery, tab with a thickness of
0.1mm) the unwelded face of welding ends 4 covers upper one layer of PVDF using the method for coating, the PVDF of covering with a thickness of
The tab for being coated with megohmite insulant is then connect by 0.005mm with pole piece 3, and the connection type which uses is ultrasound
Weldering, gummed paper can not only be saved using this tab, but also processing procedure process can be reduced, can also avoid gummed paper because electrolyte impregnate from
Safety problem is caused in open covering position, and will not influence the chemical properties such as capacity, multiplying power using battery prepared by the tab.
Embodiment 4
The battery that capacity is 3000mAh is devised according to normal process (i.e. normal positive and negative pole material, diaphragm, electrolyte), but
Be using tab be divided into two kinds: one is common normal tabs, i.e. the corresponding tab model of the size battery normal process,
The specification of the tab is thickness 0.1mm, another then use tab of the present invention, i.e. tab is divided into size two parts, weldering
It is larger to connect 4 areas of end, the tab specification that the present invention designs is that 4 length of welding ends is equal to 8 body length of battery core, and width is equal to battery core
The 1/2 of 8 body widths, with a thickness of 0.01mm, it is identical as normal tab specification to lean out end 9, and the tab not welding in welding ends 4
Junction covers the aluminum oxide that upper a layer thickness is 0.002mm in such a way that high-temperature plasma sprays.As shown in Figure 1: its
In, positive and negative tab merges the sum of 7 areas and is equal to 8 bulk area of battery core, and positive and negative 4 area phase of tab welding ends in the present embodiment
Deng being the 1/2 of battery body area, the welding manner of positive and negative tab welding ends 4 and pole piece is ultrasonic bond.Two kinds of batteries remaining
Processing procedure process is completely the same.Two kinds of batteries of preparation are respectively finally taken into 3 progress furnace temperature tests, the results showed that normal tab
There is one to test in 3, battery by furnace temperature, 2 do not pass through, and the battery 3 of tab of the present invention is used only to pass through furnace temperature
Test.
Embodiment 5
The battery that capacity is 3800mAh is devised according to normal process (i.e. normal positive and negative pole material, diaphragm, electrolyte), but
Be using tab be divided into two kinds: one is common normal tabs, i.e. the corresponding tab model of the size battery normal process,
The specification of the tab is thickness 0.12mm, another then use tab of the present invention, i.e. tab is divided into size two parts, weldering
It is larger to connect 4 areas of end, the tab specification that the present invention designs is that 4 width of welding ends is equal to 8 body width of battery core, and length is equal to battery core
The 1/2 of 8 body lengths, with a thickness of 0.01mm, it is identical as normal tab specification to lean out end 9, and the tab not welding in welding ends 4
Junction covers the PVDF that upper a layer thickness is 0.005mm by way of coating.As shown in Figure 2: where positive and negative tab welding ends
The sum of 4 areas are equal to 8 bulk area of battery core, and positive and negative 4 area equation of tab welding ends in the present embodiment, are battery body face
The welding manner of long-pending 1/2, positive and negative tab welding ends 4 and pole piece 3 is ultrasonic bond.The tab extraction side of two kinds of batteries of the embodiment
Formula is that heterodoxy is drawn, remaining processing procedure process is completely the same.Two kinds of batteries of preparation are respectively finally taken into 3 progress furnace temperature surveys
Examination, the results showed that there are 2 to test by furnace temperature in normal tab 3, battery, 1 does not pass through, and uses tab of the present invention
Battery 3 only tested by furnace temperature, illustrate to can be improved furnace temperature really using tab of the present invention and tests percent of pass, and
Reduce rubberizing paper step at tab.
Embodiment 6
The battery that capacity is 4100mAh/g is devised according to common process (i.e. conventional positive and negative pole material, diaphragm, electrolyte),
Be divided into two groups according to the difference of tab, one group using common normal tab, i.e., the corresponding tab model of common process (with a thickness of
0.12mm), tab of the present invention is used for another group, i.e. tab is divided into size two parts, and 4 area of welding ends is larger, the present invention
The tab specification of design is that 4 width of welding ends is equal to 8 body width of battery core, and length is equal to the 1/2 of 8 body length of battery core, thickness
For 0.01mm, it is identical as normal tab specification to lean out end 9, and the tab passes through coating at the position of the non-solder point of welding ends 4
Mode cover a layer thickness be 0.004mm ABS.Wherein, the sum of positive and negative 4 area of tab welding ends is equal to 8 ontology of battery core
Area, and positive and negative 4 area equation of tab welding ends in the present embodiment, are the 1/2 of 8 bulk area of battery core, positive and negative tab welding
The welding manner of end 4 and pole piece 3 is ultrasonic bond.The tab lead-out mode of two kinds of batteries of the embodiment is that heterodoxy is drawn, remaining
Processing procedure process is completely the same, finally respectively takes 5 to carry out 130 DEG C of furnace temperature on two kinds of batteries of preparation and tests, 3 in normal tab group
Only by test, 2 do not pass through, all pass through 130 DEG C of furnace temperature using one group of 5 battery of tab of the present invention and test, say
The bright invention tab plays the effect.
Claims (6)
1. a kind of battery pole ear with insulating layer, including anode ear (5) and negative electrode lug (6), the anode ear (5) and cathode
Ear (6) is by welding ends (4) and leans out end (9) and forms, it is characterised in that: welding ends (4) surface covers one layer of insulation
Substance.
2. a kind of battery pole ear with insulating layer according to claim 1, it is characterised in that: the method for the covering
For one of coating, cold rolling, high-temperature plasma spraying, pressing or vapor deposition.
3. a kind of battery pole ear with insulating layer according to claim 1, it is characterised in that: the megohmite insulant is
One of aluminium oxide, polypropylene, PVDF, ceramics, polystyrene, polyvinyl chloride or ABS.
4. a kind of battery pole ear with insulating layer according to claim 1, it is characterised in that: the megohmite insulant
Covering position is that other regions in addition to pad (1) or tab welding end (4) are not on the welding surface of tab welding end (4)
Welding surface.
5. a kind of battery pole ear with insulating layer according to claim 1, it is characterised in that: the megohmite insulant
Thickness≤tab leans out the 30% of end (9) thickness.
6. a kind of battery pole ear with insulating layer according to claim 1, it is characterised in that: the welding ends (4)
Area > lean out the areas of end (9), the sum of area of anode ear (5) and negative electrode lug (6) welding ends (4) will with battery core (8) this
Bulk area is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910305294.1A CN109888164A (en) | 2019-04-16 | 2019-04-16 | A kind of battery pole ear with insulating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910305294.1A CN109888164A (en) | 2019-04-16 | 2019-04-16 | A kind of battery pole ear with insulating layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109888164A true CN109888164A (en) | 2019-06-14 |
Family
ID=66937504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910305294.1A Pending CN109888164A (en) | 2019-04-16 | 2019-04-16 | A kind of battery pole ear with insulating layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109888164A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112397685A (en) * | 2020-11-16 | 2021-02-23 | 珠海冠宇电池股份有限公司 | Negative plate and application thereof |
| WO2022001968A1 (en) * | 2020-06-30 | 2022-01-06 | 厦门海辰新能源科技有限公司 | Current collector and preparation process therefor, pole piece and preparation process therefor, and lithium battery |
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| CN207977393U (en) * | 2018-03-26 | 2018-10-16 | 珠海格力电器股份有限公司 | Large soft package lithium ion battery |
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2019
- 2019-04-16 CN CN201910305294.1A patent/CN109888164A/en active Pending
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| JP5535465B2 (en) * | 2008-10-28 | 2014-07-02 | Ｎｅｃエナジーデバイス株式会社 | Non-aqueous electrolyte secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant after: Zhuhai CosMX Battery Co.,Ltd. Address before: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190614 |