CN109860725A - A kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure - Google Patents
A kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure Download PDFInfo
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- CN109860725A CN109860725A CN201811585752.3A CN201811585752A CN109860725A CN 109860725 A CN109860725 A CN 109860725A CN 201811585752 A CN201811585752 A CN 201811585752A CN 109860725 A CN109860725 A CN 109860725A
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- Prior art keywords
- battery
- tab
- lithium ion
- heat dissipating
- internal heat
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
A kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure, it is characterized in that, battery structure includes: steel shell (1), nut cap (2), positive plate (3), diaphragm (4), negative electrode tab (5), electrolyte (6), insulating layer (7), conductive layer (9).Cell cathode ear pole (8) forms pad (10) after connecing by point back welding.The contact that tab with shell bottom can be significantly improved by the fixed tab of conducting resinl, improves withstanding current capability, is suitble to high-power applications battery.It can solve the risk for causing tab to fall off because of high vibration by the fixation of conducting resinl.By insulating layer and conductive layer, the heat that battery can be made to generate in heavy-current discharge quickly sheds.
Description
Technical field
The invention belongs to technical field of lithium ion, are related to a kind of cylinder with internal heat dissipating and tab fixed structure
Type lithium ion battery and preparation method.
Background technique
Since lithium ion battery has many advantages, such as that energy density is high, self discharge is small, cycle performance is superior, lithium ion battery is wide
It is general be applied to backup power source, energy storage device, electric car, electric bicycle, in electric tool.Lithium battery mainly has positive, negative
Pole, diaphragm, electrolyte and 5 part of shell composition.According to shell mode, it is divided into cylindrical battery, rectangular cell and soft-package battery.Circle
Column battery only forms one or two solder joint, will appear when battery is large current discharge in negative lug welding process
The larger situation of local heat production.It is unfavorable for being large current discharge additionally, due to solder joint area is smaller, and solder joint is in strong vibrator bar
There is the risk to fall off under part.Therefore need to solve the problems, such as that negative lug welding position is thermally conductive and conductive poor.
Patent name: a kind of lithium battery and radiator, number of patent application: 201820115630.7, patent publication No.:
207834495U discloses a kind of lithium battery and radiator, including lithium battery casing, explosion-proof cap, core, steel needle and graphite
Alkene radiator, wherein lithium battery casing is in hollow structure, and lithium battery casing includes bulge-structure and cylindrical structure, is prevented
Quick-fried nut cap is set to inside the bulge-structure and mechanical seal.The patent the utility model has the advantages that by the periphery of the core
The graphene radiator being arranged continuously can pass through the cooling fin by the continual heat for generating lithium battery interior
It is transmitted to inside the graphene heat-dissipating pipe, and is discharged into heat inside the bulge-structure by the cooling ring, and pass through
Heat is excluded the inside of lithium battery by the gas vent.The patent is by graphene radiator, when the patent of invention of application
It by conducting resinl and casting glue, is fixed by pole ear, plays the role of heat dissipation, improves a point back welding and fix and electric conductivity.The two
There is apparent difference.
Number of patent application: 201621273440.5, patent publication No.: 206293500U, patent name: a kind of heat dissipation of collection plus
The electrostrictive polymer core power battery module of hot one, it is disclosed that a kind of electrostrictive polymer core power electricity of collection heat dissipation heating one
Pond module, including battery core bracket, battery core and aluminum hull clamping plate, battery core bracket are cuboid internal cavities, and more than two battery cores are put
It sets in battery core bracket, aluminum hull clamping plate is close in the outermost two sides of battery core, and tab connection sheet or aluminium sheet are connect with the positive and negative tab of battery core, electricity
The one side of core pastes and pastes silica gel piece at green special cotton and cell polar ear；Two or more pastes the battery core of green special cotton and silica gel piece,
Heat conductive graphite piece is pasted on green special cotton face the same face with pasting in a wherein battery core again, heating sheet be placed on two battery cores it
Between and heating sheet two sides mutually pasted with green special cotton face respectively；Temperature sensor is connect with heat conductive graphite piece.It is provided simultaneously with heat dissipation
And heating function, but the patent belongs to the heat radiation structure design outside battery core, is suitble to battery Pack.With the patent of invention of application,
There is basic difference on radiator structure.
Summary of the invention
The present invention provides a kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure,
It is controlled by structure design and processes.It can effectively solve the problems, such as that negative lug welding position is thermally conductive and conductive poor.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of cylindrical lithium ion battery with internal heat dissipating and tab fixed structure, including steel shell are provided with lid on steel shell
Cap, characterized in that battery roll core is provided in steel shell, battery roll core includes that positive plate, diaphragm, negative electrode tab are successively mutually rolled up,
Be additionally provided with electrolyte in steel shell, battery roll core bottom is provided with cell cathode ear pole, cell cathode ear pole by conductive layer into
Row is wrapped up and is fixed, and conductive layer covers a layer insulating, and cell cathode ear pole forms pad after connecing by a point back welding.
, acetone 20 ~ 200 carries out cathode point back welding after inside battery core winding into shell and connects to form pad；It is then injected into epoxy
Resin conductive glue forms conductive layer after solidification；Epoxy resin embedding adhesive is finally injected, forms insulating layer after solidification.200~
650, butanediol diglycidyl ether 3 ~ 15, conducting particles conductive layer is formed by curing by epoxide resin conductive adhesive, formulation weight
Than are as follows: epoxy resin 80 ~ 110, triethanolamine 12 ~ 20
, acetone 50 ~ 300.The curing process of the epoxy resin embedding adhesive is 6 ~ 24 hours at 50 ~ 70 DEG C.100, polyamide
170 ~ 180, conducting particles described in liquid butyronitrile 5 ~ 20 is silver powder, copper powder, aluminium powder, iron powder, nickel powder, electrically conductive graphite, carbon nanometer
One of pipe is a variety of compound.The curing process of the epoxide resin conductive adhesive is 4 ~ 24 hours at 60 ~ 80 DEG C.It is described exhausted
Edge layer is formed by curing for epoxy resin embedding adhesive, formulation weight ratio are as follows: 4,4- dihydroxydiphenylsulisomer epoxy resin
The method have the benefit that:
1, the contact that tab with shell bottom can be significantly improved by the fixed tab of conducting resinl, improves withstanding current capability, is suitble to big
Power application battery.
2, the risk for causing tab to fall off because of high vibration can solve by the fixation of conducting resinl.
3, by insulating layer and conductive layer, the heat that battery can be made to generate in heavy-current discharge quickly sheds.
4, the patent of invention applied is that the contact of tab with shell bottom can be significantly improved by the fixed tab of conducting resinl, is improved
Withstanding current capability is suitble to high-power applications batteries.It can solve by the fixation of conducting resinl because high vibration leads to tab
The risk to fall off.It can solve the risk for causing tab to fall off because of high vibration by the fixation of conducting resinl.Pass through insulating layer
And conductive layer, the heat that battery can be made to generate in heavy-current discharge quickly shed.By with existing patent, apply for a patent category
In innovation.
Detailed description of the invention
Fig. 1: outside batteries structure chart
Fig. 2: inside battery structure chart and bottom partial enlargement structure chart；
Fig. 3: Fig. 2 partial enlarged view.
In attached drawing, 1, steel shell；2, nut cap；3, positive plate；4, diaphragm；5, negative electrode tab；6, electrolyte；7, insulating layer；8, electric
Pond negative lug；9, conductive layer；10, pad.
Specific embodiment
Embodiment 1
A kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure, with 26650-3Ah-
For 3.2V size battery, structure includes: steel shell (1), nut cap (2), positive plate (3), diaphragm (4), cathode as shown in Figure 1 and Figure 2
Piece (5), electrolyte (6), insulating layer (7), conductive layer (9).Cell cathode ear pole (8) forms pad after connecing by point back welding
(10).
Tab (8) is wrapped up and is fixed by conductive layer (9), and conductive layer (9) covers a layer insulating (7) above.
Cathode point back welding is carried out after inside battery core winding into shell to connect to form pad (10).
5, acetone 70., triethanolamine 15, copper powder 400, butanediol diglycidyl ether injection epoxide resin conductive adhesive,
Conductive layer (9) are formed after solidification, conductive layer (9) is formed by curing by epoxide resin conductive adhesive, is formulated (weight ratio) are as follows: epoxy resin
100
The curing process of epoxide resin conductive adhesive is 14 hours at 70 DEG C.
, liquid butyronitrile 10, acetone 100.Glue forms insulating layer (7) after solidification, and insulating layer (7) is epoxy resin embedding adhesive
It is formed by curing.It is formulated (weight ratio) are as follows: 4,4- dihydroxydiphenylsulisomer epoxy resin 100, polyamide 180 inject epoxy resin and fill
Envelope
The curing process of epoxy resin embedding adhesive is 6 hours at 70 DEG C.
It is compared before battery is large current discharge and is improved, tests bottom end temperature.As shown in the table, it can be seen that
Under same electric current, the battery bottom end temperature after change is substantially reduced 4 ~ 7 DEG C or so.
Claims (6)
1. a kind of cylindrical lithium ion battery with internal heat dissipating and tab fixed structure, including steel shell (1), on steel shell (1)
Be provided with nut cap (2), characterized in that be provided with battery roll core in steel shell (1), battery roll core include positive plate (3), diaphragm (4),
Negative electrode tab (5) is successively mutually rolled up, and is additionally provided with electrolyte (6) in steel shell (1), battery roll core bottom is provided with battery cathode pole
Ear (8), cell cathode ear pole (8) are wrapped up and are fixed by conductive layer (9), and conductive layer (9) covers a layer insulating above
(7), cell cathode ear pole (8) forms pad (10) after connecing by point back welding.
2. a kind of preparation method of the cylindrical lithium ion battery with internal heat dissipating and tab fixed structure as described in power 1,
It is characterized in that conductive layer (9) is formed by curing by epoxide resin conductive adhesive, it is formulated (weight ratio) are as follows: epoxy resin 80 ~ 110, three second
Hydramine 12 ~ 20, conducting particles 200~650,3 ~ 15 acetone 20 ~ 200 of butanediol diglycidyl ether, inside battery core winding into shell
Cathode point back welding is carried out afterwards to connect to form pad (10)；It is then injected into epoxide resin conductive adhesive, forms conductive layer (9) after solidification；
Epoxy resin embedding adhesive is finally injected, forms insulating layer (7) after solidification.
3. a kind of system of cylindrical lithium ion battery with internal heat dissipating and tab fixed structure according to claim 2
Preparation Method, characterized in that the conducting particles is silver powder, in copper powder, aluminium powder, iron powder, nickel powder, electrically conductive graphite, carbon nanotube
It is one or more compound.
4. a kind of cylindrical lithium ion battery and preparation with internal heat dissipating and tab fixed structure according to claim 2
Method, which is characterized in that the curing process of affiliated epoxide resin conductive adhesive is 4 ~ 24 hours at 60 ~ 80 DEG C.
5. a kind of cylindrical lithium ion battery and preparation with internal heat dissipating and tab fixed structure according to claim 2
Method, it is characterised in that the insulating layer (7) is formed by curing for epoxy resin embedding adhesive, is formulated (weight ratio) are as follows: 4,4- dihydroxies
Base diphenyl sulphone (DPS) epoxy resin 100, polyamide 170 ~ 180, liquid butyronitrile 5 ~ 20, acetone 50 ~ 300.
6. a kind of cylindrical lithium ion battery and preparation with internal heat dissipating and tab fixed structure according to claim 2
Method, which is characterized in that the curing process of affiliated epoxy resin embedding adhesive is 6 ~ 24 hours at 50 ~ 70 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811585752.3A CN109860725A (en) | 2018-12-25 | 2018-12-25 | A kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811585752.3A CN109860725A (en) | 2018-12-25 | 2018-12-25 | A kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure |
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| CN109860725A true CN109860725A (en) | 2019-06-07 |
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ID=66892071
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811585752.3A Pending CN109860725A (en) | 2018-12-25 | 2018-12-25 | A kind of cylindrical lithium ion battery and preparation method with internal heat dissipating and tab fixed structure |
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| CN (1) | CN109860725A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211377A (en) * | 2020-01-15 | 2020-05-29 | 天能帅福得能源股份有限公司 | System and method for monitoring temperature of cylindrical lithium ion battery |
| CN111354915A (en) * | 2020-04-24 | 2020-06-30 | 福建南平延平区南孚新能源科技有限公司 | Button battery pole shell and electrode lug traceless welding method, welding structure and product |
| CN113937428A (en) * | 2021-09-30 | 2022-01-14 | 广东微电新能源有限公司 | Battery, battery preparation method, battery detection method and electronic equipment |
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| CN203617380U (en) * | 2013-12-18 | 2014-05-28 | 山东精工电子科技有限公司 | Cylindrical shock-resistant lithium ion battery |
| CN104577192A (en) * | 2015-01-05 | 2015-04-29 | 国家电网公司 | High-rate lithium ion power battery and manufacturing method thereof |
| CN107732287A (en) * | 2017-06-20 | 2018-02-23 | 东莞市创明电池技术有限公司 | Column lithium ion battery |
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2018
- 2018-12-25 CN CN201811585752.3A patent/CN109860725A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203617380U (en) * | 2013-12-18 | 2014-05-28 | 山东精工电子科技有限公司 | Cylindrical shock-resistant lithium ion battery |
| CN104577192A (en) * | 2015-01-05 | 2015-04-29 | 国家电网公司 | High-rate lithium ion power battery and manufacturing method thereof |
| CN107732287A (en) * | 2017-06-20 | 2018-02-23 | 东莞市创明电池技术有限公司 | Column lithium ion battery |
Non-Patent Citations (2)
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| 孙酣经等: "《化工新材料及其应用》", 31 May 1991 * |
| 李祖德等: "《塑料加工技术应用手册》", 31 October 1997 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211377A (en) * | 2020-01-15 | 2020-05-29 | 天能帅福得能源股份有限公司 | System and method for monitoring temperature of cylindrical lithium ion battery |
| CN111211377B (en) * | 2020-01-15 | 2021-06-01 | 天能帅福得能源股份有限公司 | System and method for monitoring temperature of cylindrical lithium ion battery |
| CN111354915A (en) * | 2020-04-24 | 2020-06-30 | 福建南平延平区南孚新能源科技有限公司 | Button battery pole shell and electrode lug traceless welding method, welding structure and product |
| CN111354915B (en) * | 2020-04-24 | 2023-06-23 | 福建南平延平区南孚新能源科技有限公司 | Button cell electrode shell and electrode lug traceless welding method, welding structure and product |
| CN113937428A (en) * | 2021-09-30 | 2022-01-14 | 广东微电新能源有限公司 | Battery, battery preparation method, battery detection method and electronic equipment |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190607 |
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| RJ01 | Rejection of invention patent application after publication |