CN206040872U - Cell structure of lithium ion battery - Google Patents
Cell structure of lithium ion battery Download PDFInfo
- Publication number
- CN206040872U CN206040872U CN201621013961.7U CN201621013961U CN206040872U CN 206040872 U CN206040872 U CN 206040872U CN 201621013961 U CN201621013961 U CN 201621013961U CN 206040872 U CN206040872 U CN 206040872U
- Authority
- CN
- China
- Prior art keywords
- core
- aluminum cover
- ion battery
- rivet
- insulating barrier
- 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
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Classifications
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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
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The application discloses cell structure of lithium ion battery belongs to the ion battery technology field. Cell structure of lithium ion battery is including rolling up core and aluminum cover board, the skin of rolling up the core is equipped with roll tight book core insulating layer of core parcel. The side that the aluminum cover board of core was rolled up to the orientation is equipped with the nickel piece, and the side of keeping away from the aluminum cover board of roll core is equipped with the rivet, be equipped with between nickel piece and the aluminum cover board nickel piece and the insulating lower insulative layer of aluminum cover board, the rivet passes aluminum cover board and lower insulative layer to rivet with the nickel piece. The utility model provides an among the cell structure of lithium ion battery, the skin of rolling up the core still is equipped with the one deck and rolls up the core insulating layer, will roll up the core and wrap up completely, prevents that the skin of book core when the shell is gone into to roll core from being rubbed the bad and electric in -core portion of the negative pole piece short circuit that leads to, improves the security performance of electric core.
Description
Technical field
The application belongs to ion battery technology field, specifically, is related to a kind of battery core structure of lithium-ion battery.
Background technology
Lithium ion battery：It is a kind of secondary cell (rechargeable battery), it relies primarily on lithium ion between a positive electrode and a negative electrode
Movement carrys out work.In charge and discharge process, Li+ comes and goes embedded and deintercalation between two electrodes：During charging, Li+ is de- from positive pole
Embedding, through the embedded negative pole of electrolyte, negative pole is in rich lithium state；It is then contrary during electric discharge.Battery is typically using containing elemental lithium
Material, as electrode, is the representative of modern high performance battery.
At present, the making of cell phone type resultant battery is mainly used in as the lithium ion battery cell of shell using aluminum hull, is handss
The important component part of machine class resultant battery.Aluminum hull Li-like ions battery core operation during manufacturing is various, process portion
In manufacturing process, operating personnel's operation is easily slipped up, and causes battery core bad or slight bad.For example, existing core outermost layer is
The thickness only aluminium foil of about 0.012-0.016mm, when operating personnel enters core to inside aluminum hull, easily damages outermost layer aluminium foil
Hinder, rub, and easily cause the corresponding barrier film of breakage and negative plate position bad, easily cause battery core internal short-circuit.And weld
Lug is rolled over after connecing and when entering shell, negative electrode lug has occurred pull to drag cover plate nickel sheet, caused nickel sheet to shift, cause battery core internal short-circuit etc.
Deng.
Utility model content
In view of this, when technical problems to be solved in this application are existing battery battery core manufacturing process complexity, such as shell
Easily damaged, negative electrode lug pulls and drags nickel sheet etc. and cause battery core internal short-circuit core outer layer, causes battery core bad.
In order to solve above-mentioned technical problem, the application has opened a kind of battery core structure of lithium-ion battery.The lithium ion battery
Core strueture, including core and Aluminum cover, it is characterised in that the outer layer of the core is provided with core insulating barrier, towards the volume
The side of the Aluminum cover of core is provided with nickel sheet, is provided with rivet away from the side of the Aluminum cover of the core；The nickel sheet
Lower insulating barrier is provided between Aluminum cover, and the rivet passes through the Aluminum cover and lower insulating barrier, and rivets with the nickel sheet.
Preferably, the core is provided with anode ear and negative electrode lug, near the anode ear and negative electrode lug of the core
One end be provided with lug insulating barrier.
Preferably, the core insulating barrier is PET gummed papers.
Further, be provided with the through hole passed through for the rivet on the Aluminum cover, the through hole with diameter greater than described
The diameter of rivet；Insulating barrier is provided between the through hole and rivet and between the rivet and Aluminum cover.
Preferably, the material of the rivet is rustless steel.
Further, the upper insulating barrier and lower insulating barrier are insulating cement.
Preferably, the upper insulating barrier and lower insulating barrier are formed by being molded insulating cement.
Further, boss is additionally provided with away from the side of the Aluminum cover of the nickel sheet；The boss and Aluminum cover one
Body formed, the convex edge of table stretches out the Aluminum cover.
Further, liquid injection hole is also provided with the Aluminum cover.
Compared with prior art, the application can be obtained including following technique effect：
1), in the battery core structure of lithium-ion battery of the application, the outer layer of core is additionally provided with one layer of core insulating barrier, by core
Fully wrapped around, when preventing core winding into shell, the outer layer of core is rubbed that caused negative plate is bad and battery core internal short-circuit.Aluminum cover
With nickel sheet by rivet, lower insulating barrier between nickel sheet and Aluminum cover, is provided with, nickel sheet is connected firmly tight and exhausted with Aluminum cover
Edge, prevents negative electrode lug from pulling and drags nickel sheet and battery core internal short-circuit that nickel sheet displacement is caused, prevent battery core bad, improve the safety of battery core
Performance.
2), in the application, the anode ear and negative electrode lug in battery core is equipped with lug insulating barrier, positive pole near one end of core
The exposed position of ear and negative electrode lug is welded, and prevent that the contact of both positive and negative polarity inside battery core from causing is bad.
3) in the application, the diameter with diameter greater than rivet of institute's opened hole on Aluminum cover, between through hole and rivet, rivet with
Insulating barrier is formed by being molded insulating cement between cover plate and between nickel sheet and cover plate, it is ensured that Aluminum cover both positive and negative polarity is completely exhausted
Edge, improves the security performance of battery core.
Certainly, the arbitrary product for implementing the application must be not necessarily required to while reaching all the above technique effect.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please does not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the battery core structure of lithium-ion battery schematic diagram of the application；
Fig. 2 is the schematic diagram of core in the application；
Fig. 3 is the schematic side view of Aluminum cover in the application；
Fig. 4 is the elevational schematic view of Aluminum cover in the application.
In figure, 1- core, 101- anode ears, 102- negative electrode lugs, 103- core insulating barriers, 104- lug insulating barriers, 2- lids
Plate, 201- rivets, 202- nickel sheet, the upper insulating barriers of 203-, insulating barrier under 204-, 205- liquid injection holes, 206- boss.
Specific embodiment
Describe presently filed embodiment below in conjunction with drawings and Examples in detail, thereby how the application is applied
Technological means come solve technical problem and reach technology effect realize that process can fully understand and implement according to this.
As in description and claim some vocabulary used in censuring specific components.Those skilled in the art should
It is understood that hardware manufacturer may call same component with different nouns.This specification and claims are not with name
The difference of title is used as distinguishing the mode of component, but the difference with component functionally is used as the criterion distinguished.Such as logical
The "comprising" of description and claim mentioned in is an open language, thus should be construed to " comprising but do not limit
In "." substantially " refer in receivable range of error, those skilled in the art can solve described in the range of certain error
Technical problem, basically reaches the technique effect.Additionally, " coupling " word here includes any directly and indirectly electric property coupling
Means.Therefore, if a first device is coupled to a second device described in text, representing the first device can direct electrical coupling
The second device is connected to, or the second device is electrically coupled to indirectly by other devices or coupling means.Description
Subsequent descriptions are to implement the better embodiment of the application, so the description be for the purpose of the rule for illustrating the application,
It is not limited to scope of the present application.The protection domain of the application ought be defined depending on the defined person of claims.
Also, it should be noted that term " including ", "comprising" or its any other variant are intended to nonexcludability
Comprising, so that a series of commodity or system including key elements not only include those key elements, but also including without clear and definite
Other key elements listed, or also include the key element intrinsic for this commodity or system.In the feelings for not having more restrictions
Under condition, the key element limited by sentence "including a ...", it is not excluded that in the commodity including the key element or system also
There is other identical element.
Fig. 1 and Fig. 2 is referred to, the application provides a kind of battery core structure of lithium-ion battery, and which includes core 1 and Aluminum cover 2.
The outer surface of core 1 is provided with and for core 1 to wrap up tight core insulating barrier 103.Anode ear 102 and negative electrode lug 101 stretch out volume
Core 1 and core insulating barrier 103.Anode ear 102 and negative electrode lug 101 are equipped with lug insulating barrier 104 near one end of core 1.Make
For a kind of embodiment, the material of core insulating barrier 103 is PET gummed papers.
The core 1 of not encapsulated paper is outermost for the thickness only aluminium foil of about 0.012-0.016mm, makes lithium ion battery
During core strueture, core need to be loaded in aluminum hull, outermost layer aluminium foil damaged, rubbed during entering shell, and easily make
Obtain the corresponding barrier film of breakage and 101 position of negative electrode lug is bad, easily cause the hidden danger of battery core internal short-circuit, will with PET gummed papers
After 1 outermost layer of core winding, one circle is completely covered, entering brokenly for causing when preventing core winding into shell is bad, greatly improves battery core
Security performance.
Aluminum cover 2 is provided with nickel sheet 202, the side away from the Aluminum cover 2 of core 1 towards the side of core 1 and is provided with rivet
201.In the present embodiment, the material of rivet 201 is rustless steel, and in other schemes, rivet 201 is alternatively other materials.
Rivet 201 connects outer protection board negative pole end, 202 groups of core negative electrode lug end, rivet 201 and nickel sheet inside the connection battery core of nickel sheet 202
Into the negative pole of Aluminum cover 2, the outer protection board positive terminal of Aluminum cover 2 connection itself and internal core anode ear end, Aluminum cover 2 is made itself
For positive pole.
The through hole for allowing that rivet 201 is passed through is provided with Aluminum cover 2, and rivet 201 passes through through hole, and rivets with nickel sheet 202, really
Protect nickel sheet 202 to be connected firmly with Aluminum cover 2, not because pulling for negative electrode lug 101 is dragged and shift and cause battery core internal short-circuit.
The lower insulating barrier 204 that nickel sheet 202 and Aluminum cover 2 insulate is provided between nickel sheet 202 and Aluminum cover 2.Rivet 201 with
The upper insulating barrier 203 that rivet 201 and Aluminum cover 2 insulate is provided between Aluminum cover 2.Through hole it is straight with diameter greater than rivet 201
Footpath, is provided with insulating barrier 203 between rivet 201 and through hole.Upper insulating barrier 203 and lower insulating barrier 204 by the positive pole of Aluminum cover 2 and
Negative insulation.
Upper insulating barrier 203 and lower insulating barrier 204 can be for arbitrarily realizing the material of insulation, as a kind of embodiment party in the battery
Case, upper insulating barrier 203 and lower insulating barrier 204 are insulating cement, and are molded by insulating cement.
Boss 206 is additionally provided with away from the side of the Aluminum cover 2 of nickel sheet 202, the edge of boss 206 stretches out Aluminum cover 2, with aluminum
Cover plate 2 forms ladder platform, the convenient cooperation with core 1.Aluminum cover 2 can cover core 1, after core 1 enters shell, Aluminum cover 2 and aluminum
Shell coordinates, and seals core 1.
The liquid injection hole 205 that electrolysis liquid injects core 3 is additionally provided with Aluminum cover 2, facilitates fluid injection, the chemical conversion of later stage battery core.
Described above illustrates and describes some preferred embodiments of the present utility model, but as previously mentioned, it should be understood that this
Utility model is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and can be used for various
Other combinations, modification and environment, and can be in utility model contemplated scope described herein, by above-mentioned teaching or association area
Technology or knowledge be modified.And change that those skilled in the art are carried out and change are without departing from spirit of the present utility model and model
Enclose, then all should be in the protection domain of this utility model claims.
Claims (9)
1. a kind of battery core structure of lithium-ion battery, including core and Aluminum cover, it is characterised in that the outer layer of the core is provided with volume
Core insulation layer, is provided with nickel sheet towards the side of the Aluminum cover of the core, away from the side of the Aluminum cover of the core
Face is provided with rivet；Lower insulating barrier is provided between the nickel sheet and Aluminum cover, and the rivet passes through the Aluminum cover and lower insulating barrier,
And rivet with the nickel sheet.
2. battery core structure of lithium-ion battery as claimed in claim 1, it is characterised in that the core is provided with anode ear and negative
Lug, the one end near the anode ear and negative electrode lug of the core are provided with lug insulating barrier.
3. battery core structure of lithium-ion battery as claimed in claim 1 or 2, it is characterised in that the core insulating barrier is PET glue
Paper.
4. battery core structure of lithium-ion battery as claimed in claim 1, it is characterised in that be provided with the Aluminum cover for the riveting
Follow closely through through hole, the diameter with diameter greater than the rivet of the through hole；Between the through hole and rivet and the rivet with
Insulating barrier is provided between Aluminum cover.
5. battery core structure of lithium-ion battery as claimed in claim 4, it is characterised in that the material of the rivet is rustless steel.
6. battery core structure of lithium-ion battery as claimed in claim 4, it is characterised in that the upper insulating barrier and lower insulating barrier are
Insulating cement.
7. battery core structure of lithium-ion battery as claimed in claim 6, it is characterised in that the upper insulating barrier and lower insulating barrier are logical
Cross injection insulating cement and formed.
8. the battery core structure of lithium-ion battery as described in claim 1,4-7 is arbitrary, it is characterised in that away from the institute of the nickel sheet
The side for stating Aluminum cover is additionally provided with boss；The boss is integrally formed with Aluminum cover, and the convex edge of table stretches out the aluminium lid
Plate.
9. battery core structure of lithium-ion battery as claimed in claim 1, it is characterised in that be also provided with fluid injection on the Aluminum cover
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013961.7U CN206040872U (en) | 2016-08-31 | 2016-08-31 | Cell structure of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013961.7U CN206040872U (en) | 2016-08-31 | 2016-08-31 | Cell structure of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206040872U true CN206040872U (en) | 2017-03-22 |
Family
ID=58301356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013961.7U Expired - Fee Related CN206040872U (en) | 2016-08-31 | 2016-08-31 | Cell structure of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206040872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224103A (en) * | 2019-07-25 | 2019-09-10 | 蜂巢能源科技有限公司 | Preparation method for the tab of battery, lithium ion battery and lithium ion battery |
-
2016
- 2016-08-31 CN CN201621013961.7U patent/CN206040872U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224103A (en) * | 2019-07-25 | 2019-09-10 | 蜂巢能源科技有限公司 | Preparation method for the tab of battery, lithium ion battery and lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170322 Termination date: 20200831 |