CN108054334A - A kind of battery pole ear and battery - Google Patents
A kind of battery pole ear and battery Download PDFInfo
- Publication number
- CN108054334A CN108054334A CN201711049756.5A CN201711049756A CN108054334A CN 108054334 A CN108054334 A CN 108054334A CN 201711049756 A CN201711049756 A CN 201711049756A CN 108054334 A CN108054334 A CN 108054334A
- Authority
- CN
- China
- Prior art keywords
- battery
- connecting portion
- pole piece
- lug
- folding shape
- 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.)
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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
- H01M50/543—Terminals
-
- 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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of battery pole ear and battery, which includes：Roll over shape lug main body (3) and gel (2)；Wherein, the folding shape lug main body (3), including：First connecting portion (31) and second connecting portion (32) form folding shape structure between the first connecting portion (31) and the second connecting portion (32)；The gel (2) is installed on the first connecting portion (31).The solution of the present invention can overcome and weld that occupied space is big, active material coated weight is few and reduces the defects of battery capacity plays in the prior art, realize welding occupy little space, active material coated weight mostly with the advantageous effect that increases battery capacity and play.
Description
Technical field
The invention belongs to technical field of lithium batteries, and in particular to a kind of battery pole ear and battery more particularly to one kind are favourable
In the extreme ear structure design and the lithium battery designed with the extreme ear structure that improve the performance of 3C lithium battery capacities.
Background technology
Lithium battery, be it is a kind of by lithium metal or lithium alloy be negative material, the battery using non-aqueous electrolytic solution.In recent years
Come, with the development of science and technology, while people using digital electronic goods by greatly promoting quality of the life, more pursue production
Frivolous beautiful, the long-endurance feature of product.Therefore, the lithium battery as its energy source is also always in past volume accounting
Direction small, that energy density is high is developed, this means that smaller volume receives more electricity.Improve what battery capacity played
There are many kinds of modes, such as improves the methods of material gram is than energy, binding agent stronger using caking property, but this has relied on newly
The breakthrough and industrialization of material technology；Also a kind of mode be exactly coated on collector of the same area more active materials with
Improve battery capacity.
Traditional lithium battery, since the reserved needs in tab welding area sacrifice very big afflux bulk area, to ensure lug
Welding high temperature is avoided not influence the performance of active material while welding, so as to affect the performance of lithium battery capacity.
In the prior art, have that welding occupied space is big, active material coated weight is few and reduce battery capacity and play etc. and lack
It falls into.
The content of the invention
It is an object of the present invention in view of the foregoing drawbacks, a kind of battery pole ear and battery are provided, to solve in the prior art
The reserved of tab welding area causes to weld the problem of occupied space is big, achievees the effect that reduce welding occupied space.
The present invention provides a kind of battery pole ear, including：Roll over shape lug main body and gel；Wherein, the folding shape lug master
Body, including：First connecting portion and second connecting portion form folding shape knot between the first connecting portion and the second connecting portion
Structure；The gel is installed on the first connecting portion.
Optionally, the bending angle of the folding shape structure is 60 °~120 °.
Optionally, the bending angle is 90 °, and the first connecting portion is vertical portion, and the second connecting portion is level
Portion.
Optionally, the junction between the first connecting portion and the second connecting portion is interior in the folding shape structure
The distance between lower edge of portion's bending part, the internal bend portion and the gel is greater than or equal to 5mm.
Optionally, when the pole piece of folding shape lug main body and the battery is installed, in the first connecting portion with it is described
The first portion of second connecting portion connection and the second connecting portion are respectively positioned in the collector Kong Bo areas of the pole piece；Institute
It states the second portion in first connecting portion in addition to the first portion and stretches out the pole piece.
Optionally, the pole piece, including：At least one of anode pole piece, cathode pole piece.
Optionally, the collector Kong Bo areas are arranged at the fringe region of the pole piece.
Optionally, other regions in the pole piece in addition to the fringe region are active material coating zone.
Matching with above-mentioned lug, another aspect of the present invention provides a kind of battery, including：Above-described battery pole ear.
Optionally, the quantity of the battery pole ear is more than one；And/or the battery, including：Lithium battery, sodium electricity
At least one of pond, aluminum cell.
The solution of the present invention has the extreme ear structure of folding shape lug main body by that will set, and solves lug in the prior art
The reserved of welding section causes to weld the problem of occupied space is big, it is possible to reduce Kong Bo areas increase coating area, so as to increase battery
Capacity plays.
The solution of the present invention by changing extreme ear structure and its welding position on pole piece, solves tab welding area
It is reserved to need to sacrifice the problem of very big afflux bulk area causes active position coating area to be reduced, increase pole piece coating area area,
It is played so as to increase capacity, improves battery energy density.
The solution of the present invention as a result, by redesigning extreme ear structure, changes welding position of the lug on pole piece, solution
Certainly the reserved of tab welding area causes to weld the problem of occupied space is big in the prior art, so as to overcome and weld in the prior art
Occupied space is big, active material coated weight is few and reduces the defects of battery capacity plays, and realization welding occupies little space, active matter
The advantageous effect that matter coated weight is mostly played with increase battery capacity.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that being understood by implementing the present invention.
Below by drawings and examples, technical scheme is described in further detail.
Description of the drawings
Fig. 1 is the structure diagram of conventional lithium battery pole ear；
Fig. 2 is the structure diagram of conventional lithium battery；
Fig. 3 is the structure diagram of an embodiment of the battery pole ear of the present invention；
Fig. 4 is the pole piece welding structure schematic diagram of an embodiment of the battery of the present invention.
With reference to attached drawing, reference numeral is as follows in the embodiment of the present invention：
1- routine lug main bodys；2- gels；3- rolls over shape lug main body；4- pole pieces.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, belong to the scope of protection of the invention.
According to an embodiment of the invention, a kind of battery pole ear is provided, the one of the battery pole ear of the present invention is real as shown in Figure 3
Apply the structure diagram of example.The battery pole ear can include：Roll over shape lug main body 3 and gel 2.
Wherein, the folding shape lug main body 3, can include：First connecting portion 31 and second connecting portion 32, described first connects
Folding shape structure is formed between socket part 31 and the second connecting portion 32.
Wherein, which is located at for folding shape part inside foil, and ear pole material used is common metal ear pole material.
As a result, by setting the battery pole ear with folding shape lug main body so that the structure of battery pole ear changes, and can subtract
Shao Kongbo areas increase coating area (i.e. active material coating zone), are played so as to increase the capacity of battery.
Optionally, the gel 2 is installed on the first connecting portion 31.
As a result, by first connecting portion gel being installed in the folding shape lug main body, can facilitate itself and electricity
Pond body (such as battery pole piece) is installed, and conductive reliability and security can be protected.
In an optional example, the bending angle of the folding shape structure is 60 °~120 °.
Wherein, the too small then structural instability of bending angle, bending angle do not have greatly very much the work for reducing welding occupied space
With.
As a result, by the bending angle of diversified forms, the flexibility that folding shape structure is formed can be promoted, folding can also be promoted
The convenience welded between shape structure and pole piece.
Optionally, the bending angle is 90 °, and the first connecting portion 31 is vertical portion, and the second connecting portion 32 is
Horizontal part.
Such as：By conventional extreme ear structure be modified to folding shape warp architecture (such as：Roll over shape lug main body 3), bending angle is
90°。
Pass through the bending angle at right angle as a result, so that the structure bending of folding shape is convenient, but also between folding shape structure and pole piece
The convenience of welding is good, reliability is high.
In an optional example, the junction between the first connecting portion and the second connecting portion is the folding shape
The distance between internal bend portion in structure, the internal bend portion and lower edge of the gel 2 are greater than or equal to
5mm。
Such as：By conventional extreme ear structure be modified to folding shape warp architecture (such as：Roll over shape lug main body 3), bending part
With >=apart from gel lower edge 5mm.
As a result, by making to keep setpoint distance between the internal bend portion of folding shape structure and gel, on the one hand convenient for folding
It welds between shape structure and pole piece, on the other hand can facilitate convenient between gel and aluminum plastic film and reliably encapsulates.
In an optional example, when the folding shape lug main body 3 and the pole piece 4 of the battery are installed, described first connects
The first portion and the second connecting portion 32 being connected in socket part 31 with the second connecting portion 32 are respectively positioned on the pole piece 4
Collector Kong Bo areas in.Second portion in the first connecting portion 31 in addition to the first portion stretches out the pole piece 4.
Such as：By conventional extreme ear structure be modified to folding shape warp architecture (such as：Roll over shape lug main body 3), bending angle is
90 °, bending part with >=apart from gel lower edge 5mm；Change its welding position on pole piece due to extreme ear structure changes.
Such as：Extreme ear structure is redesigned, and changes the mode of welding position of the lug on pole piece, is applied to increase pole piece
Expect area's area, so as to add the performance amount of active material on the basis of original battery structure, it is close to reach the raising energy content of battery
The purpose of degree, also, method is simple, easily reach, has very big practicability.
Changed as a result, by the structure of battery pole ear, can matchingly change welding position of the battery pole ear on pole piece,
Pole piece coating area area can be increased, so as to add the performance amount of active material on the basis of original battery structure, reached
Improve the purpose of battery energy density.
Optionally, the pole piece can include：At least one of anode pole piece, cathode pole piece.
Coordinate installation by the way that the pole piece of shape lug main body and diversified forms will be rolled over as a result, battery structure setting can be promoted
Diversity and flexibility, can cause the setting of battery capacity more flexibly and conveniently.
Optionally, the collector Kong Bo areas are arranged at the fringe region of the pole piece 4.
Such as：As shown in figure 4, new extreme ear structure can be welded parallel to pole piece edge direction.
As a result, by the way that collector Kong Bo areas to be arranged on to the fringe region of pole piece, can facilitate folding shape structure and pole piece it
Between welding, can also suitably reduce collector Kong Bo areas, with opposite increase active material coating zone, and then promote battery and hold
Amount.
Optionally, other regions in the pole piece 4 in addition to the fringe region are active material coating zone.
Such as：Change extreme ear structure and its welding position on pole piece, increase pole piece coating area area, hold so as to increase
Amount plays, and improves battery energy density.
As a result, by increasing active material coating zone in pole piece, the performance amount of active material is added, is held so as to increase
Amount plays, and improves battery energy density.
Through substantial amounts of verification experimental verification, using the technical solution of the present embodiment, there is folding shape lug main body by that will set
Extreme ear structure solves the problems, such as that the reserved of tab welding area causes welding occupied space big in the prior art, it is possible to reduce empty paper tinsel
Area increases coating area, is played so as to increase the capacity of battery.
According to an embodiment of the invention, a kind of battery corresponding to battery pole ear is additionally provided.The present invention shown in Figure 4
Battery an embodiment structure diagram.The battery can include：Above-described battery pole ear.
Optionally, the quantity of the battery pole ear is more than one.
Optionally, the battery can include：At least one of lithium battery, sode cell, aluminum cell.
Wherein, above-mentioned battery pole ear is located at the battery of pole piece front end sky paper tinsel plot structure mainly for lug, using this structure
Mainly small soft-package battery, the small soft-package battery of other batteries such as sodium ion, the small soft-package battery of aluminium ion etc..
In an optional example, the lug new construction with folding shape structure can be set.
Optionally, by conventional extreme ear structure be modified to folding shape warp architecture (such as：Roll over shape lug main body 3), bending angle
For 90 °, bending part with >=apart from gel lower edge 5mm；Change its welding position on pole piece due to extreme ear structure changes
It puts.
It is illustrated in fig. 1 shown below as conventional extreme ear structure.In the routine extreme ear structure, conventional lug main body 1 is with a set pattern
The copper strips (i.e. cathode) of lattice and nickel strap (i.e. anode) bond when gel 2 is used for cell package with aluminum plastic film.
As shown in Fig. 2, conventional extreme ear structure is welded on pole piece, design for lug medium spacing and avoid welding
High temperature influences the considerations of active material capacity plays, and the collector Kong Bo areas of certain length are generally reserved on pole piece head to ensure
Welding, but the coated weight of active material on a current collector is decreased simultaneously, so the space in battery is caused very big
Waste.
Wherein, collector as the term suggests just referring to the structure or part of collecting electric current, refers mainly on lithium ion battery
It is metal foil, such as copper foil, aluminium foil, lug can also be included by referring to.Its function is mainly the electric current for generating cell active materials
Collect to form larger current versus output, therefore collector should come into full contact with active material, and internal resistance should
It is as small as possible to be preferred.
As it can be seen that the extreme ear structure of the present invention, it is possible to reduce Kong Bo areas increase coating area, so as to increase the capacity of battery hair
It waves.
In an optional example, welding position of the new extreme ear structure on pole piece can be set.
Optionally, general tab welding is ultrasonic bonding, as shown in Fig. 2, normal welding lug is perpendicular to pole piece side
It welds in edge direction；As shown in figure 4, new extreme ear structure can be welded parallel to pole piece edge direction.
It, can be by redesigning extreme ear structure in an optional example, and change welding position of the lug on pole piece
The mode put, to increase pole piece coating area area, so as to add the performance of active material on the basis of original battery structure
Amount achievees the purpose that improve battery energy density, also, method is simple, easily reach, has very big practicability.
As it can be seen that the present invention by changing extreme ear structure and its welding position on pole piece, increase pole piece coating area face
Product plays so as to increase capacity, improves battery energy density.
The processing and function realized by the lithium battery of the present embodiment essentially correspond to the reality of foregoing lug shown in Fig. 3
Apply example, principle and example, therefore not detailed part in the description of the present embodiment, the related description in previous embodiment is may refer to,
This will not be repeated here.
Through substantial amounts of verification experimental verification, technical solution using the present invention, by changing extreme ear structure and its on pole piece
Welding position, the afflux bulk area that the reserved needs sacrifice in solution tab welding area is very big cause what active position coating area was reduced
Problem increases pole piece coating area area, is played so as to increase capacity, improves battery energy density.
To sum up, it will be readily appreciated by those skilled in the art that on the premise of not conflicting, above-mentioned each advantageous manner can be certainly
It is combined, is superimposed by ground.
The foregoing is merely the embodiment of the present invention, are not intended to limit the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included within scope of the presently claimed invention.
Claims (10)
1. a kind of battery pole ear, which is characterized in that including：Roll over shape lug main body (3) and gel (2)；Wherein,
The folding shape lug main body (3), including：First connecting portion (31) and second connecting portion (32), the first connecting portion
(31) folding shape structure is formed between the second connecting portion (32)；
The gel (2) is installed on the first connecting portion (31).
2. lug according to claim 1, which is characterized in that the bending angle of the folding shape structure is 60 °~120 °.
3. lug according to claim 2, which is characterized in that the bending angle is 90 °, the first connecting portion (31)
For vertical portion, the second connecting portion (32) is horizontal part.
4. according to the lug described in one of claim 1-3, which is characterized in that the first connecting portion and the second connecting portion
Between junction be the internal bend portion in the folding shape structure, the internal bend portion is following with the gel (2)
The distance between edge is greater than or equal to 5mm.
5. according to the lug described in one of claim 1-4, which is characterized in that the folding shape lug main body (3) and the battery
Pole piece (4) installation when,
The first portion being connected in the first connecting portion (31) with the second connecting portion (32) and the second connecting portion
(32) it is respectively positioned in the collector Kong Bo areas of the pole piece (4)；
Second portion in the first connecting portion (31) in addition to the first portion stretches out the pole piece (4).
6. lug according to claim 5, which is characterized in that the pole piece, including：In anode pole piece, cathode pole piece
At least one.
7. lug according to claim 5 or 6, which is characterized in that the collector Kong Bo areas are arranged at the pole piece
(4) fringe region.
8. lug according to claim 7, which is characterized in that its in the pole piece (4) in addition to the fringe region
Its region is active material coating area.
9. a kind of battery, which is characterized in that including：Battery pole ear as described in claim 1-8 is any.
10. battery according to claim 9, which is characterized in that the quantity of the battery pole ear is more than one；And/or
The battery, including：At least one of lithium battery, sode cell, aluminum cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049756.5A CN108054334A (en) | 2017-10-31 | 2017-10-31 | A kind of battery pole ear and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049756.5A CN108054334A (en) | 2017-10-31 | 2017-10-31 | A kind of battery pole ear and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108054334A true CN108054334A (en) | 2018-05-18 |
Family
ID=62119952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711049756.5A Pending CN108054334A (en) | 2017-10-31 | 2017-10-31 | A kind of battery pole ear and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108054334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335984A (en) * | 2019-06-28 | 2019-10-15 | 宁德新能源科技有限公司 | A kind of dichotomous tab, electrode assembly and battery |
| CN114614069A (en) * | 2022-05-09 | 2022-06-10 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method thereof, battery and electric device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306572A (en) * | 1999-04-20 | 2000-11-02 | Nec Corp | Nonaqueous electrolyte secondary battery and manufacture thereof |
| CN202495510U (en) * | 2012-02-20 | 2012-10-17 | 宁德新能源科技有限公司 | Lithium-ion battery and tab structure thereof |
-
2017
- 2017-10-31 CN CN201711049756.5A patent/CN108054334A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306572A (en) * | 1999-04-20 | 2000-11-02 | Nec Corp | Nonaqueous electrolyte secondary battery and manufacture thereof |
| CN202495510U (en) * | 2012-02-20 | 2012-10-17 | 宁德新能源科技有限公司 | Lithium-ion battery and tab structure thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335984A (en) * | 2019-06-28 | 2019-10-15 | 宁德新能源科技有限公司 | A kind of dichotomous tab, electrode assembly and battery |
| CN114614069A (en) * | 2022-05-09 | 2022-06-10 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method thereof, battery and electric device |
| CN114614069B (en) * | 2022-05-09 | 2022-08-26 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method thereof, battery and electric device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180518 |
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| RJ01 | Rejection of invention patent application after publication |