CN207765561U - A kind of coiled lithium ion battery - Google Patents
A kind of coiled lithium ion battery Download PDFInfo
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- CN207765561U CN207765561U CN201721884641.3U CN201721884641U CN207765561U CN 207765561 U CN207765561 U CN 207765561U CN 201721884641 U CN201721884641 U CN 201721884641U CN 207765561 U CN207765561 U CN 207765561U
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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
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Abstract
A kind of coiled lithium ion battery, it is related to technical field of lithium ion, including shell and battery core, battery core includes positive plate, diaphragm and the negative plate of winding together, the surface of the positive plate or negative plate is equipped with first area and second area, first area is coated with electrode active material, the uncoated electrode active material of second area, the second area is arranged close to a side of positive plate or negative plate, and the second area of positive plate or negative plate connects into a positive water conservancy diversion end face or cathode water conservancy diversion end face in one end of battery core.The battery of the utility model has the characteristics that the internal resistance of cell is small, improves the resistance to high-power performance of battery.
Description
Technical field
The utility model is related to technical field of lithium ion, and in particular to a kind of coiled lithium ion battery.
Background technology
In existing cylindrical battery production technology, what pole piece was taken is the mode of intermittent coating, after pole piece cutting again
Conductive sheet is welded at interval as lug, not only increases the complexity, difficulty and cost of battery production technology, and due to
Lug area and limited amount cause the internal resistance of cell larger, resistance to high-power poor performance, i.e. battery high magnification charge/discharge characteristics
Difference, specific power is not high, using being very limited, is not suitable for using in the equipment such as electric vehicle.
Utility model content
To overcome the problems, such as that the internal resistance of cell existing for existing lithium ion battery is big, resistance to high-power poor performance, the utility model
A kind of coiled lithium ion battery is provided.
To achieve the above object, the technical solution of the utility model is：A kind of coiled lithium ion battery, including shell and
Battery core, battery core include winding positive plate, diaphragm and negative plate together, and the surface of the positive plate or negative plate is equipped with first
Region and second area, first area be coated with electrode active material, the uncoated electrode active material of second area, described second
Region is arranged close to a side of positive plate or negative plate, and the second area of positive plate or negative plate is connected in one end of battery core
At a positive water conservancy diversion end face or cathode water conservancy diversion end face.
Further, the surface of the positive plate and negative plate is equipped with the first area and second area, positive plate
Second area connect into a positive water conservancy diversion end face in the positive terminal of battery core, the negative pole end of the second area of negative plate in battery core
Connect into a cathode water conservancy diversion end face.
An anode collection disk is connected on the anode water conservancy diversion end face.
The anode collection disk is connect with the block of the shell or shell positive terminal.
The block of the shell positive terminal is equipped with Positive Poles.
A negative pole currect collecting disk is connected on cathode water conservancy diversion end face.
The negative pole currect collecting disk is connect with the block of the shell or shell negative pole end.
The block of the shell negative pole end is equipped with cathode pole.
The second area of the positive plate or negative plate extends to the both ends of positive plate or negative plate.
The anode water conservancy diversion end face or cathode water conservancy diversion end face are a plane.
Advantageous effect：
The positive plate or negative plate of the battery core of the utility model are in electrode coated active material, on the surface thereof close to it
The place of one side reserves a region and is not coated by electrode active material, after the winding for completing battery core, passes through trimming
By the region shaping compacting of positive plate or the uncoated electrode active material of negative plate, a positive water conservancy diversion to link together is formed
End face or cathode water conservancy diversion end face.When the anode water conservancy diversion end face or cathode water conservancy diversion end face are connect with affluxs parts such as current collecting plates, increase
The positive plate of battery core or the contact area of the affluxs part such as negative plate and current collecting plates advantageously reduce the internal resistance of battery, improve electricity
The resistance to high-power performance in pond.And the simple production process of the battery of the utility model, manufacturing cost is low, is suitable for scale metaplasia
Production.
Description of the drawings
Fig. 1 is the positive plate of the battery core of the utility model or the structural schematic diagram of negative plate；
Fig. 2 is that the battery core of the utility model is positive in sectional view when not forming positive water conservancy diversion end face and cathode water conservancy diversion end face
The structural schematic diagram of piece and negative plate；
Fig. 3 is the structural schematic diagram of the positive water conservancy diversion end face and cathode water conservancy diversion end face of the battery core of the utility model；
Fig. 4 be battery core stereogram in positive water conservancy diversion end face and cathode water conservancy diversion end face structural schematic diagram；
Fig. 5 is the structural schematic diagram of the battery of the utility model；
In figure label for：1, positive plate, 2, negative plate, 3, positive water conservancy diversion end face, 4, cathode water conservancy diversion end face, 5, positive pole
Column, 6, positive block, 7, anode collection disk, 8, shell, 9, cathode cover cap, 10, cathode pole, 11, first area, 12, second
Region.
Specific implementation mode
Below in conjunction with the embodiments of the present invention attached drawing, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those skilled in the art are obtained without making creative work
The other embodiments obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.1~4, a kind of coiled lithium ion battery, including shell 8 and battery core, battery core include winding together
Positive plate 1, diaphragm and negative plate 2, the surface of the positive plate 1 is divided into first area 11 and second area 12, first area
11 are coated with electrode active material, 12 uncoated electrode active material of second area.The second area 12 is from 1 surface of positive plate
Second side to the first side on 1 surface of positive plate extend, the second side is oppositely arranged with first side；Described first
Region extends from the first side on 1 surface of positive plate to the second side on 1 surface of positive plate, the first area 11 and the secondth area
Domain 12 connects.The second area 12 of the positive plate 1 connects into a positive water conservancy diversion end face 3 in one end of battery core.The anode
Water conservancy diversion end face 3 is that the second area 12 is compacted to the shape that links together by trimming after battery core completes winding
At.A 3 preferably plane of the anode water conservancy diversion end face, planar structure are conducive to increase the affluxs such as positive plate 1 and current collecting plates
The contact area of part, to the internal resistance conducive to reduction battery.
The first area 11 and second area 12 extend to the other end of positive plate 1 from one end of positive plate 1, best
It is to extend to its other end from one end on 1 length direction of positive plate, in this way after the completion of electric core winding, positive plate 1 is uncoated
The second area 12 of electrode active material is located at one end of battery core, and follow-up shaped process forms the positive water conservancy diversion end face 3.
An anode collection disk 7, the bottom surface or outer of anode collection disk 7 and the shell 8 are connected on the anode water conservancy diversion end face 3
The positive block 6 of 8 positive terminal of shell setting connects.The tubular of one end open or both ends open may be used in the shell 8 of the battery
Structure, open end are closed using block.Wherein, the positive water conservancy diversion end face 3 is to use to be welded to connect with anode collection disk 7,
It is also to use to be welded to connect between the positive block 6 of bottom surface or the shell 8 positive terminal setting of anode collection disk 7 and the shell 8.
Ultrasonic bond, Laser Welding, stored energy welding or exchange weldering etc. can be used in the welding manner.For ease of between battery and external current conductor
Connection, the anode block 6 are equipped with Positive Poles 5.
Another embodiment as the utility model.Knot of the structure of the negative plate 2 of the battery core with above-mentioned positive plate 1
Structure, on the surface of negative plate 2, the setting first area 11 and second area 12, first area 11 are coated with electrode activity material
Expect, 12 uncoated electrode active material of second area, the set-up mode of first area 11 and second area 12 is the same as just on negative plate 2
The second area 12 of pole piece 1, negative plate 2 connects into a cathode water conservancy diversion end face 4 in the negative pole end of battery core.Cathode water conservancy diversion end
Face 4 is preferably a plane, and planar structure is conducive to increase the contact area of the affluxs part such as negative plate 2 and current collecting plates, to profit
In the internal resistance for reducing battery.
A negative pole currect collecting disk, bottom surface or shell of the negative pole currect collecting disk with the shell 8 are connected on cathode water conservancy diversion end face 4
The cathode cover cap 9 of 8 negative pole ends setting connects.The tubular knot of one end open or both ends open may be used in the shell 8 of the battery
Structure, open end are closed using block.Wherein, it is to use to be welded to connect between cathode water conservancy diversion end face 4 and negative pole currect collecting disk,
It is also to use to be welded to connect between the cathode cover cap 9 of bottom surface or the shell 8 negative pole end setting of negative pole currect collecting disk and the shell 8.
Ultrasonic bond, Laser Welding, stored energy welding or exchange weldering etc. can be used in the welding manner.For ease of between battery and external current conductor
Connection, the cathode cover cap 9 are equipped with cathode pole 10.
As the utility model more preferably another embodiment.The positive plate 1 of the battery core and the surface of negative plate 2 are equipped with
The first area 11 and second area 12, the second area 12 of positive plate 1 connect into an anode in the positive terminal of battery core and lead
End face 3 is flowed, the second area 12 of negative plate 2 connects into a cathode water conservancy diversion end face 4 in the negative pole end of battery core.Other structures are the same
Two embodiments.
In the above various embodiments, the positive plate of the battery core includes a plus plate current-collecting body aluminium foil, in plus plate current-collecting body aluminium foil
Surface be coated with positive electrode active materials, form the first area.It is 93: 2: 1 that mass ratio, which is usually used, in positive electrode active materials:
1: 3 cobalt nickel ion doped, the mixed slurry of Super P, KS6, CNT, PVDF.Plus plate current-collecting body aluminium foil is in coating positive-active material
After material, through the processes such as drying, roll-in be made thick 140 μm, width 100mm (the part width of uncoated positive active slurry is 15mm),
The positive plate of long 5400mm.The negative plate of the battery core includes a negative current collector copper foil, modified natural graphite, conductive acetylene
The ratio of black, polyvinylidene fluoride (PVDF) in mass ratio 93: 3: 4 is mixed and made into negative electrode active slurry, is coated on negative pole currect collecting
On body copper foil, it is made through processes such as drying, roll-ins 105 μm thick, (the part width of uncoated negative electrode active slurry is by wide 106mm
15mm), the negative plate of long 5700mm.Then, battery core, battery core warp are wound into according to the sequence of diaphragm, negative plate, diaphragm, positive plate
Shaping welds current collecting plates, enters the assembling that the processes such as shell, suit block, slot rolling, sealing complete battery.Lithium hexafluoro phosphate is added
(LiPF6) or propene carbonate (PC) and ethylene carbonate (EC) composition electrolyte, through chemical conversion activate, complete battery
Whole preparation process.The water conservancy diversion area of battery is big, and ohmic internal resistance and dynamic electric resistor are low, and battery has higher specific power and compares energy
Amount, battery specific energy reaches 80Wh/kg, and specific power reaches 3000W/kg, have long lifespan (cycle life is more than 2000 times), at
The features such as this is low, non-maintaining.It can be as energy storage device and all kinds of substations, the hospital of various equipments and the vehicles
Operating room, space flight communications service, the uninterruptible power supply of radio communication, emergency power supply etc..
Claims (10)
1. a kind of coiled lithium ion battery, including shell and battery core, battery core includes winding positive plate together, diaphragm and negative
Pole piece, it is characterised in that：The surface of the positive plate or negative plate is equipped with first area and second area, first area are coated with
Electrode active material, the uncoated electrode active material of second area, one close to positive plate or negative plate of the second area
Side is arranged, and the second area of positive plate or negative plate connects into a positive water conservancy diversion end face or cathode water conservancy diversion in one end of battery core
End face.
2. a kind of coiled lithium ion battery as described in claim 1, it is characterised in that：The table of the positive plate and negative plate
Face is equipped with the first area and second area, and the second area of positive plate connects into an anode in the positive terminal of battery core and leads
End face is flowed, the second area of negative plate connects into a cathode water conservancy diversion end face in the negative pole end of battery core.
3. a kind of coiled lithium ion battery as described in claim 1, it is characterised in that：It is connected on the anode water conservancy diversion end face
One anode collection disk.
4. a kind of coiled lithium ion battery as claimed in claim 3, it is characterised in that：The anode collection disk with it is described outer
The block of shell or shell positive terminal connects.
5. a kind of coiled lithium ion battery as claimed in claim 4, it is characterised in that：In the block of the shell positive terminal
Equipped with Positive Poles.
6. a kind of coiled lithium ion battery as described in claim 1, it is characterised in that：The cathode water conservancy diversion connects on end face
One negative pole currect collecting disk.
7. a kind of coiled lithium ion battery as claimed in claim 6, it is characterised in that：The negative pole currect collecting disk with it is described outer
The block of shell or shell negative pole end connects.
8. a kind of coiled lithium ion battery as claimed in claim 7, it is characterised in that：In the block of the shell negative pole end
Equipped with cathode pole.
9. a kind of coiled lithium ion battery as described in claim 1, it is characterised in that：The of the positive plate or negative plate
Two regions extend to the both ends of positive plate or negative plate.
10. a kind of coiled lithium ion battery as described in claim 1, it is characterised in that：The anode water conservancy diversion end face is negative
Pole water conservancy diversion end face is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721884641.3U CN207765561U (en) | 2017-12-28 | 2017-12-28 | A kind of coiled lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721884641.3U CN207765561U (en) | 2017-12-28 | 2017-12-28 | A kind of coiled lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207765561U true CN207765561U (en) | 2018-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721884641.3U Active CN207765561U (en) | 2017-12-28 | 2017-12-28 | A kind of coiled lithium ion battery |
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| Country | Link |
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| CN (1) | CN207765561U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993491A (en) * | 2021-02-05 | 2021-06-18 | 刘昌国 | Lithium battery, battery cell and assembly method |
-
2017
- 2017-12-28 CN CN201721884641.3U patent/CN207765561U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993491A (en) * | 2021-02-05 | 2021-06-18 | 刘昌国 | Lithium battery, battery cell and assembly method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220112 Address after: 2201, building 1, COFCO Chuangxin R & D center, 69 Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Chuangpus (Shenzhen) New Energy Technology Co.,Ltd. Address before: 518000 floor 3, building F2, No. 1001, Zhongshan Garden Road, Nanshan District, Shenzhen, Guangdong Patentee before: SHENZHEN NEW HENGYE BATTERY TECHNOLOGY Co.,Ltd. |