CN208478465U - A kind of full tab positive plate and winding battery core - Google Patents
A kind of full tab positive plate and winding battery core Download PDFInfo
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- CN208478465U CN208478465U CN201821081100.1U CN201821081100U CN208478465U CN 208478465 U CN208478465 U CN 208478465U CN 201821081100 U CN201821081100 U CN 201821081100U CN 208478465 U CN208478465 U CN 208478465U
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- Prior art keywords
- positive plate
- battery core
- full tab
- anode
- kong
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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
The full tab positive plate that the utility model discloses a kind of for improving lithium ion battery is rolled up and around battery core.The full tab anode, the anode area Kong Bo is equipped with the hole slot structure for reducing its rigidity.The utility model opens up hole slot structure by the area Kong Bo in positive plate, effectively releases the stress accumulated in nipping process, improves full tab positive plate side arc-shaped deformation, substantially increases the yields of full tab winding battery core technique；The hole slot structure of anode increases the circulation passage of battery core electrolyte, improves battery core high rate performance.
Description
Technical field
The utility model relates to lithium ion battery production field more particularly to a kind of full tab anodes for improving winding battery core
Piece and winding battery core.
Background technique
Core component of the battery core as battery, the mode for generalling use lamination and winding are assembled.Wherein, winding method
Because having the characteristics that simple process, assembly efficiency are high, being easy to automate, it is widely adopted.Inside battery design structure is common
There are monopole ear, multi pole ears, full tab.As shown in Figure 1, positive plate is formed in aluminium foil surface coating anode sizing agent 12, in copper foil table
Face is coated with negative electrode slurry 32 and forms negative electrode tab.Positive plate and the negative electrode tab slitting after roller rolls respectively, obtained left side has
The positive plate 1 in the positive area Kong Bo 11 and right side have the negative electrode tab 3 in the area cathode Kong Bo 31.Incorporated by reference to shown in Fig. 2, by positive plate 1
The positive area Kong Bo 11 and 31 points of the area the cathode Kong Bo two sides of negative electrode tab 3 put, then be arranged between positive plate 1 and negative electrode tab 3
One diaphragm 2, stacking winding form battery core, and left side forms the full tab anode of battery core, and right side forms the full tab cathode of battery core.Entirely
Extreme ear structure design is fairly simple for multi pole ears, lower to equipment requirement.The fever of full tab battery core pole piece is small, can
To realize high power density.But such battery core has following two: (1) elongation that full tab positive plate rolls is higher,
And right side film area is thick, the left side area anode Kong Bo 11 is thin, during roll-in, thick right side film area is easy to be rolled longer,
And film area tension can not edge release, the positive area Kong Bo in left side then rolls smaller, therefore the extensible extent of the left and right sides that extends
Imbalance causes 1 side of positive plate arc-shaped, and the battery core after eventually leading to winding forms helicoidal structure, and negative cover does not live just
Pole, yields are lower.(2), the weldering print between tab and switching piece is also easy to close the electrolyte circulation channel in the region.
Therefore, how to overcome full tab electric core winding helicoidal structure occur, cause yields lower and the electricity of battery core
It is industry urgent problem to be solved that solution liquid stream, which leads to unsmooth defect,.
Utility model content
There is helicoidal structure to solve existing electric core winding in the utility model, thus yields is lower and tab with
The unsmooth technical problem of electrolyte circulation between switching piece proposes a kind of higher promotion of full tab winding non-defective unit and battery core electricity
Solve the circulation of the liquid unobstructed full tab positive plate of improvement and winding battery core.
The utility model proposes a kind of full tab positive plate, the anode area Kong Bo be equipped with reduce its rigidity structure.
Preferably, the structure for reducing the positive area Kong Bo rigidity is through-hole.
Wherein, the through-hole is at least one kind of the geometric figures such as circular hole, elliptical aperture or polygonal hole.
Preferably, the structure can also be the open slot being arranged along the anode area the Kong Bo longitudinal gap.
Wherein, after being wound into battery core, the empty foil area overlapping of anode between the adjacent open slot forms single anode
Ear.
Alternatively, the empty foil area overlapping of anode between the adjacent open slot forms multiple anodes after being wound into battery core
Ear.
The utility model also proposed a kind of winding battery core with the full tab positive plate.
The utility model reduces the rigidity of the area positive plate Kong Bo material by opening up hole slot structure in the area positive plate Kong Bo,
The stress accumulated in nipping process is effectively released, balance positive plate two sides rolls deformation, overcomes positive plate side
The defect for generating arc, combines the advantage of multi pole ears and full tab, substantially increases the yields of winding battery core technique.Separately
Outside, the positive area Kong Bo providing holes slot structure increases the circulation passage of battery core electrolyte, improves battery core high rate performance.
Detailed description of the invention
Fig. 1 is the schematic diagram of the full tab positive plate of existing winding battery core, diaphragm and full tab negative electrode tab；
Fig. 2 is positive plate, diaphragm and negative electrode tab the stacking schematic diagram for winding battery core；
Fig. 3, Fig. 4 are respectively the schematic diagram of full the tab positive plate first embodiment and second embodiment of the utility model；
Fig. 5 is the winding battery core schematic diagram being made by full tab positive plate first embodiment；
Fig. 6, Fig. 7 are respectively the winding battery core for two kinds of anode structures being made by full tab positive plate second embodiment
Schematic diagram.
Specific embodiment
The utility model is further described below with reference to embodiment and attached drawing.
As shown in figure 3, being the first embodiment of full tab positive plate provided by the utility model, the full tab positive plate 1
It include: aluminium foil, the anode sizing agent 12 being coated on the right side of its surface, left side is the anode area Kong Bo 11.The area anode Kong Bo 11 is equipped with
Reduce the structure of its rigidity.In the present embodiment, the structure for reducing positive 11 material stiffness of the area Kong Bo is through-hole 111.Root
According to needs, can with the hole slot of the various geometric figures of punching press, e.g., one kind of the geometric figures such as circular hole, elliptical aperture or polygonal hole or
The combination of any several figures.As shown in figure 4, be the second embodiment of full tab positive plate, different from the first embodiment,
The structure for reducing positive 11 material stiffness of the area Kong Bo is the open slot 113 being arranged along positive 11 longitudinal gap of the area Kong Bo.
In the present embodiment, longitudinal uniform intervals of the open slot 113 along the positive area Kong Bo 11 are arranged.
The utility model proposes winding battery core production method, steps are as follows (incorporated by reference to Fig. 1 ~ Fig. 4):
Step 1: first configured anode sizing agent being coated on aluminium foil, positive plate 1 is made, cathode feed liquid is coated on copper
Negative electrode tab 2 is made on foil, then positive and negative plate centering is subjected to slitting.
Step 2: the structure of its rigidity is lowered in production in the area positive plate Kong Bo 11 of the positive plate after slitting.According to need
It wants, the hole slot of various geometric figures, e.g., circular hole, elliptical aperture or polygonal hole can be stamped out in the left side area positive plate Kong Bo 11
One kind of equal geometric figures or the various combination of any several figures.It can also stamp out along the longitudinal gap in the positive area Kong Bo 11
Open slot 113.
Step 3: roll-in will be carried out equipped with the negative electrode tab 2 after the positive plate 1 and the slitting for lowering its stiffness structure；
Step 4: resulting negative electrode tab 3, diaphragm 2 and positive plate 1 stack gradually after finally being made by step 3, make simultaneously
The area positive plate Kong Bo 11 is obtained towards left side, the area cathode Kong Bo 31 towards right winding, subsequent technique is completed and battery core is made.
After winding battery core, as shown in figure 5, the left side area anode Kong Bo 11 forms the full tab anode 14 for having through-hole 111,
The right side area cathode Kong Bo 31 forms full tab cathode 33；As shown in fig. 6, the positive area Kong Bo between left side adjacent apertures slot 113
Single anode ear 112 is overlapped to form, the right side area cathode Kong Bo 31 forms full tab cathode 33；Spacing, such as Fig. 7 can also have been set
It is shown, so that the empty foil area overlapping of anode between adjacent apertures slot 113 forms multiple anode ears 114, the right side area cathode Kong Bo 31
Form full tab cathode 33.
The utility model is effectively released and is accumulated in nipping process by opening up hole slot structure in the area positive plate Kong Bo
Stress improves positive plate side arc-shaped deformation, substantially increases the yields of winding battery core technique；The hole slot structure of anode increases
The big circulation passage of battery core electrolyte, improves battery core high rate performance.
Embodiment described above is primarily to illustrate the creating conception of the utility model, it is noted that for this
For the those of ordinary skill in field, without departing from the concept of the premise utility, several deformations can also be made and changed
Into these are all within the protection scope of the present invention.
Claims (7)
1. a kind of full tab positive plate, which is characterized in that the positive area Kong Bo (11) of the full tab positive plate (1), which is equipped with, to reduce
The structure of its rigidity.
2. full tab positive plate as described in claim 1, which is characterized in that the structure is through-hole (111).
3. full tab positive plate as claimed in claim 2, which is characterized in that the through-hole (111) is at least circular hole, ellipse
One kind of hole or polygonal hole.
4. full tab positive plate as described in claim 1, which is characterized in that the structure is along the anode area Kong Bo
(11) open slot (113) of longitudinal gap setting.
5. full tab positive plate as claimed in claim 4, which is characterized in that after winding battery core, the adjacent open slot
(113) the positive area Kong Bo (11) between overlaps to form single anode ear.
6. full tab positive plate as claimed in claim 4, which is characterized in that after winding battery core, the adjacent open slot
(113) the positive area Kong Bo (11) between overlaps to form multiple anode ears.
7. a kind of winding battery core, which is characterized in that have full tab positive plate as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821081100.1U CN208478465U (en) | 2018-07-09 | 2018-07-09 | A kind of full tab positive plate and winding battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821081100.1U CN208478465U (en) | 2018-07-09 | 2018-07-09 | A kind of full tab positive plate and winding battery core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208478465U true CN208478465U (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821081100.1U Active CN208478465U (en) | 2018-07-09 | 2018-07-09 | A kind of full tab positive plate and winding battery core |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165145A (en) * | 2019-05-13 | 2019-08-23 | 无锡先导智能装备股份有限公司 | Pole piece pretreatment of base material method and pole piece substrate |
-
2018
- 2018-07-09 CN CN201821081100.1U patent/CN208478465U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165145A (en) * | 2019-05-13 | 2019-08-23 | 无锡先导智能装备股份有限公司 | Pole piece pretreatment of base material method and pole piece substrate |
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