CN206379431U - Takeup type pole group - Google Patents
Takeup type pole group Download PDFInfo
- Publication number
- CN206379431U CN206379431U CN201620989670.5U CN201620989670U CN206379431U CN 206379431 U CN206379431 U CN 206379431U CN 201620989670 U CN201620989670 U CN 201620989670U CN 206379431 U CN206379431 U CN 206379431U
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- Prior art keywords
- pole
- negative
- pole piece
- positive
- clear area
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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
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Abstract
The utility model discloses a kind of takeup type pole group, including positive plate and negative plate and barrier film；Positive plate includes anode pole piece and positive pole ear, negative plate includes cathode pole piece and negative lug, two sides are coated with pole powder up and down in addition to reserved clear area on described anode pole piece and cathode pole piece, described reserved clear area is at described pole piece lateral edges and corresponding with positive pole ear or negative lug size, and described positive pole ear or negative lug are accordingly welded on described reserved clear area；Described anode pole piece is accordingly covered with positive pole Protection glue band on the face of positive pole ear weld front and rear sides and contained so that positive pole is reserved into clear area in it, is screened therebetween with being covered with negative pole Protection glue band on negative electrode lug adjacent surface respectively so that negative pole is reserved into clear area on the adjacent anode pole piece of two correspondences of negative electrode lug.
Description
Technical field
The utility model is related to lithium ion battery preparing technical field, more particularly to a kind of takeup type pole group.
Background technology
At present, lithium ion battery is divided into circular battery, square battery, polymer battery.In its pole group structure
Lug is essentially all the collector in pole piece side（Copper foil or aluminium foil）On.Such structure exist with
Lower defect：
1, due to there is no pole powder above the collector of welding electrode ear, the empty paper tinsel belonged in sky paper tinsel, battery pole piece structure
Due to reducing the energy density of battery without painting pole powder.
2, on the other hand, for polymer battery, the pole on the hollow paper tinsel of pole piece structure and empty paper tinsel
Ear winding itself has an increased the thickness of whole pole group, then add the thickness of battery in the inside of pole group,
And polymer battery is very strict for the requirement of thickness, the battery thickened has underproof risk.
Utility model content
The utility model is for the limitation of mechanical structure present in existing design and the monitoring of each channel data and analysis module
Function is not enough, and provides a kind of takeup type pole group.
The utility model to achieve the above object, using following technical scheme：
A kind of takeup type pole group, including positive plate and negative plate and barrier film；
Positive plate includes anode pole piece and positive pole ear, and negative plate includes cathode pole piece and negative lug, described
Anode pole piece and cathode pole piece on two sides are coated with pole powder up and down in addition to reserved clear area, described is reserved
Clear area be located at it is at described pole piece lateral edges and corresponding with positive pole ear or negative lug size, described positive pole ear or
Negative lug is accordingly welded on described reserved clear area；
Described anode pole piece be accordingly covered with the face of positive pole ear weld front and rear sides positive pole Protection glue band with
Positive pole is reserved into clear area to contain in it, with negative electrode lug adjacent surface distinguishing on the adjacent anode pole piece of two correspondences of negative electrode lug
Negative pole Protection glue band is covered with to screen therebetween so that negative pole is reserved into clear area.
Described positive plate and the inner of negative plate are covered with end Protection glue band, described positive plate and negative plate respectively
End is correspondingly formed bending section and interfix.
Described positive plate and the inner end of negative plate are respectively formed as single coated side section, shape again after single coated side section doubling
Into bending section and interfix.
On the front and rear sides face that anode pole piece or cathode pole piece are correspondingly formed on before and after described reserved clear area.
Multiple front and rear corresponding coating clear areas are provided with described pole piece side.
The beneficial effects of the utility model are:Relative to prior art, the utility model can be in spy using foamed glue band
Determine to realize expansion curling at temperature and come off so that can internally welding electrode ear in pole piece so that freely design lug position and chi
Very little technique is thought of as possibility, and group hollow paper tinsel in pole is less so that the energy density of battery increases, and the thickness of battery has
It is thinned, reduces the internal resistance of battery, the advantages of improving cycle-index.For high-energy-density of new generation, high performance lithium from
Road has been paved in the research of sub- battery.
Brief description of the drawings
Fig. 1 show the overlooking the structure diagram of the present utility model for burying lug formula pole piece；
Fig. 2 show the cross section structure schematic diagram shown in Fig. 1；
Fig. 3 show foaming adhesive tape structure schematic diagram；
Fig. 4 show the schematic cross-section of foamed glue band；
Fig. 5 show another notch features schematic diagram；
Fig. 6 show pole group structure schematic diagram；
Fig. 7 show structural representation at anode ear；
Fig. 8 show structural representation at negative electrode lug.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description only to explain the utility model, is not used to limit the utility model.
As shown in Fig. 6-8, takeup type pole of the present utility model group includes positive plate 100 and negative plate 200 and barrier film
300；Positive plate 100 includes anode pole piece 110 and positive pole ear 120, and negative plate 200 includes cathode pole piece 210 and negative pole
Two sides are coated with pole powder up and down in addition to reserved clear area on lug 220, described anode pole piece and cathode pole piece, described
Reserved clear area is located at described pole piece lateral edges and positive pole pole corresponding with positive pole ear or negative lug size, described
Ear or negative lug are accordingly welded on described reserved clear area；
Described anode pole piece is accordingly covered with positive pole Protection glue band 130 on the face of positive pole ear weld front and rear sides
Contained so that positive pole is reserved into clear area in it, with negative electrode lug adjacent surface points on the adjacent anode pole piece of two correspondences of negative electrode lug
Negative pole Protection glue band 230 is not covered with to screen therebetween so that negative pole is reserved into clear area.Wherein, it is to avoid interior terminal spine in winding
Wear, described positive plate and the inner of negative plate are covered with end Protection glue band, described positive plate and negative plate end respectively
It is correspondingly formed bending section and interfix.Positive plate and negative plate are two-sided continuous coating, are existed without list powder and independent copper foil, volume
Around when, using double inserting structures, in positive plate insertion negative plate, in negative plate insertion positive plate, form symmetrical winding method.
Positive and negative lug buries lug technology using foamed glue band, is respectively present in the middle of positive/negative plate, it is not necessary to which single collector is welded
Connect, for traditional battery, reduce the thickness of collector, barrier film, lug, that is, the volume energy for adding battery is close
Degree.Meanwhile, the technology that lug is buried in centre reduces distance of the electric current by collector, can effectively reduce the internal resistance of battery.
Or described positive plate and the inner end of negative plate are respectively formed as single coated side section, and folding is re-formed after single coated side section doubling
Curved segment and interfix.There is single powder in such as negative plate, after negative pole list powder doubling in positive pole insertion negative plate, the winding side of formation
Formula, positive and negative lug buries lug technology using foamed glue band, is respectively present in the middle of positive/negative plate, it is not necessary to which single collector comes
Welding, for traditional battery, reduces the thickness of collector, barrier film, lug, that is, adds the volume energy of battery
Density.Meanwhile, the technology that lug is buried in centre reduces distance of the electric current by collector, can effectively reduce the interior of battery
Resistance.Simply in positive plate insertion negative plate, it is only necessary to paste Protection glue band in the insertion end of positive plate.
Because foamed glue band buries the technology of lug so that lug is present between the powder of pole, anode ear corresponding negative pole during winding
At powder, because the burr that soldering polar ear is produced easily punctures barrier film and causes both positive and negative polarity short circuit, positive pole Protection glue band is affixed on positive pole
At piece lug, whole anode ear and edge powder are covered, burr is obstructed, it is ensured that cell safety.Equally, at negative electrode lug, still
Can exist because the burr that soldering polar ear is produced easily punctures barrier film and causes the problem of both positive and negative polarity is short-circuit.Negative pole is taped negative pole
On the corresponding positive plate of ear.Because lithium ion is deviate from from positive pole during charging, moved to negative pole, if Protection glue band is affixed on negative
Pole, the lithium ion of abjection will form Xi Li areas in protection tape edge aggregation.Protection glue band is affixed on positive pole, lithium is may be prevented from
Ion is deviate from from positive pole, will not produce analysis lithium.
As shown in Fig. 3-5, foamed glue band includes adhesive tape basic unit 1, adhesive film 2 and the separation layer 3 set from top to bottom,
The adhesive tape basic unit being formed with described foamed glue band described in multiple cut through and the otch of adhesive film.Described foamed glue tape thickness
Degree is in 40-65mm, and the thickness of described adhesive tape basic unit is in 10-30mm.
The adhesive tape basic unit of foamed glue band of the present utility model and adhesive film for it is corresponding it is square paste on separation layer, utilize
The square shape cross cutting area of cross cutting, defines monolithic size, is easy to need pasting for high accuracy place, while every piece of single side
Shape sets otch in area, changes the stress of adhesive tape basic unit and adhesive film, makes it easier to crimp, and improves curling
Regularity, lifts crimpness, effectively improves the adaptability of automated production equipment.
Preferably, described otch is that in the straight line trace 4 that multiple lateral separations are arranged, specific design, can use a variety of
Form, the length of straight line trace is to be die cut the 70%-90% that section length corresponds to edge lengths as mentioned, or described straight line trace length
It is staggered successively.Or described straight line trace is more than the spacing of two straight line traces in one group for the spacing between one group, two groups two-by-two.
Certainly, described otch can also use oblique layout, the i.e. setting not parallel or vertical with the side of squared region, can equally play
The effect above.
Alternatively embodiment, described otch includes enclosing four straight line traces 5 being square, adjacent straight stria
Between keep interval.Using the square incision design for retaining interval at corner so that adhesive film is crimped to center, attachment is reduced
Point, controls remaining cohesive force, makes it easy to depart from.
Shown in Fig. 1 and Fig. 2, lug formula pole piece is buried made from above-mentioned preparation method, by taking anode ear 100 as an example, including collection
Pole powder 112 is coated with fluid, i.e. paillon foil 111 and lug 120, described paillon foil 111 in addition to reserved clear area to constitute
Collector, described reserved clear area is located at the described lateral edges of collector one and corresponding with the size of lug 120, described
Tab welding is in described reserved clear area.Simultaneously in the positive and negative patch Protection glue band 130 of lug to prevent burr.Described
Paillon foil is aluminium foil or copper foil, and described pole powder is corresponding lithium ion battery coating material, this similarly to the prior art, specifically herein
Not reinflated description.
Pole piece of the present utility model only stays part clear area corresponding with lug size and soldering polar ear on a current collector, makes
Obtain the hollow paper tinsel area of pole piece less so that the energy density of battery increases, the effective area increase of pole piece so that the thickness of battery
Degree is thinned, so that preparing high-energy-density, high performance future new era lithium ion battery has opened up new direction.
Specifically, it is correspondingly formed on before and after described reserved clear area on the front and rear sides face of collector, described
Pole piece side be provided with multiple coating clear areas.Wherein, for ease of the welding of pole piece, the described width ratio for coating clear area
Lug width wide 1-4mm, such as 3mm.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (5)
1. a kind of takeup type pole group, it is characterised in that including positive plate and negative plate and barrier film；Positive plate includes anode pole piece
And positive pole ear, negative plate includes removing on cathode pole piece and negative lug, described anode pole piece and cathode pole piece to blank in advance
Two sides are coated with pole powder up and down outside area, and described reserved clear area is located at described pole piece lateral edges and and positive pole ear
Or negative lug size is corresponding, described positive pole ear or negative lug are accordingly welded on described reserved clear area；Institute
The anode pole piece stated accordingly is covered with positive pole Protection glue band to reserve positive pole on the face of positive pole ear weld front and rear sides
Clear area is contained in it, with being covered with negative pole respectively on negative electrode lug adjacent surface on the adjacent anode pole piece of two correspondences of negative electrode lug
Protection glue band is screened therebetween so that negative pole is reserved into clear area.
2. the takeup type pole group as described in claim 1, it is characterised in that described positive plate and the inner difference of negative plate
End Protection glue band is covered with, described positive plate and negative plate end is correspondingly formed bending section and interfix.
3. the takeup type pole group as described in claim 1, it is characterised in that described positive plate and the inner end portion of negative plate
Be not formed as single coated side section, bending section and interfix are re-formed after single coated side section doubling.
4. the takeup type pole group as described in claim 1, it is characterised in that be correspondingly formed before and after described reserved clear area
On the front and rear sides face of anode pole piece or cathode pole piece.
5. the takeup type pole group as described in claim 1, it is characterised in that be provided with described pole piece side multiple front and rear
Corresponding coating clear area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620989670.5U CN206379431U (en) | 2016-08-29 | 2016-08-29 | Takeup type pole group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620989670.5U CN206379431U (en) | 2016-08-29 | 2016-08-29 | Takeup type pole group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206379431U true CN206379431U (en) | 2017-08-04 |
Family
ID=59401419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620989670.5U Active CN206379431U (en) | 2016-08-29 | 2016-08-29 | Takeup type pole group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206379431U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450494A (en) * | 2016-08-29 | 2017-02-22 | 天津力神电池股份有限公司 | Preparation method for tab-embedded type electrode plate, electrode plate and lithium ion battery |
| CN112635714A (en) * | 2020-12-15 | 2021-04-09 | 东莞维科电池有限公司 | Preparation method of pole piece, pole piece and lithium ion battery |
| WO2023102780A1 (en) * | 2021-12-08 | 2023-06-15 | 东莞新能源科技有限公司 | Electrochemical device and electronic device |
-
2016
- 2016-08-29 CN CN201620989670.5U patent/CN206379431U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450494A (en) * | 2016-08-29 | 2017-02-22 | 天津力神电池股份有限公司 | Preparation method for tab-embedded type electrode plate, electrode plate and lithium ion battery |
| CN106450494B (en) * | 2016-08-29 | 2024-02-02 | 天津聚元新能源科技有限公司 | Preparation method of embedded lug type pole piece, pole piece and lithium ion battery |
| CN112635714A (en) * | 2020-12-15 | 2021-04-09 | 东莞维科电池有限公司 | Preparation method of pole piece, pole piece and lithium ion battery |
| WO2023102780A1 (en) * | 2021-12-08 | 2023-06-15 | 东莞新能源科技有限公司 | Electrochemical device and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230202 Address after: 300000 No.38 Haitai South Road, Huayuan Industrial Zone (outside the ring), High-tech Zone, Binhai New Area, Tianjin Patentee after: Tianjin Juyuan New Energy Technology Co.,Ltd. Address before: 300384 Tianjin Xiqing District Binhai hi tech Industrial Development Zone (outer ring) 38 Haitai South Road Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd. |
|
| TR01 | Transfer of patent right |