CN205542997U - Polyvinylidene fluoride coating non -woven fabrics diaphragm paper polymer lithium ion secondary cell - Google Patents
Polyvinylidene fluoride coating non -woven fabrics diaphragm paper polymer lithium ion secondary cell Download PDFInfo
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- CN205542997U CN205542997U CN201521067314.XU CN201521067314U CN205542997U CN 205542997 U CN205542997 U CN 205542997U CN 201521067314 U CN201521067314 U CN 201521067314U CN 205542997 U CN205542997 U CN 205542997U
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- battery
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- polyvinylidene fluoride
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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 utility model relates to a polyvinylidene fluoride coating non -woven fabrics diaphragm paper polymer lithium ion secondary cell. Including positive plate (7), negative pole piece (10), polyvinylidene fluoride coating non -woven fabrics diaphragm paper (21), colloidal electrolyte and casing, positive plate (7), negative pole piece (10) are range upon range of arranges in polyvinylidene fluoride coating non -woven fabrics diaphragm paper 's (21) two sides, positive plate (7) after range upon range of, polyvinylidene fluoride coating non -woven fabrics diaphragm paper (21), negative pole piece (10) are convoluteed and are formed battery core (13), the battery core pours into into behind the electrolyte, the menstruation heat polymerization makes electrolyte form colloidal electrolyte, roll up in -core positive plate (7), paste in polyvinylidene fluoride coating non -woven fabrics diaphragm paper (21) both sides negative pole piece (10), the electricity core forms the polymer electric core of non - liquid state, the battery core, colloidal electrolyte is located the casing. Reduce the internal resistance of battery core, solved the low and big problem of pole piece corner area of lamination production efficiency, reduced battery heat production amount, improved the security of battery, increase of service life.
Description
Technical field
This utility model relates to a kind of lithium rechargeable battery, particularly to a kind of Kynoar (PVDF) coating nonwoven
Cloth diaphragm paper polymer lithium ion secondary battery.
Background technology
In recent years, lithium rechargeable battery is as high power heavy-current discharge battery, and application is more and more extensive, to battery
Properties requires more and more higher.Currently known lithium rechargeable battery universal architecture has: winding-structure and lamination,
Diaphragm paper is polypropylene, polyethylene material.
Polypropylene, polyethylene material coated separator paper, porosity is about 40%, and aperture is in 0.01 0.15um, impedance
Greatly, and it is heated and easily shrinks, when high temperature 135 165 DEG C, easy contraction distortion, rupture, cause battery failure.
The battery production efficiency of tradition winding-structure is high, and pole piece corner area is little, it is easy to mass production and pole piece edge
Burr, effective control of shedding；The charging, discharging electric batteries multiplying power of tradition lamination is higher, and quantity of heat production is little, adapts under certain limit
High power discharge under the conditions of use；But pole piece corner area is relatively big, and production efficiency is relatively low, is unfavorable for mass production
With pole piece burrs on edges, the control of shedding.
Along with the expansion in market, high power density power equipment is the most increasing to the demand of lithium rechargeable battery, as
All there is the biggest demand in the markets such as electric motor car power supply, electronic class instrument, model plane.Require battery at-20 DEG C～+60 DEG C, (15
30) under C discharge-rate, remaining to normally work, its conventional lithium ion secondary cell has the defect being difficult to go beyond.It is mainly reflected in:
1) when high temperature 135 165 DEG C, diaphragm paper compression deformation, rupture, cause battery failure or form safety problem；
2) discharge-rate is little, is generally suitable for the continuous discharge of the following electric current of room temperature 3C, it is impossible to meet high-power equipment work
Required power requirement when making；
3) internal resistance of cell is big, and such as 10Ah battery 1KHz AC impedance is generally at more than 3M Ω；
4) traditional winding-structure battery multiplying power is poor, and lamination battery production is inefficient, be not easy to burrs on edges,
Effective control of shedding；
5), under the conditions of the charge and discharge of battery big electric current, temperature rise is higher, has a strong impact on the cycle life of battery.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of production efficiency height, discharge-rate height, pole piece corner
Kynoar (PVDF) the coating non-woven fabrics diaphragm paper polymer lithium ion secondary battery that area is little.
This utility model solves the technical scheme of the problems referred to above:
A kind of polyvinylidene fluoride coating non-woven fabrics diaphragm paper polymer lithium ion secondary battery, including positive plate, negative plate,
Polyvinylidene fluoride coating non-woven fabrics diaphragm paper, colloidal electrolyte and housing, described positive plate, negative plate stacking are arranged in poly-inclined fluorine
The two sides of vinyl coating non-woven fabrics diaphragm paper, the positive plate after stacking, polyvinylidene fluoride coating non-woven fabrics diaphragm paper, negative plate volume
Around forming battery, after described battery injects electrolyte, electrolyte is made to form colloidal electrolyte, positive pole in core through thermal polymerization
Sheet, negative plate are pasted on polyvinylidene fluoride coating non-woven fabrics diaphragm paper both sides, and battery core forms the polymer battery core of non-liquid, described
Battery, colloidal electrolyte are positioned at housing.
Described positive plate is provided with the anode ear of Unequal distance, and anode ear has the hole for checking winding regularity, its hole
Footpath is ￠ 1.2mm, described anode ear parallel connection constitute battery anode ear, aluminium pole ears is welded on battery anode ear, aluminium pole ears with
Polyimides gummed paper is posted in battery anode ear junction, and negative plate is provided with the negative electrode lug of Unequal distance, negative electrode lug has for
The hole of inspection winding regularity, its aperture is ￠ 1.2mm, and described negative electrode lug parallel connection constitutes battery negative electrode lug, copper nickel plating lug
Being welded on battery negative electrode lug, polyimides gummed paper is posted in copper nickel plating lug and battery negative electrode lug junction, and battery two ends are equal
A pair battery anode ear, battery negative electrode lug is had to draw.
Polyvinylidene fluoride coating non-woven fabrics diaphragm paper nonwoven fabric base layer thickness is (28-32) um, its polyvinylidene fluoride coating
Even application is in the both sides of non-woven substrate, and polyvinylidene fluoride coating thickness is (6-20) um, and nonwoven fabric base layer porosity is
(60-75) %, aperture is the high porosity cellulose polyvinylidene fluoride coating non-woven fabrics diaphragm paper of (0.12-0.28) um.
The beneficial effects of the utility model are: battery of the present utility model is by positive plate, Kynoar (PVDF)
Wind after coating non-woven fabrics diaphragm paper, negative plate stacking and form, and in parallel by lug, reduce the internal resistance of battery, solve
The problem that lamination production efficiency is low and pole piece corner area is big, decreases the quantity of heat production of battery simultaneously, and battery is rolled up
After forming battery injection electrolyte, making electrolyte form colloidal electrolyte through thermal polymerization, in core, positive plate, negative plate glue
Being affixed on Kynoar (PVDF) coating non-woven fabrics diaphragm paper both sides, battery core forms the polymer battery core of non-liquid, improves electricity
The safety in pond, extends the service life of battery.
Accompanying drawing explanation
Fig. 1 is this utility model Kynoar (PVDF) coating non-woven fabrics diaphragm paper Structure of cross section schematic diagram；
Fig. 2 is structural representation after this utility model positive-pole base material coating active substance；
Fig. 3 is structural representation after this utility model base material of cathode coating active substance；
Fig. 4 is the structural representation of this utility model positive plate；
Fig. 5 is the structural representation of this utility model negative plate；
Fig. 6 is the structural representation of this utility model battery；
Fig. 7 is the structural representation of battery after this utility model soldering polar ear；
Fig. 8 is the outside schematic diagram of polymer lithium ion secondary battery of the present utility model.
In figure: non-woven fabrics 1, polyvinylidene fluoride coating 2, positive-pole base material 3, positive active material 4, base material of cathode 5, negative
Hole 8, pole active substance 6, positive plate 7, anode pole piece lug location, anode ear 9, negative plate 10, hole, cathode pole piece lug location
11, negative electrode lug 12, battery 13, battery anode ear 14, aluminium pole ears 15, polyimides gummed paper 16, battery negative electrode lug 17, copper
Nickel plating lug 18, winding ending gummed paper 19, copper nickel plating tab 20, polyvinylidene fluoride coating non-woven fabrics diaphragm paper 21.
Detailed description of the invention
With embodiment, this utility model is further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, Kynoar (PVDF) coating non-woven fabrics diaphragm paper 21 includes non-woven fabrics 1, Kynoar
(PVDF) coating 2, described Kynoar (PVDF) coating non-woven fabrics diaphragm paper 21 is that Kynoar (PVDF) coating 2 is uniform
The two sides being coated in non-woven fabrics 1.
Shown in Fig. 2, Fig. 3, positive-pole base material 3 is coated with uniformly by certain size and applies positive active material 4, base material of cathode 5
On be coated with uniformly by certain size and to apply negative electrode active material 6.
As shown in Figure 4, Figure 5, positive plate 7 upper and lower end is equipped with the anode ear 9 of Unequal distance, and anode ear 9 is provided with for examining
Looking through the files around the hole 8, anode pole piece lug location of degree of registration, negative plate 10 upper and lower end is equipped with the negative electrode lug 12 of Unequal distance, negative pole
Ear 12 is provided with the hole 11, cathode pole piece lug location for checking winding degree of registration.
As shown in Figure 6, figure includes positive plate 7, anode ear 9, negative plate 10, negative electrode lug 12, Kynoar (PVDF)
Coating non-woven fabrics diaphragm paper 21, described positive plate 7, negative plate 10 stacking be arranged in Kynoar (PVDF) coating non-woven fabrics every
The two sides of film paper 21, the positive plate 7 after stacking, Kynoar (PVDF) coating non-woven fabrics diaphragm paper 21, negative plate 10 wind
Forming battery 13, hole 8, described anode pole piece lug location, hole 11, cathode pole piece lug location is used for checking that battery 13 winds
Regularity, battery 13 encapsulation is injected after electrolyte, makes electrolyte form colloidal electrolyte, positive plate in core through thermal polymerization
7, negative plate 10 is pasted on Kynoar (PVDF) coating non-woven fabrics diaphragm paper 21 both sides, forms the electrostrictive polymer of non-liquid
Core.
As it is shown in fig. 7, battery anode ear 14 is formed in parallel by positive plate lug 9, battery negative electrode lug 17 is by negative plate
Lug 12 is formed in parallel, and posts winding ending gummed paper 16, described battery anode ear 14 welds at the winding ending of battery 13
Being connected to aluminium pole ears 15, polyimides gummed paper 16, described battery negative pole are posted in battery anode ear 14 and aluminium pole ears 15 junction
Being welded with copper nickel plating lug 18 on ear 17, polyimides gummed paper is posted in battery negative electrode lug 17 and copper nickel plating lug 18 junction
16, the upper and lower two ends of battery are all welded with a pair bronze medal nickel plating lug 18, aluminium pole ears 15, and copper nickel plating lug 18 has welded copper nickel plating pole
Ear glue 20, posts polyimides gummed paper 16.
As shown in Figure 8, the battery 13 having welded lug is positioned at aluminum-plastic composite membrane housing, and plastic-aluminum combined putamina housing is noted
After entering electrolyte, making electrolyte form the non-liquid polymer battery core of colloidal electrolyte through thermal polymerization, battery core two ends all have a pair
Aluminium pole ears 15, copper nickel plating lug 18.
Claims (3)
1. a polyvinylidene fluoride coating non-woven fabrics diaphragm paper polymer lithium ion secondary battery, including positive plate (7), negative plate
(10), polyvinylidene fluoride coating non-woven fabrics diaphragm paper (21), colloidal electrolyte and housing, it is characterised in that: described positive plate
(7), negative plate (10) stacking is arranged in the two sides of polyvinylidene fluoride coating non-woven fabrics diaphragm paper (21), the positive plate after stacking
(7), polyvinylidene fluoride coating non-woven fabrics diaphragm paper (21), negative plate (10) winding forms battery (13), described battery note
After entering electrolyte, making electrolyte form colloidal electrolyte through thermal polymerization, in core, positive plate (7), negative plate (10) are pasted on poly-
Vinylidene coating non-woven fabrics diaphragm paper (21) both sides, battery core forms the polymer battery core of non-liquid, described battery, colloid electricity
Solve matter and be positioned at housing.
2. polyvinylidene fluoride coating non-woven fabrics diaphragm paper polymer lithium ion secondary battery as claimed in claim 1, its feature
It is: described positive plate (7) is provided with the anode ear (9) of Unequal distance have on anode ear (9) for just checking winding regularity
Pole pole-piece pole-ear hole, location (8), its aperture is ￠ 1.2mm, and described anode ear (9) is in parallel constitutes battery anode ear (14), aluminum
Lug (15) is welded on battery anode ear (14), and polyimides is posted in aluminium pole ears (15) and battery anode ear (14) junction
Gummed paper (16), negative plate (10) is provided with the negative electrode lug (12) of Unequal distance, negative electrode lug (12) has for checking winding regularity
Cathode pole piece lug hole, location (11), its aperture is ￠ 1.2mm, and described negative electrode lug (12) is in parallel constitutes battery negative electrode lug
(17), copper nickel plating lug (18) is welded on battery negative electrode lug (17), and copper nickel plating lug (18) is with battery negative electrode lug (17) even
Polyimides gummed paper (16) is posted at the place of connecing, and battery two ends all have a pair battery anode ear (14), battery negative electrode lug (17) to draw
Go out.
3. polyvinylidene fluoride coating non-woven fabrics diaphragm paper polymer lithium ion secondary battery as claimed in claim 1, its feature
It is: polyvinylidene fluoride coating non-woven fabrics diaphragm paper (21) non-woven substrate (1) thickness is 28 um-32um, its polyvinylidene fluoride
Ene coatings (2) even application is in the both sides of non-woven substrate (1), and polyvinylidene fluoride coating (2) thickness is 6um-20um, nonwoven
Cloth layer (1) porosity is 60%-75%, and aperture is the high porosity cellulose polyvinylidene fluoride coating of 0.12 um-0.28um
Non-woven fabrics diaphragm paper (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067314.XU CN205542997U (en) | 2015-12-21 | 2015-12-21 | Polyvinylidene fluoride coating non -woven fabrics diaphragm paper polymer lithium ion secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067314.XU CN205542997U (en) | 2015-12-21 | 2015-12-21 | Polyvinylidene fluoride coating non -woven fabrics diaphragm paper polymer lithium ion secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542997U true CN205542997U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521067314.XU Active CN205542997U (en) | 2015-12-21 | 2015-12-21 | Polyvinylidene fluoride coating non -woven fabrics diaphragm paper polymer lithium ion secondary cell |
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| CN (1) | CN205542997U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698320A (en) * | 2019-01-30 | 2019-04-30 | 中银（宁波）电池有限公司 | Positive plate of lithium battery, winding product and coiling type lithium battery |
| CN109698321A (en) * | 2019-01-30 | 2019-04-30 | 中银（宁波）电池有限公司 | Lithium battery cathode plate, winding product and coiling type lithium battery |
| CN109742270A (en) * | 2018-11-19 | 2019-05-10 | 惠州亿纬锂能股份有限公司 | Pressure-bearing lithium battery |
| CN109888150A (en) * | 2019-01-30 | 2019-06-14 | 中银（宁波）电池有限公司 | Lithium battery diaphragm, winding product and coiling type lithium battery |
| WO2020192651A1 (en) * | 2019-03-26 | 2020-10-01 | 宁德新能源科技有限公司 | Pole piece, battery cell and battery |
| WO2020252803A1 (en) * | 2019-06-21 | 2020-12-24 | 比亚迪股份有限公司 | Single cell battery, power battery pack and vehicle |
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2015
- 2015-12-21 CN CN201521067314.XU patent/CN205542997U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742270A (en) * | 2018-11-19 | 2019-05-10 | 惠州亿纬锂能股份有限公司 | Pressure-bearing lithium battery |
| CN109742270B (en) * | 2018-11-19 | 2022-08-05 | 惠州亿纬锂能股份有限公司 | Pressure-bearing lithium battery |
| CN109698320A (en) * | 2019-01-30 | 2019-04-30 | 中银（宁波）电池有限公司 | Positive plate of lithium battery, winding product and coiling type lithium battery |
| CN109698321A (en) * | 2019-01-30 | 2019-04-30 | 中银（宁波）电池有限公司 | Lithium battery cathode plate, winding product and coiling type lithium battery |
| CN109888150A (en) * | 2019-01-30 | 2019-06-14 | 中银（宁波）电池有限公司 | Lithium battery diaphragm, winding product and coiling type lithium battery |
| CN109698320B (en) * | 2019-01-30 | 2024-04-26 | 中银（宁波）电池有限公司 | Lithium battery positive plate, winding product and winding type lithium battery |
| CN109698321B (en) * | 2019-01-30 | 2024-04-26 | 中银（宁波）电池有限公司 | Lithium battery negative plate, winding product and winding type lithium battery |
| CN109888150B (en) * | 2019-01-30 | 2024-04-30 | 中银（宁波）电池有限公司 | Lithium battery separator, wound product and wound lithium battery |
| WO2020192651A1 (en) * | 2019-03-26 | 2020-10-01 | 宁德新能源科技有限公司 | Pole piece, battery cell and battery |
| US11888123B2 (en) | 2019-03-26 | 2024-01-30 | Ningde Amperex Technology Ltd. | Electrode plate, battery cell, and battery |
| WO2020252803A1 (en) * | 2019-06-21 | 2020-12-24 | 比亚迪股份有限公司 | Single cell battery, power battery pack and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170324 Address after: 344000 Jiangxi province Fuzhou City Jinchao Economic Development Zone, hi tech Industrial Park Patentee after: JIANGXI DBK CO., LTD. Patentee after: Shenzhen DBK Electronics Co., Ltd. Address before: 344000 Jiangxi province Fuzhou City Jinchao Economic Development Zone, hi tech Industrial Park Patentee before: JIANGXI DBK CO., LTD. |
|
| TR01 | Transfer of patent right |