CN204991877U - Multipolar ear lithium ion power batteries - Google Patents
Multipolar ear lithium ion power batteries Download PDFInfo
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- CN204991877U CN204991877U CN201520578898.0U CN201520578898U CN204991877U CN 204991877 U CN204991877 U CN 204991877U CN 201520578898 U CN201520578898 U CN 201520578898U CN 204991877 U CN204991877 U CN 204991877U
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- copper foil
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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 multipolar ear lithium ion power batteries, it includes electric core, the electricity core is by the positive plate, negative pole piece and just being located, membrane layer between the negative pole piece folds and forms, the positive plate has follows a left side respectively, the convex first and second blank aluminium foil lugs of right side both sides, the negative pole piece has follows a left side respectively, the convex first and second blank copper foil lugs of right side both sides, when range upon range of, first blank aluminium foil lug and first blank copper foil lug are last, both sides are relative down, blank aluminium foil lug of second and the blank copper foil lug of second are last, both sides are relative down, connect anodal ear on the first and second blank aluminium foil lugs, connect the negative pole ear at the first and second blank copper foil lugs. This battery, the internal resistance is littleer, and big current discharge performance is better, and the cyclicity can be excellent, is suitable for the power and energy who does the electricelectric and move and mix electric automobile.
Description
Technical field
The utility model relates to a kind of multi-pole ear-lithium ion electrokinetic cell.
Background technology
The positive and negative lug of common lithium-ion battery with aluminium plastic film only has one, and be generally positioned at side or the offside of battery, the connected mode of lug and pole piece generally has two kinds: a kind of is in the battery of takeup type structure, by the side of tab welding in pole piece length direction; Another kind is in the battery of laminated structure, battery pole piece has all reserved a biscuit metal paper tinsel in manufacturing process on each pole piece, when lamination, these metal formings are overlaped, finally by tab welding in the metal forming of these overlaps, the aluminum plastic film battery made by above-mentioned two kinds of modes, because the internal resistance of battery is larger, CURRENT DISTRIBUTION is also uneven, so the cycle performance of the heavy-current discharge performance of battery and battery is also just poor.
Utility model content
The purpose of this utility model is to provide a kind of multi-pole ear-lithium ion electrokinetic cell of long-life high rate capability.
The purpose of this utility model is achieved in that
A kind of multi-pole ear-lithium ion electrokinetic cell, it comprises battery core, described battery core is by positive plate, negative plate and be just positioned at, barrier film between negative plate is laminated, positive plate has respectively from a left side, the first and second blank aluminium foil lugs that right both sides are protruded, negative plate has respectively from a left side, the first and second blank Copper Foil lugs that right both sides are protruded, when stacked, first blank aluminium foil lug and the first blank Copper Foil lug are upper, lower both sides are relative, second blank aluminium foil lug and the second blank Copper Foil lug are upper, lower both sides are relative, first and second blank aluminium foil lugs connect anode ear, negative electrode lug is connected at the first and second blank Copper Foil lugs.
Wherein, described connection is for being welded to connect.
Wherein, the described battery core aluminum plastic film being connected with positive and negative lug is encapsulated.
Wherein, barrier film is porous polypropylene film.
Aluminum plastic film lithium-ion-power cell of the present utility model, internal resistance is little, good heavy current, and the feature such as to have extended cycle life of battery, is suitable for the power source doing pure EHV electric and hybrid vehicle.
Accompanying drawing explanation
Fig. 1 is anode pole piece schematic diagram of the present utility model.
Fig. 2 is cathode pole piece schematic diagram of the present utility model.
Fig. 3 is the battery core schematic diagram being welded with positive and negative lug of the present utility model.
Fig. 4 is the at room temperature measured heavy-current discharge performance curve of the 3Ah multi-pole ear-lithium ion electrokinetic cell of the utility model embodiment 1.
Fig. 5 is the at room temperature measured heavy-current discharge performance curve of the 5Ah multi-pole ear-lithium ion electrokinetic cell of the utility model embodiment 2.
Embodiment
Embodiment 1
The making of positive plate:
By LiMn
2o
4powder, carbon black mix with 1-METHYLPYRROLIDONE (NMP) solution of Kynoar, make homogeneous composite mortar at normal temperatures and pressures, slurry is coated in equably as on the aluminium foil (thickness 15-20um) of collector, then dry at 160 DEG C, the coated face density of coating in aluminum foil current collector is 400-500g/m
2, then carrying out densification, gained pole piece thickness, at 180-220um, then continues to dry 24 hours at 110 DEG C.In pole piece after oven dry, LiMn
2o
4account for the 91.5wt% of total coating.When cutting positive plate, reserve the first and second blank aluminium foil lugs 1 and 2 that a width is 2cm respectively, see Fig. 1 in the arranged on left and right sides of anode pole piece, material district is of a size of 100mm × 92mm.
The making of negative plate:
Graphite powder, carbon black are become homogeneous composite mortar with 1-METHYLPYRROLIDONE (NMP) solution mixing system of Kynoar, then be coated on the Copper Foil (thickness is 10-15um) as collector equably, then dry at 160 DEG C, the surface density of coating in copper foil current collector is 100-200g/m
2, then carrying out densification, gained pole piece thickness, at 100-150um, then continues to dry 24 hours at 110 DEG C.In pole piece after oven dry, graphite accounts for the 91.5wt% of total coating.When cutting negative plate, reserving the first and second Copper Foil lugs 3 and 4 that a width is 2cm respectively, see Fig. 2 in the arranged on left and right sides of negative plate, material district is of a size of 105mm × 97mm.
The assembling of battery:
Get 3 positive plates and 4 negative plates, (barrier film used is porous polypropylene film 3 positive plates to be inserted into respectively the barrier film of 3 doublings, width is 110mm) in the middle of, the end of barrier film grows more than 5mm than the end of positive plate, and the material district part of positive plate is positioned at the middle of barrier film.During lamination, first put a negative plate at the bottom, then a positive plate wrapped with barrier film is put above, first blank aluminium foil lug 1 side of positive plate and the first blank Copper Foil lug 3 side of negative plate are placed and the material district part of negative plate will cover the material district part of positive plate completely, then a negative plate is stacked in diaphragms, this negative plate will align with the negative plate of bottom, and then on negative plate, stack a positive plate wrapped with barrier film, this positive plate will align with positive plate below, finally start winding, make square battery core.Wherein, when lamination, the first blank aluminium foil lug 1 is relative in upper and lower both sides with the first blank Copper Foil lug 3, and the second blank aluminium foil lug 2 is relative in upper and lower both sides with the second blank Copper Foil lug 4.On the first and second blank aluminium foil lugs 1 and 2 of battery core, weld positive pole ear 5 with ultrasonic bonder, the first and second blank Copper Foil lugs 3 and 4 of battery core weld negative lug 6, and solder joint will be uniformly distributed, and sees Fig. 3.Finally the battery core aluminum plastic film having welded lug is encapsulated, inject electrolyte, change into the aluminum plastic film lithium-ion-power cell that rear obtained capacity is 3Ah.
The internal resistance of the 3Ah aluminum plastic film lithium-ion-power cell of the present embodiment is 6.0m Ω, and battery heavy-current discharge performance curve is at room temperature shown in Fig. 4.
Embodiment 2
The pole piece of battery makes with embodiment 1.Get 5 positive plates and 6 negative plates, the assembling of battery is with embodiment 1.Finally obtained capacity is the aluminum plastic film lithium-ion-power cell of 5Ah.
The internal resistance of the 5Ah aluminum plastic film lithium-ion-power cell of the present embodiment is 4.0m Ω, and battery heavy-current discharge performance curve is at room temperature shown in Fig. 5.
Below embodiment of the present utility model is described by reference to the accompanying drawings.But, should be clear and definite, above the utility model is not limited to describe embodiment, person skilled in art when not departing from the spirit or scope that every claim appended by the utility model defines, can make various amendment and replace also belong to the utility model.
Claims (4)
1. a multi-pole ear-lithium ion electrokinetic cell, it comprises battery core, it is characterized in that, described battery core is by positive plate, negative plate and be just positioned at, barrier film between negative plate is laminated, positive plate has respectively from a left side, the first and second blank aluminium foil lugs (1 that right both sides are protruded, 2), negative plate has respectively from a left side, the first and second blank Copper Foil lugs (3 that right both sides are protruded, 4), when stacked, first blank aluminium foil lug (1) and the first blank Copper Foil lug (3) are upper, lower both sides are relative, second blank aluminium foil lug (2) and the second blank Copper Foil lug (4) are upper, lower both sides are relative, at the first and second blank aluminium foil lugs (1, 2) anode ear (5) is connected on, at the first and second blank Copper Foil lugs (3, 4) negative electrode lug (6) is connected.
2. lithium-ion-power cell as claimed in claim 1, it is characterized in that, described connection is for being welded to connect.
3. lithium-ion-power cell as claimed in claim 1, is characterized in that, encapsulated by the described battery core aluminum plastic film being connected with positive and negative lug.
4. lithium-ion-power cell as claimed in claim 1, it is characterized in that, described barrier film is porous polypropylene film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578898.0U CN204991877U (en) | 2015-08-04 | 2015-08-04 | Multipolar ear lithium ion power batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578898.0U CN204991877U (en) | 2015-08-04 | 2015-08-04 | Multipolar ear lithium ion power batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204991877U true CN204991877U (en) | 2016-01-20 |
Family
ID=55126212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520578898.0U Active CN204991877U (en) | 2015-08-04 | 2015-08-04 | Multipolar ear lithium ion power batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204991877U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273758A (en) * | 2017-07-17 | 2019-01-25 | 通用汽车环球科技运作有限责任公司 | Multi pole ears electrode with electric current Optimization-type Electronic barriers and include its battery |
| CN114373976A (en) * | 2021-12-27 | 2022-04-19 | 合肥国轩高科动力能源有限公司 | Soft packet of lithium cell of many utmost points ear |
| CN115312988A (en) * | 2022-09-08 | 2022-11-08 | 珠海冠宇电池股份有限公司 | Multi-tab pole piece, multi-tab battery cell and battery |
-
2015
- 2015-08-04 CN CN201520578898.0U patent/CN204991877U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273758A (en) * | 2017-07-17 | 2019-01-25 | 通用汽车环球科技运作有限责任公司 | Multi pole ears electrode with electric current Optimization-type Electronic barriers and include its battery |
| CN109273758B (en) * | 2017-07-17 | 2022-02-11 | 通用汽车环球科技运作有限责任公司 | Multi-tab electrode with current optimized electron barrier and battery comprising same |
| CN114373976A (en) * | 2021-12-27 | 2022-04-19 | 合肥国轩高科动力能源有限公司 | Soft packet of lithium cell of many utmost points ear |
| CN115312988A (en) * | 2022-09-08 | 2022-11-08 | 珠海冠宇电池股份有限公司 | Multi-tab pole piece, multi-tab battery cell and battery |
| CN115312988B (en) * | 2022-09-08 | 2023-06-06 | 珠海冠宇电池股份有限公司 | Multipolar ear pole piece, multipolar ear cell and battery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |