CN208460894U - A kind of single battery core and flexible battery group - Google Patents
A kind of single battery core and flexible battery group Download PDFInfo
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- CN208460894U CN208460894U CN201821021062.0U CN201821021062U CN208460894U CN 208460894 U CN208460894 U CN 208460894U CN 201821021062 U CN201821021062 U CN 201821021062U CN 208460894 U CN208460894 U CN 208460894U
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- negative electrode
- battery core
- electrode lug
- anode ear
- single battery
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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
Abstract
The utility model discloses a kind of single battery core and flexible battery groups, it includes positive plate, anode ear, diaphragm, negative electrode tab and negative electrode lug, positive plate, diaphragm and negative electrode lug successively stack setting from bottom to top, anode ear is connect with positive plate, negative electrode lug is connect with negative electrode tab, anode ear and negative electrode lug are located at the opposite two sides of diaphragm, anode ear and the asymmetric setting of negative electrode lug；In this way, the utility model tab and foil junction use ultrasonic welding, welding is close, and weld flexibility it is good, convenient for bending, also, anode ear and the asymmetric setting of negative electrode lug, though after battery core is wrapped up, can intuitively, promptly differentiate positive and negative anodes；In addition, multiple single battery cores are set in battery pack, the decaying of some battery capacity, it is smaller to the capacity impact of integral battery group, also, the number of single battery core is unrestricted on direction in length and breadth, flexible battery group of different shapes can be prepared, meet wearable device to the unique requirements of cell shapes.
Description
Technical field
The utility model belongs to technical field of lithium ion, and in particular to a kind of single battery core and flexible battery group.
Background technique
Field of lithium high speed development in recent years, the main Types of commercial battery are cylindrical battery, rectangular cell at present
And soft-package battery；Wearable device has unique requirements to cell shapes, and therefore, cylindrical battery and rectangular cell are not suitable for can
Wearable device field, flexible battery are concerned because having soft characteristic.
In the prior art, the double-end tab of battery core with copper foil or aluminium foil is connect by the way of bending, this
The bending connecting portion of kind connection type is easy to loosen, to be easy to cause the disconnecting of tab and copper foil or aluminium foil；?
In the manufacturing process of battery, battery core is placed on the rushing in hole of aluminum plastic film, then aluminum plastic film is successively turned down, side seal, note
Liquid, closedtop, last connecting tab is the battery core after the completion of winding or lamination due to battery core, and subsequent fluid injection step needs the long period
Infiltrate battery core；In addition, anode ear and negative electrode lug are usually symmetrical arranged, when making battery pack, it is difficult to distinguish, be not easy to make.
Utility model content
For overcome the deficiencies in the prior art, the purpose of the utility model is to provide a kind of single battery core and flexible batteries
Group.
The technical solution of the utility model is achieved in that
The utility model embodiment provides a kind of single battery core comprising positive plate, anode ear, diaphragm, negative electrode tab and negative
Tab, the positive plate, diaphragm and negative electrode lug successively stack setting from bottom to top, and the anode ear is connect with positive plate, described
Negative electrode lug is connect with negative electrode tab, and the anode ear and negative electrode lug are located at the opposite two sides of diaphragm, the anode ear and cathode
The asymmetric setting of ear.
In above scheme, the center of negative electrode tab side is arranged in the negative electrode lug, and the anode ear is close to the top of positive plate
Angle setting.
In above scheme, the center of positive plate side is arranged in the anode ear, and the negative electrode lug is close to the top of negative electrode tab
Angle setting.
The utility model embodiment also provides a kind of flexible battery group comprising at least one battery core group, described at least one
A battery core group is arranged in parallel, and each battery core group includes at least one single battery core, aluminium foil and copper as described in above scheme
Foil, each single battery core are arranged successively, the anode ear ultrasonic welding of the aluminium foil and each single battery core, the copper foil with
The negative electrode lug ultrasonic welding of each single battery core.
It further include aluminum plastic film, aluminum plastic film top cover and insulating layer in above scheme, at least one battery core group setting exists
On aluminum plastic film, the insulating layer is pasted on aluminum plastic film, and the aluminum plastic film top cover and aluminum plastic film are fastened for sealing battery core group；Institute
It states aluminum plastic film and is provided at least one groove, each single battery core of the battery core group is separately positioned in each groove, described
Each anode ear of battery core group is connect after the stretching of the side of groove with aluminium foil, the equal edge of negative electrode lug of each of described battery core group
The other side of groove is connect after stretching out with copper foil, forms fluid injection gap, the monomer between the single battery core and groove inside
Battery core surrounding is provided with the band for sealing fluid injection gap and positive and negative tab.
In above scheme, the insulating layer is insulating cell, insulating tape or silica gel.
Compared with prior art, the utility model embodiment provides a kind of single battery core and flexible battery group comprising just
Pole piece, anode ear, diaphragm, negative electrode tab and negative electrode lug, the positive plate, diaphragm and negative electrode lug successively stack setting from bottom to top,
The anode ear is connect with positive plate, and the negative electrode lug is connect with negative electrode tab, and the anode ear and negative electrode lug are located at diaphragm
Opposite two sides, the anode ear and the asymmetric setting of negative electrode lug；Flexible battery group includes at least one battery core group, it is described at least
One battery core group is arranged in parallel, and each battery core group includes at least one single battery core, aluminium foil and copper foil, the aluminium foil and every
The anode ear ultrasonic welding of a single battery core, the negative electrode lug ultrasonic welding of the copper foil and each single battery core, in this way, this is practical
Novel tab and foil junction use ultrasonic welding, and welding is close, and weld flexibility is good, is convenient for bending, also, anode
Ear and the asymmetric setting of negative electrode lug, though after battery core is wrapped up, can intuitively, promptly differentiate positive and negative anodes；In addition, in flexible electrical
In the preparation process of pond group, electrolyte can be added during pole piece stacks, and can infiltrate pole piece and diaphragm immediately, thus
The infiltrating time of single battery core is reduced, meanwhile, multiple single battery cores are set in battery pack, some battery capacity decaying, to whole
The capacity impact of body battery pack is smaller, also, the number of single battery core is unrestricted on direction in length and breadth, can prepare different shape
Flexible battery group, meet wearable device to the unique requirements of cell shapes.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the single battery core of the utility model embodiment 1；
Fig. 2 is a kind of structural schematic diagram of the flexible battery group of the utility model embodiment 2.
Appended drawing reference is as follows:
1 --- single battery core, 11 --- positive plate, 12 --- anode ear, 13 --- diaphragm, 14 --- negative electrode tab,
15 --- --- --- --- aluminum plastic film, 5 --- insulating layer, 6 --- bands of copper foil, 4 of aluminium foil, 3 of negative electrode lug, 2.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment 1
The utility model embodiment 1 provides a kind of single battery core, as shown in Figure 1 comprising positive plate 11, anode ear 12,
Diaphragm 13, negative electrode tab 14 and negative electrode lug 15, the positive plate 11, diaphragm 13 and negative electrode lug 15 successively stack setting from bottom to top,
The anode ear 12 is connect with positive plate 11, and the negative electrode lug 15 is connect with negative electrode tab 14, the anode ear 12 and negative electrode lug 15
It is located at the opposite two sides of diaphragm 13, the anode ear 12 and the asymmetric setting of negative electrode lug 15.
Anode ear and the asymmetric setting of negative electrode lug, though after battery core is wrapped up, can intuitively, promptly differentiate positive and negative anodes.
Wherein, battery core size can be adjusted according to different-energy density and shape need, for the sake of security, correspondingly cathode
14 length and width of piece are bigger at least 2mm, the big at least 2mm of 13 length-width ratio negative electrode tab of diaphragm 14 than positive plate 11；
Wherein, when the center of 14 side of negative electrode tab is arranged in negative electrode lug 15, the anode ear 12 is close to the top of positive plate 11
When angle is arranged, the size of the single battery core are as follows:
Positive plate 11 divides for anode material area and anode ear 12, the size in anode material area are as follows: long 5~50mm, wide 5~50mm,
50~220 μm of thickness, anode ear 12 is located at material area edge, long 10~30mm, wide 3~10mm；
The size of diaphragm 13 are as follows: long 9~54mm, wide 9~54mm, 20~60 μm of thickness；
Negative electrode tab 14 is divided for cathode material area and negative electrode lug 15: the size in cathode material area are as follows: long 7~52mm, wide 7~52mm,
50~220 μm of thickness, negative electrode lug 15 is located at material area center, long 10~30mm, wide 3~10mm.
Specifically, positive plate 11 divides for anode material area and anode ear 12, the size in anode material area are as follows: long 15mm, it is wide
15mm, 84 μm of thickness, anode ear 12 is located at material area edge, long 15mm, wide 5mm；
The size of diaphragm 13 are as follows: long 19mm, wide 19mm, 30 μm of thickness；
Negative electrode tab 14 is divided for cathode material area and negative electrode lug 15: the size in cathode material area are as follows: long 17mm, wide 17mm, 67 μ of thickness
M, negative electrode lug 15 are located at material area center, long 15mm, wide 5mm.
Wherein, when the center of 11 side of positive plate is arranged in anode ear 12, the negative electrode lug 15 is close to the top of negative electrode tab 14
Angle setting, the size of the single battery core are as follows:
Positive plate 11 divides for anode material area and anode ear 12, the size in anode material area are as follows: long 5~50mm, wide 5~50mm,
50~220 μm of thickness, anode ear 12 is located at material area center, long 10~30mm, wide 3~10mm；
The size of diaphragm 13 are as follows: long 9~54mm, wide 9~54mm, 20~60 μm of thickness；
Negative electrode tab 14 is divided for cathode material area and negative electrode lug 15: the size in cathode material area are as follows: long 7~52mm, wide 7~52mm,
50~220 μm of thickness, negative electrode lug 15 is located at material area edge, long 10~30mm, wide 3~10mm.
Specifically, positive plate 11 divides for anode material area and anode ear 12, the size in anode material area are as follows: long 15mm, it is wide
15mm, 84 μm of thickness, anode ear 12 is located at material area center, long 15mm, wide 5mm；
The size of diaphragm 13 are as follows: long 19mm, wide 19mm, 30 μm of thickness；
Negative electrode tab 14 is divided for cathode material area and negative electrode lug 15: the size in cathode material area are as follows: long 17mm, wide 17mm, 67 μ of thickness
M, negative electrode lug 15 are located at material area edge, long 15mm, wide 5mm.
Embodiment 2
The utility model embodiment 2 provides a kind of flexible battery group comprising at least one battery core group, it is described at least one
Battery core group is arranged in parallel, and each battery core group includes at least one single battery core 1, aluminium foil 2 and copper foil 3 described in embodiment 1,
Each single battery core 1 is arranged successively, 12 ultrasonic welding of anode ear of the aluminium foil 2 and each single battery core 1, the copper
15 ultrasonic welding of negative electrode lug of foil 3 and each single battery core 1.
Tab and foil junction use ultrasonic welding, and welding is close, and weld flexibility is good, is convenient for bending, also,
Battery core is made of multiple single battery cores 1, the decaying of some battery capacity, smaller to the capacity impact of integral battery group, in addition, electric
The number of core group is unlimited, and the number of the single battery core 1 of each battery core group can also be different, i.e. the transverse direction of flexible battery group or vertical
1 number of single battery core to arrangement is unlimited, therefore, can be adjusted according to specific application category, so as to prepare not
The flexible battery group of similar shape meets different wearable devices to the unique requirements of cell shapes.
It wherein, further include aluminum plastic film 4, aluminum plastic film top cover and insulating layer 5, at least one described battery core group is arranged in plastic-aluminum
On film 4, the insulating layer 5 is pasted on aluminum plastic film 4, and the aluminum plastic film top cover and aluminum plastic film 4 are fastened for sealing battery core group；Institute
It states aluminum plastic film 4 and is provided at least one groove, each single battery core 1 of the battery core group is separately positioned in each groove, institute
The each anode ear 12 for stating battery core group is connect after the stretching of the side of groove with aluminium foil 2, the cathode of each of described battery core group
Ear 15 is connect after the stretching of the other side of groove with copper foil 3, is formed between fluid injection between the single battery core 1 and groove inside
Gap, 1 surrounding of single battery core are provided with the band 7 for sealing fluid injection gap and positive and negative tab.
As shown in Fig. 2, specifically comprising three battery core groups, each battery core group include combining shape by three single battery cores 1
At；The correspondence of aluminum plastic film 4 opens up nine grooves, and single battery core 1 is placed in groove.It injects and is electrolysed to groove during placement
Liquid after fluid injection, by the formation band 7 sealed around of single battery core 1, stretches out the anode ear 12 and 2 ultrasonic bond of aluminium foil of groove part
It connects to form tie point, the negative electrode lug 15 and 3 ultrasonic welding of copper foil for stretching out groove part form tie point, 4th area of aluminum plastic film of blank
Insulating layer 5 is posted in domain, and aluminum plastic film top cover is also set up on aluminum plastic film 4, and aluminum plastic film top cover is provided with groove corresponding with aluminum plastic film 4；
Wherein, insulating layer 5 is insulating cell, insulating tape or silica gel.
Wherein, the groove length and width of the groove of aluminum plastic film 4 and aluminum plastic film top cover at least 1mm bigger than diaphragm, 4 fovea superior of aluminum plastic film
The size of slot is long 10~56mm, and wide 10~56mm, generally specifically takes by 120~800 μm of groove depth: long 21mm, wide 21mm, groove depth
200μm；The size of aluminum plastic film top cover upper groove is long 10~56mm, and wide 10~56mm, generally specifically takes by 80~200 μm of groove depth:
Long 21mm, wide 21mm, 100 μm of groove depth.
Wherein, 2~8mm of bandwidth of band 6, generally takes 5mm.
Wherein, the size of tie point are as follows: long 3~10mm, wide 3~10mm, 1~3mm of spot pitch, solder joint number 4~81
A, the size of general tie point is long 5mm, wide 5mm, spot pitch 1mm, solder joint number 16.
Wherein, the width of aluminium foil 2 and copper foil 3 is 3~10mm, generally takes 5mm, and length changes with battery core number.
The utility model embodiment 2 provides a kind of flexible battery group, is prepared by following steps:
Step 1, nickel-cobalt-manganese ternary material, acetylene black and Kynoar are mixed in the ratio of 8:1:1, grinding is uniform
Afterwards, N-Methyl pyrrolidone is added dropwise and is modulated into anode sizing agent, anode sizing agent is coated in aluminium foil surface, is obtained after dry with just
The positive plate of tab；
Step 2, graphite, acetylene black and butadiene-styrene rubber and carboxymethyl cellulose are mixed in the ratio of 8:1:0.5:0.5, is mixed
Deionized water is added after closing uniformly and is modulated into negative electrode slurry, negative electrode slurry is coated in copper foil surface, is obtained after dry with negative
The negative electrode tab of tab；
Step 3, in the glove box full of protection gas (nitrogen or argon gas), using aluminum plastic film as bottom case, on aluminum plastic film
Nine equidistant grooves are stamped and formed out, and place the positive plate of step 1 acquisition in groove, 60 μ L electrolyte are added dropwise after placement
On positive plate surface, diaphragm is put, 60 μ L electrolyte are added dropwise after placement in membrane surface, then places the negative of one layer of step 2 acquisition
Pole piece obtains single battery core in groove；
Step 4, the surrounding of the single battery core obtained to step 3 is sealed to form band, will stretch out the anode of groove
Ear and aluminium foil ultrasonic welding will stretch out the negative electrode lug and copper foil ultrasonic welding of groove, then paste absolutely in the white space of aluminum plastic film
Edge layer, most rear cover close aluminum plastic film top cover, obtain flexible battery group.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (6)
1. a kind of single battery core, which is characterized in that it includes positive plate (11), anode ear (12), diaphragm (13), negative electrode tab (14)
With negative electrode lug (15), the positive plate (11), diaphragm (13) and negative electrode lug (15) successively stack setting, the anode from bottom to top
Ear (12) is connect with positive plate (11), and the negative electrode lug (15) connect with negative electrode tab (14), the anode ear (12) and negative electrode lug
(15) the opposite two sides of diaphragm (13), the anode ear (12) and negative electrode lug (15) asymmetric setting are located at.
2. a kind of single battery core according to claim 1, which is characterized in that the negative electrode lug (15) is arranged in negative electrode tab
(14) center of side, apex angle of the anode ear (12) close to positive plate (11) are arranged.
3. a kind of single battery core according to claim 1, which is characterized in that the anode ear (12) is arranged in positive plate
(11) center of side, apex angle of the negative electrode lug (15) close to negative electrode tab (14) are arranged.
4. a kind of flexible battery group, which is characterized in that it includes at least one battery core group, at least one described battery core group parallel
Column, each battery core group include at least one single battery core (1) as claimed in any one of claims 1-3, aluminium foil (2) and
Copper foil (3), each single battery core (1) are arranged successively, the anode ear (12) of the aluminium foil (2) and each single battery core (1)
Ultrasonic welding, negative electrode lug (15) ultrasonic welding of the copper foil (3) and each single battery core (1).
5. a kind of flexible battery group according to claim 4, which is characterized in that it further includes aluminum plastic film (4), aluminum plastic film top
Lid and insulating layer (5), at least one described battery core group are arranged on aluminum plastic film (4), and the insulating layer (5) is pasted onto aluminum plastic film
(4) on, the aluminum plastic film top cover and aluminum plastic film (4) are fastened for sealing battery core group；The aluminum plastic film (4) is provided at least one
Each single battery core (1) of groove, the battery core group is separately positioned in each groove, each anode ear of the battery core group
(12) it is connect after the stretching of the side of groove with aluminium foil (2), the negative electrode lug (15) of each of described battery core group is along groove
The other side is connect after stretching out with copper foil (3), forms fluid injection gap, the monomer between the single battery core (1) and groove inside
Battery core (1) surrounding is provided with the band (6) for sealing fluid injection gap and positive and negative tab.
6. a kind of flexible battery group according to claim 5, which is characterized in that the insulating layer (5) is insulating cell, absolutely
Edge adhesive tape or silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821021062.0U CN208460894U (en) | 2018-06-29 | 2018-06-29 | A kind of single battery core and flexible battery group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821021062.0U CN208460894U (en) | 2018-06-29 | 2018-06-29 | A kind of single battery core and flexible battery group |
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| Publication Number | Publication Date |
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| CN208460894U true CN208460894U (en) | 2019-02-01 |
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| CN201821021062.0U Active CN208460894U (en) | 2018-06-29 | 2018-06-29 | A kind of single battery core and flexible battery group |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129577A (en) * | 2019-12-27 | 2020-05-08 | Oppo广东移动通信有限公司 | Flexible battery cell and electronic equipment |
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2018
- 2018-06-29 CN CN201821021062.0U patent/CN208460894U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129577A (en) * | 2019-12-27 | 2020-05-08 | Oppo广东移动通信有限公司 | Flexible battery cell and electronic equipment |
| CN111129577B (en) * | 2019-12-27 | 2023-08-29 | Oppo广东移动通信有限公司 | Flexible battery cell and electronic equipment |
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