CN109638339A - A kind of battery and preparation method thereof of positive and negative anodes difference diaphragm bag making - Google Patents
A kind of battery and preparation method thereof of positive and negative anodes difference diaphragm bag making Download PDFInfo
- Publication number
- CN109638339A CN109638339A CN201811568448.8A CN201811568448A CN109638339A CN 109638339 A CN109638339 A CN 109638339A CN 201811568448 A CN201811568448 A CN 201811568448A CN 109638339 A CN109638339 A CN 109638339A
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- Prior art keywords
- pole piece
- positive
- anode
- diaphragm
- negative electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of batteries and preparation method thereof of positive and negative anodes difference diaphragm bag making, including naked battery core, electrolyte anode cover and negative electrode casing, the naked battery core includes at least one anode pole piece and at least one cathode pole piece, the anode pole piece and the cathode pole piece stacking that is staggered form naked battery core, there is a side of the anode pole piece anode to draw ear, there is a side of the cathode pole piece cathode to draw ear, it is coated with positive diaphragm on the outside of the anode pole piece, is coated with negative electrode membrane bag on the outside of the cathode pole piece.Positive/negative plate is carried out diaphragm bag making positive plate by the present invention respectively, negative electrode tab is not easy to lose powder, and does not easily cause naked battery core internal short-circuit, by 20-30% under short circuit ratio；In addition to this, positive plate and negative electrode tab are respectively coated by positive diaphragm and negative electrode membrane, in lamination or winding, can prevent positive/negative plate from misplacing, battery performance improves 25-40%.The technological operation is simple, at low cost, and high production efficiency is, it can be achieved that commercialization is promoted.
Description
Technical field
The present invention relates to field of batteries, more specifically, be related to a kind of positive and negative anodes difference diaphragm bag making battery and its
Preparation method.
Background technique
During the preparation process, the material of naked battery core is respectively positive and negative anodes, diaphragm and electrolyte, naked battery core to conventional batteries
Diaphragm used is single when using Z-shaped lamination techniques, and uses when having diaphragm bag lamination techniques, and diaphragm is commonly used in cladding
Positive plate, and diaphragm edge melts sealing by heating method heat.Positive/negative plate inside naked battery core made of tradition is easy picking,
Battery short circuit is caused, in addition to this positive/negative plate is easy to happen dislocation, the serious service performance for reducing battery.
Summary of the invention
To overcome drawbacks described above in the prior art, the present invention provide a kind of positive and negative anodes difference diaphragm bag making battery and its
Preparation method.
To achieve the above object, one aspect of the present invention provides a kind of battery of positive and negative anodes difference diaphragm bag making, including naked electricity
Core, electrolyte anode cover and negative electrode casing, the naked battery core include at least one anode pole piece and at least one cathode pole piece, described
Anode pole piece and cathode pole piece, which are staggered, is stacked into naked battery core, and there is a side of the anode pole piece anode to draw ear, the cathode
There is a side of pole piece cathode to draw ear, and positive diaphragm, cladding on the outside of the cathode pole piece are coated on the outside of the anode pole piece
There is negative electrode membrane bag.
Preferably, the size of the anode diaphragm is at least 0.2mm bigger than anode pole piece, the size of the negative electrode membrane
It is at least 0.1mm bigger than cathode pole piece.
Preferably, the anode pole piece includes active material, the active material is cobalt acid lithium, LiMn2O4, ternary
Material, LiFePO 4 one or more of them mixing material.
Preferably, the cathode pole piece includes active material, the active material be natural graphite, artificial graphite,
Hard carbon, soft carbon, silicon based anode material be one such or multiple mixed materials.
Preferably, the anode cover and negative electrode casing are metal-back.
Preferably, the anode diaphragm and negative electrode membrane are single layer PP film, PE film, the bilayer of PP and PE or three layers
Composite membrane, gelatin membrane, single side ceramic diaphragm.
Preferably, the anode diaphragm and negative electrode membrane with a thickness of 5mm-80um, the anode diaphragm and cathode
Heat melts sealing and forms diaphragm corresponding circle of sensation by way of heating between diaphragm.
Preferably, the anode draws ear and cathode draws between ear with angle.
Another aspect of the present invention provides a kind of method of battery for preparing positive and negative anodes difference diaphragm bag making, it is characterised in that:
The following steps are included:
(1) anode pole piece is coated in positive diaphragm, cathode pole piece is coated in negative electrode membrane；
(2) anode pole piece and cathode pole piece coated is staggeredly stacked into naked battery core；
(3) edge of the positive diaphragm and the edge of negative electrode membrane melt sealing by heating method heat；
(4) it is fitted into negative electrode casing after anode pole piece and cathode pole piece that heap is folded being fixed；
(5) electrolyte is injected in negative electrode casing, covers positive cover.
Preferably, the anode pole piece and cathode pole piece tie up fixation with adhesive tape.
Compared with prior art, the beneficial effects of the present invention are:
The present invention includes naked battery core, electrolyte anode cover and negative electrode casing, and the naked battery core includes at least one anode pole piece
With at least one cathode pole piece, the anode pole piece and the cathode pole piece stacking that is staggered form naked battery core, and the one of the anode pole piece
There is anode to draw ear for side, and there is cathode to draw ear, be coated with anode on the outside of the anode pole piece for a side of the cathode pole piece
Diaphragm, the cathode pole piece outside are coated with negative electrode membrane bag.The present invention positive/negative plate is carried out respectively diaphragm bag making positive plate,
Negative electrode tab is not easy to lose powder, and does not easily cause naked battery core internal short-circuit, by 20-30% under short circuit ratio；In addition to this, by positive plate and
Negative electrode tab is respectively coated by positive diaphragm and negative electrode membrane, in lamination, can prevent positive/negative plate from misplacing, and battery performance improves 25-
40%.The technological operation is simple, at low cost, and high production efficiency is, it can be achieved that commercialization is promoted.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the anode pole piece after a kind of battery bag making of positive and negative anodes difference diaphragm bag making provided in an embodiment of the present invention
Top view；
Fig. 2 is the sectional view of A-A in Fig. 1；
Fig. 3 is the cathode pole piece after a kind of battery bag making of positive and negative anodes difference diaphragm bag making provided in an embodiment of the present invention
Top view；
Fig. 4 is the sectional view of B-B in Fig. 3；
Fig. 5 is the battery removal anode cover and negative electrode casing of a kind of positive and negative anodes difference diaphragm bag making provided in an embodiment of the present invention
Top view afterwards；
Fig. 6 is the sectional view of C-C in Fig. 5.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
On the one hand the embodiment of the present invention provides a kind of battery of positive and negative anodes difference diaphragm bag making.
FIG. 1 to FIG. 6 is please referred to, the present invention provides a kind of battery of positive and negative anodes difference diaphragm bag making, including naked battery core, electrolysis
Liquid anode cover and negative electrode casing, the naked battery core include at least one anode pole piece 1 and at least one cathode pole piece 2, the anode
Pole piece 1 and cathode pole piece 2 stacking that is staggered form naked battery core, and there is a side of the anode pole piece 1 anode to draw ear 4, described negative
There is a side of pole pole piece 2 cathode to draw ear 5, be coated with positive diaphragm 3 on the outside of the anode pole piece 1, outside the cathode pole piece 2
Side is coated with negative electrode membrane bag 6.
The size of the anode diaphragm 3 is at least 0.2mm bigger than anode pole piece 1, and the size of the negative electrode membrane 6 is at least than negative
Pole pole piece 2 is 0.1mm big.And in the present embodiment, it is contemplated that the size of cost problem, the anode diaphragm 3 is bigger than anode pole piece 1
The size of 0.2mm, the negative electrode membrane 6 are 0.1mm bigger than cathode pole piece 2.
In the present embodiment, the width of positive diaphragm 3 and negative electrode membrane 6 is 0.5mm bigger than the width of cathode pole piece 2.It is described negative
The width of pole pole piece 2 is 0.2mm bigger than the width of anode pole piece 1.
In the present embodiment, the active material of the anode pole piece 1 is cobalt acid lithium, certainly, the active material of the anode pole piece 1
Material or LiMn2O4, ternary material, LiFePO 4 one or more of them mixing material.
In the present embodiment, the active material of the cathode pole piece 2 is artificial graphite, certainly, the activity of the cathode pole piece 2
Material may be that natural graphite, hard carbon, soft carbon, silicon based anode material be one such or multiple mixed materials.
The anode cover and negative electrode casing are aluminum plastic film, and certainly, the anode cover and negative electrode casing may be stainless steel, aluminum hull
Or other metal-backs.
In the present embodiment, the anode diaphragm 3 and negative electrode membrane 6 are single side ceramic diaphragm, certainly, the anode diaphragm 3
It may be bilayer or sandwich diaphragm, the gelatin membrane of single layer PP film, PE film, PP and PE with negative electrode membrane 6.
In the present embodiment, it is described anode diaphragm 3 and negative electrode membrane 6 with a thickness of 8um, in other embodiments, it is described just
The thickness of pole diaphragm 3 and negative electrode membrane 6 may be set to be the arbitrary value between 5mm-80um, the anode diaphragm 3 and cathode
Heat melts sealing and forms diaphragm corresponding circle of sensation by way of heating between diaphragm 6.
The anode, which draws ear 4, and cathode draws has an angle between ear 5, in the present embodiment, the anode draws ear 4 and cathode draws
Angle between ear 5 is 90 °, may be set to be the angle of other non-zero-degrees in other embodiments certainly, as long as guaranteeing just
Tab 4 and negative electrode lug 5 are not overlapped.
Using the battery of above-mentioned positive and negative anodes difference diaphragm bag making, naked battery core internal short-circuit, naked battery core short circuit are effectively prevented
Rate decline 25%, battery overall performance improves 34%.
Another aspect of the present invention provides a kind of method of battery for preparing positive and negative anodes difference diaphragm bag making, it is characterised in that:
The following steps are included:
(1) anode pole piece 1 is coated in positive diaphragm 3, cathode pole piece 2 is coated in negative electrode membrane 6；
(2) anode pole piece 1 and cathode pole piece 3 coated is staggeredly stacked into naked battery core；
(3) edge of the positive diaphragm 3 and the edge of negative electrode membrane 6 melt sealing by heating method heat；
(4) it is fitted into negative electrode casing after anode pole piece 1 and cathode pole piece 3 that heap is folded being fixed；
(5) electrolyte is injected in negative electrode casing, covers positive cover.
The anode pole piece 1 and cathode pole piece 2 tie up fixation with adhesive tape.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of battery of positive and negative anodes difference diaphragm bag making, including naked battery core and electrolyte, it is characterised in that: the naked battery core packet
Include at least one anode pole piece (1) and at least one cathode pole piece (2), the anode pole piece (1) and cathode pole piece (2) are staggered heap
Folded to form naked battery core, there is a side of the anode pole piece (1) anode to draw ear (4), a side tool of the cathode pole piece (2)
There is cathode to draw ear (5), be coated with positive diaphragm (3) on the outside of the anode pole piece (1), is coated on the outside of the cathode pole piece (2)
Negative electrode membrane bag (6).
2. a kind of battery of positive and negative anodes difference diaphragm bag making according to claim 1, it is characterised in that: the anode diaphragm
(3) size is at least 0.2mm bigger than anode pole piece (1), and the size of the negative electrode membrane (6) is at least bigger than cathode pole piece (2)
0.1mm。
3. a kind of battery of positive and negative anodes difference diaphragm bag making according to claim 1, it is characterised in that: the anode pole piece
It (1) include active material, the active material is cobalt acid lithium, LiMn2O4, ternary material, LiFePO 4 one or more of them
Mixing material.
4. a kind of battery of positive and negative anodes difference diaphragm bag making according to claim 1, it is characterised in that: the cathode pole piece
It (2) include active material, the active material is that natural graphite, artificial graphite, hard carbon, soft carbon, silicon based anode material are therein
One or more mixing materials.
5. a kind of battery of positive and negative anodes difference diaphragm bag making according to claim 1, it is characterised in that: further include anode cover
And negative electrode casing, the anode cover and negative electrode casing are metal-back.
6. a kind of battery of positive and negative anodes difference diaphragm bag making according to claim 1, it is characterised in that: the anode diaphragm
(3) and negative electrode membrane (6) be single layer PP film, PE film, the bilayer or sandwich diaphragm of PP and PE, gelatin membrane, single side ceramics every
Film.
7. a kind of battery of positive and negative anodes difference diaphragm bag making according to claim 1, it is characterised in that: the membrane thicknesses
For 5mm-80um, heat melts sealing and forms diaphragm corresponding circle of sensation by way of heating between diaphragm.
8. a kind of battery of positive and negative anodes difference diaphragm bag making according to claim 1, it is characterised in that: the anode draws ear
(4) draw between ear (5) with cathode with angle.
9. a kind of method for the battery for preparing the described in any item positive and negative anodes difference diaphragm bag makings of claim 1-8, feature exist
In: the following steps are included:
(1) anode pole piece (1) is coated in positive diaphragm (3), cathode pole piece (2) is coated in negative electrode membrane (6)；
(2) edge of the positive diaphragm (3) and the edge of negative electrode membrane (6) melt sealing by heating method heat；
(3) anode pole piece (1) and cathode pole piece (2) coated is staggeredly stacked into naked battery core；
(4) it is fitted into negative electrode casing after anode pole piece (1) and cathode pole piece (2) that heap is folded being fixed；
(5) electrolyte is injected in negative electrode casing, covers positive cover.
10. a kind of method of battery for preparing positive and negative anodes difference diaphragm bag making according to claim 9, it is characterised in that:
The anode pole piece (1) and cathode pole piece (2) tie up fixation with adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568448.8A CN109638339A (en) | 2018-12-21 | 2018-12-21 | A kind of battery and preparation method thereof of positive and negative anodes difference diaphragm bag making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568448.8A CN109638339A (en) | 2018-12-21 | 2018-12-21 | A kind of battery and preparation method thereof of positive and negative anodes difference diaphragm bag making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109638339A true CN109638339A (en) | 2019-04-16 |
Family
ID=66076198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811568448.8A Pending CN109638339A (en) | 2018-12-21 | 2018-12-21 | A kind of battery and preparation method thereof of positive and negative anodes difference diaphragm bag making |
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| CN (1) | CN109638339A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048078A (en) * | 2019-05-23 | 2019-07-23 | 四川福来威新能源科技有限公司 | Electrod assembly, electrode assembly, battery core, the preparation method of battery and electrod assembly |
| CN115467159A (en) * | 2022-09-06 | 2022-12-13 | 昆明云大新能源有限公司 | In-situ etching nitrogen-doped modified carbon cloth and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007071122A1 (en) * | 2005-12-23 | 2007-06-28 | Shenzhen Bak Battery Co., Ltd | A wind type lithium ion battery with a soft package case and a method of manufacture the same |
| CN108400274A (en) * | 2018-03-15 | 2018-08-14 | 重庆市紫建电子有限公司 | A kind of battery with diaphragm bag making |
| CN209169236U (en) * | 2018-12-19 | 2019-07-26 | 广东维都利新能源有限公司 | A kind of novel lamination cylindrical battery |
-
2018
- 2018-12-21 CN CN201811568448.8A patent/CN109638339A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007071122A1 (en) * | 2005-12-23 | 2007-06-28 | Shenzhen Bak Battery Co., Ltd | A wind type lithium ion battery with a soft package case and a method of manufacture the same |
| CN108400274A (en) * | 2018-03-15 | 2018-08-14 | 重庆市紫建电子有限公司 | A kind of battery with diaphragm bag making |
| CN209169236U (en) * | 2018-12-19 | 2019-07-26 | 广东维都利新能源有限公司 | A kind of novel lamination cylindrical battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048078A (en) * | 2019-05-23 | 2019-07-23 | 四川福来威新能源科技有限公司 | Electrod assembly, electrode assembly, battery core, the preparation method of battery and electrod assembly |
| CN110048078B (en) * | 2019-05-23 | 2024-03-08 | 四川福来威新能源科技有限公司 | Electrode component, electrode assembly, battery cell, battery and preparation method of electrode component |
| CN115467159A (en) * | 2022-09-06 | 2022-12-13 | 昆明云大新能源有限公司 | In-situ etching nitrogen-doped modified carbon cloth and preparation method and application thereof |
| CN115467159B (en) * | 2022-09-06 | 2024-04-09 | 昆明云大新能源有限公司 | In-situ etching nitrogen-doped modified carbon cloth and preparation method and application thereof |
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