CN207558918U - A kind of extreme ear structure for preventing soft-package battery internal corrosion - Google Patents
A kind of extreme ear structure for preventing soft-package battery internal corrosion Download PDFInfo
- Publication number
- CN207558918U CN207558918U CN201721252803.1U CN201721252803U CN207558918U CN 207558918 U CN207558918 U CN 207558918U CN 201721252803 U CN201721252803 U CN 201721252803U CN 207558918 U CN207558918 U CN 207558918U
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- China
- Prior art keywords
- layer
- conductive adhesive
- plastic film
- adhesive layer
- aluminium
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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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- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a kind of extreme ear structures for preventing soft-package battery internal corrosion, including anode ear and aluminum plastic film, the anode ear is equipped with conductive adhesive layer close to the surface of bottom, the length of the conductive adhesive layer is more than or equal to the width of anode ear, the aluminum plastic film includes aluminium layer and the nylon layer positioned at aluminium layer outer surface, and the surface of the conductive adhesive layer is bonded with the aluminium layer of aluminum plastic film.The utility model is intended to provide the extreme ear structure for preventing soft-package battery internal corrosion that a kind of effective protection aluminum plastic film prevents it from being damaged due to electrochemical corrosion.
Description
Technical field
The utility model belongs to soft-package battery field more particularly to a kind of extreme ear structure for preventing soft-package battery internal corrosion.
Background technology
Soft bag lithium ionic cell with its it is higher than energy, safety is good, flexible design the features such as, consumer electronics product lead
Domain and electric vehicle field are widely applied.Such as Chinese patent notification number：CN102856580A discloses a kind of phosphoric acid
Iron lithium soft-package battery and preparation method, it is that LiFePO 4 material and conductive agent, binding agent etc. are mixed anode sizing agent；It will
Graphite and conductive agent, binding agent etc. mix negative electrode slurry.Anode sizing agent is coated on aluminium foil again, positive plate, cathode is made
Negative plate is made in slurry coating on copper foil.Then positive/negative plate addition diaphragm is rolled into cylindrical roll core, by core and core
Supplementary module, lug fixinig plate, outer lug and aluminum plastic film package material are assembled, and then fluid injection is melted into, finally sealed.
The outer packing of soft pack cell is aluminum plastic film, although can effectively reduce the weight of battery core using aluminum plastic film, is improved
The energy density of battery core, but aluminum plastic film also easily corrodes breakage, loses to the protective effect inside battery core.Aluminum plastic film is generally by outer
The nylon layer or pet layer in portion, intermediate aluminium layer and internal PP layers composition, internal PP layer played in encapsulation process bond with it is close
Envelope acts on.PP layers during melting-solidification brittleness can increase, easily generate micro crack in process.Electrolyte can
These cracks are penetrated into be in direct contact with aluminium layer, once the aluminium layer in aluminum plastic film has electronic loop generation, metallic aluminium with cathode
Layer will occur to insert lithium reaction, form the very high aluminium lithium alloy of brittleness, so as to cause the internal corrosion of soft pack cell, eventually lead to aluminium
Layer ruptures, and loses the insulating effect to moisture.
Utility model content
The utility model is to overcome above-mentioned deficiency of the prior art, and providing one kind prevents soft-package battery internal corrosion
Extreme ear structure.
To achieve these goals, the utility model uses following technical scheme：
A kind of extreme ear structure for preventing soft-package battery internal corrosion, including anode ear and aluminum plastic film, the anode ear is the bottom of close to
The surface in portion is equipped with conductive adhesive layer, and the length of the conductive adhesive layer is more than or equal to the width of anode ear, and the aluminum plastic film includes
Aluminium layer and the nylon layer positioned at aluminium layer outer surface, the surface of the conductive adhesive layer are bonded with the aluminium layer of aluminum plastic film.Anode ear with
Conductive adhesive layer is equipped between the aluminium layer of aluminum plastic film, anode ear is connected by conductive adhesive layer with aluminum plastic film aluminium layer so that aluminum plastic film aluminium
Layer can be maintained at high potential, avoid aluminium layer that electrochemical reaction occurs.
Preferably, the conductive adhesive layer includes the local conducting resinl that basic material layer is combined with basic material layer
Layer, aluminium layer of the local conductive adhesive layer respectively with anode ear surface and aluminum plastic film contact.Basic material layer is used to position
Local conductive adhesive layer ensures that local conductive adhesive layer contacts well, while local conductive adhesive layer is protected with anode ear and aluminium layer
Shield improves the reliability of conductive adhesive layer.
Preferably, the conductive adhesive layer includes basic material layer and at least one in basic material layer leads
Electrical component, the conductive component are positioned in the middle part of basic material layer, the conductive component respectively with anode ear surface and
The aluminium layer contact of aluminum plastic film.
Preferably, the basic material layer is individual layer PP, one or more in individual layer PE, multilayer PP, multilayer PE
Combination.
Preferably, the local conductive adhesive layer is electroconductive stuffing metal material powder or fiber, electrically conductive graphite, leads
One or more combination in electric carbon black, conductive carbon fibre.
Preferably, the conductive component is made of manufacturing silicon carbide semiconductor material.
The beneficial effects of the utility model are：The aluminium layer of aluminum plastic film is made to be in stable state under high potential, avoids plastic-aluminum
Electrochemical reaction occurs between the aluminium layer and cathode of film, causes soft pack cell internal corrosion, improve soft-package battery safety and
Service life.
Description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment 1；
Fig. 2 is the structure diagram of the utility model embodiment 2；
Fig. 3 is the structure diagram of the utility model embodiment 3.
In figure：Anode ear 1, conductive layer 2, basic material layer 2a, conductive material layer 2b, conductive component 2c.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
Embodiment 1
In embodiment as shown in Figure 1, a kind of extreme ear structure for preventing soft-package battery internal corrosion, including anode ear 1 and aluminium
Plastic film, anode ear is rectangular, anode ear close to the surface of bottom be equipped with conductive adhesive layer 2, conductive adhesive layer along anode ear width
Direction arranges that the length of conductive adhesive layer is more than or equal to the width of anode ear.Aluminum plastic film includes aluminium layer and positioned at aluminium layer outer surface
Nylon layer.Conductive adhesive layer includes basic material layer and local conductive adhesive layer, and basic material layer is individual layer PP, individual layer PE, multilayer
One or more combinations in PP, multilayer PE.Local conductive adhesive layer is conductive metallic material powder or fiber, electrically conductive graphite,
One or more combination in conductive black, conductive carbon fibre.Local conductive adhesive layer forms composite material, office with basic material layer
Aluminium layer of portion's conductive adhesive layer respectively with anode ear surface and aluminum plastic film contacts.
In actual installation process, conductive adhesive layer cladding is pasted onto on anode ear, conductive adhesive layer and anode ear conducting, simultaneously
The surface of conductive adhesive layer is bonded with the aluminium layer of aluminum plastic film, and the resistivity of conductive adhesive layer is less than 0.1G Ω cm, and anode ear and aluminium
Resistance between plastic film aluminium layer is in 25 to 20000 Ω.Anode ear is connected by conductive adhesive layer with the aluminium layer of aluminum plastic film so that aluminium layer
It is maintained at high potential.
Embodiment 2
In embodiment as shown in Figure 2, a kind of extreme ear structure for preventing soft-package battery internal corrosion, including anode ear 1 and aluminium
Plastic film, anode ear is rectangular, anode ear close to the surface of bottom be equipped with conductive adhesive layer 2, conductive adhesive layer along anode ear width
Direction arranges that the length of conductive adhesive layer is more than or equal to the width of anode ear.Aluminum plastic film includes aluminium layer and positioned at aluminium layer outer surface
Nylon layer, the surface of conductive adhesive layer is bonded with the aluminium layer of aluminum plastic film.
Conductive adhesive layer includes basic material layer 2a and local conductive adhesive layer 2b, and basic material layer is individual layer PP, individual layer PE, more
One or more combinations in layer PP, multilayer PE.Local conductive adhesive layer is conductive metallic material powder or fiber, conductive stone
One or more combination in ink, conductive black, conductive carbon fibre.Local conductive adhesive layer is rectangular, and positioned at basic material layer
Inside, aluminium layer of the local conductive adhesive layer respectively with anode ear surface and aluminum plastic film contact.
In actual installation process, conductive adhesive layer cladding is pasted onto on anode ear, conductive adhesive layer and anode ear conducting, simultaneously
The surface of conductive adhesive layer is bonded with the aluminium layer of aluminum plastic film, and the resistivity of conductive adhesive layer is less than 0.1G Ω cm, and anode ear and aluminium
Resistance between plastic film aluminium layer is in 25 to 20000 Ω.Anode ear is connected by conductive adhesive layer with the aluminium layer of aluminum plastic film so that aluminium layer
It is maintained at high potential.
Embodiment 3
In embodiment as shown in Figure 3, a kind of extreme ear structure for preventing soft-package battery internal corrosion, including anode ear 1 and aluminium
Plastic film, anode ear is rectangular, anode ear close to the surface of bottom be equipped with conductive adhesive layer 2, conductive adhesive layer along anode ear width
Direction arranges that the length of conductive adhesive layer is more than or equal to the width of anode ear.Aluminum plastic film includes aluminium layer and positioned at aluminium layer outer surface
Nylon layer, the surface of conductive adhesive layer is bonded with the aluminium layer of aluminum plastic film.
Conductive adhesive layer includes basic material layer 2a and two conductive component 2c, and basic material layer is individual layer PP, individual layer PE, more
One or more combinations in layer PP, multilayer PE.Conductive component is made of manufacturing silicon carbide semiconductor material.Conductive component is positioned at
Inside basic material layer, aluminium layer of the conductive component respectively with anode ear surface and aluminum plastic film contacts.
In actual installation process, conductive adhesive layer cladding is pasted onto on anode ear, conductive adhesive layer and anode ear conducting, simultaneously
The surface of conductive adhesive layer is bonded with the aluminium layer of aluminum plastic film, and the resistivity of conductive adhesive layer is less than 0.1G Ω cm, and anode ear and aluminium
Resistance between plastic film aluminium layer is in 25 to 20000 Ω.Anode ear is connected by conductive adhesive layer with the aluminium layer of aluminum plastic film so that aluminium layer
It is maintained at high potential.
Claims (5)
1. a kind of extreme ear structure for preventing soft-package battery internal corrosion, it is characterized in that, including anode ear（1）And aluminum plastic film, it is described just
Lug（1）Conductive adhesive layer is equipped with close to the surface of bottom（2）, the conductive adhesive layer（2）Length be more than or equal to anode ear（1）'s
Width, the aluminum plastic film include aluminium layer and the nylon layer positioned at aluminium layer outer surface, the conductive adhesive layer（2）Surface and aluminium
The aluminium layer fitting of plastic film.
2. a kind of extreme ear structure for preventing soft-package battery internal corrosion according to claim 1, it is characterized in that, the conduction
Glue-line（2）Including basic material layer（2a）And with basic material layer（2a）The local conductive adhesive layer being combined（2b）, it is described
Local conductive adhesive layer（2b）Respectively with anode ear（1）The aluminium layer of surface and aluminum plastic film contacts.
3. a kind of extreme ear structure for preventing soft-package battery internal corrosion according to claim 1, it is characterized in that, the conduction
Glue-line（2）Including basic material layer（2a）And positioned at basic material layer（2a）Interior at least one conductive component（2c）, it is described
Conductive component（2c）It is positioned at basic material layer（2a）Middle part, the conductive component（2c）Respectively with anode ear（1）Surface
And the aluminium layer contact of aluminum plastic film.
4. a kind of extreme ear structure for preventing soft-package battery internal corrosion according to Claims 2 or 3, it is characterized in that, it is described
Basic material layer（2a）For one or more combinations in individual layer PP, individual layer PE, multilayer PP, multilayer PE.
5. a kind of extreme ear structure for preventing soft-package battery internal corrosion according to claim 3, it is characterized in that, the conduction
Component（2c）It is made of manufacturing silicon carbide semiconductor material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721252803.1U CN207558918U (en) | 2017-09-27 | 2017-09-27 | A kind of extreme ear structure for preventing soft-package battery internal corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721252803.1U CN207558918U (en) | 2017-09-27 | 2017-09-27 | A kind of extreme ear structure for preventing soft-package battery internal corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207558918U true CN207558918U (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721252803.1U Expired - Fee Related CN207558918U (en) | 2017-09-27 | 2017-09-27 | A kind of extreme ear structure for preventing soft-package battery internal corrosion |
Country Status (1)
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| CN (1) | CN207558918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768588A (en) * | 2017-09-27 | 2018-03-06 | 浙江超威创元实业有限公司 | One kind prevents soft-package battery internal corrosion method and extreme ear structure |
-
2017
- 2017-09-27 CN CN201721252803.1U patent/CN207558918U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768588A (en) * | 2017-09-27 | 2018-03-06 | 浙江超威创元实业有限公司 | One kind prevents soft-package battery internal corrosion method and extreme ear structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20200927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |