CN207468544U - Hot melt adhesive tape and lithium ion battery - Google Patents
Hot melt adhesive tape and lithium ion battery Download PDFInfo
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- CN207468544U CN207468544U CN201721294347.7U CN201721294347U CN207468544U CN 207468544 U CN207468544 U CN 207468544U CN 201721294347 U CN201721294347 U CN 201721294347U CN 207468544 U CN207468544 U CN 207468544U
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- melt adhesive
- hot melt
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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
A kind of Hot melt adhesive tape and lithium ion battery, wherein, Hot melt adhesive tape includes PET film layer, the first hot melt adhesive layer and the second hot melt adhesive layer, and the PET film layer is sticked first hot melt adhesive layer, and side of the PET film layer far from first hot melt adhesive layer is sticked second hot melt adhesive layer.Above-mentioned Hot melt adhesive tape, during applied to lithium battery, PET film layer can play certain supporting role, it can inhibit battery in heated diaphragm retracts, and then improve battery safety, the effect of the fixation adhesive tape in tradition can be substituted, by setting two layers of hot melt adhesive, stronger viscosity can be generated when heated so that aluminum plastic film and core to be fixed together, so that above-mentioned Hot melt adhesive tape integrates conventional hot melt adhesive tape and fixation adhesive tape, possess the function of traditional hot-melt adhesive and fixing glue simultaneously, shorten rubberizing process, production technology is simplified.
Description
Technical field
The utility model is related to battery technology field, more particularly to a kind of Hot melt adhesive tape and lithium ion battery.
Background technology
With the development of science and technology, digital, electronic product is also increasingly close to people’s lives and work.Wherein, Soft Roll
Lithium ion battery is also used widely in all kinds of digital electronic goods.Along with the increase of electronic product function, digital electricity
The volume requirement of sub- product is less and less, therefore people increasingly wish polymer flexible packaging lithium ion battery volume smaller, electricity
Tankage higher.In this case, it needs, by improving battery material, it is close to improve the continuous energy for promoting battery of cell voltage
Degree, can meet the needs of current.However, pursuing energy density promotion means to pursue ultimate attainment space availability ratio, the limit
Design, especially the safety and Protection index of the limit, such as slimming materials'use, in this way, also virtually increasing battery
Security risk.Mainly by positive plate, negative plate and diaphragm, winding forms core strueture to battery roll core mutually, and positive/negative plate is by diaphragm
It separates.For battery roll core in the case that heated, battery core internal diaphragm has a certain proportion contraction, and what short circuit occurred for positive/negative plate contact can
It can property increase.Meanwhile battery roll core is when falling, positive plate and negative plate be easily subjected to displacement or it is damaged and occur short circuit or
The problem of person is breaking.
Although all living through necessary reliability demonstration or test before all battery manufactures, battery belongs to electricity after all
Most dangerous parts in sub- digital product, thereby, it is ensured that cell safety is most important.To prevent lithium ion battery product, especially
It is mobile phone, occurs cell safety hidden danger because of dropping during user's use, electronic product, such as mobile phone must before manufacture
The stringent drop test of up to thousands of times must be passed through.And in order to reduce because of the electricity that electronic digital product is dropped and is occurred
Pond security risk, inside lithium ion cell are usually provided with hot melt adhesive, which generates stronger viscosity by plastic-aluminum when heated
Film and core are fixed together, and avoid core in falling process that relative displacement occurs with aluminum plastic film, cause core pole piece breakage short
Road or lug fracture lead to test crash.Meanwhile battery roll core is being heated, battery core internal diaphragm easily occurs certain
The contraction of ratio so that the possibility increase of short circuit occurs for the positive/negative plate contact on diaphragm both sides, to inhibit diaphragm retracts, needs
Stick on fixation adhesive tape on core head and tail portion, to improve battery security.
However, in the actual production process, fixation adhesive tape and Hot melt adhesive tape need to use respectively, very numb in production technology
It is tired.
Utility model content
Based on this, it is necessary to provide a kind of Hot melt adhesive tape and lithium ion for integrating conventional hot melt adhesive tape and fixation adhesive tape
Battery.
A kind of Hot melt adhesive tape, including PET film layer, the first hot melt adhesive layer and the second hot melt adhesive layer, the PET film layer is sticked institute
State the first hot melt adhesive layer, side of the PET film layer far from first hot melt adhesive layer is sticked second hot melt adhesive layer.
The thickness of the PET film is 10 microns~14 microns in one of the embodiments,.
The thickness of first hot melt adhesive layer is 13 microns~17 microns in one of the embodiments,.
The thickness of second hot melt adhesive layer is 13 microns~17 microns in one of the embodiments,.
It is further included in one of the embodiments, without viscous protective layer, the nothing glues protective layer and is attached at first hot melt
On side of the glue-line far from the PET film layer.
The thickness that the nothing glues protective layer in one of the embodiments, is 3 microns~7 microns.
Off-style paper layer is further included in one of the embodiments, and the off-style paper layer is attached at second hot melt adhesive layer
Side far from the PET film layer.
The thickness of the off-style paper layer is 45 microns~55 microns in one of the embodiments,.
First hot melt adhesive layer is identical with the thickness of second hot melt adhesive layer in one of the embodiments,.
A kind of lithium ion battery, including the Hot melt adhesive tape as above described in any embodiment.
The lithium ion battery is soft bag lithium ionic cell in one of the embodiments,.
The lithium ion battery includes packaging film and battery roll core, the packaging film cladding in one of the embodiments,
In outside the battery roll core, the battery roll core includes positive plate, diaphragm and negative plate, the positive plate, diaphragm and negative plate
It is wound after being sequentially overlapped and the flat battery roll core is prepared, the end after winding is the anode at ending
On piece is provided with anode ear, and negative electrode lug is provided on the negative plate, and the soft bag lithium ionic cell further includes Hot melt adhesive tape, institute
Hot melt adhesive tape is stated as above the Hot melt adhesive tape described in any embodiment, the first hot melt adhesive layer of the Hot melt adhesive tape are set to institute
It states on battery roll core, and first hot melt adhesive layer is coated at the ending of the battery roll core, first hot melt adhesive layer is extremely
Between the anode ear and the negative electrode lug, side of second hot melt adhesive layer far from the PET film layer connects small part
Connect the packaging film.
Above-mentioned Hot melt adhesive tape, during applied to lithium battery, PET film layer can play certain supporting role, applied to lithium electricity
Hot melt adhesive tape is adhered to outside the battery roll core of lithium battery by Chi Shi, and Hot melt adhesive tape is connect with the diaphragm in battery roll core, Neng Gou
Under the action of PET film layer, lithium battery diaphragm is inhibited to shrink, to reduce the positive plate negative plate for being located at diaphragm both sides after diaphragm retracts
It contacts and generates security risk, and then improve battery safety, the effect of the fixation adhesive tape in tradition can be substituted, by setting
Two layers of hot melt adhesive is put, stronger viscosity can be generated when heated so that aluminum plastic film and core to be fixed together, so that on
It states Hot melt adhesive tape and integrates conventional hot melt adhesive tape and fixation adhesive tape, while possess the function of traditional hot-melt adhesive and fixing glue, contract
Short rubberizing process, production technology are simplified.
Description of the drawings
Fig. 1 is the structure diagram of the Hot melt adhesive tape of one embodiment of the utility model；
Fig. 2 is the structure diagram of the Hot melt adhesive tape of one embodiment of the utility model；
Fig. 3 is the structure diagram of the Hot melt adhesive tape of one embodiment of the utility model；
Fig. 4 is the structure diagram of the A face angle degree of the battery roll core of the lithium ion battery of one embodiment of the utility model；
Fig. 5 is the structure diagram of the B face angle degree of the battery roll core of the lithium ion battery of one embodiment of the utility model；
Fig. 6 is that the battery roll core of the lithium ion battery of one embodiment of the utility model uses the A face angle degree after Hot melt adhesive tape
Structure diagram；
Fig. 7 is that the battery roll core of the lithium ion battery of one embodiment of the utility model uses the B face angle degree after Hot melt adhesive tape
Structure diagram.
Specific embodiment
For the ease of understanding the utility model, above-mentioned purpose, the feature and advantage to enable the utility model are brighter
It is aobvious understandable, specific embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.It illustrates in the following description
Many details give the better embodiment of the utility model in order to fully understanding the utility model in attached drawing.
But the utility model can be realized in many different forms, however it is not limited to embodiments described herein.On the contrary
Ground, the purpose of providing these embodiments is that making the more thorough and comprehensive of the disclosure understanding to the utility model.This practicality
It is novel can be much to implement different from other manner described here, those skilled in the art can be without prejudice to this practicality
Similar improvement is done in the case of novel intension, therefore the utility model is not limited by following public specific embodiment.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature." multiple " are meant that at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined." several " are meant that at least one in the description of the present invention,
Such as one, two etc., unless otherwise specifically defined.
For example, referring to Fig. 1, a kind of Hot melt adhesive tape, heats including PET film layer 100, the first hot melt adhesive layer 200 and second
Glue-line 300, the PET film layer 100 are sticked first hot melt adhesive layer 200, and the PET film layer 100 is far from the described first hot melt
The side of glue-line 200 is sticked second hot melt adhesive layer 300.For another example, PET film layer is high temperature resistance polyester film, and PET is
The abbreviation of Polyethylene terephthalate, the PET film layer plays support and buffer action, applied to lithium battery
When, Hot melt adhesive tape is adhered to outside the battery roll core of lithium battery, Hot melt adhesive tape is connect with the diaphragm in battery roll core, Neng Gou
Under the action of PET film layer, lithium battery diaphragm is inhibited to shrink, to reduce the positive plate negative plate for being located at diaphragm both sides after diaphragm retracts
It contacts and generates security risk.First hot melt adhesive layer and second hot melt adhesive layer provide adhesive effect, in lithium battery
Adhesive effect is played in packaging, is mainly used for the bonding of core and aluminum plastic film, for fixing the core and plastic-aluminum inside lithium ion
Film prevents the core in falling process to be subjected to displacement with aluminum plastic film and then the damaged short circuit of core pole piece or lug is caused to be broken,
So as to eliminate or reduce cell safety hidden danger.For another example, described be sticked is set to attach.
Above-mentioned Hot melt adhesive tape, during applied to lithium battery, PET film layer can play certain supporting role, can inhibit electricity
Battery safety is improved in pond in heated diaphragm retracts, can substitute the effect of the fixation adhesive tape in tradition,
By setting two layers of hot melt adhesive, stronger viscosity can be generated when heated so that aluminum plastic film and core to be fixed together, so as to
So that above-mentioned Hot melt adhesive tape integrates conventional hot melt adhesive tape and fixation adhesive tape, while possess the work(of traditional hot-melt adhesive and fixing glue
Can, rubberizing process is shortened, production technology is simplified.By setting two layers of hot melt adhesive layer, during applied to lithium battery, make simultaneously
Adhesion strength is stronger between core and aluminum plastic film, further improve the security performance of battery.Meanwhile traditional lithium battery is simultaneously
During using Hot melt adhesive tape and fixation adhesive tape, two kinds of adhesive tapes easily overlap and thickness are caused to increase, so that the energy content of battery is close
Degree reduces.Above-mentioned new type hot-melt adhesive, with tradition simultaneously using under the identical size condition of overall size of fixation adhesive tape and Hot melt adhesive tape,
By hot melt adhesive adhesive tape, fixation adhesive tape merges into a new type hot-melt adhesive end to end with core, can further suppress battery in high temperature ring
Diaphragm retracts rate under border, and then the safety of battery is further promoted, while Hot melt adhesive tape adhered area bigger, core and aluminium
Adhesion strength is stronger between plastic film, can effectively prevent battery functi on caused by terminal user drops mobile phone accidentally and fail, thus into
One step enhances the reliability of battery.
In order to maintain more suitable thickness, and adhesion property is suitable, in an embodiment, the thickness of the PET film
It is 10 microns~14 microns.For another example, the thickness of first hot melt adhesive layer is 13 microns~17 microns.For another example, second heat
The thickness of melt layer is 13 microns~17 microns.It so, it is possible to maintain more suitable thickness, and adhesion property is suitable,
It can inhibit battery diaphragm retracts in a high temperauture environment, the safety of battery is preferable, additionally it is possible to prevent terminal user and fall accidentally
Battery functi on caused by falling mobile phone fails, and battery performance is more reliable.
In one embodiment, the thickness of the PET film is 11 microns~13 microns.For another example, the thickness of first hot melt adhesive layer
Spend is 14 microns~16 microns.For another example, the thickness of second hot melt adhesive layer is 14 microns~16 microns.It so, it is possible to maintain
More suitable thickness, and adhesion property is suitable, can inhibit battery diaphragm retracts in a high temperauture environment, the peace of battery
Full property is preferable, additionally it is possible to prevent battery functi on caused by terminal user drops mobile phone accidentally and fail, battery performance is more reliable.
In one embodiment, the thickness of the PET film is 12 microns.For another example, the thickness of first hot melt adhesive layer is micro- for 15
Rice.For another example, the thickness of second hot melt adhesive layer is 15 microns.It so, it is possible to maintain more suitable thickness, and adhere to
Proper properties, can inhibit battery diaphragm retracts in a high temperauture environment, and the safety of battery is preferable, additionally it is possible to prevent terminal use
Battery functi on caused by mobile phone is dropped at family accidentally fails, and battery performance is more reliable.
In one embodiment, first hot melt adhesive layer is identical with the thickness of second hot melt adhesive layer.In this way, adhesion property
It is more suitable, battery diaphragm retracts in a high temperauture environment can be inhibited, the safety of battery is preferable, additionally it is possible to prevent terminal use
Battery functi on caused by mobile phone is dropped at family accidentally fails, and battery performance is more reliable.
In order to which rubberizing process is more convenient, and the first hot melt adhesive layer can be preferably protected, in an embodiment, please refer to figure
2, new type hot-melt adhesive is further included without viscous protective layer 400, and the nothing glues protective layer 400 and is attached at first hot melt adhesive layer 200 far
On side from the PET film layer 100.When the nothing is glued protective layer and is hot pressed, the viscous of first hot melt adhesive layer 200 is discharged
Property, so that the hot melt adhesive layer on PET film layer two sides bonds aluminum plastic film with aluminium foil or diaphragm, rubberizing process is more convenient,
And it can preferably protect the first hot melt adhesive layer.For another example, the thickness that the nothing glues protective layer is 3 microns~7 microns, in this way, making
The thickness without viscous protective layer is suitable, and enables without viscous protective layer by preferably discharging first hot melt adhesive layer during hot pressing
Viscosity.For another example, the nothing glues the material of protective layer for SIS thermotropic pressure sensitive glue, main component SIS, be styrene and
The block copolymer of isoprene.For another example, SIS is styrene-isoprene-phenylethene thermoplastic copolymer.
In order to which rubberizing process is more convenient, and the second hot melt adhesive layer can be preferably protected, in an embodiment, please refer to figure
3, new type hot-melt adhesive further includes off-style paper layer 500, and the off-style paper layer 500 is sticked second hot melt adhesive layer 300 far from described
The side of PET film layer 100.For another example, the thickness of the off-style paper layer is 45 microns~55 microns.In this way, by set it is described from
Type paper layer 500, for protecting the adhesion property of second hot melt adhesive layer, to prevent new type hot-melt adhesive before applied to battery
Second hot melt adhesive layer viscosity declines.In use, need in advance to remove the off-style paper layer, in this way, rubberizing process is more convenient,
And it can preferably protect the second hot melt adhesive layer.When especially setting the off-style paper layer and the nothing to glue protective layer simultaneously, newly
Second hot melt adhesive layer in use, removing the off-style paper layer, and is bonded to plastic-aluminum using more convenient by type hot melt adhesive
On film, aluminium foil or diaphragm, then under hot pressing function, you can the off-style paper layer is made to discharge the viscous of first hot melt adhesive layer
Property so that new type hot-melt adhesive it is extremely easy to use.
Above-mentioned Hot melt adhesive tape, during applied to lithium battery, PET film layer can play certain supporting role, can inhibit electricity
Battery safety is improved in pond in heated diaphragm retracts, can substitute the effect of the fixation adhesive tape in tradition,
By setting two layers of hot melt adhesive, stronger viscosity can be generated when heated so that aluminum plastic film and core to be fixed together, so as to
So that above-mentioned Hot melt adhesive tape integrates conventional hot melt adhesive tape and fixation adhesive tape, while possess the work(of traditional hot-melt adhesive and fixing glue
Can, rubberizing process is shortened, production technology is simplified.By setting two layers of hot melt adhesive layer, during applied to lithium battery, make simultaneously
Adhesion strength is stronger between core and aluminum plastic film, further improve the security performance of battery.Meanwhile with tradition simultaneously using solid
Adhesive tape is determined with the overall size of Hot melt adhesive tape under identical size condition, and by hot melt adhesive adhesive tape, fixation adhesive tape merges into one end to end with core
New type hot-melt adhesive, can further suppress battery diaphragm retracts rate in a high temperauture environment, and then further promote battery
Safety, while Hot melt adhesive tape adhered area bigger, adhesion strength is stronger between core and aluminum plastic film, can effectively prevent terminal use
Battery functi on caused by mobile phone is dropped at family accidentally fails, so as to further enhance the reliability of battery.
A kind of lithium ion battery, including the Hot melt adhesive tape as above described in any embodiment.
For example, lithium ion battery includes packaging film and battery roll core, the packaging film is coated on outside the battery roll core.It needs
It is noted that how packaging film is coated on outside battery roll core, refer to the prior art.For another example, the battery roll core is electricity
Pond battery core.For another example, the battery roll core include positive plate, negative plate and diaphragm, the diaphragm be located at the positive plate with it is described
Between negative plate.The positive plate, diaphragm and negative plate are sequentially overlapped winding and obtain the battery roll core.For another example, it please refers to
Fig. 4 and Fig. 5 is respectively the structure diagram of battery roll core A face angles degree, B face angle degree.It should be noted that A faces correspond to electricity
The ending face of pond core is located at the outermost end of battery roll core after positive plate, diaphragm, negative plate are sequentially overlapped winding.B
Face is the lateral surface opposite with A faces.For another example, the battery roll core has flat structure, in other words similar to cuboid shape structure,
It is with opposite A faces and B faces, wherein the ending face for the battery roll core that the A faces of the battery roll core correspond to.Please refer to Fig. 4
And Fig. 5, battery roll core 20 include positive plate 23, diaphragm 22 and negative plate (not shown, in 22 inside of diaphragm), are set on positive plate
Anode ear 24 is equipped with, negative electrode lug 25 is provided on negative plate.Positive plate, diaphragm, negative plate be sequentially overlapped winding after obtain it is flat
Flat-shaped battery electricity core 20.For another example, the battery roll core is provided with 21 at ending, i.e., positive plate, diaphragm, negative plate are folded successively
Add the end after winding, positioned at the outside of battery roll core.
Fig. 6 and Fig. 7 is please referred to, the structure diagram for having used the battery roll core after Hot melt adhesive tape for a kind of mode.
For another example, the Hot melt adhesive tape is the as above Hot melt adhesive tape described in any embodiment.For another example, the lithium ion battery further includes heat
Melten gel band 10, Hot melt adhesive tape 10 are the utility model as above Hot melt adhesive tape 10 described in any embodiment, the Hot melt adhesive tape
10 are set on the lateral wall of the battery roll core 20, and the Hot melt adhesive tape 10 coats the ending of the battery roll core 20
Place 21.For another example, the lithium ion battery includes packaging film and battery roll core, and the packaging film is coated on outside the battery roll core,
The battery roll core includes positive plate, diaphragm and negative plate, and winding is made after the positive plate, diaphragm and negative plate are sequentially overlapped
Standby to obtain the flat battery roll core, the end after winding is at ending, and the Hot melt adhesive tape is set to the battery
Outside core, and the Hot melt adhesive tape is covered at the ending of the battery roll core, and the first end and second end of the Hot melt adhesive tape are equal
On the B faces of the battery roll core.For another example, the A faces less parallel of the B faces of the battery roll core and the battery roll core needs
It is noted that the structure that core is formed in winding process is the endless track structure outside similar football pitch, therefore say herein
Less parallel.For another example, lithium ion battery includes packaging film and battery roll core, and the battery roll core includes pole piece and is electrically connected with pole piece
The lug connect, the pole piece be equipped with for insulate or the fixed Hot melt adhesive tape and/or lug be equipped with for insulating or
The fixed Hot melt adhesive tape.For another example, the lithium ion battery is soft bag lithium ionic cell.
In one embodiment, the lithium ion battery includes packaging film and battery roll core, and the packaging film is coated on the electricity
Outside the core of pond, the battery roll core includes positive plate, diaphragm and negative plate, and the positive plate, diaphragm and negative plate are sequentially overlapped
Winding is that the flat battery roll core is prepared afterwards, and the end after winding is at ending, is set on the positive plate
There is anode ear, negative electrode lug is provided on the negative plate, the soft bag lithium ionic cell further includes Hot melt adhesive tape, the hot melt adhesive
Band is as above the Hot melt adhesive tape described in any embodiment, the first hot melt adhesive layer of the Hot melt adhesive tape are set to the battery winding
On core, and first hot melt adhesive layer is coated at the ending of the battery roll core, at least part position of first hot melt adhesive layer
Between the anode ear and the negative electrode lug, side of second hot melt adhesive layer far from the PET film layer connects the packet
Fill film.For another example, the packaging film is aluminum plastic film.It should be further noted that since diaphragm is more than positive plate and negative plate, because
When first hot melt adhesive layer of Hot melt adhesive tape is pasted on the battery roll core by this, and the first hot melt adhesive layer coats the battery winding
When at the ending of core, the first hot melt adhesive layer will necessarily be made to connect diaphragm, in this way, the PET film layer in Hot melt adhesive tape can be to diaphragm
Contraction play certain inhibiting effect, improve the security performance of battery.It should be noted that the lithium-ion electric of the present embodiment
Pond can understand with reference to the dependency structure of Fig. 4 to Fig. 7.
Above-mentioned lithium ion battery uses the Hot melt adhesive tape, and during applied to lithium battery, PET film layer can play certain branch
Support acts on, and can inhibit battery in heated diaphragm retracts, and then improve battery safety, can substitute in tradition
Fixation adhesive tape effect, by setting two layers of hot melt adhesive, stronger viscosity can be generated when heated with by aluminum plastic film and volume
Core is fixed together, so that above-mentioned Hot melt adhesive tape integrates conventional hot melt adhesive tape and fixation adhesive tape, while possesses tradition
The function of hot melt adhesive and fixing glue, shortens rubberizing process, and production technology is simplified.By setting two layers of hot melt adhesive simultaneously
Layer, during applied to lithium battery so that adhesion strength is stronger between core and aluminum plastic film, further improves the security performance of battery.
Meanwhile with tradition simultaneously using under the identical size condition of overall size of fixation adhesive tape and Hot melt adhesive tape, by hot melt adhesive adhesive tape and volume
Core print tail fixation adhesive tape merges into a new type hot-melt adhesive, can further suppress battery diaphragm retracts in a high temperauture environment
Rate, and then the safety of battery is further promoted, while Hot melt adhesive tape adhered area bigger, adhesion strength between core and aluminum plastic film
It is stronger, it can effectively prevent battery functi on caused by terminal user drops mobile phone accidentally and fail, so as to further enhance battery
Reliability.
The utility model discloses a kind of lithium ion battery Hot melt adhesive tapes.Its structure is a kind of the double of similar multilayered structure
Face adhesive tape, a face toughness generate viscosity after another side hot pressing, for fixing the core and plastic-aluminum packaging film inside lithium ion,
It prevents from being subjected to displacement in falling process.By positive plate, negative plate and diaphragm, winding forms core strueture, positive and negative anodes to core mutually
Piece is separated by diaphragm.In the case that heated, battery core internal diaphragm has a certain proportion contraction, and what short circuit occurred for positive/negative plate contact can
Energy property increase to inhibit diaphragm retracts, needs to stick on fixation adhesive tape on core head and tail portion, promotes safety.This practicality is believed
Breath merges the fixation adhesive tape of traditional Hot melt adhesive tape and conventional roll core print tail, can not only shorten rubberizing process, but also be provided simultaneously with
Two kinds of adhesive tapes play the role of.Under the premise of energy density is not influenced, it can inhibit to receive in heated situation lower diaphragm plate in battery
Contracting improves battery security, while inhibits mobile phone relative displacement between core and plastic-aluminum packaging film in falling process, promotes production
Product reliability.The utility model is directed to core head and the tail fixing glue, using Hot melt adhesive tape, merges with ending Hot melt adhesive tape so that heat
Melten gel band area bigger, adhesion strength is stronger between core and aluminum plastic film, and also more preferable and the utility model uses newly product reliability
Battery core after type hot melt adhesive is whole, and due to reducing one layer of fixation adhesive tape thickness, thinner, product energy density is more
It is high.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that the common skill for this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of Hot melt adhesive tape, which is characterized in that including PET film layer, the first hot melt adhesive layer and the second hot melt adhesive layer, the PET
Film layer is sticked first hot melt adhesive layer, and side of the PET film layer far from first hot melt adhesive layer is sticked second heat
Melt layer.
2. Hot melt adhesive tape according to claim 1, which is characterized in that the thickness of the PET film is 10 microns~14 microns.
3. Hot melt adhesive tape according to claim 1, which is characterized in that the thickness of first hot melt adhesive layer for 13 microns~
17 microns.
4. Hot melt adhesive tape according to claim 1, which is characterized in that the thickness of second hot melt adhesive layer for 13 microns~
17 microns.
5. Hot melt adhesive tape according to claim 1, which is characterized in that further include without viscous protective layer, the nothing glues protective layer
It is attached on side of first hot melt adhesive layer far from the PET film layer.
6. Hot melt adhesive tape according to claim 5, which is characterized in that the thickness that the nothing glues protective layer is micro- for 3 microns~7
Rice.
7. Hot melt adhesive tape according to claim 1, which is characterized in that further include off-style paper layer, the off-style paper layer is sticked
In side of second hot melt adhesive layer far from the PET film layer.
8. Hot melt adhesive tape according to claim 7, which is characterized in that the thickness of the off-style paper layer is micro- for 45 microns~55
Rice.
9. a kind of lithium ion battery, including the Hot melt adhesive tape as described in any one of claim 1 to 8.
10. lithium ion battery according to claim 9, the lithium ion battery includes packaging film and battery roll core, described
Packaging film is coated on outside the battery roll core, the battery roll core include positive plate, diaphragm and negative plate, the positive plate, every
Film and negative plate wind after being sequentially overlapped and the flat battery roll core are prepared, and the end after winding is to finish up
Locate, be provided with anode ear on the positive plate, be provided with negative electrode lug on the negative plate, which is characterized in that the Hot melt adhesive tape
The first hot melt adhesive layer be set on the battery roll core, and first hot melt adhesive layer coats the ending of the battery roll core
Place, first hot melt adhesive layer are at least partially disposed between the anode ear and the negative electrode lug, second hot melt adhesive layer
Side far from the PET film layer connects the packaging film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721294347.7U CN207468544U (en) | 2017-09-30 | 2017-09-30 | Hot melt adhesive tape and lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721294347.7U CN207468544U (en) | 2017-09-30 | 2017-09-30 | Hot melt adhesive tape and lithium ion battery |
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| CN207468544U true CN207468544U (en) | 2018-06-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653833A (en) * | 2020-04-30 | 2020-09-11 | 广州超音速自动化科技股份有限公司 | Process for winding thermosol on lithium battery |
| CN113717652A (en) * | 2021-08-30 | 2021-11-30 | 武汉安托万拉瓦锡电池有限公司 | Lithium battery roll core fixing adhesive with molecular-level flame-retardant function |
| CN115029078A (en) * | 2022-08-10 | 2022-09-09 | 楚能新能源股份有限公司 | Novel anti-drop soft-package winding battery cell and rubberizing method |
-
2017
- 2017-09-30 CN CN201721294347.7U patent/CN207468544U/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653833A (en) * | 2020-04-30 | 2020-09-11 | 广州超音速自动化科技股份有限公司 | Process for winding thermosol on lithium battery |
| CN111653833B (en) * | 2020-04-30 | 2022-05-17 | 广州超音速自动化科技股份有限公司 | Process for winding thermosol on lithium battery |
| CN113717652A (en) * | 2021-08-30 | 2021-11-30 | 武汉安托万拉瓦锡电池有限公司 | Lithium battery roll core fixing adhesive with molecular-level flame-retardant function |
| CN115029078A (en) * | 2022-08-10 | 2022-09-09 | 楚能新能源股份有限公司 | Novel anti-drop soft-package winding battery cell and rubberizing method |
| CN115029078B (en) * | 2022-08-10 | 2022-11-15 | 楚能新能源股份有限公司 | Anti-drop soft-package winding battery cell and rubberizing method |
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Address after: Huitai Industrial Park 516006 Guangdong province Huizhou City Zhongkai high tech Zone No. 63 District Co-patentee after: HUIZHOU TECHNE Corp. Patentee after: Huizhou Yiwei Energy Battery Co.,Ltd. Address before: Huitai Industrial Park 516006 Guangdong province Huizhou City Zhongkai high tech Zone No. 63 District Co-patentee before: HUIZHOU TECHNE Corp. Patentee before: HUIZHOU JINNENG BATTERY CO.,LTD. Address after: Huitai Industrial Park 516006 Guangdong province Huizhou City Zhongkai high tech Zone No. 63 District Co-patentee after: HUIZHOU TECHNE Corp. Patentee after: HUIZHOU JINNENG BATTERY CO.,LTD. Address before: Huitai Industrial Park 516006 Guangdong province Huizhou City Zhongkai high tech Zone No. 63 District Co-patentee before: HUIZHOU TECHNE Corp. Patentee before: HUIZHOU TCL HYPERPOWER BATTERIES Inc. |
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Effective date of registration: 20191030 Address after: Huitai Industrial Park 516006 Guangdong province Huizhou City Zhongkai high tech Zone No. 63 District Patentee after: Huizhou Yiwei Energy Battery Co.,Ltd. Address before: Huitai Industrial Park 516006 Guangdong province Huizhou City Zhongkai high tech Zone No. 63 District Co-patentee before: HUIZHOU TECHNE Corp. Patentee before: Huizhou Yiwei Energy Battery Co.,Ltd. |
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Decision date of declaring invalidation: 20191119 Decision number of declaring invalidation: 42313 Granted publication date: 20180608 |
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