CN206388807U - Battery winding needle and electricity core winding machine - Google Patents
Battery winding needle and electricity core winding machine Download PDFInfo
- Publication number
- CN206388807U CN206388807U CN201621426939.5U CN201621426939U CN206388807U CN 206388807 U CN206388807 U CN 206388807U CN 201621426939 U CN201621426939 U CN 201621426939U CN 206388807 U CN206388807 U CN 206388807U
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- Prior art keywords
- needle
- battery
- needle body
- winding
- battery winding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model is related to a kind of battery winding needle and electricity core winding machine, wherein battery winding needle includes volume pin body, the volume pin body includes connecting portion, the first needle body and the second needle body, first needle body and second needle body are connected with the connecting portion respectively, first needle body and second needle body have two relative arcuate flanks respectively, and the battery winding needle also includes the fluorinated ethylene propylene copolymer anti-friction layer that covering is arranged at the volume pin body outer surface.Above-mentioned battery winding needle and electricity core winding machine, can solve the problem that the electrostatic problem between the problem of frictional force is excessive between battery winding needle and battery diaphragm and battery winding needle and gelatin membrane.Further, since the first needle body and the second needle body have two relative arcuate flanks respectively, it can avoid during electric core winding, battery diaphragm is scratched, so as to improve the yields of battery core.
Description
Technical field
The utility model is related to electricity core winding machine field, more particularly to a kind of battery winding needle and electricity core winding machine.
Background technology
At present, lithium ion battery be widely used in mobile phone, it is tablet personal computer, wearable device, portable power source, electronic cigarette, each
The fields such as digital product, electric tool, power, energy storage are planted, the application of its market is wide, potentiality are big.With the application of lithium ion battery
Increasingly extensive, battery capacity is increasing, and people improve ion battery to the security requirement of ion battery also more and more higher
Security turns into a kind of urgent and universal requirement.
Wherein, in order to improve the security of lithium ion battery, a kind of mode is to prepare lithium-ion electric using jelly-roll pin
Pond.In the preparation process of lithium ion battery, electric core winding is one of important process, by electric core winding on battery winding needle it
Afterwards, it is necessary to which battery winding needle is extracted.There is larger electrostatic and frictional force between traditional battery winding needle and jelly-roll pin,
Volume pin extracts difficulty after causing electric core winding, in some instances it may even be possible to accidentally together extract electrode cores out when extracting volume pin, destruction electricity
Pool structure, reduces the yields of battery production.
In addition, traditional battery winding needle is generally sheet, when winding battery core, battery diaphragm is easily scratched, battery core is damaged
Structure.
Utility model content
Based on this, it is necessary to provide a kind of battery winding needle and electricity core winding machine, battery winding needle and battery can be solved
The problem of frictional force is excessive between barrier film and there is electrostatic, while can avoid during electric core winding, battery diaphragm is scraped
It is broken, so as to improve the yields of battery core.
A kind of battery winding needle, including volume pin body, it is characterised in that the volume pin body includes connecting portion, the first needle body
And second needle body, first needle body and second needle body be connected with the connecting portion respectively, first needle body and described
Second needle body has two relative arcuate flanks respectively, and the battery winding needle is also arranged at the volume pin body appearance including covering
The fluorinated ethylene propylene copolymer anti-friction layer in face.
In one of the embodiments, the thickness of the fluorinated ethylene propylene copolymer anti-friction layer and the volume pin body
The ratio between thickness be 0.02~0.5:1.
In one of the embodiments, the thickness of the fluorinated ethylene propylene copolymer anti-friction layer and the volume pin body
The ratio between thickness be 0.06~0.35:1.
In one of the embodiments, first needle body is included away from the first outer surface of second needle body and close
Second outer surface of second needle body, second needle body includes the 3rd outer surface and close institute away from first needle body
The 4th outer surface of the first needle body is stated, the fluorinated ethylene propylene copolymer anti-friction layer covering is arranged at first appearance
The outer surface in face, the 3rd outer surface and the connecting portion.
In one of the embodiments, first outer surface and the 3rd outer surface have two relative arcs respectively
Sideways.
In one of the embodiments, first needle body and second needle body are respectively semiellipse cylinder.
In one of the embodiments, first needle body and second needle body are respectively semicylinder.
In one of the embodiments, first outer surface and the 3rd outer surface also have a plane, institute respectively
State plane and connect described two relative arcuate flanks respectively.
In one of the embodiments, the described one end of first needle body away from the connecting portion is provided with a pair of lug cards
Groove, the fluorinated ethylene propylene copolymer anti-friction layer position corresponding with the lug neck is provided with opening.
A kind of electricity core winding machine, it includes winding mechanism and as described above any described battery winding needle, the battery winding needle
Detachably it is arranged on the winding mechanism.
Above-mentioned battery winding needle and electricity core winding machine, can solve the problem that between battery winding needle and battery diaphragm that frictional force is excessive and ask
Topic.For the battery using gelatin membrane, because polyvinylidene fluoride (PVDF) material that gelatin membrane surface is coated contains
There is fluorine element, the fluorinated ethylene propylene copolymer anti-friction layer of above-mentioned battery winding needle equally contains fluorine element, both inhale to electric charge
Draw ability quite, electrostatic is not likely to produce during friction, therefore can also solve to roll up the electrostatic problem between pin and battery diaphragm.In addition,
Because the first needle body and the second needle body have two relative arcuate flanks respectively, it can avoid during electric core winding, battery
Barrier film is scratched, so as to improve the yields of battery core.
Brief description of the drawings
Fig. 1 is the structural representation of the battery winding needle of the embodiment of the utility model one；
Fig. 2 is the structural representation of the battery winding needle of another embodiment of the utility model；
Fig. 3 a are the structural representation of the battery winding needle of the another embodiment of the utility model；
Fig. 3 b are the structural representation of the battery winding needle of the another embodiment of the utility model；
Fig. 4 is the structural representation of the battery winding needle of the another embodiment of the utility model.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.Elaborate many details in order to abundant in the following description
Understand the utility model.But the utility model can be implemented with being much different from other manner described here, this area
Technical staff can do similar improvement in the case of without prejudice to the utility model intension, therefore the utility model is not by following public affairs
The limitation for the specific embodiment opened.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise specifically defined.
A kind of battery winding needle, including volume pin body, the volume pin body include connecting portion, the first needle body and the second needle body,
First needle body and second needle body are connected with the connecting portion respectively, first needle body and second needle body difference
With two relative arcuate flanks, the battery winding needle also includes the perfluoroethylene that covering is arranged at the volume pin body outer surface
Propylene copolymer anti-friction layer.
In order to further illustrate above-mentioned battery winding needle, an example is, referring to Fig. 1, the battery winding needle 10 includes volume pin
Body 11, the volume pin body includes connecting portion 111, the first needle body 112 and the second needle body 113, first needle body and described
Second needle body is connected with the connecting portion respectively, and the battery winding needle also includes covering and is arranged at the volume pin body outer surface
Fluorinated ethylene propylene copolymer anti-friction layer 12.
In the present embodiment, fluorinated ethylene propylene copolymer is coated on volume pin body surface, because perfluoroethylenepropylene is common
The coefficient of friction of polymer material is extremely low, with lubrication, therefore can solve frictional force between battery winding needle and battery diaphragm
Excessive the problem of.In addition, for the battery using gelatin membrane, the polyvinylidene fluoride coated due to gelatin membrane surface
(PVDF) material contains fluorine element, and the fluorinated ethylene propylene copolymer anti-friction layer of above-mentioned battery winding needle equally contains fluorine element,
Both quite, are not likely to produce electrostatic to charge attraction ability during friction, therefore can also solve to roll up quiet between pin and battery diaphragm
Electric problem.
In one embodiment, first needle body and second needle body are fixedly connected with the connecting portion respectively, and
And first needle body and second needle body are oppositely arranged.In such manner, it is possible to avoid during electric core winding, the first needle body and
Second needle body produces slip, so as to improve the efficiency of electric core winding.
In one embodiment, first needle body and second needle body have two relative arcuate flanks respectively.This
Sample, can be avoided during electric core winding, and battery diaphragm is scratched, so as to improve the yields of battery core.
In one embodiment, it is provided with elastic cord breaker in the connecting portion.So, the thickness of connecting portion can adjust,
So that the thickness of whole battery winding needle is adjustable so that after electric core winding completion, reduced by elasticity of compression cushion
The thickness of battery winding needle, makes battery winding needle more be drawn out easily.
In one embodiment, the fluorinated ethylene propylene copolymer anti-friction layer has some long along the volume pin body
Spend the strip groove and/or strip bulge of direction extension.In such manner, it is possible to avoid fluorinated ethylene propylene copolymer anti-friction layer and electricity
Pond barrier film is seamlessly connected so that after electric core winding completion, due to there is gap between battery winding needle and battery diaphragm, make electricity
Pond volume pin is more drawn out easily.
In one embodiment, the thickness of the thickness of the fluorinated ethylene propylene copolymer anti-friction layer and the volume pin body
The ratio between degree is 0.02~0.5:1.For example, the thickness of the fluorinated ethylene propylene copolymer anti-friction layer and the volume pin body
The ratio between thickness is 0.06~0.35:1.And for example, the thickness of the fluorinated ethylene propylene copolymer anti-friction layer and the volume pin sheet
The ratio between thickness of body is 0.25:1.In such manner, it is possible to preferable lubricant effect and destatic effect.
Wherein, when preparing above-mentioned battery winding needle, width, the thickness equidimension of finished product volume pin are calculated as needed first
Parameter；The size of fluorinated ethylene propylene copolymer anti-friction layer is deducted, obtains rolling up the size of pin body；According to the chi of volume pin body
Volume pin body is made in very little use predetermined material, and volume pin body is made for example with metal material；Perfluor is coated on volume pin body
Ethylene propylene copolymer anti-friction layer, obtains finished product volume pin, i.e., above-mentioned battery winding needle.Above-mentioned battery winding needle is used for the battery core of battery
Winding, prepares lithium ion battery.Be particularly suitable for use in the electric core winding of gelatin membrane battery.
In one embodiment, first needle body and second needle body are laminated structure.
In one embodiment, as shown in Fig. 2 first needle body includes the first outer surface away from second needle body
112a and the second outer surface 112b close to second needle body, second needle body includes the 3rd away from first needle body
Outer surface 113a and the 4th outer surface 113b close to first needle body, the fluorinated ethylene propylene copolymer anti-friction layer covers
Lid is arranged at the outer surface of first outer surface, the 3rd outer surface and the connecting portion.
In one embodiment, as shown in Fig. 2 the described one end of first needle body away from the connecting portion is provided with a pair of poles
Ear neck 112a.The fluorinated ethylene propylene copolymer anti-friction layer position corresponding with the lug neck is provided with opening
121.Lug neck is used to, when carrying out electric core winding, place the anode ear and negative electrode lug in battery core.
In one embodiment, the connecting portion is provided with an at least positioning hole.The positioning hole runs through the connecting portion.
The positioning hole, which is used to coordinate, uses the electric core winding mechanism, and battery winding needle is arranged in electric core winding mechanism.
In one embodiment, as shown in Fig. 2 first outer surface and the 3rd outer surface are relative with two respectively
Arcuate flanks.Smooth arcuate flanks can avoid battery diaphragm from being punctured or scratch, and improve the yields of battery core.For example,
First needle body and second needle body are respectively semiellipse cylinder.And for example, the first needle body and second needle body are respectively
Semicylinder.
In one embodiment, as shown in Fig. 2 first outer surface and the 3rd outer surface are also flat with one respectively
Face, the plane connects described two relative arcuate flanks respectively.So, both it had been avoided that battery diaphragm was punctured or scratched, again
It is avoided that the thickness of battery winding needle is blocked up.
In one embodiment, as shown in Figure 3 a, the fluorinated ethylene propylene copolymer anti-friction layer is provided with described
Some first strip grooves extended along its length on first outer surface, the fluorinated ethylene propylene copolymer anti-friction layer is set
It is equipped with some second strip grooves extended along its length on the 3rd outer surface.First strip groove and the second bar shaped
Groove can make to fill air between fluorinated ethylene propylene copolymer anti-friction layer and battery diaphragm, it is to avoid perfluoroethylenepropylene is common
Polymers anti-friction layer and battery diaphragm are vacuum abutted, so that battery winding needle is more drawn out easily.
In one embodiment, some first strip grooves are uniformly distributed on first outer surface, if described
Dry second strip groove is uniformly distributed on the 3rd outer surface.
In one embodiment, the area ratio of the gross area of some first strip grooves and first outer surface
For (0.1~0.45)：1, the gross area of some second strip grooves and the area ratio of the 3rd outer surface are (0.1
~0.45)：1.
In one embodiment, as shown in Figure 3 b, the fluorinated ethylene propylene copolymer anti-friction layer is provided with described
Some first strip bulges extended along its length on first outer surface, the fluorinated ethylene propylene copolymer anti-friction layer is set
It is equipped with some second strip bulges extended along its length on the 3rd outer surface.First strip bulge and the second bar shaped
Projection can make to fill air between fluorinated ethylene propylene copolymer anti-friction layer and battery diaphragm, it is to avoid perfluoroethylenepropylene is common
Polymers anti-friction layer and battery diaphragm are vacuum abutted, so that battery winding needle is more drawn out easily.
In one embodiment, first outer surface is provided with two first strip bulges, two first strip bulge
It is respectively arranged at the both sides that first outer surface connects with second outer surface；3rd outer surface is provided with two second
Strip bulge, two second strip bulge is respectively arranged at the 3rd outer surface connects with the 4th outer surface two
Side.
In one embodiment, first needle body and second needle body are fixedly connected with the connecting portion respectively, and
And first needle body and second needle body are oppositely arranged.
In one embodiment, as shown in figure 4, the connecting portion includes first connecting portion 111a, second connecting portion 111b
And the Flexible Connector 111c being respectively arranged between the first connecting portion and the second connecting portion, first needle body with
The first connecting portion connection, second needle body is connected with the second connecting portion.
In one embodiment, the Flexible Connector is provided with spring.
In one embodiment, the Flexible Connector is provided with elastic resin layer.
In one embodiment, the Flexible Connector is provided with spring and elastic resin layer.
In one embodiment, the first connecting portion, elastic resin layer and the thickness ratio of the second connecting portion
For (0.6~1.5)：1：(0.6~1.5).So, the thickness and the thickness of first connecting portion/second connecting portion of elastic resin layer
It is close, with enough compression strokes, it is unlikely to the thickness and intensity of influence volume pin body again.
In one embodiment, the connecting portion include first connecting portion and second connecting portion, the first connecting portion and
The second connecting portion grafting is set, and first needle body is connected with the first connecting portion, second needle body and described the
Two connecting portions are connected.
In one embodiment, first connecting portion is provided with connecting hole, and connecting hole inwall is equipped with least two annular grooves,
Second connecting portion is provided with the connecting pole matched with the connecting hole, connecting pole and is provided with flange.Or, second connecting portion is set
Connecting hole is equipped with, connecting hole inwall is equipped with least two annular grooves, and first connecting portion is provided with what is matched with the connecting hole
Annular flange is provided with connecting pole, connecting pole.Wherein, connecting hole inwall sets elasticity layer.
So, when winding battery core, in the first annular groove inside annular flange insertion connecting hole on connecting pole, with
Fix the first needle body and the second needle body.When winding is completed, it is necessary to when taking out battery core, tightly pinch first connecting portion and second connecting portion,
So that in the second annular groove inside annular flange insertion connecting hole on connecting pole, shorten the first needle body and the second needle body it
Between distance so that volume pin integral diameter diminish, easily take out.
A kind of electricity core winding machine, it includes winding mechanism and the battery winding needle as described in above-mentioned any embodiment, the electricity
Pond volume pin is detachably arranged on the winding mechanism.For example, the battery winding needle be detachably arranged at by positioning hole it is described
On winding mechanism.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply 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, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of battery winding needle, including volume pin body, it is characterised in that the volume pin body include connecting portion, the first needle body and
Second needle body, first needle body and second needle body are connected with the connecting portion respectively, first needle body and described
Two needle bodies have two relative arcuate flanks respectively, and the battery winding needle is also arranged at the volume pin body outer surface including covering
Fluorinated ethylene propylene copolymer anti-friction layer.
2. battery winding needle as claimed in claim 1, it is characterised in that the thickness of the fluorinated ethylene propylene copolymer anti-friction layer
The ratio between thickness of degree and the volume pin body is 0.02~0.5:1.
3. battery winding needle as claimed in claim 2, it is characterised in that the thickness of the fluorinated ethylene propylene copolymer anti-friction layer
The ratio between thickness of degree and the volume pin body is 0.06~0.25:1.
4. battery winding needle as claimed in claim 1, it is characterised in that first needle body is included away from second needle body
First outer surface and the second outer surface close to second needle body, second needle body include the away from first needle body
Three outer surfaces and the 4th outer surface close to first needle body, the fluorinated ethylene propylene copolymer anti-friction layer covering are set
In the outer surface of first outer surface, the 3rd outer surface and the connecting portion.
5. battery winding needle as claimed in claim 4, it is characterised in that first outer surface and the 3rd outer surface difference
With two relative arcuate flanks.
6. battery winding needle as claimed in claim 5, it is characterised in that first needle body and second needle body are respectively half
Elliptic Cylinder.
7. battery winding needle as claimed in claim 5, it is characterised in that first needle body and second needle body are respectively half
Cylinder.
8. battery winding needle as claimed in claim 5, it is characterised in that first outer surface and the 3rd outer surface are also divided
Not Ju You a plane, the plane connects described two relative arcuate flanks respectively.
9. battery winding needle as claimed in claim 1, it is characterised in that the described one end of first needle body away from the connecting portion is set
A pair of lug necks are equipped with, the fluorinated ethylene propylene copolymer anti-friction layer position corresponding with the lug neck is set
There is opening.
10. a kind of electricity core winding machine, it is characterised in that the battery including winding mechanism and as described in any in claim 1 to 9
Pin is rolled up, the battery winding needle is detachably arranged on the winding mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426939.5U CN206388807U (en) | 2016-12-23 | 2016-12-23 | Battery winding needle and electricity core winding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426939.5U CN206388807U (en) | 2016-12-23 | 2016-12-23 | Battery winding needle and electricity core winding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206388807U true CN206388807U (en) | 2017-08-08 |
Family
ID=59490220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621426939.5U Expired - Fee Related CN206388807U (en) | 2016-12-23 | 2016-12-23 | Battery winding needle and electricity core winding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206388807U (en) |
-
2016
- 2016-12-23 CN CN201621426939.5U patent/CN206388807U/en not_active Expired - Fee Related
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Legal Events
| 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: 20170808 Termination date: 20191223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |