CN206564302U - Battery winding needle and electricity core winding machine - Google Patents
Battery winding needle and electricity core winding machine Download PDFInfo
- Publication number
- CN206564302U CN206564302U CN201621426197.6U CN201621426197U CN206564302U CN 206564302 U CN206564302 U CN 206564302U CN 201621426197 U CN201621426197 U CN 201621426197U CN 206564302 U CN206564302 U CN 206564302U
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- Prior art keywords
- needle
- battery
- antistatic layer
- ethylene
- 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, the battery winding needle also includes the ethylene tetrafluoroethylene copolymer antistatic layer that covering is arranged at the volume pin body outer surface, and the ethylene tetrafluoroethylene copolymer antistatic layer has some strip grooves and/or strip bulge extended along the volume pin body length direction.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 ethylene tetrafluoroethylene copolymer antistatic layer has some strip grooves and/or strip bulge extended along the volume pin body length direction so that there is air between battery winding needle and battery diaphragm, so that battery winding needle is more drawn out easily.
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, seamless applying with battery diaphragm in winding process, cause battery after the completion of winding
Volume pin is difficult to take out.
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 after enabling to electric core winding completion, battery winding needle is more easy to
Extract.
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, and the battery winding needle is also arranged at institute including covering
State the ethylene-tetrafluoroethylene copolymer antistatic layer of volume pin body outer surface, the ethylene-tetrafluoroethylene copolymer antistatic layer
With some strip grooves and/or strip bulge extended along the volume pin body length direction.
In one of the embodiments, the thickness of the ethylene-tetrafluoroethylene copolymer antistatic layer and the volume pin sheet
The ratio between thickness of body is 0.02~0.5:1.
In one of the embodiments, the thickness of the ethylene-tetrafluoroethylene copolymer antistatic layer and the volume pin sheet
The ratio between thickness of body is 0.06~0.25:1.
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 ethylene-tetrafluoroethylene copolymer antistatic 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, the ethylene-tetrafluoroethylene copolymer antistatic layer is provided with outside described first
Some first strip grooves extended along its length on surface, the ethylene-tetrafluoroethylene copolymer antistatic layer is provided with
Some second strip grooves extended along its length on the 3rd outer surface.
In one of the embodiments, some first strip grooves are uniformly distributed on first outer surface, institute
Some second strip grooves are stated to be uniformly distributed on the 3rd outer surface.
In one of the embodiments, the gross area of some first strip grooves and the area of first outer surface
The ratio between be (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 of the embodiments, the ethylene-tetrafluoroethylene copolymer antistatic layer is provided with outside described first
Some first strip bulges extended along its length on surface, the ethylene-tetrafluoroethylene copolymer antistatic layer is provided with
Some second strip bulges extended along its length on the 3rd outer surface.
In one of the embodiments, first outer surface is provided with two first strip bulges, two first bar shaped
Projection 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 what the 3rd outer surface connected with the 4th outer surface
Both sides.
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 ethylene-tetrafluoroethylene copolymer antistatic 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 ethylene-tetrafluoroethylene copolymer antistatic layer has some strip grooves extended along the volume pin body length direction
And/or strip bulge so that there is air between battery winding needle and battery diaphragm, so that battery winding needle is more drawn out easily.
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, and elastic cord breaker is provided with the connecting portion,
The battery winding needle also includes the ethylene-tetrafluoroethylene copolymer antistatic layer that covering is arranged at the volume pin body outer surface,
The ethylene-tetrafluoroethylene copolymer antistatic layer has some strip grooves extended along the volume pin body length direction
And/or strip bulge.
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 is also arranged at the volume pin body outer surface including covering
Ethylene-tetrafluoroethylene copolymer antistatic layer 12.
In the present embodiment, ethylene-tetrafluoroethylene copolymer is coated on volume pin body surface, due to ethylene-tetrafluoroethylene
The coefficient of friction of copolymer material is extremely low, with lubrication, therefore can solve to rub between battery winding needle and battery diaphragm
The problem of power is excessive.In addition, for the battery using gelatin membrane, the poly- inclined difluoro second coated due to gelatin membrane surface
Alkene (PVDF) material contains fluorine element, and the ethylene-tetrafluoroethylene copolymer antistatic layer of above-mentioned battery winding needle is equally containing fluorine member
Element, both quite, are not likely to produce electrostatic, therefore can also solve between volume pin and battery diaphragm to charge attraction ability during friction
Electrostatic problem.
In one embodiment, the ethylene-tetrafluoroethylene copolymer antistatic layer has some along the volume pin body
The strip groove and/or strip bulge of length direction extension.In such manner, it is possible to avoid ethylene-tetrafluoroethylene copolymer antistatic layer
It is seamlessly connected with battery diaphragm so that after electric core winding completion, due to there is gap between battery winding needle and battery diaphragm,
Battery winding needle is set more to be drawn out easily.
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 thickness of the ethylene-tetrafluoroethylene copolymer antistatic layer and the volume pin body
The ratio between thickness is 0.02~0.5:1.For example, the thickness of the ethylene-tetrafluoroethylene copolymer antistatic layer and the volume pin sheet
The ratio between thickness of body is 0.06~0.35:1.And for example, the thickness of the ethylene-tetrafluoroethylene copolymer antistatic layer and the volume
The ratio between thickness of pin 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 ethylene-tetrafluoroethylene copolymer antistatic layer is deducted, obtains rolling up the size of pin body；According to volume pin body
Volume pin body is made using predetermined material in size, and volume pin body is made for example with metal material；Second is coated on volume pin body
Alkene-TFE copolymer antistatic layer, obtains finished product volume pin, i.e., above-mentioned battery winding needle.Above-mentioned battery winding needle is used for battery
Electric core 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 ethylene-tetrafluoroethylene copolymer antistatic layer
Covering 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 112c.The ethylene-tetrafluoroethylene copolymer antistatic layer position corresponding with the lug neck is provided with out
Mouth 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 ethylene-tetrafluoroethylene copolymer antistatic layer is provided with described
Some first strip grooves extended along its length on first outer surface, the ethylene-tetrafluoroethylene copolymer antistatic layer
It is provided with some second strip grooves extended along its length on the 3rd outer surface.First strip groove and Article 2
Connected in star can make to fill air between ethylene-tetrafluoroethylene copolymer antistatic layer and battery diaphragm, it is to avoid ethene-tetrafluoro second
Alkene copolymer antistatic 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 ethylene-tetrafluoroethylene copolymer antistatic layer is provided with described
Some first strip bulges extended along its length on first outer surface, the ethylene-tetrafluoroethylene copolymer antistatic layer
It is provided with some second strip bulges extended along its length on the 3rd outer surface.First strip bulge and Article 2
Shape projection can make to fill air between ethylene-tetrafluoroethylene copolymer antistatic layer and battery diaphragm, it is to avoid ethene-tetrafluoro second
Alkene copolymer antistatic 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, and the battery winding needle also includes covering
Lid is arranged at the ethylene-tetrafluoroethylene copolymer antistatic layer of the volume pin body outer surface, the ethylene-tetrafluoroethylene copolymerization
Thing antistatic layer has some strip grooves and/or strip bulge extended along the volume pin body length direction.
2. battery winding needle as claimed in claim 1, it is characterised in that the ethylene-tetrafluoroethylene copolymer antistatic layer
The ratio between thickness of thickness 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 ethylene-tetrafluoroethylene copolymer antistatic layer
The ratio between thickness of thickness 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 ethylene-tetrafluoroethylene copolymer antistatic layer covering are set
It is placed 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 the ethylene-tetrafluoroethylene copolymer antistatic layer is set
It is equipped with some first strip grooves extended along its length on first outer surface, the ethylene-tetrafluoroethylene copolymerization
Thing antistatic layer is provided with some second strip grooves extended along its length on the 3rd outer surface.
6. battery winding needle as claimed in claim 5, it is characterised in that some first strip grooves are in first appearance
It is uniformly distributed on face, some second strip grooves are uniformly distributed on the 3rd outer surface.
7. battery winding needle as claimed in claim 5, it is characterised in that the gross area of some first strip grooves and described
The area ratio of first outer surface is (0.1~0.45)：1, outside the gross area and the described 3rd of some second strip grooves
The area ratio on surface is (0.1~0.45)：1.
8. battery winding needle as claimed in claim 4, it is characterised in that the ethylene-tetrafluoroethylene copolymer antistatic layer is set
It is equipped with some first strip bulges extended along its length on first outer surface, the ethylene-tetrafluoroethylene copolymerization
Thing antistatic layer is provided with some second strip bulges extended along its length on the 3rd outer surface.
9. battery winding needle as claimed in claim 8, it is characterised in that it is convex that first outer surface is provided with two first bar shapeds
Rise, two first strip bulge is respectively arranged at the both sides that first outer surface connects with second outer surface；It is described
3rd outer surface is provided with two second strip bulges, and two second strip bulge is respectively arranged at the 3rd outer surface and institute
State the both sides that the 4th outer surface connects.
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 |
|---|---|---|---|
| CN201621426197.6U CN206564302U (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 |
|---|---|---|---|
| CN201621426197.6U CN206564302U (en) | 2016-12-23 | 2016-12-23 | Battery winding needle and electricity core winding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206564302U true CN206564302U (en) | 2017-10-17 |
Family
ID=60029009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621426197.6U Expired - Fee Related CN206564302U (en) | 2016-12-23 | 2016-12-23 | Battery winding needle and electricity core winding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206564302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390637A (en) * | 2018-11-27 | 2019-02-26 | 深圳市万德自动化科技有限公司 | A kind of lithium battery electric core ion wind destatics blanking rolling needle mechanism |
-
2016
- 2016-12-23 CN CN201621426197.6U patent/CN206564302U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390637A (en) * | 2018-11-27 | 2019-02-26 | 深圳市万德自动化科技有限公司 | A kind of lithium battery electric core ion wind destatics blanking rolling needle mechanism |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20191223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |