CN207896226U - The production line of dry process PVDF diaphragm cell pole piece constituent elements - Google Patents
The production line of dry process PVDF diaphragm cell pole piece constituent elements Download PDFInfo
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- CN207896226U CN207896226U CN201820117196.6U CN201820117196U CN207896226U CN 207896226 U CN207896226 U CN 207896226U CN 201820117196 U CN201820117196 U CN 201820117196U CN 207896226 U CN207896226 U CN 207896226U
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- pvdf
- diaphragms
- pole piece
- production line
- constituent element
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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 technical field of energy storage, provide a kind of production line of dry process PVDF diaphragm cells pole piece constituent element, including electromagnetic wave heating device, and the electromagnetic wave heating device has the heating interval passed through for PVDF diaphragms；The production line further includes the driving device for driving the PVDF diaphragms to pass through the heating interval, and the manipulator for being respectively placed in positive/negative plate on two opposite faces of the PVDF diaphragms, the manipulator be located at the exit of the heating interval.The utility model heats PVDF diaphragms by using the mode of electromagnetic wave heating, it can quickly heat, so that PVDF diaphragms are had viscosity by thermal softening, it is pasted for positive/negative plate, PVDF diaphragms can significantly be shortened and prepare the time of battery pole piece constituent element, simultaneously as being that electromagnetic wave directly acts on diaphragm PVDF coatings, its generation area can reduce the thermal losses in PVDF diaphragm thermal histories with very little.
Description
Technical field
The utility model is related to technical field of energy storage, the specially production of dry process PVDF diaphragm cells pole piece constituent element
Line.
Background technology
Diaphragm is the important component part of lithium ion battery, its role is to which positive and negative anodes are isolated, prevents positive and negative anodes short-circuit, together
When have the function of ion conducting, so that electrochemical reaction is smoothly carried out.The performance of diaphragm follows the security performance of battery
Ring performance, high rate performance, absorbent etc. have important influence.In recent years, the technology of preparing of diaphragm is widely paid close attention to.Every
The preparation method of film has two kinds of a dry and wet, and main material is polypropylene or polyethylene, but the diaphragm of this kind of material
Porosity is low, and fusing point is relatively low, and bad mechanical strength, imbibition rate is relatively low, and security performance is also poor.In order to improve the performance of diaphragm, every
Preparing for film adulterates filler, carries out modifying the means such as coating being the hot spot studied on surface in material, and wherein uses PVDF
The diaphragm of coating is the hot spot of current research.
PVDF is a kind of white powder crystalline polymer that repetitive unit is-CH2-CF2-, relative density 1.75-
1.78, glass transition temperature is -39 °, 180 ° of fusing point, and heat decomposition temperature is 350 °, and it is -30 ° -150 ° that temperature, which is used for a long time,.From molten
The range of work of point to decomposition temperature is wide, and processing temperature is low, and melting viscosity is small, is easily worked.Containing very on PVDF polymer chains
Strong pushes away electronics base-CF2, and higher ε=8.4 of dielectric constant of PVDF, may advantageously facilitate lithium salts and more fully dissolves, and increases and carries
Flow sub- concentration.
So that diaphragm is had certain cementability after coating PVDF on general diaphragm, can ensure positive and negative anodes pole piece
It is formed and is better contacted between diaphragm, be conducive to the normal performance of battery capacity.
The adhesive effect that PVDF diaphragms have been formed with positive/negative plate can be well by thermal softening dependent on PVDF diaphragms coating.
Generally use heat exchange pattern in the prior art needs to dry by the heat of long period, causes great energy in actually preparing
Consumption and waste of time.
Utility model content
The purpose of this utility model is to provide a kind of production lines of dry process PVDF diaphragm cells pole piece constituent element, pass through
PVDF diaphragms are heated using electromagnetic wave heating device, can quickly be heated, it will be apparent that shorten PVDF diaphragms and prepare battery pole piece
The time of constituent element, simultaneously as being that electromagnetic wave directly acts on diaphragm PVDF coatings, generation area can be reduced with very little
Thermal losses in PVDF diaphragm thermal histories.
To achieve the above object, the utility model embodiment provides the following technical solutions：A kind of dry process PVDF diaphragms
The production line of battery pole piece constituent element, including electromagnetic wave heating device, the electromagnetic wave heating device has to be passed through for PVDF diaphragms
Heating interval；The production line further includes the driving device for driving the PVDF diaphragms to pass through the heating interval, with
And the manipulator for being respectively placed in positive/negative plate on two opposite faces of the PVDF diaphragms, the manipulator are located at institute
State the exit of heating interval.
Further, the electromagnetic wave heating device includes microwave applicator, and the microwave applicator, which has, supplies the PVDF
Diaphragm by microwave heating section.
Further, the electromagnetic wave heating device includes infrared heater, and the infrared heater has described in confession
PVDF diaphragms by infrared heating section.
Further, further include for providing pressure and driving the manipulator that positive/negative plate is pressed on to the PVDF respectively
Press device on two opposite faces of diaphragm.
Further, the manipulator includes two pieces of surface plates of face setting.
Further, the press device includes for driving the actuator that two pieces of surface plates are close and mutually squeeze.
Further, the actuator is cylinder or motor.
Further, the driving device include the winder that can be connect with PVDF diaphragms one end and can with it is described
The connection of the PVDF diaphragm other ends send volume machine, the heating interval to be located at described send between volume machine and the winder.
Compared with prior art, the utility model has the beneficial effects that：
1, PVDF diaphragms are heated by using the mode of electromagnetic wave heating, can quickly heated so that PVDF diaphragms are heated
Softening has viscosity, is pasted for positive/negative plate, can significantly shorten the time that PVDF diaphragms prepare battery pole piece constituent element, together
When, due to being that electromagnetic wave directly acts on diaphragm PVDF coatings, generation area can be reduced PVDF diaphragms and be heated with very little
Thermal losses in journey.
2, pressing force is provided using press device, positive/negative plate can be convenient for rapid with PVDF diaphragms and be bonded well.
Description of the drawings
Fig. 1 is a kind of production line for dry process PVDF diaphragm cells pole piece constituent element that the utility model embodiment provides
Structural schematic diagram；
In reference numeral：1-PVDF diaphragms；2- anode pole pieces；3- cathode pole pieces；4- electromagnetic wave heating devices.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The all other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, the utility model embodiment provides a kind of production of 1 battery pole piece constituent element of dry process PVDF diaphragms
Line, it includes electromagnetic wave heating device 4, and the electromagnetic wave heating device 4 has the heating interval passed through for PVDF diaphragms；Institute
It further includes the driving device for driving the PVDF diaphragms 1 to pass through the heating interval to state production line, and being used for will be positive and negative
Pole piece is respectively placed in the manipulator on two opposite faces of the PVDF diaphragms 1, and the manipulator is located at the heating interval
Exit.PVDF diaphragms 1 are heated by using the mode of electromagnetic wave heating, can quickly be heated so that PVDF diaphragms are heated soft
Changing has viscosity, is pasted for positive/negative plate, can significantly shorten the time that PVDF diaphragms 1 prepare battery pole piece constituent element, meanwhile,
Due to being that electromagnetic wave directly acts on diaphragm PVDF coatings, generation area can reduce 1 thermal histories of PVDF diaphragms with very little
In thermal losses.In the present embodiment, PVDF diaphragms 1 at the uniform velocity pass through electromagnetic wave heating device 4 along the direction of b arrows in Fig. 1
Heating region (i.e. inside electromagnetic wave heating device 4), then anode pole piece 2 and cathode pole piece 3 are in the outlet of heating region
Anode pole piece 2 is put along the direction of c arrows in Fig. 1 using manipulator after PVDF diaphragms 1 come out from heating region at place
Set on one of PVDF diaphragms 1 face, meanwhile, by cathode pole piece 3 along the direction of b arrows in Fig. 1 be placed on PVDF every
On the another side of film 1, you can complete the preparation of battery pole piece constituent element.
Optimize above-mentioned electromagnetic wave heating device 4, the electromagnetic wave heating device 4 includes microwave applicator, and the microwave adds
Hot utensil have for the PVDF diaphragms 1 by microwave heating section.PVDF diaphragms 1 are carried out by the way of microwave heating
Heating, significantly shortens the time that PVDF diaphragms 1 prepare battery pole piece constituent element, together than existing heat transfer mode of heating
When, due to being that microwave directly acts on diaphragm PVDF coatings, generation area can be reduced PVDF diaphragms 1 and be heated with very little
Thermal losses in journey.
Continue to optimize above-mentioned electromagnetic wave heating device 4, the electromagnetic wave heating device 4 includes infrared heater, described
Infrared heater have for the PVDF diaphragms 1 by infrared heating section.By the way of infrared heating come pair
PVDF diaphragms 1 are heated, and significantly shortening PVDF diaphragms 1 than existing heat transfer mode of heating prepares battery pole piece group
The time of member, simultaneously as being that infrared ray directly acts on diaphragm PVDF coatings, generation area can be reduced with very little
Thermal losses in 1 thermal histories of PVDF diaphragms.
As the prioritization scheme of the utility model embodiment, this production line further includes for providing pressure and driving the machine
Anode pole piece 2 and cathode pole piece 3 are pressed on the press device on two opposite faces of the PVDF diaphragms by tool hand respectively.Using by
Pressure device provides pressing force, and positive/negative plate can be convenient for rapid with PVDF diaphragms 1 and be bonded well.
As the prioritization scheme of the utility model embodiment, manipulator includes two pieces of surface plates of face setting, and two pieces flat
Panel can hold up anode pole piece 2 and cathode pole piece 3 respectively, and two panels pole piece is then placed into the sticking PVDF diaphragms of tool again
On 1.In the present embodiment, the size Control of two pieces of surface plates can completely cover the positive and negative anodes pole piece constituent element to be pressed
Size, when pole piece and PVDF diaphragms in conjunction with after the fitting preliminary due to the strong electrostatic interaction of PVDF diaphragms, move later
It is pressed between two pieces of surface plates.
Optimize above-mentioned press device, the press device includes that the press device includes for driving two pieces of planes
Plate is close and the actuator that mutually squeezes.In the present embodiment, the projection of two pieces of surface plates overlaps, and parallel to each other, using drive
Moving part provides the power of movement to them.
Optimize above-mentioned actuator, which can be cylinder, can also be motor, and power is provided by them, to
Drive two pieces of surface plate movements.Preferably, the press device, i.e. actuator provide pressure range 0.1Mpa-0.5Mpa it
Between.
As the prioritization scheme of the utility model embodiment, electromagnetic wave heating device frequency range is in 300MHZ-300GHZ
Between.
As the prioritization scheme of the utility model embodiment, driving device includes that can be connect with PVDF diaphragms one end
Winder and what can be connect with the PVDF diaphragms other end send volume machine, the heating interval are located at the volume machine and described of sending
Between winder.PVDF diaphragm movements can be easily driven using volume machine and winder is sent.
The method of dry process PVDF diaphragm cell pole piece constituent elements specifically includes：S1 prepares anode pole piece 2 and cathode pole
Piece 3；S2 is heated PVDF diaphragms 1 by the way of electromagnetic wave heating, and the anode pole piece 2 and the cathode pole piece 3 is distinguished
To get to the pole piece constituent element under original state on two opposite faces of pressing PVDF diaphragms 1 after the heating；S3, will be initial
Pole piece constituent element under state is cut as required to get to finished product pole piece constituent element.In the present embodiment, anode pole piece 2 and negative
Prepared by the mode that coating may be used in pole pole piece 3, can also be prepared by the way of filtering.In the process for preparing electrode diaphragm
In, and since active material is divided into positive electrode active materials and negative electrode active material, positive diaphragm and cathode membrane can be obtained, wherein
Positive electrode active materials be cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate or lithium vanadate, negative electrode active material be graphite,
Lithium titanate, MCMB (carbonaceous mesophase spherules), carbon silicon or activated carbon, their quality accountings respectively in respective pole piece are
65%-99.7%.In the present embodiment, it is polarity point in material that the electromagnetic wave heating technology used, which is with material absorption microwave energy,
Son with electromagnetism field interactions as a result, outside plus alternating electromagnetic field effect under, in material polar molecule polarization and with additional friendship
The Electromagnetic Field change of polarity and alternation are orientated, and so numerous polar molecules makes electromagnetic energy turn because of frequent mutual frictional dissipation
The relevant technologies that thermal energy etc. carrys out heated material for principle are turned to, PVDF diaphragms 1, energy are heated by using the mode of electromagnetic wave heating
Enough quickly heating, it will be apparent that shorten PVDF diaphragms 1 and prepare the time of battery pole piece constituent element, simultaneously as being that electromagnetic wave is direct
Diaphragm PVDF coatings are acted on, generation area can reduce the thermal losses in 1 thermal histories of PVDF diaphragms with very little.
As the prioritization scheme of the utility model embodiment, in the S2 steps, generated using electromagnetic wave heating device 4
Electromagnetic wave, and PVDF diaphragms 1 are heated, specific mode of heating is：Make the PVDF diaphragms 1 at the uniform velocity by the electromagnetism
The heating region of Wave heating device 4, after heating region of the PVDF diaphragms 1 by the electromagnetic wave heating device 4 immediately
By the anode pole piece 2 and the pressing of the cathode pole piece 3 on two opposite faces of the PVDF diaphragms 1.In the present embodiment, electric
The frequency of use range of magnetic wave is in 300MHZ-3.8 × 105Between GHZ, using the electromagnetic wave in this frequency range to PVDF every
Film 1 is heated, and corresponding positive/negative plate is bonded in PVDF diaphragms 1 by the PVDF coatings of membrane surface rapidly after by thermal softening
On two opposite faces.Repeated using above method, to prepare greater number of pole piece constituent element, basic pole piece constituent element warp
Cross the superposition of identical technique, the former battery core of bigger thickness can be prepared into, so be prepared into different-thickness using PVDF coatings every
The lithium ion battery of film effect.
As the prioritization scheme of the utility model embodiment, in the S2 steps, giving pressure using press device will
The anode pole piece 2 and the cathode pole piece 3 are pressed respectively on two opposite faces of the PVDF diaphragms 1 after the heating.Using
This press device provides pressing force, and positive/negative plate can be convenient for rapid with PVDF diaphragms 1 and be bonded well.
Optimize above-mentioned electromagnetic wave heating mode, is refined as microwave heating and infrared heating.It is specific implementation below
Example.
Embodiment 1：The power of microwave heating is adjusted to desired value, value is between 300MHZ-300GHZ.Make 120mm
It is at the uniform velocity the microwave heating region of 100mm by length that the PVDF of width, which coats diaphragm with 0.1m/s, by reactive coating size point
Not Wei 50mm × 118mm negative plate and 49mm × 117mm positive plate apart from computer heating control region 50mm position align
Be tightly attached on the PVDF diaphragms 1 by thermal softening, diaphragm lower edges are more than the respective 1mm in negative plate edge.Pass through press device
Pole piece constituent element 150N pressure is given under at the uniform velocity state keeps 2S.Molding pole piece constituent element is cut, diaphragm edge distance
The distance at negative plate edge is both sides respectively 1.5mm.In the present embodiment, the power value of microwave heating is bigger, passes through microwave
The speed of heating region can be faster, among these, the power of microwave, the speed and heated time of the traveling of PVDF diaphragms 1
It adjusts.
Embodiment 2：The power of infrared heating is adjusted to desired value, preferably value is 3435cm-1、 3026cm-1、
2954cm-1、1400cm-1、1210cm-1、1176cm-1、1070cm-1、975cm-1、885cm-1、 853cm-1、840cm-1、
795cm-1、763cm-1、741cm-1、613cm-1Or 602cm-1One or more of respective wavelength light heats.Make 120mm width
PVDF to coat diaphragm with 0.1m/s be at the uniform velocity the microwave heating region of 100mm by length, be respectively by reactive coating size
The negative plate of 50mm × 118mm and the positive plate of 49mm × 117mm are in the tight of the position contraposition apart from computer heating control region 50mm
It is attached on the PVDF diaphragms 1 by thermal softening, diaphragm lower edges are more than negative plate edge respectively 1mm.By press device even
Pole piece constituent element 150N pressure is given under fast state keeps 2S.Molding pole piece constituent element is cut, diaphragm edge is apart from cathode
The distance at piece edge is both sides respectively 1.5mm.In the present embodiment, the power value of infrared heating is bigger, by microwave plus
The speed of thermal region can be faster.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element, it is characterised in that：Including electromagnetic wave heating device,
The electromagnetic wave heating device has the heating interval passed through for PVDF diaphragms；The production line further includes described for driving
PVDF diaphragms pass through the driving device of the heating interval, and for positive/negative plate to be respectively placed in the PVDF diaphragms
Manipulator on two opposite faces, the manipulator are located at the exit of the heating interval.
2. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element as described in claim 1, it is characterised in that：Institute
It includes microwave applicator to state electromagnetic wave heating device, the microwave applicator have for the PVDF diaphragms by microwave heating
Section.
3. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element as described in claim 1, it is characterised in that：Institute
It includes infrared heater to state electromagnetic wave heating device, the infrared heater have for the PVDF diaphragms by it is infrared
Line heating interval.
4. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element as described in claim 1, it is characterised in that：Also
Include for providing pressure and driving the manipulator that positive/negative plate is pressed on to two opposite faces of the PVDF diaphragms respectively
Press device.
5. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element as claimed in claim 4, it is characterised in that：Institute
State two pieces of surface plates that manipulator includes face setting.
6. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element as claimed in claim 5, it is characterised in that：Institute
It includes for driving the actuator that two pieces of surface plates are close and mutually squeeze to state press device.
7. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element as claimed in claim 6, it is characterised in that：Institute
It is cylinder or motor to state actuator.
8. a kind of production line of dry process PVDF diaphragm cells pole piece constituent element as described in claim 1, it is characterised in that：Institute
Driving device is stated to include the winder that can be connect with PVDF diaphragms one end and can connect with the PVDF diaphragms other end
Send volume machine, the heating interval is located at described send between volume machine and the winder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820117196.6U CN207896226U (en) | 2018-01-24 | 2018-01-24 | The production line of dry process PVDF diaphragm cell pole piece constituent elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820117196.6U CN207896226U (en) | 2018-01-24 | 2018-01-24 | The production line of dry process PVDF diaphragm cell pole piece constituent elements |
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| Publication Number | Publication Date |
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| CN207896226U true CN207896226U (en) | 2018-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365266A (en) * | 2018-01-24 | 2018-08-03 | 柔电（武汉）科技有限公司 | The method and production line of dry process PVDF diaphragm cell pole piece constituent elements |
| CN114824429A (en) * | 2022-06-27 | 2022-07-29 | 江苏时代新能源科技有限公司 | Apparatus and method for preparing electrode assembly |
-
2018
- 2018-01-24 CN CN201820117196.6U patent/CN207896226U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365266A (en) * | 2018-01-24 | 2018-08-03 | 柔电（武汉）科技有限公司 | The method and production line of dry process PVDF diaphragm cell pole piece constituent elements |
| CN114824429A (en) * | 2022-06-27 | 2022-07-29 | 江苏时代新能源科技有限公司 | Apparatus and method for preparing electrode assembly |
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Effective date of registration: 20180928 Address after: 430000 room 402, 2-03 402, Optics Valley core center, 303 Optics Valley Road, East Lake, Wuhan, Hubei. Co-patentee after: SHENZHEN SOFT POWER TECHNOLOGY Co.,Ltd. Patentee after: ROUDIAN (WUHAN) TECHNOLOGY CO.,LTD. Address before: 430000 Optics Valley road 303, Optics Valley New Technology Development Zone, Wuhan, Hubei. Room 402, 2-03 402, core center, Optics Valley. Patentee before: ROUDIAN (WUHAN) TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20230504 Address after: 430070 Room 01, Floor 4, Building 4, Phase III, Wuhan Optics Valley Electronics Industrial Park, No. 28, Gaoxin 4th Road, Fozuling Street, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: ROUDIAN (WUHAN) TECHNOLOGY CO.,LTD. Address before: 430000 Optics Valley road 303, Optics Valley New Technology Development Zone, Wuhan, Hubei. Room 402, 2-03 402, core center, Optics Valley. Patentee before: ROUDIAN (WUHAN) TECHNOLOGY CO.,LTD. Patentee before: SHENZHEN SOFT POWER TECHNOLOGY Co.,Ltd. |
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