CN207353362U - Lithium battery diaphragm drying unit - Google Patents
Lithium battery diaphragm drying unit Download PDFInfo
- Publication number
- CN207353362U CN207353362U CN201721527646.0U CN201721527646U CN207353362U CN 207353362 U CN207353362 U CN 207353362U CN 201721527646 U CN201721527646 U CN 201721527646U CN 207353362 U CN207353362 U CN 207353362U
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- CN
- China
- Prior art keywords
- lithium battery
- battery diaphragm
- box body
- drying unit
- dryer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of lithium battery diaphragm drying unit, including rollable lithium battery diaphragm, spin coating machine, dryer, flowmeter, can flow automatic regulation liquid pump and flow container, the dryer has two, the lithium battery diaphragm is passed through from the centre of two dryers, the dryer includes a box body, box body is hollow, box body closes on a side opening of lithium battery diaphragm, opening fixes an arc heating plate prominent to lithium battery diaphragm, the arc heating plate is made of metal, fixed heating unit on the inside of arc heating plate, heating unit uniform heat release on the longitudinal direction of arc heating plate, heating unit is electric hot plate, electric hot plate height is identical with arc heating plate inside height.The drying unit can carry out gradient heating and cooling to membrane, improve diaphragm quality.
Description
Technical field
It the utility model is related to lithium battery production field, and in particular to the production equipment of septum for lithium ion battery.
Background technology
Four big critical materials of lithium ion battery are positive electrode, negative material, electrolyte and membrane.Membrane it is main
Function is that isolation and prevents electronics from passing through at positive and negative anodes, at the same can allow ion by so that complete in charge and discharge process lithium from
Quick transmission of the son between positive and negative anodes.The quality of membrane properties directly affects the internal resistance of cell, discharge capacity, recycles the longevity
The quality of life and battery safety.Membrane is thinner, porosity is higher, and the internal resistance of battery is smaller, and high-rate discharge ability is just
Better.
The most widely used at present is the polyolefin porous membrane of high-strength thin-film, in the quality side of progressive lifting membrane
The main method main at present in face is to coat high-purity micrometer/nanometer level material on the top layer of membrane.As lithium ion battery
The membrane of one of four big materials, although not participating in the electrochemical reaction of battery directly, but inside lithium ion cell is crucial
Component, capacity, cycle performance and charging and discharging currents density and the security of battery with battery have direct relation.Cause
The performance improvement of this membrane plays an important role the comprehensive performance for improving lithium ion battery.
At present, the lithium ion battery separator coating machine being coated to membrane is mostly squash type coating, electrostatic spraying, without gas
Spraying and paint spraying, it is penetrating that squash type is unfavorable for ion, and electrostatic spraying or serious without gas or Air spraying, dust pollution,
Slurry wastes seriously, and due to moisture content or oil component in lithium battery isolation membrane slurry, if spin coating to lithium battery is not isolated
Slurry on film carries out heating, drying, it will seriously affects the work efficiency of slurry spin coating.
Chinese patent in the prior art（CN201621309259.5, a kind of lithium battery isolation membrane slurry spin coating drying system）
Disclose following technical scheme include rollable lithium battery diaphragm, spin coating machine, dryer, flowmeter, can flow automatic regulation
Liquid pump and flow container, the spin coating machine is located at lithium battery diaphragm and unreels place, the spin coating face of the spin coating machine and lithium battery diaphragm
Parallel, slurry is spun coating to lithium battery diaphragm by spinning coating face, and the dryer is located at the winding of lithium battery diaphragm, described
Lithium battery diaphragm passes through among the dryer, and the dryer includes heater strip and ventilation fan, the heater strip and ventilation
The both sides in the dryer, the port of export of the flow container are connected fan with the input end of liquid pump respectively, the port of export of the liquid pump with
The input end of flowmeter is connected, and import of the port of export of the flowmeter with spinning coating machine is connected, the bottom of the spin coating machine and liquid
The arrival end of tank is connected.
In actual use, it passes to the heat of membrane and is unable to control this drying unit, is dried to membrane
When there is no heat gradient, cause heating easily surface rapid draing occur, the situation that inside is not completely dried also, such case is held
Easily lead to membrane surface and micro-crack occur, meanwhile, sprayed on material easily comes off or falls chip.
The content of the invention
The purpose of this utility model is to provide it is a kind of to membrane heating evenly, be less prone to thermal stress cause to occur it is micro-
Crackle or the lithium battery diaphragm drying unit to come off.
To achieve these goals, the utility model includes, rollable lithium battery diaphragm, spin coating machine, dryer, flow
Meter, can flow automatic regulation liquid pump and flow container, the spin coating machine is located at lithium battery diaphragm and unreels place, and the spin coating machine is got rid of
Painting face is parallel with lithium battery diaphragm, and slurry is spun coating to lithium battery diaphragm by spinning coating face, the dryer be located at lithium battery every
At the winding of film, the lithium battery diaphragm passes through among the dryer, the port of export of the flow container and the input end of liquid pump
It is connected, the port of export of the liquid pump is connected with the input end of flowmeter, the port of export of the flowmeter and the import phase for spinning coating machine
Even, the bottom of the spin coating machine is connected with the arrival end of flow container, it is characterised in that the dryer has two, the lithium battery
Membrane is passed through from the centre of two dryers, and the dryer includes a box body, and box body is hollow, and box body closes on lithium battery diaphragm
A side opening, opening fixes an arc heating plate prominent to lithium battery diaphragm, and the arc heating plate is by made of metal
Into fixed heating unit on the inside of arc heating plate, heating unit uniform heat release, heating unit on the longitudinal direction of arc heating plate are
Electric hot plate, electric hot plate height are identical with arc heating plate inside height.Arc heating plate and each position of arc heating plate are set
Volume temperature it is essentially identical, using the difference of the distance between arc heating plate and lithium battery diaphragm, form heat gradient and drop
Warm gradient, membrane first pass through low-heat and take hot-zone in entrance, finally enter high hot-zone, be gradually heated up, be that coating is gradually heated,
Prevent crackle and obscission.Temperature-fall period further prevents crackle or de- on the contrary, can avoid receiving extremely cold
Fall.
Further, a spiral handspike is set outside the box body, and spiral handspike is horizontally disposed with, and push end is fixed with box body
Connection, can drive box body to become close or remote from lithium battery diaphragm.Spiral handspike can be conveniently adjusted between dryer and membrane away from
From can be that the scope of application of drying equipment is wider.
Further, a discharge pipe is fixed on the box bottom, the air outlet of discharge pipe is dried to lithium battery diaphragm,
And air-out direction and the tangential of arc heating plate, the box body is interior to set the first wind turbine, the first fan outlet and outlet air
Pipe connects.Can so cross-ventilation be carried out to membrane, improve the efficiency of heating surface.
Preferably, the discharge pipe is Telescopic flexible pipe.Bellows is for the ease of the flexible of pipeline.
Further, an induced duct is fixed on the top surface of the box body, the air inlet of induced duct is directed toward lithium battery diaphragm
And with the tangential of arc heating plate.Induced duct can absorb dust.
Preferably, the induced duct is Telescopic flexible pipe.
Further side, the induced duct are connected with the air inlet of a filter, the air inlet of air-introduced machine and filtering
The air outlet connection of device.
Brief description of the drawings
Fig. 1 is utility model diagram.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of lithium battery diaphragm drying unit, including rollable lithium battery diaphragm 20, spin coating machine 40, baking
Dry machine 30, flowmeter, can flow automatic regulation liquid pump and flow container, the spin coating machine 40 is located at lithium battery diaphragm 20 and unreels
Place, the spin coating face of the spin coating machine 40 is parallel with lithium battery diaphragm 20, and slurry is spun coating to lithium battery diaphragm 20 by spinning coating face,
The dryer 30 is located at the winding of lithium battery diaphragm 20, and the lithium battery diaphragm 20 passes through among the dryer 30,
The port of export of the flow container is connected with the input end of liquid pump, and the port of export of the liquid pump is connected with the input end of flowmeter, described
Import of the port of export of flowmeter with spinning coating machine is connected, and the bottom of the spin coating machine 40 is connected with the arrival end of flow container, its feature
It is, the dryer 30 there are two, and the lithium battery diaphragm 20 is passed through from the centre of two dryers 30, the dryer 30
Including a box body 39, box body 39 is hollow, and box body 39 closes on a side opening of lithium battery diaphragm 20, and opening fixes one to lithium
The arc heating plate 32 that battery diaphragm 20 protrudes, the arc heating plate 32 are made of metal, and the inner side of arc heating plate 32 is fixed
Heating unit 31, the uniform heat release on the longitudinal direction of arc heating plate 32 of heating unit 31, heating unit are electric hot plate, and electric hot plate is high
Degree is identical with 32 inside height of arc heating plate.
Preferred embodiment, the box body 39 set a spiral handspike 38 outside, and spiral handspike 38 is horizontally disposed, push
End is fixedly connected with box body 39, and box body 39 can be driven to become close or remote from lithium battery diaphragm 20.
Preferred embodiment, fixes a discharge pipe 33 on 39 bottom surface of box body, and the air outlet of discharge pipe 33 is to lithium
Battery diaphragm 20 is dried, and air-out direction and the tangential of arc heating plate 32, and the first wind turbine 34 is set in the box body 39,
First wind turbine, 34 air outlet is connected with discharge pipe 33.
Preferred embodiment, the discharge pipe 33 are Telescopic flexible pipe.
Preferred embodiment, fixes an induced duct 35 on the top surface of the box body 39, the air inlet of induced duct 35 refers to
To lithium battery diaphragm 20 and with the tangential of arc heating plate 32.
Preferred embodiment, the induced duct 35 is Telescopic flexible pipe.
Preferred embodiment, the induced duct 35 are connected with the air inlet of a filter 36, air-introduced machine 37
Air inlet is connected with the air outlet of filter 36.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the present invention, for ability
For field technique personnel, various modifications and changes may be made to the present invention.It is all the utility model spirit and principle in, done
Any modification, equivalent substitution, improvement and etc., should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of lithium battery diaphragm drying unit, including rollable lithium battery diaphragm（20）, spin coating machine（40）, dryer
（30）, flowmeter, can flow automatic regulation liquid pump and flow container, the spin coating machine（40）Positioned at lithium battery diaphragm（20）Unreel
Place, the spin coating machine（40）Spin coating face and lithium battery diaphragm（20）Parallel, slurry is spun coating to lithium battery diaphragm by spinning coating face
（20）On, the dryer（30）Positioned at lithium battery diaphragm（20）Winding at, the lithium battery diaphragm（20）From the drying
Machine（30）Centre passes through, and the port of export of the flow container is connected with the input end of liquid pump, the port of export of the liquid pump and flowmeter
Input end is connected, and import of the port of export of the flowmeter with spinning coating machine is connected, the spin coating machine（40）Bottom and flow container
Arrival end is connected, it is characterised in that the dryer（30）There are two, the lithium battery diaphragm（20）From two dryers（30）
Centre pass through, the dryer（30）Including a box body（39）, box body（39）It is hollow, box body（39）Close on lithium battery diaphragm
（20）A side opening, opening fixes one to lithium battery diaphragm（20）Prominent arc heating plate（32）, the arc adds
Hot plate（32）It is made of metal, arc heating plate（32）Heating unit is fixed in inner side（31）, heating unit（31）Heated in arc
Plate（32）Longitudinal direction on uniform heat release, heating unit is electric hot plate, electric hot plate height and arc heating plate（32）Inside height phase
Together.
2. lithium battery diaphragm drying unit according to claim 1, it is characterised in that the box body（39）It is outer to set one
Spiral handspike（38）, spiral handspike（38）It is horizontally disposed, push end and box body（39）It is fixedly connected, box body can be driven（39）Convergence
Or away from lithium battery diaphragm（20）.
3. lithium battery diaphragm drying unit according to claim 1 or 2, it is characterised in that the box body（39）On bottom surface
Fix a discharge pipe（33）, discharge pipe（33）Air outlet to lithium battery diaphragm（20）Blowing, and air-out direction adds with arc
Hot plate（32）Tangential, the box body（39）The first wind turbine of interior setting（34）, the first wind turbine（34）Air outlet and discharge pipe
（33）Connection.
4. lithium battery diaphragm drying unit according to claim 3, it is characterised in that the discharge pipe（33）To be scalable
Hose.
5. lithium battery diaphragm drying unit according to claim 1 or 2, it is characterised in that the box body（39）Top surface
On fix an induced duct（35）, induced duct（35）Air inlet be directed toward lithium battery diaphragm（20）And with arc heating plate（32）'s
Tangential.
6. lithium battery diaphragm drying unit according to claim 5, it is characterised in that the induced duct（35）It is scalable
Hose.
7. lithium battery diaphragm drying unit according to claim 6, it is characterised in that the induced duct（35）With a mistake
Filter（36）Air inlet connection, an air-introduced machine（37）Air inlet and filter（36）Air outlet connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721527646.0U CN207353362U (en) | 2017-11-16 | 2017-11-16 | Lithium battery diaphragm drying unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721527646.0U CN207353362U (en) | 2017-11-16 | 2017-11-16 | Lithium battery diaphragm drying unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353362U true CN207353362U (en) | 2018-05-11 |
Family
ID=62350452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721527646.0U Expired - Fee Related CN207353362U (en) | 2017-11-16 | 2017-11-16 | Lithium battery diaphragm drying unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207353362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471623A (en) * | 2021-05-25 | 2021-10-01 | 张裕台 | Trimming treatment method for lithium battery diaphragm after heat setting |
-
2017
- 2017-11-16 CN CN201721527646.0U patent/CN207353362U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471623A (en) * | 2021-05-25 | 2021-10-01 | 张裕台 | Trimming treatment method for lithium battery diaphragm after heat setting |
| CN113471623B (en) * | 2021-05-25 | 2023-08-01 | 湖南诺邦新能源科技有限公司 | Trimming treatment method for heat-set lithium battery diaphragm |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20191116 |