CN104990395A - Pressure change type temperature rising method of temperature rising tank suitable for tunnel type drying line - Google Patents
Pressure change type temperature rising method of temperature rising tank suitable for tunnel type drying line Download PDFInfo
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- CN104990395A CN104990395A CN201510422425.6A CN201510422425A CN104990395A CN 104990395 A CN104990395 A CN 104990395A CN 201510422425 A CN201510422425 A CN 201510422425A CN 104990395 A CN104990395 A CN 104990395A
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- Prior art keywords
- pressure
- tunnel type
- air
- temperature rising
- warming box
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
Abstract
The invention discloses a pressure change type temperature rising method of a temperature rising tank suitable for a tunnel type drying line. The method comprises the following steps: (1) the tunnel type temperature rising tank having an inner circulating channel is provided with an air inlet valve communicated with a pressure air source and an air return valve communicated with an air return pipeline; and the air inlet valve and the air return valve are both communicated with the inner circulating channel; (2) the time of the air pressure in the temperature rising tank at least has one pressure change period time in one material transmission period of the tunnel type temperature rising tank; and (3) when the air pressure is changed, the high-pressure value of the air pressure is selected between 0.05 Mpa and 0.8 Mpa; the low-pressure value of the air pressure is selected between -0.1 Mpa and 0.1 Mpa; and every pressure change period time is selected between not shorter than 3 minutes and not longer than 60 minutes. Compared with a traditional normal-pressure temperature rising method, the temperature rising tank can shorten the temperature rising time by about 30%; and compared with a traditional high-pressure temperature rising method, the temperature rising tank can shorten the temperature rising time by about 15%.
Description
Technical field
The present invention relates to a kind of pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line.
Background technology
At present, many products are as lithium battery, lithium battery pole slice, and the process that other new energy materials all needs a degree of depth to dry, and exist to reach moisture content the least possible in the material.
The existing baking box for toasting new energy materials, modal is single case method, namely in a casing, realizes intensification, vacuum drying, and cooling three basic working procedure, and this method is not suitable for continuous prodution, is eliminated gradually.What replace the baking of single case method is continuous tunnel formula baking line, several basic steps of former single case method are divided into unit step one by one by this continuous tunnel formula baking line, after the step when above completes, then, enter subsequent processing and carry out other step, until complete whole bake process.This continuous tunnel formula baking line can dock completely with coating line or production line for manufacturing battery, realizes battery or the complete continuous and automatic of electrode, the dark welcome by client.
Connect each step speed of production in tunnel type baking line, capital has influence on the speed of production of whole production line, warming box in existing continuous tunnel formula baking line, its temperature-rise period is generally adopted in two ways, one is normal pressure temperature-raising method, namely the air pressure in warming box is atmospheric pressure, internal or external heating source is adopted to heat up to the material in case, this mode is the most general, but, this heating mode, the programming rate of its material is relatively slow, have impact on the speed of production of whole piece continuous tunnel formula baking line, people have to carry out a speed temperature-rise period with the warming box of multiple series connection, the investment of equipment can be increased like this, indirectly add the cost using producer, another kind of mode is high pressure warming method, exactly at warming box when starting working, just to pressurising in warm body, after reaching pre-level pressure, keep this pressure, until temperature of charge reaches necessary requirement, this temperature-raising method can improve suitable programming rate relative to normal pressure temperature-raising method.So have and do not have better way, can also improve the material programming rate in warming box, this is the long-term open question of technical staff of the sector.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line than high pressure warming method programming rate faster to society.
Technical scheme of the present invention is: provide a kind of pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line, comprise the steps,
(11), on the tunnel type warming box with inner cycle channel, an intake valve communicated with pressure gas source is set, and the return-air valve communicated with return line, described intake valve and described return-air valve all communicate with described inner cycle channel;
(12), within a material transferring cycle of tunnel type warming box, the air pressure in warming box at least will have one to press the variable period time;
(13), air pressure change time, the high-voltage value of its air pressure is selected between 0.05M pa to 0.8 M pa, and the low voltage value of air pressure is selected between-0.1 M pa to 0.1 M pa; And the time of each pressure variable period is being more than or equal to 3 minutes to being less than or equal to selection between 60 minutes.
As improvement of the present invention, in the pressure variable period time described in each, when pressure changes to peak value, one is had to hold time at this peak value.
As improvement of the present invention, described in hold time in 1 minute to 40 minutes select.
As improvement of the present invention, described intake valve and return-air valve can replace with a triple valve.
As improvement of the present invention, described tunnel type warming box comprises the outer case of both ends open and the internal box of both ends open, described internal box is located in described outer case, clearance space is provided with between described internal box and described outer case, heating source and circulation air machine is provided with in described clearance space, the front and back inwall of described internal box is provided with circulation port, and described circulation port communicates with described clearance space and forms circulation canal.
As improvement of the present invention, described pressure gas source is dry nitrogen.
As improvement of the present invention, described return line can communicate with vacuum source or communicate with air reservoir.
The present invention becomes owing to have employed pressure the method heated up in material temperature-rise period, namely when with pressure, pressure in material temperature raising period chien shih warming box changes, be conducive to heat energy to enter and be warmed in material, or take heat out of from being warmed in material, thus programming rate can be accelerated widely, shorten the heating-up time, improve the production efficiency of the production line of fast bar tunnel type baking line.Use the warming box of the inventive method compared with traditional normal pressure temperature-raising method, the heating-up time of about 30% can be shortened; Compared with traditional high pressure warming method, the heating-up time of about 15% can be shortened.
Accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of a kind of embodiment of the present invention.
Fig. 2 is the first intensification pressure curve schematic diagram embodiment illustrated in fig. 1.
Fig. 3 is the second intensification pressure curve schematic diagram embodiment illustrated in fig. 1.
Fig. 4 is the third intensification pressure curve schematic diagram embodiment illustrated in fig. 1.
Fig. 5 is the 4th kind of intensification pressure curve schematic diagram embodiment illustrated in fig. 1.
Fig. 6 is the first radial section structural representation of warming box in the present invention.
Fig. 7 is the second radial section structural representation of warming box in the present invention.
Detailed description of the invention
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as " " center ", " on ", D score, "front", "rear", "left", "right" in term be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " connection ", " being connected " should be interpreted broadly, and such as, can be fixedly connected with, and also can be that dismounting connects, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also can be indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term can be understood at concrete meaning of the present invention.In addition, in describing the invention, except as otherwise noted, the implication of " multiple ", " some " is two or more.
Refer to Fig. 1, what Fig. 1 disclosed is a kind of pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line, comprises the steps,
(11), on the tunnel type warming box with inner cycle channel, an intake valve communicated with pressure gas source is set, and the return-air valve communicated with return line, described intake valve and described return-air valve all communicate with described inner cycle channel; Obviously, described intake valve and return-air valve can replace with a triple valve, when adopting a three-way valve, when needs enter drying pressure gas, can the spool of swivel tee valve, pressure gas source is connected with the enterprising tracheae of tunnel type warming box, enters dry gas, when needing the gas in tunnel type warming box to discharge, the dry gas that makes of swivel tee valve is discharged again, the dry gas of discharging directly can enter space, also can be expelled back into holding vessel, carry out secondary utilization.
(12), within a material transferring cycle of tunnel type warming box, the air pressure in warming box at least will have one to press the variable period time; The material transferring cycle in the present invention refers to that material plays from entering into tunnel type warming box the holdup time in tunnel type warming box left needed for tunnel type warming box; After the described pressure variable period time refers to and changes into another state from the first state of pressure, the time used when returning the first state.By on the warming box of this method in baking at continuous case, battery or electrode are heated up, fast hot-air can be pressed in battery (hole by battery case) or electrode (micropore by electrode material) due to during pressurization, and when reducing pressure, fast cold air can be taken away again, form convection current inside and outside battery or electrode, thus can accelerate by the programming rate of material of heating.Avoid simple high pressure warming and inside and outside gaseous exchange can not be produced, affecting the problem of programming rate.
(13), air pressure change time, the high-voltage value of its air pressure can be selected between 0.05M pa to 0.8 M pa, and the low voltage value of air pressure can be selected between-0.1 M pa to 0.1 M pa; And the time of each pressure variable period can be more than or equal to 3 minutes to being less than or equal to selection between 60 minutes; Above-mentioned high-voltage value, low voltage value, and the pressure variable period time can to heat up material concrete technology requirement and setting according to difference.
Preferably, in the pressure variable period time described in each, when pressure changes to peak value, there is one to hold time at this peak value, can more be conducive to by the heat exchange of material of heating.
Preferably, hold time described in 1 minute to 40 minutes select.
Preferably, described pressure gas source is dry nitrogen, inert gas or eliminate the air of oxygen, wherein, and the most handy argon gas in inert gas.Described return line can communicate with vacuum source or communicate with air reservoir.
Refer to Fig. 2, Fig. 2 is the first intensification pressure curve schematic diagram embodiment illustrated in fig. 1.The namely graph of a relation of heating-up time T and intensification pressure P.As can be seen from Figure 2, after material enters warming box, at ambient pressure after intensification very first time T1, start pressurization, make the pressure in warming box be warmed up to this high-voltage value of 0.8Mpa(gradually from normal pressure 0 to select between 0.05M pa to 0.8 M pa), then explosive decompression is to normal pressure 0, complete pressure variable period time (i.e. the conjunction of T2 and T3), in this pressure one rise and one drop, in the process of boosting, heat energy press-in can be warmed in material (as lithium battery, lithium electrode etc.), in the process of step-down, fast cold energy can be taken out of and be warmed material, reach the object making to be warmed material and be rapidly heated, in Fig. 2, containing four pressure variable period times in a material transferring cycle T 0, certainly, in the present invention, the more than one pressure variable period time can be comprised in a material transferring cycle T 0, this requires according to concrete technology and determines.
Ask for an interview Fig. 3, Fig. 3 is the second intensification pressure curve schematic diagram embodiment illustrated in fig. 1.As can be seen from Figure 3, after material enters warming box, at ambient pressure after intensification very first time T1, start pressurization, make the pressure in warming box be warmed up to this high-voltage value of 0.8Mpa(gradually from normal pressure 0 to select between 0.05M pa to 0.8 M pa), then the T4 that holds time is kept, decompression is to normal pressure 0 again, complete a pressure variable period time (i.e. T2, the conjunction of T4 and T3), in this pressure one rise and one drop, in the process of boosting, heat energy press-in can be warmed in material (as lithium battery, lithium electrode etc.), sufficient heat exchange is carried out in the process of pressurize, in the process of step-down, fast cold energy can be taken out of and be warmed material, reach the object making to be warmed material and be rapidly heated, in Fig. 3, after pressure reduction, keep a time delay T5 again, enter the next pressure variable period time.In the present embodiment, containing two pressure variable period times in a material transferring cycle T 0, certainly, in the present invention, can comprise the more than one pressure variable period time in a material transferring cycle T 0, this requires according to concrete technology and determines.
Refer to Fig. 4, Fig. 4 is the third intensification pressure curve schematic diagram embodiment illustrated in fig. 1.Shown in Fig. 4, curve shown in curve with Fig. 3 is substantially identical, and difference is after boosting case has certain malleation (being 0.1Mpa in as figure) in advance, then carries out pressure change, makes to which form two pressure cycle transformation periods.
Refer to Fig. 5, Fig. 5 is the 4th kind of intensification pressure curve schematic diagram embodiment illustrated in fig. 1.Shown in Fig. 5, curve shown in curve with Fig. 3 is substantially identical, and difference is after boosting case has certain negative pressure (being-0.1Mpa in as figure) in advance, then carries out pressure change, makes to which form two pressure cycle transformation periods.
In order to withstand voltage, the warming box in the present invention can be designed to withstand voltage warming box, and as shown in Figure 6, Fig. 6 is the first radial section structural representation of warming box in the present invention.Tunnel type warming box described in Fig. 6 comprises the outer case 1 of both ends open and the internal box 2 of both ends open, described internal box 2 is located in described outer case 1, clearance space 3 is provided with between described internal box 2 and described outer case 1, heating source 4 and circulation air machine 5 is provided with in described clearance space 3, the front and back inwall 6,7 of described internal box is provided with circulation port (right, left from Fig. 6, be front and back in actual product), described circulation port communicates with described clearance space 3 and forms circulation canal.Hot-air circulates in the direction of arrows all the time between circulation canal and clearance space 3.
Refer to Fig. 7, Fig. 7 is the second radial section structural representation of warming box in the present invention.Implement shown in Fig. 7 and Fig. 6 to compare, its general structure is identical, and difference is the radial section of described outer case 1 is square, and the outer wall of outer case adds reinforcement 8.
Embodiment shown in above-mentioned Fig. 6 and Fig. 7, outside casing 1, moisture drying device (picture) in air channel can also be set in or beyond outer case 1, in described air channel, moisture drying device is connected with described circulation canal, Inner eycle wind from internal box 2 out after, enter moisture drying device in air channel dried after, then enter the logical recycling of described circulation.In described air channel, moisture drying device comprises shell, is provided with drying material in the enclosure, as dry silica gel or other absorbent material etc.
Claims (7)
1. be suitable for a pressure variant temperature-rising method for the warming box of tunnel type baking line, it is characterized in that: comprise the steps,
(11), on the tunnel type warming box with inner cycle channel, an intake valve communicated with pressure gas source is set, and the return-air valve communicated with return line, described intake valve and described return-air valve all communicate with described inner cycle channel;
(12), within a material transferring cycle of tunnel type warming box, the air pressure in warming box at least will have one to press the variable period time;
(13), air pressure change time, the high-voltage value of its air pressure is selected between 0.05M pa to 0.8 M pa, and the low voltage value of air pressure is selected between-0.1 M pa to 0.1 M pa; And the time of each pressure variable period is being more than or equal to 3 minutes to being less than or equal to selection between 60 minutes.
2. the pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line according to claim 1, is characterized in that, in the pressure variable period time described in each, when pressure changes to peak value, having one to hold time at this peak value.
3. the pressure variant temperature-rising method of warming box being suitable for tunnel type baking line according to claim 2, is characterized in that, described in hold time and to select in 1 minute to 40 minutes.
4. the pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line according to claim 1,2 or 3, is characterized in that, described intake valve and return-air valve can replace with a triple valve.
5. the pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line according to claim 1,2 or 3, it is characterized in that, described tunnel type warming box comprises the outer case of both ends open and the internal box of both ends open, described internal box is located in described outer case, clearance space is provided with between described internal box and described outer case, heating source and circulation air machine is provided with in described clearance space, the front and back inwall of described internal box is provided with circulation port, and described circulation port communicates with described clearance space and forms circulation canal.
6. the pressure variant temperature-rising method of warming box being suitable for tunnel type baking line according to claim 1,2 or 3, is characterized in that, described pressure gas source is dry nitrogen, inert gas or eliminate the air of oxygen.
7. the pressure variant temperature-rising method being suitable for the warming box of tunnel type baking line according to claim 1,2 or 3, it is characterized in that, described return line can communicate with vacuum source or communicate with air reservoir.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422425.6A CN104990395A (en) | 2015-07-20 | 2015-07-20 | Pressure change type temperature rising method of temperature rising tank suitable for tunnel type drying line |
| CN201510597569.5A CN105135863A (en) | 2015-07-20 | 2015-09-20 | Pressure change type warming method for warming box suitable for tunnel type baking line and warming box thereof |
| CN201610017350.8A CN105546969B (en) | 2015-07-20 | 2016-01-12 | It is suitable for the buckling formula temperature-rising method and its warming box of the warming box of tunnel type baking line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422425.6A CN104990395A (en) | 2015-07-20 | 2015-07-20 | Pressure change type temperature rising method of temperature rising tank suitable for tunnel type drying line |
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| Publication Number | Publication Date |
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| CN104990395A true CN104990395A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510422425.6A Withdrawn CN104990395A (en) | 2015-07-20 | 2015-07-20 | Pressure change type temperature rising method of temperature rising tank suitable for tunnel type drying line |
| CN201510597569.5A Pending CN105135863A (en) | 2015-07-20 | 2015-09-20 | Pressure change type warming method for warming box suitable for tunnel type baking line and warming box thereof |
| CN201610017350.8A Active CN105546969B (en) | 2015-07-20 | 2016-01-12 | It is suitable for the buckling formula temperature-rising method and its warming box of the warming box of tunnel type baking line |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510597569.5A Pending CN105135863A (en) | 2015-07-20 | 2015-09-20 | Pressure change type warming method for warming box suitable for tunnel type baking line and warming box thereof |
| CN201610017350.8A Active CN105546969B (en) | 2015-07-20 | 2016-01-12 | It is suitable for the buckling formula temperature-rising method and its warming box of the warming box of tunnel type baking line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899194A (en) * | 2020-07-06 | 2022-01-07 | Sk新技术株式会社 | Secondary battery electrode plate drying method and drying system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261646A (en) * | 1995-03-27 | 1996-10-11 | Toshiba Eng Co Ltd | Drying method and drying apparatus |
| JP5141869B2 (en) * | 2007-03-29 | 2013-02-13 | Ｔｄｋ株式会社 | Method for drying powder and method for producing rare earth sintered magnet |
| KR100870838B1 (en) * | 2008-03-04 | 2008-11-28 | 한국철강 주식회사 | Removal method of moisture from substrate coated with transparent electrode |
| JP5742114B2 (en) * | 2010-05-17 | 2015-07-01 | 日産自動車株式会社 | Drying method and drying apparatus |
| CN101936645B (en) * | 2010-09-30 | 2013-01-23 | 昆山康和电子科技有限公司 | Vacuum drying box |
| CN102636007A (en) * | 2012-05-12 | 2012-08-15 | 深圳市信宇人科技有限公司 | Safe and energy-saving vacuum oven with temperature rising rapidly |
| CN103322776B (en) * | 2013-06-05 | 2015-08-19 | 奇瑞新能源汽车技术有限公司 | A kind of drying means of electrodes of lithium-ion batteries |
| CN103441003B (en) * | 2013-08-21 | 2016-04-13 | 宁波海融电器有限公司 | A kind of capacitor heating means |
| CN205048942U (en) * | 2015-09-20 | 2016-02-24 | 深圳市信宇人科技有限公司 | Press variant intensification case |
| CN205332690U (en) * | 2016-01-12 | 2016-06-22 | 深圳市信宇人科技有限公司 | Press variant intensification case |
-
2015
- 2015-07-20 CN CN201510422425.6A patent/CN104990395A/en not_active Withdrawn
- 2015-09-20 CN CN201510597569.5A patent/CN105135863A/en active Pending
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2016
- 2016-01-12 CN CN201610017350.8A patent/CN105546969B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899194A (en) * | 2020-07-06 | 2022-01-07 | Sk新技术株式会社 | Secondary battery electrode plate drying method and drying system |
| CN113899194B (en) * | 2020-07-06 | 2023-10-03 | Sk新能源株式会社 | Drying method and drying system for electrode plate of secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105546969A (en) | 2016-05-04 |
| CN105135863A (en) | 2015-12-09 |
| CN105546969B (en) | 2018-08-07 |
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Application publication date: 20151021 |