CN204067485U - The high efficiency degree of depth of lithium ion battery or battery pole piece dewaters baking line - Google Patents
The high efficiency degree of depth of lithium ion battery or battery pole piece dewaters baking line Download PDFInfo
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- CN204067485U CN204067485U CN201420421293.6U CN201420421293U CN204067485U CN 204067485 U CN204067485 U CN 204067485U CN 201420421293 U CN201420421293 U CN 201420421293U CN 204067485 U CN204067485 U CN 204067485U
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- ion battery
- battery pole
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 130
- 238000001816 cooling Methods 0.000 claims abstract description 72
- 230000007704 transition Effects 0.000 claims abstract description 70
- 238000010792 warming Methods 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims description 40
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 20
- 230000008569 process Effects 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The high efficiency degree of depth of a kind of lithium ion battery or battery pole piece dewaters baking line, at least comprise the high pressure warming casing of continuous operation, vaccum dewatering casing and cooling box, described high pressure warming casing, vaccum dewatering casing and cooling box are interconnected to constitute tunnel structure, transition casing is provided with between two the adjacent working box needed, described transition casing is used for when the lithium ion battery needing reception to come from a upper casing or battery pole piece, first by the pressure adjusting in described transition casing to substantially equal with the pressure in a described upper casing; After lithium ion battery or battery pole piece are received and come, then by the pressure adjusting in transition casing to substantially equal with the pressure in next casing, and lithium ion battery or battery pole piece are sent in next casing described.The utility model have can with battery pole piece production process in or battery production process in front and back operation realize the advantage of working continuously.
Description
technical field
The high efficiency degree of depth that the utility model relates to a kind of lithium ion battery or battery pole piece dewaters baking line.
background technology
The manufacture of present electrodes of lithium-ion batteries or lithium ion battery, electrodes of lithium-ion batteries or lithium ion battery is all needed to carry out degree of depth oven dry, what existing degree of depth drying plant adopted is all single casing baking process, modal baking process is in a vacuum bakeout case, first the electrode of lithium cell be baked is loaded in vacuum bakeout case, heat in casing again, after the temperature inside the box reaches requirement, when being incubated, removing moisture will be vacuumized in casing, after the moisture of battery pole piece reaches requirement, again nature cooling carried out to the electrode of lithium cell be baked in casing or battery or force cooling, the temperature of electrode of lithium cell or the battery core be baked is made to drop to (being generally less than 35 degrees Celsius) to a certain degree, the electrode of lithium cell be baked or battery are taken out sealing preserve.Such as, the furnace drying method of the positive electrode material of the lithium Fe battery disclosed in Chinese patent literature CN102110803A, is suitable for the furnace drying method of single case operation exactly.The existing way completing whole processing step in a vacuum bakeout case, even generally adopt pressure cooling from being fed to discharging, also 24 hours are needed just can to complete a dry roasting cycle, therefore, this baking process and baking box just can not form streamlined operation truly with front and back operation, if naturally cool the time then needing more to grow, have impact on the utilance of baking box; Energy consumption is large, and the problem such as staff labor intensity is large.In addition, the water content of the battery pole piece toasting out in this way only reaches 400ppm-600ppm, cannot reach lower requirement, affects the further raising of the capacitance of battery.
utility model content
For the deficiencies in the prior art, the purpose of this utility model be can with battery pole piece production process in or battery production process in the front and back operation high efficiency degree of depth that realizes lithium ion battery or the battery pole piece of working continuously to dewater baking line.
Another object of the present utility model further can dewater and/or deoxygenation to lithium ion battery or battery pole piece.
The technical solution of the utility model is: provide the high efficiency degree of depth of a kind of lithium ion battery or battery pole piece to dewater baking line, at least comprise the high pressure warming casing of continuous operation, vaccum dewatering casing and cooling box, described high pressure warming casing, vaccum dewatering casing and cooling box are interconnected to constitute tunnel structure, transition casing is provided with between at least two adjacent working box, described transition casing is used for when needs receive the lithium ion battery or battery pole piece of coming from a upper casing, first by the pressure adjusting in described transition casing to substantially equal with the pressure in a described upper casing, after lithium ion battery or battery pole piece are received and come, then by the pressure adjusting in transition casing to substantially equal with the pressure in next casing, and lithium ion battery or battery pole piece are sent in next casing described.
As to improvement of the present utility model, intensification transition casing was provided with before described high pressure warming casing, when described intensification transition casing is for receiving the lithium ion battery or battery pole piece of coming from a upper operation at ambient pressure, pressure in described intensification transition casing is substantially equal with atmospheric pressure, after lithium ion battery or battery pole piece are received and come, again by the pressure adjusting in intensification transition casing to substantially equal with the pressure in described high pressure warming casing, and lithium ion battery or battery pole piece to be sent in described high pressure warming casing.
As to improvement of the present utility model, after described cooling box, be also provided with concentration difference leave standstill casing, open cooling box and concentration difference and leave standstill door between casing, lithium ion battery in cooling box or battery pole piece are sent into concentration difference to be left standstill in casing, leave standstill in casing in described concentration difference, remove lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, make the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture.
As to improvement of the present utility model, described concentration difference water-eliminating method leaves standstill in casing in concentration difference at least to arrange drier and a circulating fan, in drier, be provided with drier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly circulates through drier.
As to improvement of the present utility model, between described vaccum dewatering casing and cooling box, be also provided with concentration difference leave standstill casing, leave standstill between casing at described vaccum dewatering casing and concentration difference and be provided with vacuum transition casing, when described vacuum transition casing is used for receiving lithium ion battery or battery pole piece from vaccum dewatering casing, by the pressure adjusting in described vacuum transition casing to substantially equal with the pressure of vaccum dewatering casing; After lithium ion battery or battery pole piece are received and come, then by the pressure adjusting in vacuum transition casing to substantially equal with the pressure of cooling box, lithium ion battery or battery pole piece are sent to cooling box.
The utility model adopts HTHP to heat up, and in 1 hour, high pressure warming casing can be raised to the first predetermined temperature, this time beat, the time beat just in time enclosing electrode with the coating one of coating machine is consistent; Employing high-temperature vacuum dewaters, and N can be adopted doubly to the HTHP heating-up time, be so not only in step with the HTHP heating-up time, and can ensure the time that high-temperature vacuum dewaters, make lithium ion battery or battery pole piece reach predetermined moisture; Adopt cooling fast, N can be adopted doubly to the HTHP heating-up time, be so not only in step with the high-temperature vacuum time of dewatering, and the time of cooling fast can be ensured, make lithium ion battery or battery pole piece reach predetermined temperature; Adopting concentration difference to leave standstill can the more moisture of the low lithium ion battery of a step-down or battery pole piece and oxygen content, in order to the capacitance improving battery.The utility model works as N=10, during M=3, lithium ion battery or battery pole piece only need 14 hours just can complete from being warmed up to cooling, compared with traditional 24 hours, can 10 hours be saved, such baking line just can be suitable for coating speed being that an every 45-60 minute volume supports the use completely, realizes coating baking pipelining truly.In addition, dewater in part or the whole high efficiency degree of depth between the operated adjacent casing toasting line, transition casing is set, when needs receive lithium ion battery or battery pole piece from a upper working box, air pressure in transition casing can be adjusted to substantially equal with the air pressure in a upper working box, lithium ion battery or battery pole piece is received in a upper casing, after receiving, close the door between transition casing and a upper working box, then, again by the pressure adjusting in transition casing to substantially equal with the pressure in subsequent work casing, open the door between transition casing and next casing, lithium ion battery or battery pole piece are transported to subsequent work casing, close the door between transition casing and next casing, wait for action next time, when the benefit of transition casing is set, the energy can be saved, and a upper working box and subsequent work casing are when normally working, its working box environment need not change, and just smoothly lithium ion battery or battery pole piece can be transferred to subsequent work casing from a upper working box, transition casing is very important, if do not have transition casing, whole production line cannot normally work, and energy consumption is very large.
Accompanying drawing explanation
Fig. 1 is the plane block diagram of the first embodiment of roasting plant of the present utility model.
Fig. 2 is the plane block diagram of the second embodiment of roasting plant of the present utility model.
Fig. 3 is the generalized section of high pressure warming casing in the utility model and vaccum dewatering casing.
Fig. 4 is the side schematic view that concentration difference in the utility model leaves standstill casing.
embodiment
Refer to Fig. 1, Fig. 1 is the plane block diagram of the first embodiment of roasting plant of the present utility model.The utility model also provides the high efficiency degree of depth of a kind of lithium ion battery or battery pole piece to dewater baking line, comprises the feeding platform 21, high pressure warming casing 31, vaccum dewatering casing 41, cooling box 51, the concentration difference that arrange continuously and leaves standstill casing 61 and discharge pedestal 71, described high pressure warming casing 31, vaccum dewatering casing 41, cooling box 51 and concentration difference leave standstill casing 61 and connect and compose tunnel structure successively, each described working box is operationally independent sealed, when processed lithium ion battery or battery pole piece enter subsequent work casing from a upper work box, when keeping the pressure of adjacent two casings basically identical, door (34 between adjacent two working box, 44, 54) be opened, described lithium ion battery or battery pole piece (33, 43, 53) at driving mechanism (32, 42, 52) be admitted to subsequent work casing or move down a step in same casing, when each described working box processes lithium ion battery or battery pole piece (33,43,53) by technique, the door (34,44,54) between adjacent two working box is closed, concentration difference leaves standstill casing 61 for removing the moisture of lithium ion battery or battery pole piece 63 further, and finally, lithium ion battery or battery pole piece 63 can be moved into discharge pedestal 71 and enter next process.
High pressure warming casing 31 in above-described embodiment, vaccum dewatering casing 41, cooling box 51 and concentration difference leave standstill casing 61 and can work in the steps below;
(1), high pressure warming step, adopt protective gas that the pressure in high pressure warming casing 31 is raised to the first predetermined pressure, within first scheduled time (as 20-60 minute), the temperature in high pressure warming casing 31 is raised to the first predetermined temperature, and keep second scheduled time (as 5-10 minute), in the present embodiment, described first predetermined temperature is 80 degrees Celsius to 115 degrees Celsius, or is between 121 degrees Celsius to 200 degrees Celsius, described first predetermined pressure is between 10Kpa to 500Kpa, so can be suitable for originally coordinating with lithium ion battery or battery pole piece reel line, the time that existing battery pole piece coating line is coated with a volume is approximately 46 minutes, be coated with rear directly enter charging cloth rapid 11, ensure product be continuous-flow type operation, when the temperature in high pressure warming casing 31 is raised to the first predetermined temperature, pressure is raised to the first predetermined pressure, and after keeping for second scheduled time, first the case internal pressure of high pressure warming casing 31 and vaccum dewatering casing 41 is adjusted to substantially equal, pressure adjusting has several method, one is after high pressure warming casing 31 technique satisfies condition, by the pressure adjusting in high pressure warming casing 31 to substantially equal with the pressure in vaccum dewatering casing 41, then, open the door between high pressure warming casing 31 and vaccum dewatering casing 41, lithium ion battery or battery pole piece are moved in the dry casing 41 of vacuum, close the door 34 between high pressure warming casing 31 and vaccum dewatering casing 41, new pending lithium ion battery or battery pole piece 33 is loaded again to high pressure warming casing 31, at this moment, if also have lithium ion battery or battery pole piece 43 to exist in vaccum dewatering casing 41, described lithium ion battery or battery pole 43 also move and move a step (longer at vaccum dewatering casing 41, and when being provided with multistep) backward or move in another vaccum dewatering casing (when vaccum dewatering casing is single-unit),
(2), keep temperature in vaccum dewatering casing 41 at the first predetermined temperature, vacuumize or keep the Absolute truth reciprocal of duty cycle of in vaccum dewatering casing 41 to be the first vacuum degree (as 200pa to 10pa); Here vacuumizing of indication refers to that vaccum dewatering casing is when normal pressure, must vacuumize; Here the maintenance vacuum of indication refers to vaccum dewatering casing inherently under the state of predetermined vacuum level, and this just needs to keep; At N doubly within the total time that high pressure warming casing 31 is used, wherein, N be more than or equal to 2 integer, be preferably the integer of N=2 to 10, commonly use as N=6, the moisture content of pending lithium ion battery or battery pole piece is dropped to the first predetermined moisture; Such as, if the processing time in vaccum dewatering casing 41 is 6 times of the processing time in high pressure warming casing 31, i.e. N=6, then the length of described vaccum dewatering casing just should be 6 times of high pressure warming casing, ensure that lithium ion battery or battery pole piece can keep 6 times of times in high pressure warming casing 31, moisture content can be reached and drop to the first predetermined moisture; Other multiple is so analogized.
(3) door 44 between vaccum dewatering casing 41 and cooling box 51, is opened, it is substantially equal for needing vaccum dewatering casing 41 and the pressure adjusting in cooling box 51 before this, reasonable way is vacuumized by cooling box 51, makes the pressure in cooling box 51 substantially equal with the pressure in vaccum dewatering casing 41; Lithium ion battery in vaccum dewatering casing 41 or battery pole piece 43 are sent in cooling box 51; And coolant (as liquid nitrogen etc.) is inputted in cooling box 51, at M doubly within the total time that high pressure warming casing 31 is used, wherein, M be to be greater than etc. 1 integer, preferably M=1,2 or 3, drops to the second predetermined temperature by the temperature of pending lithium ion battery or battery pole piece; About length and high pressure warming casing 31 relation of cooling box 51, can see in (2) to the explanation of the length of vaccum dewatering casing 41 and the length of high pressure warming casing 31, here repeat no more, as long as can ensure that lithium ion battery or battery pole piece can be just passable in baking line proper flow.
(4), the pressure in cooling box 51 is raised to normal pressure, open cooling box 31 and concentration difference and leave standstill door 54 between casing 61, lithium ion battery in cooling box 51 or battery pole piece 53 are sent into concentration difference to be left standstill in casing 61, leave standstill in casing 61 in described concentration difference, remove lithium ion battery or battery pole piece 63 moisture further by concentration difference water-eliminating method, make the moisture of lithium ion battery or battery pole piece 63 drop to the second predetermined moisture.In the present embodiment, described concentration difference water-eliminating method at least arranges drier 210 and a circulating fan 220 on the casing 200 that concentration difference leaves standstill casing 61, in drier 210, be provided with drier 230, the gas that described circulating fan 220 makes concentration difference leave standstill in casing 61 constantly circulates through drier 230.Or/and described concentration difference water-eliminating method is also included in concentration difference leave standstill the degasifier arranged in casing, in degasifier, be provided with deoxidier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly carries out circulate (picture) through deoxidier.Drier 230 in the present embodiment can adopt quick lime or silica gel.
Above-mentioned quick cooling and concentration difference stating step first cool to leave standstill afterwards, and described quick cooling and concentration difference stating step also can be first leave standstill rear cooling, and like this in the standing link process condition of high temperature, its water removal effect is better, and it comprises:
Open vaccum dewatering casing and concentration difference and leave standstill door between casing, the lithium ion battery in vaccum dewatering casing or battery pole piece are sent into concentration difference and leaves standstill in casing; At M doubly within the total time that high pressure warming casing is used, wherein, M=1,2 or 3, removes lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, makes the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture;
Open concentration difference and leave standstill door between casing and cooling box, concentration difference is left standstill lithium ion battery in casing or battery pole piece is sent in cooling box, and coolant is inputted in the interlayer of cooling box, at M doubly within the total time that high pressure warming casing is used, wherein, M=1,2 or 3, drops to the second predetermined temperature by the temperature of lithium ion battery or battery pole piece.
In the utility model, described quick cooling and concentration difference stating step can also carry out as follows, and namely cooling limit in limit leaves standstill and dewaters, and comprises the steps:
Open vaccum dewatering casing and concentration difference and leave standstill door between casing, the lithium ion battery in vaccum dewatering casing or battery pole piece are sent into concentration difference and leaves standstill in casing; At M doubly within the total time that high pressure warming casing is used, wherein, M=1,2 or 3, removes lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, makes the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture; And in the interlayer of cooling box, input coolant simultaneously, the temperature of lithium ion battery or battery pole piece is dropped to the second predetermined temperature.
In the utility model, described concentration difference water-eliminating method can be leave standstill on casing in concentration difference at least to arrange drier and a circulating fan, in drier, be provided with drier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly circulates through drier; Also can be leave standstill casing circulation to described concentration difference to input the moisture content that produced by the gas dry station dry gas lower than 5ppm, leave standstill in casing in concentration difference and circulate, utilize moisture content to take away moisture content in lithium ion battery or battery pole piece further lower than the dry gas of 5ppm.
Preferably, described second predetermined temperature is between 25 degrees Celsius to 60 degrees Celsius.
Preferably, described second predetermined moisture is between 10ppm to 200ppm.
Preferably, described protective gas removes one or more the mist in air, inert gas or the nitrogen after oxygen gas component.
Refer to Fig. 2, Fig. 2 is the plane block diagram of the second embodiment of roasting plant of the present utility model.
This baking line comprises the loading platform 21 of continuous operation, intensification transition casing 311, high pressure warming casing 31, vacuum transition casing 411, vaccum dewatering casing 41, cooled transition casing 511, cooling box 51, concentration difference leaves standstill casing 51 and discharge pedestal 71, intensification transition casing 311, high pressure warming casing 31, vacuum transition casing 411, vaccum dewatering casing 41, cooled transition casing 511, cooling box 51, concentration difference leaves standstill casing 51, corresponding working box and the front and back of transition casing are equipped with can the door of switch, and connect and compose tunnel structure successively, each described working box is operationally independent sealed, when processed lithium ion battery or battery pole piece enter subsequent work casing from a upper work box, if there is transition casing centre, then by the pressure adjusting in transition casing to substantially equal with the pressure of a upper casing, then, the lithium ion battery of a upper casing or battery pole piece are sent in transition casing, again by the pressure adjusting in transition casing to substantially equal with the pressure in next casing, then, the lithium ion battery in excessive casing or battery pole piece are sent in next casing, so transmit lithium ion battery or battery pole piece successively, concentration difference leaves standstill casing 61 for removing the moisture of lithium ion battery or battery pole piece 63 further, and finally, lithium ion battery or battery pole piece 63 can be moved into discharge pedestal 71 and enter next process.
The present embodiment works in the following manner:
(11), by lithium ion battery or battery pole piece be placed on workbench 21, prepare to enter the excessive step that heats up;
(111), heat up excessive step, by the excessive casing of intensification corresponding to excessive step that heats up, lithium ion battery or battery pole piece will be entered at ambient pressure, and the Qianmen of the excessive casing that heats up is closed, by input protection gas, the pressure heated up in excessive casing is risen to substantially equal with the pressure in high pressure warming casing, prepare lithium ion battery or battery pole piece to be transplanted in high pressure warming casing;
(1), high pressure warming step, when adopting protective gas the pressure in high pressure warming casing to be raised to the first predetermined pressure or keep the first predetermined pressure, open the door heated up between excessive casing and high pressure warming casing, described lithium ion battery or battery pole piece are transplanted in high pressure warming casing, within first scheduled time (as 20-60 minute), the temperature in high pressure warming casing is raised to the first predetermined temperature, and keep second scheduled time (as 5-10 minute), in the present embodiment, described first predetermined temperature is 80 degrees Celsius to 115 degrees Celsius, or be between 121 degrees Celsius to 200 degrees Celsius, described first predetermined pressure is between 10Kpa to 500Kpa, so can be suitable for originally coordinating with lithium ion battery or battery pole piece reel line, the time that existing battery pole piece coating line is coated with a volume is approximately 46 minutes, be coated with rear directly enter charging cloth rapid 11, ensure product be continuous-flow type operation, when the temperature in high pressure warming casing is raised to the first predetermined temperature, and after keeping for second scheduled time, enter next step,
(21) vacuum transition step, by the vacuum transition casing corresponding to vacuum transition step, boost to substantially equal with the pressure in described high pressure warming casing, open the door in high pressure warming casing and between vacuum transition casing, lithium ion battery or battery pole piece are moved in vacuum transition casing from high pressure warming casing, close the door between the excessive casing of vacuum and high pressure warming casing, take out true in substantially equal with the pressure in vaccum dewatering casing again, prepare lithium ion battery or battery pole piece to be transplanted in vaccum dewatering casing;
(2), keep temperature in vaccum dewatering casing at the first predetermined temperature, vacuumize or keep the Absolute truth reciprocal of duty cycle in vaccum dewatering casing to be the first vacuum degree (as 200pa to 10pa); Here vacuumizing of indication refers to that vaccum dewatering casing is when normal pressure, must vacuumize; Here the maintenance vacuum of indication refers to vaccum dewatering casing inherently under the state of predetermined vacuum level, and this just needs to keep; Open the door between vaccum dewatering casing and vacuum transition casing, lithium ion battery or battery pole piece are transplanted on vaccum dewatering casing; At N doubly within the total time that high pressure warming casing is used, wherein, N be more than or equal to 2 integer, be preferably the integer of N=2 to 10, commonly use as N=6, the moisture content of pending lithium ion battery or battery pole piece is dropped to the first predetermined moisture; Such as, if the processing time in vaccum dewatering casing is 6 times of the processing time in high pressure warming casing, i.e. N=6, then the length of described vaccum dewatering casing just should be 6 times of high pressure warming casing, ensure that lithium ion battery or battery pole piece can keep 6 times of times in high pressure warming casing, moisture content can be reached and drop to the first predetermined moisture; Other multiple is so analogized.
(31), cooled transition step, by the cooled transition casing corresponding to cooled transition step, be evacuated to substantially equal with the pressure in described vaccum dewatering casing, open the door in vaccum dewatering casing and between cooled transition casing, lithium ion battery or battery pole piece are moved in cooled transition casing from vaccum dewatering casing, close the door between undercooling casing and vaccum dewatering casing, with protective gas, the pressure in cooled transition casing is raised to normal pressure, prepares lithium ion battery or battery pole piece to be transplanted in cooling box;
(3), open door between vacuum transition casing and cooling box, the lithium ion battery in cooled transition casing or battery pole piece are sent in cooling box; And in cooling box, input coolant, at M doubly within the total time that high pressure warming casing is used, wherein, M be to be greater than etc. 1 integer, preferably M=1,2 or 3, drops to the second predetermined temperature by the temperature of pending lithium ion battery or battery pole piece; About length and the high pressure warming casing relation of cooling box, can see in (2) to the explanation of the length of vaccum dewatering casing and the length of high pressure warming casing, here repeat no more, as long as can ensure that lithium ion battery or battery pole piece can be just passable in baking line proper flow.
(4), open cooling box and concentration difference and leave standstill door between casing, lithium ion battery in cooling box or battery pole piece are sent into concentration difference to be left standstill in casing, leave standstill in casing in described concentration difference, remove lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, make the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture.In the present embodiment, described concentration difference water-eliminating method leaves standstill on casing in concentration difference at least to arrange drier and a circulating fan, and in drier, be provided with drier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly circulates through drier.Or/and described concentration difference water-eliminating method is also included in concentration difference leave standstill the degasifier arranged in casing, in degasifier, be provided with deoxidier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly circulates through deoxidier.
(12), discharging, the lithium ion battery after concentration difference process or battery pole piece, sealing state under be admitted to next procedure, for coating line, next procedure can be slicing process, and for battery, next procedure can fluid injection operation.
Above-mentioned quick cooling and concentration difference stating step first cool to leave standstill afterwards, and described quick cooling and concentration difference stating step also can be first leave standstill rear cooling, and like this in the standing link process condition of high temperature, its water removal effect is better, and it comprises:
Open vaccum dewatering casing and concentration difference and leave standstill door between casing (need concentration difference to leave standstill pressure adjusting to substantially equal with the pressure in vaccum dewatering casing) in casing, the lithium ion battery in vaccum dewatering casing or battery pole piece are sent into concentration difference and leaves standstill in casing; At M doubly within the total time that high pressure warming casing is used, wherein, best M=1,2 or 3, removes lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, makes the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture;
Pressure concentration difference left standstill in casing is adjusted to normal pressure, open concentration difference and leave standstill door between casing and cooling box, concentration difference is left standstill lithium ion battery in casing or battery pole piece is sent in cooling box, and coolant is inputted in cooling box, at M doubly within the total time that high pressure warming casing is used, wherein, preferably M=1,2 or 3, drops to the second predetermined temperature by the temperature of lithium ion battery or battery pole piece.
In the utility model, described quick cooling and concentration difference stating step can also carry out as follows, and namely cooling limit in limit leaves standstill and dewaters, and comprises the steps:
Open vaccum dewatering casing and concentration difference and leave standstill door between casing, the lithium ion battery in vaccum dewatering casing or battery pole piece are sent into concentration difference and to leave standstill in casing (need concentration difference to leave standstill pressure adjusting to substantially equal with the pressure in vaccum dewatering casing) in casing; At M doubly within the total time that high pressure warming casing is used, wherein, preferably M=1,2 or 3, removes lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, makes the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture; And in cooling box, input coolant simultaneously, the temperature of lithium ion battery or battery pole piece is dropped to the second predetermined temperature.
In the utility model, described concentration difference water-eliminating method can be leave standstill on casing in concentration difference at least to arrange drier and a circulating fan, in drier, be provided with drier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly circulates through drier; Also can be leave standstill casing circulation to described concentration difference to input the moisture content that produced by the gas dry station dry gas lower than 5ppm, leave standstill in casing in concentration difference and circulate, utilize moisture content to take away moisture content in lithium ion battery or battery pole piece further lower than the dry gas of 5ppm.
Preferably, described second predetermined temperature is between 25 degrees Celsius to 60 degrees Celsius.
Preferably, described second predetermined moisture is between 10ppm to 200ppm.
Preferably, described protective gas removes one or more the mist in air, inert gas or the nitrogen after oxygen gas component.
In the present embodiment, described drier can adopt quick lime or silica gel; Described deoxidier can adopt iron powder series deoxidier etc.
High pressure warming casing in said method and device, see Fig. 3, and vaccum dewatering casing can adopt the casing of same structure, described casing comprises outer case 100, heat-insulation layer 110 is provided with in the outside of described outer case 100, the inwall being parallel to described outer case 100 is provided with heating oiled-plate method 120 along direction, tunnel, spacing 130 is provided with between described heating oiled-plate method 120 and the inwall of described outer case 100, the cavity 121 for heat accumulation oil is provided with in described heating oiled-plate method 120, described cavity 121 communicates with the heating petrol station be arranged at outside outer case 100, the air port 122 communicated with spacing 130 is also provided with at described heating oiled-plate method 120, for hot air circulation, in described spacing 130, be provided with at least one circulating fan 140, the air outlet of described circulating fan 140 is provided with electric heater 150, the air circulation in casing is passed through described electric heater 150 by circulating fan 140, and temperature in casing is rapidly heated, in the material flows direction perpendicular to tunnel, be provided with the first thermal insulating door thermally insulated door 160 and the second thermal insulating door thermally insulated door 170, described first thermal insulating door thermally insulated door 160 and the second thermal insulating door thermally insulated door 170 can move relative to outer case, are beneficial to the turnover of lithium ion battery or battery pole piece, utilize the high deep fat temperature of described cavity 121 promoting the temperature in casing, can keep the temperature constant in casing on the other hand on the one hand, this with two thermal source, and adopt the high pressure warming casing of high pressure, the object be rapidly heated can be reached, shorten the heating-up time, realize and real the mating of preceding working procedure, vaccum dewatering casing adopts this structure, can accelerate except water speed, ensures the speeds match with high pressure warming casing.
For cooling box, its structure is substantially identical with described high pressure warming casing, and difference only need remove electric heater 150, and described cavity 121 is passed into coolant, as refrigerated brine, just can reach the object of cooling fast.
Leave standstill casing 61 as concentration difference can be designed to, structure as shown in Figure 4, comprise casing 200, drier 210 and a circulating fan 220 is provided with outside described casing 200, drier 230 is provided with in drier 210, the import 211 of drier 210 communicates with the inner chamber of casing 200, and the wind pipe 221 of described circulating fan 220 communicates with the inner chamber of described casing 200; The gas utilizing described circulating fan 220 that concentration difference is left standstill in casing 61 constantly circulates through drier 230, to reach the object that further removing concentration difference leaves standstill the moisture of lithium ion battery in casing 61 or battery pole piece 63.Drier in the present embodiment can adopt quick lime or silica gel.
Claims (2)
1. the high efficiency degree of depth of a lithium ion battery or battery pole piece dewaters baking line, it is characterized in that: the high pressure warming casing at least comprising continuous operation, vaccum dewatering casing and cooling box, described high pressure warming casing, vaccum dewatering casing and cooling box are interconnected to constitute tunnel structure, transition casing is provided with between at least two adjacent working box, described transition casing is used for when needs receive the lithium ion battery or battery pole piece of coming from a upper casing, first by the pressure adjusting in described transition casing to substantially equal with the pressure in a described upper casing, after lithium ion battery or battery pole piece are received and come, then by the pressure adjusting in transition casing to substantially equal with the pressure in next casing, and lithium ion battery or battery pole piece are sent in next casing described.
2. the high efficiency degree of depth of lithium ion battery according to claim 1 or battery pole piece dewaters baking line, it is characterized in that: before described high pressure warming casing, be provided with intensification transition casing, when described intensification transition casing is for receiving the lithium ion battery or battery pole piece of coming from a upper operation at ambient pressure, pressure in described intensification transition casing is substantially equal with atmospheric pressure, after lithium ion battery or battery pole piece are received and come, again by the pressure adjusting in intensification transition casing to substantially equal with the pressure in described high pressure warming casing, and lithium ion battery or battery pole piece are sent in described high pressure warming casing.
3. the high efficiency degree of depth of lithium ion battery according to claim 1 and 2 or battery pole piece dewaters baking line, it is characterized in that: between described high pressure warming casing and vaccum dewatering casing, be provided with vaccum dewatering transition casing, described vaccum dewatering transition casing is before the lithium ion battery received in high pressure warming casing or battery pole piece, by the pressure adjusting in described vaccum dewatering transition casing to substantially equal with the pressure in high pressure warming casing, after lithium ion battery or battery pole piece are received and come, again by the pressure adjusting in vaccum dewatering transition casing to substantially equal with the pressure in described vaccum dewatering casing, and lithium ion battery or battery pole piece are sent in described vaccum dewatering casing.
4. the high efficiency degree of depth of lithium ion battery according to claim 1 and 2 or battery pole piece dewaters baking line, it is characterized in that: between described vaccum dewatering casing and cooling box, be provided with cooled transition casing, described cooled transition casing is before the lithium ion battery received in vaccum dewatering casing or battery pole piece, by the pressure adjusting in described cooled transition casing to substantially equal with the pressure in vaccum dewatering casing, after lithium ion battery or battery pole piece are received and come, again by the pressure adjusting in cooled transition casing to substantially equal with the pressure in described cooling box, and lithium ion battery or battery pole piece are sent in described cooling box.
5. the high efficiency degree of depth of lithium ion battery according to claim 3 or battery pole piece dewaters baking line, it is characterized in that: between described vaccum dewatering casing and cooling box, be provided with cooled transition casing, described cooled transition casing is before the lithium ion battery received in vaccum dewatering casing or battery pole piece, by the pressure adjusting in described cooled transition casing to substantially equal with the pressure in vaccum dewatering casing, after lithium ion battery or battery pole piece are received and come, again by the pressure adjusting in cooled transition casing to substantially equal with the pressure in described cooling box, and lithium ion battery or battery pole piece are sent in described cooling box.
6. the high efficiency degree of depth of lithium ion battery according to claim 1 and 2 or battery pole piece dewaters baking line, it is characterized in that: after described cooling box, be also provided with concentration difference leave standstill casing, open cooling box and concentration difference and leave standstill door between casing, lithium ion battery in cooling box or battery pole piece are sent into concentration difference to be left standstill in casing, leave standstill in casing in described concentration difference, remove lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, make the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture.
7. the high efficiency degree of depth of lithium ion battery according to claim 3 or battery pole piece dewaters baking line, it is characterized in that: after described cooling box, be also provided with concentration difference leave standstill casing, open cooling box and concentration difference and leave standstill door between casing, lithium ion battery in cooling box or battery pole piece are sent into concentration difference to be left standstill in casing, leave standstill in casing in described concentration difference, remove lithium ion battery or battery pole piece moisture further by concentration difference water-eliminating method, make the moisture of lithium ion battery or battery pole piece drop to the second predetermined moisture.
8. the high efficiency degree of depth of lithium ion battery according to claim 6 or battery pole piece dewaters baking line, it is characterized in that: the device that described concentration difference water-eliminating method uses leaves standstill in casing in concentration difference at least to arrange drier and a circulating fan, in drier, be provided with drier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly circulates through drier.
9. the high efficiency degree of depth of lithium ion battery according to claim 7 or battery pole piece dewaters baking line, it is characterized in that: the device that described concentration difference water-eliminating method uses leaves standstill in casing in concentration difference at least to arrange drier and a circulating fan, in drier, be provided with drier, the gas that described circulating fan makes concentration difference leave standstill in casing constantly circulates through drier.
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| CN104134777A (en) * | 2014-06-12 | 2014-11-05 | 深圳市信宇人科技有限公司 | High-efficiency deep water removal method and drying line for lithium ion battery or battery pole piece |
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| CN104913601A (en) * | 2014-12-29 | 2015-09-16 | 深圳市信宇人科技有限公司 | Method for baking lithium ion battery or battery pole piece in tunnel mode |
| CN106292809A (en) * | 2016-10-22 | 2017-01-04 | 深圳市信宇人科技有限公司 | It is applicable to lithium battery or the humiture Tracking monitoring system of pole piece vacuum bakeout line and method |
| CN108511677A (en) * | 2018-04-26 | 2018-09-07 | 力信（江苏）能源科技有限责任公司 | Battery pole coil heating device |
| CN109818045A (en) * | 2019-01-15 | 2019-05-28 | 梅承寨 | Lithium battery production technology |
| CN115435557B (en) * | 2022-08-30 | 2024-06-18 | 深圳市曼恩斯特科技股份有限公司 | Lithium battery drying equipment and drying method |
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| CN2896161Y (en) * | 2005-11-23 | 2007-05-02 | 沈阳航天新阳速冻设备制造有限公司 | Efficient energy-saving continuous vacuum refrigeration drying device |
| KR101193169B1 (en) * | 2010-11-16 | 2012-10-19 | 삼성에스디아이 주식회사 | Apparatus and method for drying electrode plate |
| CN102110803B (en) * | 2011-01-28 | 2012-09-26 | 福建南平南孚电池有限公司 | Drying method for positive electrode material of lithium ion battery |
| CN203190761U (en) * | 2013-03-29 | 2013-09-11 | 潍坊易泰生物科技有限公司 | Drying equipment for citronellal production |
| CN103344097B (en) * | 2013-06-03 | 2015-01-28 | 奇瑞汽车股份有限公司 | Lithium ion battery cell drying method and lithium ion battery |
| CN204067485U (en) * | 2014-06-12 | 2014-12-31 | 深圳市信宇人科技有限公司 | The high efficiency degree of depth of lithium ion battery or battery pole piece dewaters baking line |
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| CN104134777A (en) * | 2014-06-12 | 2014-11-05 | 深圳市信宇人科技有限公司 | High-efficiency deep water removal method and drying line for lithium ion battery or battery pole piece |
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