CN202700767U

CN202700767U - Drying oven for heating and drying device of battery pole piece double-sided coating machine

Info

Publication number: CN202700767U
Application number: CN 201220251214
Authority: CN
Inventors: 钟智帆
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-31
Filing date: 2012-05-31
Publication date: 2013-01-30
Anticipated expiration: 2022-05-31

Abstract

The utility model discloses a drying oven for a heating and drying device of a battery pole piece double-sided coating machine. The drying oven comprises a heating channel, a guide roller and a heating delivering device, wherein the guide roller and the heating delivering device are disposed inside the heating channel, and the heating delivering device is a recycling flow-equalizing hot air device. The heating delivering device comprises return air ducts, an air blower, a heater, heat supply pipelines and an air supply duct, wherein outlets of a first heat supply pipeline and a second heat supply pipeline are respectively positioned on the front end and the rear end of the inside of the heating channel, and inlets of a first return air duct and a second return air duct are both positioned on the side wall of the middle of the heating channel. The recycling flow-equalizing hot air device can guarantee temperature uniformity of an upper air duct and a lower air duct inside the drying oven, drying speed of each part of a battery pole piece is consistent, and a coating width is adjusted to reach up to 800 millimeters so that the phenomenon of edge curling can not occur. Under the condition that the drying speed of each part of the battery pole piece is consistent, the coating width is added by means of increasing the length of the heating and drying device. At the same time, operating speed of the coating machine is improved, so that production efficiency of the battery pole piece double-sided coating machine is enhanced significantly.

Description

The baking oven that is used for the battery pole piece two-sided coating machine heat drying apparatus

Technical field

The utility model relates to a kind of battery pole piece coating machine, and particularly a kind of is the baking oven of the battery pole piece conveying uniform hot blast of dry run for the battery pole piece two-sided coating machine heat drying apparatus.

Background technology

Lithium dynamical battery, as green energy resource, the whole nation is widelyd popularize.But, major obstacle in evolution is expensive, and it is too many that reason is exactly complex manufacturing, power consumption, wherein, the battery pole piece two-sided coating machine heat drying apparatus is exactly a very important link, and described heat drying apparatus is to be connected and composed by the baking oven that several can independent operation.

In the prior art, the used oven structure of heat drying apparatus is as follows:

Heat tunnel, the heating that baking oven comprises by the made shell of steel plate, be close to heat-insulation layer that shell places the baking oven inwall, surrounded by heat-insulation layer send hot charging to put and power supply is supplied with and control system.

Heat tunnel is divided into upper air duct and lower air duct, be in the wind and lower air duct in be respectively equipped with carrying battery pole piece base material and many deflector rolls that this base material is moved, deflector roll is responsible for described base material is delivered to by lower air duct from the front end of described heat drying apparatus the rear end of heat drying apparatus, be delivered to again the front end of heat drying apparatus by upper air duct from the rear end of heat drying apparatus, thus, up and down two coat side that battery pole piece coated obtain heat drying.

It is by sending hot blast for described upper lower air duct that described heating send hot charging to put, flow back to the device of wind, it is by ajutage, heat supply pipeline, heater, air blast and exhaust column consist of, the exhaust column entrance of upper lower air duct all is located at the front end of baking oven and is laid respectively at the below of upper air duct deflector roll and the below of lower air duct deflector roll, the air that is entered by the exhaust column entrance is through air blast, heater and heat supply pipeline are sent by ajutage, the rear end that baking oven all is located in the outlet of the ajutage of upper lower air duct lays respectively at the top of upper air duct deflector roll and the top of lower air duct deflector roll, that is to say, air intake is entered by the front end of baking oven, via being located at the outer air blast of baking oven, heater and heat supply pipeline are discharged by the rear end again.

Said structure has the following disadvantages:

1) because heat drying apparatus is to be that uncovered baking oven (except former and later two end faces of heat drying apparatus are the closed state) is formed by connecting by several front/rear ends, said structure, from second baking oven of heat drying apparatus, the hot blast that the ajutage of previous baking oven is discharged is entered the front end face of adjacent next baking oven by end face thereafter, exhaust column through next baking oven blows out from the rear end face of this baking oven again, cumulative with this, at second baking oven of whole heat drying apparatus between the penult baking oven, will form one no small " draught ", " draught " wind speed is very large, first joint advances cold wind, the minor details thermal wind exhausting, because battery pole piece base material frivolous (being the aluminium foil of positive plate or the Copper Foil of negative plate), this not only makes the battery pole piece that is arranged in baking oven, under the blowing of described " draught ", jolted or wave and affect uniform drying and the product quality of battery pole piece, and, also can make heat in the baking oven along with described " draught " is discharged into outside the heat drying apparatus, both loses heat, can make again heat drying apparatus exit temperature very high, cause the operating personnel can't work at this place.

2) sent into the hot-air flow of upper lower air duct by heat supply pipeline, because of the said structure reason, cause its backwind tube porch to form negative pressure, air-flow flows out from the ajutage of being located at the baking oven rear end through backwind tube, air blast, heater and enters the backwind tube porch that next joint baking oven is positioned at front end again, by that analogy, it is inhomogeneous to cause being heated in the whole heat tunnel, and temperature is uneven; And described air-flow is when discharging below battery pole piece base material edge flows into deflector roll above by deflector roll, air-flow is larger at the flow velocity at battery pole piece base material edge, thus, cause again battery pole piece zone line and edge rate of drying inconsistent, the edge is done soon, the centre dries slow, if heating is continued in the place of having done, will produce " crimping " phenomenon, the maximum harm of " crimping " is to cause easily base material edge and the oven interior mechanism of rolling up to come in contact, scraping causes base material to be pulled, even fracture, the loss that causes thus is very serious, for reducing the loss, blowing out, the cooling breaks in production, rescue unspoiled base material, so, both lose heat energy, wasted again material.

3) because the non-uniform temperature in the heat tunnel, inconsistent with the rate of drying at edge in the middle of the battery pole piece, caused again the battery pole piece coating width not increase, in the situation of the heat drying apparatus of determining length, the easier generation of wide battery pole piece " crimping " phenomenon, thus, causing enhancing productivity by the coating width that lengthens battery pole piece is greatly limited, and coating width of the prior art is only within 500mm.

Summary of the invention

The technical problems to be solved in the utility model provides and a kind ofly can greatly improve uniform heat distribution in the baking oven, and can make the consistent baking oven that is used for the battery pole piece two-sided coating machine heat drying apparatus of battery pole piece each several part coating rate of drying in this baking oven.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

Baking oven for the battery pole piece two-sided coating machine heat drying apparatus of the present utility model, comprise the heat tunnel that is fixed on the support, be arranged on the deflector roll that the supporting substrate in the heat tunnel moves and send hot charging to put, the described hot charging that send is set to circulation current-sharing hot air apparatus, it is by first device and the second installation composition, two devices include backwind tube that successively connection communicates, are arranged on heat tunnel outer air blast and heater, heat supply pipeline and ajutage, wherein

The outlet of the first heat supply pipeline of first device is arranged in the front end of heat tunnel upper air duct deflector roll top and by the first ajutage hot blast is sent into upper air duct, and the entrance of the first return air duct of first device is positioned on the middle sidewall of described upper air duct deflector roll below heat tunnel;

The outlet of the second heat supply pipeline of the second device is arranged in the rear end of heat tunnel lower air duct deflector roll top and by the second ajutage hot blast is sent into lower air duct, and the entrance of the second return air duct of the second device is positioned on the middle sidewall of described lower air duct deflector roll below heat tunnel.

The structure of described the first ajutage and the second ajutage is identical with shape, and its cross sectional shape is circle, rectangle or ellipse.

Be provided with at least one at described ajutage near the tube wall of deflector roll one side and be shaped as circle, square or oval-shaped tuyere notch, the density of setting of described tuyere notch is by center to the edge of described ajutage successively decreasing.

The total gas couette that is flowed out by whole tuyere notches on the described ajutage is more than or equal to the gas flow of the described return air duct entrance of correspondence.

Described tuyere notch by stamping machine by being stamped to form in the export-oriented ajutage of ajutage.

Be interval with the baking oven form at the heat tunnel sidewall, be provided with temperature-controlled cabinet in the centre position of this sidewall, described air blast and heater are located at the below of heat tunnel.

At least one is outside inclined plane, upper end for former and later two end faces of described heat tunnel.

Angle between described inclined plane and the vertical plane is 0-0.75 degree.

Front end face or rear end face at described heat tunnel are provided with the insulation door leaf, and the insulation door leaf is provided with the slit that allows described base material to pass, and is provided with side by side two instrument boxs in front end or the rear end of described sidewall.

At the shrouding that is provided with below the described insulation door leaf the uncovered sealing between described support and heat tunnel shell.

Compared with prior art, the used baking oven of the utility model has circulation current-sharing hot air apparatus, guarantee that the up and down wind duct temperature in the baking oven is even, battery pole piece is heated evenly in dry run, consistent to the edge rate of drying from the centre, thereby, coating width transferred widely still can not produce " crimping " phenomenon to 800mm, in the consistent situation of battery pole piece each several part rate of drying, by increasing the length of heat drying apparatus, lengthen coating width, simultaneously, improve the coating machine running speed, just can greatly improve the production efficiency of battery pole piece double spread.

Description of drawings

Fig. 1 is the utility model schematic diagram.

Fig. 2 is A-A cutaway view among Fig. 1.

Fig. 3 is that the upper air duct cutaway view is looked on the left side of Fig. 1.

Fig. 4 is that the lower air duct cutaway view is looked on the left side of Fig. 1.

Fig. 5 is the first ajutage of the present utility model and the second ajutage schematic diagram.

The Figure of description mark is as follows:

Baking oven 1, front end 11, rear end 12, shell 13, support 14, insulation door leaf 15, shrouding 16, temperature-controlled cabinet 17, instrument box 18, baking oven form 19, heat tunnel 2, deflector roll 21, battery pole piece 22, inclined plane 23, angle β, air blast 24, heater 25, upper air duct 3, first device 31, the first heat supply pipeline 32, the first ajutage 33, the first return air duct 34, lower air duct 4, the second device 41, the second heat supply pipeline 42, the second ajutage 43, the second return air duct 44, tuyere notch 5.

The specific embodiment

The utility model is described in further detail for following structure drawings and Examples.

Such as Fig. 1, shown in 2, baking oven for the battery pole piece two-sided coating machine heat drying apparatus of the present utility model, for the uncovered vertical cross-section shape of both ends of the surface is square heat tunnel 2, the shell 13 of this heat tunnel 2 is made and be fixed on the support 14 by steel plate, the wall of section is provided with heat-insulation layer within it, 2 minutes upper air ducts 3 of heat tunnel and lower air duct 4, be equipped with the many deflector rolls 21 that carrying battery pole piece base material 22 moves in each air channel, every deflector roll 21 is horizontally disposed with and links to each other with drive unit, described deflector roll 21 is by the left side among front end 11(Fig. 1 of heat tunnel 2) interval arranges and extends to the right among rear end 12(Fig. 1 of heat tunnel 2), under the driving of drive unit, the deflector roll 21 of rotation will carry battery pole piece base material 22 placed on it to move by the direction of setting.

The hot charging that send of the utility model baking oven 1 is set to circulation current-sharing hot air apparatus, this device is comprised of first device 31 and the second device 41 again, two devices include return air duct that successively connection communicates, be arranged on heat tunnel 2 outer air blast 24 and heater 25, heat supply pipeline and ajutage, wherein

As shown in Figure 3, the outlet of the first heat supply pipeline 32 of first device 31 is arranged in the front end 11 of heat tunnel 2 upper air ducts 3 deflector rolls 21 tops and by the first ajutage 33 hot blast is sent into upper air duct 3, and the entrance of the first return air duct 34 of first device 31 is positioned on the sidewall of described upper air duct 3 deflector rolls 21 below heat tunnels 2 centres;

As shown in Figure 4, the entrance that the outlet of the second heat supply pipeline 42 of the second device 41 is arranged in the rear end 12 of heat tunnel 2 lower air ducts 4 deflector rolls 21 tops and by the second ajutage 43 hot blast is sent into the second return air duct 44 of lower air duct 4, the second devices 41 is positioned on the sidewall of described lower air duct 4 deflector rolls 21 below heat tunnels 2 centres.

Above-mentioned air-supply and air return structure, make the track that hot blast in upper air duct 3 and the lower air duct 4 flows be: hot blast rides on the deflector roll 21 at battery pole piece base material 22() upper surface by the centre to the edge, from top to bottom, by the rear and front end of passage to the middle part, discharge from being positioned at the middle return air duct entrance that is positioned at the correspondence on heat tunnel 2 sidewalls in deflector roll 21 belows, thus, so that be heated evenly everywhere in the whole heat tunnel 2, temperature equalization, thereby can improve the battery pole piece coating uniformity of rate of drying everywhere, so that the utility model both can be increased to 800mm with the coating width of battery pole piece, can improve again the running speed of equipment, thereby, enhance productivity, reduce energy resource consumption.

As shown in Figure 5, the utility model further improves: described the first ajutage 33 is all identical with shape with the second ajutage 43 structures, its cross sectional shape is circular, rectangle or ellipse, made by sheet metal, tube wall near deflector roll 21 one sides on it is provided with a plurality of circles that are shaped as, square or oval-shaped tuyere notch 5, the hot blast that is blown out by tuyere notch 5 is over against the battery pole piece base material 22 that rides on the deflector roll 21, the density that tuyere notch 5 arranges, center to edge by described ajutage successively decreases, make the zone line institute received heat of battery pole piece base material 22 larger than the edge, remedied thus on the middle battery pole piece base material 22 that causes soon because of the hot blast flow velocity at battery pole piece base material 22 edges in the middle of and the inconsistent defective of fringe region rate of drying.

Another improvement of the present utility model is; The total gas couette that is flowed out by all tuyere notches 5 on the described ajutage should be slightly larger than or equal the gas flow of corresponding return air duct porch, this air channel, because the discharge area of hot-flow flue is controlled, gas in the heat tunnel 2 is the same like " being suppressed ", can make thus and be subjected to the thermal pressure homeostasis even in the air channel, this change air-flow makes it balanced method, is commonly called as " air-flow equalization ".

Because said structure so that battery pole piece in the heat drying process, rate of drying is balanced, " crimping " phenomenon can not appear, thereby, can enhance productivity by the length (namely increasing the number of baking oven 1) that lengthens battery pole piece coating width and/or increase heat drying apparatus, and, the circulating air in the utility model baking oven 1 also greatly reduced heat loss, reduced energy consumption.

Another improvement of the present utility model is: by being stamped to form in the export-oriented ajutage of ajutage, this structure burr of blurting out is inside, is difficult for causing the operating personnel injured by stamping machine for described tuyere notch 5.The tuyere notch 5 of prior art mostly is the edge-shaped tuyere, because the cutter seam is narrow and small, edge of a knife wind speed is higher, so, above battery pole piece base material 22, form one powerful air-flow waterfall, for just coating, the coating that not yet solidifies, very harmful, cause easily described paint coatings surface to be uneven, affect product quality.In addition, the edge-shaped tuyere is made complicated, and makes the field operation personnel to its dismounting or maintenance the time, is very easily scratched by the sharp tip of edge-shaped tuyere.

Sidewall at described baking oven 1 is interval with a plurality of forms 19, and this form 19 is convenient to the residing state of the art of relevant staff (such as operating personnel, technique person or technician etc.) observation baking oven 1 heat tunnel, 2 interior products.

Centre position below baking oven 1 sidewall is positioned at heat tunnel 2 is provided with temperature-controlled cabinet 17, and both convenient working personnel operation, observations take full advantage of again space (need to temperature control box be set separately in other places).In like manner, described air blast 24 and heater 25 also are located at the below of the heat tunnel 2 of baking oven 1.

Of the present utility model further the improvement again is: with in former and later two end faces of the heat tunnel 2 of described baking oven 1 at least one as acclivitous end face, the upper end edge horizontal direction of this end face is towards heat tunnel 2 extensions, the angle β of end face and vertical plane in 0-0.75 degree scope, 12 of baking oven 1 front and back ends be provided with following three kind of situation:

1) when described baking oven 1 was installed in the position of second section in the battery pole piece two-sided coating machine heat drying apparatus or joint second from the bottom, the rear end face of the baking oven 1 of second section was made as inclined plane 23, and its front end face is made as vertical plane; The front end face of the baking oven 1 of described joint second from the bottom is made as inclined plane 23, and end face is made as vertical plane thereafter.

2) when described baking oven 1 was installed in the 3rd in battery pole piece two-sided coating machine heat drying apparatus joint to the position of joint third from the bottom, former and later two end faces of described baking oven 1 were inclined plane 23.

3) when described baking oven 1 during as the head of battery pole piece two-sided coating machine heat drying apparatus joint and periproct, former and later two end faces of described baking oven 1 are the plane perpendicular with ground.

12 at end adopts inclined plane 23 before or after the described baking oven 1, can make the battery pole piece two-sided coating machine heat drying apparatus of being installed by this baking oven 1 combination be arch, namely the mid portion of this heat drying apparatus raises up than its two ends, its advantage is: both can take full advantage of space resources, reduce the equipment cost of floor space, can make again in the process that battery pole piece base material 22 transmits in heat drying apparatus more steady.

When baking oven of the present utility model 1 is used for the head joint of battery pole piece two-sided coating machine heat drying apparatus and periproct, be equipped with on the front end face of first joint baking oven 1 and on the rear end face of periproct baking oven 1 can open and close insulation door leaf 15, insulation door leaf 15 is provided with two horizontal narrow slits, respectively corresponding upper air duct 3 and lower air duct 4 arrange, and described battery pole piece base material 22 thus slit passes and enters in the described heat drying apparatus.

Avoid it to distributing in the air for saving heat energy, below described insulation door leaf 15, be provided with the uncovered shrouding that closes 16 with described

support

14 and 13 formation of heat tunnel 2 shells.

In order to carry out FIXED MANAGEMENT, to promote field management level and convenient working personnel operation, the head that instrument box 18 is located at respectively described heat drying apparatus saves the below of baking oven 1 front end 11 sidewalls and the below of periproct baking oven 1 rear end 12 sidewalls.

The described heat drying apparatus of being installed by the utility model combination has the following advantages:

1) increase the coating dry length:

Every joint baking oven 1 length of the present utility model can be increased to 4 meters by 3 meters of prior art, increasing drying equipment length is to improve the best approach of effect, because drying equipment length doubles, determine in the constant situation in the drying process time, the speed of the equipment operation of drying stage just doubles, the process velocity that also is battery pole piece just doubles (battery pole piece that is coating in the unit interval increases), production efficiency also just doubles, and the investment that increases only is the several less expensive baking ovens 1 of installing more, other are worth higher coater head, uncoiler and winder do not increase, namely in the situation of little input, obtained higher income.

2) increase coating width:

The length of heat drying apparatus has increased, (base material is the technique carrier of battery pole piece coating to elongated coated substrate, as: the aluminium foil of positive plate or the Copper Foil of negative plate) be difficult for stablizing in baking oven 1 interior operation, can vacillate now to the left, now to the right, (namely this heat drying apparatus is arch by changing base material width and the running orbit of base material in baking oven 1, the base material operation changes curve movement into by original traveling priority, improve base material to the adhesive force of deflector roll 21), just can both solve the base material traveling comfort, improve again production efficiency (being obtained by the coating width that increases base material).

Can be with the battery pole piece coating width by original 500mm broadening to 800mm, can within the unit interval, enhance productivity thus.Actual baking oven 1 inner width is 900mm, and nominal 800mm differs from 100 and gives over to base material activity surplus.If running orbit is controlled well, the dead beat of not wafing, production 820 is also out of question.Battery pole piece coating machine production scale of the prior art is little, and the oven interior width of heat drying apparatus is 600mm only, owing to the aforementioned techniques reason, and wind Dutch roll, the as many as 500mm of battery pole piece coating width.

Claims

1. baking oven that is used for the battery pole piece two-sided coating machine heat drying apparatus, comprise the heat tunnel (2) that is fixed on the support (14), be arranged on the deflector roll (21) that the supporting substrate in the heat tunnel (2) moves and send hot charging to put, it is characterized in that: the described hot charging that send is set to circulation current-sharing hot air apparatus, it is comprised of first device (31) and the second device (41), two devices include the backwind tube that successively connection communicates, be arranged on heat tunnel (2) outer air blast (24) and heater (25), heat supply pipeline and ajutage, wherein

The outlet of first heat supply pipeline (32) of first device (31) is arranged in the front end (11) of heat tunnel (2) upper air duct (3) deflector roll (21) top and by the first ajutage (33) hot blast is sent into upper air duct (3), and the entrance of first return air duct (34) of first device (31) is positioned on the middle sidewall of described upper air duct (3) deflector roll (21) below heat tunnel (2);

The second outlet of installing second heat supply pipeline (42) of (41) is arranged in the rear end (12) of heat tunnel (2) lower air duct (4) deflector roll (21) top and by the second ajutage (43) hot blast is sent into lower air duct (4), and the entrance of second return air duct (44) of the second device (41) is positioned on the middle sidewall of described lower air duct (4) deflector roll (21) below heat tunnel (2).

2. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 1, it is characterized in that: described the first ajutage (33) is identical with shape with the structure of the second ajutage (43), and its cross sectional shape is circle, rectangle or ellipse.

3. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 2, it is characterized in that: be provided with at least one at described ajutage near deflector roll (21) tube wall simultaneously and be shaped as circle, square or oval-shaped tuyere notch (5), the density of setting of described tuyere notch (5) is by center to the edge of described ajutage successively decreasing.

4. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 3 is characterized in that: the total gas couette that is flowed out by whole tuyere notches (5) on the described ajutage is more than or equal to the gas flow of the described return air duct entrance of correspondence.

5. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 4 is characterized in that: described tuyere notch (5) by stamping machine by being stamped to form in the export-oriented ajutage of ajutage.

6. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 5, it is characterized in that: be interval with baking oven (1) form (19) at heat tunnel (2) sidewall, be provided with temperature-controlled cabinet (17) in the centre position of this sidewall, described air blast (24) and heater (25) are located at the below of heat tunnel (2).

7. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 6 is characterized in that: at least one is outside inclined plane (23), upper end former and later two end faces of described heat tunnel (2).

8. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 7 is characterized in that: the angle (β) between described inclined plane (23) and the vertical plane is 0-0.75 degree.

9. each described baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 1-6, it is characterized in that: front end (11) face or rear end (12) face in described heat tunnel (2) are provided with insulation door leaf (15), insulation door leaf (15) is provided with the slit that allows described base material to pass, and is provided with side by side two instrument boxs (18) in front end (11) or rear end (12) of described sidewall.

10. the baking oven for the battery pole piece two-sided coating machine heat drying apparatus according to claim 9 is characterized in that: be provided with the shrouding (16) with the uncovered sealing between described support (14) and heat tunnel (2) shell (13) in the below of described insulation door leaf (15).