CN213959101U - Battery pole piece lug subregion heating stretching device - Google Patents
Battery pole piece lug subregion heating stretching device Download PDFInfo
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- CN213959101U CN213959101U CN202022903779.1U CN202022903779U CN213959101U CN 213959101 U CN213959101 U CN 213959101U CN 202022903779 U CN202022903779 U CN 202022903779U CN 213959101 U CN213959101 U CN 213959101U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a battery pole piece utmost point ear subregion heating stretching device. The heating and stretching device comprises a zone independent temperature control heating roller and an active traction steel roller; the roller body of the partitioned independent temperature control heating roller is provided with a plurality of heating zones which are independently controlled in temperature and are separated by the partition area along the axial direction; and an adjustable partition cooling air knife is further arranged outside the partition independent temperature control heating roller. The roller body of the partitioned independent temperature control heating roller is provided with a plurality of heating zones with independent temperature control in the axial direction, the roller body can be heated with independent temperature control in different partitions, the condition that the battery pole pieces in a plurality of pole lug zones are folded in rolling production operation is reduced, and the production yield of the battery pole pieces is improved. The active traction steel roller can be used for traction and stretching of the battery pole piece, so that the battery pole piece is kept flat. In addition, a roller body heating temperature measuring sensor, a non-contact type online temperature measuring sensor, a floating swing roller and a tension detecting roller are further arranged, so that the production yield of the battery pole piece can be further effectively improved.
Description
Technical Field
The utility model relates to a lithium battery pole piece production facility technical field, concretely relates to battery pole piece utmost point ear subregion heating stretching device.
Background
Currently, in order to relieve the endurance anxiety of users, the lithium battery is urgently required to be developed towards the direction of high energy density. Therefore, in the produced battery pole piece, the material coating thickness of the coating area of the battery pole piece is thicker and thicker, and correspondingly, the density of the battery pole piece after being rolled and pressed in the production process is higher and higher. Under higher and higher rolling pressure, the situation that no coated pole piece tab area wrinkles is more and more, and the production yield of the battery pole piece is not improved. Therefore, the improvement of the production process is urgently needed, otherwise, the yield of the rolling production of the battery pole piece is lower and lower.
In the actual production of battery pole pieces, zebra-coated battery pole pieces, such as those having four tab regions and three coating regions, are encountered. When the zebra-coated battery pole piece is rolled, two sides of the two middle tabs are restrained by the coating area, only one side of each of the two side tabs is restrained by the coating area, and the other side of each of the two side tabs extends naturally, so that the two types of tabs are different in stress condition, the required heating temperature is also distinguished, and therefore the tabs at different positions are required to be independently heated in a partition mode.
In the current production, an electromagnetic induction coil is directly acted on a pole piece lug to enable the pole lug to self-heat so as to achieve the purpose of heating the pole lug, but the heating mode can seriously affect the mechanical strength and the microstructure form of a pole lug material and further affect the service performance and the subsequent production process of the pole piece lug.
SUMMERY OF THE UTILITY MODEL
For the realization to the subregion heating of pole piece utmost point ear, easy fold, the yield of the no coating pole piece utmost point ear district of solving battery pole piece among the prior art under the roll-in production operation is low to and the direct subregion heating that makes utmost point ear spontaneous heating can lead to the problem that the pole piece quality seriously descends, the utility model provides a battery pole piece utmost point ear subregion heating stretching device.
The purpose of the utility model is realized through the following technical scheme.
A battery pole piece lug zone heating stretching device sequentially comprises a zone independent temperature control heating roller and an active traction steel roller along the advancing direction of a battery pole piece; the partitioned independent temperature control heating roller can perform partitioned temperature control heating on the battery pole piece; the active traction steel roller can perform traction and stretching on the battery pole piece;
the partitioned independent temperature control heating roller comprises a roller body; the roller body is provided with a plurality of heating zones with independent temperature control along the axial direction, and two adjacent heating zones are separated by a spacer;
the outside of the partitioned independent temperature control heating roller is also provided with an adjustable partitioned cooling air knife which is used for directionally and adjustably cooling the partitioned independent temperature control heating roller in a partitioned air cooling mode.
In a preferred embodiment, the material of the partitioned independent temperature control heating roller comprises aluminum alloy, carbon steel and stainless steel.
In a more preferred embodiment, the partitioned independent temperature control heating roller is made of stainless steel.
In a preferred embodiment, the roller surface of the partitioned independent temperature control heating roller is made of an integral metal material and is subjected to chromium plating treatment, or is of a double-layer structure, the bottom layer is an assembled structure with heat insulation rings, and the surface layer is an integrally-coated high-temperature-resistant silica gel structure.
In a preferred embodiment, a plurality of sections of mutually independent spiral electric heating wires are axially distributed in a roller body of the partitioned independent temperature control heating roller, and the spiral electric heating wires are in contact with the roller body; the part of the roller body corresponding to each independent spiral electric heating wire is a heating zone.
In a preferred embodiment, a plurality of sections of mutually independent electromagnetic induction coils are axially distributed inside or outside a roller body of the partitioned independent temperature control heating roller, and the electromagnetic induction coils and the roller body are arranged in a non-contact manner; the part of the roller body corresponding to each independent electromagnetic induction coil is a heating area.
In a more preferable embodiment, shaft heads are arranged at two ends of the roller body of the partitioned independent temperature control heating roller, and a channel capable of leading out an internal electric circuit is formed in each shaft head.
In a preferred embodiment, the parts, corresponding to the space between two adjacent heating zones, inside the roller body of the partitioned independent temperature control heating roller are filled with heat insulation materials; the part of the roller body filled with the heat insulation materials is a spacer area.
In a more preferred embodiment, the battery pole piece is a zebra-coated pole piece having four tab regions and three coating regions, wherein the three coating regions are alternately distributed between the four tab regions;
the roll body has the zone of heating of three independent accuse temperature along the axial, and wherein, the zone of heating in the middle of can corresponding the cover heating the middle twice utmost point ear district of battery sheet, two zones of heating of both sides can correspond respectively and cover the heating the two utmost point ear districts of both ends side of battery sheet.
In a preferred embodiment, each heating zone with independent temperature control is respectively provided with a roller heating temperature measuring sensor which is independent of each other.
In a preferred embodiment, a non-contact online temperature measuring sensor is further arranged outside the partitioned independent temperature control heating roller and used for online measuring the heating temperature of the battery pole piece at different positions along the transverse direction.
In a preferred embodiment, the adjustable zone cooling air knife comprises a lockable rotating rod and a plurality of air knife elements independent of each other; the plurality of mutually independent air knife elements are arranged on the lockable rotating rod along the axial direction;
the air knife element is provided with a compressed air quick connector and an air knife nozzle communicated with the compressed air quick connector; the air knife element is also provided with a wind pressure regulating element; and the air knife nozzles of the air knife elements which are independent from each other are respectively in one-to-one correspondence with the heating zones of the partitioned independent temperature control heating roller.
In a more preferred embodiment, both ends of the lockable rotation lever are provided with locking members for preventing the lockable rotation lever from rotating.
In a preferred embodiment, a clamping rubber roller is further arranged outside the active traction steel roller.
In a preferred embodiment, a floating swing roller is arranged between the roller outlet end side of the partitioned independent temperature control heating roller and the roller inlet end side of the active traction steel roller; and a tension detection roller is further arranged on the side of the roller feeding end of the partitioned independent temperature control heating roller.
Compared with the prior art, the utility model has the advantages of as follows and beneficial effect:
the utility model discloses an among the battery pole piece utmost point ear subregion heating stretching device, the roll body of the independent accuse temperature warming mill of subregion of setting has the zone of heating of a plurality of independent accuse temperatures along the axial, it includes heliciform heating wire or electromagnetic induction coil to correspond zone of heating department setting, can independently carry out accuse temperature heating respectively to the zone of heating of roll body, and separate by the heat insulating zone of filling thermal insulation material between two adjacent zones of heating, when battery pole piece crosses the roller and independently controls the temperature warming mill of subregion, the roll surface of the zone of heating of a plurality of independent accuse temperatures can carry out the subregion heating to the multichannel utmost point ear district of battery pole piece respectively, thereby reduce the battery pole piece in multichannel utmost point ear district and appear the condition of fold in the roll-in production operation, improve the production yield of battery pole piece.
And compared with the mode that the electromagnetic induction coil directly acts on the pole piece lug, the heating roller directly heats the pole piece lug in a contact manner by the roller surface corresponding to the heating area of the partitioned independent temperature control heating roller, so that the heating rolling of the pole piece lug by the roller body is ensured, the influence on the mechanical property and the microstructure form of a pole piece material is effectively avoided, and the use performance of the pole piece lug is ensured.
The heating area of the partitioned independent temperature control heating roller is also provided with a roller body heating temperature measurement sensor which can detect the temperature of the heating area in real time; meanwhile, a non-contact online temperature measuring sensor is arranged outside the partitioned independent temperature control heating roller, so that the heating temperature of the battery pole piece lug can be monitored in real time. And the roller heating temperature measuring sensor and the non-contact online temperature measuring sensor can form closed-loop connection with the heating element through the controller, so that the closed-loop control of the heating temperature of the battery pole piece lug is realized, the heating temperature of the battery pole piece lug is controlled in real time, the phenomenon that the heating temperature is too high or too low is avoided, and the production yield of the battery pole piece is further effectively improved.
The device for heating and stretching the electrode lug of the battery pole piece in a subarea manner is also provided with an active traction steel roller which can be used for traction and stretching the battery pole piece so as to keep the battery pole piece flat. In addition, the floating swing roller, the clamping rubber roller, the tension detection roller and the active traction steel roller can realize the traction and stretching effects of the pole piece, effectively reduce the wrinkling condition of the battery pole piece, form a tension closed loop with the controller, further improve the control of the roll-passing tension of the battery pole piece and greatly ensure the production quality of the battery pole piece.
Drawings
Fig. 1 is a schematic structural view of the working principle of the partitioned heating and stretching device for the battery pole piece and the pole ear in the specific embodiment of the invention;
FIG. 2 is a schematic view of the working principle of a partitioned heating roller for separately heating a battery pole piece;
FIG. 3 is a schematic structural view of an adjustable zone cooling air knife;
the attached drawings are marked as follows: 1-roller press roller, 2-zone independent temperature control heating roller, 21-roller body, 211-heating zone, 212-spacing zone, 213-shaft head, 22-heating element, 23-roller body heating temperature measurement sensor, 3-active traction steel roller, 4-adjustable zone cooling air knife, 41-lockable rotating rod, 42-air knife element, 421-compressed air quick joint, 422-air knife nozzle, 423-air pressure regulating element, 43-locking element, 5-non-contact online temperature measurement sensor, 6-clamping rubber roller, 7-floating swinging roller, 8-tension detection roller, 9-battery pole piece, 901-pole ear zone and 902-material zone.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following specific embodiments and accompanying drawings, but the scope of protection and the implementation of the present invention are not limited thereto. In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "axial", "horizontal", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when in use, and are only used for distinguishing the description, and are only used for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element that is referred to must have a specific position, be constructed in a specific position, and be operated, and therefore should not be construed as limiting the present invention, nor should it be construed as indicating or implying relative importance.
The utility model discloses a battery pole piece utmost point ear subregion heating stretching device, it is shown to see figure 1, sets up the roll-out side at the roll squeezer, and battery pole piece 9 gets into to this battery pole piece utmost point ear subregion heating stretching device promptly after the roller is crossed from roll squeezer roll 1, heats the roll-in and tensile.
The battery pole piece lug partitioned heating and stretching device sequentially comprises a partitioned independent temperature control heating roller 2 and an active traction steel roller 3 along the advancing direction of a battery pole piece 9. The heating roller 2 with the partitioned independent temperature control is a steel roller, the roller surface of the steel roller is made of an integral metal material and is subjected to chromium plating treatment, or the heating roller is of a double-layer structure, the bottom layer is of an assembled structure with a heat insulation ring, and the surface layer is of a layer of integrally-coated high-temperature-resistant silica gel structure.
The battery pole piece 9 is provided with a plurality of partitioned pole ear areas, a material area is arranged between the adjacent pole ear areas, and the partitioned independent temperature control heating roller 2 can perform partitioned temperature control heating on the battery pole piece 9 to realize the partitioned heating of the plurality of pole ear areas. Moreover, the heating of the electrode lug area of the battery electrode plate 9 in a subarea manner is directly carried out heat transfer and heat radiation by the roller surface of the subarea independent temperature control heating roller 2, the heating mode that the electrode lug is self-heated or the similar electrode lug is self-heated by directly acting an electromagnetic induction coil on the electrode lug area of the electrode plate is abandoned, the influence on the mechanical property and the microstructure form of the electrode lug material is avoided, and the production quality of the battery electrode plate is effectively ensured.
In addition, a non-contact type online temperature measuring sensor 5 is arranged outside the partitioned independent temperature control heating roller 2 and is used for online measuring the heating temperature of the battery pole piece 9 at different positions along the transverse direction and performing online real-time measurement and monitoring on the heated battery pole piece 9. Optionally, the non-contact online temperature measurement sensor 5 is a non-contact sensor based on an infrared temperature measurement principle or other temperature measurement principles. In addition, the non-contact online temperature measuring sensor 5 can be connected with the temperature control heating unit of the partitioned independent temperature control heating roller 2 through the controller to form a closed-loop control system, so that the heating temperature of the battery pole piece 9 at different transverse positions can be fed back and adjusted in real time.
And the active traction steel roller 3 can be used for drawing and stretching the battery pole piece 9 passing through the roller, so that the battery pole piece 9 is kept in a tensioned flat state in the roller passing process, and wrinkles are avoided. Optionally, a clamping rubber roll 6 is further arranged outside the active traction steel roll 3, when the battery pole piece 9 passes through the roll, the clamping rubber roll 6 can clamp and press the battery pole piece 9 to the surface of the active traction steel roll 3, the clamping rubber roll 6 clamps and presses the battery pole piece 9 to the active traction steel roll 3, the active traction steel roll 3 works, the battery pole piece 9 can be driven to stably draw on the active traction steel roll 3 to pass through the roll, and tension separation of the battery pole piece 9 is achieved.
Furthermore, a floating swing roller 7 is arranged between the roller outlet end side of the partitioned independent temperature control heating roller 2 and the roller inlet end side of the active traction steel roller 3, when the battery pole piece 9 passes through the roller to the position between the partitioned independent temperature control heating roller 2 and the active traction steel roller 3, the floating swing roller 7 can adjust the tension of the battery pole piece 9 through up-and-down floating, so that the battery pole piece 9 is prevented from being wrinkled or excessively stretched and broken, and the production yield of the battery pole piece 9 is effectively guaranteed. In addition, a tension detection roller 8 is further arranged on the side of the roller feeding end of the partitioned independent temperature control heating roller 2, the roller passing tension of the battery pole piece 9 can be monitored in real time, an external tension controller can be connected to realize accurate closed-loop control of the stretching tension, the stretching tension of the battery pole piece 9 is controlled under the combined action of the floating swing roller 7 and the active traction steel roller 3, and the wrinkle effect of the battery pole piece 9 after rolling is effectively removed.
In actual production, referring to fig. 2, a zebra-coated battery pole piece is the most commonly applied pole piece type in current battery production, and is also a pole piece type which is required to solve the problem of wrinkling after rolling, and the zebra-coated battery pole piece 9 axially includes a tab area 901 and a material area 902 which are distributed at intervals. The battery pole piece 9 specifically shown in fig. 2 has four tab regions 901 and three coating regions 902, wherein the battery pole piece 9 has one tab region 901 on each of the left and right ends and two tab regions 901 in the middle, and the three coating regions 902 are alternately distributed between the four tab regions 901. In the rolling production operation, two sides of the middle two polar lug areas 901 are both restrained by the material area 902, while the two polar lug areas 901 at the left and right end sides are both restrained by the material area 902 only at one side and extend naturally at the other side, so that the two polar lug areas 901 are stressed differently, and the required heating temperatures are also required to be distinguished.
Referring again to FIG. 2, in a preferred embodiment, the partitioned independently temperature-controlled heating roller 2 includes a roller body 21. The roller body 21 is provided with a plurality of heating zones 211 with independent temperature control along the axial direction, and two adjacent heating zones 211 are separated by a spacing zone 212.
The heating roller 2 with the partitioned independent temperature control specifically shown in fig. 2 can correspondingly perform the tab partitioned heating on the battery pole piece 9 with the four-way tab zone 901 and the three-way coating zone 902. Because the middle two tab regions 901 of the corresponding battery electrode sheet 9 are constrained by the same material region 902, and the material regions 902 received by the two tab regions 901 on the left and right end sides are different from the middle two tab regions 901, the middle two tab regions 901 can be heated by the same heating temperature, while the two tab regions 901 on the left and right end sides need to be heated by different heating temperatures. Thus, the roller body 21 is designed to have three heating zones 211 with independent temperature control along the axial direction, and the three heating zones include a heating zone I with a larger middle part, and a heating zone II and a heating zone III which are distributed on the left side and the right side of the heating zone I, wherein the heating zone I can correspondingly cover two middle pole ear zones 901 of the heating battery pole piece 9, the heating zone II and the heating zone III on the left side and the right side can respectively correspondingly cover two pole ear zones 901 on the left side and the right side of the heating battery pole piece 9, and in addition, four spacing zones 212 are designed; the three heating zones 211 distribute between four interval regions 212 alternately, and when carrying out the subregion heating to the utmost point ear district of battery sheet 9, the middle twice utmost point ear district 901 of battery sheet 9 is corresponding to and is carried out independent temperature control heating by the heating zone I in the middle of the subregion independent temperature control warming mill 2, the two twice utmost point ear districts 901 of both sides are right and left correspond and are carried out independent temperature control heating respectively by the heating zone II and the heating zone III of both sides, thereby realize that the multichannel utmost point ear district of battery sheet 9 carries out the subregion heating, thereby reduce the condition that the fold appears in the roll-in production operation in the battery sheet 9 in multichannel utmost point ear district, improve the production yield of battery sheet 9.
The roller body 21 is a hollow steel roller, the heating element 22 is arranged in the roller body 21 and corresponding to the heating area 211, and the heating element 22 can heat the roller surface of the heating area 211 of the roller body 21, so that the roller surface of the heating area 211 is heated and the battery pole piece 9 passing through the roller is directly heated by heat transfer or heat radiation. The heating element 22 comprises a helical heating wire or electromagnetic induction coil connected to a power source by an electrical circuit.
In an alternative embodiment, a plurality of sections of mutually independent spiral heating wires are axially distributed in the roller body 21 of the partitioned independent temperature control heating roller 2, the shape of the spiral heating wires is matched with the hollow interior of the roller body 21, and the spiral heating wires are in contact with the roller body 21; the part of each independent helical heating wire corresponding to the roller body 21 is a heating zone 211, and each independent helical heating wire is respectively connected with a power supply through an independent electric circuit. When the spiral heating wire is energized, the spiral heating wire can self-heat, and heat the roll surface of the corresponding heating zone 211 through heat conduction.
In addition, the spiral heating wire can be replaced by a straight section type heating rod or heating wire which is uniformly laid along the circumferential inner wall of the roller body 21 and is in direct contact with the inner wall of the roller body 21.
In another optional embodiment, a plurality of sections of mutually independent electromagnetic induction coils are axially distributed inside or outside the roller body 21 of the partitioned independent temperature control heating roller 2, and the electromagnetic induction coils and the roller body 21 are arranged in a non-contact manner; the part of each independent electromagnetic induction coil corresponding to the roller body 21 is a heating zone 211, and each independent electromagnetic induction coil is respectively connected with a power supply through an independent electric circuit. When the electromagnetic induction coil is electrified, the electromagnetic induction coil forms vortex current in the roller body through a magnetic field, the vortex flows in the microstructure of the roller body of the heating area 211, electrons in the roller body material corresponding to the heating area 211 are driven to do violent irregular motion, and the temperature of the roller surface corresponding to the heating area 211 is rapidly increased.
In addition, shaft heads 213 are disposed at two ends of the roller body 21 of the partitioned independent temperature control heating roller 2, and a channel capable of accommodating the leading-out of an internal electric circuit is disposed on the shaft heads 213. The electric lines externally connected with the spiral electric heating wires or the electromagnetic induction coils in the heating zones 211 with independent temperature control are led out from the channels on the shaft heads 213 and then are communicated with a power supply.
Optionally, an insulating material is filled between two adjacent heating zones 211, and a portion of the insulating material filled in the heating zones and corresponding to the roller body is the spacer 212. The spacer 212 electrically isolates the adjacent two heating zones 211 and prevents a temperature cross between the adjacent two heating zones 211, forming a temperature difference zone between the heating zones 211.
In addition, in the actual production of the device, because both sides of the base material of the battery pole piece 2 shown in fig. 2 are coated, the pole lug area without the coating cannot be directly attached to the roll surface of the roll body 21 of the partitioned independent temperature control heating roll 2, the theoretical gap is 60-90 μm according to the actual coating thickness of the pole piece, and the heat conduction adhesive paper with the corresponding thickness can be attached to the pole lug passing area on the surface of the roll body 21 in the specific implementation process so as to realize the rapid heat conduction between the roll surface of the roll body 21 and the pole lug, thereby further improving the pole lug heating efficiency.
Further, the plurality of heating areas 211 with independent temperature control are respectively provided with the roller heating temperature measuring sensors 23 which are independent of each other, and optionally, the roller heating temperature measuring sensors 23 include a thermocouple, a thermal resistor or a thermistor for contact temperature measurement, or an infrared thermometer for non-contact temperature measurement. The roller heating temperature measuring sensor 23 arranged on each heating area 211 can measure the temperature of the surface of the corresponding heating area 211 roller in real time. And, the roll body heating temperature measurement sensor 23 can form closed-loop connection with the heating element 22 through the controller, and realize the heating temperature closed-loop control of the roll surface of the heating zone 22, and then realize the closed-loop control of the heating temperature of the battery pole piece lug, and the heating temperature of the battery pole piece lug is controlled in real time, so that the overhigh or overlow heating temperature is avoided, and the production yield of the battery pole piece 9 is effectively improved.
In another preferred embodiment, an adjustable partition cooling air knife 4 is further disposed outside the partition independent temperature control heating roller 2, and when the heating area 211 of the partition independent temperature control heating roller 2 needs to be cooled, the adjustable partition cooling air knife 4 can directionally and adjustably cool the heating area 211 of the partition independent temperature control heating roller 2 in a partition air cooling manner.
Referring to fig. 3, the adjustable zone cooling air knife 4 may alternatively comprise a lockable rotating rod 41 and a plurality of independent air knife elements 42. The air knife elements 42 which are independent from each other are arranged on the lockable rotating rod 41 in an axial direction, and the air knife elements 42 and the heating zones 211 of the partitioned independent temperature control heating roller 2 are respectively in one-to-one correspondence and can blow air towards the corresponding heating zones 211. The lockable rotating rod 41 can rotate under the driving of external force, and can drive the air knife element 42 arranged thereon to rotate by a corresponding angle during rotation, so as to adjust the blowing direction of the air knife element 42. In addition, locking members 43 are disposed at both ends of the lockable rotary rod 41, so as to lock both ends of the lockable rotary rod 41, so that the lockable rotary rod 41 after the rotation angle adjustment is kept relatively fixed, thereby ensuring stable blowing cooling of the heating zone 211 by the air knife element 42 on the lockable rotary rod 41.
Referring again to fig. 3, in an alternative embodiment, a compressed air quick connector 421 and an air knife nozzle 422 communicated with the compressed air quick connector 421 are disposed on the air knife member 42. When the air-jet type air-jet device works, the compressed air quick connector 421 is externally connected with a compressed air source and blows the introduced compressed air out of the air knife nozzle 422. And the air knife nozzles 422 of the air knife elements 42 which are independent from each other are respectively in one-to-one correspondence with the heating zones 211 of the heating roller 2 which independently controls the temperature in the subareas, so that the air blowing and cooling of the heating zones 211 are realized. In addition, a wind pressure adjusting member 423 is provided in the air knife member 42, and can adjust the wind pressure of the outlet air from the air knife nozzle 422.
The above embodiments are merely preferred embodiments of the present invention, and only lie in further detailed description of the technical solutions of the present invention, but the protection scope and the implementation manner of the present invention are not limited thereto, and any changes, combinations, deletions, replacements, or modifications that do not depart from the spirit and principles of the present invention will be included in the protection scope of the present invention.
Claims (10)
1. A battery pole piece lug zone heating stretching device is characterized by sequentially comprising a zone independent temperature control heating roller and an active traction steel roller along the advancing direction of a battery pole piece; the partitioned independent temperature control heating roller can perform partitioned temperature control heating on the battery pole piece; the active traction steel roller can perform traction and stretching on the battery pole piece;
the partitioned independent temperature control heating roller comprises a roller body; the roller body is provided with a plurality of heating zones with independent temperature control along the axial direction, and two adjacent heating zones are separated by a spacer;
the outside of the partitioned independent temperature control heating roller is also provided with an adjustable partitioned cooling air knife which is used for directionally and adjustably cooling the partitioned independent temperature control heating roller in a partitioned air cooling mode.
2. The device for heating and stretching the battery pole piece tab in a subarea manner according to claim 1, wherein a plurality of sections of mutually independent spiral heating wires are axially distributed inside a roller body of the subarea independent temperature control heating roller, and the spiral heating wires are in contact with the roller body; the part of the roller body corresponding to each independent spiral electric heating wire is a heating zone.
3. The device for heating and stretching the battery pole piece lug in a subarea manner according to claim 1, wherein a plurality of sections of mutually independent electromagnetic induction coils are axially distributed inside or outside a roller body of the subarea independent temperature control heating roller, and the electromagnetic induction coils and the roller body are arranged in a non-contact manner; the part of the roller body corresponding to each independent electromagnetic induction coil is a heating area.
4. The device for heating and stretching the battery pole piece tab in the subarea according to claim 2 or 3, wherein shaft heads are arranged at two ends of a roller body of the subarea independent temperature control heating roller, and a channel capable of accommodating the leading-out of an internal electric circuit is formed in each shaft head.
5. The device for heating and stretching the battery pole piece tab in a subarea manner according to claim 1, wherein a heat insulating material is filled in a roller body of the subarea independent temperature control heating roller and at a position corresponding to a position between two adjacent heating areas; the part of the roller body filled with the heat insulation materials is a spacer area.
6. The device for heating and stretching the battery pole piece tab in a subarea manner according to claim 1, wherein each section of the heating zone with independent temperature control is provided with a roller heating temperature measuring sensor which is independent of each other.
7. The device for heating and stretching the battery pole piece and the pole lug in the subarea manner according to claim 1, wherein a non-contact online temperature measuring sensor is further arranged outside the subarea independent temperature control heating roller and used for online measuring the heating temperature of the battery pole piece at different positions in the transverse direction.
8. The device of claim 1, wherein the adjustable zone cooling air knife comprises a lockable rotating rod and a plurality of independent air knife elements; the plurality of mutually independent air knife elements are arranged on the lockable rotating rod along the axial direction;
the air knife element is provided with a compressed air quick connector and an air knife nozzle communicated with the compressed air quick connector; the air knife element is also provided with a wind pressure regulating element; and the air knife nozzles of the air knife elements which are independent from each other are respectively in one-to-one correspondence with the heating zones of the partitioned independent temperature control heating roller.
9. The device for heating and stretching the battery pole piece and the pole lug in a subarea manner according to claim 1, wherein a clamping rubber roller is further arranged outside the active traction steel roller.
10. The device for heating and stretching the battery pole piece tab in the subarea according to claim 1, wherein a floating swing roller is arranged between the roller outlet end side of the subarea independent temperature control heating roller and the roller inlet end side of the active traction steel roller; and a tension detection roller is further arranged on the side of the roller feeding end of the partitioned independent temperature control heating roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022903779.1U CN213959101U (en) | 2020-12-04 | 2020-12-04 | Battery pole piece lug subregion heating stretching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022903779.1U CN213959101U (en) | 2020-12-04 | 2020-12-04 | Battery pole piece lug subregion heating stretching device |
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| Publication Number | Publication Date |
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| CN213959101U true CN213959101U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022903779.1U Active CN213959101U (en) | 2020-12-04 | 2020-12-04 | Battery pole piece lug subregion heating stretching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665181A (en) * | 2021-08-19 | 2021-11-19 | 浙江森然工贸有限公司 | Production process and processing equipment of degradable environment-friendly anti-tearing corrugated board |
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2020
- 2020-12-04 CN CN202022903779.1U patent/CN213959101U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665181A (en) * | 2021-08-19 | 2021-11-19 | 浙江森然工贸有限公司 | Production process and processing equipment of degradable environment-friendly anti-tearing corrugated board |
| CN113665181B (en) * | 2021-08-19 | 2024-05-17 | 浙江森然工贸有限公司 | Production process and processing equipment of degradable environment-friendly anti-tearing corrugated board |
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