CN118491793A - Coating system and battery production system - Google Patents
Coating system and battery production system Download PDFInfo
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- CN118491793A CN118491793A CN202410680319.7A CN202410680319A CN118491793A CN 118491793 A CN118491793 A CN 118491793A CN 202410680319 A CN202410680319 A CN 202410680319A CN 118491793 A CN118491793 A CN 118491793A
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- 239000011248 coating agent Substances 0.000 title abstract description 94
- 238000000576 coating method Methods 0.000 title abstract description 94
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 76
- 238000010438 heat treatment Methods 0.000 abstract description 73
- 239000002002 slurry Substances 0.000 abstract description 72
- 238000001514 detection method Methods 0.000 abstract description 32
- 239000011888 foil Substances 0.000 abstract description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 description 12
- 238000005192 partition Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
-
- 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
- H01M4/0402—Methods of deposition of the material
- H01M4/0419—Methods of deposition of the material involving spraying
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to the technical field of lithium ion battery coating equipment, in particular to a coating system and a battery production system. The coating system provided by the invention comprises a coating die head, a detection mechanism, a temperature control mechanism and an adjusting mechanism; a die cavity is arranged in the coating die head, and a lip which is communicated with the die cavity and the outside is arranged on the coating die head; the adjusting mechanism comprises a plurality of T blocks and telescopic pieces corresponding to the T blocks, all the T blocks are distributed along the extending direction of the lip, and the telescopic pieces are connected with the corresponding T blocks and drive the T blocks to move so as to adjust the opening of the lip; the detection mechanism is used for detecting the surface density information of a coating formed after the foil is coated with the slurry; the telescopic piece drives the T block to move according to the detection information of the detection mechanism, and the temperature control mechanism adjusts the temperature of the slurry according to the detection information of the detection mechanism. The fluidity of the high-solid-content slurry is changed in a heating mode by arranging the temperature control mechanism, so that the problem that the adjusting mechanism fails can be avoided, the coating efficiency is improved on the premise of ensuring the surface density, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of lithium ion battery coating equipment, in particular to a coating system and a battery production system.
Background
The working principle of the coating technology is that the slurry is extruded and sprayed out along the lip of a coating die head under certain pressure and certain flow rate and transferred onto the foil. When the coating is carried out, the higher the content of active substances in the slurry is, the thicker the coating on the foil is, and when the thickness of the coating is fixed, the time required for entering an oven can be shortened, the length of the oven can be shortened, and the energy consumption can be reduced by increasing the solid content in the slurry.
The existing coating die head is generally provided with an adjusting component consisting of T blocks and an executing piece for adjusting the opening degree of the lip, so that the coating layer density is controlled, and the coating quality is improved. However, the high solids slurries have poor flow at normal temperature and the T-blocks and actuators are susceptible to regulatory failure due to the viscosity of the slurry, thereby affecting coating layer density consistency.
Disclosure of Invention
The invention solves the problems that: the conditioning assembly is susceptible to high solids slurry flow to facilitate conditioning failure, thereby affecting coating surface density consistency.
(II) technical scheme
In order to solve the technical problems, an embodiment of an aspect of the present invention provides a coating system, including a coating die, a detection mechanism, a temperature control mechanism, and an adjustment mechanism;
A die cavity is arranged in the coating die head, and a lip communicated with the die cavity and the outside is arranged on the coating die head;
the adjusting mechanism comprises a plurality of T blocks and telescopic pieces corresponding to the T blocks, all the T blocks are distributed along the extending direction of the lips, and the telescopic pieces are connected with the corresponding T blocks and drive the T blocks to move so as to adjust the opening of the lips;
The detection mechanism is arranged at the downstream of the coating die head and is used for detecting the surface density information of a coating formed after the foil is coated with the slurry;
the temperature control mechanism and the adjusting mechanism are electrically connected with the detecting mechanism, the telescopic piece drives the T block to move according to the detection information of the detecting mechanism, and the temperature control mechanism adjusts the temperature of the slurry according to the detection information of the detecting mechanism.
Further, the temperature control mechanism comprises a first heating structure arranged in the coating die head, and the first heating structure is used for adjusting the temperature in the die cavity.
Further, the first heating structure is an electric heating element arranged in the coating die head.
Further, the first heating structure comprises a first heat source and a first medium flow channel arranged in the coating die head;
The first heat source is communicated with the first medium flow passage and circulates heat medium into the first medium flow passage.
Further, the coating system further comprises a feed tank; the feed tank is used for caching slurry, and the feed tank is communicated with the die cavity.
Further, the temperature control mechanism comprises a second heating structure arranged at the feed tank, and the second heating structure is used for adjusting the temperature in the feed tank.
Further, the feed tank has a tank wall;
The second heating structure comprises a second heat source and an interlayer arranged at the tank wall of the feed tank, wherein the second heat source is communicated with the interlayer and circulates heat medium into the interlayer.
Further, the temperature control mechanism further comprises a third heating structure arranged between the feed tank and the coating die head, and the feed tank conveys slurry to the coating die head through the third heating structure.
Further, the third heating structure comprises a heating plate and a third heat source;
A second medium flow passage and a slurry flow passage are arranged in the heating plate, and the second medium flow passage is positioned at the side of the slurry flow passage;
the material supply tank is communicated with the die cavity through the slurry flow channel, and the third heat source is communicated with the second medium flow channel and circulates heat medium into the second medium flow channel.
In another aspect, the present invention provides a battery production system, including the coating system described in any one of the above embodiments.
The invention has the beneficial effects that:
the coating system provided by the invention comprises a coating die head, a detection mechanism, a temperature control mechanism and an adjusting mechanism; a die cavity is arranged in the coating die head, and a lip communicated with the die cavity and the outside is arranged on the coating die head; the adjusting mechanism comprises a plurality of T blocks and telescopic pieces corresponding to the T blocks, all the T blocks are distributed along the extending direction of the lips, and the telescopic pieces are connected with the corresponding T blocks and drive the T blocks to move so as to adjust the opening of the lips; the detection mechanism is arranged at the downstream of the coating die head and is used for detecting the surface density information of a coating formed after the foil is coated with the slurry; the temperature control mechanism and the adjusting mechanism are electrically connected with the detecting mechanism, the telescopic piece drives the T block to move according to the detection information of the detecting mechanism, and the temperature control mechanism adjusts the temperature of the slurry according to the detection information of the detecting mechanism.
The temperature control mechanism can be arranged on the coating die, can be arranged on the conveying path of the slurry, can also adopt any combination of the modes, adjusts the temperature of the slurry through multiple nodes, increases the fluidity of the slurry with high solid content in a heating mode, and compared with the prior art, the temperature control mechanism can not cause the condition of adjustment failure due to the viscosity problem of the slurry with high solid content, thereby improving the coating efficiency and saving the cost on the premise of ensuring the surface density.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a coating system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a coating die according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a coating die provided by an embodiment of the present invention;
FIG. 4 is a cross-sectional view of another embodiment of a coating die provided in accordance with an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a feed tank provided by an embodiment of the present invention;
fig. 6 is a cross-sectional view of a heating plate provided by an embodiment of the present invention.
Icon: 1-coating a die head; 11-upper die head; 12-lower die head; 111-a mold cavity; 112-lips; 113-a mounting cavity;
21-a first media flow path; 22-a feed tank; 221-an interlayer; 222-a separator; 23-heating plate; 231-a second media flow path; 232-slurry flow channel; 241-a first heat source; 242-a second heat source; 243-a third heat source;
31-T blocks.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, one embodiment of the present invention provides a coating system including a coating die 1, a detection mechanism, a temperature control mechanism, and an adjustment mechanism; a die cavity 111 is arranged in the coating die head 1, and a lip 112 which is communicated with the die cavity 111 and the outside is arranged on the coating die head 1; the adjusting mechanism comprises a plurality of T-shaped blocks 31 and telescopic pieces corresponding to the T-shaped blocks 31, all the T-shaped blocks 31 are distributed along the extending direction of the lip 112, and the telescopic pieces are connected with the corresponding T-shaped blocks 31 and drive the T-shaped blocks 31 to move so as to adjust the opening of the lip 112; the detection mechanism is arranged at the downstream of the coating die head 1 and is used for detecting the surface density information of a coating formed after the foil is coated with the slurry; the temperature control mechanism and the adjusting mechanism are electrically connected with the detecting mechanism, the telescopic piece drives the T block 31 to move according to the detecting information of the detecting mechanism, and the temperature control mechanism adjusts the temperature of the slurry according to the detecting information of the detecting mechanism.
The coating system provided by the embodiment comprises a coating die head 1, a detection mechanism, a temperature control mechanism and an adjusting mechanism. The coating die 1 comprises an upper die 11, a lower die 12, a gasket and other structures. The die cavity 111 is formed on the lower die 12, the upper die 11 and the lower die 12 are disposed opposite to each other, and the upper die 11 and the lower die 12 are detachably connected. When the upper die 11 and the lower die 12 are connected, the gasket is disposed between the upper die 11 and the lower die 12, the cavity 111 is closed, and the upper die 11, the lower die 12, and the gasket together define a long lip 112. The coating die head 1 is further provided with a feed inlet, one end of the feed inlet is communicated with the die cavity 111, the other end of the feed inlet is communicated with a feed tank 22 which is mentioned below, slurry in the feed tank 22 is conveyed into the die cavity 111 through the feed inlet, and then the slurry is sprayed onto the surface of the foil through the lip 112, so that a coating layer is formed on the surface of the foil. The adjusting mechanism comprises a T block 31 and a telescopic piece corresponding to the T block 31, the telescopic piece can be an air cylinder or an electric cylinder, the telescopic piece is provided with a cylinder body end and a piston end, the cylinder body end of the telescopic piece is fixedly arranged on the coating die head 1, and the piston end of the telescopic piece is connected with the T block 31. The T block 31 is arranged on the coating die head 1 in a sliding way, and when the coating die head is used, the T block 31 corresponding to the T block 31 is driven by the telescopic piece to move so as to control the amount of the T block 31 extending into the lip 112, thereby controlling the opening degree of the lip 112 and ensuring the consistency of the surface density of the coating. The detection mechanism is used for detecting the surface density information of the coating, wherein the detection mechanism can be a laser ray integrated surface density measuring instrument, an X-ray surface density measuring instrument, a beta-ray surface density measuring instrument or a Charge-Coupled Device (CCD) photoelectric technology sensor and other devices. The detection mechanism is electrically connected with the temperature control mechanism and the adjusting mechanism through a controller, detection information of the detection mechanism is fed back to the controller, the controller is a CPU (Central Processing Unit, a central processing unit) or a PCB (Printed Circuit Board, a printed circuit board), the controller controls the telescopic piece to drive the T block 31 corresponding to the telescopic piece to move according to the detection information of the detection mechanism, and the temperature control mechanism is controlled to adjust the temperature of slurry.
Specifically, in this embodiment, when the detection mechanism detects that the surface density of the coating layer does not meet the preset requirement, the expansion piece is controlled to drive the T block 31 corresponding to the expansion piece to move for adjustment; when the T block 31 is adjusted to the limit, and the detection mechanism detects that the surface density of the coating still does not meet the preset requirement, the temperature control mechanism sets the temperature of the slurry to be increased, and for the slurry with high solid content, the fluidity of the slurry can be improved when the solid content is increased at a certain temperature, so that the T block 31 can be continuously adjusted, and finally the surface density of the coating meets the preset requirement. That is, during the use, the opening of the lip 112 is adjusted by the adjusting mechanism, and when the adjusting mechanism can not adjust any more, the temperature of the slurry is adjusted by the temperature control mechanism, so that the fluidity of the slurry is increased, and the adjusting mechanism can continuously adjust the lip 112.
The coating system that this embodiment provided, control by temperature change mechanism can set up on the coating die, also can set up on the delivery path of thick liquids, also can adopt the arbitrary combination of above-mentioned mode, adjusts the temperature of thick liquids through the multinode to increase the mobility of high solid content thick liquids in the mode of rising temperature, compare in prior art, adjustment mechanism can not appear adjusting the condition of inefficacy because of high content thick liquids viscosity problem to improve coating efficiency under the prerequisite of guaranteeing the areal density, practice thrift the cost.
As shown in fig. 1 to 4, the coating system provided by the embodiment of the invention includes a first heating structure disposed in the coating die 1, and the first heating structure is used for adjusting the temperature in the die cavity 111.
Alternatively, in this embodiment, the temperature control mechanism may be a first heating structure disposed in the coating die 1, and the first heating structure may directly adjust the temperature in the die cavity 111, thereby adjusting the temperature of the slurry in the die cavity 111. By providing the first heating structure on the coating die 1, the temperature adjustment response is made more rapid.
In an alternative embodiment, the first heating structure is an electrical heater provided within the coating die 1.
In this embodiment, the first heating structure is configured as an electric heating element, and the electric heating element has advantages of rapid response, higher adjustment efficiency, and the like. As shown in fig. 4, a mounting cavity 113 is provided in the coating die 1, and an electric heating element is provided in the mounting cavity 113. The mounting cavity 113 may be formed by opening or grooving the coating die 1. The electric heating element is arranged in the coating die head 1, so that heat loss can be reduced; meanwhile, operators can be prevented from being scalded by the electric heating part, the electric heating part is also protected to a certain extent, and damage to the electric heating part due to external environmental factors is prevented. When the electric heating device is used, the controller controls the amount of current flowing through the electric heating element according to the detection information of the detection mechanism, so that the heating value of the electric heating element can be controlled to be increased or decreased.
In another alternative embodiment, as shown in fig. 3, the first heating structure includes a first heat source 241 and a first medium flow passage 21 provided in the coating die 1; the first heat source 241 communicates with the first medium flow path 21 and circulates a heat medium into the first medium flow path 21.
In the present embodiment, the first medium flow passage 21 may be formed by opening a hole in the coating die 1. When the first heating structure is the first medium flow channel 21, the coating die head 1 needs to be provided with a first heat source 241 corresponding to the first heating structure, optionally, the first heat source 241 is a mold temperature machine, a heating medium is introduced into the first medium flow channel 21 through the mold temperature machine, the temperature of the heating medium can be transferred into the die cavity 111, and the temperature of the slurry in the die cavity 111 can be adjusted by exchanging heat between the heating medium and the slurry in the die cavity 111. Correspondingly, the controller is connected with the mold Wen Jidian, and controls the flow or the temperature of the heating medium output by the mold temperature machine according to the detection information of the detection piece, so as to adjust the temperature of the slurry in the mold cavity 111. Specifically, at a constant temperature, the higher the flow rate, the better the heating effect, the lower the flow rate, and the worse the heating effect.
Alternatively, the heating medium in the die-temperature machine may be water, oil, or some inert gas, etc. in the coating die 1 provided in this embodiment.
In the above description, the cavity 111 is formed on the lower die 12, so the first heating structure is preferably disposed on the lower die 12, so that the distance between the first heating structure and the cavity 111 is closer, the loss can be reduced during the heat transfer process, and the temperature adjusting effect of the first heating structure on the slurry in the cavity 111 is improved.
The embodiment of the invention provides a coating die head 1, as shown in fig. 1 and 5, the coating system further comprises a feed tank 22; the feed tank 22 is used for buffering the slurry, and the feed tank 22 is communicated with the die cavity 111.
In this embodiment, the battery production system further includes a batching system, and the batching system is used for preparing slurry, and the slurry is conveyed into the feed tank 22 for buffering; the feed tank 22 has a slurry outlet that communicates with a feed port on the coating die 1 to deliver the slurry in the feed tank 22 into the die cavity 111.
As shown in fig. 1 and 5, the temperature control mechanism of the coating die 1 provided by the embodiment of the invention includes a second heating structure disposed at the feed tank 22, and the second heating structure is used for adjusting the temperature in the feed tank 22.
As mentioned above, the supply tank 22 is used for buffering the slurry for coating, so, in addition to the first heating structure provided on the coating die head 1, a second heating structure may be provided at the supply tank 22, and the second heating structure is used for adjusting the temperature of the slurry buffered in the supply tank 22 by heating the inside of the supply tank 22. Through setting up the second heating structure in feed tank 22 department, except that make things convenient for follow-up adjustment mechanism to adjust, can also improve the mobility of thick liquids, make things convenient for thick liquids to carry in the coating die head 1.
Specifically, the coating die 1 provided in the embodiment of the present invention, as shown in fig. 1 and 5, the feed tank 22 has a tank wall; the second heating structure includes a second heat source 242 and a barrier 221 provided at a tank wall of the supply tank 22, the second heat source 242 being in communication with the barrier 221 and circulating a heating medium into the barrier 221.
In this embodiment, the wall of the tank may be hollow to form the barrier 221, or a jacket may be welded to the outer surface or the inner surface of the wall of the tank to form the barrier 221. The barrier 221 is provided with two openings for communication with a second heat source 242. Preferably, a plurality of inclined partition plates 222 are arranged in the partition layer 221, the partition plates 222 extend along the circumferential direction of the feed tank 22, all the partition plates 222 are arranged at intervals along the axial direction of the feed tank 22, the partition plates 222 are provided with openings, the partition layers 221 are separated by the plurality of partition plates 222, so that the residence time of the heating medium in the partition layers 221 is prolonged, the heating medium can be filled in the whole partition layers 221, and the heating effect is improved. In use, the temperature in the feed tank 22 is regulated by circulating a heating medium through the second heat source 242 into the barrier 221, thereby regulating the temperature of the slurry in the feed tank 22.
Optionally, in this embodiment, the second heat source 242 is a mold temperature machine, and a heat medium is introduced into the interlayer 221 through the mold temperature machine, so that the temperature of the heat medium can be transferred into the feed tank 22, and the temperature of the slurry in the feed tank 22 is adjusted by exchanging heat between the heat medium and the slurry in the feed tank 22. Correspondingly, the controller is connected with the die Wen Jidian, and controls the flow or the temperature of the heating medium output by the temperature controller according to the detection information of the detection part, so as to adjust the temperature of the slurry in the feed tank 22. Wherein the heating medium may be provided with reference to the first heat source 241.
It will be appreciated that in this embodiment, the second heating structure may also be an electric heating element, such as a semiconductor cooling fin, disposed on the surface of the tank wall, which can also achieve the purpose of adjusting the slurry temperature in the feed tank 22 in this embodiment.
It will be appreciated that in this embodiment, the second heating structure may also be an electrical heating structure disposed in the feed tank 22, such as a ceramic heating rod, which can also achieve the purpose of adjusting the slurry temperature in the feed tank 22 in this embodiment.
As shown in fig. 1 and fig. 6, the temperature control mechanism of the coating die 1 provided by the embodiment of the invention further includes a third heating structure disposed between the feed tank 22 and the coating die 1, and the feed tank 22 conveys the slurry to the coating die 1 through the third heating structure.
The temperature control mechanism may be provided in a slurry conveyance path, and the temperature of the slurry may be adjusted in the slurry conveyance path. In this embodiment, the temperature control mechanism includes a third heating structure, and the supply tank 22 conveys the slurry into the die cavity 111 of the coating die 1 through the third heating structure, and the third heating structure can adjust the temperature of the slurry during the conveying process.
Specifically, as shown in fig. 1 and fig. 6, the third heating structure of the coating die 1 provided in the embodiment of the present invention includes a heating plate 23 and a third heat source 243; a second medium flow passage 231 and a slurry flow passage 232 are arranged in the heating plate 23, and the second medium flow passage 231 is positioned beside the slurry flow passage 232; the feed tank 22 communicates with the cavity 111 through the slurry flow path 232, and the third heat source 243 communicates with the second medium flow path 231 and circulates the heat medium into the second medium flow path 231.
In this embodiment, the third heating structure includes a cylinder; the cylinder is hollow to form a second medium flow channel 231, and a slurry flow channel 232 with a pipeline structure is arranged in the cylinder, and two ends of the slurry flow channel 232 are respectively communicated with the feed tank 22 and the coating die head 1. By the above arrangement, the second medium flow path 231 surrounds the slurry flow path 232, thereby ensuring uniformity of the slurry temperature. The third heat source 243 is also a mold temperature machine, which is communicated with the inside of the cylinder, so as to circulate the heat medium into the cylinder to heat the slurry flowing through the slurry flow channel 232, thereby improving the fluidity of the slurry and the coating quality.
It is understood that in the present embodiment, the semiconductor heating member may be provided to heat the slurry in the slurry flow channel 232, which can also achieve the purpose of adjusting the temperature of the slurry in the slurry flow channel 232 in the present embodiment.
It is to be understood that, in the present embodiment, the first heat source 241, the second heat source 242 and the third heat source 243 may be configured as a hot water tank, besides a mold temperature machine, and the purpose of circulating the heating medium in the present embodiment can be also achieved by providing a power pump.
Alternatively, in this embodiment, for the temperature adjustment of the slurry in the mold cavity 111, any one of the above first heating structure, second heating structure and third heating structure may be used, or the above first heating structure, second heating structure and third heating structure may be combined arbitrarily on the premise of meeting the use requirement.
Another embodiment of the present invention also provides a battery production system including the coating system described in any of the above embodiments.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct or indirect through an intermediate medium, or may be internal to two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1.A coating system is characterized by comprising a coating die head (1), a detection mechanism, a temperature control mechanism and an adjusting mechanism;
a die cavity (111) is arranged in the coating die head (1), and a lip (112) which is communicated with the die cavity (111) and the outside is arranged on the coating die head (1);
The adjusting mechanism comprises a plurality of T-shaped blocks (31) and telescopic pieces corresponding to the T-shaped blocks (31), all the T-shaped blocks (31) are arranged along the extending direction of the lip (112), and the telescopic pieces are connected with the corresponding T-shaped blocks (31) and drive the T-shaped blocks (31) to move so as to adjust the opening of the lip (112);
The detection mechanism is arranged at the downstream of the coating die head (1) and is used for detecting the surface density information of a coating formed after the foil is coated with the slurry;
The temperature control mechanism and the adjusting mechanism are electrically connected with the detecting mechanism, the telescopic piece drives the T block (31) to move according to the detection information of the detecting mechanism, and the temperature control mechanism adjusts the temperature of the slurry according to the detection information of the detecting mechanism.
2. Coating system according to claim 1, characterized in that the temperature control mechanism comprises a first heating structure provided in the coating die (1) for adjusting the temperature in the die cavity (111).
3. Coating system according to claim 2, characterized in that the first heating structure is an electric heating element provided in the coating die (1).
4. The coating system according to claim 2, wherein the first heating structure comprises a first heat source (241) and a first medium flow channel (21) provided within the coating die (1);
The first heat source (241) is communicated with the first medium flow channel (21) and circulates heat medium into the first medium flow channel (21).
5. The coating system according to claim 1, characterized in that the coating system further comprises a feed tank (22); the feed tank (22) is used for caching slurry, and the feed tank (22) is communicated with the die cavity (111).
6. The coating system according to claim 5, wherein the temperature control mechanism comprises a second heating structure provided at the feed tank (22) for adjusting the temperature within the feed tank (22).
7. The coating system according to claim 6, wherein the feed tank (22) has a tank wall;
The second heating structure comprises a second heat source (242) and an interlayer (221) arranged at the tank wall of the feed tank (22), wherein the second heat source (242) is communicated with the interlayer (221) and circulates heat medium into the interlayer (221).
8. The coating system according to claim 5, wherein the temperature control mechanism further comprises a third heating structure provided between the feed tank (22) and the coating die (1), through which third heating structure the feed tank (22) delivers slurry to the coating die (1).
9. The coating system according to claim 8, wherein the third heating structure comprises a heating plate (23) and a third heat source (243);
a second medium flow channel (231) and a slurry flow channel (232) are arranged in the heating disc (23), and the second medium flow channel (231) is positioned beside the slurry flow channel (232);
The feed tank (22) is communicated with the die cavity (111) through the slurry flow passage (232), and the third heat source (243) is communicated with the second medium flow passage (231) and circulates heat medium into the second medium flow passage (231).
10. A battery production system comprising a coating system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410680319.7A CN118491793A (en) | 2024-05-28 | 2024-05-28 | Coating system and battery production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410680319.7A CN118491793A (en) | 2024-05-28 | 2024-05-28 | Coating system and battery production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118491793A true CN118491793A (en) | 2024-08-16 |
Family
ID=92232896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410680319.7A Pending CN118491793A (en) | 2024-05-28 | 2024-05-28 | Coating system and battery production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118491793A (en) |
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2024
- 2024-05-28 CN CN202410680319.7A patent/CN118491793A/en active Pending
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