CN211660337U - Surface spraying equipment for lithium storage battery pole plate - Google Patents
Surface spraying equipment for lithium storage battery pole plate Download PDFInfo
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- CN211660337U CN211660337U CN201921884745.3U CN201921884745U CN211660337U CN 211660337 U CN211660337 U CN 211660337U CN 201921884745 U CN201921884745 U CN 201921884745U CN 211660337 U CN211660337 U CN 211660337U
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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
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a lithium accumulator plate surface spraying device, which comprises a working bin; the receiving platform is arranged in the working bin; the foil unwinding mechanism comprises unwinding rollers and winding rollers which are positioned on two sides of the receiving platform, and one end of each winding roller is connected with a driving motor; the slurry storage mechanism is arranged outside the working bin and comprises a cache bin and a storage bin which are connected with each other; the spraying mechanism comprises an injector connected with the storage bin, an injection pump connected with the injector, and a high-voltage power supply, wherein the positive electrode and the negative electrode of the high-voltage power supply are respectively connected with the injector and the receiving platform, the injector is arranged in the working bin and positioned above the receiving platform, and the spraying mechanism is modified by an electrostatic spinning principle, so that an electrolyte layer formed by spraying has high porosity, a porous structure is formed, and further the high-power charging and discharging performance is good.
Description
Technical Field
The utility model belongs to the technical field of the technique of lithium ion battery production and specifically relates to a lithium accumulator plate surface spraying equipment is related to.
Background
In the production process of the solid metal lithium battery, the electrolyte is coated on the surface of the battery plate in a spraying mode. With the development of the technology, the electrolyte spraying on the surface of the battery plate is replaced by spraying equipment from a manual spraying mode, and further the production efficiency is improved. The spray head adopted in the existing spraying equipment is generally an atomizing spray head, the electrolyte coated by the atomizing spray head has the characteristics of higher density and smaller porosity, the electrode prepared by the spraying mode in the low-rate charging and discharging environment has better performance, and the performance shown in the high-rate charging and discharging environment is relatively poorer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a lithium accumulator plate surface coating equipment can spray the great solid-state electrolyte layer of porosity, is applicable to the application under high rate charge-discharge environment.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a lithium battery plate surface coating apparatus comprising:
a working bin;
the receiving platform is arranged in the working bin;
the foil unwinding mechanism comprises unwinding rollers and winding rollers which are positioned on two sides of the receiving platform, and one end of each winding roller is connected with a driving motor;
the slurry storage mechanism is arranged outside the working bin and comprises a cache bin and a storage bin which are connected with each other; and
the spraying mechanism comprises an injector connected with the storage bin, an injection pump connected with the injector, and a high-voltage power supply, wherein the positive electrode and the negative electrode of the high-voltage power supply are respectively connected with the injector and the receiving platform, and the injector is arranged in the working bin and positioned above the receiving platform.
By adopting the technical scheme, the foil to be sprayed is wound at the unwinding roller of the foil unwinding mechanism in advance, one side of the foil is connected with the winding roller when unwinding, the driving motor drives the winding roller to rotate, so that the foil is gradually conveyed to the winding roller from one side of the unwinding roller, the foil passes through the receiving platform during conveying, the spraying mechanism sprays slurry onto the receiving platform, and further the foil is sprayed, the spraying mechanism adopts the principle of electrostatic spinning, the positive electrode and the negative electrode of a high-voltage power supply are respectively connected with the injector and the receiving platform, the slurry is conveyed into the injector from the storage bin, the slurry in the injector can be changed into a conical shape from a spherical shape under the environment of a strong electric field, and finally an electrolyte layer with a porous structure is sprayed and has better porosity, and because the porosity is larger, the concentration polarization in the electrode can be greatly reduced under the high-rate charging and discharging environment, meanwhile, more transmission channels are formed in the electrolyte layer by the porous structure, so that the transmission efficiency of back insertion and extraction of lithium ions between the positive electrode and the negative electrode is effectively improved, and the specific capacity and the specific energy of the battery are further improved.
Preferably, a first slurry pipeline is arranged between the buffer bin and the storage bin, and a first screw pump is arranged on the first slurry pipeline.
Through adopting above-mentioned technical scheme, the setting in buffer memory storehouse is used for the thick liquids to the supply effect in storing the storehouse, improves the efficiency that stores the storehouse and carry thick liquids in to the syringe, and the buffer memory storehouse utilizes first thick liquids pipeline to be connected with storing the storehouse, and first screw pump can be squeezed into the thick liquids in the buffer memory storehouse in the storehouse.
Preferably, a second slurry pipeline is arranged between the storage bin and the injector, and a second screw pump is arranged on the second slurry pipeline.
Through adopting above-mentioned technical scheme, the thick liquids in the storehouse can be in second thick liquids pipeline transport to the syringe under the effect on the second screw pump, and structural design is simple.
Preferably, a filter screen is arranged on the first slurry pipeline and/or the second slurry pipeline.
Through adopting above-mentioned technical scheme, the setting of filter screen plays the filtering action to the thick liquids transportation in-process, guarantees the fineness of thick liquids, satisfies the coating requirement.
Preferably, the working chamber is provided with at least one first transition chamber.
Through adopting above-mentioned technical scheme, some mechanical equipment of can keeping in setting up of first transition storehouse are convenient for damage or the change when maintaining as the equipment in the working bin.
Preferably, a second transition bin is further arranged on the working bin, the volume of the second transition bin is smaller than that of the first transition bin, and the arrangement position of the second transition bin is higher than that of the first transition bin.
Through adopting above-mentioned technical scheme, the setting in second transition storehouse is mainly used in daily work in-process, and the transition is deposited to the foil of being convenient for wait to spray and the pole piece after the spraying, and the position that will highly be higher than first transition storehouse with second transition storehouse setting simultaneously reduces whole spraying equipment's area.
Preferably, a heating device is arranged below the receiving platform.
By adopting the technical scheme, the heating device can heat the receiving platform, so that the slurry sprayed on the foil can be dried, the later drying time after spraying is shortened, and the pre-drying effect is achieved.
Preferably, the heating device comprises a plurality of resistance heating plates which are connected in series and attached to the lower end face of the receiving platform.
Through adopting above-mentioned technical scheme, resistance heating board establishes ties each other and forms a heating surface, improves efficiency and the degree of consistency to receiving platform heating.
Preferably, the device also comprises an organic matter filtering device and a purification and recovery device which are connected, wherein the organic matter filtering device is connected with the working bin, the purification and recovery device is connected with the working bin through a circulating pipeline, and an air suction pump is arranged on the circulating pipeline.
By adopting the technical scheme, part of slurry can volatilize in the spraying process, and if the volatilized solvent is not treated, the humidity in the working bin is increased, so that the spraying is not facilitated; and be provided with organic matter filter equipment and purify recovery unit and can adsorb and filter the solvent that volatilizees, reduce the humidity in the working bin, improve the spraying effect. Volatile thick liquids can filter in entering into organic matter filter equipment at first under the effect of air pump, and organic matter filter equipment adopts active carbon filter equipment, and absorption solid organic particle that can be better enters into through filterable material and purifies recovery unit, purifies recovery unit and is heat exchanger, and mainly used rectification filters, and the gaseous circulation pipeline that passes through after the rectification filters is beaten back again and is entered into the working bin for the working bin keeps pressure invariable.
Preferably, stirring devices are arranged in the buffer bin and the storage bin.
Through adopting above-mentioned technical scheme, the buffer memory storehouse utilizes agitating unit to carry out the simple stirring with the thick liquids of storing in the storehouse, improves the mixed effect of thick liquids.
To sum up, the utility model discloses a beneficial technological effect does:
1. the spraying mechanism is modified by the electrostatic spinning principle, so that the electrolyte layer formed by spraying has high porosity and a porous structure, and further has good performance in high-rate charge and discharge;
2. the switching use can be realized by arranging at least one slurry storage mechanism, so that when one slurry storage mechanism is damaged or maintained, the other slurry storage mechanism is started, and the working efficiency is improved; meanwhile, when a plurality of slurry storage mechanisms are arranged, spraying of a multilayer structure can be realized, and spraying requirements of different battery performances can be met;
3. continuous spraying work is realized through the foil unwinding mechanism, the driving motor can be selected or the transmission speed of the foil on the receiving platform can be controlled, the spraying precision is improved, and meanwhile, spraying and drying are carried out simultaneously, so that the efficiency of the whole battery production line is improved;
4. through being provided with organic thing filter equipment and purifying recovery unit and controlling the humidity in the working bin, reduce because the humidity is too high and influence the spraying quality on the foil, can also reduce the effect of heating stoving when humidity is too big simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of a lithium storage battery plate surface spraying device;
FIG. 2 is a schematic structural view of a spray mechanism;
fig. 3 is a schematic diagram of one of the electrode forms after spraying.
In the figure, 1, a working chamber; 2. a receiving platform; 21. a support platform; 31. unwinding rollers; 32. a wind-up roll; 4. a support; 5. a heating device; 6. a spraying mechanism; 61. an injector; 611. an injection cavity; 612. a push rod; 613. an injection head; 62. a high voltage power supply; 63. an injection pump; 71. a cache bin; 72. a storage bin; 73. a stirring device; 74. a first slurry conduit; 75. a first screw pump; 76. a filter screen; 77. a second slurry conduit; 78. a second screw pump; 81. a first transition bin; 82. a second transition bin; 91. an organic matter filtering device; 92. a purification and recovery device; 93. an air pump; 94. a circulation pipe; 10. a foil material; 20. a positive electrode coating layer; 30. an electrolyte layer; 40. and (4) a lithium salt layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 shows a structure of a lithium storage battery electrode plate surface spraying device, which is suitable for spraying a battery anode electrode plate and a battery cathode electrode plate, and comprises a working bin 1, a receiving platform 2 installed in the working bin 1, and a foil unwinding mechanism of a foil 10. Receiving platform 2's below is provided with supporting platform 21, and supporting platform 21 steps up receiving platform 2, and 10 foil unwinding mechanism of foil is including unreeling 31 and wind-up roll 32, unreels 31 and is located receiving platform 2's both sides respectively with wind-up roll 32, and specific unreeling 31 is connected in supporting platform 21's both sides with wind-up roll 32.
Referring to fig. 1 and 2 together, the spraying apparatus further includes a spraying mechanism 6, and the spraying mechanism 6 includes an injector 61, an injection pump 63, and a high voltage power supply 62. The injector 61 has an injection cavity 611 for containing the spraying slurry, a push rod 612 is disposed in the injection cavity 611, one end of the push rod 612 extends from the injection cavity 611 to be connected to the injection pump 63, and the other end of the push rod 612 can act on the slurry in the injection cavity 611 under the driving of the injection pump 63, so that the slurry is sprayed out of the injector 61.
The injector 61 further includes an injection head 613, wherein the positive electrode of the high voltage power source 62 is connected to the injection head 613, the negative electrode is connected to the receiving platform 2, and an electric field is formed between the injection head 613 and the receiving platform 2.
The support platform 21 is further provided with a support 4, the injector 61 is mounted on the support 4 and can be adjusted in the horizontal or vertical direction on the support 4, specifically, a horizontal linear guide rail and a vertical linear guide rail are mounted on the support 4, the vertical linear guide rail is mounted on the horizontal linear guide rail, and the injector 61 is mounted on the vertical linear guide rail.
The spraying equipment further comprises a heating device 5 connected below the receiving platform 2, the heating device 5 comprises a plurality of resistance heating plates which are connected in series and attached to the lower end face of the receiving platform 2, and the lengths of the plurality of resistance heating plates after being mutually tiled are the same as the length of the receiving platform 2.
The spraying equipment further comprises a slurry storage mechanism, the slurry storage mechanism in the embodiment is provided with two sets, each set is connected with the spraying mechanism 6, each set of slurry storage mechanism comprises a buffer bin 71 and a storage bin 72, the buffer bin 71 is connected with the storage bin 72 through a first slurry pipeline 74, and the storage bin 72 is connected with an injection cavity 611 of the injector 61 through a second slurry channel. The first slurry pipeline 74 is provided with a first screw pump 75, the second slurry pipeline 77 is provided with a second screw pump 78, and the first screw pump 75 and the second screw pump 78 are used as power sources for conveying slurry. A filter screen 76 is arranged on the first slurry pipeline 74 and/or the second slurry pipeline 77, and the filter screen 76 has different meshes according to different slurries.
All be provided with agitating unit 73 in buffer storehouse 71 and the storage storehouse 72, agitating unit 73 specifically includes stirring thick liquid and drive stirring thick liquid pivoted agitator motor, and agitating unit 73's setting improves the mixing quality of thick liquids.
Still be connected with organic matter filter 91 on the working bin 1, organic matter filter 91 is solid adsorption filter, and organic matter filter 91 is active carbon adsorption filter in this embodiment. The organic substance filtering device 91 is further connected to a purification and recovery device 92, and the purification and recovery device 92 is a heat exchanger for condensing and recovering the volatilized gas. The purification and recovery device 92 is connected with the working bin 1 through a circulation pipeline 94, an air pump 93 is arranged on the circulation pipeline 94, the air pump 93 provides a power source for bringing the solvent volatilized in the working bin 1 into the organic matter filtering device 91 and bringing the purified gas back into the working bin 1, so that the air pressure in the working bin 1 is kept stable.
Still be connected with first transition storehouse 81 and second transition storehouse 82 on the working bin 1, first transition storehouse 81 is provided with two, is located the both sides of working bin 1 respectively, and the volume of second transition storehouse 82 will be less than the volume of first transition storehouse 81 and set up the position higher than the position of first transition storehouse 81.
When the spraying device works, the foil 10 is arranged on the unwinding roller 31 in advance, and one side of the foil 10 bypasses the receiving platform 2 and is arranged at the winding roller 32. After the sprayed slurry is proportioned, the slurry is poured into any buffer bin, the stirring device 73 is started to stir the slurry, and the stirred slurry is conveyed to the storage bin 72 to be ready. During spraying, the driving motor drives the foil 10 to be rolled, the injection pump 63 works to drive the push rod 612 to compress the slurry in the injection cavity 611, the slurry is sprayed out of the conical strips under the action of the strong electric field, and the coating is gradually finished on the surface along with the transmission of the foil 10.
Referring to fig. 3, one of the electrode plate structures coated by the spraying device is shown, and sequentially comprises a foil 10, an anode coating layer 20, an electrolyte layer 30 and a lithium salt layer 40 from bottom to top, wherein the anode coating layer 20 is coated on the foil 10 in advance, the coated foil 10 is unreeled and sprayed, electrolyte slurry and lithium battery slurry are respectively filled in two buffer bins 71, two injectors 61 are horizontally spaced at a certain distance, and the injector 61 of the electrolyte slurry is located at the upstream of the injector 61 of the lithium battery slurry, so that the electrode plate spraying of a multilayer structure is realized. Of course, the number of layers and the corresponding slurry materials are selected and configured according to the characteristics of the battery, so that the use flexibility of the whole equipment is improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (10)
1. A lithium storage battery plate surface spraying device is characterized by comprising:
a working chamber (1);
the receiving platform (2), the receiving platform (2) is arranged in the working bin (1);
the foil unwinding mechanism comprises unwinding rollers (31) and winding rollers (32) which are positioned on two sides of the receiving platform (2), and one end of each winding roller (32) is connected with a driving motor;
at least one slurry storage mechanism which is arranged outside the working bin (1) and comprises a buffer bin (71) and a storage bin (72) which are connected with each other; and
the spraying mechanism (6) comprises an injector (61) connected with the storage bin (72), an injection pump (63) connected with the injector (61), and a high-voltage power supply (62) with the positive electrode and the negative electrode respectively connected with the injector (61) and the receiving platform (2), wherein the injector (61) is arranged in the working bin (1) and positioned above the receiving platform (2).
2. The lithium storage battery plate surface spraying equipment according to claim 1, characterized in that a first slurry pipeline (74) is arranged between the buffer bin (71) and the storage bin (72), and a first screw pump (75) is arranged on the first slurry pipeline (74).
3. The lithium accumulator plate surface coating equipment according to claim 2, characterized in that a second slurry pipeline (77) is arranged between the storage bin (72) and the injector (61), and a second screw pump (78) is arranged on the second slurry pipeline (77).
4. The lithium accumulator plate surface coating equipment according to claim 3, characterized in that the first slurry pipeline (74) and/or the second slurry pipeline (77) is provided with a filter screen (76).
5. The lithium accumulator plate surface coating equipment according to claim 1, characterized in that the working chamber (1) is provided with at least one first transition chamber (81).
6. The lithium storage battery plate surface spraying equipment according to claim 5, characterized in that a second transition bin (82) is further arranged on the working bin (1), the volume of the second transition bin (82) is smaller than that of the first transition bin (81), and the arrangement position of the second transition bin (82) is higher than that of the first transition bin (81).
7. The lithium accumulator plate surface coating equipment according to claim 1, characterized in that a heating device (5) is arranged below the receiving platform (2).
8. The lithium accumulator plate surface coating equipment according to claim 7, characterized in that the heating device (5) comprises a plurality of resistance heating plates connected in series and attached to the lower end surface of the receiving platform (2).
9. The lithium storage battery pole plate surface spraying equipment according to claim 1, further comprising an organic matter filtering device (91) and a purification and recovery device (92) which are connected, wherein the organic matter filtering device (91) is connected with the working bin (1), the purification and recovery device (92) is connected with the working bin (1) through a circulating pipeline (94), and an air suction pump (93) is arranged on the circulating pipeline (94).
10. The lithium storage battery plate surface spraying equipment according to claim 1, characterized in that stirring devices (73) are arranged in the buffer bin (71) and the storage bin (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921884745.3U CN211660337U (en) | 2019-11-04 | 2019-11-04 | Surface spraying equipment for lithium storage battery pole plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921884745.3U CN211660337U (en) | 2019-11-04 | 2019-11-04 | Surface spraying equipment for lithium storage battery pole plate |
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| CN211660337U true CN211660337U (en) | 2020-10-13 |
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| CN201921884745.3U Active CN211660337U (en) | 2019-11-04 | 2019-11-04 | Surface spraying equipment for lithium storage battery pole plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742630A (en) * | 2020-12-23 | 2021-05-04 | 深圳市言九电子科技有限公司 | Production method and production line equipment of polymer battery |
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2019
- 2019-11-04 CN CN201921884745.3U patent/CN211660337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742630A (en) * | 2020-12-23 | 2021-05-04 | 深圳市言九电子科技有限公司 | Production method and production line equipment of polymer battery |
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