CN113639563B - Heat treatment device and method for solid electrolyte film and lithium battery cell structure - Google Patents

Heat treatment device and method for solid electrolyte film and lithium battery cell structure Download PDF

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Publication number
CN113639563B
CN113639563B CN202110713156.4A CN202110713156A CN113639563B CN 113639563 B CN113639563 B CN 113639563B CN 202110713156 A CN202110713156 A CN 202110713156A CN 113639563 B CN113639563 B CN 113639563B
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heat treatment
solid electrolyte
electrolyte film
rotating
air
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CN113639563A (en
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李桂洪
刘彦兵
何学祥
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Guangdong Jiashang New Energy Technology Co ltd
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Guangdong Jiashang New Energy Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0085—Immobilising or gelification of electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Primary Cells (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides a heat treatment device and method for a solid electrolyte film and a lithium battery core structure, and relates to the technical field of lithium batteries. The heat treatment device of the solid electrolyte film includes: the heat treatment device comprises a heat treatment shell, wherein a support base is fixedly arranged at the bottom of the heat treatment shell, and through holes are formed in the middle positions of two sides of the heat treatment shell; the winding and unwinding mechanism comprises a mounting plate fixedly mounted at two sides of one end of the top of the supporting base, a rotating roller is rotatably mounted at one end of the mounting plate close to the position of the through hole, a winding roller is rotatably mounted at one end of the mounting plate away from the position of the top of one side of the through hole, a rotating motor is fixedly mounted at one end of the mounting plate away from the winding roller, and an output shaft of the rotating motor is fixedly connected with one end of the winding roller. The heat treatment method of the solid electrolyte film and the lithium battery cell structure provided by the invention have the advantage of fully heating the solid electrolyte film.

Description

Heat treatment device and method for solid electrolyte film and lithium battery cell structure
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a heat treatment device and method for a solid electrolyte film and a lithium battery core structure.
Background
Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. At 70 s of the 20 th century, m.s. whittingham proposed and began to study lithium ion batteries. The chemical characteristics of lithium metal are very active, so that the processing, storage and use of lithium metal have very high requirements on environment. With the development of science and technology, lithium batteries have become the mainstream.
In the process of manufacturing a lithium battery, the solid electrolyte thin film needs to be treated according to actual needs. Wherein, the heat treatment technology can change the characteristics of the solid electrolyte film, so that the grain boundary impedance of the solid electrolyte film is reduced, thereby improving the conduction of conductive lithium ions; and secondly, the heat treatment technology can also improve the interface contact performance between the solid electrolyte film and the electrode, reduce the interface impedance and further improve the battery performance.
However, in the conventional method for heat-treating a solid electrolyte thin film, the solid electrolyte thin film is heated by a single heater, and the heat treatment method has a problem of insufficient heating of the solid electrolyte thin film, which affects the use of a lithium battery.
Disclosure of Invention
In order to solve the technical problems, the invention provides a heat treatment device and a heat treatment method for a solid electrolyte film and a lithium battery cell structure.
The invention provides a heat treatment device of a solid electrolyte film, which comprises: the heat treatment device comprises a heat treatment shell, wherein a support base is fixedly arranged at the bottom of the heat treatment shell, and through holes are formed in the middle positions of two sides of the heat treatment shell; the winding and unwinding mechanism comprises a mounting plate fixedly mounted at two sides of one end of the top of the supporting base, a rotating roller is rotatably mounted at one end of the mounting plate close to the position of the through hole, a winding roller is rotatably mounted at one end of the mounting plate away from the position of the top of one side of the through hole, a rotating motor is fixedly mounted at one end of the mounting plate away from the winding roller, and an output shaft of the rotating motor is fixedly connected with one end of the winding roller.
Preferably, the top central position of the heat treatment shell is fixedly provided with an air guide pipe, two side positions of one end of the heat treatment shell are fixedly provided with the same air dividing pipe, one end of the air guide pipe is fixedly connected with the top central position of the air dividing pipe, one end of the air guide pipe, which is far away from the air dividing pipe, is fixedly provided with an exhaust fan, and the inner wall of the air guide pipe is fixedly provided with a heater.
Preferably, the inner walls of two sides of the other end of the heat treatment shell are fixedly provided with supporting blocks, the circumferential outer wall of each supporting block is connected with a rotating pipe through a bearing, and the circumferential outer wall of each rotating pipe is provided with a plurality of air spraying holes distributed at equal intervals.
Preferably, the two limit rollers are rotatably arranged at the position, close to the through hole, of the inner wall of one end of the heat treatment shell.
Preferably, the inner wall of one end of the heat treatment shell is fixedly provided with two heating rods at the position between the limiting roller and the rotating tube, and the heating rods are wavy.
Preferably, the operation openings are formed in the two sides of the top of the heat treatment shell, and the top of each operation opening is hinged with a sealing plate.
Preferably, a plurality of anti-skid lugs distributed at equal intervals are fixedly arranged on the circumferential outer wall of the rotating tube.
The heat treatment method of the solid electrolyte film specifically comprises the following steps:
s1: firstly, providing a solid electrolyte film to be treated with a certain thickness, winding one end of the solid electrolyte film on a winding roller without a rotating motor, then winding the solid electrolyte film on the other winding roller from the bottom of an adjacent rotating roller, and symmetrically winding the solid electrolyte film on the other winding roller through a through hole, and simultaneously, winding the solid electrolyte film on the top and the bottom of two rotating pipes respectively;
s2: then starting a heater and an exhaust fan, and exhausting air in the heat treatment shell to the air guide pipe by the exhaust fan, and then discharging the air from the air spraying holes after passing through the air guide pipe and the rotating pipe and spraying the air to the surface of the solid electrolyte film;
s3: then starting a heating rod, and heating the solid electrolyte film again by the wavy heating rod;
s4: and finally, starting the rotating motor, and driving the heated solid electrolyte film to roll by the rotating motor, so that the later use is convenient.
The utility model provides a lithium cell structure, includes the electrolyte separation film after the heating, the one side of electrolyte separation film is provided with the negative pole piece, the another side of electrolyte separation film is provided with the positive pole piece, the one side of positive pole piece is provided with the battery adventitia.
Compared with the related art, the sheet metal part spraying system provided by the invention has the following beneficial effects:
1. when the invention is used, one end of the solid electrolyte film is wound on the winding roller without the rotating motor, then is wound on the other winding roller from the bottom of the adjacent rotating roller and then symmetrically wound on the other winding roller through the through holes, meanwhile, the solid electrolyte film is wound on the top and the bottom of the two rotating pipes respectively, the air in the heat treatment shell is pumped into the air guide pipe by the exhaust fan, is discharged from the air spraying hole after passing through the air dividing pipe and the rotating pipe and is sprayed to the surface of the solid electrolyte film, and the wavy heating rod is used for heating the solid electrolyte film again, so that the full and comprehensive heating treatment of the solid electrolyte film can be realized.
2. When the invention is used, one end of the solid electrolyte film can be wound on the winding roller without the rotating motor through the winding and unwinding mechanism, and after the heating of the solid electrolyte film is finished, the heated solid electrolyte film is driven by the rotating motor to be wound, so that the use in the later period is convenient, and the whole heating operation is very convenient.
Drawings
FIG. 1 is a schematic perspective view of a heat treatment apparatus for a solid electrolyte thin film according to the present invention;
FIG. 2 is a schematic cross-sectional front view of the heat treatment housing of FIG. 1;
FIG. 3 is a schematic view of the heating rod shown in FIG. 1;
FIG. 4 is a schematic side cross-sectional view of the heat treatment housing shown in FIG. 1;
FIG. 5 is a schematic cross-sectional view of the rotary tube shown in FIG. 1;
fig. 6 is a schematic structural diagram of a lithium battery cell structure provided by the invention.
Reference numerals in the drawings: 1. a support base; 2. a wind-up roll; 3. a mounting plate; 4. a rotating motor; 5. a through hole; 6. a sealing plate; 7. an air guide pipe; 8. a wind dividing pipe; 9. heat treating the shell; 10. a rotating roller; 11. a heating rod; 12. a rotary tube; 13. a limit roller; 14. an operation port; 15. a heater; 16. a wind spraying hole; 17. a support block; 18. an exhaust fan; 19. an anti-slip bump; 20. a battery outer membrane; 21. a negative electrode sheet; 22. an electrolyte separation film; 23. and a positive plate.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1 to 5, a heat treatment apparatus for a solid electrolyte thin film includes: the heat treatment device comprises a heat treatment shell 9, wherein a support base 1 is fixedly arranged at the bottom of the heat treatment shell 9, and through holes 5 are formed in the middle positions of two sides of the heat treatment shell 9; the winding and unwinding mechanisms comprise mounting plates 3 fixedly mounted at two sides of one end of the top of the supporting base 1, rotating rollers 10 are rotatably mounted at positions, close to the through holes 5, of one end of each mounting plate 3, winding rollers 2 are rotatably mounted at positions, far away from the top of one side of each through hole 5, of one mounting plate 3, one end, far away from each winding roller 2, of each mounting plate 3 is fixedly mounted with a rotating motor 4, and an output shaft of each rotating motor 4 is fixedly connected with one end of each winding roller 2.
It is necessary to explain that: when the device is used, the two ends of the solid electrolyte film are respectively wound on the two winding rollers 2, the solid electrolyte film is heated by the inside of the heat treatment shell 9 through the through holes 5 penetrating through the heat treatment shell 9, and finally, the heated solid electrolyte film is driven by the rotating motor 4 to be wound, so that the device is convenient for later use, and the whole heating operation is very convenient.
Referring to fig. 1-4, an air guide pipe 7 is fixedly installed at the center position of the top of a heat treatment shell 9, the same air dividing pipe 8 is fixedly installed at the two side positions of one end of the heat treatment shell 9, one end of the air guide pipe 7 is fixedly connected with the center position of the top of the air dividing pipe 8, an exhaust fan 18 is fixedly installed at one end of the air guide pipe 7 far away from the air dividing pipe 8, a heater 15 is fixedly installed on the inner wall of the air guide pipe 7, supporting blocks 17 are fixedly installed on the inner walls of the two sides of the other end of the heat treatment shell 9, a rotating pipe 12 is connected with the outer circumferential wall of the supporting blocks 17 through bearings, a plurality of air spraying holes 16 distributed at equal intervals are formed in the outer circumferential wall of the rotating pipe 12, and two limiting rollers 13 are rotatably installed at positions, close to through holes 5, of the inner wall of one end of the heat treatment shell 9.
It is necessary to explain that: the air in the heat treatment shell 9 is pumped into the air guide pipe 7 by the exhaust fan 18, is discharged from the air spraying holes 16 after passing through the air guide pipe 8 and the rotating pipe 12, and is sprayed to the surface of the solid electrolyte film, so that the full and comprehensive heat treatment of the solid electrolyte film can be realized;
it also needs to be stated that: the contact area between the solid electrolyte film and the rotary pipes 12 can be increased by bypassing the top and bottom of the two rotary pipes 12, respectively, thereby improving the heating sufficiency.
Referring to fig. 2 and 3, two heating rods 11 are fixedly installed on the inner wall of one end of the heat treatment housing 9 at a position between the limiting roller 13 and the rotating tube 12, and the heating rods 11 are waved.
It is necessary to explain that: the wavy heating rod heats the top and the bottom of the solid electrolyte film again, so that the heating area of the solid electrolyte film can be further increased, and the heating sufficiency of the solid electrolyte film is further improved.
Referring to fig. 1 and 2, the heat treatment housing 9 is provided at both sides of the top thereof with an operation port 14, and the top of the operation port 14 is hinged with a sealing plate 6.
It is necessary to explain; when a user passes the solid electrolyte film between the two limiting rollers 13 and bypasses the top and the bottom of the two rotating pipes 12 respectively, the sealing plate 6 can be directly opened, and the operation is performed from the operation port 14, so that the convenience of using the device is improved.
Referring to fig. 5, a plurality of anti-slip bumps 19 are fixedly installed on the circumferential outer wall of the rotating tube 12 at equal intervals.
It is necessary to explain that: when a user bypasses the top and the bottom of the two rotating pipes 12 with the solid electrolyte films respectively and the rotating motor 4 drives the solid electrolyte films to wind, the solid electrolyte films drive the rotating pipes 12 to rotate, so that different air spraying holes 16 on the rotating pipes 12 fully spray air to the surfaces of the solid electrolyte films, and the anti-slip convex blocks 19 can improve the friction force between the rotating pipes 12 and the solid electrolyte films, thereby improving the rotating stability.
The heat treatment method of the solid electrolyte film specifically comprises the following steps:
the first step: firstly, providing a solid electrolyte film to be treated, winding one end of the solid electrolyte film on a winding roller 2 without a rotating motor 4, then winding from the bottom of an adjacent rotating roller 10, and then symmetrically winding on the other winding roller 2 through a through hole 5, and simultaneously, winding the solid electrolyte film on the top and the bottom of two rotating pipes 12 respectively;
and a second step of: then, the heater 15 and the exhaust fan 18 are started, the exhaust fan 18 pumps the air in the heat treatment shell 9 to the air guide pipe 7, and the air is discharged from the air spraying holes 16 and sprayed to the surface of the solid electrolyte film after passing through the air distribution pipe 8 and the rotating pipe 12;
and a third step of: then, the heating rod 11 is started, and the wavy heating rod 11 heats the solid electrolyte film again;
fourth step: and finally, the rotating motor 4 is started, and the heated solid electrolyte film is driven by the rotating motor 4 to be wound, so that the later use is convenient.
Referring to fig. 6, the lithium battery cell structure of the present invention includes a heated electrolyte separation film 22, a negative electrode sheet 21 is disposed on one surface of the electrolyte separation film 22, a positive electrode sheet 23 is disposed on the other surface of the electrolyte separation film 22, and a battery outer film 20 is disposed on one surface of the positive electrode sheet 23.
The working principle of the sheet metal part spraying system provided by the invention is as follows:
when the invention is used, one end of the solid electrolyte film is wound on the winding roller 2 without the rotating motor 4, then is wound on the other winding roller 2 from the bottom of the adjacent rotating roller 10, and then passes through the through holes 5 to be symmetrically wound on the other winding roller 2, meanwhile, the solid electrolyte film is respectively wound on the top and the bottom of the two rotating pipes 12, the air in the heat treatment shell 9 is pumped into the air guide pipe 7 by the exhaust fan 18, then is discharged from the air spraying holes 16 after passing through the air distribution pipe 8 and the rotating pipes 12 and is sprayed to the surface of the solid electrolyte film, and the wavy heating rod 11 is used for heating the solid electrolyte film again, so that the full and complete heating treatment of the solid electrolyte film can be realized.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims (1)

1. A method for heat treatment of a solid electrolyte film, comprising:
the heat treatment device comprises a heat treatment shell (9), wherein a support base (1) is fixedly arranged at the bottom of the heat treatment shell (9), and through holes (5) are formed in the middle positions of two sides of the heat treatment shell (9);
the winding and unwinding mechanism comprises a mounting plate (3) fixedly mounted at two sides of one end of the top of the supporting base (1), a rotating roller (10) is rotatably mounted at one end of the mounting plate (3) close to the position of the through hole (5), a winding roller (2) is rotatably mounted at the top of one end of the mounting plate (3) far away from one side of the through hole (5), a rotating motor (4) is fixedly mounted at one end of the mounting plate (3) far away from the winding roller (2), and an output shaft of the rotating motor (4) is fixedly connected with one end of the winding roller (2);
the air guide pipe (7) is fixedly arranged at the center of the top of the heat treatment shell (9), the same air dividing pipe (8) is fixedly arranged at two sides of one end of the heat treatment shell (9), one end of the air guide pipe (7) is fixedly connected with the center of the top of the air dividing pipe (8), an exhaust fan (18) is fixedly arranged at one end, far away from the air dividing pipe (8), of the air guide pipe (7), and a heater (15) is fixedly arranged on the inner wall of the air guide pipe (7);
the inner walls of two sides of the other end of the heat treatment shell (9) are fixedly provided with supporting blocks (17), the circumferential outer wall of each supporting block (17) is connected with a rotating pipe (12) through a bearing, and the circumferential outer wall of each rotating pipe (12) is provided with a plurality of air spraying holes (16) which are distributed at equal intervals;
two limit rollers (13) are rotatably arranged on the inner wall of one end of the heat treatment shell (9) close to the through hole (5);
two heating rods (11) are fixedly arranged on the inner wall of one end of the heat treatment shell (9) and positioned between the limit roller (13) and the rotating tube (12), and the heating rods (11) are wavy;
an operation port (14) is formed in two sides of the top of the heat treatment shell (9), and a sealing plate (6) is hinged to the top of the operation port (14);
a plurality of anti-skid lugs (19) which are distributed at equal intervals are fixedly arranged on the circumferential outer wall of the rotating pipe (12);
wherein, the heat treatment method comprises the following steps:
s1: firstly, providing a solid electrolyte film to be treated with a certain thickness, winding one end of the solid electrolyte film on a winding roller (2) without a rotating motor (4), then winding the solid electrolyte film from the bottom of an adjacent rotating roller (10), and then symmetrically winding the solid electrolyte film on the other winding roller (2) through a through hole (5), and simultaneously, winding the solid electrolyte film on the top and the bottom of two rotating pipes (12) respectively;
s2: then, starting a heater (15) and an exhaust fan (18), pumping air in the heat treatment shell (9) into the air guide pipe (7) by the exhaust fan (18), and discharging the air from the air spraying hole (16) after passing through the air dividing pipe (8) and the rotating pipe (12) and spraying the air to the surface of the solid electrolyte film;
s3: then, starting the heating rod (11), and heating the solid electrolyte film again by the wavy heating rod (11);
s4: and finally, starting the rotating motor (4), and driving the heated solid electrolyte film to roll by the rotating motor (4) so as to facilitate later use.
CN202110713156.4A 2021-06-25 2021-06-25 Heat treatment device and method for solid electrolyte film and lithium battery cell structure Active CN113639563B (en)

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CN113639563B true CN113639563B (en) 2023-06-23

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Publication number Priority date Publication date Assignee Title
CN110375531A (en) * 2019-07-08 2019-10-25 佛山市实达科技有限公司 A kind of film apparatus for baking and winding battery preparation method
CN210272580U (en) * 2019-09-27 2020-04-07 江苏明冠电源科技有限公司 Winding equipment is used in production of battery separator
CN211480210U (en) * 2020-03-05 2020-09-11 旭成（福建）科技股份有限公司 Heat treatment device with preheating function for lithium battery film production
CN211350868U (en) * 2020-03-10 2020-08-25 李凯 Production device for lithium battery electrolyte
CN112332024A (en) * 2020-11-09 2021-02-05 南京恒捷达机械制造有限公司 New forms of energy lithium cell manufacturing and forming system

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