A casting cooling device for lithium battery diaphragm production line

Abstract

The present application discloses a casting cooling device for a lithium battery diaphragm production line, which relates to the technical field of lithium battery diaphragm production, and is mainly composed of a shell, a first production line, a second production line, a guide plate, a casting and a heat dissipation component; the shell is provided with a first production line at the upper left end and a second production line at the lower right end, as well as a first guide plate and a second guide plate; the heat dissipation component includes two symmetrically rotating heat dissipation frames, and a cavity for storing the casting is formed between them; a rotating motor drives the heat dissipation frame to rotate through a belt; the heat dissipation frame is hexagonal, and has an auxiliary shaft and a plurality of triangular heat dissipation cavities inside, and one end of the cavity is provided with equidistantly distributed heat dissipation plates to form a cooling contact surface; in addition, the heat dissipation frame is also provided with a plurality of heat dissipation holes connected to the heat dissipation cavity, and a duct passes through the shell and the auxiliary shaft to be connected to the air cooler, and a plurality of air outlet holes distributed in the same direction and at equal distances are arranged in the duct, so as to realize efficient heat dissipation and effectively improve the cooling efficiency of the lithium battery diaphragm production line.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery diaphragm production, and in particular to a casting cooling device for a lithium battery diaphragm production line. Background Art

[0002] In the production process of lithium battery separators, the cooling of the casting is a crucial link. Traditional cooling methods often use static cooling plates or natural wind cooling, which has problems such as uneven cooling of the casting, low cooling efficiency, and easy adhesion of the casting to the cooling contact surface; these problems not only affect the production efficiency and quality stability of lithium battery separators, but also increase production costs and energy consumption; specifically, traditional static cooling plates have limited cooling area and uneven distribution of cooling media, which leads to uneven temperature distribution of the casting during the cooling process, overheating or insufficient cooling in some areas, thus affecting the performance and quality of the product; in addition, due to the long-term contact between the casting and the cooling plate, it is easy to produce adhesion on the contact surface, which increases the failure rate and maintenance cost in the production process.

[0003] Publication number CN114665220B discloses a casting cooling device for a lithium battery diaphragm production line, comprising a bottom plate, a shell fixedly mounted on the top of the bottom plate, a work table fixedly mounted on the top of the shell, a stop cover fixedly mounted on the top of the work table, a rotating bracket mounted inside the shell through a bearing, and a stepper motor connected to the rotating bracket is fixedly mounted on the side of the shell. In the present invention, cold air is introduced into the interior of the cooling platform through a cold air blower, a cold air duct and a return duct, thereby achieving the cooling effect of the upper diaphragm casting. The device uses multiple low-temperature cooling platforms to contact the casting for cooling. The casting cools down steadily, which can avoid the sticking of the casting and improve the cooling quality of the casting. During actual use of the above device, the casting sheet may be in contact with the cooling platform for a long time, which may cause the casting sheet to stick to the cooling platform. Summary of the invention

[0004] The present application provides a casting cooling device for a lithium battery diaphragm production line, which solves the technical problem in the prior art that the casting may stick to the cooling platform due to long-term contact of the casting on the cooling platform. The cooling contact surface is formed by equidistantly distributing the heat dissipation plates, so that the cold air can blow evenly on the surface of the casting, ensuring the uniformity of the cooling of the casting, avoiding the problem of local overheating or insufficient cooling, and the wind strength of the cold air blowing up and down is staggered and replaced, which can make the casting move up and down between the two heat dissipation frames. The present application provides a casting sheet cooling device for a lithium battery diaphragm production line, comprising a housing, a first production line and a second production line, wherein the housing further comprises a first guide plate, a second guide plate, a casting sheet and a heat dissipation assembly; The first production line is arranged at the upper left end of the inner side of the shell; the second production line is arranged at the lower right end of the inner side of the shell; Two ends of the first guide plate are fixedly connected to the inner side of the shell and close to the lower right end of the first production line; The height of the first guide plate is one third of the height of the first production line; Two ends of the second guide plate are fixedly connected to the inner side of the shell and close to the upper left end of the second production line; The height of the second guide plate is the same as that of the first guide plate; The heat dissipation component is disposed in the housing; The heat dissipation assembly includes a heat dissipation frame, a belt and a rotating motor; There are two heat dissipation frames, which are symmetrically rotated and connected to the middle part of the inner side of the shell; The two heat dissipation frames do not contact each other, and a cavity for storing the casting sheet is formed between the two, and the height of the cavity is twice the height of the first guide plate; The outer side surface of one end of the shell is fixedly connected to the rotating motor; the output end of the rotating motor is fixedly connected to one end of the heat dissipation frame close to the lower end of the shell; One end of the heat dissipation frame close to the upper end of the shell is fixedly connected with a rotating shaft; the belt is rotatably connected to the rotating shaft and the output end of the rotating motor respectively; The heat dissipation frame also includes an auxiliary shaft, a heat dissipation plate and a conduit; The heat dissipation frame is a hexagonal structure, and the auxiliary shaft is fixedly connected to the middle part, and the auxiliary shaft is a hollow structure; A plurality of heat dissipation cavities are formed inside the heat dissipation frame around the center of the auxiliary axis, and the heat dissipation cavities are triangular structures; A plurality of heat dissipation plates are arranged at one end of the heat dissipation cavity away from the auxiliary shaft and are evenly distributed, and the plurality of evenly distributed heat dissipation plates form a cooling contact surface; The heat dissipation frame is provided with a plurality of heat dissipation holes around the center of the auxiliary axis and connected with the heat dissipation cavity; The duct is provided with a plurality of air outlet holes, which are distributed in the same direction and at equal distances from the center of the circle; One end of the conduit passes through the outer side surface of the other end of the shell and the auxiliary shaft respectively, and is fixedly connected to the inner side of one end of the shell; The other end of the conduit is connected to a cooling fan.

[0005] Preferably, a rotating motor is fixedly connected to the outer surface of the other end of the shell; the output end of the rotating motor is fixedly connected to a first gear; one end of the conduit is rotatably connected to the inner side of one end of the shell through a bearing; the other end of the conduit is fixedly connected to a second gear, which can mesh with the first gear to rotate the conduit.

[0006] Preferably, one end of the heat dissipation cavity away from the auxiliary shaft is fixedly connected with a plurality of iron plates, and the size of the iron plates is the same as that of the heat dissipation plate; one end of the heat dissipation cavity away from the auxiliary shaft is fixedly connected with a plurality of fixing rods, and the fixing rods are cylindrical in structure; each fixing rod is between two iron plates; a limiting groove is also provided at the lower end of the fixing rod, and the fixing groove is an arc-shaped structure around the center of the fixing rod; the heat dissipation plate also includes a limiting strip, a first electromagnet and an isolation plate; the heat dissipation plate is made of high temperature resistant rubber material; a through hole is provided inside the heat dissipation plate, and the limiting strip is symmetrically fixedly connected inside the through hole; the heat dissipation plate is rotatably connected to the fixing rod through the through hole; the first electromagnet is symmetrically fixedly connected to the lower end of the heat dissipation plate; the isolation plate is fixedly connected to the lower end of the heat dissipation plate, and the isolation plate is between the two first electromagnets.

[0007] Preferably, in order to further prevent the casting from sticking when it contacts the cooling contact surface, the heat sink and the fixing rod are further improved; the heat sink also includes a second electromagnet; the fixing rod is made of rubber; the second electromagnet is symmetrically fixedly connected in the middle of the heat sink and close to the through hole, and the isolation plate is made of magnetic shielding material.

[0008] One or more technical solutions provided in this application have at least the following technical effects or advantages: The heat dissipation plates are evenly distributed to form a cooling contact surface, so that the cold air can blow evenly on the surface of the casting, ensuring the uniformity of the cooling of the casting and avoiding local overheating or insufficient cooling. The wind strength of the cold air blowing up and down is staggered and replaced, which can achieve the technical effect of moving the casting up and down between the two heat dissipation frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the structure of a casting cooling device for a lithium battery separator production line; Figure 2 A half-section structural diagram of a casting cooling device for a lithium battery separator production line; Figure 3 A half-section structural diagram of a heat dissipation frame of a casting cooling device for a lithium battery separator production line; Figure 4 A duct structure diagram of a casting cooling device for a lithium battery separator production line; Figure 5 A structural schematic diagram of a second embodiment of a casting cooling device for a lithium battery separator production line; Figure 6 A schematic diagram of the first gear structure of a casting cooling device for a lithium battery separator production line in Example 2; Figure 7A duct structure diagram of a casting cooling device embodiment 2 for a lithium battery separator production line; Figure 8 Diagram of the state of a diaphragm of a casting cooling device for a lithium battery diaphragm production line in Example 2; Fig. 9 An iron plate structure diagram of Example 3 of a casting cooling device for a lithium battery separator production line; Fig.10 A heat sink structure diagram of a casting cooling device for a lithium battery separator production line in Example 3; Fig.11 A structural diagram of a fixed rod of a casting cooling device for a lithium battery diaphragm production line in Example 3; Fig.12 An enlarged view of the fixing rod structure of Example 3 of a casting cooling device for a lithium battery diaphragm production line; Fig.13 A second electromagnet structure diagram of Example 4 of a casting cooling device for a lithium battery separator production line.

[0010] In the figure: 100, shell, 200, heat dissipation component, 110, first production line, 120, second production line, 130, first guide plate, 140, second guide plate, 210, heat dissipation frame, 211, heat dissipation cavity, 220, rotating shaft, 221, belt, 222, rotating motor, 212, auxiliary shaft, 213, heat dissipation hole, 230, heat dissipation plate, 240, duct, 241, air outlet, 250, rotating motor, 251, first gear, 252, second gear, 260, iron plate, 270, fixing rod, 271, limiting groove, 231, through hole, 232, limiting strip, 233, first electromagnet, 234, isolation plate, 280, second electromagnet, 300, casting. DETAILED DESCRIPTION

[0011] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0012] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0014] Embodiment 1: Figures 1 to 4 As shown, the present application is a casting sheet cooling device for a lithium battery diaphragm production line, comprising a housing 100, a first production line 110 and a second production line 120, wherein the housing 100 further comprises a first guide plate 130, a second guide plate 140, a casting sheet 300 and a heat dissipation assembly 200; The first production line 110 is disposed at the upper left end of the inner side of the housing 100; the second production line 120 is disposed at the lower right end of the inner side of the housing 100; Both ends of the first guide plate 130 are fixedly connected to the inner side of the housing 100 and close to the lower right end of the first production line 110; The height of the first guide plate 130 is one third of the height of the first production line 110; Both ends of the second guide plate 140 are fixedly connected to the inner side of the housing 100 and close to the upper left end of the second production line 120; The height of the second guide plate 140 is the same as that of the first guide plate 130; The heat dissipation assembly 200 is disposed in the housing 100; The heat dissipation assembly 200 includes a heat dissipation frame 210, a belt 221 and a rotating motor 222; There are two heat dissipation frames 210, which are symmetrically connected to the middle of the inner side of the housing 100; The two heat dissipation frames 210 do not contact each other, and a cavity for storing the casting sheet 300 is formed between the two, and the height of the cavity is twice the height of the first guide plate 130; The outer side surface of one end of the housing 100 is fixedly connected to the rotating motor 222; the output end of the rotating motor 222 is fixedly connected to one end of the heat dissipation frame 210 close to the lower end of the housing 100; One end of the heat dissipation frame 210 close to the upper end of the housing 100 is fixedly connected with a rotating shaft 220; the belt 221 is rotatably connected to the rotating shaft 220 and the output end of the rotating motor 222 respectively; The heat dissipation frame 210 further includes an auxiliary shaft 212, a heat dissipation plate 230 and a conduit 240; The heat dissipation frame 210 is a hexagonal structure, and the auxiliary shaft 212 is fixedly connected in the middle, and the auxiliary shaft 212 is a hollow structure; The heat dissipation frame 210 has a plurality of heat dissipation cavities 211 formed around the center of the auxiliary axis 212. The heat dissipation cavities 211 are triangular in structure. A plurality of heat dissipation plates 230 are disposed at one end of the heat dissipation cavity 211 away from the auxiliary shaft 212 and are evenly distributed, and the plurality of evenly distributed heat dissipation plates 230 form a cooling contact surface; The heat dissipation frame 210 is provided with a plurality of heat dissipation holes 213 around the center of the auxiliary axis 212 and connected with the heat dissipation cavity 211; The duct 240 has a plurality of air outlet holes 241 formed therein and distributed equidistantly in the same direction as the center of the circle; One end of the conduit 240 passes through the outer side surface of the other end of the housing 100 and the auxiliary shaft 212, and is fixedly connected to the inner side of one end of the housing 100; The other end of the conduit 240 is connected to a cooling fan.

[0015] Specific implementation: connect the duct 240 to the cooling fan, transport the casting 300 to the first guide plate 130 through the first production line 110, guide the casting 300 to the cooling contact surface on the heat dissipation frame 210 through the first guide plate 130, start the cooling fan, and the cold air passes through the duct 240 and respectively passes through the air outlet 241 and the heat dissipation hole 213 to enter the heat dissipation cavity 211, blow up the casting 300, and the wind strength of the cold air blowing up and down is staggered to ensure that the contact time between the casting 300 and the cooling contact surface is not too long; after the cooling of the casting 300 is completed, start the rotating motor 222 to drive the heat dissipation frame 210 to rotate (the function is to make the next casting 300 on the heat dissipation frame 210 a new cooling contact surface, so as to prevent the same cooling contact surface from being used for a long time, resulting in overheating of the cooling contact surface and adhesion of the casting 300), so that the casting 300 passes through the second guide plate 140 and enters the second production line 120.

[0016] Beneficial effect: The heat dissipation plates 230 are evenly distributed to form a cooling contact surface, so that the cold air can evenly blow on the surface of the casting 300, ensuring the uniformity of the cooling of the casting 300, avoiding local overheating or insufficient cooling, and the wind strength of the cold air blowing up and down is staggered and replaced, which can make the casting 300 move up and down between the two heat dissipation frames 210; it effectively solves the technical problem that the casting 300 may stick to the cooling platform due to long-term contact with the cooling platform.

[0017] Embodiment 2: Since the cold wind may deviate when blowing the casting sheet 300 upward, the conduit 240 is further improved; like Figures 5 to 8As shown, the housing 100 further includes a rotary motor 250 and a first gear 251; The outer surface of the other end of the housing 100 is fixedly connected to a rotary motor 250; The output end of the rotary motor 250 is fixedly connected to a first gear 251; One end of the conduit 240 is rotatably connected to the inner side of one end of the housing 100 via a bearing.

[0018] One or more technical solutions provided in this application have at least the following technical effects or advantages: The other end of the conduit 240 is fixedly connected to a second gear 252, which can mesh with the first gear 251 to rotate the conduit 240. Through the rotatable conduit 240, the cold wind first blows one end of the casting 300 upward and against the cooling contact surface at the upper end, and then slowly completes the turning of the conduit 240 and blows the casting 300 completely to the cooling contact surface at the upper end, and then alternates the wind force up and down. This effectively solves the technical problem that the cold wind may deviate during the process of blowing the casting 300 upward.

[0019] Embodiment 3: In order to prevent the casting sheet 300 from shifting during the alternating cold wind force process, the heat dissipation frame 210 is improved; like Figures 9 to 12 As shown, a plurality of iron plates 260 are fixedly connected to one end of the heat dissipation cavity 211 away from the auxiliary shaft 212, and the size of the iron plates 260 is the same as that of the heat dissipation plate 230; The heat dissipation cavity 211 is fixedly connected to one end away from the auxiliary shaft 212 with a plurality of fixing rods 270 having a cylindrical structure; Each of the fixing rods 270 is between the two iron plates 260; The lower end of the fixing rod 270 is also provided with a limiting groove 271, which is an arc-shaped structure around the center of the fixing rod 270; The heat sink 230 further includes a limit bar 232 , a first electromagnet 233 and an isolation plate 234 ; The heat sink 230 is made of high temperature resistant rubber material; The heat sink 230 has a through hole 231 formed therein, and a limiting strip 232 is symmetrically fixedly connected in the through hole 231 to limit the deflection angle of the heat sink 230; The heat dissipation plate 230 is rotatably connected to the fixing rod 270 through the through hole 231; The first electromagnet 233 is symmetrically fixedly connected to the lower end of the heat dissipation plate 230; The isolation plate 234 is fixedly connected to the lower end of the heat sink 230 and is a T-shaped structure. The isolation plate 234 is between the two first electromagnets 233; The isolation plate 234 is made of a magnetic shielding material.

[0020] Specific implementation: by energizing one of the first electromagnets 233 in multiple or one heat sink 230, under the action of magnetic force, the heat sink 230 deflects around the center of the fixed rod 270 and deflects toward the adjacent iron plate 260 (the first electromagnet 233 drives the heat sink 230 to deflect), and the heat sink 230 deflects to change the direction of the cold air.

[0021] One or more technical solutions provided in this application have at least the following technical effects or advantages: Through the suction of the electromagnet, the heat sink 230 can rotate left and right on the fixed rod 270, and the direction of the cold wind can be fine-tuned left and right, which can not only prevent the casting 300 from shifting (for example, when the casting 300 shifts slightly to the left end, by changing one or more heat sinks 230 to rotate to the right, part of the upward cold wind shifts to the right, so that the casting 300 can return to the right), but also carry out targeted cooling of a certain local area while ensuring that the casting 300 does not shift (for example, in the process of producing castings 300, a part of a batch of castings 300 produced has a higher temperature than other surfaces, and the cooling time will be longer than that required for other surfaces, resulting in low cooling efficiency); it effectively solves the technical problem of the casting 300 shifting during the alternating cold wind wind force.

[0022] Embodiment 4: In order to further prevent the casting sheet 300 from sticking when in contact with the cooling contact surface, the heat sink 230 and the fixing rod 270 are further improved; like Fig.13 As shown, the heat sink 230 also includes a second electromagnet 280; The fixing rod 270 is made of rubber and has a certain elasticity; The second electromagnet 280 is symmetrically fixedly connected to the middle of the heat sink 230 and is close to the through hole 231 .

[0023] Specific implementation: When the casting 300 contacts the cooling contact surface, since the fixing rod 270 has a certain elastic force, the two second electromagnets 280 in the heat sink 230 are powered on and off alternately. During the power-on process, the heat sink 230 will slightly deviate toward the adjacent iron plate 260 and return to its original position after power failure. The alternating small left and right deviations of the heat sink 230 can produce a certain vibration, and at the same time cause the cold air to slightly deviate left and right. The small left and right deviations of the cold air will cause the local part of the casting 300 to produce a small fluctuation on the cooling contact surface, thereby further preventing the casting 300 from sticking when it contacts the cooling contact surface.

[0024] One or more technical solutions provided in this application have at least the following technical effects or advantages: By alternately turning on and off the two second electromagnets 280 in the heat sink 230, the heat sink 230 is slightly offset alternately to the left and right. The heat sink 230 can be offset alternately to the left and right, and can generate a certain vibration, thereby changing the size of the local blowing of the cold air on the casting 300 (for example: by offsetting the heat sink 230 to the left and right, the blowing direction of the cold air is changed, the original initial wind speed is 5m / s, and the left and right vibrations generated by the heat sink 230 make the local wind speed 4m / s). Different areas of the casting 300 produce slight fluctuations on the cooling contact surface, which can further prevent the casting 300 from sticking to the cooling contact surface.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casting cooling device for a lithium battery diaphragm production line, comprising a housing (100), a first production line (110) and a second production line (120), characterized in that: The housing (100) further comprises a first guide plate (130), a second guide plate (140), a casting sheet (300) and a heat dissipation assembly (200); The first production line (110) is arranged at the upper left end of the inner side of the shell (100); and the second production line (120) is arranged at the lower right end of the inner side of the shell (100); Both ends of the first guide plate (130) are fixedly connected to the inner side of the shell (100) and close to the lower right end of the first production line (110); the height of the first guide plate (130) is one third of the height of the first production line (110); Both ends of the second guide plate (140) are fixedly connected to the inner side of the shell (100) and close to the upper left end of the second production line (120); the height of the second guide plate (140) is the same as that of the first guide plate (130); The heat dissipation component (200) is arranged in the housing (100), and the heat dissipation component (200) comprises a heat dissipation frame (210), a belt (221), and a rotating motor (222); There are two heat dissipation frames (210), which are symmetrically connected to the middle of the inner side of the shell (100). The two heat dissipation frames (210) do not contact each other, and a cavity for storing the casting sheet (300) is formed between the two. The height of the cavity is twice the height of the first guide plate (130).

2. A casting cooling device for a lithium battery diaphragm production line according to claim 1, characterized in that: The rotating motor (222) is fixedly connected to the outer side surface of one end of the housing (100); the output end of the rotating motor (222) is fixedly connected to one end of the heat dissipation frame (210) close to the lower end of the housing (100); One end of the heat dissipation frame (210) close to the upper end of the housing (100) is fixedly connected to a rotating shaft (220); the belt (221) is rotationally connected to the rotating shaft (220) and the output end of the rotating motor (222) respectively.

3. A casting cooling device for a lithium battery separator production line according to claim 2, characterized in that: The heat dissipation frame (210) further includes an auxiliary shaft (212), a heat dissipation plate (230) and a conduit (240); The heat dissipation frame (210) is a hexagonal structure, and the auxiliary shaft (212) is fixedly connected in the middle, the auxiliary shaft (212) is a hollow structure, and a plurality of heat dissipation cavities (211) are opened inside the heat dissipation frame (210) around the center of the auxiliary shaft (212), and the heat dissipation cavities (211) are triangular structures.

4. A casting cooling device for a lithium battery diaphragm production line according to claim 3, characterized in that: A plurality of heat dissipation plates (230) are arranged at one end of the heat dissipation cavity (211) away from the auxiliary shaft (212) and are evenly distributed, and the plurality of evenly distributed heat dissipation plates (230) form a cooling contact surface.

5. A casting cooling device for a lithium battery diaphragm production line according to claim 4, characterized in that: The heat dissipation frame (210) is provided with a plurality of heat dissipation holes (213) around the center of the auxiliary axis (212), and the holes are connected to the heat dissipation cavity (211); The duct (240) is provided with a plurality of air outlet holes (241) which are distributed in the same direction and at equal distances from the center of the circle; one end of the duct (240) passes through the outer side surface of the other end of the shell (100) and the auxiliary shaft (212) respectively, and is fixedly connected to the inner side of one end of the shell (100); the other end of the duct (240) is connected to a cooling fan.

6. A casting cooling device for a lithium battery separator production line according to claim 5, characterized in that: A rotary motor (250) is fixedly connected to the outer surface of the other end of the housing (100); The output end of the rotary motor (250) is fixedly connected to a first gear (251); One end of the conduit (240) is rotatably connected to the inner side of one end of the housing (100) via a bearing, and the other end of the conduit (240) is fixedly connected to a second gear (252) which is capable of meshing with the first gear (251) to rotate the conduit (240).

7. A casting cooling device for a lithium battery separator production line according to claim 6, characterized in that: One end of the heat dissipation cavity (211) away from the auxiliary shaft (212) is fixedly connected to a plurality of iron plates (260), the size of which is the same as that of the heat dissipation plate (230); A plurality of fixing rods (270) are fixedly connected to one end of the heat dissipation cavity (211) away from the auxiliary shaft (212) and are of a cylindrical structure. Each fixing rod (270) is between two iron plates (260). A limiting groove (271) is also provided at the lower end of the fixing rod (270), which is an arc-shaped structure around the center of the fixing rod (270).

8. A casting cooling device for a lithium battery separator production line according to claim 7, characterized in that: The heat dissipation plate (230) further comprises a limit strip (232), a first electromagnet (233) and an isolation plate (234); The heat sink (230) is made of high temperature resistant rubber material, a through hole (231) is provided inside the heat sink (230), a limit strip (232) is symmetrically fixedly connected inside the through hole (231), and the heat sink (230) is rotatably connected to the fixing rod (270) via the through hole (231).

9. A casting cooling device for a lithium battery separator production line according to claim 8, characterized in that: The first electromagnet (233) is symmetrically fixedly connected to the lower end of the heat dissipation plate (230); The isolation plate (234) is fixedly connected to the lower end inside the heat dissipation plate (230) and is a T-shaped structure; the isolation plate (234) is between the two first electromagnets (233).

10. A casting cooling device for a lithium battery separator production line according to claim 9, characterized in that: The heat sink (230) further includes a second electromagnet (280); The fixing rod (270) is made of soft rubber material; The second electromagnet (280) is symmetrically fixedly connected in the middle of the heat sink (230) and close to the through hole (231), and the isolation plate (234) is made of a magnetic shielding material.

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