Fitting device for ion exchange membrane of flow battery

Abstract

The invention provides a flow battery ion exchange membrane laminating device. The flow battery ion exchange membrane laminating device comprises a first tension roller, a second tension roller, a laminating compression roller and a laminating platform, the surface, deviating from the laminating platform, of the electrode frame is coated with an adhesive; the laminating pressing roller is located between the first tension roller and the second tension roller, and the first tension roller and the second tension roller are located on the side, away from the laminating platform, of the laminating pressing roller; when the laminating compression roller is located at the first position, at least part of the ion exchange membrane is laminated by the laminating compression roller, is adhered to the first side edge of the electrode frame through the adhesive and is separated from the corresponding back membrane; and when the laminating compression roller moves to a second position, at least part of the ion exchange membrane is laminated by the laminating compression roller, is adhered to all side edges of the electrode frame through the adhesive and is separated from the corresponding back membrane. The problems that in the prior art, before and after the ionic membrane and the electrode frame are stacked, the ionic membrane is prone to failure and poor in durability are solved.

Description

Technical Field

[0001] The invention relates to the field of liquid flow battery production and manufacturing, and in particular to a liquid flow battery ion exchange membrane laminating device. Background Art

[0002] A flow battery is a reaction device that charges and discharges by performing redox reactions through the flow of liquids of different valence states at the positive and negative electrodes. Its main components include: bipolar plates, ion exchange membranes, carbon felt electrodes, electrode frames, end plate inlet and outlet plates, etc. During the processing and manufacturing of flow batteries, it is necessary to manually stack and press the main components together, and ensure that the materials are sealed to finally form the packaging structure of the battery. In the prior art, during the stacking process of the battery, the back film of the cut ion exchange membrane needs to be manually peeled off and attached to the electrode frame.

[0003] However, the adhesive backing of the ion exchange membrane (including the adhesive backing and the ion membrane attached together) is firmly bonded to the ion membrane, and manual peeling faces many operational inconveniences. For example, before and after the manual peeling of the ion membrane, multiple assembly processes may be required, and more materials may be contacted, and the hands will carry more stains. Directly peeling the ion membrane by hand will contaminate the surface of the ion membrane, resulting in an increased risk of failure of the ion membrane. For example, the manual peeling of the ion membrane process will cause uneven force on the surface of the ion membrane to appear wrinkled, resulting in poor durability of the wrinkled parts of the ion membrane.

[0004] It can be seen that the prior art has problems such as the ion membrane being prone to failure and poor durability before and after the stacking operation of the ion membrane and the electrode frame. Summary of the invention

[0005] The present invention provides a liquid flow battery ion exchange membrane laminating device, which solves the problems in the prior art that the ion membrane is prone to failure and poor durability before and after the stacking operation of the ion membrane and the electrode frame.

[0006] The present invention provides a flow battery ion exchange membrane laminating device, comprising a first tension roller, a second tension roller, a laminating pressure roller and a laminating platform; the surface of the laminating platform is used to carry an electrode frame, and the surface of the electrode frame away from the laminating platform is coated with an adhesive colloid; the ion exchange membrane comprises an ion membrane and a back membrane laminated together;

[0007] The first tension roller, the second tension roller and the laminating pressure roller are all located on the same side of the laminating platform and facing the electrode frame, the laminating pressure roller is located between the first tension roller and the second tension roller, and the first tension roller and the second tension roller are located on the side of the laminating pressure roller away from the laminating platform;

[0008] The laminating roller can move between a first position and a second position along the extension direction of the electrode frame;

[0009] When the laminating roller is in the first position, the ion exchange membrane is wound around and tensioned on the first tension roller and the laminating roller, and at least part of the ion exchange membrane is pressed by the laminating roller and adhered to the first side of the electrode frame through the adhesive colloid and separated from the corresponding back membrane;

[0010] When the laminating roller moves to the second position, at least part of the ion exchange membrane is pressed by the laminating roller and adhered to all sides of the electrode frame through the adhesive colloid and is separated from the corresponding back membrane.

[0011] The present invention cooperates with the first tension roller, the second tension roller and the laminating roller, so that the ion membrane of the ion exchange membrane is attached to the electrode frame while being separated from the back membrane, replacing the manufacturing process of artificial film stripping and artificial mucosa, avoiding the contamination of the ion membrane by the human operator, reducing the failure risk of the ion membrane, and, because during the laminating process (or can be understood as the process of the laminating roller moving from the first position to the second position), the ion membrane is always tensioned on the first tension roller and the laminating roller and directly pressed and attached to the electrode frame by the laminating roller, which greatly avoids the ion membrane from wrinkling during the laminating process, thereby improving the durability of the ion membrane. In addition, the present invention improves the stacking automation of the ion membrane and the electrode frame, and improves the production efficiency of the flow battery.

[0012] Furthermore, the present invention adopts a solution of bonding the back glue of the ion membrane and the adhesive colloid of the electrode frame, which has an excellent sealing effect, thereby helping to reduce or eliminate the sealing line design in traditional processes, helping to avoid the risk of sealing line failure (such as corrosion by electrolyte), and eliminating the sealing line helps to reduce the overall thickness of the battery stack and improve the overall power density of the battery stack.

[0013] Optionally, the extension directions of the first tension roller, the second tension roller and the laminating roller are perpendicular to the movement direction of the laminating roller and are located in the same plane.

[0014] Optionally, in the ion exchange membrane, at least a portion of the back membrane separated from the ion membrane is tensioned between the laminating pressure roller and the second tension roller.

[0015] Optionally, the length of the laminating roller along its own axial direction is greater than or equal to the length of the electrode frame in this direction.

[0016] Optionally, the length of the first tension roller and the second tension roller along their own axial direction is greater than or equal to the width of the ion exchange membrane.

[0017] Optionally, the flow battery ion exchange membrane laminating device further comprises an adjusting rod, and the laminating roller is mounted on the adjusting rod and can move along its own axial direction along the adjusting rod to adjust the relative position of the ion exchange membrane and the electrode frame when the ion exchange membrane is wound around the laminating roller.

[0018] The embodiment of the present invention can adjust the relative position of the ion exchange membrane and the electrode frame wound thereon by means of an axially movable laminating roller, and can further align the ion exchange membrane and the electrode frame by axially adjusting the laminating roller, thereby improving the laminating accuracy and laminating efficiency and avoiding blockage of the liquid flow channel due to misalignment of the ion membrane and the electrode frame.

[0019] Optionally, a first limit piece is provided on the adjusting rod, a second limit piece is provided on the surface of the bonding platform, the electrode frame abuts against the second limit piece, and when the bonding roller moves along the adjusting rod and abuts against the first limit piece, the ion exchange membrane wound around the bonding roller is aligned with the electrode frame.

[0020] The embodiment of the present invention further improves the alignment accuracy and alignment efficiency between the ion exchange membrane and the electrode frame through the limiting member (including the first limiting member and the second limiting member).

[0021] Optionally, the liquid flow battery ion exchange membrane bonding device also includes a negative pressure device, and a plurality of suction holes are provided on the surface of the bonding platform, and the plurality of suction holes are connected to the negative pressure device to adsorb the ion membrane attached to the side of the electrode frame onto the surface of the bonding platform.

[0022] The embodiment of the present invention can ensure that the ion membrane is always adsorbed on the bonding platform during the bonding process through the negative pressure device and the suction holes on the bonding platform, further avoiding wrinkles of the ion membrane during the bonding process and improving the durability of the ion membrane.

[0023] Optionally, the bonding colloid is a thermosensitive adhesive, and a heating tube is also provided in the bonding platform to heat the electrode frame.

[0024] Optionally, the flow battery ion exchange membrane laminating device further includes a controller, a drive motor and a position sensor;

[0025] The driving motor is connected to the laminating roller to control its movement, and the position sensor is arranged on the laminating roller to detect the real-time position of the laminating roller;

[0026] The controller is electrically connected to the driving motor and the position sensor to control the movement of the laminating roller according to the real-time position of the laminating roller sent by the position sensor.

[0027] The embodiment of the present invention electrically controls the laminating roller through a controller and a sensor, thereby further improving the automation level of the entire equipment, improving production efficiency, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the principle structure of a liquid flow battery ion exchange membrane laminating device according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of a liquid flow battery ion exchange membrane laminating device according to an embodiment of the present invention;

[0030] Figure 3 The figure is a schematic diagram of the operation flow of the ion exchange membrane bonding process of a flow battery according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1: Liquid flow battery ion exchange membrane bonding device;

[0033] 11: first tension roller; 12: second tension roller; 13: laminating pressure roller; 14: laminating platform; 141: air suction hole; 142: heating tube; 143: negative pressure interface;

[0034] 2: electrode frame;

[0035] 3: ion exchange membrane; 31: ion membrane; 32: back membrane; 33: scroll. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0037] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0040] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] The present invention provides a flow battery ion exchange membrane laminating device 1, see Figure 1 and Figure 2 , a flow battery ion exchange membrane laminating device 1, comprises a first tension roller 11, a second tension roller 12, a laminating pressure roller 13 and a laminating platform 14. The surface of the laminating platform 14 is used to carry the electrode frame 2, and the surface of the electrode frame 2 facing away from the laminating platform 14 (or can be understood as the upper surface of the laminating platform 14) is coated with an adhesive colloid. The ion exchange membrane 3 comprises an ion membrane 31 and a back film 32 that are laminated together. It can be understood by those skilled in the art that the ion membrane 31 after the back film 32 is peeled off has its own back glue, and the back glue is exposed by peeling off the back film 32 to be laminated to the electrode frame 2.

[0043] The first tension roller 11, the second tension roller 12 and the laminating pressure roller 13 are all located on the same side of the laminating platform 14 and facing the electrode frame 2. Figure 1 As shown, both are located on the upper side of the laminating platform 14, the laminating roller 13 is located between the first tension roller 11 and the second tension roller 12, and the first tension roller 11 and the second tension roller 12 are located on the side of the laminating roller 13 away from the laminating platform 14, or it can be understood that the first tension roller 11 and the second tension roller 12 are located on the upper side of the laminating roller 13. In one embodiment, the first tension roller 11 and the second tension roller 12 can be at the same height, and in other alternative embodiments, the first tension roller 11 and the second tension roller 12 can also be located at different heights, for example, the second tension roller 12 is slightly lower than the first tension roller 11.

[0044] The laminating roller 13 can move between a first position and a second position along the extension direction of the electrode frame 2. Figure 2 As shown, the laminating roller 13 can be Figure 2 Move left and right within the viewing angle to apply force to the ion exchange membrane 3 so that it adheres to the surface of the electrode frame 2.

[0045] When the laminating roller 13 is in the first position, the ion exchange membrane 3 is wound around and tensioned on the first tension roller 11 and the laminating roller 13, and at least a portion of the ion exchange membrane 31 is pressed by the laminating roller 13 and bonded to the first side edge (e.g. Figure 2 The right side shown) and separated from the corresponding backing film;

[0046] When the laminating roller 13 moves to the second position, at least a portion of the ion membrane 31 of the ion exchange membrane 3 is pressed by the laminating roller and adhered to all sides of the electrode frame 2 through the adhesive colloid and separated from the corresponding back membrane.

[0047] Among them, the extension direction of the electrode frame 2 can be understood as the long side direction of the electrode frame 2 (i.e., the length direction), or the short side direction of the electrode frame 2 (i.e., the width direction). As long as the bonding roller 13 moves from the first position to the second position, the ion membrane 31 can be bonded to all sides of the electrode frame 2, it does not deviate from the scope of the embodiments of the present application.

[0048] It can be seen that the present invention, through the mutual cooperation of the first tension roller 11, the second tension roller 12 and the laminating roller 13, makes the ion membrane 31 of the ion exchange membrane 3 be attached to the electrode frame 2 while being separated from the back film 32, replacing the manufacturing process of artificial film stripping and artificial membrane sticking, avoiding the contamination of the ion membrane by the human operator's hand, and reducing the failure risk of the ion membrane. In addition, during the laminating process (or it can be understood as the process of the laminating roller 13 moving from the first position to the second position), the ion membrane 31 is always tensioned on the first tension roller 11 and the laminating roller 13 and directly pressed and attached to the electrode frame 2 with the adhesive colloid through the laminating roller 13, which greatly avoids the ion membrane 31 from wrinkling during the laminating process, thereby improving the durability of the ion membrane 31. In addition, the present invention improves the automation of stacking the ion membrane 31 and the electrode frame 2, and improves the production efficiency of the liquid flow battery.

[0049] Furthermore, the present invention adopts a solution of bonding the back glue of the ion membrane 31 and the adhesive colloid of the electrode frame, which has an excellent sealing effect, thereby helping to reduce or eliminate the sealing line design in traditional processes, helping to avoid the risk of sealing line failure (such as corrosion by electrolyte), and eliminating the sealing line helps to reduce the overall thickness of the battery stack and improve the overall power density of the battery stack.

[0050] Among them, the adhesive colloid on the surface of the electrode frame 2 can be pre-bonded or the incoming material can carry the adhesive colloid. At least part of the ion membrane 31 of the above-mentioned ion exchange membrane 3 is pressed by the laminating roller 13 and bonded to the first side of the electrode frame through the adhesive colloid and separated from the corresponding back membrane. Those skilled in the art should understand that the bonding force between the back glue of the ion membrane 31 and the adhesive colloid is greater than its bonding force with the back membrane 32. Therefore, it can be separated from the back membrane 32 while being bonded to the adhesive colloid under the pressing action of the laminating roller 13. Furthermore, the embodiments of the present invention do not limit the types of adhesive colloid and back glue. As long as the two can perform the above-mentioned bonding and separation requirements, they do not deviate from the scope of the embodiments of the present invention. In one embodiment, the adhesive colloid is a thermosensitive adhesive. Further, if Figure 1 and Figure 2 As shown, a heating tube 142 is provided in the laminating platform 14 to heat the electrode frame 2 and activate the thermosensitive adhesive on the surface of the electrode frame 2 .

[0051] In one embodiment, if Figure 1 and Figure 2As shown, the extension direction of the first tension roller 11, the second tension roller 12 and the laminating roller 13 is perpendicular to the movement direction of the laminating roller 13 and is located in the same plane. In one embodiment, the axial direction of the laminating roller 13 is perpendicular to its movement direction, and the axial directions of the first tension roller 11 and the second tension roller 12 are consistent with the laminating roller 13, and the three are arranged in parallel.

[0052] Furthermore, in one embodiment, the ion exchange membrane 3 is unrolled from a reel 33 and sequentially wound around a first tension roller 11, a bonding roller 13, and a second tension roller 12. After one electrode frame 2 is bonded, the ion exchange membrane 3 can be moved as a whole away from the reel 33. At this time, at least a portion of the back membrane 32 separated from the ion membrane 31 in the ion exchange membrane 3 is tensioned between the bonding roller 13 and the second tension roller 12. Between the first tension roller 11 and the bonding roller 13 is an ion exchange membrane 3 that has not been bonded (the ion membrane 31 and the back membrane 32 are not separated) so that the next electrode frame 2 can be bonded.

[0053] In one embodiment, the length of the laminating roller 13 along its own axial direction is greater than or equal to the length of the electrode frame 2 in this direction. Figure 2 As shown, the length of the laminating roller 13 is greater than the width of the electrode frame 2. In a further embodiment, the length of the first tension roller 11 and the second tension roller 12 along their own axial direction is greater than or equal to the width of the ion exchange membrane 3. For example, Figure 2 As shown, the lengths of the first tension roller 11 and the second tension roller 12 are both greater than the width of the ion exchange membrane 3 .

[0054] Furthermore, in one embodiment, the flow battery ion exchange membrane laminating device 1 further comprises an adjusting rod, and the laminating roller 13 is mounted on the adjusting rod and can move along its own axial direction along the adjusting rod (such as Figure 2 The laminating roller 13 can be moved in a direction perpendicular to the paper surface to adjust the relative position of the ion exchange membrane 3 and the electrode frame 2 when the ion exchange membrane 3 is wound on the laminating roller 13. Through the above structure, the relative position of the ion exchange membrane 3 wound thereon and the electrode frame 2 can be adjusted by utilizing the axial movement of the laminating roller 13, so that the ion exchange membrane 3 and the electrode frame 2 can be aligned, thereby improving the laminating accuracy and laminating efficiency, and avoiding the blockage of the liquid flow channel due to the misalignment of the ion membrane 31 and the electrode frame 2.

[0055] Furthermore, a first stopper (not shown in the figure) is provided on the adjusting rod, a second stopper (not shown in the figure) is provided on the surface of the bonding platform 14, and the electrode frame 2 is abutted against the second stopper when placed on the bonding platform, and when the bonding roller 13 moves along the adjusting rod and abuts against the first stopper, the ion exchange membrane 3 wound on the bonding roller 13 is aligned with the electrode frame. The embodiment of the present invention further improves the alignment accuracy and efficiency of the ion exchange membrane 3 and the electrode frame 2 through the stopper (including the first stopper and the second stopper).

[0056] In one embodiment, if Figure 1 and Figure 2 As shown, the flow battery ion exchange membrane bonding device 1 also includes a negative pressure device (not shown in the figure), and a plurality of suction holes 141 are provided on the surface of the bonding platform 14, and the plurality of suction holes 141 are connected to the negative pressure device through a negative pressure interface 143, so as to adsorb the ion membrane 31 attached to the side of the electrode frame 2 to the surface of the bonding platform 14. The negative pressure device can be arranged inside the bonding platform 14, or can be an external device, and the negative pressure device is, for example, a vacuum pump.

[0057] The embodiment of the present invention can ensure that the ion membrane 31 is always adsorbed on the bonding platform 14 during the bonding process through the negative pressure device and the suction holes 141 on the bonding platform, further avoiding the ion membrane 31 from wrinkling during the bonding process and improving the durability of the ion membrane 31.

[0058] In one embodiment, the flow battery ion exchange membrane laminating device 1 further includes a controller, a drive motor, and a position sensor. The drive motor is connected to the laminating roller 13 to control its movement, the sensor is provided on the laminating roller 13 to detect the real-time position of the laminating roller 13, and the controller is electrically connected to the drive motor and the sensor to control the movement of the laminating roller 13 according to the real-time position of the laminating roller 13 sent by the sensor.

[0059] The embodiment of the present invention electrically controls the laminating pressing roller 13 through a controller and a position sensor, thereby further improving the automation level of the entire equipment, improving production efficiency, and reducing production costs.

[0060] The following is an example of the working process of the flow battery ion exchange membrane bonding device 1, see Figure 3 Combined with Figure 1 and Figure 2 understand.

[0061] The half-cut ion exchange membrane roll (the half-cut ion exchange membrane roll is the ion exchange membrane roll that has only been cut in shape, and the back membrane is not cut) is wound around the first tension roller 11, the laminating roller 13 and the second tension roller 12. The ion exchange membrane 3 is unrolled under tension, and is aligned and contacted with the hole position of the electrode frame 2 with a heat-sensitive adhesive (a kind of adhesive film that becomes sticky after being heated to the activation temperature, which is a semi-finished product after cutting) through the laminating roller 13. At this time, the electrode frame 2 has been heated on the laminating platform 14 to activate the heat-sensitive adhesive and become sticky, and the half-cut After the ion exchange membrane 3 comes into contact with the electrode frame 2, the bonding force between the ion membrane 31 and the back membrane 32 is smaller than the bonding force between the ion membrane 31 and the thermosensitive adhesive, and the bonding platform 14 provides negative pressure to adsorb the ion membrane 31 on the surface of the bonding platform 14 to ensure the flatness of the ion membrane 31. After the back membrane 32 is pulled by the second tension roller 12, it is peeled off and the bonding action of the ion membrane 31 and the electrode frame 2 is completed. Then the bonding pressure roller 13 moves in the non-bonding direction (or can be understood as moving from the first position to the second position) to complete the bonding of the entire electrode frame 2 and the ion membrane 31.

[0062] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A liquid flow battery ion exchange membrane laminating device, characterized in that: It comprises a first tension roller, a second tension roller, a laminating pressure roller and a laminating platform; the surface of the laminating platform is used to carry the electrode frame, and the surface of the electrode frame away from the laminating platform is coated with an adhesive colloid; The ion exchange membrane includes an ion membrane and a back membrane attached together; The first tension roller, the second tension roller and the laminating pressure roller are all located on the same side of the laminating platform and facing the electrode frame, the laminating pressure roller is located between the first tension roller and the second tension roller, and the first tension roller and the second tension roller are located on a side of the laminating pressure roller away from the laminating platform; The laminating roller can move between a first position and a second position along the extension direction of the electrode frame; When the laminating roller is in the first position, the ion exchange membrane is wound around and tensioned by the first tension roller and the laminating roller, and at least part of the ion exchange membrane is pressed by the laminating roller and adhered to the first side of the electrode frame through the adhesive colloid and separated from the corresponding back membrane; When the laminating roller moves to the second position, at least part of the ion exchange membrane is pressed by the laminating roller and adhered to all sides of the electrode frame through the adhesive colloid and is separated from the corresponding back membrane.

2. The ion exchange membrane laminating device for a flow battery according to claim 1, characterized in that: The extending directions of the first tension roller, the second tension roller and the laminating roller are perpendicular to the moving direction of the laminating roller and are located in the same plane.

3. The liquid flow battery ion exchange membrane bonding device according to claim 1 or 2, characterized in that: In the ion exchange membrane, at least a portion of the back membrane separated from the ion membrane is tensioned between the laminating pressure roller and the second tension roller.

4. The liquid flow battery ion exchange membrane bonding device according to claim 1 or 2, characterized in that: The length of the laminating roller along its own axial direction is greater than or equal to the length of the electrode frame in this direction.

5. The liquid flow battery ion exchange membrane bonding device according to claim 1 or 2, characterized in that: The lengths of the first tension roller and the second tension roller along their own axial directions are greater than or equal to the widths of the ion exchange membrane.

6. The liquid flow battery ion exchange membrane bonding device according to claim 1 or 2, characterized in that: It also includes an adjusting rod, the laminating roller is installed on the adjusting rod and can move along its own axial direction along the adjusting rod to adjust the relative position of the ion exchange membrane and the electrode frame when it is wound around the laminating roller.

7. The ion exchange membrane laminating device for a flow battery according to claim 6, characterized in that: A first limit piece is provided on the adjusting rod, a second limit piece is provided on the surface of the bonding platform, the electrode frame abuts against the second limit piece, and when the bonding roller moves along the adjusting rod and abuts against the first limit piece, the ion exchange membrane wound on the bonding roller is aligned with the electrode frame.

8. The liquid flow battery ion exchange membrane bonding device according to claim 1 or 2, characterized in that: It also includes a negative pressure device. The surface of the bonding platform is provided with a plurality of suction holes, and the plurality of suction holes are connected to the negative pressure device to adsorb the ion membrane attached to the side of the electrode frame onto the surface of the bonding platform.

9. The ion exchange membrane laminating device for a flow battery according to claim 1 or 2, characterized in that: The bonding colloid is a heat-sensitive adhesive, and a heating tube is also provided in the laminating platform to heat the electrode frame.

10. The liquid flow battery ion exchange membrane bonding device according to claim 1 or 2, characterized in that: It also includes a controller, a drive motor, and a position sensor; The driving motor is connected to the laminating roller to control its movement, and the position sensor is arranged on the laminating roller to detect the real-time position of the laminating roller; The controller is electrically connected to the driving motor and the position sensor to control the movement of the laminating roller according to the real-time position of the laminating roller sent by the position sensor.

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