A new energy battery film cooling tube high-frequency welding process to prevent film burns device

Abstract

The present invention discloses a device for preventing film scalding in a high-frequency welding process for a cooling tube of a new energy battery film, comprising a workbench and a fixing frame, wherein the workbench is fixedly mounted on one side of the fixing frame, a welding base is fixedly mounted on the outer surface of the upper end of the fixing frame, a welding machine is fixedly mounted on the inner side of the fixing frame, two groups of second air nozzles are symmetrically arranged on the upper part of the welding base, two groups of first air nozzles are symmetrically arranged on the upper part of the second air nozzles, and the air pipe ends of the two groups of second air nozzles are both provided with a second manifold. By arranging the first air nozzle and the second air nozzle, the device for preventing film scalding has a two-way cooling structure, which can cool down and protect the film on the harmonica tube during the welding process, avoid deformation of the film at high temperature, and prevent the film from being scalded without increasing the length of the film area, thereby solving the problem of product film being scrapped due to scalding and battery short circuit and spontaneous combustion caused by the cold tube with the film applied first due to scalding, thereby improving its use effect.

Description

Technical Field

[0001] The present invention belongs to the technical field related to new energy batteries, and specifically is a device for preventing film burns by a high-frequency welding process for a film cooling tube of a new energy battery. Background Art

[0002] The current mainstream method for dissipating heat from cylindrical batteries is to use aluminum alloy harmonica tubes as fluid channel cooling tubes, which use liquid cooling to remove heat from the cylindrical battery cells. The cooling tubes are made into corresponding wavy shapes to increase the contact area with the battery cells. The anti-film burn device is a device used in the welding process of harmonica tubes to dissipate heat between the harmonica tubes and the insulating film on their surface.

[0003] The welding process for new energy battery harmonica tubes still has certain drawbacks. High-frequency welding at the end uses a high temperature of around 600°C to melt the welding wire into molten solder. After the molten solder cools, the end and harmonica tube are bonded together. However, the aluminum harmonica tube has a high thermal conductivity, and the high temperature at the welding point is quickly transferred upward, thereby burning the pre-applied plastic film on the flat tube. The traditional solution to this problem is to leave the film unapplied in an area approximately 100 mm from the welding point and then apply the film to this area after welding. However, this can only be applied manually, which is a time-consuming and labor-intensive process. After application, bubbles cannot be completely avoided, and the likelihood of voltage resistance failure is greater than with pre-applied film. Furthermore, the area where welding heat is transmitted is far longer than 100 mm, and film burns may still occur at the edge of the film-applied area. Increasing the length of the film area increases the risk of voltage resistance failure. Furthermore, the film-preventing device cannot be used with harmonica tubes of different sizes for new energy battery heat dissipation, reducing its flexibility. Summary of the Invention

[0004] The problems solved by the present invention are:

[0005] 1. There are still certain drawbacks in the welding process of the harmonica tube of new energy batteries. The high-frequency welding at the end uses a high temperature of about 600℃ to melt the welding wire into solder liquid. After the solder liquid cools, the end and the harmonica tube are bonded together. However, the thermal conductivity of the aluminum harmonica tube is very high. The high temperature at the welding position will be quickly transferred upward, thereby burning the plastic film pre-applied on the flat tube. The traditional solution to this problem is to not apply the film in an area about 100mm away from the welding point and then apply the film to this area after welding is completed. However, the application can only be done manually, which is a time-consuming and labor-intensive process. After application, bubbles cannot be completely avoided. The possibility of voltage resistance failure is greater than that of the film applied first. At the same time, the area where the welding heat energy is transmitted is far more than 100mm, and the edge of the film area still has the problem of film burns.

[0006] 2. The anti-film burn device cannot be used for harmonica tubes of different sizes for heat dissipation of new energy batteries, which reduces the flexibility of the anti-film burn device when used.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A device for preventing film burns during high-frequency welding of cooling tubes of new energy battery films comprises a workbench and a fixed frame, wherein the workbench is fixedly mounted on one side of the fixed frame, a welding base is fixedly mounted on the outer surface of the upper end of the workbench, a welding machine is fixedly mounted on the inner side of the fixed frame, two groups of second air nozzles are symmetrically arranged on the upper part of the welding base, two groups of first air nozzles are symmetrically arranged on the upper part of the second air nozzles, the air pipe ends of the two groups of second air nozzles are both provided with a second manifold, the air pipe ends of the two groups of first air nozzles are both provided with a first manifold, positioning frames are provided on both sides of the second air nozzle and the first air nozzle, and a fixing fixture is movably mounted on one end of the positioning frame.

[0009] As a further technical solution of the present invention, a solenoid valve for controlling the second gas nozzle and the first gas nozzle is installed on one side of the welding base, and a PLC controller is provided below the solenoid valve. The solenoid valve and the PLC controller are electrically connected. The PLC controller can output an action signal to control the second gas nozzle and the first gas nozzle when the welding machine is turned on or off.

[0010] As a further technical solution of the present invention, an air source body is provided at the lower part of the solenoid valve, a second valve body is provided between the solenoid valve and the first manifold of the first air nozzle, a first valve body is provided between the solenoid valve and the air source body, and the solenoid valve and the second manifold of the second air nozzle are connected through an air pipe. When the welding machine performs welding operation on the harmonica tube, the solenoid valve is opened, and the harmonica tube is cooled from the bottom directly through the air pipe in cooperation with the second valve body, so as to prevent the temperature from being transferred upward to burn the film while not interfering with the temperature of the welding point, so as to avoid affecting the welding effect. When the welding machine is closed for welding, the workpiece stops heating, and the PLC controller signal stops at the same time, the solenoid valve is reset, and the gas discharged from the air source body passes through the first valve body, the solenoid valve, the second valve body to the first air nozzle, and is blown downward from the first air nozzle, so as to prevent the residual temperature of the workpiece from being transferred upward while cooling the welding point, so that the workpiece is cooled quickly to avoid the residual temperature of the workpiece from burning the film.

[0011] As a further technical solution of the present invention, an adjusting bolt is installed on the inner thread of the positioning frame, and a fixing clamp is movably installed on one end of the adjusting bolt. The adjusting bolt and the fixing clamp are movably connected by a rotating shaft. The user rotates the adjusting bolt to drive the fixing clamp to move on the positioning frame, thereby adjusting the distance between the two sets of fixing clamps, so that harmonica tubes of different widths can be fixed between the two sets of fixing clamps.

[0012] As a further technical solution of the present invention, a support sleeve rod is provided at the lower part of the positioning frame, and the positioning frame and the support sleeve rod are movably connected by a lifting rod. A bolt body for fastening the lifting rod is provided on the side of the support sleeve rod. The user can adjust the use height of the positioning frame by using the setting of the lifting rod, thereby adjusting the fixed height of the fixing fixture.

[0013] As a further technical solution of the present invention, a fixed base plate is fixedly installed on the outer surface of the lower end of the support sleeve rod, and a rotating cap is provided at the other end of the adjustment bolt. The setting of the fixed base plate plays a fixing role in the installation of the support sleeve rod.

[0014] As a further technical solution of the present invention, the outer surfaces of the first header and the second header are provided with three sets of joints, and the PLC controller and the welding machine are electrically connected. The PLC controller can determine whether the welding machine is on or off, thereby controlling the opening or closing of the solenoid valve.

[0015] Beneficial effects of the present invention: The present invention sets a first air nozzle and a second air nozzle. When the high-frequency welding process anti-film scalding device for the new energy battery film cooling tube is used, the first air nozzle and the second air nozzle are respectively set at the upper and lower parts of the harmonica tube. When the welding machine performs welding operation on the end of the harmonica tube, the solenoid valve is opened, and the harmonica tube is directly blown from the bottom through the air pipe in cooperation with the second valve body to cool down the tube, thereby preventing the temperature from being transferred upward, avoiding scalding the film while not interfering with the temperature of the welding point, and avoiding affecting the welding effect. When the welding machine is turned off for welding, the workpiece stops heating up, and at the same time the PLC controller signal stops, the solenoid valve is reset, and the gas discharged from the gas source body passes through the second valve body. A valve body, a solenoid valve, a second valve body, and a first air nozzle are connected. Air is blown downward from the first air nozzle, preventing the residual heat of the workpiece from transferring upward while cooling the welding point, allowing the workpiece to cool down quickly, preventing the residual heat of the workpiece from scalding the film, and playing a certain protective role on the film. By arranging the first air nozzle and the second air nozzle, the anti-film scalding device has a two-way cooling structure, which can play a cooling and protective role on the film on the harmonica tube during the welding process, preventing the film from being deformed due to high temperature. Without increasing the length of the patch film area, the film is prevented from being scalded, thereby solving the problem of product film being scrapped due to scalding and battery short circuit and spontaneous combustion caused by the cold pipe with the film applied first due to scalding, and improving its use effect.

[0016] By setting up two groups of positioning frames, when the new energy battery film cooling tube high-frequency welding process anti-film scald device is used, the user can place the harmonica tube for battery cooling between the fixing fixtures of the two groups of positioning frames, and the user rotates the adjusting bolt to drive the fixing fixture to move on the positioning frame, thereby adjusting the distance between the two groups of fixing fixtures, so that harmonica tubes of different widths can be fixed between the two groups of fixing fixtures. Secondly, the user can adjust the use height of the positioning frame according to the welding height of the harmonica tube by using the setting of the lifting rod, which plays a role in adjusting the fixed height of the fixing fixture. By setting the positioning frame, the new energy battery film cooling tube high-frequency welding process anti-film scald device has a fixed adjustment structure, which improves its flexibility in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic structural diagram of the present invention;

[0019] Figure 2 It is a partial structural diagram of the present invention;

[0020] Figure 3 This is the overall structural diagram of the positioning frame in the present invention;

[0021] Figure 4 It is a circuit structure diagram of the present invention.

[0022] In the figure: 1. Workbench; 2. Fixed frame; 3. Welding base; 4. First gas nozzle; 5. First manifold; 6. Welding machine; 7. Second manifold; 8. Second gas nozzle; 9. Positioning frame; 10. Fixed base plate; 11. Fixing fixture; 12. Support sleeve; 13. Adjusting bolt; 14. Lifting rod; 15. Second valve body; 16. First valve body; 17. Solenoid valve; 18. PLC controller; 19. Gas source. DETAILED DESCRIPTION

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] like Figure 1-4As shown, a new energy battery film cooling tube high-frequency welding process anti-film burn device includes a workbench 1 and a fixed frame 2. The workbench 1 is fixedly installed on one side of the fixed frame 2. A welding base 3 is fixedly installed on the outer surface of the upper end of the workbench 1, and a welding machine 6 is fixedly installed on the inner side of the fixed frame 2. Two groups of second air nozzles 8 are symmetrically arranged on the upper part of the welding base 3, and two groups of first air nozzles 4 are symmetrically arranged on the upper part of the second air nozzles 8. The air pipe ends of the two groups of second air nozzles 8 are both provided with a second header 7, and the air pipe ends of the two groups of first air nozzles 4 are both provided with a first header 5. Positioning frames 9 are provided on both sides of the second air nozzle 8 and the first air nozzle 4, and a fixing fixture 11 is movably installed on one end of the positioning frame 9.

[0025] A solenoid valve 17 for controlling the second gas nozzle 8 and the first gas nozzle 4 is installed on one side of the welding base 3. A PLC controller 18 is provided below the solenoid valve 17. The solenoid valve 17 and the PLC controller 18 are electrically connected. The PLC controller 18 can output an action signal to control the second gas nozzle 8 and the first gas nozzle 4 when the welding machine 6 is turned on or off.

[0026] The lower part of the solenoid valve 17 is provided with an air source body 19. The user can use a blower as the air source body 19 to generate airflow by the operation of the blower. A second valve body 15 is provided between the solenoid valve 17 and the first manifold 5 of the first air nozzle 4. A first valve body 16 is provided between the solenoid valve 17 and the air source body 19. The solenoid valve 17 and the second manifold 7 of the second air nozzle 8 are connected through an air pipe. When the welding machine 6 performs welding operation on the harmonica pipe, the solenoid valve 17 is opened, and the harmonica pipe is directly welded from the lower part through the air pipe in conjunction with the second valve body 15. The tube performs a cooling operation to prevent the temperature from transferring upwards to burn the film while not interfering with the temperature of the welding point, thereby avoiding affecting the welding effect. When the welding machine 6 is turned off for welding, the workpiece stops heating up, and at the same time the signal of the PLC controller 18 stops, the solenoid valve 17 is reset, and the gas discharged from the gas source body 19 passes through the first valve body 16, the solenoid valve 17, and the second valve body 15 to the first gas nozzle 4, and is blown downward from the first gas nozzle 4, preventing the residual heat of the workpiece from transferring upwards while cooling the welding point, so that the workpiece is cooled quickly to avoid the residual heat of the workpiece from burning the film.

[0027] An adjusting bolt 13 is threadedly installed on the inner side of the positioning frame 9, and a fixing fixture 11 is movably installed on one end of the adjusting bolt 13. The adjusting bolt 13 and the fixing fixture 11 are movably connected via a rotating shaft. The user rotates the adjusting bolt 13 to drive the fixing fixture 11 to move on the positioning frame 9, thereby adjusting the distance between the two groups of fixing fixtures 11, so that harmonica pipes of different widths can be fixed between the two groups of fixing fixtures 11.

[0028] A support sleeve rod 12 is provided at the lower part of the positioning frame 9. The positioning frame 9 and the support sleeve rod 12 are movably connected by a lifting rod 14. A bolt body for fastening the lifting rod 14 is provided on the side of the support sleeve rod 12. The user can adjust the use height of the positioning frame 9 by using the setting of the lifting rod 14, which plays a role in adjusting the fixed height of the fixing fixture 11.

[0029] A fixed base plate 10 is fixedly mounted on the outer surface of the lower end of the support sleeve rod 12 , and a rotating cap is provided on the other end of the adjustment bolt 13 . The setting of the fixed base plate 10 plays a fixing role in the installation of the support sleeve rod 12 .

[0030] The outer surfaces of the first header 5 and the second header 7 are both provided with three sets of connectors. The PLC controller 18 and the welding machine 6 are electrically connected. The PLC controller 18 can determine whether the welding machine 6 is on or off, thereby controlling the opening or closing of the solenoid valve 17.

[0031] A device for preventing film scalding during high-frequency welding of a cooling tube for a new energy battery film. When in use, a first air nozzle 4 and a second air nozzle 8 are provided. When the device for preventing film scalding during high-frequency welding of a cooling tube for a new energy battery film are in use, the first air nozzle 4 and the second air nozzle 8 are respectively provided at the upper and lower parts of the harmonica tube. When the welding machine 6 performs welding operation on the end part of the harmonica tube, the solenoid valve 17 is opened, and the air is blown directly from the lower part of the harmonica tube through the air pipe in conjunction with the second valve body 15 to cool the tube, thereby preventing the temperature from being transferred upward, thereby avoiding scalding the film and not interfering with the temperature of the welding point, thereby avoiding affecting the welding effect. When the welding machine 6 is turned off for welding, the workpiece stops heating up, and at the same time, the signal of the PLC controller 18 stops, the solenoid valve 17 is reset, and the air is turned off. The gas discharged from the source body 19 passes through the first valve body 16, the solenoid valve 17, and the second valve body 15 to the first air nozzle 4, and is blown downward from the first air nozzle 4, thereby preventing the residual heat of the workpiece from being transferred upward and cooling the welding point, so that the workpiece is cooled quickly, thereby preventing the residual heat of the workpiece from scalding the film, and playing a certain protective role on the film. By providing the first air nozzle 4 and the second air nozzle 8, the anti-film scalding device has a two-way cooling structure, which can play a cooling and protective role on the film on the harmonica tube during the welding process, thereby preventing the film from being deformed due to high temperature, and preventing the film from being scalded without increasing the length of the patch film area, thereby solving the problem of product film being scrapped due to scalding and battery short circuit and spontaneous combustion caused by the cold pipe that was scalded and the first film was applied, thereby improving its use effect;

[0032] By setting two groups of positioning frames 9, when the new energy battery film cooling tube high-frequency welding process anti-film scald device is used, the user can place the harmonica tube for battery cooling between the fixing fixtures 11 of the two groups of positioning frames 9. The user rotates the adjusting bolt 13 so that the adjusting bolt 13 drives the fixing fixture 11 to move on the positioning frame 9, thereby adjusting the distance between the two groups of fixing fixtures 11, so that harmonica tubes of different widths can be fixed between the two groups of fixing fixtures 11. Secondly, the user can adjust the use height of the positioning frame 9 according to the welding height of the harmonica tube by using the setting of the lifting rod 14, which plays a role in regulating the fixed height of the fixing fixture 11. By setting the positioning frame 9, the new energy battery film cooling tube high-frequency welding process anti-film scald device has a fixed adjustment structure, which improves its flexibility in use.

[0033] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A device for preventing film burns in a high-frequency welding process for a new energy battery film cooling tube, comprising a workbench (1) and a fixing frame (2), wherein the workbench (1) is fixedly mounted on one side of the fixing frame (2), a welding base (3) is fixedly mounted on the outer surface of the upper end of the workbench (1), and a welding machine (6) is fixedly mounted on the inner side of the fixing frame (2), characterized in that: Two groups of second gas nozzles (8) are symmetrically arranged on the upper part of the welding base (3), and two groups of first gas nozzles (4) are symmetrically arranged on the upper part of the second gas nozzles (8). The gas pipe ends of the two groups of second gas nozzles (8) are each provided with a second header (7), and the gas pipe ends of the two groups of first gas nozzles (4) are each provided with a first header (5). Positioning frames (9) are provided on both sides of the second gas nozzles (8) and the first gas nozzles (4), and a fixing fixture (11) is movably installed at one end of the positioning frame (9); An adjusting bolt (13) is threadedly mounted on the inner side of the positioning frame (9), and a fixing fixture (11) is movably mounted on one end of the adjusting bolt (13), and the adjusting bolt (13) and the fixing fixture (11) are movably connected via a rotating shaft; A support sleeve rod (12) is provided at the lower portion of the positioning frame (9), the positioning frame (9) and the support sleeve rod (12) are movably connected via a lifting rod (14), and a bolt body for fastening the lifting rod (14) is provided on the side of the support sleeve rod (12); A solenoid valve (17) for controlling the second gas nozzle (8) and the first gas nozzle (4) is installed on one side of the welding base (3), and a PLC controller (18) is provided below the solenoid valve (17). The solenoid valve (17) and the PLC controller (18) are electrically connected; An air source body (19) is provided at the lower portion of the solenoid valve (17), a second valve body (15) is provided between the solenoid valve (17) and the first manifold (5) of the first air nozzle (4), a first valve body (16) is provided between the solenoid valve (17) and the air source body (19), and an air pipe is connected between the solenoid valve (17) and the second manifold (7) of the second air nozzle (8); When the welding machine (6) is performing welding operation on the harmonica tube, the solenoid valve (17) is opened, and the harmonica tube is cooled from the bottom directly through the air pipe in cooperation with the second valve body (15), preventing the temperature from being transferred upward to burn the film while not interfering with the temperature of the welding point, thereby avoiding affecting the welding effect. When the welding machine (6) is closed for welding, the workpiece stops heating up, and at the same time, the signal of the PLC controller (18) stops, the solenoid valve (17) is reset, and the gas discharged from the gas source body (19) passes through the first valve body (16), the solenoid valve (17), the second valve body (15) to the first air nozzle (4), and is blown downward from the first air nozzle (4).

2. The device for preventing film burns during high-frequency welding of a new energy battery film cooling tube according to claim 1 is characterized in that: A fixed base plate (10) is fixedly mounted on the outer surface of the lower end of the support sleeve rod (12), and a rotating cap is provided on the other end of the adjustment bolt (13).

3. The device for preventing film burns during high-frequency welding of a new energy battery film cooling tube according to claim 1 is characterized in that: The outer surfaces of the first header (5) and the second header (7) are each provided with three sets of connectors, and the PLC controller (18) and the welding machine (6) are electrically connected.

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