High-stability recyclable soldering flux spraying device and soldering flux spraying production line

Abstract

The utility model relates to the related field of new energy power batteries, in particular to a high-stability recoverable soldering flux spraying device and a soldering flux spraying production line. The feeding end of the feeding pump I is connected with the discharging end of the soldering flux storage tank through a pipeline; the feeding end of the flow control valve I is connected with the discharging end of the feeding pump I through a pipeline, and the flow control valve I is provided with two discharging ends; the input end of the spray gun is connected with the first discharging end of the flow control valve I through a pipeline; the flow control valve II is provided with a feeding end and at least one discharging end, the feeding end of the flow control valve II is connected with the second discharging end of the flow control valve I through a pipeline, and the discharging end of the flow control valve II is connected with the feeding end of the soldering flux storage tank through a pipeline. The system can solve the problem of non-uniform spraying of the brazing flux, reduce the waste of the brazing flux, reduce the equipment maintenance frequency and reduce the equipment maintenance time. And the waste of the auxiliary material brazing flux for product production is reduced, and the product manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field related to new energy power batteries, in particular to a highly stable and recyclable flux spraying device and a flux spraying production line. Background Art

[0002] At present, the production of new energy vehicle power battery water cooling plate and energy storage box cold plate adopts flux spraying method for flux coating. The flux will produce precipitation and stratification during the gun stop process. The flux spraying will block the spray gun, resulting in uneven flux spraying of the product. The flux residue on the cold plate will form flux crystals and gel will be easily formed during the cooling cycle, resulting in blockage of the cold plate water channel and increased resistance to coolant flow. Uneven flux spraying leads to flux accumulation, and flux residue will also cause corrosion of the product, leading to product leakage and shortened product life cycle. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a highly stable and recyclable flux spraying device, which can solve the problem of uneven flux spraying while reducing flux waste and saving equipment maintenance time. At the same time, the flux spraying amount is effectively controlled. The utility model also proposes a flux spraying production line, which includes the above-mentioned highly stable and recyclable flux spraying device.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In the first technical solution, the highly stable and recyclable flux spraying device comprises

[0006] The flux storage tank comprises a discharge end and a feed end, and the flux storage tank is used for storing the flux;

[0007] A feeding pump I, whose feeding end is connected to the discharging end of the flux storage tank through a pipeline, and is used to drive the flux transportation;

[0008] A flow control valve I, whose inlet end is connected to the outlet end of the feed pump I through a pipeline, and the flow control valve I has two outlet ends;

[0009] A spray gun, the input end of which is connected to the first discharge end of the flow control valve I through a pipeline;

[0010] The flow control valve II has an inlet end and at least one outlet end. The inlet end of the flow control valve II is connected to the second outlet end of the flow control valve I through a pipeline, and the outlet end of the flow control valve II is connected to the inlet end of the flux storage tank through a pipeline.

[0011] In the first technical solution, as a preference, a locking valve I for switching the open and closed state of the pipeline is further provided on the pipeline between the discharge end of the flow control valve II and the feed end of the flux storage tank.

[0012] In the first technical solution, preferably, the flow control valve II also has a second discharge end, the second discharge end of the flow control valve II is connected to the waste collection equipment through a pipeline, and a locking valve II is arranged between the second discharge end of the flow control valve II and the waste collection equipment through the pipeline.

[0013] In the first technical solution, as a preference, a reversing valve is further provided on the pipeline between the flux storage tank and the feeding pump I, the reversing valve having two output ends and one output end, the first input end of the reversing valve being connected to the output end of the flux storage tank through a pipeline, the second input end of the reversing valve being connected to the cleaning storage tank through a pipeline, and the output end of the reversing valve being connected to the feed end of the feeding pump I through a pipeline.

[0014] In the first technical solution, preferably, the flux storage tank is equipped with a stirring device for stirring the flux.

[0015] In the first technical solution, preferably, the highly stable and recyclable flux spraying device further comprises a recovery system for transporting and recovering the flux in the waste collection device.

[0016] In the first technical solution, as preferably, the recovery system includes a recovery pump, a flux recovery tank and a feed pump II, the input end of the recovery pump is placed in the waste collection equipment through a pipeline, the output end of the recovery pump is connected to the flux recovery tank through a pipeline, the input end of the feed pump II is connected to the flux recovery tank, and the output end of the feed pump II is connected to the flux storage tank.

[0017] In the first technical solution, preferably, the flux recovery tank is provided with a heating device on the outside for heating the flux inside the flux recovery tank.

[0018] In the first technical solution, preferably, the flux recovery tank further includes a feeding port and a concentration detector for detecting the flux concentration inside the flux recovery tank.

[0019] In the first technical solution, the flux spraying production line includes

[0020] A conveying mechanism, and a degreasing system and a spraying furnace arranged in sequence along the conveying direction of the conveying mechanism, wherein the spraying furnace is equipped with a high-stability and recyclable flux spraying device as described in the first technical solution.

[0021] The beneficial effects of using the utility model are:

[0022] This highly stable and recyclable flux spraying device can perform conventional flux spraying. By controlling the flow control valve, part of the brazing is sprayed out through the spray gun during the spraying process, and part of the flux returns to the flux storage tank to avoid the flux blocking the reflux channel; when the spraying mode is not in progress, the flux circulates normally; in the cleaning mode, the flux can be cleaned by the cleaning agent output from the cleaning storage tank to avoid the flux blocking the flow control valve and the spray gun. This system solves the problems of uneven cold plate flux spraying and unstable spray gun flux spraying through flux circulation, reduces flux waste and saves equipment maintenance time. This design can also reasonably utilize the principle of fluid flow to solve the problem of uneven product flux spraying.

[0023] On the other hand, the flux spraying production line proposed by the utility model uses a highly stable and recyclable flux spraying device, and also inherits the advantages of the highly stable and recyclable flux spraying device.

[0024] The device can solve the problem of uneven flux spraying, reduce flux waste, reduce equipment maintenance times and equipment maintenance time, recycle flux, reduce flux waste in product production, and reduce product manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the connection of a high-stability and recyclable flux spraying device.

[0026] Figure 2 Schematic diagram of the production line where the high-stability and recyclable flux spraying device is located.

[0027] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0028] Figure 4 This is the structural diagram of the spray gun part.

[0029] Reference numerals include:

[0030] 10- spraying furnace, 11- flux storage tank, 12- reversing valve, 13- feeding pump Ⅰ, 14- flow control valve Ⅰ, 15- spray gun, 16- flow control valve Ⅱ, 17- locking valve Ⅰ, 18- waste tank, 19- cleaning storage tank, 110- locking valve Ⅱ, 111- recovery pump, 112- flux recovery tank, 113- feeding pump Ⅱ, 114- heating device, 115- feeding port, 116- concentration detector;

[0031] 20-Degreasing system. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the technical solution more clear, the technical solution is further described in detail below in conjunction with specific implementation methods. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the technical solution.

[0033] In order to solve the problem that the flux spraying method is used for flux coating in the production of water-cooled plates for power batteries of new energy vehicles and energy storage boxes in the prior art, the flux will produce precipitation and stratification during the stopping of the gun, and the flux spraying will block the spray gun 15, resulting in uneven flux spraying of the product, flux residue on the cold plate to form flux crystals, and gel is easily formed during the cooling cycle, resulting in blockage of the cold plate water channel and increased flow resistance of the coolant, such as Figure 1-Figure 3 As shown, this embodiment proposes a highly stable and recyclable brazing flux spraying device, including a brazing flux storage tank 11, including a discharge end and a feed end, the brazing flux storage tank 11 is used to store the brazing flux; a feeding pump Ⅰ13, whose feed end is connected to the discharge end of the brazing flux storage tank 11 through a pipeline, and is used to drive the brazing flux to be transported through the pipeline; a flow control valve Ⅰ14, whose feed end is connected to the discharge end of the feeding pump Ⅰ13 through a pipeline, and the flow control valve Ⅰ14 has two discharge ends; a spray gun 15, whose input end is connected to the first discharge end of the flow control valve Ⅰ14 through a pipeline; a flow control valve Ⅱ16, which has a feed end and at least one discharge end, the feed end of the flow control valve Ⅱ16 is connected to the second discharge end of the flow control valve Ⅰ14 through a pipeline, and the discharge end of the flow control valve Ⅱ16 is connected to the feed end of the brazing flux storage tank 11 through a pipeline.

[0034] Furthermore, in order to increase the discharge of flux waste and prevent the flux from solidifying in the pipeline and related equipment, a locking valve I17 for switching the open and closed state of the pipeline is also provided on the pipeline between the discharge end of the flow control valve II16 and the feed end of the flux storage tank 11. The flow control valve II16 also has a second discharge end, and the second discharge end of the flow control valve II16 is connected to the waste collection equipment through a pipeline. A reversing valve 12 is also provided on the pipeline between the flux storage tank 11 and the feed pump I13. The reversing valve 12 has two output ends and one output end. The first input end of the reversing valve 12 is connected to the output end of the flux storage tank 11 through a pipeline, the second input end of the reversing valve 12 is connected to the cleaning storage tank 19 through a pipeline, and the output end of the reversing valve 12 is connected to the feed end of the feed pump I13 through a pipeline.

[0035] The high-stability recyclable flux spraying device further comprises a recovery system for transporting the flux in the waste tank 18 for recovery.

[0036] Specifically, the recovery system includes a recovery pump 111, a flux recovery tank 112 and a feed pump II 113. The input end of the recovery pump 111 is placed in the waste tank 18 through a pipeline, the output end of the recovery pump 111 is connected to the flux recovery tank 112 through a pipeline, the input end of the feed pump II 113 is connected to the flux recovery tank 112, and the output end of the feed pump II 113 is connected to the flux storage tank 11.

[0037] The flux recovery tank 112 has a heating device 114 outside thereof for heating the flux inside the flux recovery tank 112 . The heating device 114 can keep the flux recovery tank 112 in a fluid state to prevent the flux from solidifying inside the flux recovery tank 112 .

[0038] The flux recovery tank 112 also includes a feed port 115 and a concentration detector 116 for detecting the flux concentration inside the flux recovery tank 112 . When the concentration detector 116 detects that the flux in the flux recovery tank 112 is less than a threshold value, auxiliary materials can be added to the flux recovery tank 112 through the feed port 115 .

[0039] Specifically, the sum of the above technical solutions is a complete system of this system. When this system is in use, due to actual production needs, it can be divided into four usage modes, namely spraying mode, non-spraying mode and cleaning mode. Multiple modes can be used in combination to achieve intermittent spraying and continuous spraying of products. The following describes in detail the use process of this system in four modes.

[0040] Spraying mode: In the spraying mode, the brazing agent in the brazing agent storage tank 11 is driven and output by the feeding pump Ⅰ13. At this time, the reversing valve 12 keeps the brazing agent storage tank 11 and the feeding pump Ⅰ13 connected. At the same time, the flow control valve Ⅰ14 remains in an open state, the flow control valve Ⅱ16 remains in a non-fully open state, the locking valve Ⅰ17 is in an open state, and the locking valve Ⅱ110 is closed. The brazing agent output by the feeding pump Ⅰ13 is sprayed through the spray gun 15 for normal brazing agent spraying, and part of the brazing agent flows back to the brazing agent storage tank 11 through the flow control valve Ⅱ16 and the locking valve Ⅰ17.

[0041] Non-spraying mode: In the spraying mode, the flux in the flux storage tank 11 is driven to output by the feed pump Ⅰ13. At this time, the reversing valve 12 keeps the flux storage tank 11 and the feed pump Ⅰ13 connected. At the same time, the flow control valve Ⅰ14 remains open, the flow control valve Ⅱ16 remains fully open, the locking valve Ⅰ17 is open, the locking valve Ⅱ110 is closed, and the spray gun 15 is closed. The flux returns directly to the flux storage tank 11 through the flow control valve Ⅰ14, the flow control valve Ⅱ16 and the locking valve Ⅰ17. In this state, the product flux does not enter the spraying mode. This mode directly circulates the flux to prevent the flux from precipitating, and to prevent the flux from precipitating during the flux gun stop process, causing uneven flux spraying and gun blockage.

[0042] Cleaning mode: At this time, the reversing valve 12 is reversed, so that the cleaning storage tank 19 is connected to the feeding pump Ⅰ13, the locking valve Ⅰ17 is closed, and the locking valve Ⅱ110 is opened. The cleaning agent output from the cleaning storage tank 19 is transported by the feeding pump Ⅰ13, and after passing through the flow control valve Ⅰ14, part of the cleaning agent is output to the spray gun 15, and part of the cleaning agent is output to the flow control valve Ⅱ16. The brazing agent is sprayed from the spray gun 15 to clean the spray gun 15, and the other part flows directly to the flow control valve. The brazing agent and cleaning agent passing through the spray gun 15 and the flow control valve Ⅱ16 fall into the waste tank 18. After this process, the cleaning of the brazing agent spraying pipeline is completed.

[0043] Recovery mode: There is a stirring device in the waste tank 18 to prevent the flux in the waste tank 18 from settling. The recovery pump 111 is started to recover the flux back to the flux recovery tank 112. After detection by the concentration detector 116, flux or water is added from the feeding port according to the flux density of the flux recovery tank 112 to adjust the flux concentration. After the flux density requirement of the spraying flux is met, the feeding pump II 113 starts to transport the flux from the flux recovery tank 112 to the flux storage tank 11 for use in subsequent product spraying.

[0044] Preferably, both the flux storage tank 11 and the flux recovery tank 112 are equipped with a stirring device for stirring the flux, and the function of the stirring device is to prevent the flux in the flux storage tank 11 and the flux recovery tank 112 from being stratified.

[0045] This design can reasonably utilize the principle of fluid flow to solve the problem of uneven flux spraying of the product.

[0046] In another embodiment, if Figure 2 and Figure 3 , Figure 4 As shown, the present application also proposes a flux spraying production line, including a conveying mechanism, and a degreasing system 20 and a spraying furnace 10 arranged in sequence along the conveying direction of the conveying mechanism. The spraying furnace 10 is equipped with a high-stability and recyclable flux spraying device in the first technical solution.

[0047] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present technical content. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of this patent.

Claims

1. High stability and recyclable flux spraying device, characterized by: include The flux storage tank comprises a discharge end and a feed end, and the flux storage tank is used for storing the flux; A feeding pump I, whose feeding end is connected to the discharging end of the flux storage tank through a pipeline, and is used to drive the flux transportation; A flow control valve I, whose inlet end is connected to the outlet end of the feed pump I through a pipeline, and the flow control valve I has two outlet ends; A spray gun, the input end of which is connected to the first discharge end of the flow control valve I through a pipeline; The flow control valve II has an inlet end and at least one outlet end. The inlet end of the flow control valve II is connected to the second outlet end of the flow control valve I through a pipeline, and the outlet end of the flow control valve II is connected to the inlet end of the flux storage tank through a pipeline.

2. The highly stable and recyclable flux spraying device according to claim 1, characterized in that: A locking valve I for switching the open and closed state of the pipeline is also provided on the pipeline between the discharge end of the flow control valve II and the feed end of the flux storage tank.

3. The highly stable and recyclable flux spraying device according to claim 2, characterized in that: The flow control valve II also has a second discharge end, and the second discharge end of the flow control valve II is connected to the waste collection device through a pipeline, and a locking valve II is arranged between the second discharge end of the flow control valve II and the waste collection device through the pipeline.

4. The highly stable and recyclable flux spraying device according to claim 2, characterized in that: A reversing valve is also arranged on the pipeline between the flux storage tank and the feeding pump I. The reversing valve has two input ends and one output end. The first input end of the reversing valve is connected to the output end of the flux storage tank through a pipeline, the second input end of the reversing valve is connected to the cleaning storage tank through a pipeline, and the output end of the reversing valve is connected to the feeding end of the feeding pump I through a pipeline.

5. The highly stable and recyclable flux spraying device according to claim 1, characterized in that: The flux storage tank is internally provided with a stirring device for stirring the flux.

6. The highly stable and recyclable flux spraying device according to claim 3, characterized in that: The highly stable and recyclable flux spraying device further comprises a recovery system for transporting and recovering the flux in the waste collection device.

7. The highly stable and recyclable flux spraying device according to claim 6, characterized in that: The recovery system includes a recovery pump, a flux recovery tank and a feed pump II. The input end of the recovery pump is placed in a waste collection device through a pipeline, the output end of the recovery pump is connected to the flux recovery tank through a pipeline, the input end of the feed pump II is connected to the flux recovery tank, and the output end of the feed pump II is connected to the flux storage tank.

8. The highly stable and recyclable flux spraying device according to claim 7, characterized in that: The outside of the flux recovery tank is provided with a heating device for heating the flux inside the flux recovery tank.

9. The highly stable and recyclable flux spraying device according to claim 7, characterized in that: The flux recovery tank also includes a feeding port and a concentration detector for detecting the flux concentration inside the flux recovery tank.

10. Flux spraying production line, characterized by: include A conveying mechanism, and a degreasing system and a spraying furnace arranged in sequence along the conveying direction of the conveying mechanism, wherein the spraying furnace is equipped with a high-stability and recyclable flux spraying device as described in any one of claims 1-9.

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