阅读说明：本技术 一种电池包冷却管高频感应自动焊接装置及工艺 (High-frequency induction automatic welding device and process for battery pack cooling pipe ) 是由 程传峰 唐永亮 金茂文 王项如 刘青云 刘帅 于 2021-08-31 设计创作，主要内容包括：本发明提供一种电池包冷却管高频感应自动焊接装置及工艺,包括高频钎焊机构、冷却管固定机构以及视觉检测机构,该焊接装置包括高频发生器和馈电模块,所述馈电模块包括电极触头、感应圈和阻抗器；所述固定机构包括设置在感应线圈正下方用于固定冷却管接头的真空吸气底座以及与高频钎焊机构连接的用于固定冷却管管体的固定支架；所述视觉检测机构包括钎焊成像采集装置以及图像处理装置。本发明通过自动钎焊装置对冷却管进行焊接,并通过真空吸气底座对接头进行吸附式固定,保证管件的一致性及稳定性,避免因位置偏差而影响局部焊接温度影响焊接效果,基于视觉检测机构检测焊接情况,焊接完成可以自动关闭装置,提高了冷却管焊接的质量和效率。(The invention provides a high-frequency induction automatic welding device and a high-frequency induction automatic welding process for a cooling pipe of a battery pack, wherein the high-frequency induction automatic welding device comprises a high-frequency brazing mechanism, a cooling pipe fixing mechanism and a visual detection mechanism, the welding device comprises a high-frequency generator and a feed module, and the feed module comprises an electrode contact, an induction coil and an impedor; the fixing mechanism comprises a vacuum suction base which is arranged under the induction coil and used for fixing the cooling pipe joint and a fixing support which is connected with the high-frequency brazing mechanism and used for fixing the cooling pipe body; the visual detection mechanism comprises a brazing imaging acquisition device and an image processing device. According to the invention, the cooling pipe is welded through the automatic brazing device, and the joint is fixed in an adsorption manner through the vacuum suction base, so that the consistency and stability of the pipe fitting are ensured, the influence of local welding temperature on the welding effect due to position deviation is avoided, the welding condition is detected based on the visual detection mechanism, the device can be automatically closed after the welding is finished, and the welding quality and efficiency of the cooling pipe are improved.)

1. The utility model provides a battery package cooling tube high frequency induction automatic welder which characterized in that includes:

the high-frequency brazing mechanism comprises a high-frequency generator and a feeding module, wherein the feeding module comprises an electrode contact, an induction coil and an impedor;

the cooling pipe fixing mechanism comprises a vacuum suction base arranged right below the induction coil and used for fixing a cooling pipe joint, and a fixing support which is positioned right above the vacuum suction base and connected with the high-frequency brazing mechanism and used for fixing a cooling pipe body; and

the visual detection mechanism comprises a brazing imaging acquisition device and an image processing device.

2. The high-frequency induction automatic welding device for the battery pack cooling pipe according to claim 1, wherein the high-frequency generator is internally provided with a circuit which is connected with a power supply and converts low-frequency alternating current input by the power supply into high-frequency alternating current.

3. The high-frequency induction automatic welding device for the battery pack cooling pipe according to claim 1, wherein the vacuum suction base comprises a base with a cavity formed therein and two positioning protrusions arranged side by side at the upper end of the base, the center of each protrusion is provided with a downward air hole communicated with the cavity of the base, the lower end of each air hole is horizontally provided with a group of air inlet nozzles and a silencer communicated with the cavity, and the air inlet nozzles are connected with the air outlet end of the compressed air high-speed injection device.

4. The high-frequency induction automatic welding device for the battery pack cooling pipe as claimed in claim 3, wherein a sliding block is arranged on the lower end face of the base and is connected with the high-frequency brazing mechanism through a sliding rail, and a bolt for adjusting the distance between the base and the high-frequency brazing mechanism is further arranged on the sliding rail.

5. The high-frequency induction automatic welding device for the battery pack cooling pipe as claimed in claim 1, wherein the brazing imaging acquisition device comprises a light source and a camera for acquiring images of a welding area in real time.

6. A high-frequency induction automatic welding process for a battery pack cooling pipe, which is realized based on the high-frequency induction automatic welding device for the battery pack cooling pipe of any one of claims 1 to 5, and is characterized by comprising the following steps:

fixing and clamping a joint of a cooling pipe to be welded and a pipe body, and prefabricating welding flux on a welding surface;

step two, starting a high-frequency brazing mechanism for welding, and simultaneously starting a light source to acquire images of a welding area in real time through a camera and transmit the images to an image processing system;

and step three, the image processing system analyzes and processes the received image until the image processing system judges that the welding is finished and then automatically closes the welding device.

7. The high-frequency induction automatic welding process for the battery pack cooling pipe as claimed in claim 6, wherein the step one is realized by the following method:

placing a cooling pipe joint to be welded on a vacuum air suction base, clamping a protrusion on the vacuum air suction base with a groove of the joint, and simultaneously starting a compressed air high-speed injection device;

clamping a cooling pipe body to be welded on a fixed support;

and adjusting the base to align the welding surfaces of the joint and the pipe body, and prefabricating welding wires on the welding surfaces.

8. The high-frequency induction automatic welding process for the battery pack cooling pipe as claimed in claim 6, wherein the third step is realized by the following specific method:

prefabricating an image of a standard welding surface in an image processing system;

and the image processing system compares the welding surface image acquired by the camera in real time with the image of the standard welding surface, and the welding is finished when the imaging effect of the standard welding surface is achieved.

Technical Field

The invention relates to the technical field of welding of a battery pack cooling pipe of a new energy automobile, in particular to a high-frequency induction automatic welding device and process for the battery pack cooling pipe.

Background

In the prior art, the welding forming processes commonly used for the battery cooling system mainly include laser welding, friction welding, argon arc welding, explosion welding, high-frequency induction brazing, atmosphere tunnel furnace welding and the like, wherein the high-frequency induction welding (with the frequency of 300-450 kHz) is widely applied due to the advantages of high heating speed, small heat affected zone, capability of avoiding or reducing the formation of brittle compounds on the welding surface and the like.

The high-frequency welding is a novel welding process for butting steel plates and other metal materials by utilizing a skin effect and an adjacent effect generated by high-frequency current, the high-frequency welding technology is one of key processes of straight welded pipe production, the quality of welding quality directly influences the overall strength, quality and production efficiency of welded pipe products, and in order to meet the requirements of the welding industry on high-quality and high-efficiency production, the welding flexibility, intelligence and automation become the development trend of the welding industry.

Disclosure of Invention

The invention aims to provide a high-frequency induction automatic welding device and a high-frequency induction automatic welding process for a battery pack cooling pipe, and aims to solve the problems in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-frequency induction automatic welding device for a battery pack cooling pipe comprises:

the high-frequency brazing mechanism comprises a high-frequency generator and a feeding module, wherein the feeding module comprises an electrode contact, an induction coil and an impedor;

the cooling pipe fixing mechanism comprises a vacuum suction base arranged right below the induction coil and used for fixing a cooling pipe joint, and a fixing support which is positioned right above the vacuum suction base and connected with the high-frequency brazing mechanism and used for fixing a cooling pipe body; and

the visual detection mechanism comprises a brazing imaging acquisition device and an image processing device.

Preferably, the high frequency generator is provided with a circuit which is connected with a power supply and converts low frequency alternating current input by the power supply into high frequency alternating current.

Furthermore, the vacuum air suction base comprises a base with a cavity arranged inside and two positioning protrusions arranged at the upper end of the base side by side, the center of each protrusion is provided with an air hole communicated with the cavity of the base downwards, the lower end of each air hole is horizontally provided with a group of air inlet nozzles and silencers, the air inlet nozzles are communicated with the cavity, and the air outlet ends of the air inlet nozzles and the compressed air high-speed injection device are connected.

Preferably, the lower end face of the base is provided with a sliding block and is connected with the high-frequency brazing mechanism through a sliding rail, and the sliding rail is further provided with a bolt for adjusting the distance between the base and the high-frequency brazing mechanism.

Preferably, the brazing imaging acquisition device comprises a light source and a camera for acquiring images of the welding area in real time.

A high-frequency induction automatic welding process for a battery pack cooling pipe is realized based on the high-frequency induction automatic welding device for the battery pack cooling pipe, and comprises the following steps:

fixing and clamping a joint of a cooling pipe to be welded and a pipe body, and prefabricating welding flux on a welding surface;

step two, starting a high-frequency brazing mechanism for welding, and simultaneously starting a light source to acquire images of a welding area in real time through a camera and transmit the images to an image processing system;

and step three, the image processing system analyzes and processes the received image until the image processing system judges that the welding is finished and then automatically closes the welding device.

Further, the first step is specifically realized by the following method:

placing a cooling pipe joint to be welded on a vacuum air suction base, clamping a protrusion on the vacuum air suction base with a groove of the joint, and simultaneously starting a compressed air high-speed injection device;

clamping a cooling pipe body to be welded on a fixed support;

and adjusting the base to align the welding surfaces of the joint and the pipe body, and prefabricating welding wires on the welding surfaces.

Further, the third step is specifically realized by the following method:

prefabricating an image of a standard welding surface in an image processing system;

and the image processing system compares the welding surface image acquired by the camera in real time with the image of the standard welding surface, and the welding is finished when the imaging effect of the standard welding surface is achieved.

According to the invention, the cooling pipe is welded through the automatic brazing device, and the joint is fixed in an adsorption manner through the vacuum suction base, so that the consistency and stability of the pipe fitting are ensured, the influence of local welding temperature on the welding effect due to position deviation is avoided, the welding condition is detected based on the visual detection mechanism, the device can be automatically closed after the welding is finished, and the welding quality and efficiency of the cooling pipe are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the vacuum suction base according to the present invention;

FIG. 3 is a schematic flow chart of the steps of the present invention;

in the figure: 1. a high frequency generator; 2. an induction coil; 3. a vacuum suction base; 31. a base; 32. positioning the projection; 33. air holes; 34. an air inlet nozzle; 35. a muffler; 36. a slider; 37. a slide rail; 38. a bolt; 4. fixing a bracket; 5. a light source; 6. a camera.

Detailed Description

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The high-frequency induction automatic welding device for the cooling pipe of the battery pack, which is shown in figure 1, comprises a high-frequency brazing mechanism, a cooling pipe fixing mechanism and a visual detection mechanism, and comprises a high-frequency generator and a feed module, wherein the feed module comprises an electrode contact, an induction coil and an impedor; the fixing mechanism comprises a vacuum suction base which is arranged under the induction coil and used for fixing the cooling pipe joint and a fixing support which is connected with the high-frequency brazing mechanism and used for fixing the cooling pipe body; the visual detection mechanism comprises a brazing imaging acquisition device and an image processing device.

The high-frequency generator of the preferred embodiment is internally provided with a circuit which is connected with a power supply and converts low-frequency alternating current input by the power supply into high-frequency alternating current, the high-frequency current is converted into a high-frequency magnetic field by using the electromagnetic induction principle after being added to an inductance coil, and the high-frequency magnetic field acts on welding materials in the magnetic field to generate an eddy current effect, namely, induced current which is in direct proportion to the magnetic field intensity is generated in a cooling pipe fitting, the eddy current is influenced by the skin effect, and the higher the frequency is, the more concentrated the surface layer of the pipe body is; meanwhile, when the eddy flows in the pipe body, heat is generated by utilizing the current heat effect principle by means of the inherent resistance value inside; the heat is directly generated in the object, and the heating speed and the efficiency are high.

As shown in fig. 2, in order to ensure the consistency and stability of the pipe fittings and avoid the influence of the local welding temperature due to the position deviation on the welding effect, the vacuum suction base in the preferred embodiment comprises a base with a cavity inside and two positioning protrusions arranged side by side at the upper end of the base, the center of each protrusion is provided with an air hole communicated with the cavity of the base downwards, the lower end of each air hole is horizontally provided with a group of air inlet nozzles and silencers communicated with the cavity, and the air inlet nozzles are connected with the air outlet end of the compressed air high-speed injection device; the lower end face of the base is provided with a sliding block and is connected with the high-frequency brazing mechanism through a sliding rail, and the sliding rail is further provided with a bolt used for adjusting the distance between the base and the high-frequency brazing mechanism, so that the joint and the welding surface of the pipe body can be conveniently adjusted to be aligned before welding.

In specific use, the joint of the pipe fitting is limited through the positioning protrusion, then compressed gas sprayed at a high speed is introduced from the air inlet nozzle and flows out of the silencer, so that downward negative pressure is continuously generated in the cavity of the base, the cooling pipe joint is attracted towards the right lower part, the deformation caused by extruding the joint is avoided, meanwhile, the consistency and the stability of pipe fitting processing can be ensured, and the welding effect caused by the influence of local welding temperature due to position deviation is avoided; meanwhile, hot air in the cavity can be extracted, and the temperature in the air hole is rapidly reduced to achieve the effect of rapid cooling.

The visual detection mechanism mainly aims to collect the reflection point imaging of the welding surface, the welding surface is imaged with good welding effect and almost has no reflection point, and in order to obtain clear imaging data, the brazing imaging collection device of the preferred embodiment comprises a light source and a camera for collecting the image of the welding area in real time.

The high-frequency induction automatic welding process for the cooling pipe of the battery pack, which is realized based on the high-frequency induction automatic welding device for the cooling pipe of the battery pack, as shown in fig. 3, comprises the following steps:

s1, fixing and clamping the joint of the cooling pipe to be welded and the pipe body, and prefabricating welding flux on a welding surface; specifically, a cooling pipe joint to be welded is placed on a vacuum air suction base, a protrusion on the vacuum air suction base is clamped with a groove of the joint, and meanwhile, a compressed air high-speed injection device is started; clamping the cooling pipe body to be welded on the fixed support; then the base is adjusted to align the welding surfaces of the joint and the pipe body, and welding wires are prefabricated on the welding surfaces.

S2, starting a high-frequency brazing mechanism for welding, and simultaneously starting a light source to acquire images of a welding area in real time through a camera and transmit the images to an image processing system;

s3, the image processing system analyzes and processes the received image, and automatically closes the welding device after the image processing system judges that the welding is finished; in the specific operation, an image of a standard welding surface is prefabricated in an image processing system; in the welding process, the image processing system compares the welding surface image acquired by the camera in real time with the image of the standard welding surface, and the welding is completed when the imaging effect of the standard welding surface is achieved.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.