Welding protective gas monitoring device, welding system and battery production system

Abstract

The utility model discloses a welding protective gas monitoring device, a welding system and a battery production system. The welding protective gas monitoring device comprises a gas flow meter, a gas pressure sensor and a controller, wherein the gas flow meter is used for detecting the flow of protective gas sprayed by a welding gun; the controller is in communication connection with the gas flow meter and is used for receiving a signal of the gas flow meter; and the alarm device is in communication connection with the controller and is used for receiving the alarm signal sent by the controller so as to send out an alarm prompt. Before the welding gun is used, the welding gun is inserted into the gas flow meter, the gas flow meter detects the flow of protective gas sprayed out when the welding gun works, and the controller determines whether an alarm signal is sent to the alarm device or not by monitoring whether the flow of the protective gas is normal or not, so that an operator can conveniently overhaul a gas supply pipeline of welding equipment; and the welding gun can normally exhaust the protective gas during working, so that the probability of defects such as welding pores, insufficient penetration depth or cracks during welding is reduced.

Description

Technical Field

[0001] The present application relates to a welding device, and more particularly to a welding shielding gas monitoring device and a welding system. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] During the welding process, the welding protection tube outside the welding gun conductive nozzle is prone to blockage, or the welding gas pipeline is blocked or damaged, resulting in insufficient flow of protective gas during welding, which makes it easy for welding defects such as welding porosity, insufficient penetration or cracks to occur during welding. Utility Model Content

[0004] In view of the above problems, the present application provides a welding shielding gas monitoring device and a welding system, which monitors the shielding gas flow before and after welding, thereby reducing the probability of the above defects occurring during welding.

[0005] The first aspect of the present application provides a welding shielding gas monitoring device, comprising:

[0006] Gas flow meter: The gas flow meter is used to detect the flow rate of the shielding gas sprayed from the welding gun;

[0007] A controller is communicatively connected with the gas flow meter and is used to receive a signal from the gas flow meter;

[0008] The alarm device is connected to the controller for receiving the alarm signal from the controller to issue an alarm prompt.

[0009] Before using the welding gun, insert the welding gun into the gas flow meter. The gas flow meter detects the flow rate of the shielding gas sprayed when the welding gun is working. The controller determines whether to send an alarm signal to the alarm device by monitoring whether the flow rate of the shielding gas is normal. When the flow rate of the shielding gas is within the preset flow rate range, the controller does not send an alarm signal to the alarm device. When the flow rate of the shielding gas is not within the preset flow rate range, the controller sends an alarm signal to the alarm device. The alarm device sends an alarm prompt to facilitate the operator to inspect the gas supply pipeline of the welding equipment, so that the welding gun can normally discharge the shielding gas when working, thereby reducing the probability of defects such as welding porosity, insufficient penetration or cracks during welding.

[0010] In some embodiments, a seal is disposed at an end of the gas flow meter, and the seal is configured to seal with an outer peripheral surface of the welding gun.

[0011] Thereby, the accuracy of the gas flow meter in detecting the flow rate of the protective gas can be improved.

[0012] In some embodiments, the welding shielding gas monitoring device also includes an identification sensor, which is used to identify whether the protective sleeve of the welding gun has fallen off. The identification sensor is communicatively connected to the controller, and the controller is used to send an alarm signal to the alarm device based on the received signal of the protective sleeve falling off.

[0013] When the protective sleeve of the welding gun falls off, only the conductive nozzle of the welding gun is inserted into the gas flow meter, causing most of the shielding gas to not flow to the gas flow meter. Therefore, the identification sensor is used to identify whether the protective sleeve of the welding gun is detached, so that the subsequent gas flow meter can measure the flow of the shielding gas to improve the accuracy of the shielding gas measurement, thereby enabling the controller to send out an alarm signal more accurately.

[0014] In some embodiments, the welding shielding gas monitoring device further includes a connecting piece, the gas flow meter is connected to the connecting piece, and the connecting piece is connected to the identification sensor.

[0015] Therefore, the installation of the gas flow meter can be facilitated by setting the connecting piece.

[0016] In some embodiments, the connector is a cylindrical structure, which is configured to be plugged into the outer circumference of the protective tube, and at least a portion of the identification sensor is installed on the inner wall of the cylindrical structure.

[0017] Compared with a structure in which the connecting piece is a rod-shaped bracket, the cylindrical structure can reduce the interference of moving objects on the identification sensor, thereby more accurately identifying whether the protective cylinder of the welding gun has fallen off.

[0018] In some embodiments, an end of the gas flow meter is sealingly connected to an end of the cylindrical structure.

[0019] Thereby, the accuracy of the gas flow meter in detecting the flow rate of the protective gas can be improved.

[0020] In some embodiments, the gas flow meter is located inside the cylindrical structure, and the end of the gas flow meter is configured to seal with the outer peripheral surface of the welding gun. Thus, the welding gun can be inserted into the cylindrical structure first, and the identification sensor first identifies whether the protective tube of the welding gun has fallen off. When the protective tube has not fallen off, the gas flow meter can detect the flow of the protector discharged from the welding gun to make the detection result more accurate.

[0021] In some embodiments, the identification sensor includes any one of a photoelectric sensor and a visual sensor. Thus, the signal difference before and after the photoelectric sensor falls off or the image recognition of the visual sensor can be used to determine whether the protective sleeve of the welding gun falls off.

[0022] In some embodiments, the alarm device includes one or more combinations of an alarm light, a speaker, and an alarm display screen.

[0023] Therefore, by using light, sound or text alarm prompts, it is possible to more directly understand the faults in the welding gun or shielding gas pipeline.

[0024] A second aspect of the present application provides a welding system, comprising the welding shielding gas monitoring device according to the first aspect, wherein the end of the welding gun is configured to be inserted into a gas flow meter.

[0025] Since the welding system includes all the technical features of the welding shielding gas monitoring device of the first aspect, the effects are the same as those of the coating device, which will not be described in detail here.

[0026] A third aspect of the present application provides a battery production system, comprising a welding system according to the second aspect.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A cross-sectional view schematically shows the connection between the welding shielding gas monitoring device and the welding gun according to the first embodiment of the present application;

[0029] Figure 2 A cross-sectional view schematically shows the connection between the welding shielding gas monitoring device and the welding gun according to the second embodiment of the present application;

[0030] Figure 3 A cross-sectional view schematically shows the connection between the welding shielding gas monitoring device and the welding gun according to the third embodiment of the present application.

[0031] The reference numerals are as follows:

[0032] 10. Gas flow meter; 20. Controller; 30. Alarm device; 40. Identification sensor; 50. Connector; 60. Welding gun; 61. Shielding tube; 62. Conductive nozzle; 63. Protective gas channel. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0039] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0040] During the welding process, the welding protection tube outside the welding gun conductive nozzle is prone to blockage, or the welding gas pipeline is blocked or damaged, resulting in insufficient flow of protective gas during welding, which makes it easy for welding defects such as welding porosity, insufficient penetration or cracks to occur during welding.

[0041] In view of this, the present application provides a welding shielding gas monitoring device, which monitors the flow rate of the shielding gas discharged from the end of the welding gun. When the detected flow rate is within a preset range, the welding gun can work normally. When the detected flow rate is not within the preset range, the controller controls the alarm device to send an alarm message to prompt that the shielding gas flow rate is abnormal, so as to facilitate the operator to overhaul, so that the welding gun can work normally. The flow detection of the welding gun can be performed before the welding gun welds the workpiece, or it can be performed after the welding gun finishes welding the workpiece, so that the welding gun can be used directly the next time it is welded. Therefore, by monitoring the gas flow rate of the welding gun through the welding shielding gas monitoring device, when the shielding gas pipeline of the welding gun or welding equipment fails, it is more convenient to repair, so that the welding gun can weld the workpiece normally, thereby reducing welding defects such as welding porosity, insufficient penetration or cracks during welding.

[0042] The welding shielding gas monitoring device of the present application is used for monitoring the flow rate of shielding gas of welding equipment.

[0043] The following examples are for convenience of description. Figure 1-Figure 3 , a welding shielding gas monitoring device of the present application is used as an example for explanation.

[0044] The welding shielding gas monitoring device includes a gas flow meter 10, a controller 20 and an alarm device 30. The gas flow meter 10 is used to detect the flow rate of the shielding gas sprayed from the welding gun 60. The controller 20 is connected to the gas flow meter 10 for receiving the signal of the gas flow meter 10. The alarm device 30 is connected to the controller 20 for receiving the alarm signal issued by the controller 20 to issue an alarm prompt.

[0045] Optionally, the controller 20 may be a PLC programmable controller 20 or a single chip microcomputer, etc.

[0046] Before using the welding gun 60, the welding gun 60 is inserted into the gas flow meter 10. The gas flow meter 10 detects the flow rate of the shielding gas ejected by the welding gun 60 when it is working. The controller 20 determines whether to send an alarm signal to the alarm device 30 by monitoring whether the flow rate of the shielding gas is normal. When the flow rate of the shielding gas is within the preset flow rate range, the controller 20 does not send an alarm signal to the alarm device 30. When the flow rate of the shielding gas is not within the preset flow rate range, the controller 20 sends an alarm signal to the alarm device 30. The alarm device 30 sends an alarm prompt to facilitate the operator to inspect the gas supply pipeline of the welding equipment, so that the welding gun 60 can normally discharge the shielding gas when working, thereby reducing the probability of defects such as welding porosity, insufficient penetration or cracks during welding.

[0047] In some embodiments, please refer to Figure 1 A sealing member is provided at the end of the gas flow meter 10 , and the sealing member is configured to seal with the outer peripheral surface of the welding gun 60 .

[0048] Optionally, the sealing member may be a sealing ring or a sealing gasket.

[0049] Optional, Figure 1 It is shown that the outer peripheral surface of the welding gun 60 is connected with a flange, and the end of the gas flow meter 10 is a flange. When the welding gun 60 is inserted into the gas flow meter 10, the flange of the gas flow meter 10 is sealed and matched with the flange on the outer peripheral surface of the welding gun 60. Specifically, a sealing ring can be provided at the end of the gas flow meter 10, or a sealing layer can be coated on the end of the gas flow meter 10 or the flange end face of the outer peripheral surface of the welding gun 60. The sealing of the sealing layer can reduce the amount of leakage during the detection process of the gas flow meter 10.

[0050] Thereby, the accuracy of the gas flow meter 10 in detecting the flow rate of the protective gas can be improved.

[0051] In some embodiments, please refer to Figure 2 The welding shielding gas monitoring device also includes an identification sensor 40, which is used to identify whether the protective tube 61 of the welding gun 60 has fallen off. The identification sensor 40 is communicatively connected with the controller 20, and the controller 20 is used to send an alarm signal to the alarm device 30 according to the received signal that the protective tube 61 has fallen off.

[0052] Optionally, the welding protective gas monitoring device also includes a workbench, a frame is provided on the workbench, the identification sensor 40 is installed on the frame, one end of the gas flow meter 10 is set upward, an exhaust hole is provided on the top of the workbench, and the other end of the gas flow meter 10 is connected to the exhaust hole. When the welding is inserted into the gas flow meter 10, the protective tube 61 of the welding gun 60 can be set within the identifiable range of the detection end of the identification sensor 40.

[0053] Optionally, the recognition distance of the recognition sensor 40 is less than or equal to 10 mm and greater than 0, which can reduce the probability of the recognition sensor 40 misidentifying other objects.

[0054] When the protective sleeve 61 of the welding gun 60 falls off, only the conductive nozzle 62 of the welding gun 60 is inserted into the gas flow meter 10, causing most of the shielding gas not to flow to the gas flow meter 10. Therefore, the identification sensor 40 identifies whether the protective sleeve 61 of the welding gun 60 is detached, so that the subsequent gas flow meter 10 can measure the flow of the shielding gas to improve the accuracy of the shielding gas measurement, thereby enabling the controller 20 to send an alarm signal more accurately.

[0055] In some embodiments, please refer to Figure 2 and Figure 3 The welding shielding gas monitoring device also includes a connecting piece 50 , the gas flow meter 10 is connected to the connecting piece 50 , and the connecting piece 50 is connected to the identification sensor 40 .

[0056] Figure 2 and Figure 3 Schematic diagrams showing that the connecting member 50 is a cylindrical structure are respectively shown.

[0057] The connecting member 50 may be, but is not limited to, a frame, a connecting plate, or a cylindrical structure.

[0058] The connection between the gas flow meter 10 and the connecting piece 50 includes, but is not limited to, flange connection, welding or bolt connection, etc.

[0059] The connection between the connector 50 and the identification sensor 40 may be, but is not limited to, a threaded connection or a bolted connection.

[0060] Therefore, the installation of the gas flow meter 10 can be facilitated by the provision of the connecting piece 50 .

[0061] In some embodiments, please refer to Figure 2 and Figure 3 The connecting member 50 is a cylindrical structure, which is configured to be plugged into the outer peripheral side of the protective tube 61, and the identification sensor 40 is installed on the side wall of the cylindrical structure.

[0062] Specifically, the side wall of the cylindrical structure is provided with a mounting hole, the mounting hole passes through the inner cavity of the cylindrical structure, and the identification sensor 40 can be installed in the mounting hole. Exemplarily, the outer surface of the identification sensor 40 is formed with an external thread, the external thread is inserted into the mounting hole, and a nut is threadedly connected to the external thread, and the nut fixes the identification sensor 40 on the side wall of the cylindrical structure, and the detection end of the identification sensor 40 can be set in the cylindrical structure.

[0063] Compared with the structure in which the connecting member 50 is a rod-shaped bracket, the cylindrical structure can reduce the interference of moving objects on the identification sensor 40, so that it can more accurately identify whether the protective tube 61 of the welding gun 60 falls off.

[0064] In some embodiments, please refer to Figure 3 , the end of the gas flow meter 10 is sealed and connected to the end of the cylindrical structure.

[0065] Specifically, the end of the gas flow meter 10 can be sealed and connected to the end of the cylindrical structure by welding, or by a flange. When the end of the gas flow meter 10 and the end of the cylindrical structure are sealed and connected by a flange, a sealing ring is provided on the flange surface between the two. The sealing ring can be a rubber sealing ring, and the rubber sealing ring is arranged around the gas inlet port of the gas flow meter 10.

[0066] Thereby, the accuracy of the gas flow meter 10 in detecting the flow rate of the protective gas can be improved.

[0067] In some embodiments, please refer to Figure 2 The gas flow meter 10 is located inside the cylindrical structure, and the end of the gas flow meter 10 is configured to seal and cooperate with the outer peripheral surface of the welding gun 60.

[0068] Optionally, the outer peripheral surface of the welding gun 60 (the outer peripheral surface of the protective tube 61) is sleeved with a flange, the flange is connected to the welding gun 60, the end of the gas flow meter 10 is a flange structure, and the welding gun 60 is sealed and connected to the flange structure of the gas flow meter 10 through the flange. Exemplarily, a sealing ring or a sealing layer is provided between the matching surfaces of the flange of the welding gun 60 and the flange structure of the gas flow meter 10, and the material of the sealing ring or the sealing layer can be rubber or silicone.

[0069] Thus, the welding gun 60 can be inserted into the cylindrical structure first, and the identification sensor 40 first identifies whether the protective tube 61 of the welding gun 60 has fallen off. When the protective tube 61 has not fallen off, the gas flow meter 10 can detect the flow of the protector discharged from the welding gun 60 to make the detection result more accurate.

[0070] In some embodiments, the recognition sensor 40 includes any one of a photoelectric sensor and a visual sensor.

[0071] Exemplarily, the identification sensor 40 can be a visual sensor, which can use image recognition technology to identify whether the protective sleeve 61 of the welding gun 60 has fallen off. When the welding gun 60 is plugged into the gas flow meter 10, the visual sensor can identify whether the protective sleeve 61 of the welding gun 60 has fallen off based on image recognition technology. When the protective sleeve 61 has not fallen off, the controller 20 does not send an alarm signal to the alarm device 30; otherwise, it sends an alarm signal to the alarm device 30.

[0072] Therefore, whether the protective tube 61 of the welding gun 60 has fallen off can be determined by the signal difference before and after the falling off of the photoelectric sensor or the image recognition of the visual sensor.

[0073] In some embodiments, the alarm device 30 includes one or more combinations of an alarm light, a speaker, and an alarm display screen.

[0074] Therefore, by using light, sound or text alarm prompts, it is possible to more directly understand the faults in the welding gun 60 or the shielding gas pipeline.

[0075] For the convenience of description, the following embodiments are described by taking a welding system of the present application as an example.

[0076] The welding system includes the welding shielding gas monitoring device according to the above embodiment, and the end of the welding torch 60 is configured to be inserted into the gas flow meter 10 .

[0077] Specifically, the welding gun 60 includes a protective tube 61 and a conductive nozzle 62. The conductive nozzle 62 is disposed inside the protective tube 61, and the conductive nozzle 62 is spaced apart from the welding gun 60 to form a protective gas channel 63, and the protective gas is discharged from the end of the welding gun 60.

[0078] Since the welding system includes all the technical features of the welding shielding gas monitoring device of the above embodiment, the effects are the same as those of the above coating device, which will not be described in detail here.

[0079] For the convenience of description, the following embodiments are described by taking a battery production system of the present application as an example.

[0080] The battery production system includes a welding system according to the above embodiment.

[0081] The welding system can be used for welding but is not limited to welding between the battery shell and the end cover, welding of the battery box for vehicles, etc.

[0082] In an alternative embodiment of the welding shielding gas monitoring device, please refer to Figure 2The welding shielding gas monitoring device includes a gas flow meter 10, a controller 20, a connector 50, an identification sensor 40 and an alarm device 30. The connector 50 is a cylindrical structure, the gas flow meter 10 is located inside the cylindrical structure, the end of the gas flow meter 10 is a flange structure, and a sealing ring is provided at the end of the flange structure, and the sealing ring is used to seal with the outer peripheral surface of the welding gun. The gas flow meter 10 is used to detect the flow of the shielding gas sprayed by the welding gun 60. The identification sensor 40 is used to identify whether the protective tube 61 of the welding gun 60 falls off. The identification sensor 40 and the gas flow meter 10 are respectively connected to the controller 20 for communication. The controller 20 is used to send an alarm signal according to the received signal of the protective tube 61 falling off, and receive the signal of the gas flow meter 10. The controller 20 can be a PLC programmable controller 20. The alarm device 30 is connected to the controller 20 for communication, and the alarm device 30 is used to receive the alarm signal sent by the controller 20 to send an alarm prompt.

[0083] The connecting piece 50 is a cylindrical structure. The gas flow meter 10 is arranged in the cylindrical structure, which can make it easier for the identification sensor 40 to identify whether the protective tube 61 of the welding gun 60 is detached, thereby reducing the probability of the identification sensor 40 mistakenly identifying a gas object. At the same time, the gas flow meter 10 detects the flow of the shielding gas sprayed when the welding gun 60 is working. The controller 20 determines whether to send an alarm signal to the alarm device 30 by monitoring whether the flow of the shielding gas is normal. When the flow of the shielding gas is within the preset flow range, the controller 20 does not send an alarm signal to the alarm device 30. When the flow of the shielding gas is not within the preset flow range, the controller 20 sends an alarm signal to the alarm device 30. The alarm device 30 sends an alarm prompt, so that the operator can inspect the gas supply pipeline of the welding equipment, so that the welding gun 60 can normally discharge the shielding gas when working, thereby reducing the probability of defects such as welding porosity, insufficient penetration or cracks during welding. The above structure can make the detection result more reliable.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A welding shielding gas monitoring device, characterized in that: include: A gas flow meter, which is used to detect the flow rate of the shielding gas sprayed from the welding gun; A controller, connected to the gas flow meter for receiving a signal from the gas flow meter; The alarm device is connected to the controller for receiving the alarm signal from the controller to issue an alarm prompt.

2. The welding shielding gas monitoring device according to claim 1, characterized in that: A sealing member is provided at an end of the gas flow meter, and the sealing member is configured to be sealingly matched with an outer peripheral surface of the welding gun.

3. The welding shielding gas monitoring device according to claim 1, characterized in that: The welding protective gas monitoring device also includes an identification sensor, which is used to identify whether the protective tube of the welding gun has fallen off. The identification sensor is communicatively connected to the controller, and the controller is used to send an alarm signal to the alarm device based on the received signal that the protective tube has fallen off.

4. The welding shielding gas monitoring device according to claim 3, characterized in that: The welding shielding gas monitoring device further comprises a connecting piece, the gas flow meter is connected to the connecting piece, and the connecting piece is connected to the identification sensor.

5. The welding shielding gas monitoring device according to claim 4, characterized in that: The connecting piece is a cylindrical structure, and the cylindrical structure is configured to be plugged into the outer peripheral side of the protective tube. At least a part of the identification sensor is installed on the inner side wall of the cylindrical structure.

6. The welding shielding gas monitoring device according to claim 5, characterized in that: The end of the gas flow meter is sealed and connected to the end of the cylindrical structure.

7. The welding shielding gas monitoring device according to claim 5, characterized in that: The gas flow meter is located inside the cylindrical structure, and an end of the gas flow meter is configured to be sealed and matched with the outer peripheral surface of the welding gun.

8. The welding shielding gas monitoring device according to claim 3, characterized in that: The recognition sensor includes any one of a photoelectric sensor and a visual sensor.

9. The welding shielding gas monitoring device according to any one of claims 1 to 8, characterized in that: The alarm device includes one or more combinations of an alarm light, a loudspeaker and an alarm display screen.

10. A welding system, characterized in that: The device comprises a welding gun and a welding shielding gas monitoring device according to any one of claims 1 to 9, wherein the end of the welding gun is configured to be inserted into the gas flow meter.

11. A battery production system, characterized in that: The welding system of claim 10 is included, wherein the welding system is used for welding batteries.

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