Welding device and welding system

Abstract

The utility model discloses a welding device and a welding system. The welding device comprises a welding base, and the welding base comprises a base table, a limiting assembly and a lifting assembly. The limiting assembly comprises limiting pieces, the two limiting pieces are arranged on the two opposite sides of the base table, at least one limiting piece is an adjustable limiting piece, and the adjustable limiting piece is configured to be capable of being driven so that the two limiting pieces can be close to or away from each other; the lifting assembly is connected with the base table and is configured to control the base table to ascend or descend. According to the welding device of the structure, the width of the placing space on the base table is adjusted through the limiting assembly, the height of the placing space on the base table is adjusted through the lifting assembly, and battery modules of different sizes can be placed on the welding base, so that the welding device can meet the welding requirements of the battery modules of various sizes, and the production efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, in particular to a welding device and a welding system. BACKGROUND

[0002] The production of battery devices requires welding devices to weld the tab of the battery module and the pad. The related technology provides a welding device, the base of which can only place battery modules of a specific size. When welding battery modules of different sizes, different bases or welding devices need to be replaced, which affects the production efficiency due to poor versatility of the welding device. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the present application provides a welding device and a welding system, which can improve the versatility of the welding base by setting a limiting component and a lifting component on the welding base, and facilitate the welding device to weld battery modules of different sizes.

[0004] To solve the above technical problems, one technical solution adopted by the present application is to provide a welding device, which comprises a welding base, and the welding base comprises: a base; a limiting component, the limiting component comprises limiting pieces, two limiting pieces are arranged on opposite sides of the base, and at least one limiting piece is an adjustable limiting piece, the adjustable limiting piece is configured to be driven to make the two limiting pieces close or away from each other; a lifting component, the lifting component is connected to the base, and the lifting component is configured to control the base to rise or fall.

[0005] The welding device with the above structure adjusts the width of the placement space on the base through the limiting component, adjusts the height of the placement space on the base through the lifting component, and the welding base can place battery modules of different sizes, so that the welding device can meet the welding needs of battery modules of various sizes and improve the production efficiency.

[0006] In one possible implementation, the limiting component further comprises: a first driving device connected to the adjustable limiting piece.

[0007] The width of the placement space is adjusted by driving the adjustable limiting piece through the first driving device, which can make the width adjustment more labor-saving.

[0008] In one possible implementation, the first driving device is a pneumatic cylinder driving device.

[0009] As described above, the pneumatic cylinder driving device can adjust the driving distance of the adjustable limiting piece by controlling the gas flow, so that the width adjustment of the placement space is more accurate.

[0010] In one possible implementation, the cylinder driving device comprises: a compressed gas supply device; a pressure regulating device connected to the compressed gas supply device; a switch assembly connected to the pressure regulating device; and a cylinder connected to the switch assembly, wherein an elastic member is arranged in the cylinder, and the elastic member is connected to the adjustable stopper, so that when the switch assembly is opened, compressed gas enters the cylinder and presses the elastic member to drive the adjustable stopper, and when the switch assembly is closed, the elastic member drives the adjustable stopper to reset.

[0011] The cylinder driving device has the advantages that the pressure of the compressed gas is controlled by the pressure regulating device, the movement of the adjustable stopper driven by the elastic member can be controlled, the adjustable stopper can be reset by the elastic member when the switch assembly is closed, and the width of the placement space can be accurately adjusted.

[0012] In one possible implementation, the elastic member is a spring.

[0013] The cylinder driving device has the advantage that the adjustable stopper can be reset by the spring when the switch assembly is closed.

[0014] In one possible implementation, the switch assembly is an electromagnetic valve.

[0015] The switch assembly is arranged as an electromagnetic valve, the state of the cylinder driving device can be controlled by an electronic signal, and the electromagnetic valve is fast and accurate in response.

[0016] In one possible implementation, the pressure regulating device is a proportional valve, and the welding base further comprises a controller connected to the proportional valve, wherein the controller is configured to control the opening degree of the proportional valve.

[0017] The pressure regulating device is arranged as a proportional valve, the opening degree of the proportional valve can be remotely controlled by an electronic signal, the proportional valve has the advantages of smooth and accurate opening degree change, and the accuracy of the control of the pressure of the compressed gas in the cylinder can be improved.

[0018] In one possible implementation, the stopper assembly further comprises a guide member, and the adjustable stopper is slidingly connected to the guide member.

[0019] The guide member has the functions of fixing the adjustable stopper and guiding the movement of the adjustable stopper.

[0020] In one possible implementation, the guide member is a guide rod, and the adjustable stopper has a sliding through slot, and the adjustable stopper is arranged on the guide rod through the sliding through slot.

[0021] The adjustable stopper is slidingly connected to the guide rod through the sliding through slot.

[0022] In a possible implementation, the welding base further comprises a first sensor connected to the controller, the first sensor being configured to acquire a distance between the battery module on the base and the adjustable stopper, and the controller being configured to control the opening degree of the proportional valve based on the distance.

[0023] The first sensor is configured to monitor the distance between the battery module on the base and the adjustable stopper in real time, and provide monitoring feedback, and the controller is configured to automatically control the movement of the adjustable stopper according to the monitoring feedback.

[0024] In a possible implementation, the lifting assembly comprises a mounting seat on which a knob is arranged, and a conveyor connected to the base, the knob being connected to the conveyor through a transmission member, and the conveyor being configured to be driven to rise or fall by the transmission member.

[0025] The knob can be manually rotated to drive the conveyor to control the lifting of the base.

[0026] In a possible implementation, the transmission member is a gear.

[0027] The gear is engaged with the knob and the conveyor respectively, and the knob can drive the conveyor.

[0028] In a possible implementation, the lifting assembly further comprises a second driving device connected to the gear, and the second driving device is further connected to the controller, and the welding base further comprises a second sensor connected to the controller, the second sensor being configured to acquire a height to which the base needs to be lifted or lowered, and the controller being configured to control the rotation of the gear according to the height.

[0029] The second sensor is configured to monitor the distance to which the base needs to be lifted or lowered, the controller is configured to calculate the number of rotations of the gear according to the monitored distance to which the base needs to be lifted or lowered, and the controller is configured to control the rotation of the gear based on the calculated number of rotations, so as to accurately and automatically control the lifting and lowering of the base.

[0030] In a possible implementation, the base is a stainless steel base.

[0031] The stainless steel base can improve the stability of the welding base.

[0032] To solve the above technical problems, another technical solution adopted by the present application is to provide a welding system, which comprises a welding device.

[0033] The aforementioned welding system uses a limiting component to adjust the width of the space on the base and a lifting component to adjust the height of the space on the base. The welding base can hold battery modules of different sizes, thus the welding system can meet the welding requirements of battery modules of various sizes and improve production efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a structural schematic diagram of the welding base in a welding apparatus according to some embodiments;

[0036] Figure 2 for Figure 1 A schematic diagram of the first embodiment of the first driving device in the welding base;

[0037] Figure 3 for Figure 1 A schematic diagram of the second embodiment of the first driving device in the welding base;

[0038] Figure 4 for Figure 1 A schematic diagram of the lifting assembly in the welding base;

[0039] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the lifting assembly.

[0040] Among them, 100 is the welding base; 10 is the base; 21 is the limiting component; 22 is the first driving device; 221 is the compressed air supply device; 222 is the switch assembly; 2221 is the first solenoid valve; 2222 is the second solenoid valve; 223 is the cylinder; 2231 is the elastic component; 224 is the pressure regulating device; 23 is the guide component; 30 is the lifting assembly; 31 is the mounting base; 32 is the conveyor belt; 33 is the transmission component; and 34 is the actuating component. Detailed Implementation

[0041] The embodiments of the technical solution of this application will be described in detail below. The following embodiments are only used to illustrate the technical solution of this application more clearly, and are therefore only examples, and should not be used to limit the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise noted, the terms "including" and "comprising" are open-ended and do not exclude the presence of unrecited elements or limitations.

[0043] 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, unless otherwise explicitly and specifically limited, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0044] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] 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, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0046] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] At present, from the development of market situation, the use of battery is more and more widely, not only the battery is applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment and aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0049] Among them, the production of battery device needs to weld the tab of battery module and the bar sheet through the welding device. Among them, the base of the existing welding device can only place the battery module of a specific size, the welding device has poor universality, which affects the production efficiency.

[0050] Based on the above consideration, in order to solve the technical problem that the welding device has poor universality and affects the production efficiency in the prior art, the present application provides a welding device and a welding system. The welding device adjusts the width of the placement space on the base through the limiting assembly, and adjusts the height of the placement space on the base through the lifting assembly, so as to improve the universality of the welding device.

[0051] For example, please refer to Figure 1 , Figure 1 The structure diagram of the welding base in the welding device according to some embodiments.

[0052] In some embodiments, the welding device (not shown) comprises a welding base 100. The welding base 100 comprises a base 10, a limiting assembly (not shown) and a lifting assembly 30. The limiting assembly comprises limiting pieces 21, two limiting pieces 21 are arranged on opposite sides of the base 10, and at least one limiting piece 21 is an adjustable limiting piece (not shown). The adjustable limiting piece is configured to be driven to make the two limiting pieces 21 close or away. The lifting assembly 30 is connected to the base 10, and the lifting assembly 30 is configured to control the base 10 to rise or fall.

[0053] The welding base 100 is a structure for supporting and positioning the battery module in the welding device. The base 10 has a bearing surface, and the base 10 is used to place the battery module, and the base 10 can be a plate structure or a block structure. In the embodiment, the base 10 is a rectangular body. In some other embodiments, the base 10 can also be a cylindrical body, an irregular polygonal body, etc. The limiting assembly is used to adjust the width of the placement space on the base 10. In the embodiment, the limiting member 21 is a rectangular plate, and in some other embodiments, the limiting member 21 can also be a plate or a block of other shapes. When a battery module with a smaller welding width is needed, the adjustable limiting member can be driven to make the two limiting members 21 close to each other, so that the width of the placement space becomes smaller. When a battery module with a larger welding width is needed, the adjustable limiting member can be driven to make the two limiting members 21 move away from each other, so that the width of the placement space becomes larger. In addition, in the embodiment, the two limiting members 21 are arranged at intervals with the base 10, and the two limiting members 21 are arranged at intervals on both sides of the base 10. When the adjustable limiting member is driven to move close to or away from the base 10. In some other embodiments, the two limiting members 21 can be arranged on the bearing surface of the base 10, and the adjustable limiting member is driven to move on the bearing surface. The lifting assembly 30 is used to control the lifting or lowering of the base 10, and in the embodiment, the base 10 is fixed on the lifting assembly 30. When a battery module with a smaller welding height is needed, the base 10 can be lifted by the lifting assembly 30 to make the height of the placement space smaller. When a battery module with a larger welding height is needed, the base 10 can be lowered by the lifting assembly 30 to make the height of the placement space larger. In addition, in the embodiment, both of the two limiting members 21 are adjustable limiting members, and when the width of the placement space is adjusted, both of the two adjustable limiting members are driven. In some other embodiments, one of the two limiting members 21 can be an adjustable limiting member, and when the width of the placement space is adjusted, the adjustable limiting member is driven to move, and the other limiting member 21 is fixed relative to the base 10.

[0054] Through the welding device with the above structure, the width of the placement space on the base 10 can be adjusted by the limiting assembly, and the height of the placement space on the base 10 can be adjusted by the lifting assembly 30. The welding base 100 can place battery modules of different sizes, so that the welding device can meet the welding needs of battery modules of various sizes, and the production efficiency of the battery device can be improved.

[0055] Please refer to Figure 2 and Figure 3 , Figure 2 is Figure 1 the structure diagram of the first driving device in the first embodiment of the welding base; Figure 3 is Figure 1 the structure diagram of the first driving device in the second embodiment of the welding base. In some embodiments, the limiting assembly further comprises a first driving device 22 connected to the adjustable limiting member.

[0056] In the embodiment, the first driving devices 22 are cylinder driving devices, and in some other embodiments, the first driving devices 22 can also be motor driving devices, hydraulic driving devices, etc. In the embodiment, the number of the first driving devices 22 is two, and the two first driving devices 22 are respectively connected to the two adjustable limiters to respectively drive the movement of the two adjustable limiters.

[0057] As described above, the width adjustment of the placement space is performed by driving the adjustable limiters by the first driving devices 22, so that the width adjustment is more labor-saving. In addition, it is preferred that the first driving devices 22 are cylinder driving devices, and the driving distance of the adjustable limiters can be adjusted by controlling the passing amount of the compressed gas, so that the width adjustment of the placement space is more accurate.

[0058] In some embodiments, the cylinder driving device comprises: a compressed gas supply device 221. A pressure regulating device 224 connected to the compressed gas supply device 221. A switch assembly 222 connected to the pressure regulating device 224. A cylinder 223 connected to the switch assembly 222, and the cylinder 223 is provided with an elastic element 2231 connected to the adjustable limiter, so that when the switch assembly 222 is turned on, the compressed gas enters the cylinder 223 and presses the elastic element 2231 to drive the adjustable limiter. When the switch assembly 222 is turned off, the elastic element 2231 drives the adjustable limiter to reset.

[0059] Among them, the compressed gas supply device 221 is used to provide compressed gas. In the embodiment, the compressed gas supply device 221 is a gas tank, and in some other embodiments, the compressed gas supply device 221 can also provide compressed gas by setting an air compressor. The pressure regulating device 224 is used to adjust the passing amount of the compressed gas to control the pressure of the compressed gas in the cylinder 223 to change the deformation amount of the elastic element 2231, so as to realize the specific movement amount of the adjustable limiter. In the embodiment, the pressure regulating device 224 is a proportional valve, and in some other embodiments, the pressure regulating device 224 can also be a needle valve, a ball valve, etc. The switch assembly 222 is used to control the on-off of the compressed gas, when the switch assembly 222 is turned on, the compressed gas enters the cylinder 223, and the elastic element 2231 drives the adjustable limiter to move, when the switch assembly 222 is turned off, the elastic element 2231 drives the adjustable limiter to reset. In the embodiment, the switch assembly 222 is an electromagnetic valve, which can be controlled by an electronic signal to turn on and off, without manually controlling the on-off of the switch assembly 222, and the electromagnetic valve responds quickly and accurately. In addition, in the embodiment, the elastic element 2231 is a spring, and in some other embodiments, the elastic element 2231 can also be a spring piece.

[0060] The above structure controls the pressure of the compressed gas by the pressure regulating device 224, can control the moving amount of the elastic member 2231 driving the adjustable limit member, and can reset the adjustable limit member by the elastic member 2231 when the switch assembly 222 is closed, so as to realize the accurate adjustment of the width of the placement space.

[0061] In some embodiments, the switch assembly 222 includes a first electromagnetic valve 2221 and a second electromagnetic valve 2222. The compressed gas passes through the pressure regulating device 224 and the first electromagnetic valve 2221. When the first electromagnetic valve 2221 is adjusted to make the point 2 and the point 1 of the first electromagnetic valve 2221 conductive, the first electromagnetic valve 2221 is opened, and the compressed gas passes through the first electromagnetic valve 2221. When the point 2 and the point 3 of the first electromagnetic valve 2221 are made conductive, the first electromagnetic valve 2221 is closed. When the first electromagnetic valve 2221 is opened, the gas reaches the second electromagnetic valve 2222. Similarly, when the point 2 and the point 1 of the second electromagnetic valve 2222 are made conductive, the second electromagnetic valve 2222 is opened, and the compressed gas passes through the second electromagnetic valve 2222. When the point 2 and the point 3 of the second electromagnetic valve 2222 are made conductive, the second electromagnetic valve 2222 is closed. When the first electromagnetic valve 2221 and the second electromagnetic valve 2222 are both conductive, the compressed gas reaches the air cylinder 223, the compressed gas acts on the elastic member 2231 to drive the adjustable limit member, and the width of the placement space on the base 10 is adjusted. The switch assembly 222 including the first electromagnetic valve 2221 and the second electromagnetic valve 2222 can reduce the risk of misoperation of the switch assembly 222. In some other embodiments, the switch assembly 222 can also include only one electromagnetic valve.

[0062] In some embodiments, the pressure regulating device 224 is a proportional valve. The welding base 100 further includes a controller (not shown) connected to the proportional valve, and the controller is used to control the opening degree of the proportional valve.

[0063] The compressed gas device 221 is connected to the switch assembly 222 by a pipeline, and the proportional valve is arranged on the pipeline between the compressed gas device 221 and the switch assembly 222. When the opening degree of the proportional valve is controlled to be larger, the compressed gas passing through the proportional valve increases, the pressure in the air cylinder 223 increases, and the elastic member 2231 drives the adjustable limit member to be close to the other adjustable limit member. When the opening degree of the proportional valve is controlled to be smaller, the compressed gas passing through the proportional valve decreases, the pressure in the air cylinder 223 decreases, and the elastic member 2231 drives the adjustable limit member to be away from the other adjustable limit member. In this embodiment, the pressure regulating device 224 is a proportional valve, and in some other embodiments, the pressure regulating device 224 can also be a needle valve, a ball valve, etc. In addition, the pressure regulating device 224 is arranged as a proportional valve, the proportional valve can remotely control the opening degree by an electronic signal, does not need to manually control the opening degree, and the opening degree control of the proportional valve has the advantages of smooth and accurate opening degree change, can make the pressure in the air cylinder 223 change linearly, and can smoothly control the movement of the adjustable limit member.

[0064] The pressure regulating device 224 is a proportional valve, which can be remotely controlled by an electronic signal, and has the advantages of smooth and accurate opening degree change, thereby improving the accuracy of the compressed gas pressure control in the cylinder 223.

[0065] In some embodiments, the limiting assembly further comprises a guide 23, and the adjustable limiting piece is slidably connected to the guide 23. The guide 23 is a guide rod, and the adjustable limiting piece has a sliding channel, and the adjustable limiting piece is arranged on the guide rod through the sliding channel.

[0066] In this embodiment, the guide 23 is a guide rod, and both adjustable limiting pieces are arranged on the guide 23, and the extension direction of the guide rod is the connecting direction of the two adjustable limiting pieces. The number of the guide 23 is two, and the two sides of the adjustable limiting piece are slidably connected to the two guides 23. In some other embodiments, the number of the guide 23 can also be one, three or other numbers.

[0067] The guide 23 can fix the adjustable limiting piece and guide the movement of the adjustable limiting piece.

[0068] In some embodiments, the welding base 100 further comprises a first sensor (not shown), which is connected to the controller and is used to obtain the distance between the battery module on the base 10 and the adjustable limiting piece, and the controller controls the opening degree of the proportional valve based on the distance.

[0069] The first sensor can be arranged between the adjustable limiting piece and the base 10, and can be an optical sensor, an infrared sensor, a magnetic sensor or the like. After the battery module is placed on the base 10, the distance between the battery module on the base 10 and the adjustable limiting piece can be obtained by the first sensor, and the first sensor sends the obtained distance to the controller, and the controller controls the opening degree of the proportional valve based on the distance. In this embodiment, the controller is an integrated circuit chip, which has the processing capability of signals. In some other embodiments, the controller can also be a general-purpose processor, a digital signal processor, an application-specific integrated circuit or other devices that can receive and process signals and generate corresponding control electrical signals.

[0070] The first sensor is arranged to monitor the distance between the battery module on the base 10 and the adjustable limiting piece in real time, provide monitoring feedback, and the controller can automatically control the movement of the adjustable limiting piece according to the monitoring feedback.

[0071] Please refer to Figure 4 and Figure 5 , Figure 4 is Figure 1 a structural schematic view of the lifting assembly in the welding base; Figure 5 is Figure 4Cross-sectional structural diagram of the lifting assembly. In some embodiments, the lifting assembly 30 comprises a mounting base 31, a knob 34 arranged on the mounting base 31, a transmission belt 32 connected to the base 10, and a transmission member 33 connecting the knob 34 and the transmission belt 32, the transmission belt 32 being configured to be driven by the transmission member 33 to ascend or descend.

[0072] The mounting base 31 is used to fix the knob 34 and the transmission belt 32. In the present embodiment, the knob 34 is movably mounted on the mounting base 31, and the knob 34 is a rotary knob that rotates on the mounting base 31 when being actuated. In the present embodiment, the transmission member 33 is a gear, the knob 34 is engaged with the gear, and the gear is also engaged with the transmission belt 32. When the knob 34 is actuated to rotate, the knob 34 drives the transmission belt 32 to ascend or descend through the gear. The transmission belt 32 is a rigid transmission belt, which can be a stainless steel transmission belt or an aluminum alloy transmission belt, etc. In other embodiments, the knob 34 can also be a reciprocating knob, and the transmission member 33 can also be a chain or a screw rod, etc. The transmission belt 32 is driven by the transmission member 33 to ascend or descend by actuating the knob 34 to reciprocate. In addition, the transmission belt 32 is also slidably mounted on the mounting base 31, so that the mounting base 31 also plays a guiding role in the ascending and descending of the transmission belt 32. In the present embodiment, a guide rail extending in the upward and downward directions is formed on the mounting base 31, and the transmission belt 32 also has a clamping structure matched with the guide rail, and the transmission belt 32 is slidably mounted on the mounting base 31 through the clamping structure. The base 10 is fixed on the transmission belt 32.

[0073] The above structure enables the knob 34 to be manually actuated to drive the transmission belt 32 to control the ascending and descending of the base 10.

[0074] In some embodiments, the lifting assembly 30 further comprises a second driving device (not shown), the second driving device being connected to the gear, and the second driving device also being connected to a controller. The welding base 100 further comprises a second sensor connected to the controller, and the second sensor is used to obtain the height at which the base 10 needs to ascend or descend, and the controller controls the rotation of the gear according to the height.

[0075] In the embodiment, the second driving device is a motor, wherein a rotating shaft of the motor is connected with the gear, so that the gear can be driven to rotate by the knob 34 and the gear can also be driven to rotate by the motor. In some other embodiments, the second driving device can also be a cylinder driving device, a hydraulic driving device, etc. The second sensor is arranged on the base 10, and can be an optical sensor, an infrared sensor, a magnetic sensor, etc. After the battery module is placed on the base 10, the second sensor can obtain the height of the battery module on the base 10, and the second sensor sends the height of the battery module to the controller, and the controller calculates the height by which the base 10 needs to be raised or lowered according to the height of the battery module, and controls the motor to drive the gear to rotate, so that the base 10 is raised or lowered by the calculated height. In some preferred embodiments, the controller can also calculate the height by which the conveyor belt 32 is raised or lowered according to the transmission relationship between the gear and the conveyor belt 32 per rotation of the rotating shaft of the motor, so that after the controller calculates the height by which the base 10 needs to be raised or lowered according to the height of the battery module, the controller calculates the number of rotations of the rotating shaft of the motor, and the controller controls the motor to rotate by the specified number of rotations, so that the raising and lowering of the base can be accurately controlled.

[0076] As described above, the second sensor is arranged to monitor the distance by which the base 10 needs to be raised or lowered, and the controller can calculate the number of rotations of the gear according to the monitored distance by which the base 10 needs to be raised or lowered, and the controller controls the rotation of the gear based on the calculated number of rotations, so that the raising and lowering of the base 10 can be accurately and automatically controlled.

[0077] In addition, in the embodiment, the base 10 is a stainless steel base. In some other embodiments, the base 10 can also be an aluminum alloy base, a nickel alloy base, or other rigid bases. By arranging the base 10 to be the above-mentioned rigid base material, the stability of the base 10 can be improved.

[0078] The application also provides a welding system. The welding system comprises a welding device, and it should be noted that the welding device in the embodiment is the welding device described in the above-mentioned embodiments, which will not be described here.

[0079] The welding system described above adjusts the width of the placing space on the base 10 through the limiting assembly, adjusts the height of the placing space on the base 10 through the lifting assembly 30, and the welding base 100 can place battery modules of different sizes, so that the welding system can meet the welding needs of battery modules of various sizes and improve the production efficiency.

[0080] Finally, in a specific application scenario, the base of the existing welding device can only place battery modules of a specific size. The welding device of the present application includes a welding base 100, which includes a base 10, a limiting assembly, and a lifting assembly 30. The limiting assembly includes limiting members 21, which are arranged on opposite sides of the base 10. At least one limiting member 21 is an adjustable limiting member, which is configured to be driven to move the two limiting members 21 closer or farther apart. The lifting assembly 30 is connected to the base 10 and is configured to control the lifting or lowering of the base 10. The limiting assembly further includes a first driving device 22 connected to the adjustable limiting member. The first driving device 22 is a pneumatic cylinder driving device. The pneumatic cylinder driving device includes a compressed air supply device 221, a pressure regulating device 224 connected to the compressed air supply device 221, a switch assembly 222 connected to the pressure regulating device 224, and a pneumatic cylinder 223 connected to the switch assembly 222. The pneumatic cylinder 223 is provided with an elastic member 2231 connected to the adjustable limiting member. When the switch assembly 222 is turned on, compressed air enters the pneumatic cylinder 223 and presses the elastic member 2231 to drive the adjustable limiting member. When the switch assembly 222 is turned off, the elastic member 2231 drives the adjustable limiting member to reset. The elastic member 2231 is a spring. The switch assembly 222 is an electromagnetic valve. The pressure regulating device 224 is a proportional valve. The welding base 100 further includes a controller connected to the proportional valve, which is used to control the opening degree of the proportional valve. The welding base 100 further includes a first sensor connected to the controller, which is used to obtain the distance between the battery module on the base 10 and the adjustable limiting member. The controller controls the opening degree of the proportional valve based on the distance. The lifting assembly 30 includes a mounting seat 31 provided with a knob 34, and a conveyor belt 32 connected to the base 10. The knob 34 is connected to the conveyor belt 32 through a transmission member 33, and the conveyor belt 32 is configured to be driven by the transmission member 33 to rise or fall. The lifting assembly 30 further includes a second driving device connected to a gear, and the second driving device is also connected to the controller. The welding base 100 further includes a second sensor connected to the controller, which is used to obtain the height to which the base 10 needs to be lifted or lowered. The controller controls the rotation of the gear according to the height.

[0081] The above-mentioned limiting assembly adjusts the width of the space on the base 10, and the lifting assembly 30 adjusts the height of the space on the base 10. The welding base 100 can place battery modules of different sizes, so that the welding device can meet the welding needs of battery modules of various sizes and improve production efficiency.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding device, characterized in that, The welding device comprises a welding base, the welding base comprises: a base; a limiting assembly, the limiting assembly comprises two limiting members, the two limiting members are arranged on opposite sides of the base, at least one of the limiting members is an adjustable limiting member, the adjustable limiting member is configured to be driven to move the two limiting members closer or farther apart; a lifting assembly connected to the base, the lifting assembly is configured to control the base to rise or fall.

2. The welding device of claim 1, wherein, The limiting assembly further comprises: a first driving device connected to the adjustable limiting member.

3. The welding device according to claim 2, wherein the first driving device is a pneumatic cylinder driving device.

4. The welding device of claim 3, wherein, The pneumatic cylinder driving device comprises: a compressed gas supply device; a pressure regulating device connected to the compressed gas supply device; a switch assembly connected to the pressure regulating device; a pneumatic cylinder connected to the switch assembly, the pneumatic cylinder is provided with an elastic member, the elastic member is connected to the adjustable limiting member, when the switch assembly is turned on, compressed gas enters the pneumatic cylinder and presses the elastic member to drive the adjustable limiting member, when the switch assembly is turned off, the elastic member drives the adjustable limiting member to reset.

5. The welding device according to claim 4, wherein the elastic member is a spring.

6. The welding device according to claim 4, wherein the switch assembly is an electromagnetic valve.

7. The welding device according to claim 4, wherein the pressure regulating device is a proportional valve; the welding base further comprises a controller connected to the proportional valve, the controller is used to control the opening degree of the proportional valve.

8. The welding device of claim 7, wherein, The limiting assembly further comprises: a guide member, the adjustable limiting member is slidingly connected to the guide member.

9. The welding device according to claim 8, wherein the guide member is a guide rod, the adjustable limiting member has a sliding slot, the adjustable limiting member is arranged on the guide rod through the sliding slot.

10. The welding device of claim 8, wherein, The welding base further comprises: a first sensor connected to the controller, the first sensor is used to obtain the distance between the battery module on the base and the adjustable limiting member, and the controller controls the opening degree of the proportional valve based on the distance.

11. The welding device of claim 10, wherein, The lifting assembly comprises: a mounting seat provided with a knob; a conveyor belt connected to the base, the knob is connected to the conveyor belt through a transmission member, and the conveyor belt is configured to be driven by the transmission member to rise or fall.

12. The welding device according to claim 11, wherein the transmission member is a gear.

13. The welding device of claim 12, wherein, The lifting assembly further comprises: a second driving device connected to the gear, the second driving device is also connected to the controller, the welding base further comprises a second sensor connected to the controller, the second sensor is used to obtain the height that the base needs to rise or fall, and the controller controls the rotation of the gear according to the height.

14. The welding device according to claim 12, wherein the base is a stainless steel base.

15. A welding system characterized by, The welding system comprises a welding device, the welding device being a welding device according to any one of claims 1-14. The welding system comprises a welding device, the welding device being a welding device according to any one of claims 1-14.

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