Battery combination cover plate explosion-proof valve welding control method and system

Abstract

The application discloses a battery combination cover plate explosion-proof valve welding control method and system, and relates to the technical field of welding control. The method comprises the following steps: dividing a production line welding cycle into a first turnover node, a second assembly node and a third welding node, introducing a programmable gate to perform node gate programming, determining a welding controller based on dynamic positioning in a three-coordinate system, embedding the welding controller in the production line welding system, establishing a mapping connection with a front-end device of the production line, and performing production line automation driving of explosion-proof valve welding; wherein, an auxiliary welding limiting component overlaps with a welding domain of the explosion-proof valve, and welding control based on a preset welding track is performed. The technical problem of inaccurate welding process control of the battery combination cover plate explosion-proof valve in the prior art, resulting in unstable welding quality and low efficiency, is solved, and the technical effect of improving the welding quality stability and production efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding control, in particular to a battery combination cover plate explosion-proof valve welding control method and system. BACKGROUND

[0002] As a key packaging component of the battery, the battery combination cover plate undertakes the important responsibility of sealing the internal environment of the battery, ensuring the normal work of the battery, and relieving pressure and preventing explosion in extreme cases. Among them, the explosion-proof valve as a key safety component in the battery combination cover plate can quickly relieve pressure in abnormal state of the battery to prevent the battery shell from breaking, which plays an important role in the safety of the whole system. At present, in the welding production link of the explosion-proof valve of the battery combination cover plate, the traditional welding control method has many drawbacks. On the one hand, the welding process control lacks precision and flexibility, and the production line often relies on fixed welding parameters and modes, which is difficult to dynamically adjust according to the actual characteristics of battery combination cover plates and explosion-proof valves of different specifications and materials, resulting in uneven welding quality and high scrap rate. On the other hand, the degree of automation of the production line is insufficient, the coordination between the welding link and the front-end equipment of the production line is poor, and there are many manual intervention links in the production process, which not only reduces the production efficiency, but also increases the product quality risk caused by human factors. SUMMARY

[0003] The present application provides a battery combination cover plate explosion-proof valve welding control method and system, which solves the technical problem of inaccurate welding process control of the battery combination cover plate explosion-proof valve in the prior art, resulting in unstable welding quality and low efficiency.

[0004] The first aspect of the present application provides a battery combination cover plate explosion-proof valve welding control method, which comprises:

[0005] Divide the production line welding cycle into a first turning node, a second assembly node and a third welding node, introduce programmable gate control for node gate control programming, determine the welding controller based on dynamic positioning in a three-dimensional coordinate system as gate association, embed the welding controller in the production line welding system, establish a mapping connection with the front-end equipment of the production line, and perform production line automation driving of the explosion-proof valve welding; wherein, the overlap of the auxiliary welding limiting component and the welding domain of the explosion-proof valve executes the welding control based on the preset welding trajectory.

[0006] The second aspect of the present application provides a battery combination cover plate explosion-proof valve welding control system, which comprises:

[0007] The division module divides the production line welding cycle into a first turnover node, a second assembly node and a third welding node, introduces programmable gate control for node gate control programming, determines the welding controller based on dynamic positioning in a ternary coordinate system, the driving module embeds the welding controller in the production line welding system, establishes a mapping connection with the front-end equipment of the production line, and executes the production line automation driving of the explosion-proof valve welding, and the welding control module assists the overlap of the welding limiting component and the welding domain of the explosion-proof valve, and executes the welding control based on the preset welding track.

[0008] One or more technical solutions provided in the present application have at least the following technical effects or advantages:

[0009] The division module divides the production line welding cycle into a first turnover node, a second assembly node and a third welding node, introduces programmable gate control for node gate control programming, determines the welding controller based on dynamic positioning in a ternary coordinate system. The driving module embeds the welding controller in the production line welding system, establishes a mapping connection with the front-end equipment of the production line, and executes the production line automation driving of the explosion-proof valve welding. The welding control module assists the overlap of the welding limiting component and the welding domain of the explosion-proof valve, and executes the welding control based on the preset welding track. The technical problems of inaccurate process control of the battery combination cover plate explosion-proof valve welding in the prior art, resulting in unstable welding quality and low efficiency are solved. By dividing the welding cycle node, using programmable gate control and ternary coordinate system dynamic positioning to determine the welding controller and embedded deployment, production line automation driving is realized, the overlap of the auxiliary welding limiting component and the welding domain of the explosion-proof valve is precisely controlled, and the preset welding track is executed, achieving the technical effects of improving the welding quality stability and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0011] Figure 1 A battery combination cover plate explosion-proof valve welding control method flowchart provided by the embodiment of the present application;

[0012] Figure 2 A battery combination cover plate explosion-proof valve welding control system structure diagram provided by the embodiment of the present application.

[0013] Legend of the drawings: division module 11, driving module 12, welding control module 13. DETAILED DESCRIPTION

[0014] This application provides a welding control method and system for the explosion-proof valve of a battery pack cover, which solves the technical problem in the prior art where the welding process of the explosion-proof valve of the battery pack cover is not accurately controlled, resulting in unstable welding quality and low efficiency.

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0016] It should be noted that the terms "comprising" and "having" are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to these processes, methods, products, or devices.

[0017] Example 1, as Figure 1 As shown, this application provides a method for controlling the welding of an explosion-proof valve on a battery pack cover, wherein the method includes:

[0018] The production line welding cycle is divided into the first flipping node, the second assembly node, and the third welding node. Programmable gating is introduced for node gating programming, and dynamic positioning based on the three-dimensional coordinate system is used as the gating association to determine the welding controller.

[0019] In this embodiment of the application, the welding cycle of the production line is divided according to the welding process of the explosion-proof valve of the battery pack cover, and a first flipping node, a second assembly node and a third welding node are obtained. Each node represents a different stage in the welding process, and the function and task of each node are independent and have a certain order.

[0020] By introducing programmable gating technology for node gating programming, it is ensured that each node can be precisely controlled and managed according to requirements. Specifically, dynamic positioning technology based on a three-dimensional coordinate system is used to associate nodes; the three-dimensional coordinate system includes: a first coordinate system with the conveyor belt as the main body, a second coordinate system with the explosion-proof valve as the main body, and a third coordinate system with the robotic arm as the main body. Through dynamic positioning, it is ensured that all equipment and robotic arms can be accurately positioned and work in coordination when different nodes are performing tasks.

[0021] After the node gating programming is completed, the welding controller is determined according to the obtained gating association. The welding controller adjusts and controls the work of each node according to the preset control rule combined with the real-time production state, ensures the smooth progress of the entire welding process, and avoids any unexpected errors or deviations.

[0022] Further, the first flipping node is based on a first uniform driving of a first section of the conveyor belt to perform control of the first placement robot arm and the flipping assembly; the second assembly node is based on a second stepping parameter to drive a second section of the conveyor belt to perform control of the second placement robot arm; the third welding node is based on the second stepping parameter to drive a third section of the conveyor belt to perform control of the third welding robot arm and the welding limiting assembly; wherein the second stepping parameter includes a stepping distance and a stepping interval time, and the conveyor belt of the second assembly node and the third welding node is equipped with the explosion-proof valve limiting assembly.

[0023] The task of the first flipping node is to drive the conveyor belt based on the first uniform speed, and to perform cooperative control of the first placement robot arm and the flipping assembly, wherein the flipping assembly is used to flip the explosion-proof valve and accurately place it to the next workstation to ensure the position accuracy and correct direction of the explosion-proof valve.

[0024] In the second assembly node, the control system uses the second stepping parameter to drive the second section of the conveyor belt. The second stepping parameter includes a stepping distance and a stepping interval time to accurately control the movement of the conveyor belt to achieve accurate placement of the explosion-proof valve assembly. The second placement robot arm then completes the assembly work of the explosion-proof valve assembly according to the positioning of the conveyor belt.

[0025] In the third welding node, the control system continues to drive the third section of the conveyor belt based on the second stepping parameter, and performs control of the third welding robot arm and the welding limiting assembly. Among them, the welding robot arm performs welding operation on the explosion-proof valve according to the accurate control signal; the welding limiting assembly ensures the stability of the explosion-proof valve during the welding process and prevents the position from deviating. In addition, the conveyor belt between the second assembly node and the third welding node is also equipped with an explosion-proof valve limiting assembly to ensure that the explosion-proof valve does not dislocate or deviate during the entire process.

[0026] Further, the three-coordinate system includes a first coordinate system based on the conveyor belt, a second coordinate system based on the explosion-proof valve, and a third coordinate system based on the robot arm.

[0027] The first coordinate system is based on the conveyor belt and is responsible for defining the position and movement state of the conveyor belt during the welding process. The first coordinate system sets the position parameters of the conveyor belt based on the running track of the conveyor belt, and coordinates with other coordinate systems to ensure accurate positioning of the explosion-proof valve.

[0028] The second coordinate system takes the explosion-proof valve as the main body, responsible for tracking the position and movement of the explosion-proof valve itself. By defining the precise position of the explosion-proof valve in the entire production process, the second coordinate system ensures that the explosion-proof valve can accurately dock with other components in the operation of each work node, especially in the turning and assembly process, the explosion-proof valve must maintain the correct direction and position to facilitate the subsequent welding operation.

[0029] The third coordinate system takes the mechanical arm as the main body, defining the operation range and posture of the mechanical arm when performing welding tasks. The third coordinate system realizes precise welding of the explosion-proof valve through the position and angle control of the mechanical arm. Under the third coordinate system, the mechanical arm can accurately position according to the specific position of the explosion-proof valve and perform welding operations. At the same time, the operation of the mechanical arm is coordinated with the positioning of the first coordinate system and the second coordinate system to ensure the stability and welding quality of the explosion-proof valve during the welding process.

[0030] Further, the welding controller is determined, comprising:

[0031] For the first turning node, the second assembly node and the third welding node, gate programming is written to determine the welding gate array; for the time dimension, a first gate correlation rule is introduced, and for the space dimension, a second gate correlation rule is introduced, wherein the time dimension includes inter-node and intra-node, and the second gate correlation rule is a positioning rule based on a three-coordinate system; according to the first gate correlation rule and the second gate correlation rule, the welding gate array is cascaded to constitute the welding controller.

[0032] In the embodiments of the present application, for the first turning node, the second assembly node and the third welding node in the production line welding system, gate programming is performed, that is, appropriate control programs are configured for each node to ensure that the node performs tasks in sequence under certain conditions. Through accurate programming, the operation tasks of each node are associated with the required execution time and conditions, ensuring the smooth progress of the entire welding process.

[0033] According to the time dimension, a first gate correlation rule is introduced to control the time relationship between nodes. The first gate correlation rule considers the time interval between nodes and the execution time within each node, for example, after the first turning node performs the turning operation, the assembly operation of the second assembly node can start. By introducing the first gate correlation rule, the system can accurately control the start and stop time of each node, ensuring the timing accuracy of the entire welding process.

[0034] The spatial dimension relates to the relative position of nodes in space and the positioning requirements of the equipment. A second gating correlation rule is introduced according to the spatial dimension, which controls the spatial position of the equipment according to a ternary coordinate system. For example, the mechanical arm of the second assembly node must accurately place the explosion-proof valve to the predetermined position, ensuring the accuracy of the welding process. By introducing the gating correlation rule of the spatial dimension, the system can realize accurate control of the equipment in space, avoiding welding failure due to position error.

[0035] The system cascades the gating correlation rules of the time dimension and the spatial dimension to form a complete welding gating array. Through the cascaded rules, the welding controller can coordinate the operation of each node in the production line to ensure that each node performs tasks according to the correct time and spatial position.

[0036] Further, the gating in the welding controller is mapped and connected to the front end of the first flipping node, the second assembly node, and the third welding node; according to the first gating in the welding controller, the first placement mechanical arm is controlled to transfer the explosion-proof valve to a section of the transmission belt, according to the clamping slot of the flipping assembly, the explosion-proof valve is clamped and flipped; according to the first transfer mechanical arm, the explosion-proof valve is transferred from a section of the transmission belt to a section of the transmission belt.

[0037] In the embodiments of the present application, the welding controller is mapped and connected to each welding node (including the first flipping node, the second assembly node, and the third welding node) through precise gating control to ensure that each node performs operations according to the predetermined order and requirements. Specifically, the first flipping node controls the action of the first placement mechanical arm through the first gating signal in the welding controller to transfer the explosion-proof valve from the starting position to a section of the transmission belt. At this time, the first placement mechanical arm operates according to the clamping slot of the flipping assembly to accurately clamp and flip the explosion-proof valve, ensuring that the explosion-proof valve is in the correct placement position to facilitate subsequent welding operations. Then, the system transfers the explosion-proof valve from a section of the transmission belt to a section of the transmission belt through the first transfer mechanical arm. At this time, the coordination of the transmission belt and the mechanical arm ensures that the explosion-proof valve can accurately reach the next stage of the working node, preparing for subsequent assembly and welding.

[0038] In addition, throughout the process, the welding controller dynamically schedules each node according to the first gating correlation rule of the time dimension and the second gating correlation rule of the spatial dimension. Through the positioning rule based on the ternary coordinate system, the operation of each node is ensured to be accurate and error-free, meeting the strict requirements of the welding process.

[0039] Further, according to the second gating in the welding controller, the second placement mechanical arm is controlled to perform positioning and placement of the to-be-welded assembly in the explosion-proof valve, wherein the positioning is constrained by a ternary coordinate system; according to the second transfer mechanical arm, the explosion-proof valve is transferred from a section of the transmission belt to a section of the transmission belt.

[0040] The second gating signal in the welding controller is used to precisely control the action of the second placement robot, ensuring the positioning and placement of the to-be-welded assembly in the explosion-proof valve. Specifically, the second placement robot precisely controls the position of the to-be-welded assembly in the explosion-proof valve according to the positioning rules of the three-coordinate system, ensuring the alignment of the welding area and avoiding welding quality problems caused by positioning errors. At the same time, the second transfer robot is responsible for transferring the explosion-proof valve from the second section of the conveyor belt to the third section of the conveyor belt; the second transfer robot operates according to the instructions of the welding controller, ensuring the smooth transfer of the explosion-proof valve between the conveyor belts.

[0041] Further, according to the third gating in the welding controller, double-stage positioning is performed to control the third welding robot to perform welding control of the explosion-proof valve; wherein the double-stage positioning includes welding domain overlap positioning of the explosion-proof valve and the welding limiting assembly, and welding positioning of the welding domain and the third welding robot, the welding limiting assembly being a fixed assembly, positioned and constrained by the three-coordinate system.

[0042] The third gating signal in the welding controller is used to perform double-stage positioning, thereby precisely controlling the welding operation of the third welding robot on the explosion-proof valve.

[0043] The double-stage positioning includes welding domain overlap positioning of the explosion-proof valve and the welding limiting assembly, and welding positioning of the welding domain and the third welding robot. Specifically, welding domain overlap positioning of the explosion-proof valve and the welding limiting assembly is performed; the welding limiting assembly acts as a fixed assembly, which functions to limit the position of the explosion-proof valve during welding to ensure that the explosion-proof valve always maintains precise positioning within the welding area. By positioning and constraining the welding domain of the explosion-proof valve and the welding limiting assembly based on the three-coordinate system, the welding domains are precisely aligned, ensuring the overlap of the welding area and thereby avoiding mispositioning or positional deviation that may occur during welding. Secondly, welding positioning of the welding domain and the third welding robot is performed. Based on the previous positioning results, the third welding robot, on the basis of the welding domain overlap positioning of the welding limiting assembly and the explosion-proof valve, precisely calculates the position of the welding robot in the three-coordinate system to control the welding robot to position the welding tool at the correct welding point.

[0044] In this double-stage positioning process, the first step ensures the accurate alignment of the explosion-proof valve and the welding limiting assembly in space, and the second step ensures that the third welding robot can accurately complete the welding work.

[0045] The welding controller is embedded in the production line welding system and is connected to the front-end equipment of the production line to perform automatic driving of the production line for welding the explosion-proof valve.

[0046] In the embodiments of the present application, the welding controller is connected with each device of the production line in hardware and software, ensuring smooth data transmission and sharing. Through the establishment of mapping connection, the welding controller cooperates accurately with front-end devices such as conveyors, mechanical arms, welding tools and limiting components. The welding controller is responsible for adjusting and optimizing the welding process according to real-time sensor data and preset control algorithms, thereby ensuring the stability and accuracy of the welding operation.

[0047] Further, the production line automation driving for performing the welding of the explosion-proof valve includes:

[0048] Obtaining explosion-proof valve specification variables, wherein the explosion-proof valve specification variables are determined based on the alternation of production batches; determining control variables for the explosion-proof valve specification variables; updating the welding controller according to the control variables.

[0049] Preferably, based on the different characteristics of each production batch, the specification variables of the explosion-proof valve are extracted, such as the size, material type, shape, weight and other characteristics of the explosion-proof valve; according to the obtained explosion-proof valve specification variables, the welding control system needs to calculate the corresponding control variables according to these variables, including welding current, welding temperature, welding speed, welding time, positioning accuracy of the mechanical arm, etc., wherein the determination of the control variables is based on the specific specification requirements of the explosion-proof valve, for example, explosion-proof valves of different sizes and materials may require different welding parameters to ensure the welding quality. The control variables calculated by calculation will be input to update the working parameters of the welding controller. The welding controller adjusts the various devices on the production line according to these updated control variables, including the speed of the conveyor belt, the action of the mechanical arm, the parameters of the welding equipment, etc., to ensure that the welding process is accurately performed and meets the production requirements of the explosion-proof valve.

[0050] Further, after the production line automation driving for performing the welding of the explosion-proof valve, it includes:

[0051] Obtaining welding quality inspection data and mining common welding defects, wherein the common welding defects meet a preset frequency; tracing the common welding defects in the production line welding cycle to determine the defect source; and performing welding feedback control according to the defect source.

[0052] After the production line automation driving of the explosion-proof valve welding is performed, the system automatically obtains welding quality inspection data, collects quality detection information after each welding operation, such as welding strength, joint appearance, heat-affected zone, and welding defects, and comprehensively understands the welding effect. Then, the system analyzes these welding quality inspection data, digs out frequently occurring common welding defects, and identifies potential problems such as improper operation, equipment problems, or material problems according to the frequency of defects. Next, traceability analysis is performed on these common welding defects to determine the root cause of the defects; by integrating the running state of the welding equipment, the workpiece material, the operator's record, and other information, the specific link where the defect occurs is traced back. Finally, based on the traceability result, welding feedback control is performed, and by adjusting the welding parameters (such as welding current, speed, time, etc.), or repairing and calibrating the welding equipment, the welding process is optimized to avoid the recurrence of defects.

[0053] The auxiliary welding limiting component overlaps with the welding domain of the explosion-proof valve, and welding control based on a preset welding trajectory is performed.

[0054] By docking the auxiliary welding limiting component with the welding domain of the explosion-proof valve, the stable position of the explosion-proof valve during welding is ensured, and the deviation of the welding position or the displacement of the explosion-proof valve is avoided. When the system performs welding, automatic welding operation is performed according to the preset welding trajectory, and the welding trajectory is accurately planned according to the design requirements to ensure that each welding path meets the process standard.

[0055] In summary, the embodiments of the present application have at least the following technical effects:

[0056] The production line welding cycle is divided into a first turning node, a second assembly node, and a third welding node, a programmable gate is introduced for node gate programming, and a welding controller is determined based on dynamic positioning in a three-dimensional coordinate system. The welding controller is embedded in the production line welding system and is mapped and connected with the front-end equipment of the production line to perform production line automation driving of the explosion-proof valve welding. The auxiliary welding limiting component overlaps with the welding domain of the explosion-proof valve, and welding control based on a preset welding trajectory is performed. The technical problems of inaccurate welding process control of the battery combination cover plate explosion-proof valve in the prior art, resulting in unstable welding quality and low efficiency, are solved. By dividing the welding cycle nodes, using programmable gates and three-dimensional coordinate system dynamic positioning to determine the welding controller and embedded deployment, production line automation driving is achieved, the auxiliary welding limiting component and the welding domain of the explosion-proof valve are precisely controlled to overlap and perform the preset welding trajectory, and the technical effects of improving the welding quality stability and production efficiency are achieved.

[0057] Embodiment two, based on the same inventive concept as the explosion-proof valve welding control method of the battery combination cover plate in the preceding embodiments, such as Figure 2As shown, the battery combination cover plate explosion-proof valve welding control system is provided, wherein the system comprises:

[0058] The division module 11 divides the production line welding cycle into a first turnover node, a second assembly node and a third welding node, introduces programmable gate control for node gate control programming, determines the welding controller based on dynamic positioning in a ternary coordinate system, the driving module 12 embeds the welding controller in the production line welding system, establishes a mapping connection with the front-end equipment of the production line, and executes the production line automation driving of the explosion-proof valve welding; the welding control module 13 assists the welding limit component and the welding domain of the explosion-proof valve to overlap, and executes the welding control based on the preset welding track.

[0059] Further, the division module 11 is used to execute the following method:

[0060] The first turnover node controls the first placement mechanical arm and the turnover assembly based on the first uniform speed driving of a section of the conveyor belt; the second assembly node controls the second placement mechanical arm based on the second step parameter driving of a second section of the conveyor belt; the third welding node controls the third welding mechanical arm and the welding limit component based on the second step parameter driving of a third section of the conveyor belt; wherein the second step parameter includes a step distance and a step interval time, and the conveyor belt assembly of the second assembly node and the third welding node is provided with an explosion-proof valve limit component.

[0061] Further, the division module 11 is used to execute the following method:

[0062] The ternary coordinate system includes a first coordinate system taking the conveyor belt as the main body, a second coordinate system taking the explosion-proof valve as the main body, and a third coordinate system taking the mechanical arm as the main body.

[0063] Further, the division module 11 is used to execute the following method:

[0064] The first turnover node, the second assembly node and the third welding node are programmed and written, and the welding gate array is determined; the first gate association rule is introduced for the time dimension, and the second gate association rule is introduced for the space dimension, wherein the time dimension includes the inter-node and the intra-node, and the second gate association rule is the positioning rule based on the ternary coordinate system; according to the first gate association rule and the second gate association rule, the welding gate array is cascaded to constitute the welding controller.

[0065] Further, the division module 11 is used to execute the following method:

[0066] The gating in the welding controller is connected with the front end mapping of the first flipping node, the second assembly node and the third welding node; according to the first gating in the welding controller, the first placing mechanical arm is controlled to transfer the explosion-proof valve to a first transmission belt, clamp the explosion-proof valve according to the clamping groove of the flipping assembly and place the explosion-proof valve after flipping; according to the first transfer mechanical arm, the explosion-proof valve on the first transmission belt is transferred to a second transmission belt.

[0067] Further, the division module 11 is used to execute the following method:

[0068] According to the second gating in the welding controller, the second placing mechanical arm is controlled to execute the positioning and placing of the to-be-welded assembly in the explosion-proof valve, wherein the positioning is constrained by a three-coordinate system; according to the second transfer mechanical arm, the explosion-proof valve on the second transmission belt is transferred to a third transmission belt.

[0069] Further, the division module 11 is used to execute the following method:

[0070] According to the third gating in the welding controller, double-stage positioning is executed to control the third welding mechanical arm to execute the welding control of the explosion-proof valve; wherein the double-stage positioning includes the welding domain overlap positioning of the explosion-proof valve and a welding limiting assembly and the welding positioning of the welding domain and the third welding mechanical arm, the welding limiting assembly is a fixed assembly, and the positioning is constrained by a three-coordinate system.

[0071] Further, the driving module 12 is used to execute the following method:

[0072] Welding quality inspection data is acquired, and common welding defects are mined, wherein the common welding defects satisfy a preset frequency; in the production line welding cycle, the common welding defects are traced to determine a defect source; and welding feedback control is executed according to the defect source.

[0073] Further, the driving module 12 is used to execute the following method:

[0074] An explosion-proof valve specification variable is acquired, wherein the explosion-proof valve specification variable is determined based on the alternation of production batches; a control variable is determined for the explosion-proof valve specification variable; and the welding controller is updated according to the control variable.

[0075] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. The above describes a specific embodiment of the present application. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0076] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0077] The specification and drawings are only exemplary and illustrative of the present application and are to be considered within the scope of the present application. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the present application and equivalent technology, the present application is intended to include these modifications and variations.

Claims

1. A battery assembly cover plate explosion valve welding control method, characterized by, The method includes: The production line welding cycle is divided into the first flipping node, the second assembly node and the third welding node. Programmable gating is introduced to perform node gating programming. Dynamic positioning based on the three-dimensional coordinate system is used as the gating association to determine the welding controller. The welding controller is embedded in the production line welding system and a mapping connection is established with the front-end equipment of the production line to execute the production line automation drive for the welding of explosion-proof valves. Among them, the overlap between the welding area of ​​the auxiliary welding limiting component and the explosion-proof valve enables welding control based on a preset welding trajectory. The first flipping node drives a conveyor belt at a first constant speed to control the first placement robotic arm and the flipping component; the second assembly node drives a two-section conveyor belt based on a second stepping parameter to control the second placement robotic arm; the third welding node drives a three-section conveyor belt based on a second stepping parameter to control the third welding robotic arm and the welding limiting component. The second stepping parameters include stepping distance and stepping interval time, and the conveyor belts of the second assembly node and the third welding node are equipped with explosion-proof valve limiting components. The three-dimensional coordinate system includes a first coordinate system with the conveyor belt as the main body, a second coordinate system with the explosion-proof valve as the main body, and a third coordinate system with the robotic arm as the main body; The feature is that the determination of the welding controller includes: For the first flip node, the second assembly node, and the third welding node, gating programming is performed to determine the welding gating array; For the time dimension, a first gating association rule is introduced, and for the spatial dimension, a second gating association rule is introduced. The time dimension includes inter-node and intra-node relationships, and the second gating association rule is a positioning rule based on a ternary coordinate system. The welding gating array is cascaded according to the first gating association rule and the second gating association rule to form the welding controller; Establish a front-end mapping connection between the gating in the welding controller and the first flip node, the second assembly node, and the third welding node; According to the first gate control in the welding controller, the first placement robotic arm is controlled to transfer the explosion-proof valve to a transmission belt, and according to the mounting slot of the flipping component, the explosion-proof valve is mounted and flipped for placement; The explosion-proof valve is transferred from the first transfer robotic arm to the second transmission belt via a conveyor belt.

2. The battery assembly cover plate explosion valve welding control method of claim 1, wherein, According to the second gate control in the welding controller, the second placement robot arm is controlled to perform the positioning and placement of the component to be welded in the explosion-proof valve, wherein the positioning constraint is performed using a three-dimensional coordinate system; The explosion-proof valve is transferred from the second transfer robotic arm to the third transmission belt, based on the second transfer belt.

3. The battery assembly cover plate explosion valve welding control method of claim 2, wherein, Based on the third gate control in the welding controller, a two-stage positioning is performed to control the third welding robotic arm to perform welding control of the explosion-proof valve; The dual-stage positioning includes overlapping positioning of the welding domains of the explosion-proof valve and the welding limiting component, and welding positioning of the welding domain and the third welding robotic arm. The welding limiting component is a fixed component, and positioning is constrained by a three-dimensional coordinate system.

4. The battery assembly cover plate explosion valve welding control method of claim 1, wherein, After the production line for welding explosion-proof valves is automated, it includes: Obtain welding quality inspection data and identify common welding defects, wherein the common welding defects meet a preset frequency; In the production line welding cycle, the common welding defects are traced to determine the defect source; According to the defect source, welding feedback regulation is performed.

5. The battery assembly cover plate explosion valve welding control method of claim 1, wherein, The production line automation driving of the explosion-proof valve welding is performed, including: Obtaining the explosion-proof valve specification variable, wherein the explosion-proof valve specification variable is determined based on the alternation of the production batch; For the explosion-proof valve specification variable, a control variable is determined; According to the control variable, the welding controller is updated.

6. A battery assembly cover plate explosion relief valve welding control system, characterized by, A battery combination cover plate explosion-proof valve welding control method for implementing any one of claims 1-5, the system comprising: A division module: dividing the production line welding cycle into a first turning node, a second assembly node and a third welding node, introducing programmable gate control for node gate control programming, determining the welding controller based on dynamic positioning in a three-dimensional coordinate system; A driving module: embedding the welding controller in the production line welding system, establishing a mapping connection with the front-end equipment of the production line, and performing production line automation driving of the explosion-proof valve welding; A welding control module: assisting the overlap of the welding limiting component and the welding domain of the explosion-proof valve, and performing welding control based on the preset welding trajectory.

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