A battery module flexible welding method, system, device, and medium

Abstract

The application provides a battery module flexible welding method, system, equipment and medium in the technical field of battery module production, and the method comprises the following steps: step S1, a module information table of a battery module is stored in PLC in advance; step S2, a welding instruction input by a touch display screen is acquired by PLC; step S3, the welding instruction received is analyzed by PLC to obtain a module type, module data is matched from the module information table based on the module type, and a servo position is calculated based on the module data; step S4, the servo motor in the welding equipment is automatically controlled to run based on the servo position, and the position of a copper nozzle tool is automatically adjusted to change the type; step S5, a welding path is calculated based on the module data, the changed welding equipment is controlled, and the battery module is automatically welded based on the welding path. The application has the advantages that the type changing efficiency of the welding equipment and the welding quality of the battery module are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of battery module manufacturing technology, and in particular to a flexible welding method, system, equipment and medium for battery modules. Background Technology

[0002] During the production of lithium batteries, welding is required. With the continuous development of the new energy industry, the new energy vehicle manufacturing industry is also adapting to various market demands. To meet the increasing diversity of new energy vehicles, the size and specifications of battery modules are becoming increasingly complex. Welding different specifications of lithium batteries requires changing the welding equipment, specifically switching the copper nozzle tooling.

[0003] Traditionally, when changing welding equipment, the copper nozzle tooling is replaced manually, and then debugging is carried out. This not only takes a long time to change equipment, but also results in poor equipment stability, which in turn affects the output of battery modules per shift and the product qualification rate.

[0004] Therefore, how to provide a flexible welding method, system, equipment and medium for battery modules to improve the efficiency of welding equipment changeover and the welding quality of battery modules has become an urgent technical problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a flexible welding method, system, equipment and medium for battery modules, so as to improve the efficiency of welding equipment changeover and the welding quality of battery modules.

[0006] In a first aspect, the present invention provides a flexible welding method for battery modules, comprising the following steps:

[0007] Step S1: The PLC pre-stores a module information table for a battery module;

[0008] Step S2: The PLC receives the input welding command via the touch screen display.

[0009] Step S3: The PLC parses the received welding command to obtain the module type, matches the module data from the module information table based on the module type, and calculates the servo position based on the module data;

[0010] Step S4: The PLC automatically controls the servo motor in the welding equipment to operate based on the servo position, thereby automatically adjusting the position of the copper nozzle tooling for shape change.

[0011] Step S5: The PLC calculates the welding path based on the module data, controls the welding equipment after the model change, and automatically welds the battery module based on the welding path.

[0012] Further, step S1 specifically includes:

[0013] The PLC pre-stores a module information table of a battery module in a local storage medium, and the module information table is encrypted with a preset key.

[0014] The module information table stores a one-to-one correspondence between module models and module data; the module data includes at least the number of cells and the cell size.

[0015] Further, step S2 specifically includes:

[0016] The PLC is based on the Profinet network protocol and obtains welding instructions carrying the module type through a touch screen.

[0017] Further, step S3 specifically includes:

[0018] The PLC parses the received welding command to obtain the module type, decrypts the module information table using a preset key, and matches module data from the module information table based on the module type.

[0019] The PLC identifies the actual number of battery cells in the battery module inside the welding equipment using a camera. After verifying the actual number of battery cells based on the module data, it calculates the servo position based on the module data.

[0020] Secondly, the present invention provides a flexible welding system for battery modules, comprising the following modules:

[0021] The module information table storage module is used by the PLC to pre-store the module information table of a battery module;

[0022] The welding instruction input module is used by the PLC to obtain the input welding instructions through the touch screen.

[0023] The servo position calculation module is used by the PLC to parse the received welding instructions to obtain the module type, match module data from the module information table based on the module type, and calculate the servo position based on the module data.

[0024] The changeover module is used by the PLC to automatically control the servo motor in the welding equipment based on the servo position, thereby automatically adjusting the position of the copper nozzle tooling for changeover.

[0025] The welding module is used by the PLC to calculate the welding path based on the module data, control the welding equipment after the model change, and automatically weld the battery module based on the welding path.

[0026] Furthermore, the module information table storage module is specifically used for:

[0027] The PLC pre-stores a module information table of a battery module in a local storage medium, and the module information table is encrypted with a preset key.

[0028] The module information table stores a one-to-one correspondence between module models and module data; the module data includes at least the number of cells and the cell size.

[0029] Furthermore, the welding command input module is specifically used for:

[0030] The PLC is based on the Profinet network protocol and obtains welding instructions carrying the module type through a touch screen.

[0031] Furthermore, the servo position calculation module is specifically used for:

[0032] The PLC parses the received welding command to obtain the module type, decrypts the module information table using a preset key, and matches module data from the module information table based on the module type.

[0033] The PLC identifies the actual number of battery cells in the battery module inside the welding equipment using a camera. After verifying the actual number of battery cells based on the module data, it calculates the servo position based on the module data.

[0034] Thirdly, the present invention provides a flexible welding device for battery modules, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method described in the first aspect.

[0035] Fourthly, the present invention provides a flexible welding medium for battery modules, on which a computer program is stored, which, when executed by a processor, implements the method described in the first aspect.

[0036] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0037] By storing module information in a PLC, the PLC receives input welding commands via a touchscreen display, parses the commands to determine the module type, matches module data from the module information table based on the module type, calculates the servo position based on the module data, and automatically controls the servo motor in the welding equipment to operate based on the servo position. This automatically adjusts the position of the copper nozzle fixture for module changeover. The welding path is calculated based on the module data, and the welding equipment automatically welds the battery module based on the welding path. In other words, by inputting welding commands with the module type on the touchscreen display, the welding equipment can be controlled to change modules with a single click, without the need to replace the copper nozzle fixture or readjust the welding position. This improves equipment stability and ultimately greatly enhances the efficiency of module changeover and the welding quality of the battery modules.

[0038] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Figure 1 This is a flowchart of a flexible welding method for battery modules according to the present invention.

[0041] Figure 2 This is a schematic diagram of the structure of a flexible welding system for battery modules according to the present invention.

[0042] Figure 3 This is a schematic diagram of the structure of a flexible welding equipment for battery modules according to the present invention.

[0043] Figure 4 This is a schematic diagram of the structure of a flexible welding medium for a battery module according to the present invention. Detailed Implementation

[0044] This application provides a flexible welding method, system, equipment, and medium for battery modules, thereby improving the efficiency of welding equipment changeover and the welding quality of battery modules.

[0045] The technical solution in this application embodiment has the following general idea: The PLC obtains the input welding command through the touch screen, parses the welding command to obtain the module type and matches the module data from the module information table, calculates the servo position based on the module data to control the servo motor in the welding equipment to operate, and then automatically adjusts the position of the copper nozzle tooling for shape change, and calculates the welding path based on the module data to automatically weld the battery module, thereby improving the shape change efficiency of the welding equipment and the welding quality of the battery module.

[0046] Example 1

[0047] This embodiment provides a flexible welding method for battery modules, such as... Figure 1 As shown, it includes the following steps:

[0048] Step S1: The PLC pre-stores a module information table for a battery module; the preferred model of the PLC is Siemens 1511-1PNCPU;

[0049] Step S2: The PLC obtains the input welding command through the touch screen display; the preferred model of the touch screen display is the F104E from Boke.

[0050] Step S3: The PLC parses the received welding command to obtain the module type, matches the module data from the module information table based on the module type, and calculates the servo position based on the module data;

[0051] Step S4: The PLC automatically controls the servo motor in the welding equipment to operate based on the servo position, thereby automatically adjusting the position of the copper nozzle tooling for shape change.

[0052] Step S5: The PLC calculates the welding path based on the module data, controls the welding equipment after the model change, and automatically welds the battery module based on the welding path. That is, the copper nozzle is moved based on the copper nozzle pressing mechanism to perform automatic welding. The welding path includes at least the distance of each movement, the total number of movements, and the number of cell rows pressed in the last time.

[0053] This invention uses a PLC as the control center and a touch screen P (HMI) as the input device for the module type. It is equipped with a servo system (servo motor), cylinders and other actuators to form a flexible automatic welding system. The operator selects the module type through the HMI, and the PLC receives the module type and calls different parameters and programs to control the servo system, cylinders and other actuators to perform welding production of battery modules of different specifications.

[0054] Step S1 specifically involves:

[0055] The PLC pre-stores a module information table of a battery module in a local storage medium, and the module information table is encrypted with a preset key.

[0056] The module information table stores a one-to-one correspondence between module models and module data; the module data includes at least the number of cells and the cell size.

[0057] Step S2 specifically involves:

[0058] The PLC is based on the Profinet network protocol and obtains welding instructions carrying the module type through a touch screen.

[0059] Step S3 specifically involves:

[0060] The PLC parses the received welding command to obtain the module type, decrypts the module information table using a preset key, and matches module data from the module information table based on the module type.

[0061] The PLC identifies the actual number of battery cells in the battery module inside the welding equipment using a camera. After verifying the actual number of battery cells based on the module data, it calculates the servo position based on the module data. By verifying the number of battery cells, the reliability of the changeover and welding is ensured.

[0062] Example 2

[0063] This embodiment provides a flexible welding system for battery modules, such as... Figure 2 As shown, it includes the following modules:

[0064] A module information table storage module is used by the PLC to pre-store the module information table of a battery module; the preferred model of the PLC is Siemens 1511-1PNCPU.

[0065] A welding instruction input module is used by the PLC to obtain the input welding instructions through a touch screen; the preferred model of the touch screen is the BKO F104E.

[0066] The servo position calculation module is used by the PLC to parse the received welding instructions to obtain the module type, match module data from the module information table based on the module type, and calculate the servo position based on the module data.

[0067] The changeover module is used by the PLC to automatically control the servo motor in the welding equipment based on the servo position, thereby automatically adjusting the position of the copper nozzle tooling for changeover.

[0068] The welding module is used by the PLC to calculate the welding path based on the module data, control the welding equipment after the model change, and automatically weld the battery module based on the welding path. That is, the copper nozzle is controlled to move based on the copper nozzle pressing mechanism to perform automatic welding. The welding path includes at least the moving distance each time, the total number of moves, and the number of cell rows pressed in the last time.

[0069] This invention uses a PLC as the control center and a touch screen display (HMI) as the input device for the module type. It is equipped with a servo system (servo motor), cylinders and other actuators to form a flexible automatic welding system. The operator selects the module type through the HMI, and the PLC receives the module type and calls different parameters and programs to control the servo system, cylinders and other actuators to perform actions, so as to realize the welding production of battery modules of different specifications.

[0070] The module information table storage module is specifically used for:

[0071] The PLC pre-stores a module information table of a battery module in a local storage medium, and the module information table is encrypted with a preset key.

[0072] The module information table stores a one-to-one correspondence between module models and module data; the module data includes at least the number of cells and the cell size.

[0073] The welding command input module is specifically used for:

[0074] The PLC is based on the Profinet network protocol and obtains welding instructions carrying the module type through a touch screen.

[0075] The servo position calculation module is specifically used for:

[0076] The PLC parses the received welding command to obtain the module type, decrypts the module information table using a preset key, and matches module data from the module information table based on the module type.

[0077] The PLC identifies the actual number of battery cells in the battery module inside the welding equipment using a camera. After verifying the actual number of battery cells based on the module data, it calculates the servo position based on the module data. By verifying the number of battery cells, the reliability of the changeover and welding is ensured.

[0078] Based on the same inventive concept, this application provides an electronic device embodiment corresponding to Embodiment 1, as detailed in Embodiment 3.

[0079] Example 3

[0080] This embodiment provides a flexible welding device for battery modules, such as... Figure 3 As shown, it includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it can implement any of the embodiments in Example 1.

[0081] Since the electronic device described in this embodiment is the device used to implement the method in Embodiment 1 of this application, those skilled in the art can understand the specific implementation method and various variations of the electronic device in this embodiment based on the method described in Embodiment 1 of this application. Therefore, how the electronic device implements the method in the embodiment of this application will not be described in detail here. Any device used by those skilled in the art to implement the method in the embodiment of this application falls within the scope of protection of this application.

[0082] Based on the same inventive concept, this application provides a storage medium corresponding to Embodiment 1, as detailed in Embodiment 4.

[0083] Example 4

[0084] This embodiment provides a flexible welding medium for battery modules, such as... Figure 4 As shown, a computer program is stored thereon, which, when executed by a processor, can implement any of the embodiments in Example 1.

[0085] Since the storage medium described in this embodiment is the same storage medium used to implement the method in Embodiment 1 of this application, those skilled in the art can understand the specific implementation methods and various variations of the storage medium in this embodiment based on the method described in Embodiment 1 of this application. Therefore, how the storage medium implements the method in this application embodiment will not be described in detail here. Any storage medium used by those skilled in the art to implement the method in this application embodiment falls within the scope of protection of this application.

[0086] The technical solutions provided in this application embodiment have at least the following technical effects or advantages:

[0087] By storing module information in a PLC, the PLC receives input welding commands via a touchscreen display, parses the commands to determine the module type, matches module data from the module information table based on the module type, calculates the servo position based on the module data, and automatically controls the servo motor in the welding equipment to operate based on the servo position. This automatically adjusts the position of the copper nozzle fixture for module changeover. The welding path is calculated based on the module data, and the welding equipment automatically welds the battery module based on the welding path. In other words, by inputting welding commands with the module type on the touchscreen display, the welding equipment can be controlled to change modules with a single click, without the need to replace the copper nozzle fixture or readjust the welding position. This improves equipment stability and ultimately greatly enhances the efficiency of module changeover and the welding quality of the battery modules.

[0088] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0089] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0090] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0091] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0092] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A flexible welding method for battery modules, characterized in that: Includes the following steps: Step S1: The PLC pre-stores a module information table of a battery module in its local storage medium, and the module information table is encrypted with a preset key. The module information table stores a one-to-one correspondence between module models and module data; the module data includes at least the number of battery cells and the size of the battery cells; Step S2: The PLC, based on the Profinet network protocol, obtains the welding instructions carrying the module type through the touch screen. Step S3: The PLC parses the received welding command to obtain the module type, decrypts the module information table using a preset key, and matches module data from the module information table based on the module type. The PLC identifies the actual number of battery cells in the battery module inside the welding equipment using a camera. After verifying the actual number of battery cells based on the module data, it calculates the servo position based on the module data. Step S4: The PLC automatically controls the servo motor in the welding equipment to operate based on the servo position, thereby automatically adjusting the position of the copper nozzle tooling for shape change. Step S5: The PLC calculates the welding path based on the module data, controls the welding equipment after the model change, and automatically welds the battery module based on the welding path.

2. A flexible welding system for battery modules, characterized in that: Includes the following modules: The module information table storage module is used by the PLC to pre-store a module information table of a battery module in a local storage medium, and the module information table is encrypted with a preset key. The module information table stores a one-to-one correspondence between module models and module data; the module data includes at least the number of battery cells and the size of the battery cells; The welding instruction input module is used by the PLC to obtain welding instructions carrying module type via a touch screen based on the Profinet network protocol. The servo position calculation module is used by the PLC to parse the received welding instructions to obtain the module type, decrypt the module information table using a preset key, and match module data from the module information table based on the module type. The PLC identifies the actual number of battery cells in the battery module inside the welding equipment using a camera. After verifying the actual number of battery cells based on the module data, it calculates the servo position based on the module data. The changeover module is used by the PLC to automatically control the servo motor in the welding equipment based on the servo position, thereby automatically adjusting the position of the copper nozzle tooling for changeover. The welding module is used by the PLC to calculate the welding path based on the module data, control the welding equipment after the model change, and automatically weld the battery module based on the welding path.

3. A flexible welding device for battery modules, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method as described in claim 1.

4. A flexible welding medium for battery modules, wherein a computer program is stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in claim 1.

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