Automatic welding system for flexible power battery module tabs

Abstract

The invention relates to the technical field of power battery module welding, and discloses a flexible power battery module tab automatic welding system, which comprises a data acquisition module, a data processing module, a power supply module and a power supply module, the data processing module is used for planning welding track points and processing tab distance data and welding track point data, the process control module is used for controlling and adjusting the tab welding process, and the motion control module is used for driving welding motion. The manual operation cost is reduced, and errors caused by manual operation are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of power battery module welding and discloses an automatic welding system for a flexible power battery module tab. Background Art

[0002] Tab welding technology is a very important part in the field of battery module production. With the improvement of industrial automation level, the current tab welding technology tends to pay more attention to quality control. By introducing automated data recording and analysis systems, real-time monitoring and feedback of welding quality can be achieved to ensure stable and reliable product quality. Tab welding technology is not only used in the field of traditional batteries, but also gradually expanded to new energy vehicles, energy storage systems and other fields to meet the needs of different industries. In general, tab welding technology is constantly innovating and developing, committed to improving production efficiency, welding quality and environmental protection level, and providing important support for the development of the battery module production industry. Some tab welding equipment on the market may have high energy consumption during operation, and the equipment and maintenance costs may also be high. Some companies have insufficient investment in tab welding automation, the complexity of welding parameters and the influence of environmental factors, and tab welding technology may have fluctuations in welding quality in actual applications, and further improve stability and consistency. It is necessary to seek solutions for energy saving and cost optimization.

[0003] For example, the present application with the existing authorization announcement number CN117444484A discloses a battery pole ear welding equipment, in which the battery cell moves linearly along the welding forward direction on the equipment, and the equipment is provided with a loading positioning area, a jig circulation area, a welding area, a gluing area and a unloading area in sequence along the battery cell welding forward direction; the loading positioning area includes a first loading positioning area and a second loading positioning area; the jig circulation area transfers the jig tray to the welding area, and the welding area performs positive pole ear welding and negative pole ear welding on the battery cells on the jig tray respectively to obtain grouped battery cells, and the jig circulation area transfers the grouped battery cells to the gluing area; the gluing area moves the grouped battery cells to the target gluing station, glues the positive pole ears and the negative pole ears of the grouped battery cells respectively, and moves the grouped battery cells after gluing to the unloading area for unloading, and the gluing area provides anti-collapse support for the middle part of the grouped battery cells when moving the grouped battery cells. The present application has high welding efficiency, high equipment welding accuracy, and can effectively improve the welding quality of battery tabs.

[0004] However, the above patents have the following problems: they can only simply weld the tabs, and the investment in automation is insufficient, resulting in low efficiency of the production line and difficulty in ensuring quality control. It is necessary to increase the application and promotion of automation technology; the application and exploration of new materials and new processes are insufficient, which affects the progress and improvement of welding technology, and the error effect is not considered in how to perform welding. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In order to solve the above technical problems, the main purpose of the present invention is to provide a flexible power battery module tab automatic welding system, comprising:

[0007] A data acquisition module, including a sensor unit for acquiring the distance between the tabs and a signal processing unit for processing the acquired signals;

[0008] The data processing module includes a lug data processing unit for processing lug distance data and a trajectory data processing unit for processing welding trajectory points;

[0009] Process control module, used to control and adjust the tab welding process;

[0010] A motion control module includes a servo motor for driving a welding gun and a servo motor driver for controlling and driving the servo motor.

[0011] As a preferred solution of the flexible power battery module tab automatic welding system of the present invention, wherein:

[0012] The sensor unit includes a laser sensor for collecting the distance between the pole lugs;

[0013] The pole ear distance includes the near end position of the pole ear distance laser sensor and the far end position of the pole ear distance laser sensor;

[0014] The near-end position is the distance between the laser sensor and the end of the pole ear of the power battery module being measured, which is the first measured end;

[0015] The remote position is the distance between the laser sensor and the pole ear of the power battery module being measured, which is the second measured end;

[0016] The distance between the first measured end and the second measured end is the measuring range;

[0017] The laser sensor emits laser light to the first measured end and the second measured end, and the reflected light is projected to the photosensitive plate. The distance to the first measured end and the distance to the second measured end are collected according to the position where the reflected light is reflected to the photosensitive plate.

[0018] As a preferred solution of the flexible power battery module tab automatic welding system of the present invention, wherein:

[0019] The signal processing unit includes a signal processing unit for processing the distance data of the first measured end and the distance data of the second measured end collected by the tab material, external factors and noise accurately;

[0020] The influence of the lug material includes the lug surface color, lug surface roughness and lug shape;

[0021] The external factors include ambient light intensity, ambient light color and ambient temperature;

[0022] The noise affects the smoothness of the light.

[0023] As a preferred solution of the flexible power battery module tab automatic welding system of the present invention, wherein:

[0024] Fitting a welding trajectory through the tab data processing unit, and filtering and smoothing the fitted welding trajectory through the trajectory data processing unit to remove burrs;

[0025] The filtering and burr removal smoothing process fits the square of the error and minimizes the error processing of the welding trajectory and the collected signal. The fitting error algorithm expression is as follows:

[0026]

[0027] Among them, G is the fitting value after fitting error, x i is the actual welding data point, x is the best welding point, k is the conventional welding error value, i is the ordinal number of 1, 2, 3, .., n is the last set of data collected and welded;

[0028] Each welding point and adjacent data points processed by the fitting error algorithm are represented by a multi-order polynomial, and the error optimization path is determined by fitting the polynomial with a minimum value, and finally the actual tab welding point is output;

[0029] All the actual tab welding points are passed through the curve by welding interpolation method;

[0030] The curve is a function found by the least square method, by which the sum of the squares of the distances between each welding point and the function curve is minimized;

[0031] The square sum of the distances between each welding point and the function curve is expressed as follows:

[0032]

[0033] Where Q(x) is the distance between each welding point and the function curve, λ is the optimal estimation coefficient of the distance value, x is the input welding point position, j is the ordinal number 1, 2, 3, ..., and n is the last value of the welding point;

[0034] If the sum of the squares of the distances between each welding point and the function curve is the minimum value, that is, the fitting error value is the optimal value, and λ is the optimal estimation coefficient;

[0035] The square sum of the distances between each welding point and the function curve is calculated in matrix form:

[0036] X·A=Q(X)

[0037] Among them, X is the matrix form of welding point position, A is the matrix form of optimal estimation coefficient, and Q(X) is the matrix form of distance value between each welding point and the function curve;

[0038] The welding point position matrix form is expressed as follows:

[0039]

[0040] Where x1 represents the solder joint position, x2 represents the next solder joint position, z represents the straight-line distance between the solder joint position and the next solder joint position, j represents the ordinal number 1, 2, 3, ..., and n represents the position of the last solder joint;

[0041] The matrix form of the best estimation coefficient is as follows:

[0042]

[0043] Among them, λ1 is the best estimation coefficient corresponding to the first solder joint position, λ2 is the best estimation coefficient corresponding to the second solder joint position, and λ n is the best estimation coefficient corresponding to the nth solder joint position;

[0044] By fitting the matrix, the distance between the welding point position and the curve is the shortest, and then the welding position is adjusted to achieve the best welding point for automatic welding.

[0045] As a preferred solution of the flexible power battery module tab automatic welding system of the present invention, wherein:

[0046] The process control module is matched with a control cabinet including a control unit, a power supply unit, a communication unit and a feedback unit;

[0047] The power supply unit supplies power to the process control module to enable the process control module to work normally;

[0048] The flexible power battery module tab to be welded is placed on the welding platform, and the optimal welding path of the flexible power battery module tab obtained by the data processing unit is input into the process control module through the communication unit, and the process control module uploads the optimal welding path to the host computer through the USB interface, and generates a welding trajectory tracking path according to the welding trajectory;

[0049] The welding trajectory tracking path is received by the control unit, and the control unit controls the motion control module to automatically weld the flexible power battery module tab module according to the welding trajectory tracking path.

[0050] As a preferred solution of the flexible power battery module tab automatic welding system of the present invention, wherein:

[0051] The motion control module includes a servo motor and a servo motor driver;

[0052] The servo motor includes an x-axis servo motor and a y-axis servo motor, and controls the servo motor welding head to align with the welding starting position, and ensures that the welding head is in good contact with the tab module. The servo motor performs welding movement on the tab module according to the welding trajectory tracking path;

[0053] The servo motor driver is used to control the servo motor to move according to the welding trajectory tracking path.

[0054] As a preferred solution of the flexible power battery module tab automatic welding system of the present invention, wherein:

[0055] The welding data of the completed tab module is collected, and the collected welding data is cleaned to remove redundant and erroneous data, and the welding monitoring model is established. The tab welding data is output in real time through the welding monitoring model, and compared with the standard tab welding data, and the data difference is fed back to the data acquisition module through the feedback unit, and finally the tab welding condition is adjusted by adjusting the welding process and welding movement.

[0056] Beneficial effects of the present invention:

[0057] The automation system of the present invention can realize continuous and efficient welding, greatly improve production efficiency, and reduce manual operation costs. The automation system can accurately control welding parameters, ensure the stability and consistency of welding quality, and reduce the impact of human factors on welding quality. The automation system can reduce errors and mistakes in human operation and improve the stability and reliability of the production line. The automation system can realize automated production, which can reduce labor costs and improve production efficiency, thereby reducing overall production costs.

[0058] The flexibly designed automation system can adapt to flexible power battery modules of different specifications and forms, improve the flexibility and applicability of the production line, and the automation system can record welding parameters and quality data in real time, facilitate monitoring and quality traceability of the production process, and provide a basis for quality control and improvement. In addition, the present invention can automatically adjust according to different materials of the tabs. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0060] Figure 1 This is a block diagram of an automatic welding system for a flexible power battery module tab of the present invention;

[0061] Figure 2 It is a fitting simulation diagram of welding points and optimal welding trajectories in the automatic welding process of a flexible power battery module tab of the present invention;

[0062] Figure 3 The topological diagram of the automatic welding system for the pole tabs of a flexible power battery module of the present invention is shown. DETAILED DESCRIPTION

[0063] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0064] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0065] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0066] Embodiment 1:

[0067] like Figure 1 As shown, a flexible power battery module tab automatic welding system includes:

[0068] A data acquisition module, including a sensor unit for acquiring the distance between the tabs and a signal processing unit for processing the acquired signals;

[0069] Wherein, the sensor unit includes a laser sensor for collecting the distance between the pole lugs;

[0070] The pole ear distance includes the near end position of the pole ear distance laser sensor and the far end position of the pole ear distance laser sensor;

[0071] The near-end position is the distance between the laser sensor and the end of the pole ear of the power battery module being measured, which is the first measured end;

[0072] The remote position is the distance between the laser sensor and the pole ear of the power battery module being measured, which is the second measured end;

[0073] The distance between the first measured end and the second measured end is the measuring range;

[0074] The laser sensor emits laser light to the first measured end and the second measured end, and the reflected light is projected to the photosensitive plate. The distance to the first measured end and the distance to the second measured end are collected according to the position where the reflected light is reflected to the photosensitive plate.

[0075] The signal processing unit includes a device for processing the distance data of the first measured end and the distance data of the second measured end collected by the material of the tab, external factors and noise accurately;

[0076] The color factor of the surface of the flexible power battery module tab. The depth and hue of the surface color of the flexible power battery module tab are interference factors for sensor measurement, which will affect the resolution of sensor detection and cause errors in sensor measurement data. If the tab of the flexible power battery module is a warm color, such as red, yellow, etc., its reflectivity is higher than that of light-colored objects such as black and blue. Although the reflectivity of black objects is not high, its resolution is relatively low. Generally speaking, the resolution of black objects is lower than that of white objects.

[0077] The surface morphology of the flexible power battery module tab surface will also affect sensor detection.

[0078] If the pole ear of the flexible power battery module is spherical, the laser will produce diffuse reflection on the spherical surface; if the surface of the pole ear of the flexible power battery module is mirror-like, it will cause mirror reflection; in addition, if the pole ear of the flexible power battery module is made of plastic or has holes on the surface, it will also cause errors in the measurement and reduce the detection accuracy of the sensor.

[0079] Surface factors of metal workpieces. When laser hits the surface of metal workpieces, diffuse reflection will occur.

[0080] Especially for the surface of metal workpieces with coatings, the reflection rate will be different, so sometimes when testing the same point, the measurement results may be different at different times. This detection error will change with the surface structure of the metal workpiece.

[0081] The data processing module includes a lug data processing unit for processing lug distance data and a trajectory data processing unit for processing welding trajectory points;

[0082] The welding trajectory is fitted by the tab data processing unit, and the fitted welding trajectory is filtered and smoothed by the trajectory data processing unit to remove burrs;

[0083] The filtering removes the burrs and smoothes the square of the fitting error and reduces it to the minimum. The welding trajectory and the collected signal are processed for error. The fitting error algorithm expression is as follows:

[0084]

[0085] Among them, G is the fitting value after fitting error, x i is the actual welding data point, x is the best welding point, k is the conventional welding error value, i is the ordinal number of 1, 2, 3, .., n is the last set of data collected and welded;

[0086] like Figure 3 As shown, each welding point and adjacent data points processed by the fitting error algorithm are represented by a multi-order polynomial, and the error optimization path is determined by fitting the polynomial at the minimum value, and finally the actual tab welding point is output;

[0087] All actual tab welding points are passed through the curve by welding interpolation method;

[0088] The curve is a function found by the least square method, through which the sum of the squares of the distances between each welding point and the function curve is minimized;

[0089] The square sum of the distances between each welding point and the function curve is expressed as follows:

[0090]

[0091] Where Q(x) is the distance between each welding point and the function curve, λ is the optimal estimation coefficient of the distance value, x is the input welding point position, j is the ordinal number 1, 2, 3, ..., and n is the last value of the welding point;

[0092] If the sum of the squares of the distances between each welding point and the function curve is the minimum, the fitting error value is the best value, and λ is the best estimation coefficient;

[0093] The square sum of the distances between each welding point and the function curve is calculated in matrix form:

[0094] X·A=Q(X)

[0095] Among them, X is the matrix form of welding point position, A is the matrix form of optimal estimation coefficient, and Q(X) is the matrix form of distance value between each welding point and the function curve;

[0096] The welding point position matrix form is as follows:

[0097]

[0098] Where x1 represents the solder joint position, x2 represents the next solder joint position, z represents the straight-line distance between the solder joint position and the next solder joint position, j represents the ordinal number 1, 2, 3, ..., and n represents the position of the last solder joint;

[0099] The matrix form of the best estimate coefficient is as follows:

[0100]

[0101] Among them, λ1 is the best estimation coefficient corresponding to the first solder joint position, λ2 is the best estimation coefficient corresponding to the second solder joint position, and λ n is the best estimation coefficient corresponding to the nth solder joint position;

[0102] The welding trajectory is smoothed and filtered to fit the welding point, which corrects the fluctuation of welding data and makes the welded tab smoother.

[0103] Embodiment 2:

[0104] like Figure 1 As shown, a process control module is used to control and adjust the tab welding process;

[0105] Among them, the automatic welding of flexible power battery tabs mainly uses a host PC, a two-dimensional motion experimental platform, a line laser sensor, a PLC controller and its control cabinet;

[0106] The PLC is Siemens Sarmt-300, which supports communication with the host computer;

[0107] The control cabinet includes power module, control module and communication module;

[0108] Further, the process control module is matched with a control cabinet including a control unit, a power supply unit, a communication unit and a feedback unit;

[0109] The power supply unit supplies power to the process control module to enable the process control module to work normally;

[0110] The flexible power battery module tab to be welded is placed on the welding platform, and the optimal welding path of the flexible power battery module tab obtained by the data processing unit is input into the process control module through the communication unit. The process control module uploads the optimal welding path to the host computer through the USB interface, and generates a welding trajectory tracking path according to the welding trajectory;

[0111] The welding trajectory tracking path is received by the control unit, and the control unit controls the motion control module to automatically weld the flexible power battery module tab module according to the welding trajectory tracking path.

[0112] A motion control module includes a servo motor for driving a welding gun and a servo motor driver for controlling and driving the servo motor.

[0113] The motion control module includes a servo motor and a servo motor driver;

[0114] The servo motor includes an x-axis servo motor and a y-axis servo motor, which controls the servo motor welding head to align with the welding starting position, ensures that the welding head is in good contact with the tab module, and the servo motor performs welding movement on the tab module according to the welding trajectory tracking path;

[0115] The servo motor driver is used to control the servo motor to move according to the welding trajectory tracking path.

[0116] The welding data of the completed tab module is collected, and the collected welding data is cleaned to remove redundant and erroneous data, and the welding monitoring model is established. The tab welding data is output in real time through the welding monitoring model, and compared with the standard tab welding data, and the data difference is fed back to the data acquisition module through the feedback unit, and finally the tab welding condition is adjusted by adjusting the welding process and welding movement.

[0117] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only two embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc., without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0118] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0119] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0120] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A flexible power battery module tab automatic welding system, comprising: A data acquisition module, including a sensor unit for acquiring the distance between the tabs and a signal processing unit for processing the acquired signals; The data processing module includes a lug data processing unit for processing lug distance data and a trajectory data processing unit for processing welding trajectory points; Process control module, used to control and adjust the tab welding process; a motion control module, including a servo motor for driving the welding gun, and a servo motor driver for controlling and driving the servo motor; The welding monitoring model includes a welding monitoring model for monitoring the welding condition of the tab and a feedback unit for feedback adjustment of the welding process.

2. The flexible power battery module tab automatic welding system according to claim 1, characterized in that: The sensor unit includes a laser sensor for collecting the distance between the pole lugs; The pole ear distance includes the near end position of the pole ear distance laser sensor and the far end position of the pole ear distance laser sensor; The near-end position is the distance between the laser sensor and the end of the pole ear of the power battery module being measured, which is the first measured end; The remote position is the distance between the laser sensor and the pole ear of the power battery module being measured, which is the second measured end; The distance between the first measured end and the second measured end is the measuring range; The laser sensor emits laser light to the first measured end and the second measured end, and the reflected light is projected to the photosensitive plate. The distance to the first measured end and the distance to the second measured end are collected according to the position where the reflected light is reflected to the photosensitive plate.

3. The flexible power battery module tab automatic welding system according to claim 2, characterized in that: The signal processing unit includes a signal processing unit for processing the distance data of the first measured end and the distance data of the second measured end collected by the tab material, external factors and noise accurately; The influence of the lug material includes the lug surface color, lug surface roughness and lug shape; The external factors include ambient light intensity, ambient light color and ambient temperature; The noise affects the smoothness of the light.

4. The flexible power battery module tab automatic welding system according to claim 3, characterized in that: Fitting a welding trajectory through the tab data processing unit, and filtering and smoothing the fitted welding trajectory through the trajectory data processing unit to remove burrs; The filtering and burr removal smoothing process fits the square of the error and minimizes the error processing of the welding trajectory and the collected signal. The fitting error algorithm expression is as follows: Among them, G is the fitting value after fitting error, x i is the actual welding data point, x is the best welding point, k is the conventional welding error value, i is the ordinal number of 1, 2, 3, .., n is the last set of data collected and welded; Each welding point and adjacent data points processed by the fitting error algorithm are represented by a multi-order polynomial, and the error optimization path is determined by fitting the polynomial with a minimum value, and finally the actual tab welding point is output; All the actual tab welding points are passed through the curve by welding interpolation method; The curve is a function found by the least square method, and the sum of the squares of the distances between each welding point and the function curve is minimized; The square sum of the distances between each welding point and the function curve is expressed as follows: Where Q(x) is the distance between each welding point and the function curve, λ is the optimal estimation coefficient of the distance value, x is the input welding point position, j is the ordinal number 1, 2, 3, ..., and n is the last value of the welding point; If the sum of the squares of the distances between each welding point and the function curve is the minimum value, that is, the fitting error value is the optimal value, and λ is the optimal estimation coefficient; The square sum of the distances between each welding point and the function curve is calculated in matrix form: X·A=Q(X) Among them, X is the matrix form of welding point position, A is the matrix form of optimal estimation coefficient, and Q(X) is the matrix form of distance value between each welding point and the function curve; The welding point position matrix form is expressed as follows: Where x1 represents the solder joint position, x2 represents the next solder joint position, z represents the straight-line distance between the solder joint position and the next solder joint position, j represents the ordinal number 1, 2, 3, ..., and n represents the position of the last solder joint; The matrix form of the best estimation coefficient is as follows: Among them, λ1 is the best estimation coefficient corresponding to the first solder joint position, λ2 is the best estimation coefficient corresponding to the second solder joint position, and λ n is the best estimation coefficient corresponding to the nth solder joint position; By fitting the matrix, the distance between the welding point position and the curve is the shortest, and then the welding position is adjusted to achieve the best welding point for automatic welding.

5. The flexible power battery module tab automatic welding system according to claim 4, characterized in that: The process control module is matched with a control cabinet including a control unit, a power supply unit, a communication unit and a feedback unit; The power supply unit supplies power to the process control module to enable the process control module to work normally; The flexible power battery module tab to be welded is placed on the welding platform, and the optimal welding path of the flexible power battery module tab obtained by the data processing unit is input into the process control module through the communication unit, and the process control module uploads the optimal welding path to the host computer through the USB interface, and generates a welding trajectory tracking path according to the welding trajectory; The welding trajectory tracking path is received by the control unit, and the control unit controls the motion control module to automatically weld the flexible power battery module tab module according to the welding trajectory tracking path.

6. The flexible power battery module tab automatic welding system according to claim 5, characterized in that: The motion control module includes a servo motor and a servo motor driver; The servo motor includes an x-axis servo motor and a y-axis servo motor, and controls the servo motor welding head to align with the welding starting position, and ensures that the welding head is in good contact with the tab module. The servo motor performs welding movement on the tab module according to the welding trajectory tracking path; The servo motor driver is used to control the servo motor to move according to the welding trajectory tracking path.

7. The flexible power battery module tab automatic welding system according to claim 6, characterized in that: The welding data of the completed tab module is collected, and the collected welding data is cleaned to remove redundant and erroneous data, and the welding monitoring model is established. The tab welding data is output in real time through the welding monitoring model, and compared with the standard tab welding data, and the data difference is fed back to the data acquisition module through the feedback unit, and finally the tab welding condition is adjusted by adjusting the welding process and welding movement.

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