CN-121113665-B - Tab cracking early warning system and method

CN121113665BCN 121113665 BCN121113665 BCN 121113665BCN-121113665-B

Abstract

The invention belongs to the technical field of industrial control, and discloses a tab cracking early warning system and a tab cracking early warning method. The system comprises an upper computer, control equipment and a reference piece, wherein the control equipment is used for controlling a processing station to process the reference piece and record working parameters of the control equipment, and the upper computer is used for screening tension data, determining tension abnormal points and determining early warning results according to the working parameters of the control equipment and the tension abnormal points. By simulating the actual processing condition of the product, the problem in the processing process is found from the view angle of the product, the tension data generated on the product in the production process is read, the tension data in the production process is monitored, and whether the tension exceeds the limit is judged. Judging whether the production process has the risk of cracking the product, and improving the accuracy and the comprehensiveness of crack risk detection.

Inventors

HU DIANGANG
ZHANG XUAN
ZHENG XIAOYU
LIU CHANG
WU YIDONG
WANG XUMING
WANG TENGTENG

Assignees

宁德时代新能源科技股份有限公司
宁德时代润智软件科技有限公司

Dates

Publication Date: 20260512
Application Date: 20251117

Claims (14)

1. The utility model provides a tab fracture early warning system which characterized in that, the system includes host computer, control device and benchmark spare, host computer and control device communication connection, the host computer is equipped with communication interface, communication interface is used for establishing communication link with the benchmark spare, be equipped with test portion on the benchmark spare, the system includes: the control equipment is used for controlling the processing station to process the reference piece and recording the working parameters of the control equipment; the reference piece is used for recording tension data of the test part; the upper computer is used for acquiring working parameters of the control equipment and tension data of the test part; the upper computer is used for screening the tension data, determining a tension abnormal point and determining an early warning result according to the working parameters of the control equipment and the tension abnormal point; The upper computer is used for inquiring the working parameters of the control equipment according to the abnormal tension points to obtain working condition information corresponding to the abnormal tension points, and the time stamps corresponding to the abnormal tension points are in one-to-one correspondence with the working time stamps corresponding to the working condition information.
2. The system of claim 1, wherein the control device further comprises an identification acquisition device; The identification acquisition device is used for detecting the identification information of the reference piece and generating a trigger signal according to the identification information; the control device is used for responding to the trigger signal and generating a time reference point; the control equipment is used for recording the working condition information of the processing station and generating a working time stamp corresponding to the working condition information according to the time reference point; The control equipment is used for generating working parameters of the control equipment according to the working condition information of the processing stations and the working time stamp corresponding to the working condition information.
3. The system of claim 1, wherein the reference member further comprises a sensor, the test portion being secured to the sensor; the sensor is used for detecting tension data received by the test part.
4. The system of claim 3, wherein the sensor is a three-axis force sensor, the reference member, and further comprising a controller; the sensor is used for detecting orthogonal axial force components received by the test part, and the orthogonal axial force components are characterized by three axial components orthogonal to each other in a space rectangular coordinate system; And the controller is used for carrying out moment synthesis on the orthogonal axial stress components to generate space resultant force, and generating tension data of the test part according to the orthogonal axial stress components and the space resultant force.
5. The system of claim 3, wherein the sensor is a three-axis force sensor; the sensor is used for detecting orthogonal axial force components received by the test part, and the orthogonal axial force components are characterized by three axial components orthogonal to each other in a space rectangular coordinate system; And the upper computer is used for carrying out moment synthesis on the orthogonal axial stress components to generate space resultant force, and generating tension data of the test part according to the orthogonal axial stress components and the space resultant force.
6. The system of claim 1, wherein the communication interface comprises a wireless communication interface; the wireless communication interface is used for establishing a wireless communication link with the reference piece.
7. The system of claim 1, wherein the communication interface further comprises a wired connection interface; The wired connection interface is used for establishing a wired communication link under the condition that the processing station finishes processing the reference piece.
8. The utility model provides a pole ear fracture early warning method which is characterized in that, the method is applied to the host computer, host computer and control equipment communication connection, control equipment is used for controlling the processing station, the host computer is equipped with communication interface, communication interface is used for establishing communication link with the benchmark spare, be equipped with test portion on the benchmark spare, the benchmark spare is used for gathering the pulling force data of benchmark spare at test portion, pole ear fracture early warning method includes: acquiring working parameters of the control equipment; screening the tension data to determine tension abnormal points; determining an early warning result according to the working parameters of the control equipment and the abnormal points of the tension; The early warning result is determined according to the working parameters of the control equipment and the abnormal points of the tension, and the early warning method comprises the following steps: Determining working condition information of the processing station and a working time stamp corresponding to the working condition information according to the working parameters of the control equipment; determining a timestamp corresponding to the abnormal tension point according to the abnormal tension point; Matching the timestamp corresponding to the abnormal tension point with the working timestamp corresponding to the processing station, and determining the mapping between the abnormal tension point and the working condition information; and determining an early warning result according to the mapping of the tension abnormal point and the working condition information.
9. The method of claim 8, wherein said screening the tension data to determine tension outliers comprises: Screening the tension data, and judging a time node of the tension data, in which the tension is not in a preset tension interval, as a tension abnormal point; The preset tension interval is determined by the material yield limit of the test part.
10. The method of claim 8, wherein the determining the pre-warning result according to the mapping of the tension outlier and the operating condition information comprises: determining a processing station corresponding to the abnormal tension point and an abnormal type corresponding to the abnormal tension point according to the mapping of the abnormal tension point and the working condition information; and generating an early warning result according to the tension data of the tension abnormal point, the processing station corresponding to the tension abnormal point and the abnormal type corresponding to the tension abnormal point.
11. The method of claim 8, wherein the test part comprises a triaxial force sensor and a test assembly, the test assembly is fixed on the triaxial force sensor, the processing station is used for processing the test assembly, and the method for acquiring the tensile force data of the reference piece in the test part comprises the following steps: Acquiring orthogonal axial force components of the test assembly, wherein the orthogonal axial force components are characterized by three axial components orthogonal to each other in a space rectangular coordinate system; and performing moment synthesis on the orthogonal axial force components to generate space resultant force, and generating tension data of the test part according to the orthogonal axial force components and the space resultant force.
12. The method of claim 8, wherein the determining the pre-warning result according to the operating parameter of the control device and the abnormal point of the tension comprises: Determining at least one of tension data of tension of the tension abnormal point, a processing station corresponding to the tension abnormal point and an abnormal type corresponding to the tension abnormal point according to the working parameters of the control equipment and the tension abnormal point; Determining corresponding production line information according to the processing stations corresponding to the abnormal points of the tension; And displaying at least one of the production line information, the tension data of the tension abnormal points, the processing stations corresponding to the tension abnormal points and the abnormal types corresponding to the tension abnormal points.
13. The utility model provides a pole ear fracture early warning method which is characterized in that, the method is applied to control equipment, control equipment and host computer and processing station communication connection, the host computer is equipped with communication interface, communication interface is used for establishing communication link with the benchmark spare, be equipped with test portion on the benchmark spare, the benchmark spare is used for gathering the pulling force data of benchmark spare at test portion, control equipment is provided with sign collection device, the method includes: controlling the processing station to process the reference piece and recording the working parameters of the control equipment under the condition that the identification acquisition device identifies the identification information of the reference piece; And sending the working parameters of the control equipment to an upper computer so that the upper computer generates an early warning result according to the working parameters of the control equipment and the tension data of the test part.
14. The method of claim 13, wherein controlling the processing station to process the reference piece and recording the operating parameters of the control device when the identification acquisition device identifies the identification information of the reference piece comprises: Controlling the processing station to process the reference piece and generating a working time stamp corresponding to a processing step under the condition that the identification acquisition device identifies the identification information of the reference piece, wherein the processing step corresponds to working condition information; recording working condition information of the processing station and a working time stamp corresponding to the working condition information; And generating working parameters of the control equipment according to the working condition information of the processing station and the working time stamp corresponding to the working condition information.

Description

Tab cracking early warning system and method Technical Field The invention relates to the technical field of industrial control, in particular to a tab cracking early warning system and method. Background In industrial processes, such as ultrasonic welding, flexible joining and packaging, it is possible to connect the two structures by means of flexible materials or sheet metal. In the actual production process, the connection part may be subjected to tensile/compressive forces due to the change of the spacing between the two structures caused by the partial process. When the tensile/compressive force applied to the connection portion exceeds its yield limit, the tab may be cracked, thereby affecting the performance and safety of the battery. At present, no effective means is available in the industry to monitor and control the tensile force of the tab in real time in the production process, so that the problem of cracking easily occurs to part of structures in the pole piece under the condition of overlarge stress, and the yield and reliability of products are affected. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The invention mainly aims to provide a tab cracking early warning system and method, and aims to solve the technical problem that a cracking process of a product in the prior art is difficult to detect. The invention provides a tab fracture early warning system, which comprises an upper computer, control equipment and a reference piece, wherein the upper computer is in communication connection with the control equipment, the upper computer is provided with a communication interface, the communication interface is used for establishing a communication link with the reference piece, a test part is arranged on the reference piece, the system comprises the control equipment, the reference piece, the upper computer, the control equipment and the control equipment, the control equipment is used for controlling a processing station to process the reference piece and record working parameters of the control equipment, the reference piece is used for recording tension data of the test part, the upper computer is used for acquiring the working parameters of the control equipment and tension data of the test part, and the upper computer is used for screening the tension data, determining abnormal tension points and determining early warning results according to the working parameters of the control equipment and the abnormal tension points. The reference member records the tension value received by itself during processing, and the upper computer processes the tension value to determine whether there is abnormal processing, thereby ensuring the rationality of each control parameter during processing. By simulating the actual processing condition of the product, the problem in the processing process is found from the view angle of the product, the tension data generated on the product in the production process is read, the tension data in the production process is monitored, and whether the tension exceeds the limit is judged. Judging whether the production process has the risk of cracking the product, and improving the accuracy and the comprehensiveness of crack risk detection. In some embodiments, the upper computer is configured to query, according to the working parameter of the control device, working condition information corresponding to the abnormal tension point, where a timestamp corresponding to the abnormal tension point corresponds to a working timestamp corresponding to the working condition information one by one. It should be noted that, the screening of the tensile force data only plays a role in judging whether a problem exists, and the positioning of the abnormal point of the tensile force is really a necessary way for solving the problem, and the working condition of the processing station and the change process of the tensile force data are associated through the timestamp, so that the association between the abnormal point of the tensile force data and the working condition is realized, and therefore, the abnormal tensile force caused by the production links is found, and the abnormal processing efficiency is improved. In some embodiments, the control device further comprises an identification acquisition device, the identification acquisition device is used for detecting identification information of the reference piece and generating a trigger signal according to the identification information, the control device is used for responding to the trigger signal and generating a time reference point, the control device is used for recording working condition information of the processing station and generating a working time stamp corresponding to the working condition information according to the time r