CN114577149A - Method and device for detecting flatness of tab - Google Patents
Method and device for detecting flatness of tab Download PDFInfo
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- CN114577149A CN114577149A CN202210484494.XA CN202210484494A CN114577149A CN 114577149 A CN114577149 A CN 114577149A CN 202210484494 A CN202210484494 A CN 202210484494A CN 114577149 A CN114577149 A CN 114577149A
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- tab
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a method for detecting the flatness of a tab, which comprises the following steps: the electric control equipment drives the multi-axis movement mechanism to move by controlling the power unit set so as to drive the laser sensor assembly connected with the multi-axis movement mechanism to move to a to-be-detected tab of the target battery module; acquiring flatness data of the tab to be detected through the laser sensor assembly; processing the collected flatness data, and comparing the processed flatness data with preset data; and if the flatness data of one lug at the position of the lug to be detected does not reach the standard, triggering early warning. The invention also provides a device for detecting the flatness of the tab, which is used for realizing the method for detecting the flatness of the tab. According to the technical scheme provided by the invention, before the tab welding process, the laser sensor assembly is driven by the multi-axis movement mechanism to move to the tab to be detected for full detection, so that the detection efficiency and the detection precision are obviously improved, and the detection cost is reduced.
Description
Technical Field
The application relates to the field of power batteries, in particular to a method and a device for detecting the flatness of a tab.
Background
When the soft-packaged battery cell is used for welding the tab, if the surface of the tab is uneven, the condition of insufficient welding or welding-through is easy to occur, and the welding quality and the yield of products are seriously influenced. Therefore, the used tab needs to ensure the smooth surface without deformation, so that the nickel sheet or the aluminum sheet of the protection plate can be fully attached to the plane of the tab, thereby ensuring the welding quality.
In the prior art, the flatness detection of the flat tab roller is mostly realized by adopting a manual visual inspection sampling inspection mode, the manual visual inspection mode has the disadvantages of high workload, high labor cost, low efficiency, incapability of realizing full inspection of tab products and missed inspection, the detection result has inevitable deviation through visual observation, the possibility of misjudging unqualified products into qualified products exists, the detection precision and accuracy cannot be guaranteed, the subsequent tab welding quality is influenced, and the recording and source tracing of each tab detection data cannot be realized by the manual visual inspection mode.
The manual spot check detection method belongs to a process before tab welding, and is used for detecting the flatness of a tab before welding so as to remove unqualified tab products. In the prior art, in the tab welding process, the surface of a tab is scanned by using a laser scanning sensor to synchronously adjust the welding track, the technical scheme has defects in the aspects of precision and standardization, the problem of tab cold welding and welding penetration is difficult to fundamentally solve, the cost loss is greater after the welding problem of a product is found, and the flatness of the surface of each tab is different, so the method needs to reset the laser scanning parameters and the welding track aiming at different detection objects. Therefore, before the tab welding process, the flatness of the tab is detected, unqualified products are removed, and the method is still the preferred method for improving the welding quality and reducing the cost.
Therefore, it is necessary to develop a method and a device for detecting the flatness of the tab to improve the detection efficiency and the detection precision and reduce the detection cost.
Disclosure of Invention
The method and the device for detecting the flatness of the tab can realize full detection of tab products, remarkably improve the detection efficiency and the detection precision and reduce the detection cost.
One of the concepts of the present application is that, the present application provides a tab flatness detection method, an electric control device drives a multi-axis movement mechanism to move by controlling a power device set, so as to drive a laser sensor assembly connected with the multi-axis movement mechanism to move to a tab to be detected of a target battery module; the power device group comprises a first power device and a second power device; the multi-axis movement mechanism comprises a first shaft and a second shaft which are movably connected; acquiring flatness data of the tab to be detected through the laser sensor assembly; processing the collected flatness data, and comparing the processed flatness data with preset data; if the flatness data of one lug at the position of the lug to be detected does not reach the standard, an early warning is triggered, so that the full detection of the target lug at the position of the lug to be detected of the target battery module is realized, the detection efficiency and the detection precision are improved, and the detection cost is reduced.
Specifically, the detected object of the detection of the flatness of the tab may be a single tab or a plurality of tabs at the tab to be detected of the target battery module. When a plurality of lugs at the lug position to be detected are detected, each lug needs to be detected, and a multi-axis movement mechanism capable of moving in multiple directions is required to be utilized to drive a laser sensor assembly positioned on the multi-axis movement mechanism to each target lug position in the module according to the position of each target lug in the module, so that the full detection of the lugs in the module is realized.
One of the concepts of the present application is also to provide a tab flatness detection apparatus based on the tab flatness detection method, including: the device comprises a support, a multi-axis motion mechanism, a laser sensor assembly and an electric control device; the bracket is fixedly connected with the multi-axis movement mechanism; the laser sensor assembly is arranged on the multi-axis movement mechanism and used for detecting flatness data of a to-be-detected lug of the target battery module; (ii) a The electric control equipment is electrically connected with the multi-axis movement mechanism, and the laser sensor assembly is driven to move to the position of the detection tab by controlling the multi-axis movement mechanism.
Based on the inventive concept, the application discloses a method for detecting the flatness of a tab, which comprises the following steps:
the electric control equipment drives the multi-axis movement mechanism to move by controlling the power unit set so as to drive the laser sensor assembly connected with the multi-axis movement mechanism to move to a to-be-detected tab of the target battery module; the power device group comprises a first power device and a second power device; the multi-axis movement mechanism comprises a first shaft and a second shaft which are movably connected;
acquiring flatness data of the tab to be detected through the laser sensor assembly;
processing the collected flatness data, and comparing the processed flatness data with preset data; and if the flatness data of one lug at the position of the lug to be detected does not reach the standard, triggering early warning.
The electric control equipment drives the multi-axis movement mechanism to move by controlling the power device group, and specifically comprises:
the electric control equipment sends an instruction to a first power device arranged on the first shaft, and the second shaft is controlled to move along the direction of the first shaft through the first power device.
The electric control equipment drives the multi-axis movement mechanism to move by controlling the power device group, and further comprises:
and the electric control equipment sends an instruction to a second power device arranged on the second shaft, and the second power device controls the laser sensor loading mechanism on the second shaft to move along the direction of the second shaft.
The power device group is still including locating the third power device on the laser sensor loading mechanism, automatically controlled equipment still includes through the motion of control power device group drive multiaxis motion, still includes:
and the electric control equipment sends an instruction to the third power device, and the third power device drives the laser sensor assembly positioned on the laser sensor loading mechanism to move along the direction of the laser sensor loading mechanism.
The laser sensor assembly is driven to move to a position of a pole lug to be detected of the target battery module by the movement of the first shaft, the second shaft and the laser sensor loading mechanism.
The method for detecting the flatness of the tab further comprises the following steps: leveling laser sensor assembly acquisition by data storage unit
Classifying and storing the integer data; and displaying the acquired flatness data in real time through the data visual unit.
According to the technical scheme, before the tab welding process, the laser sensor is driven to move to the tab to be detected of the target battery module through the multi-axis movement mechanism, the tab to be detected is detected completely, and the traditional detection mode of manual visual inspection is replaced, so that the tab detection efficiency and the tab detection precision are improved remarkably, and the detection cost is reduced; before the welding process, the flatness of the lug is detected, unqualified products are removed, the subsequent lug welding quality can be fundamentally improved, and the cost is reduced.
The application also discloses utmost point ear roughness detection device, its characterized in that includes: the device comprises a support, a multi-axis motion mechanism, a laser sensor assembly and an electric control device;
the bracket is fixedly connected with the multi-axis movement mechanism;
the laser sensor assembly is arranged on the multi-axis movement mechanism and used for detecting flatness data of a to-be-detected lug of the target battery module;
the electric control equipment is electrically connected with the multi-axis movement mechanism and used for driving the laser sensor assembly to move to the position of the tab to be detected by controlling the multi-axis movement mechanism.
The multi-axis movement mechanism comprises a first shaft and a second shaft, and a laser sensor loading mechanism is movably connected to the second shaft; the first shaft is fixed on the bracket, and the laser sensor assembly is arranged on the laser sensor loading mechanism; a first power device is arranged on the first shaft, and a second power device is arranged on the second shaft;
the first power device and the second power device are electrically connected with the electric control equipment; the first power device is used for controlling the second shaft to move along the direction of the first shaft; the second power device is used for controlling the laser sensor loading mechanism to move along the direction of the second shaft.
The laser sensor loading mechanism is provided with a third power device, and the third power device is electrically connected with the electric control equipment; the third power device is used for controlling the laser sensor assembly to move along the direction of the laser sensor loading mechanism.
The multi-axis motion mechanism further comprises a third axis; the third shaft is fixed on the bracket and is movably connected with the second shaft.
Through the technical scheme, the lug flatness detection device can adjust the detection position of the laser sensor assembly in real time according to the position change of the target lug of the target battery module to be detected at the lug, and scans each lug to be detected at the lug, so that full detection is realized.
Drawings
The present disclosure will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the present disclosure. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is a flowchart of a method of example 1 of the present invention;
fig. 2 is a schematic structural view of a tab flatness detection apparatus according to embodiment 2 of the present invention;
FIG. 3 is a schematic view of a multi-axis movement mechanism according to embodiment 2 of the present invention;
FIG. 4 is a schematic diagram of a target battery module according to the present invention;
fig. 5 is a schematic diagram of a tab to be detected according to the present invention;
reference symbol names:
1. a support; 2. a multi-axis motion mechanism; 3. a laser sensor assembly; 4. a first shaft; 5. a second shaft; 6. a laser sensor loading mechanism; 7. a third axis; 8. an electronic control device; 9. a target battery module; 10. and detecting the tab.
Detailed Description
The present application will be described in detail with reference to fig. 1 to 5.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The application provides a tab flatness detection method and a tab flatness detection device, which are high in detection efficiency, capable of realizing full detection of target tab flatness at a tab to be detected of a target battery module, low in detection cost and high in detection precision.
Example 1
The embodiment 1 of the application discloses a method for detecting the flatness of a tab, as shown in fig. 1, the method comprises the following steps:
step 1: the electric control equipment 8 drives the multi-axis movement mechanism 2 to move by controlling the power unit set so as to drive the laser sensor assembly 3 connected with the multi-axis movement mechanism 2 to move to a to-be-detected tab 10 of a target battery module 9;
the power device group comprises a first power device and a second power device; the multi-axis movement mechanism 2 comprises a first shaft 4 and a second shaft 5 which are movably connected;
the power device is a servo driver and is used for driving the multi-axis motion mechanism to move;
the tab to be detected comprises a plurality of target tabs which are distributed in an array manner in a limiting manner;
the electric control equipment 8 drives the multi-axis movement mechanism 2 to move by controlling the power device group, and specifically comprises: the electric control device 8 sends a command to a first power device arranged on the first shaft 4, and the second shaft 5 is controlled to move along the direction of the first shaft (4) through the first power device.
The control power device drives the multi-axis movement mechanism 2 to move through the electric control equipment 8, and the control method further comprises the following steps: the electric control equipment 8 drives the multi-axis movement mechanism 2 to move by controlling the power device group, and further comprises: the electric control device 8 sends a command to a second power device arranged on the second shaft 5, and the laser sensor loading mechanism 6 on the second shaft 5 is controlled to move along the direction of the second shaft 5 through the second power device.
The power device group is still including locating the third power device on the laser sensor loading mechanism 6, automatically controlled equipment 8 still includes through the motion of control power device group drive multiaxis motion 2:
and the electric control equipment 8 sends an instruction to the third power device, and the third power device drives the laser sensor assembly 3 on the laser sensor loading mechanism 6 to move along the direction of the laser sensor loading mechanism.
The first shaft 4, the second shaft 5 and the laser sensor loading mechanism 6 move to drive the laser sensor assembly 3 to move to a to-be-detected tab of a target battery module.
Step 2: acquiring flatness data of the position of the tab 10 to be detected through the laser sensor assembly 3;
the flatness data collected by the laser sensor assembly comprise flatness data of a plurality of tabs at the position of the tab to be detected, each tab has respective serial numbers, and the serial numbers of the tabs to which the corresponding flatness data belong are judged according to the coordinate position of the collected flatness data.
And step 3: processing the collected flatness data, and comparing the processed flatness data with preset data; and if the flatness data of one lug at the position of the lug to be detected does not reach the standard, triggering early warning.
The flatness data do not reach the standard means that the processed flatness data are compared with preset data, and if the processed flatness data are not in the preset data range, the flatness data are judged to not reach the standard.
The preset data are parameters preset according to the technological requirements of the flatness of the tab product.
The method for detecting the flatness of the tab can further comprise the following steps: the flatness data collected by the laser sensor assembly 3 are classified and stored through a data storage unit; and displaying the acquired flatness data in real time through the data visual unit.
In the embodiment 1 of the application, before the tab welding process, the multi-axis movement mechanism drives the laser sensor to move to the tab to be detected of the target battery module, and the flatness of the tab at the tab to be detected is fully detected, so that the traditional detection mode of manual visual inspection is replaced, the tab detection efficiency and the tab detection precision are obviously improved, and the detection cost is reduced; before the welding process, the flatness of the lug is detected, unqualified products are removed, the subsequent lug welding quality can be fundamentally improved, and the cost is reduced.
Example 2
the bracket 1 is fixedly connected with the multi-axis movement mechanism 2;
the laser sensor assembly 3 is arranged on the multi-axis movement mechanism 2 and used for detecting flatness data of a to-be-detected tab 10 of a target battery module 9;
the electric control equipment 8 is electrically connected with the multi-axis movement mechanism 2 and is used for driving the laser sensor assembly 3 to move to the position of the tab 10 to be detected by controlling the multi-axis movement mechanism 2.
The multi-axis movement mechanism 2, as shown in fig. 3, includes a first shaft 4, a second shaft 5, and a laser sensor loading mechanism 6; the first shaft 4 is fixed on the bracket 1, and the laser sensor assembly 3 is arranged on the laser sensor loading mechanism 6; a first power device is arranged on the first shaft 4, and a second power device is arranged on the second shaft 5;
the first power device and the second power device are electrically connected with the electric control equipment 8; the first power device is used for controlling the second shaft 5 to move along the direction of the first shaft 4; the second power device is used for controlling the laser sensor loading mechanism 6 to move along the direction of the second shaft 5.
A third power device is arranged on the laser sensor loading mechanism 6 and is electrically connected with the electric control equipment 8; the third power device is used for controlling the laser sensor assembly 3 to move along the direction of the laser sensor loading mechanism 6.
The first shaft 4, the second shaft 5 and the laser sensor loading mechanism 6 are mutually vertical in pairs.
The multi-axis movement mechanism 2 further comprises a third axis 7; the third shaft 7 is fixed on the bracket 1 and is movably connected with the second shaft 5; the third shaft 7 is arranged perpendicular to the second shaft 5.
Preferably, the detection distance between the laser sensor assembly 3 and the tab 10 to be detected is 80mm +/-50 mm.
The detection of the laser sensor assembly on the lug to be detected needs to be controlled within a certain detection distance, the obtained detection data is reliable and effective, effective detection cannot be obtained when the detection data exceeds or is smaller than the required detection distance, and the detection result is not credible. In the lug flatness detection device, the effective detection distance between the laser sensor assembly and the lug to be detected at the lug is 80mm +/-50 mm, namely the distance exceeds 130mm or is less than 30mm, so that the detection sample cannot be effectively detected.
Preferably, the laser sensor assembly 3 is a line scanning type laser sensor or a surface scanning type laser sensor.
The line scanning laser sensor can simultaneously perform scanning detection on all points on one line, and the surface scanning laser sensor
The scanning detection of all points on the surface can be realized, the two laser sensors can realize the scanning detection of the sample surface in a larger range, and the detection precision is higher than that of manual visual inspection spot check.
Preferably, the electric control device 8 is a programmable logic controller, i.e. a PLC controller.
The PLC controller has high reliability and strong anti-interference capability, is simple and convenient to program, install and use, does not need to add too many intermediate parts or more interfaces between an input end and an output end, can save time and cost, has multiple control functions and mathematical operation functions of data acquisition, storage and processing functions, is applied to the electric control equipment in the scheme, can send a motion instruction to the power device based on the control function of the electric control equipment, and processes data acquired by the laser sensor assembly based on the mathematical operation function of the electric control equipment.
Preferably, the power device is a servo driver.
When the servo driver is driven, the position, the speed and the moment can be controlled in a closed loop mode, and the precision is high; the high-speed performance is good; the overload resistance is strong, the load which is three times of the rated torque can be borne, and the method is particularly suitable for occasions with instant load fluctuation and requirements on quick starting; the low-speed operation is stable; the dynamic corresponding time of acceleration and deceleration of the motor is short, and is generally within tens of milliseconds, so that the servo driving machine is applied to driving of the multi-axis motion mechanism, and the high-precision requirement of surface flatness data detection of a sample to be detected can be met.
Utmost point ear roughness detection device still includes: the data storage unit is used for storing the lug flatness data acquired by the laser sensor assembly 3; the data visual unit is used for displaying the flatness data of the lug in real time; the data storage unit and the data visual unit are both electrically connected with the electric control device 8.
The data storage unit is used for recording and storing flatness data of each target tab acquired by the laser sensor assembly and is used for realizing data traceability; the data visual unit is used for displaying flatness data of each target tab in real time, so that technicians can conveniently observe the flatness data, and the problem tabs can be quickly positioned, so that the detection efficiency is improved.
The utmost point ear roughness detection device that this application embodiment 2 disclosed can wait to detect the position change of the target utmost point ear of utmost point ear department according to target battery module, and the detection position of adjusting laser sensor subassembly in real time is treated each utmost point ear of detecting utmost point ear department and is scanned, realizes examining entirely.
The present application has been described in detail above, and specific examples thereof are used herein to explain the principles and implementations of the present application, which are presented solely to aid in understanding the present application and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall into the protection scope of the claims of the present disclosure.
Claims (10)
1. A method for detecting the flatness of a tab is characterized by comprising the following steps:
the electric control equipment (8) drives the multi-axis movement mechanism (2) to move by controlling the power device set so as to drive the laser sensor assembly (3) connected with the multi-axis movement mechanism (2) to move to a to-be-detected tab (10) of the target battery module (9); the power device group comprises a first power device and a second power device; the multi-axis movement mechanism (2) comprises a first shaft (4) and a second shaft (5) which are movably connected;
the flatness data of the position of the tab (10) to be detected is collected through the laser sensor assembly (3);
processing the collected flatness data, and comparing the processed flatness data with preset data; and if the flatness data of one lug at the position of the lug to be detected does not reach the standard, triggering early warning.
2. The tab flatness detection method according to claim 1, wherein the electronic control device (8) drives the multi-axis movement mechanism (2) to move by controlling the power unit, and specifically comprises:
the electric control equipment (8) sends a command to a first power device arranged on the first shaft (4), and the second shaft (5) is controlled to move along the direction of the first shaft (4) through the first power device.
3. The tab flatness detecting method according to claim 2, wherein the electronic control device (8) drives the multi-axis movement mechanism (2) to move by controlling the power unit, further comprising:
the electric control equipment (8) sends an instruction to a second power device arranged on the second shaft (5), and the second power device controls a laser sensor loading mechanism (6) positioned on the second shaft (5) to move along the direction of the second shaft (5).
4. The tab flatness detecting method according to claim 3, wherein the power unit set further includes a third power unit provided on the laser sensor loading mechanism (6), and the electronic control device (8) drives the multi-axis moving mechanism (2) to move by controlling the power unit set, further comprising:
and the electric control equipment (8) sends an instruction to the third power device, and the third power device drives the laser sensor assembly (3) positioned on the laser sensor loading mechanism (6) to move along the direction of the laser sensor loading mechanism.
5. The method for detecting the flatness of the tab as claimed in claim 4, wherein the laser sensor assembly (3) is driven to move to the tab to be detected of the target battery module by the movement of the first shaft (4), the second shaft (5) and the laser sensor loading mechanism (6).
6. The tab flatness detecting method according to claim 1, wherein the laser is paired through a data storage unit
The flatness data collected by the sensor assembly (3) are classified and stored; and displaying the acquired flatness data in real time through the data visual unit.
7. The utility model provides a utmost point ear roughness detection device which characterized in that includes: the device comprises a support (1), a multi-axis motion mechanism (2), a laser sensor assembly (3) and an electric control device (8);
the bracket (1) is fixedly connected with the multi-axis movement mechanism (2);
the laser sensor assembly (3) is arranged on the multi-axis movement mechanism (2) and is used for detecting flatness data of a to-be-detected tab (10) of a target battery module (9);
the electric control equipment (8) is electrically connected with the multi-axis movement mechanism (2) and used for driving the laser sensor assembly (3) to move to the position of the tab (10) to be detected by controlling the multi-axis movement mechanism (2).
8. The tab flatness detecting device according to claim 7, wherein the multi-axis movement mechanism (2) comprises a first shaft (4) and a second shaft (5), and a laser sensor loading mechanism (6) is movably connected to the second shaft (5); the first shaft (4) is fixed on the support (1), and the laser sensor assembly (3) is arranged on the laser sensor loading mechanism (6); a first power device is arranged on the first shaft (4), and a second power device is arranged on the second shaft (5);
the first power device and the second power device are electrically connected with the electric control equipment (8); the first power device is used for controlling the second shaft (5) to move along the direction of the first shaft (4); the second power device is used for controlling the laser sensor loading mechanism (6) to move along the direction of the second shaft (5).
9. The tab flatness detecting device according to claim 8, wherein a third power device is provided on the laser sensor loading mechanism (6), and the third power device is electrically connected with the electronic control equipment (8); the third power device is used for controlling the laser sensor assembly (3) to move along the direction of the laser sensor loading mechanism (6).
10. The tab flatness detection device according to claim 8, characterized in that the multi-axis movement mechanism (2) further includes a third shaft (7); the third shaft (7) is fixed on the bracket (1) and is movably connected with the second shaft (5).
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| CN202210484494.XA CN114577149A (en) | 2022-05-06 | 2022-05-06 | Method and device for detecting flatness of tab |
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| CN202210484494.XA CN114577149A (en) | 2022-05-06 | 2022-05-06 | Method and device for detecting flatness of tab |
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| CN112763486A (en) * | 2020-11-30 | 2021-05-07 | 成都飞机工业（集团）有限责任公司 | Composite material wall plate array hole detection method based on line laser scanning |
| CN214843024U (en) * | 2021-04-16 | 2021-11-23 | 领胜城科技（江苏）有限公司 | Laser measuring machine |
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