CN115164723B - Detection device and detection method for size and spacing of battery lugs - Google Patents
Detection device and detection method for size and spacing of battery lugs Download PDFInfo
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- CN115164723B CN115164723B CN202210862193.6A CN202210862193A CN115164723B CN 115164723 B CN115164723 B CN 115164723B CN 202210862193 A CN202210862193 A CN 202210862193A CN 115164723 B CN115164723 B CN 115164723B
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000031700 light absorption Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/58—Belts or like endless load-carriers with means for holding or retaining the loads in fixed position, e.g. magnetic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
-
- 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
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a device and a method for detecting the size and the spacing of battery lugs, which are used for solving the problems that the lugs are deformed or scratched and the detection efficiency is low due to contact measurement in the prior art. The detection device comprises a mounting frame, a conveyor belt, a laser emitter, a photoelectric converter and a processor, wherein the laser emitter emits laser beams to the surface of the conveyor belt, the photoelectric converter receives the light reflected by the lug when the laser beams irradiate the lug, the light reflected by the lug is converted into an electric signal, the processor calculates the lug size and the lug distance of the battery lug placed in the battery groove 13 according to the length of the received electric signal and the transmission speed of the conveyor belt, and the lug size and the lug distance are measured by adopting a laser technology, so that the problems of lug scratch and deformation caused by contact measurement can be avoided.
Description
Technical Field
The invention relates to the technical field of battery detection, in particular to a device and a method for detecting the size and the spacing of battery lugs.
Background
The battery tab is a key part (copper or aluminum) for leading out the positive electrode and the negative electrode in the battery and connecting with other batteries or external equipment, and plays roles of switching and electric quantity transmission. The tab size and the tab spacing of the battery are important characteristic parameters of battery products, in the battery manufacturing process, the measurement of the tab size and the tab spacing of the battery is an important procedure, if the tab size and the tab spacing of the battery exceed design requirements, the problem of uneven tab arrangement after module stacking can be caused, and then welding defects are caused, so that the product cannot meet the use requirements.
At present, a measuring scale (such as a vernier caliper) is generally adopted to detect the size of the tab and the distance between the tabs, on one hand, the detection efficiency is low, and on the other hand, the accuracy of a measurement result is low due to the fact that the tab is easy to deform or scratch when the measuring scale is used for contact measurement due to the fact that the tab material is thinner (about 0.3 mm).
Disclosure of Invention
The invention provides a device and a method for detecting the size and the spacing of battery lugs, which are used for solving the problems that the lugs are deformed or scratched and the detection efficiency is low due to contact measurement in the prior art.
In a first aspect, an embodiment of the present invention provides a device for detecting a size and a spacing of tabs of a battery, including:
A mounting frame;
the conveyor belt is arranged on the mounting frame, a light absorption layer is paved on the conveyor belt, a plurality of battery grooves are formed in the light absorption layer and are arranged along the transmission direction of the conveyor belt, and the battery grooves are used for placing batteries;
The laser transmitter and the photoelectric converter are sequentially arranged on the mounting frame along the transmission direction, the laser transmitter is used for transmitting laser beams to the surface of the conveyor belt, and the photoelectric converter is used for receiving light reflected by the lug when the laser beams irradiate the lug and converting the light reflected by the lug into an electric signal;
And the processor is used for calculating the tab size and the tab spacing of the battery tabs placed in the battery slots according to the time for starting to receive the electric signals, the time for stopping to receive the electric signals and the transmission speed of the conveyor belt for each battery slot, comparing the calculated tab size and tab spacing with corresponding standard sizes, and judging whether the tabs of the battery are qualified according to the comparison result.
According to the detection device for the size and the spacing of the battery lugs, the conveyor belt paved with the light absorption layers is placed on the mounting frame, the light absorption layers are provided with the plurality of battery grooves arranged along the transmission direction of the conveyor belt, the laser transmitter and the photoelectric converter are sequentially arranged on the mounting frame along the transmission direction, the laser transmitter is used for transmitting laser beams to the surface of the conveyor belt, and the photoelectric converter is used for receiving light reflected by the lugs when the laser beams are irradiated to the lugs and converting the light into electric signals; the processor is used for calculating the tab size and the tab spacing of the battery tabs placed in the battery groove, comparing the calculated tab size and tab spacing with corresponding standard sizes respectively, and judging whether the tabs of the battery are qualified according to the comparison result. Because the laser technology is adopted to measure the size and the spacing of the lugs, the problems of scratch and deformation of the lugs caused by contact measurement can be avoided, and compared with manual measurement, the detection efficiency can be improved.
In an alternative embodiment, the laser transmitter is equidistant from the conveyor belt surface and the photoelectric converter is equidistant from the conveyor belt surface in a direction perpendicular to the transport direction.
According to the device for detecting the size and the spacing of the battery lugs, the distance between the laser transmitter and the surface of the conveyor belt is equal to the distance between the photoelectric converter and the surface of the conveyor belt, so that the photoelectric converter can be more accurately arranged on a reflection light path, and the detection accuracy is improved.
In an alternative embodiment, the battery jar includes a jar body for placing the battery body, a first tab jar for placing the first tab of the battery, and a second tab jar for placing the second tab of the battery.
The detection device for the size and the spacing of the battery tabs is used for arranging the first tab slot for placing the first battery tab and the second tab slot for placing the second battery tab in a split mode, the gap between the first battery tab and the second battery tab is ensured to be a light absorption layer, and further the processor determines the time for starting to receive the electric signal and the time for stopping to receive the electric signal, so that the size and the spacing of the battery tabs are calculated according to the transmission speed of a conveyor belt.
In an alternative embodiment, at least two of the plurality of battery wells are different in size.
According to the detection device for the size and the spacing of the battery lugs, at least two battery grooves in the plurality of battery grooves are different in size, so that the detection device can be suitable for batteries with different sizes and specifications, and the detection flexibility is improved.
In an alternative embodiment, when the battery is embedded in the battery groove, the surface of the tab of the battery, which is far away from the bottom surface of the battery groove, is not lower than the surface of the conveyor belt.
According to the detection device for the size and the spacing of the battery lugs, the surface of the battery lugs, which is far away from the bottom surface of the battery groove, is not lower than the surface of the conveyor belt, so that the detection accuracy can be improved.
In an alternative embodiment, the automatic code scanning gun is further included, and the automatic code scanning gun, the laser emitter and the photoelectric converter are sequentially arranged on the mounting frame along the transmission direction;
The automatic code scanning gun is in communication connection with the processor, and is used for scanning two-dimensional codes on batteries placed in the battery grooves aiming at each battery groove, and forming a corresponding relation between a result obtained by scanning and a tab detection result of the battery embedded in the battery groove.
According to the device for detecting the size and the spacing of the battery lugs, the automatic code scanning gun scans the two-dimensional codes on the battery placed in the battery groove, a corresponding relation is formed between a scanning result and the lug detection result of the battery embedded in the battery groove, the lug detection result of the battery and the two-dimensional codes on the battery are correspondingly bound, so that historical data can be searched and traced according to recorded results, the qualification rate of a production line is calculated, the production capacity is judged in time, and a corresponding improvement strategy is formulated.
In an alternative embodiment, the mounting frame comprises a feeding end and a discharging end, the transmission direction is from the feeding end to the discharging end, and the automatic code scanning gun is mounted at the feeding end.
According to the device for detecting the size and the spacing of the battery lugs, the automatic code scanning gun is arranged at the feeding end so as to scan the two-dimensional code on the battery placed in the battery groove, and then the size and the spacing of the battery lugs are measured, so that the corresponding relation between the bar code result and the detection result can be formed correctly.
In an alternative embodiment, the thickness of the light absorbing layer is one half of the cell thickness and the light absorbing layer is a light absorbing material.
According to the detection device for the size and the spacing of the battery lugs, the depth of the battery groove is designed to be half of the thickness of the battery, namely, the depth of the battery groove is consistent with the thickness of the light absorption layer paved on the conveyor belt, so that the manufacturing process can be simplified.
In a second aspect, an embodiment of the present invention further provides a method for detecting a battery tab size and a tab spacing, which is applied to any one of the foregoing devices for detecting a battery tab size and a tab spacing, where the method includes:
calculating the tab size and the tab spacing of the battery tabs embedded in each battery slot according to the time when the electric signals are started to be received, the time when the electric signals are stopped to be received and the transmission speed;
And comparing the calculated tab size and tab spacing with corresponding standard sizes respectively, and judging whether the tabs of the battery are qualified or not according to a comparison result.
In an alternative embodiment, the calculating the tab size and the tab spacing of the battery tab embedded in the battery slot according to the time when the receiving of the electric signal starts, the time when the receiving of the electric signal stops, and the transmission speed includes:
determining a first duration according to the first time of starting to receive the electric signal and the first time of stopping to receive the electric signal, determining a second duration according to the first time of stopping to receive the electric signal and the second time of starting to receive the electric signal, and determining a third duration according to the second time of starting to receive the electric signal and the second time of stopping to receive the electric signal;
Determining the size of a first tab of the battery according to the first duration and the transmission speed of the conveyor belt, determining the size of a second tab of the battery according to the third duration and the transmission speed, and determining the tab spacing between the first tab and the second tab according to the second duration and the transmission speed.
The technical effects that may be achieved by the method for detecting the size of the battery tab and the distance between the tabs disclosed in the second aspect are described above with reference to the first aspect or the technical effects that may be achieved by the various possible solutions in the first aspect, and the detailed description is not repeated here.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a device for detecting the size and spacing of battery tabs according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a battery according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an operating principle of a laser transmitter and a photoelectric converter according to an embodiment of the present invention;
Fig. 4 is a flow chart of a method for detecting the size and the spacing of the tabs of a battery according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
An embodiment of the present invention provides a device for detecting a size and a spacing of tabs of a battery, as shown in fig. 1, including:
A mounting frame 10;
the conveyor belt 11, the conveyor belt 11 is set up on the mounting frame 10, lay the light-absorbing layer 12 on the conveyor belt 11, there are multiple battery slots 13 arranged along the transmission direction of the conveyor belt 11 on the light-absorbing layer 12, the battery slot 13 is used for placing the battery 14;
a laser emitter 15 and a photoelectric converter 16, the laser emitter 15 and the photoelectric converter 16 being mounted on the mounting frame 10 in sequence along a transmission direction, the laser emitter 15 being configured to emit a laser beam toward a surface of the conveyor belt 11, the photoelectric converter 16 being configured to receive light reflected by the tab 17 when the laser beam is irradiated onto the tab 17, and to convert the light reflected by the tab 17 into an electrical signal;
The processor 18 is in communication connection with the photoelectric converter 16, and the processor 18 is configured to calculate, for each battery slot 13, a tab size and a tab pitch of the battery tab 17 placed in the battery slot 13 according to a time when the receiving of the electric signal is started, a time when the receiving of the electric signal is stopped, and a transmission speed of the conveyor belt 11, compare the calculated tab size and tab pitch with corresponding standard sizes, and determine whether the tab 17 of the battery 14 is qualified according to a comparison result.
It should be noted that, the conveyor belt 11 may be connected to a variable frequency motor (not shown in the figure), the transmission speed of the conveyor belt 11 is controlled and adjusted by the variable frequency motor, and the speed of the conveyor belt may be adjusted in real time according to the capacity of the battery 14, so as to adjust the size of the battery tab 17 and the detection speed of the tab spacing.
The battery generally comprises two tabs, namely a tab leading out of a positive electrode and a tab leading out of a negative electrode, and the size of the tab is measured according to the embodiment of the invention, and the size of the two tabs is required to be measured.
For example, as shown in fig. 2, the battery 14 includes a battery body 141, a first tab 171, and a second tab 172.
The battery case 13 includes a case body for receiving the battery body 141 of the battery 14, a first tab groove for receiving the first tab 171 of the battery 14, and a second tab groove for receiving the second tab 172 of the battery 14.
The battery case 13 may be formed in an appropriate shape according to the size and specification of the battery 14, and the shape of the battery case 13 is not limited in any way.
In the detection device for the size and the spacing of the battery tabs in the embodiment of the invention, the first tab slot for placing the first tab 171 and the second tab slot for placing the second tab 172 are separately arranged, so that the gap between the first tab 171 and the second tab 172 of the battery is ensured to be the light absorption layer 12, the processor 18 further determines the time for starting to receive the electric signal and the time for stopping to receive the electric signal, and calculates the size and the spacing of the tabs of the battery tabs by combining the transmission speed of the conveyor belt 11.
In a specific implementation, at least two battery slots 13 may be different in size among the plurality of battery slots 13 to accommodate batteries of different sizes.
In one embodiment, the light absorbing layer 12 laid on the conveyor belt 11 is made of light absorbing material, the thickness of the light absorbing layer 12 can be half of the thickness of the battery 14, and the battery groove 13 with an adaptive shape can be formed on the light absorbing layer 12 according to the batteries 14 with different sizes.
When the battery 14 is inserted into the battery groove 13, the surface of the tab 17 of the battery 14, which is away from the bottom surface of the battery groove 13, is not lower than the surface of the conveyor belt 11 to ensure the accuracy of the calculated tab size and tab spacing.
Specifically, the depth of the battery groove 13 may be designed to be half of the thickness of the battery 14, that is, the thickness of the light absorbing layer 12 laid on the conveyor belt 11 is consistent, and in addition, battery grooves 13 with different sizes and shapes may be formed so as to be suitable for batteries with different sizes and specifications.
In one embodiment, the laser transmitter 15 is equidistant from the surface of the conveyor belt 11 and the photoelectric converter 16 is equidistant from the surface of the conveyor belt 11 in a direction perpendicular to the direction of conveyance.
The distance between the laser transmitter 15 and the surface of the conveyor belt 11 and the distance between the photoelectric converter 16 and the surface of the conveyor belt 11 are adjustable; the spectrum receiving range of the photoelectric converter 16 is consistent with the wave band of the laser beam emitted by the laser emitter 15, and natural light is not received, so that interference of stray light on the detection result can be avoided.
In practice, as shown in fig. 3, the laser emitter 15 may be disposed at a vertical distance of 10cm from the surface of the conveyor belt 11, the photoelectric converter 16 may be disposed at a vertical distance of 10cm from the surface of the conveyor belt 11, and the photoelectric converter 16 may be disposed on the reflected light path.
In the embodiment of the invention, the distance between the laser emitter 15 and the surface of the conveyor belt 11 is equal to the distance between the photoelectric converter 16 and the surface of the conveyor belt 11, and the spectrum receiving range of the photoelectric converter 16 is consistent with the wave band of the laser beam emitted by the laser emitter 15, so that the photoelectric converter 16 only receives the light reflected by the tab 17 and does not receive stray light, thereby avoiding the interference of the stray light.
As shown in fig. 3, the vertical distance between the laser transmitter 15 and the surface of the conveyor belt 11 is 10cm, and the power supply is supplied by 220V mains supply, the power line of the laser transmitter 15 can be hidden in the slot of the mounting frame 10, the laser transmitter 15 is controlled to be turned on and off by a switch, after the laser transmitter 15 is turned on, the laser transmitter 15 can continuously transmit a laser beam with the diameter of about 0.1mm at an incident angle of 30 °, and after the laser transmitter 15 is turned off, the laser transmitter 15 stops transmitting the laser beam;
The vertical distance between the photoelectric converter 16 and the surface of the conveyor belt 11 is 10cm, the power line and the signal transmission line of the photoelectric converter 16 are connected with the processor 18, the power line and the signal transmission line can be hidden in the wire slot of the mounting frame 10, when the photoelectric converter 16 receives the light reflected by the tab, the photoelectric converter converts the received light signal into an electric signal in real time, and sends the electric signal to the processor 18, when the photoelectric converter 16 cannot receive the light reflected by the tab, namely, the laser beam emitted by the laser emitter 15 is absorbed by the light absorption layer 12 paved on the conveyor belt 11, the photoelectric converter 16 cannot receive the light signal, and the electric signal cannot be sent to the processor 18;
The processor 18 calculates the tab size and the tab spacing of the battery tab 17 placed in the battery slot 13 according to the time when the electric signal starts to be received, the time when the electric signal stops to be received and the transmission speed V of the conveyor belt 11, compares the calculated tab size and tab spacing with corresponding standard sizes respectively, judges whether the tab 17 of the battery 14 is qualified according to the comparison result, if the tab size and tab spacing of the battery tab 17 are qualified, the qualified battery is transferred to the next station along with the conveyor belt 11, and if the tab size and tab spacing of the battery tab 17 are unqualified, the processor 18 sends an NG alarm prompt to remind the unqualified battery to be taken down and carry out isolation treatment.
In the embodiment of the invention, a conveyor belt 11 paved with a light absorption layer 12 is placed on a mounting frame 10, a laser emitter 15 and a photoelectric converter 16 are sequentially arranged on the mounting frame 10 along the transmission direction, the laser emitter 15 is used for emitting laser beams to the surface of the conveyor belt 11, and the photoelectric converter 16 is used for receiving the light reflected by the lug 17 when the laser beams are irradiated onto the lug 17 and converting the light into electric signals; the processor 18 is configured to calculate a tab size and a tab spacing of the battery tab 17 disposed in the battery slot 13, compare the calculated tab size and tab spacing with corresponding standard sizes, and determine whether the tab 17 of the battery 14 is qualified according to a comparison result. The detection device for the size and the spacing of the battery lugs adopts a laser scanning technology, has strong collimation of laser and belongs to nondestructive detection, so that the problems of lug scratch and deformation caused by contact measurement can be avoided, the detection efficiency can be improved, in addition, the light absorption layer 12 made of a light absorption material with high absorptivity is paved on the conveyor belt 11, and the fact that no reflected light enters the photoelectric converter 16 except the lugs 17 on the surface of the conveyor belt 11 is ensured, so that the accuracy of a measurement result is improved.
In practice, as shown in fig. 1, the device for detecting the size and the spacing between the battery tabs may further include an automatic code scanning gun 19, where the automatic code scanning gun 19, the laser transmitter 15 and the photoelectric converter 16 are sequentially arranged on the mounting frame 10 along the transmission direction;
The automatic code scanning gun 19 is in communication connection with the processor 18, and the automatic code scanning gun 19 is used for scanning the two-dimensional code on the battery 14 placed in the battery slot 13 for each battery slot 13 and forming a corresponding relation between a scanning result and a detection result of the tab 17 of the battery 14 embedded in the battery slot 13.
The mounting frame 10 comprises a feeding end and a discharging end, the transmission direction is the direction from the feeding end to the discharging end, and the automatic code scanning gun 19 can be arranged at the feeding end.
The automatic code scanning gun 19 is arranged at the front end of the laser emitter 15, the vertical distance between the automatic code scanning gun 19 and the surface of the conveyor belt 11 can be equal to the distance between the laser emitter 15 and the surface of the conveyor belt 11, the distance between the photoelectric converter 16 and the surface of the conveyor belt 11 is equal to, for example, 10cm, the automatic code scanning gun 19 is in communication connection with the processor 18, the battery 14 is transmitted along with the conveyor belt 11 in the battery tank 13, when the battery 14 is transmitted to the lower part of the automatic code scanning gun 19, the two-dimensional code on the battery 14 passes through the lower part of the automatic code scanning gun 19, the automatic code scanning gun 19 automatically scans and inputs the code into the processor 18, the processor 18 forms a corresponding relation between the scanned result and the detection result of the lug 17 of the battery 14 embedded in the battery tank 13, and the detection result of the lug 17 of the battery 14 is correspondingly bound with the two-dimensional code on the battery 14.
For example, as shown in the following table, the detection device detects 5 batteries, the two-dimensional code on the batteries is scanned by the automatic code scanning gun 19 to obtain the results BA1202205010001, BA1202205010002, BA1202205010003, BA1202205010004 and BA1202205010005, the automatic code scanning gun 19 sends the scanned results to the processor 18, after the processor 18 receives the bar code result, the bar code result is stored, when the processor 18 receives the electric signal sent by the photoelectric converter 16 for the first time, the time when the processor 18 stops receiving the electric signal sent by the photoelectric converter 16 for the first time, the time when the processor 18 starts receiving the electric signal sent by the photoelectric converter 16 for the second time, and the time when the processor 18 stops receiving the electric signal sent by the photoelectric converter 16 for the second time.
The processor 18 takes the time between the time when the reception of the electric signal is started for the first time and the time when the reception of the electric signal is stopped for the first time as a first time length t1, the time between the time when the reception of the electric signal is stopped for the first time and the time when the reception of the electric signal is started for the second time as a second time length t2, the time between the time when the reception of the electric signal is started for the second time and the time when the reception of the electric signal is stopped for the second time as a third time length t3, the processor 18 determines the transmission speed V of the conveyor belt 11, calculates a first tab size s1=t1×v, a second tab size s2=t3×v, and a tab spacing s3=t2×v between the first tab and the second tab.
And (3) comparing S1 with 5mm, S3 with 5mm, S2 with 10mm, if the three comparison results are the same, confirming that the tab of the battery is qualified (OK), and if at least one comparison result is different, confirming that the tab of the battery is unqualified (NG).
| Bar code | First tab size | Second pole ear size | Tab spacing | Detection result |
| BA1202205010001 | 5mm | 5mm | 10mm | OK |
| BA1202205010002 | 5mm | 5.2mm | 10mm | NG |
| BA1202205010003 | 5mm | 5mm | 10mm | OK |
| BA1202205010004 | 5mm | 5mm | 10mm | OK |
| BA1202205010005 | 5mm | 5mm | 10mm | OK |
In order to avoid errors in laser measurement and improve measurement accuracy, the standard size in the embodiment of the invention can be in a range, for example, the standard size of the tab is 5mm plus or minus 0.2mm, and the standard size of the tab spacing is 10mm plus or minus 0.2mm.
The processor 18 forms a corresponding relation between the code scanning result and the detection result, stores the corresponding relation, can inquire the traceability historical data, calculates the qualification rate of the production line, timely judges the production capacity, and formulates a corresponding improvement strategy.
According to the device for detecting the size and the spacing of the battery lugs, the automatic code scanning gun 19 is arranged at the feeding end, so that two-dimensional codes on the battery 14 placed in the battery groove 13 are scanned at first, the detection result of the battery 14 embedded in the battery groove 13 and the scanning result are conveniently and subsequently formed into a corresponding relation, the corresponding relation is transmitted to the processor 18, the counting function of a program in the processor 18 is utilized, the total number of the batteries to be detected can be counted on line, the yield of the production line can be calculated, and the historical data can be queried through the two-dimensional codes.
Based on the same inventive concept, the embodiment of the present invention further provides a method for detecting the size and the spacing of the tabs of the battery, which is applied to the device for detecting the size and the spacing of the tabs of the battery core described in any one of the embodiments, as shown in fig. 4, and the method includes:
S401: calculating the tab size and the tab spacing of the battery tabs embedded in the battery slots 13 according to the time when the electric signals are started to be received, the time when the electric signals are stopped to be received and the transmission speed for each battery slot 13;
S402: and comparing the calculated tab size and tab spacing with corresponding standard sizes respectively, and judging whether the tab 17 of the battery 14 is qualified or not according to the comparison result.
In an alternative embodiment, the calculation of the tab size and tab pitch of the battery tabs embedded in the battery can 13 from the time when the reception of the electric signal is started, the time when the reception of the electric signal is stopped, and the transmission speed includes:
Determining a first time length according to the time when the electric signal starts to be received for the first time and the time when the electric signal stops to be received for the first time, determining a second time length according to the time when the electric signal stops to be received for the first time and the time when the electric signal starts to be received for the second time, and determining a third time length according to the time when the electric signal starts to be received for the second time and the time when the electric signal stops to be received for the second time;
The size of the first tab 171 of the battery 14 is determined according to the first time period and the transmission speed of the conveyor belt 11, the size of the second tab 172 of the battery 14 is determined according to the third time period and the transmission speed, and the inter-ear distance between the first tab 171 and the second tab 172 is determined according to the second time period and the transmission speed.
For ease of understanding, the overall flow of the embodiments of the present invention is described below.
Placing a battery 14 to be tested in a battery groove 13 on a conveyor belt 11 which moves at a constant speed V, and automatically scanning a two-dimensional code on the battery 14 by the automatic code scanning gun 19 and inputting the two-dimensional code into a processor 18 when the battery 14 passes right below the automatic code scanning gun 19;
the laser transmitter 15 emits a laser beam to the surface of the conveyor belt 11, when the incident laser beam irradiates the first tab 171 of the battery 14, the light reflected by the first tab 171 is received by the photoelectric converter 16, the photoelectric converter 16 converts the received reflected light signal into an electric signal, and sends the electric signal to the processor 18, and the processor 18 starts to receive the electric signal for the first time, and records the time when the electric signal starts to be received for the first time;
When the incident laser beam irradiates the middle region of the first tab 171 and the second tab 172 of the battery, the incident laser beam is absorbed by the light absorbing layer 12 on the middle region, the photoelectric converter 16 does not receive the reflected light signal, and the processor 18 starts to stop receiving the electric signal for the first time, and records the time when the electric signal stops being received for the first time;
When the incident laser beam is irradiated onto the second ear 172 of the battery 14, the light reflected by the second ear 172 is received by the photoelectric converter 16, the photoelectric converter 16 converts the received reflected light signal into an electrical signal, and sends the electrical signal to the processor 18, and the processor 18 starts to receive the electrical signal for the second time, and records the time when the second starts to receive the electrical signal;
when the incident laser beam is irradiated to the light-absorbing layer 12 on the side of the second tab 172 of the cell 14 in the transmission direction, the processor 18 stops receiving the electric signal for the second time, and records the time at which the reception of the electric signal is stopped for the second time.
The processor 18 determines a first time period t1 according to the first time of starting to receive the electric signal and the first time of stopping to receive the electric signal, determines a second time period t2 according to the first time of stopping to receive the electric signal and the second time of starting to receive the electric signal, and determines a third time period t3 according to the second time of starting to receive the electric signal and the second time of stopping to receive the electric signal;
the processor 18 determines the size S1 of the first tab 171 of the battery 14, i.e. s1=v×t1, the size S3 of the second tab 172 of the battery 14, i.e. s3=v×t3, the second length t2 and the transmission speed V, based on the first length t1 and the transmission speed V, and the inter-ear spacing S2 between the first tab 171 and the second tab 172, i.e. s2=v×t2;
the processor 18 compares the calculated tab size S1 of the first tab, the tab size S3 of the second tab and the tab spacing S2 with corresponding standard sizes respectively, judges whether the tab 17 of the battery 14 is qualified according to the comparison result, if the tab 17 of the battery is qualified, the tab of the battery is determined to be qualified, the qualified battery is transferred to the next station along with the conveyor belt 11, if at least one of the tab 17 of the battery is unqualified, the processor 18 sends out an NG alarm prompt to remind the unqualified battery to be taken down and isolated;
the processor 18 may automatically calculate the total number of detected batteries, the number of good and the number of bad, every day or every shift or every lot (lot), and may trace back the measurement results according to the scanned two-dimensional code.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A detection device for battery tab size and tab spacing is characterized by comprising:
A mounting frame;
the conveyor belt is arranged on the mounting frame, a light absorption layer is paved on the conveyor belt, a plurality of battery grooves are formed in the light absorption layer and are arranged along the transmission direction of the conveyor belt, and the battery grooves are used for placing batteries, wherein the light absorption layer is made of light absorption materials;
The laser transmitter and the photoelectric converter are sequentially arranged on the mounting frame along the transmission direction, the laser transmitter is used for transmitting laser beams to the surface of the conveyor belt, and the photoelectric converter is used for receiving light reflected by the lug when the laser beams irradiate the lug and converting the light reflected by the lug into an electric signal;
And the processor is used for calculating the tab size and the tab spacing of the battery tabs placed in the battery slots according to the time for starting to receive the electric signals, the time for stopping to receive the electric signals and the transmission speed of the conveyor belt for each battery slot, comparing the calculated tab size and tab spacing with corresponding standard sizes, and judging whether the tabs of the battery are qualified according to the comparison result.
2. The inspection apparatus of claim 1 wherein said laser transmitter is equidistant from said conveyor belt surface and said photoelectric converter is equidistant from said conveyor belt surface in a direction perpendicular to said transport direction.
3. The test device of claim 1, wherein the battery well comprises a well body for receiving a battery body, a first tab well for receiving a first tab of a battery, and a second tab well for receiving a second tab of the battery.
4. The test device of claim 1, wherein at least two of the plurality of battery wells are different in size.
5. The detecting device for detecting the rotation of a motor rotor as claimed in claim 1, wherein when the battery is inserted into the battery jar, a surface of the tab of the battery which is away from the bottom surface of the battery jar is not lower than a surface of the conveyor belt.
6. The detection device according to any one of claims 1 to 5, further comprising an automatic code scanning gun, wherein the automatic code scanning gun, the laser emitter and the photoelectric converter are sequentially arranged on the mounting frame along the transmission direction;
The automatic code scanning gun is in communication connection with the processor, and is used for scanning two-dimensional codes on batteries placed in the battery grooves aiming at each battery groove, and forming a corresponding relation between a result obtained by scanning and a tab detection result of the battery embedded in the battery groove.
7. The inspection device of claim 6, wherein the mounting frame includes a feed end and a discharge end, the direction of transport is from the feed end to the discharge end, and the automatic code scanning gun is mounted at the feed end.
8. The detection device of claim 1, wherein the light absorbing layer has a thickness of one half of the thickness of the cell.
9. A method for detecting the size and the spacing of battery tabs, which is applied to the detection device for the size and the spacing of battery tabs according to any one of claims 1 to 8, and comprises the following steps:
calculating the tab size and the tab spacing of the battery tabs embedded in each battery slot according to the time when the electric signals are started to be received, the time when the electric signals are stopped to be received and the transmission speed;
And comparing the calculated tab size and tab spacing with corresponding standard sizes respectively, and judging whether the tabs of the battery are qualified or not according to a comparison result.
10. The method of claim 9, wherein calculating the tab size and tab spacing of the battery tabs embedded in the battery can based on the time to start receiving the electrical signal, the time to stop receiving the electrical signal, and the transmission speed comprises:
determining a first duration according to the first time of starting to receive the electric signal and the first time of stopping to receive the electric signal, determining a second duration according to the first time of stopping to receive the electric signal and the second time of starting to receive the electric signal, and determining a third duration according to the second time of starting to receive the electric signal and the second time of stopping to receive the electric signal;
Determining the size of a first tab of the battery according to the first duration and the transmission speed of the conveyor belt, determining the size of a second tab of the battery according to the third duration and the transmission speed, and determining the tab spacing between the first tab and the second tab according to the second duration and the transmission speed.
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| CN119533289B (en) * | 2025-01-15 | 2025-04-18 | 宁德时代新能源科技股份有限公司 | Cell size measurement system and method |
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