CN116329128B - Appearance detection device and detection method for lithium battery cell - Google Patents
Appearance detection device and detection method for lithium battery cell Download PDFInfo
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- CN116329128B CN116329128B CN202310357654.9A CN202310357654A CN116329128B CN 116329128 B CN116329128 B CN 116329128B CN 202310357654 A CN202310357654 A CN 202310357654A CN 116329128 B CN116329128 B CN 116329128B
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- 238000001514 detection method Methods 0.000 title claims abstract description 109
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 108
- 238000000034 method Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000012216 screening Methods 0.000 claims description 7
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 10
- 230000007547 defect Effects 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000007723 transport mechanism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/38—Collecting or arranging articles in groups
-
- 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 relates to the technical field of lithium battery cell detection, in particular to an appearance detection device and a detection method for a lithium battery cell, wherein the appearance detection device for the lithium battery cell comprises the following components: the battery cell conveying device comprises a main body seat, wherein a conveying mechanism for conveying the battery cell is arranged at the upper end of the main body seat, the conveying mechanism comprises two conveying belts which are arranged side by side, and the two conveying belts are connected with the main body seat in a transmission mode through a driving piece. According to the detection device and the detection method for the appearance of the lithium battery cell, provided by the invention, the continuous conveying function of the cell is realized in the process of detecting the appearance of the cell by arranging the detection mechanism, and the clamping component is rotationally connected with the bottom plate, so that the clamping component can drive the cell to rotate when the conveying mechanism drives the clamping component to move into the detection mechanism, and the automatic adjustment function of the detection direction of the cell is realized.
Description
Technical Field
The invention relates to the field of lithium battery cell detection, in particular to an appearance detection device and method for a lithium battery cell.
Background
In the production and processing process of lithium batteries, the shell of the soft-packaged battery core is made of a soft composite material, so that the quality problems such as sinking, swelling and scratches are easy to occur on the surface of the battery core after the battery core is produced, and the quality problems of the appearance of the battery core are detected by using the battery core appearance detection device.
In the related art, a part of content related to a device for detecting the appearance of a battery cell is disclosed, for example, the disclosure is CN108188043a, and an appearance detection device and an appearance detection method for a lithium battery cell are provided, where the appearance device includes: conveying device, irradiation device, image acquisition device and sorting device.
The detection mode adopted by the battery cell appearance detection device has some defects in the actual application process, such as the process of detecting the appearance of the battery cell by using the conveying equipment, after the battery cell reaches the detection area, the battery cell needs to be overturned by the overturning equipment so that the detection equipment can comprehensively detect the appearance of the battery cell, but in the process of overturning the battery cell by using the overturning equipment, the battery cell is separated from the conveying equipment, so that the battery cell is inconvenient to continue to be conveyed, and the continuity of conveying the battery cell is influenced, so that the detection speed of the appearance of the battery cell is reduced, the single detection time is longer, and the battery cell appearance detection device cannot be well suitable for the use requirements of appearance detection of a large number of battery cells.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a device and a method for detecting the appearance of a lithium battery cell.
In order to achieve the above purpose, the invention adopts the following technical scheme: an appearance detection device for a lithium battery cell, comprising: the battery cell detection device comprises a main body seat, wherein the upper end of the main body seat is provided with a conveying mechanism for conveying battery cells, the conveying mechanism comprises two conveying belts which are arranged side by side, the two conveying belts are connected with the main body seat in a transmission way through a driving piece, the top of the conveying mechanism is provided with a detection mechanism for detecting the appearance of the battery cells, the conveying mechanism is uniformly provided with a plurality of clamp mechanisms for placing the battery cells, and the conveying mechanism drives the clamp mechanisms to circularly move;
the clamp mechanism comprises a bottom plate which is rotatably arranged between the two conveying belts, a clamping part used for clamping the battery cell is rotatably arranged on the bottom plate, a lifting part used for lifting the battery cell out of the clamping part is arranged on the clamping part, and the battery cell is driven to rotate together by the clamping part when the clamp mechanism moves along with the conveying mechanism.
Preferably, the clamping component comprises a rotary drum and two oppositely arranged toothed plates which vertically penetrate through and rotate on the bottom plate, a toothed ring is fixedly sleeved at the lower end of the outer side of the rotary drum and positioned below the bottom plate, the toothed plates are fixedly mounted at the upper end of the inner side wall of the main body seat, the upper end face of each toothed plate is in sliding fit with the lower end face of the bottom plate, one toothed segment on each toothed plate is arranged at an inlet position close to the detection mechanism, the other toothed segment on each toothed plate is arranged at an outlet position close to the detection mechanism, the rotary drum and the battery cells rotate together after the toothed ring moves to be meshed with the toothed plates, a plurality of telescopic holes are formed in an even circumferential array at the upper end of the side wall of the rotary drum, and clamping components used for clamping and fixing the battery cells are connected in the telescopic holes.
Preferably, the clamping assembly comprises a distance sensor and a push rod slidably mounted in the telescopic hole, the telescopic hole comprises a first mounting cavity and a second mounting cavity, the distance sensor is fixedly mounted on the side wall of the first mounting cavity of the telescopic hole, the push rod is located in the first mounting cavity of the telescopic hole, a contact block is fixedly mounted in the first mounting cavity after one end of the push rod, which is far away from the distance sensor, extends to the first mounting cavity of the telescopic hole, one end of the contact block, which is far away from the push rod, is slidably penetrated out of the end part of the telescopic hole, and a supporting spring is sleeved between the telescopic hole and the contact block.
Preferably, the lifting component comprises a threaded rod which is arranged at the center of the bottom wall of the rotary drum in a threaded manner, a top plate is fixedly arranged at the top end of the threaded rod, a limiting plate is fixedly arranged at the bottom end of the threaded rod after penetrating through the bottom wall of the rotary drum, two symmetrically arranged limiting rods are fixedly arranged at the bottom of the bottom plate, and two ends of each limiting plate are respectively slidably arranged at the outer sides of the two limiting rods.
Preferably, a plurality of movable grooves are formed in the upper end of the rotary drum, one side, away from the inner wall of the rotary drum, of the movable grooves is communicated with the bottom wall of the rotary drum through a gas circulation groove, gas is arranged in the gas circulation groove, the clamp mechanism further comprises a positioning component, the positioning component comprises a plurality of movable positioning pieces with elasticity and a plurality of first piston rods, the movable positioning pieces are correspondingly and slidably mounted in the movable grooves, a second piston rod is fixedly mounted on one side, away from the inner wall of the rotary drum, of the movable positioning pieces, one end, away from the movable positioning pieces, of the second piston rod is slidably connected with the gas circulation groove, a connecting spring is sleeved on the outer side of the second piston rod, and is located between the movable grooves and the positioning pieces, the first piston rod is slidably mounted at the bottom end of the gas circulation groove, and the top end of the first piston rod slidably penetrates through the bottom wall of the rotary drum.
Preferably, the detection mechanism comprises a light shield and an image collector for collecting appearance information of the battery cell, the light shield is fixedly installed at the top of the main body seat, the image collector is arranged at the top of the main body seat and is positioned in the light shield, a light supplementing lamp is fixedly installed on the top wall of the light shield, and a pushing assembly for screening out unqualified battery cells is fixedly arranged on the top wall of the light shield.
Preferably, the pushing assembly comprises a guiding-out bucket and an auxiliary support plate symmetrically and fixedly installed on the top wall of the light shield, two opposite sides of the auxiliary support plates are uniformly and parallelly rotated and provided with rollers, one of the auxiliary support plates is far away from one end of the image collector, the other auxiliary support plate is provided with an electric push rod fixedly installed at the bottom, a pushing plate corresponding to the through slot is fixedly installed at the telescopic end of the electric push rod, the guiding-out bucket is fixedly installed on the inner side of the light shield, an inlet at the upper end of the guiding-out bucket is aligned with the through slot, and the lower end of the guiding-out bucket penetrates through the outer side of the light shield.
Preferably, one side of the conveying belt, which is close to the image collector, is uniformly provided with tooth grooves, the bottom end of the image collector is rotatably installed at the top of the main body seat, the image collector comprises a triangular prism-shaped collector main body and three cameras, the three cameras are correspondingly distributed on three sides of the collector main body, gears are fixedly installed at the bottom end of the image collector rotating shaft, and the gears are meshed with the tooth grooves.
Preferably, the top plate is a circular plate, and the diameter of the top plate is smaller than that of the battery cell.
The detection method for the appearance of the lithium battery cell comprises the following steps:
s1, mounting the battery cell on the clamping part at the feeding end position of the main body seat by adopting manual operation or a mechanical arm;
s2, driving the clamp mechanism to move together through the conveying mechanism, and driving the battery cell to rotate together through forward rotation of the clamping part when the clamp mechanism moves into the detection mechanism, and simultaneously driving the lifting part to gradually lift the battery cell upwards so that the battery cell synchronously rises in the rotation process;
s3, acquiring information on the outer side of the battery cell in real time through the detection mechanism, judging whether the battery cell is qualified or not, screening the unqualified battery cell out of the clamp mechanism through the detection mechanism if the appearance of the battery cell is unqualified, and taking down the qualified battery cell manually or by a mechanical arm when the battery cell reaches a discharging position of the main body seat if the appearance of the battery cell is qualified;
and S4, driving the lifting component to move downwards for resetting through reverse rotation of the clamping component, and circularly moving along with the conveying mechanism.
Compared with the prior art, the invention has the following beneficial effects:
through setting up this detection mechanism, realized carrying out continuous transport function to the electric core at the in-process that carries out outward appearance detection to the electric core, through setting up the rotation connection between clamping part and the bottom plate, when conveying mechanism drives clamping part and removes to detection mechanism in, can make clamping part drive the electric core rotation, in order to realize the automatic adjustment function to the direction of detection of electric core, meanwhile, drive the lifting part with clamping part's turning force and jack-up the electric core, make the electric core also can expose gradually by the region of clamping, and then be caught by detection mechanism, in order to realize the comprehensive detection function to electric core outward appearance, and follow conveying mechanism throughout at whole detection in-process electric core and remove, the centre does not pause, in order to realize the continuous transport function to the electric core, be favorable to shortening the single detection duration to the electric core, accelerate detection speed, better be applicable to the detection demand of big electric core outward appearance in batches.
Drawings
Fig. 1 is a flowchart of a detection method for the appearance of a lithium battery cell provided by the invention.
Fig. 2 is a schematic structural diagram of the appearance detection device for a lithium battery cell provided by the invention.
Fig. 3 is a schematic structural diagram of the inside of the main body seat provided by the invention.
FIG. 4 is a schematic diagram showing the structure between the conveying mechanism and the clamping mechanism according to the present invention
Fig. 5 is a partial enlarged view of the region a shown in fig. 4.
Fig. 6 is a schematic structural diagram of a clamping mechanism provided by the present invention.
FIG. 7 is a cut-away view of a clamp mechanism provided by the present invention.
Fig. 8 is a partial enlarged view of the region B shown in fig. 7.
Fig. 9 is a partial enlarged view of the region C shown in fig. 7.
Fig. 10 is a schematic structural view of a clamping member according to the present invention.
Fig. 11 is a side view of the device for detecting the appearance of a lithium battery cell.
FIG. 12 is a cross-sectional view of the A-A plane shown in FIG. 11.
Fig. 13 is a schematic structural view of a pushing member provided by the present invention.
In the figure: 1. A main body seat; 2. a conveying mechanism; 21. a conveyor belt; 22. a driving member; 3. a detection mechanism; 23. tooth slots; 31. a light shield; 32. an image collector; 33. a light supplementing lamp; 34. a pushing assembly; 341. a guide hopper; 342. an auxiliary supporting plate; 343. a roller; 344. through the notch; 345. an electric push rod; 346. a pushing plate; 35. a gear; 4. a clamp mechanism; 41. a bottom plate; 42. a clamping member; 421. a rotating drum; 422. a toothed plate; 423. a toothed ring; 424. a telescopic hole; 425. a clamping assembly; 4251. a distance sensor; 4252. a push rod; 4253. a contact block; 4254. a support spring; 426. a movable groove; 427. a gas flow channel; 43. a lifting member; 431. a threaded rod; 432. a top plate; 433. a limiting plate; 434. a limit rod; 44. a positioning member; 441. a movable positioning member; 442. a first piston rod; 443. a second piston rod; 444. a connecting spring; 5. and a battery cell.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Referring to fig. 1 to 13, an appearance detection device for a lithium battery cell includes: the battery cell testing device comprises a main body seat 1, wherein a conveying mechanism 2 for conveying a battery cell 5 is arranged at the upper end of the main body seat 1, the conveying mechanism 2 comprises two conveying belts 21 which are arranged side by side, the two conveying belts 21 are connected with the main body seat 1 in a transmission way through a driving piece 22, a detecting mechanism 3 for detecting the appearance of the battery cell 5 is arranged at the top of the conveying mechanism 2, twelve clamp mechanisms 4 for placing the battery cell 5 are uniformly distributed on the conveying mechanism 2, and the conveying mechanism 2 drives the twelve clamp mechanisms 4 to circularly move;
the clamp mechanism 4 comprises a bottom plate 41 rotatably arranged between the two conveying belts 21, a clamping part 42 for clamping the battery cell 5 is rotatably arranged on the bottom plate 41, a lifting part 43 for ejecting the battery cell 5 from the clamping part 42 is arranged on the clamping part 42, and when the clamp mechanism 4 moves along with the conveying mechanism 2, the battery cell 5 is driven to rotate together through the clamping part 42.
In order to solve the problem that in the appearance detection process of the battery cell 5, the battery cell 5 is conveyed and is interrupted due to the fact that the detection direction of the battery cell 5 is adjusted, the appearance detection device of the lithium battery cell 5 is provided to solve the problem, when the appearance detection device is used, the battery cell 5 to be detected is installed on the clamping component 42 through manual operation or a mechanical arm, then the clamping component 42, the battery cell 5 and the lifting component 43 are driven to move together through the conveying mechanism 2, after the clamping component 42 moves to the position of the detecting mechanism 3, the clamping component 42 starts to positively rotate, the battery cell 5 rotates together with the clamping component 42, meanwhile, the lifting component 43 is driven to move upwards through rotation of the clamping component 42, the battery cell 5 is gradually jacked upwards, and the appearance of the battery cell 5 which rotates and gradually moves upwards is subjected to image acquisition through the detecting mechanism 3, because the battery cell 5 gradually moves upwards and rotates, the detecting mechanism 3 can comprehensively collect appearance information of the battery cell 5, and the battery cell 5 always moves along with the conveying mechanism 2 in the detection process, whether the appearance information acquired by the detecting mechanism 3 accords with the appearance information of the battery cell 5, and whether the appearance of the battery cell 5 accords with the manual operation criterion or not can be judged through manual operation or not, and the manual operation of taking out the battery cell 5 from the detecting mechanism 3 after the battery cell 5 is directly passed through the detecting mechanism;
through setting up this detection mechanism 3, realized carrying out continuous transport function to electric core 5 in the in-process that carries out outward appearance and detect electric core 5, through setting up rotating connection between clamping part 42 and the bottom plate 41, when transport mechanism 2 drove clamping part 42 and remove to detection mechanism 3 in, can make clamping part 42 drive electric core 5 rotation, in order to realize the automatic adjustment function to the direction of detection of electric core 5, simultaneously, drive lifting part 43 with clamping part 42's rotation force jack-up electric core 5, make electric core 5 by the region of holding also expose gradually, and then be caught by detection mechanism 3, in order to realize the comprehensive detection function to electric core 5 outward appearance, and follow transport mechanism 2 throughout in the whole detection process, there is not the pause in the middle, in order to realize the continuous transport function to electric core 5, be favorable to shortening the single detection duration to electric core 5, accelerate the detection speed, better be applicable to the detection demand of big electric core 5 outward appearance.
As an embodiment of the present invention, the clamping member 42 includes a drum 421 vertically penetrating and rotatably mounted on the bottom plate 41 and two oppositely disposed toothed plates 422, a toothed ring 423 is fixedly sleeved at the lower end of the outer side of the drum 421 and located below the bottom plate 41, the toothed plates 422 are fixedly mounted at the upper end of the inner side wall of the main body seat 1, the upper end surface of the toothed plate 422 is slidably attached to the lower end surface of the bottom plate 41, a tooth segment on one toothed plate 422 is disposed at an inlet position close to the detection mechanism 3, a tooth segment on the other toothed plate 422 is disposed at an outlet position close to the detection mechanism 3, after the toothed ring 423 moves to engage with the toothed plate 422, the drum 421 and the battery cell 5 rotate together, a plurality of telescopic holes 424 are uniformly circumferentially arrayed at the upper end of the side wall of the drum 421, and a clamping assembly 425 for clamping and fixing the battery cell 5 is slidably disposed in the telescopic holes 424.
When the clamping component 42 is used, the battery cell 5 is directly inserted into the inner side of the rotary drum 421, the diameter of the battery cell 5 is slightly smaller than the inner diameter of the rotary drum 421, so that the battery cell 5 can be smoothly inserted into the rotary drum 421, then the battery cell 5 can be clamped and fixed by contacting the clamping component 425 with the outer side of the battery cell 5, so that the battery cell 5 is kept in a stable state in the rotary drum 421, and when the toothed ring 423 is meshed with the first toothed plate 422, the toothed ring 423 can rotate along the first toothed plate 422 due to the horizontal movement of the rotary drum 421 driven by the conveying mechanism 2, and the rotary drum 421 and the battery cell 5 are driven to rotate together, so that the function of adjusting the detection direction of the battery cell 5 is realized;
through setting up this clamping part 42, except being used for carrying out centre gripping fixed action to electric core 5, can also follow the function of the mobile in-process of conveying mechanism 2 drive electric core 5 autorotation to realize adjusting electric core 5 detection direction, and this kind of adoption adjustment mode has replaced traditional upset mode, need not to let electric core 5 break away from conveying mechanism 2, in order to realize the continuous transport function to electric core 5, be favorable to shortening to electric core 5 outward appearance detection duration, in order to promote the bulk speed to electric core 5 detection.
As an embodiment of the present invention, the clamping assembly 425 includes a distance sensor 4251 and a push rod 4252 slidably mounted in the telescopic hole 424, the telescopic hole 424 includes a first mounting cavity and a second mounting cavity, the distance sensor 4251 is fixedly mounted on a side wall of the first mounting cavity of the telescopic hole 424, the push rod 4252 is located in the first mounting cavity of the telescopic hole 424, a contact block 4253 is fixedly mounted after an end of the push rod 4252 away from the distance sensor 4251 extends into the first mounting cavity of the telescopic hole 424, an end of the contact block 4253 away from the push rod 4252 slides through an end of the telescopic hole 424, and a supporting spring 4254 is sleeved outside the push rod 4252 and between the telescopic hole 424 and the contact block 4253.
For the fine defects existing on the surface of the battery cell 5, the judgment of collecting the surface information of the battery cell 5 by the detection mechanism 3 is not accurate enough, so that the detection precision of the battery cell 5 is improved by arranging the clamping assembly 425;
when the clamping assembly 425 is used, the battery core 5 starts to be inserted into the rotary drum 421, when the outer side of the battery core 5 is contacted with the contact block 4253, the contact block 4253 can be extruded to shrink due to the arc shape of the end part of the contact block 4253, the battery core 5 can move downwards continuously, the ejector rod 4252 moves along with the contact block 4253 and approaches to the distance sensor 4251, if the outer side of the battery core 5 bulges, the contact block 4253 can be extruded to shrink when the bulge contacts with the end part of the contact block 4253, the ejector rod 4252 approaches to the distance sensor 4251 further, the ejector rod 4252 is provided with a through hole, when the ejector rod 4252 slides in the second cavity, the air in the ejector rod 4252 is prevented from being compressed, the ejector rod 4252 can slide smoothly, the position of the ejector rod 4252 is monitored by the distance sensor 4251, if the position of the ejector rod 4252 is determined to bulge, and if the outer side of the battery core 5 is concave, under the action of the elastic force of the supporting spring 4254, the contact block 4253 can extend into the recess, at the moment, the ejector rod 4252 can be driven to be far away from the distance sensor 4251, the distance sensor 4251 detects that the ejector rod 4252 is far away gradually, the position can be determined to be the recess, then the distance sensor 4251 sends the information to the processor, the processor judges whether the battery cell 5 is qualified or not until the battery cell 5 is completely inserted into the rotary drum 421, the first detection operation of the battery cell 5 is completed, and as the battery cell 5 is gradually inserted downwards from the upper end of the rotary drum 421, the contact block 4253 can be sequentially contacted with different positions outside the battery cell 5 to realize the comprehensive detection function of the outside of the battery cell 5, and under the contact action of a plurality of the contact blocks 4253 and the battery cell 5, the battery cell 5 can be clamped and fixed, so that the battery cell 5 can be stably installed in the rotary drum 421;
through setting up this clamping component 425, except carrying out centre gripping fixed action to electric core 5, detect the position change condition of ejector pin 4252 through increasing distance sensor 4251, as the basis that the processor judges whether electric core 5 outside is leveled for this clamping component 425 still can regard as detecting electric core 5 outside defect contact detection structure to use, makes clamping component 42 possess the subtle defect detection function to electric core 5 outside, and then is favorable to promoting the detection precision of whole electric core 5 outward appearance detection device.
As an embodiment of the present invention, the lifting member 43 includes a threaded rod 431 screwed at the center of the bottom wall of the drum 421, a top plate 432 is fixedly installed at the top end of the threaded rod 431, a limiting plate 433 is fixedly installed at the bottom end of the threaded rod 431 after penetrating through the bottom wall of the drum 421, two symmetrically arranged limiting rods 434 are fixedly installed at the bottom of the bottom plate 41, and two ends of the limiting plate 433 are respectively slidably installed at the outer sides of the two limiting rods 434.
Since the battery cell 5 is inserted into the rotary drum 421, the battery cell 5 is already wrapped in the rotary drum 421 when the outside of the battery cell 5 is detected, in order to ensure that the outside of the battery cell 5 can be captured by the detection mechanism 3, the battery cell 5 is gradually jacked up by providing the lifting part 43;
when the lifting part 43 is used, as the threaded rod 431 is limited by the limiting plate 433 and the limiting rod 434, when the rotary drum 421 rotates, the threaded rod 431, the top plate 432 and the limiting rod 434 can be driven to move upwards together, the battery cell 5 is gradually moved upwards under the upward thrust action of the top plate 432, the outer side of the battery cell 5 is gradually exposed outwards, then the information on the outer side of the battery cell 5 is captured by the detection mechanism 3 until the rotary drum 421 stops rotating, the top plate 432 just enables the battery cell 5 to jack up to the top end position of the rotary drum 421, and the battery cell 5 is completely exposed outwards, so that the detection mechanism 3 can comprehensively collect the information on the outer side of the battery cell 5;
through setting up this lifting part 43, mainly used lifts up electric core 5 in carrying out outward appearance detection process to electric core 5, on the one hand can make detection mechanism 3 can be comprehensive collect electric core 5 outside information to guarantee detection mechanism 3's detection precision, on the other hand, in lifting part 43 jack-up electric core 5 in-process, can make electric core 5 outside again with clamping component 425 sliding contact, can make clamping component 425 carry out the contact detection operation of secondary to electric core 5, be favorable to promoting clamping component 425's detection precision.
As an embodiment of the present invention, four movable slots 426 are formed at the upper end of the drum 421, one side of the movable slots 426 far from the inner wall of the drum 421 is communicated with the bottom wall of the drum 421 through a gas circulation slot 427, a gas is arranged in the gas circulation slot 427, the clamp mechanism 4 further comprises a positioning component 44, the positioning component 44 comprises four elastic movable positioning elements 441 and four first piston rods 442, the movable positioning elements 441 are correspondingly and slidably mounted in the movable slots 426, one side of the movable positioning elements 441 far from the inner wall of the drum 421 is fixedly provided with a second piston rod 443, one end of the second piston rod 443 far from the movable positioning elements 441 is slidably connected with the gas circulation slot 427, a connecting spring 444 positioned between the movable slots 426 and the positioning elements is sleeved outside the second piston rod 443, the first piston rods 442 are slidably mounted at the bottom ends of the gas circulation slot 427, and the top ends of the first piston rods 442 slidably penetrate through the bottom wall of the drum 421;
the end of the movable positioning piece 441 far away from the movable groove 426 can be made of rubber material, so that abrasion to the outer side of the battery cell 5 is avoided when the movable positioning piece 441 is contacted with the battery cell 5, and the upper end of the movable positioning piece 441 is set to be in a downward inclined state, so that the movable positioning piece 441 is convenient to contact with the battery cell 5.
In the process of inserting the battery cell 5 into the rotary drum 421, since the clamping assembly 425 is used for contacting the outer side of the battery cell 5 to perform an outer side flatness detection mode, the battery cell 5 needs to be kept in an accurate alignment state with the rotary drum 421 during insertion, and the alignment precision between the battery cell 5 and the rotary drum 421 is improved by arranging the positioning component 44;
when the positioning component 44 is used, the battery cell 5 starts to be inserted into the rotary drum 421, the bottom end of the battery cell 5 is firstly contacted with the inclined plane outside the movable positioning component 441, if the position between the battery cell 5 and the rotary drum 421 is not exactly aligned, the movable positioning component 441 can correct the position of the battery cell 5 under the mutual extrusion action of the two, so that the battery cell 5 can be aligned with the rotary drum 421 and can smoothly pass through the movable positioning component 441 to be contacted with the clamping component 425, and the first appearance flatness detection is carried out on the battery cell 5;
in the process of ejecting the battery cell 5 by the lifting part 43, the top plate 432 moves upwards, so that the pressure of the bottom of the battery cell on the second piston rod 443 is gradually reduced, at the moment, under the action of the elastic force of the connecting spring 444, the first piston rod 442 and the movable positioning member 441 can be driven to gradually reset, the gas in the gas circulation groove 427 is pushed downwards by the first piston rod 442, the pushed gas can push the second piston rod 443 to move upwards, and when the upper end of the battery cell 5 is about to reach the position of the movable positioning member 441, the movable positioning member 441 is in the maximum contraction state, so that the battery cell 5 cannot be contacted again;
by arranging the positioning component 44, on one hand, in the process of inserting the battery cell 5 into the rotary drum 421, the position of the battery cell 5 can be corrected, so that the alignment between the battery cell 5 and the rotary drum 421 can be promoted, thereby being beneficial to improving the detection precision of the clamping component 425, meanwhile, through the sliding contact between the movable positioning piece 441 and the outer side of the battery cell 5, the impurities such as dust and particles adsorbed on the outer side of the battery cell 5 can be scraped, the detection precision of the clamping component 425 is prevented from being influenced by the impurities, and the detection precision of the clamping component 425 is further improved;
on the other hand, through the cooperation use between locating part 44 and lifting part 43, utilize roof 432 activity as the flexible power supply of control locating part 44, can avoid movable setting element 441 and electric core 5 outside secondary contact in lifting part 43 with electric core 5 jack-up in-process, so not only can avoid the impurity that is scraped off to shift the electric core 5 outside again, and lead to electric core 5 outside by secondary pollution, can also avoid causing the hindrance to electric core 5 in-process that moves up for lifting part 43 can be smooth with electric core 5 jack-up.
As an embodiment of the invention, the detection mechanism 3 comprises a light shield 31 and an image collector 32 for collecting appearance information of the electric core 5, the light shield 31 is fixedly arranged at the top of the main body seat 1, the image collector 32 is arranged at the top of the main body seat 1 and is positioned in the light shield 31, a light supplementing lamp 33 is fixedly arranged on the top wall of the light shield 31, and a pushing component 34 for screening out unqualified electric cores 5 is fixedly arranged on the top wall of the light shield 31.
When the detecting mechanism 3 is used, the battery cell 5 moves to the inside of the light shield 31 along with the clamp mechanism 4, at the moment, the brightness of the inside of the light shield 31 is increased through the light supplementing lamp 33, the battery cell 5 gradually rises and rotates under the action of the clamping component 42 and the lifting component 43, information on the outer side of the battery cell 5 is captured in real time through the image collector 32 and is transmitted to a peripheral processor, the processor judges whether defects exist on the outer side of the battery cell 5 according to the information, when the disqualification of the battery cell 5 is detected, the battery cell 5 is pushed out of the top of the rotary drum 421 through the pushing component 34, and the qualified battery cell 5 continues to move to the blanking position of the main body seat 1 along with the conveying mechanism 2.
As an embodiment of the present invention, the pushing assembly 34 includes a guiding-out bucket 341 and auxiliary supporting plates 342 symmetrically and fixedly installed on the top wall of the light-shielding cover 31, the opposite sides of the two auxiliary supporting plates 342 are respectively and uniformly rotatably installed with a roller 343, one end of one auxiliary supporting plate 342 far away from the image collector 32 is provided with a through slot 344, the bottom of the other auxiliary supporting plate 342 is fixedly installed with an electric push rod 345, the telescopic end of the electric push rod 345 is fixedly installed with a pushing plate 346 corresponding to the through slot 344, the guiding-out bucket 341 is fixedly installed on the inner side of the light-shielding cover 31, the inlet at the upper end of the guiding-out bucket 341 is aligned with the through slot 344, and the lower end of the guiding-out bucket 341 penetrates the outer side of the light-shielding cover 31.
When an unqualified battery cell 5 is detected, the unqualified battery cell 5 needs to be automatically screened out, the function is realized by arranging the pushing component 34, when the battery cell is used, after the detection mechanism 3 collects all outside information of the battery cell 5, the processor starts to judge whether the battery cell 5 is qualified, at the moment, the battery cell 5 is jacked to the top end position of the rotary drum 421, the battery cell 5 is not limited by the rotary drum 421 any more, the battery cell 5 just enters between the two auxiliary support plates 342, the auxiliary support plates 342 continue to provide support for the battery cell 5, the battery cell 5 is prevented from toppling over when moving, the friction force between the battery cell 5 and the auxiliary support plates 342 can be reduced through the contact of the rotary drum 343, the resistance born by the battery cell 5 is smaller, and the battery cell 5 can stably move along with the rotary drum 421;
when the unqualified battery cell 5 reaches the position passing through the notch 344, the processor starts to control the electric push rod 345 to extend, so that the push plate 346 is in contact with the battery cell 5, the battery cell 5 enters the guide-out hopper 341 from the notch 344 and is finally discharged from the guide-out hopper 341, the screening operation is completed, the qualified battery cell 5 can continue to move along with the rotary drum 421 and smoothly pass through the light shield 31 to reach the discharging position of the main body seat 1, and finally the qualified battery cell 5 is taken down.
As one embodiment of the invention, one side of one conveyor belt 21, which is close to the image collector 32, is uniformly provided with tooth grooves 23, the bottom end of the image collector 32 is rotatably arranged at the top of the main body seat 1, the image collector 32 comprises a triangular prism-shaped collector main body and three cameras, the three cameras are correspondingly distributed on three sides of the collector main body, the bottom end of a rotating shaft of the image collector 32 is fixedly provided with a gear 35, and the gear 35 is meshed with the tooth grooves 23.
Because the battery cell 5 is moving all the time, in order to facilitate the image collector 32 to better capture the information outside the battery cell 5, the image collector 32 is further arranged in a form capable of following the rotation of the battery cell 5;
when the conveying mechanism 2 drives the battery cells 5 to move, due to the operation of the conveying belt 21, the tooth grooves 23 drive the gears 35 to rotate, the image collectors 32 gradually rotate along with the gears 35, and then the image collectors 32 follow the collection function is realized, because the tooth grooves 23 and the gears 35 are adaptively set according to the conveying speed of the conveying belt 21, and the distance between the two battery cells 5 is fixed, although the conveying belt 21 continuously operates, the image collectors 32 are always in a rotating state, due to the fact that three evenly distributed cameras are arranged on the image collectors 32, the first camera can be enabled to reach the first camera position after the last battery cell 5 rotates until the following action is finished, and the next battery cell 5 continues to rotate, so that the continuous following action of the battery cells 5 is realized, and the detection precision of the detection mechanism 3 is improved.
As an embodiment of the present invention, the top plate 432 is configured as a circular plate, and the diameter of the top plate 432 is smaller than that of the battery cell 5, so that the top plate 432 is prevented from contacting the contact block 4253 to affect the detection accuracy in the process of ejecting the battery cell 5 by the top plate 432.
In addition, the invention also provides a detection method for the appearance of the lithium battery cell 5, which comprises the following steps:
s1, at the feeding end position of a main body seat 1, a manual or mechanical arm is adopted to install a battery cell 5 on a clamping part 42;
s2, driving the clamp mechanism 4 to move together through the conveying mechanism 2, and driving the battery cell 5 to rotate together through forward rotation of the clamping part 42 when the clamp mechanism 4 moves into the detection mechanism 3, and simultaneously driving the lifting part 43 to gradually lift the battery cell 5 upwards, so that the battery cell 5 synchronously rises in the rotation process;
s3, acquiring information on the outer side of the battery cell 5 in real time through the detection mechanism 3, judging whether the battery cell 5 is qualified or not, screening the unqualified battery cell 5 out of the clamp mechanism 4 through the detection mechanism 3 if the appearance of the battery cell 5 is unqualified, and taking down the qualified battery cell 5 through manual or mechanical hands when the battery cell 5 reaches the blanking position of the main body seat 1 if the appearance of the battery cell 5 is qualified;
and S4, after the clamping part 42 rotates reversely, the lifting part 43 can be driven to move downwards for resetting and move circularly along with the conveying mechanism 2.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, but rather, the foregoing embodiments and description illustrate the principles of the invention, and that various changes and modifications may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (6)
1. An appearance detection device for a lithium battery cell, comprising: the battery cell testing device is characterized in that a plurality of clamp mechanisms (4) used for placing the battery cells (5) are uniformly distributed on the conveying mechanism (2), and the conveying mechanism (2) drives a plurality of clamp mechanisms (4) to circularly move;
the clamp mechanism (4) comprises a bottom plate (41) rotatably arranged between the two conveying belts (21), a clamping part (42) for clamping the battery cell (5) is rotatably arranged on the bottom plate (41), a lifting part (43) for ejecting the battery cell (5) from the clamping part (42) is arranged on the clamping part (42), and when the clamp mechanism (4) moves along with the conveying mechanism (2), the battery cell (5) is driven to rotate together by the clamping part (42);
the clamping component (42) comprises a rotary drum (421) and two oppositely arranged toothed plates (422) which are vertically and rotatably arranged on the bottom plate (41), wherein the lower end of the outer side of the rotary drum (421) is fixedly sleeved with a toothed ring (423) and positioned below the bottom plate (41), the toothed plates (422) are fixedly arranged at the upper end of the inner side wall of the main body seat (1), the upper end surface of each toothed plate (422) is in sliding fit with the lower end surface of the bottom plate (41), one toothed segment on each toothed plate (422) is arranged at an inlet position close to the detection mechanism (3), the other toothed segment on each toothed plate (422) is arranged at an outlet position close to the detection mechanism (3), after the toothed ring (423) moves to be meshed with the toothed plate (422), the rotary drum (421) and the electric core (5) are enabled to rotate together, a plurality of telescopic holes (424) are uniformly formed in a circumferential array at the upper end of the side wall of the rotary drum (421), and the telescopic holes (424) are connected with the electric core (425) for fixing and clamping the electric core (425) in a clamping assembly;
the clamping assembly (425) comprises a distance sensor (4251) and a push rod (4252) which is slidably mounted in the telescopic hole (424), the telescopic hole (424) comprises a first mounting cavity and a second mounting cavity, the distance sensor (4251) is fixedly mounted on the side wall of the first mounting cavity of the telescopic hole (424), the push rod (4252) is positioned in the first mounting cavity of the telescopic hole (424), a contact block (4253) is fixedly mounted after one end of the push rod (4252) far away from the distance sensor (4251) extends into the first mounting cavity of the telescopic hole (424), one end of the contact block (4253) far away from the push rod (4252) penetrates out of the end of the telescopic hole (424) in a sliding manner, and a supporting spring (4254) is sleeved outside the push rod (4252) and between the telescopic hole (424) and the contact block (4253);
the lifting component (43) comprises a threaded rod (431) which is arranged in the center of the bottom wall of the rotary drum (421) in a threaded manner, a top plate (432) is fixedly arranged at the top end of the threaded rod (431), a limiting plate (433) is fixedly arranged after the bottom thread of the threaded rod (431) penetrates through the bottom wall of the rotary drum (421), two symmetrically arranged limiting rods (434) are fixedly arranged at the bottom of the bottom plate (41), and two ends of the limiting plate (433) are respectively and slidably arranged at the outer sides of the two limiting rods (434);
the upper end of rotary drum (421) has seted up a plurality of movable grooves (426), one side of movable groove (426) keeping away from rotary drum (421) inner wall with through gas circulation groove (427) intercommunication between the diapire of rotary drum (421), be equipped with gas in gas circulation groove (427), fixture mechanism (4) still include locating part (44), locating part (44) include a plurality of movable locating part (441) and a plurality of first piston rod (442), movable locating part (441) correspond slidable mounting in movable groove (426), one side fixed mounting that movable locating part (441) kept away from rotary drum (421) inner wall has second piston rod (443), one end that movable locating part (441) was kept away from to second piston rod (443) with gas circulation groove (427) sliding connection, the outside cover of second piston rod (443) is equipped with be located movable groove (426) with coupling spring (444) between the locating part, first piston rod (442) slidable mounting is in movable groove (426), the diapire of first piston rod (442) is passed through.
2. The device for detecting the appearance of a lithium battery cell according to claim 1, wherein the detecting mechanism (3) comprises a light shield (31) and an image collector (32) for collecting appearance information of the cell (5), the light shield (31) is fixedly installed at the top of the main body seat (1), the image collector (32) is arranged at the top of the main body seat (1) and is positioned in the light shield (31), a light supplementing lamp (33) is fixedly installed on the top wall of the light shield (31), and a pushing assembly (34) for screening out unqualified cells (5) is fixedly arranged on the top wall of the light shield (31).
3. The device for detecting the appearance of a lithium battery cell according to claim 2, wherein the pushing assembly (34) comprises a guiding-out bucket (341) and auxiliary support plates (342) symmetrically and fixedly installed on the top wall of the light shielding cover (31), rollers (343) are installed on opposite sides of the two auxiliary support plates (342) in a side-by-side and uniform rotation mode, a through notch (344) is formed in one end, away from the image collector (32), of one auxiliary support plate (342), an electric push rod (345) is fixedly installed at the bottom of the other auxiliary support plate (342), a pushing plate (346) corresponding to the through notch (344) is fixedly installed at the telescopic end of the electric push rod (345), the guiding-out bucket (341) is fixedly installed on the inner side of the light shielding cover (31), an upper end of the guiding-out bucket (341) is aligned with the through notch (344), and the lower end of the guiding-out bucket (341) penetrates through the outer side of the light shielding cover (31).
4. The appearance detection device for the lithium battery cell according to claim 2, wherein one side, close to the image collector (32), of the conveying belt (21) is uniformly provided with tooth grooves (23), the bottom end of the image collector (32) is rotatably installed at the top of the main body seat (1), the image collector (32) comprises a collector main body in a triangular prism shape and three cameras, the three cameras are correspondingly distributed on three side surfaces of the collector main body, the bottom end of a rotating shaft of the image collector (32) is fixedly provided with a gear (35), and the gear (35) is meshed with the tooth grooves (23).
5. The appearance detection device for a lithium battery cell according to claim 1, wherein the top plate (432) is provided as a circular plate, and the diameter of the top plate (432) is smaller than the diameter of the cell (5).
6. A method for detecting the appearance of a lithium battery cell, which is applicable to the device for detecting the appearance of a lithium battery cell according to any one of claims 1 to 5, and is characterized by comprising the following steps:
s1, at the feeding end position of the main body seat (1), the battery cell (5) is arranged on the clamping part (42) by adopting manual operation or a mechanical arm;
s2, driving the clamp mechanism (4) to move together through the conveying mechanism (2), and driving the battery cell (5) to rotate together through forward rotation of the clamping component (42) when the clamp mechanism (4) moves into the detection mechanism (3), and simultaneously driving the lifting component (43) to gradually lift the battery cell (5) upwards, so that the battery cell (5) synchronously rises in the rotating process;
s3, acquiring information on the outer side of the battery cell (5) in real time through the detection mechanism (3), judging whether the battery cell (5) is qualified or not, screening the unqualified battery cell (5) out of the clamp mechanism (4) through the detection mechanism (3) if the appearance of the battery cell (5) is unqualified, and taking down the qualified battery cell (5) through manual operation or a mechanical arm when the battery cell (5) reaches the blanking position of the main body seat (1) if the appearance of the battery cell (5) is qualified;
and S4, driving the lifting component (43) to move downwards for resetting through the reverse rotation of the clamping component (42), and circularly moving along with the conveying mechanism (2).
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| CN218298164U (en) * | 2022-10-08 | 2023-01-13 | 辽宁光华酿造有限公司 | Nitrogen content detection mechanism for soy sauce products |
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| JP2008008897A (en) * | 2006-06-02 | 2008-01-17 | Taizo Yamamoto | Front and back face appearance inspecting apparatus, side-face appearance inspecting apparatus and appearance inspecting apparatus of tablet |
| CN106733734A (en) * | 2017-01-16 | 2017-05-31 | 无锡先导智能装备股份有限公司 | Screening plant |
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