CN116678754B - Method and testing device for laser etching of cylindrical battery stainless steel shell explosion-proof wire - Google Patents
Method and testing device for laser etching of cylindrical battery stainless steel shell explosion-proof wire Download PDFInfo
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- CN116678754B CN116678754B CN202310959673.9A CN202310959673A CN116678754B CN 116678754 B CN116678754 B CN 116678754B CN 202310959673 A CN202310959673 A CN 202310959673A CN 116678754 B CN116678754 B CN 116678754B
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 74
- 239000010935 stainless steel Substances 0.000 title claims abstract description 74
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000010329 laser etching Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005530 etching Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 73
- 238000005422 blasting Methods 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 235000012431 wafers Nutrition 0.000 abstract 1
- 238000004880 explosion Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a method and a testing device for laser etching of a stainless steel shell explosion-proof line of a cylindrical battery, and relates to the field of battery shell explosion-proof valve production. A method for laser etching a stainless steel shell explosion-proof wire of a cylindrical battery mainly comprises the following steps of: step one, confirming a sample etching position: after the product is placed, a large-view pseudo-coaxial camera shoots a circular outline of the tank bottom, a marking position is generated, the coaxial ranging can measure the height of the stainless steel shell, and the position of the focus is adjusted up and down according to the measured height value; compared with the mode of carrying out burst pressure test by adopting gas transmission pressurization in the prior art, when the burst pressure value test is carried out on the battery stainless steel shell, the method can not only improve the tightness of the sample stainless steel shell and ensure the accuracy of the test pressure value, but also buffer and collect wafers separated from the bottom of the stainless steel shell during the burst, reduce the impact force of the burst and effectively improve the safety during the burst pressure value test.
Description
Technical Field
The invention belongs to the technical field of battery case explosion-proof valve production, and particularly relates to a method and a testing device for laser etching of a cylindrical battery stainless steel case explosion-proof line.
Background
The whole space of the finished cylindrical battery is sealed by the anode electrode material and the cathode electrode material in the stainless steel tank body, and if special accidents or accidents, such as spontaneous combustion, occur, atmospheric pressure is formed in the sealed space in a short time, so that the explosion is very likely to cause safety accidents and the safety is very dangerous; to prevent such accidents, an explosion-proof valve is etched on a stainless steel housing, which has been an important process in a new energy battery.
The main principle of the process is that a circular groove is etched at the bottom of the shell, the depth of the groove determines the blasting air pressure value, the thicker the thickness is, the larger the blasting air pressure value is, the thinner the thickness is, and the smaller the blasting air pressure value is, and the current requirement is controlled to be about 0.8-1 mpa; therefore, before formal production, products with different thicknesses, such as products with 0.5mm and 0.6mm, are required to be subjected to laser etching, the etching depths are different corresponding to the same 1mpa blasting air pressure, pressurized blasting is performed at a certain etching depth, and if the blasting air pressure is too large, the groove depth is too shallow, and the etching depth is required to be increased; if the blasting air pressure is too small, the groove depth is too deep, the etching depth needs to be reduced, and finally, corresponding laser etching parameters are saved according to the blasting result and the stability.
The traditional explosion-proof pressure test method mostly adopts an air pressure test of opening sealing, the opening of the battery shell is sealed by adopting a rubber pad and is clamped by a clamp, so that the opening is sealed, however, the area of the rubber pad is larger, the sealing effect is not ideal, air leakage can occur, the test accuracy is affected, and meanwhile, a wafer separated from the bottom of the stainless steel shell during blasting can splash around due to larger pressure, so that staff can be hurt, and the safety is required to be further improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method and a testing device for photoetching a stainless steel shell explosion-proof wire of a cylindrical battery, which can overcome or at least partially solve the problems.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that: a method for laser etching a stainless steel shell explosion-proof wire of a cylindrical battery mainly comprises the following steps of:
step one, confirming a sample etching position:
after the product is placed, a large-view pseudo-coaxial camera shoots a circular outline of the tank bottom, a marking position is generated, the coaxial ranging can measure the height of the stainless steel shell, and the position of the focus is adjusted up and down according to the measured height value;
step two, etching a sample tank body:
matching the preset laser parameters with the expected depth, and then controlling an infrared high-power laser to etch the circular groove of the tank body;
step three, detecting the groove depth of the sample:
after marking, the groove cutting position is moved below a sensor for measuring depth, the tank body is rotated for one circle, then a continuous change curve of the groove depth of the whole groove ring can be measured, and whether the product meets the requirement is judged;
step four, sample testing:
placing the tank bodies with different groove depths between each group of two clamping sheets in sequence, controlling the sealing air bags to move into the tank bodies to seal the tank bodies, then performing water-through pressurized blasting on the tank bodies, and when the tank bottoms of the tank bodies are blasted, the pressure measured by the pressure gauge is the blasting pressure value of the tank bodies;
fifthly, formally producing:
and (3) setting the proper groove depth value data measured in the step four into specified laser parameters so as to match the expected depth of the position, and then repeating the operation flow in the step two and the step three to produce the finished product.
A testing device for a laser etching cylinder battery stainless steel shell explosion-proof line is used for a method for laser etching the cylinder battery stainless steel shell explosion-proof line, and comprises a water tank and further comprises the following steps: the bracket is fixedly arranged on the water tank; the mounting plate is arranged on the bracket; a plurality of mounting openings are formed in the mounting plate at equal intervals, and the clamping pieces are symmetrically arranged in the mounting openings; the pneumatic tensioning assembly is used for controlling the clamping piece to clamp the tank body and is arranged on the mounting plate; the lifting plate is connected to the bracket above the mounting plate in a sliding manner; the pneumatic lifting assembly is used for controlling the lifting plate to move up and down, is arranged on the bracket and is connected with the pneumatic tensioning assembly; the water pipe is fixedly connected to the lifting plate and is positioned right above the mounting plate; the sealing air bag is fixedly connected to the lifting plate at the lower end of the water pipe and communicated with the water pipe, and a pressure valve is arranged in the water outlet head of the sealing air bag; the pressure gauge is fixedly arranged on the water pipe, and the detection end extends into the water pipe.
In order to be convenient for control lifter plate goes up and down, still further, pneumatic lifting assembly includes the inflator, has piston rod, tension spring and three-way pipe of piston, inflator symmetry fixed connection is in the upper end both sides of support, piston rod sliding connection is in the inflator, tension spring sets up in the inflator, tension spring's both ends respectively with the upper end of inflator, piston rod fixed connection, two of them gas transmission ends of three-way pipe are linked together with the last gas port of inflator respectively, another gas transmission end of three-way pipe is linked together with external gas transmission equipment.
In order to be convenient for carry out further centre gripping fixed to battery stainless steel shell, still further, pneumatic tensioning subassembly includes solid fixed ring, tensioning gasbag, connecting pipe and air supply pipe, gu fixed ring symmetry fixed connection is in the upper and lower both sides of mounting panel installing port, the inside and outside both sides of tensioning gasbag are respectively with centre gripping piece, gu fixed ring fixed connection, connect through the connecting pipe between every two adjacent tensioning gasbags, the upper end gas transmission mouth of air supply pipe is connected with the lower extreme gas transmission mouth of gas cylinder, the one end that the gas supply pipe kept away from the gas cylinder is connected with the air vent of adjacent tensioning gasbag.
In order to facilitate the collection of the waste, a collection filter box is further arranged in the water tank.
In order to lift the mounting plate upwards, the waste materials are cleaned conveniently, and further, sliding grooves are symmetrically formed in two sides of the support, and two ends of the mounting plate and two ends of the lifting plate are connected to the sliding grooves of the support in a sliding mode.
In order to facilitate taking out the collecting filter box to clean the waste materials, the inner wall of the water tank is provided with a circle of placing protrusions, and the collecting filter box is placed in the water tank through the placing protrusions.
In order to facilitate improvement of the accuracy of the burst pressure value test, further, a locking joint is fixedly connected to the air inlet of the water pipe, a thread groove is formed in the inner wall of the locking joint, and the water pipe is rotationally connected with the lifting plate.
In order to facilitate the improvement of the friction force between the clamping piece and the stainless steel shell, further, an anti-slip coating is arranged on the inner wall of the clamping piece.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects: according to the invention, through the cooperation of the water tank, the clamping piece, the pneumatic tensioning assembly, the pneumatic lifting assembly, the lifting plate, the water pipe, the sealing air bag, the pressure gauge, the water outlet head, the pressure valve and the like, when the explosion pressure value test is carried out on the battery stainless steel shell, the wafer separated from the bottom of the stainless steel shell can be collapsed into water in the water tank, so that the explosion force can be absorbed, the separated wafer is buffered, the explosion impact force is reduced, and compared with the manner of carrying out the explosion pressure test by adopting gas transmission pressurization in the prior art, the tightness of the sample stainless steel shell can be improved, the accuracy of the test pressure value is ensured, the buffer collection can be carried out on the wafer separated from the bottom of the stainless steel shell during the explosion, the explosion impact force is reduced, and the safety during the explosion pressure value test is effectively improved.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
In the drawings:
fig. 1 is a schematic structural diagram of a testing device for a stainless steel shell explosion-proof wire of a laser etched cylindrical battery;
fig. 2 is a schematic structural diagram II of a testing device for a stainless steel shell explosion-proof line of a laser etched cylindrical battery;
FIG. 3 is a schematic diagram of the structure of a pool, a collection filter box, a pneumatic lifting assembly and a pneumatic tensioning assembly in the testing device for the explosion-proof line of the stainless steel shell of the laser etching cylindrical battery;
fig. 4 is a schematic structural diagram of a portion a in fig. 1 of a testing device for a stainless steel shell explosion-proof line of a laser etched cylindrical battery according to the present invention;
fig. 5 is a schematic structural diagram of a portion B in fig. 3 of a testing device for a laser etching cylindrical battery stainless steel case explosion-proof line according to the present invention;
fig. 6 is a schematic structural diagram of a water pipe, a sealing air bag, a water outlet head, a pressure gauge and a locking joint in the testing device for the laser etching cylindrical battery stainless steel shell explosion-proof line.
In the figure: 1. a pool; 101. placing the bulge; 2. a bracket; 201. a chute; 3. a mounting plate; 4. a lifting plate; 5. collecting a filter box; 6. a fixing ring; 7. tensioning the air bag; 8. a clamping piece; 9. a connecting pipe; 10. an air cylinder; 11. a piston rod; 12. a tension spring; 13. a three-way pipe; 1010. an air supply pipe; 14. a water pipe; 15. sealing the air bag; 16. a water outlet head; 17. a pressure gauge; 18. locking the joint.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
Example 1:
referring to fig. 1 and 2, a testing device for a laser etching cylinder battery stainless steel shell explosion-proof line comprises a water tank 1, and further comprises: the bracket 2 is fixedly arranged on the pool 1; a mounting plate 3 provided on the bracket 2; a plurality of mounting openings are formed in the mounting plate 3 at equal intervals, and clamping pieces 8 are symmetrically arranged in the mounting openings; the pneumatic tensioning assembly is used for controlling the clamping piece 8 to clamp the tank body and is arranged on the mounting plate 3; the lifting plate 4 is connected to the bracket 2 in a sliding manner and is positioned above the mounting plate 3; the pneumatic lifting assembly is used for controlling the lifting plate 4 to move up and down, is arranged on the bracket 2, and is connected with the pneumatic tensioning assembly; the water pipe 14 is fixedly connected to the lifting plate 4 and is positioned right above the mounting plate 3; the sealing air bag 15 is fixedly connected to the lifting plate 4 at the lower end of the water pipe 14 and communicated with the water pipe 14, and a pressure valve is arranged in the water outlet head 16 of the sealing air bag 15; the pressure gauge 17 is fixedly arranged on the water pipe 14, and the detection end extends into the water pipe 14;
referring to fig. 2 and 5, the pneumatic lifting assembly comprises an air cylinder 10, a piston rod 11 with a piston, a tension spring 12 and a three-way pipe 13, wherein the air cylinder 10 is symmetrically and fixedly connected to two sides of the upper end of the bracket 2, the piston rod 11 is slidably connected in the air cylinder 10, the tension spring 12 is arranged in the air cylinder 10, two ends of the tension spring 12 are respectively and fixedly connected with the upper end of the air cylinder 10 and the piston rod 11, two air delivery ends of the three-way pipe 13 are respectively communicated with an upper air port of the air cylinder 10, and the other air delivery end of the three-way pipe 13 is communicated with external air delivery equipment;
referring to fig. 3 and 4, the pneumatic tensioning assembly comprises a fixing ring 6, tensioning air bags 7, a connecting pipe 9 and an air supply pipe 1010, wherein the fixing ring 6 is symmetrically and fixedly connected to the upper side and the lower side of an installation opening of the installation plate 3, the inner side and the outer side of the tensioning air bags 7 are respectively and fixedly connected with a clamping piece 8 and the fixing ring 6, every two adjacent tensioning air bags 7 are communicated through the connecting pipe 9, an upper end air supply opening of the air supply pipe 1010 is communicated with a lower end air supply opening of the air cylinder 10, and one end, away from the air cylinder 10, of the air supply pipe 1010 is communicated with an air port of the adjacent tensioning air bag 7.
After the infrared high-power laser respectively etches groove rings with different depths at the bottoms of the stainless steel shells of a plurality of sample batteries, the plurality of sample stainless steel shells can be sequentially placed between each group of two clamping pieces 8 on the testing device, then the clamping pieces 8 clamp and fix the sample stainless steel shells in a preliminary way under the tensioning force of the tensioning air bags 7, then an external air pump can be started, the external air pump is inflated into the air cylinder 10 through the three-way pipe 13, then the piston rod 11 overcomes the pulling force of the tension spring 12 under the pushing action of air pressure and moves downwards, then the piston rod 11 drives the lifting plate 4 to move downwards, at the same time, the air in the cavity below the air cylinder 10 is conveyed into the tensioning air bags 7 at the two outermost sides through the air supply pipe 1010 under the extrusion of the piston on the piston rod 11, and because the plurality of groups of tensioning air bags 7 are mutually communicated through the connecting pipe 9, therefore, the clamping sheets 8 are pressed by the plurality of groups of tensioning air bags 7 under the cooperation of the adjacent fixing rings 6, then the sample stainless steel shell is pressed again by the clamping sheets 8, so that the sample stainless steel shell can be further limited and fixed, the stability of the sample stainless steel shell is effectively improved, the stability of the sample stainless steel shell in the subsequent blasting test is improved, along with the continuous downward movement of the lifting plate 4, when the sealing air bag 15 is inserted into the sample stainless steel shell, the lifting plate 4 abuts against the sample stainless steel shell, at the moment, the water delivery port of an external water pump is communicated with one of the water delivery pipes 14, then the water pump is started, the water in the water tank 1 is delivered into the sealing air bag 15 through the water delivery pipe 14, then the sealing air bag 15 is continuously expanded under the action of the water pressure, then can closely paste with the inner wall of sample stainless steel shell to alright carry out sealed processing to sample stainless steel shell, after the water pressure in sealed gasbag 15 reaches the pressure value that installs the pressure valve in the delivery head 16, unnecessary water in sealed gasbag 15 just can inject into sample stainless steel shell this moment, along with the continuous increase of water pressure in the sample stainless steel shell, after reaching the pressure value of sample stainless steel shell bottom blasting valve, the blasting valve of sample stainless steel shell bottom just can be blasted and opened this moment, the maximum pressure that pressure gauge 17 detected just is the blasting atmospheric pressure value when this sample stainless steel shell blasting valve was opened, then test other sample stainless steel shells in proper order, can obtain the groove depth value of corresponding degree of depth in the prescribed blasting atmospheric pressure value, then carry out the finished product production that can be the batch according to the groove depth parameter of this test, through setting up 1 in the below of grip piece 8, when sample stainless steel shell blasts, the wafer that sample stainless steel shell bottom breaks away from just can be by the water of bursting pool 1 this moment, thereby can break away from the blasting force to the wafer, can be broken away from when the pressure value is carried out the blasting, the impact force is reduced in order to the sample can be compared with the sample and the impact is carried out, the test precision, can be carried out the impact is reduced in the test mode, can's the pressure is compared with the sample, can be carried out, and the impact is more is carried out, and is more can be tested, and can be carried out, and is more than well, and can be carried out.
Example 2:
referring to fig. 1 and 3, a testing device for laser etching a stainless steel shell explosion-proof wire of a cylindrical battery is basically the same as that of the embodiment 1, and further, a collecting filter box 5 is installed in a water tank 1;
the two sides of the bracket 2 are symmetrically provided with sliding grooves 201, and the two ends of the mounting plate 3 and the lifting plate 4 are both connected on the sliding grooves 201 of the bracket 2 in a sliding manner;
a circle of placing protrusions 101 are arranged on the inner wall of the water tank 1, and the collecting filter box 5 is placed in the water tank 1 through the placing protrusions 101.
Through setting up in pond 1 and collecting filter cartridge 5, when the blasting, can collect the disk and the piece that produce the blasting and filter, avoid the piece to flood in the aquatic in pond 1, so that the water pump is in the processing pond 1 when the water transport in sealed gasbag 15, make sealed gasbag 15's play water head 16 take place to block up, the steady operation of blasting test has been guaranteed effectively, when the disk that collects on the collection filter cartridge 5 needs to clear up, the staff alright lift up mounting panel 3 upwards along spout 201 at this moment, then alright take out collection filter cartridge 5 from pond 1, clear up the recovery to collecting the disk in the filter cartridge 5, the recovery efficiency of the waste material that produces when the staff is blasted has been improved effectively.
Example 3:
referring to fig. 6, a method and a testing device for laser etching a stainless steel casing explosion-proof line of a cylindrical battery are basically the same as those of embodiment 2, and further, a locking joint 18 is fixedly connected to an air inlet of a water pipe 14, a threaded groove is formed in an inner wall of the locking joint 18, the water pipe 14 is rotationally connected with a lifting plate 4, and when the stainless steel casing of the battery needs to be tested by pressure blasting, a water pipe of an external water pump is connected with the water pipe 14 through the locking joint 18, and then the water pipe of the external water pump is in sealing connection with the water pipe 14, so that the accuracy in blasting test is effectively improved.
Be equipped with anti-skidding coating on the inner wall of grip tab 8, through set up anti-skidding coating on the inner wall of grip tab 8, because the shell wall of stainless steel shell is comparatively smooth, consequently can improve the frictional force between grip tab 8 and the stainless steel shell, improved the stability to the stainless steel shell is fixed in advance effectively.
Example 4:
referring to fig. 1-6, a method for laser etching a stainless steel shell explosion-proof wire of a cylindrical battery mainly comprises the following steps: step one, confirming a sample etching position:
after the product is placed, a large-view pseudo-coaxial camera shoots a circular outline of the tank bottom, a marking position is generated, the coaxial ranging can measure the height of the stainless steel shell, and the position of the focus is adjusted up and down according to the measured height value;
step two, etching a sample tank body:
matching the preset laser parameters with the expected depth, and then controlling an infrared high-power laser to etch the circular groove of the tank body;
step three, detecting the groove depth of the sample:
after marking, the groove cutting position is moved below a sensor for measuring depth, the tank body is rotated for one circle, then a continuous change curve of the groove depth of the whole groove ring can be measured, and whether the product meets the requirement is judged;
step four, sample testing:
placing the tank bodies with different groove depths between each group of two clamping sheets 8 in sequence, controlling the sealing air bags 15 to move into the tank bodies to seal the tank bodies, then carrying out water-through pressurized blasting on the tank bodies, and when the tank bottoms of the tank bodies are blasted, the pressure measured by the pressure gauge 17 is the blasting pressure value of the tank bodies;
based on the fourth step, a worker firstly places a plurality of etched stainless steel shells between each group of two clamping pieces 8 in sequence, then drives the lifting plate 4 to move downwards through the pneumatic lifting assembly, then the pneumatic Zhang Jing assembly enables the clamping pieces 8 to clamp and fix the stainless steel shells again, then the lifting plate 4 moves the sealing air bag 15 downwards into the stainless steel shells, at the moment, water in the water tank 1 is conveyed into the sealing air bag 15 through the water pipe 14, the sealing air bag 15 is inflated, so that the stainless steel shells can be sealed, when the water pressure in the sealing air bag 15 is larger than the maximum value of the pressure valve, redundant water in the sealing air bag 15 can enter the stainless steel shells, when the water pressure in the stainless steel shells is larger than the pressure value of the explosion valve, at the moment, the explosion valve at the bottom of the stainless steel shells can be separated from the stainless steel shells, and then the maximum pressure value of the pressure meter 17 is recorded, and the explosion pressure value of the stainless steel shells can be tested;
fifthly, formally producing:
and (3) setting the proper groove depth value data measured in the step four into specified laser parameters so as to match the expected depth of the position, and then repeating the operation flow in the step two and the step three to produce the finished product.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, although the present invention has been described in the preferred embodiments, and is not limited thereto.
Claims (6)
1. The method for etching the stainless steel shell explosion-proof wire of the cylindrical battery by laser is characterized by mainly comprising the following operation steps of:
step one, confirming a sample etching position:
after the product is placed, a large-view pseudo-coaxial camera shoots a circular outline of the tank bottom, a marking position is generated, the coaxial ranging can measure the height of the stainless steel shell, and the position of the focus is adjusted up and down according to the measured height value;
step two, etching a sample tank body:
matching the preset laser parameters with the expected depth, and then controlling an infrared high-power laser to etch the circular groove of the tank body;
step three, detecting the groove depth of the sample:
after marking, the groove cutting position is moved below a sensor for measuring depth, the tank body is rotated for one circle, then a continuous change curve of the groove depth of the whole groove ring can be measured, and whether the product meets the requirement is judged;
step four, sample testing:
placing the tank bodies with different groove depths between each group of two clamping sheets (8) in sequence, controlling a sealing air bag (15) to move into the tank body to seal the tank body, and then performing water-through pressurized blasting on the tank body, wherein after the tank bottom of the tank body is blasted, the pressure measured by a pressure gauge (17) is the blasting pressure value of the tank body;
fifthly, formally producing:
setting the laser parameters corresponding to the proper groove depth value data measured in the third step into specified laser parameters so as to match the expected depth, and then repeating the operation flow in the second and third steps to produce a finished product;
the sample test adopts the testing arrangement of laser etching cylinder battery stainless steel shell explosion-proof line, and the device includes pond (1), still includes:
the bracket (2) is fixedly arranged on the pool (1);
the mounting plate (3) is arranged on the bracket (2);
a plurality of mounting openings are formed in the mounting plate (3) at equal intervals, and the clamping pieces (8) are symmetrically arranged in the mounting openings;
the pneumatic tensioning assembly is used for controlling the clamping piece (8) to clamp the tank body and is arranged on the mounting plate (3);
the lifting plate (4) is connected to the bracket (2) in a sliding manner and is positioned above the mounting plate (3);
the pneumatic lifting assembly is used for controlling the lifting plate (4) to move up and down and is arranged on the bracket (2), and the pneumatic tensioning assembly is connected with the pneumatic lifting assembly;
the water pipe (14) is fixedly connected to the lifting plate (4) and is positioned right above the mounting plate (3);
the sealing air bag (15) is fixedly connected to the lifting plate (4) and is positioned at the lower end of the water pipe (14) and communicated with the water pipe (14), and a pressure valve is arranged in a water outlet head (16) of the sealing air bag (15);
the pressure gauge (17) is fixedly arranged on the water through pipe (14), and the detection end extends into the water through pipe (14);
the pneumatic lifting assembly comprises an air cylinder (10), a piston rod (11) with a piston, a tension spring (12) and a three-way pipe (13), wherein the air cylinder (10) is symmetrically and fixedly connected to two sides of the upper end of the bracket (2), the piston rod (11) is slidably connected in the air cylinder (10), the tension spring (12) is arranged in the air cylinder (10), two ends of the tension spring (12) are respectively and fixedly connected with the upper end of the air cylinder (10) and the piston rod (11), two air conveying ends of the three-way pipe (13) are respectively communicated with an air inlet of the air cylinder (10), and the other air conveying end of the three-way pipe (13) is communicated with external air conveying equipment;
the pneumatic tensioning assembly comprises a fixing ring (6), tensioning air bags (7), connecting pipes (9) and air supply pipes (1010), wherein the fixing ring (6) is symmetrically and fixedly connected to the upper side and the lower side of an installation opening of the installation plate (3), the inner side and the outer side of each tensioning air bag (7) are respectively fixedly connected with a clamping piece (8) and the fixing ring (6), every two adjacent tensioning air bags (7) are communicated through the connecting pipes (9), an upper air transmission opening of each air supply pipe (1010) is communicated with a lower air transmission opening of each air cylinder (10), and one end, far away from each air cylinder (10), of each air supply pipe (1010) is communicated with an air vent of each tensioning air bag (7).
2. The method for laser etching the stainless steel shell explosion-proof line of the cylindrical battery according to claim 1, wherein a collecting filter box (5) is arranged in the water tank (1).
3. The method for etching the stainless steel shell explosion-proof line of the cylindrical battery by using the laser according to claim 2, wherein sliding grooves (201) are symmetrically formed in two sides of the support (2), and two ends of the mounting plate (3) and the lifting plate (4) are both connected to the sliding grooves (201) of the support (2) in a sliding mode.
4. A method for etching a stainless steel shell explosion-proof wire of a cylindrical battery by laser according to claim 3, wherein a circle of placing protrusions (101) are arranged on the inner wall of the water tank (1), and the collecting filter box (5) is placed in the water tank (1) through the placing protrusions (101).
5. The method for laser etching of the stainless steel shell explosion-proof line of the cylindrical battery according to claim 1, wherein a locking joint (18) is fixedly connected to a water inlet of the water pipe (14), a thread groove is formed in the inner wall of the locking joint (18), and the water pipe (14) is rotationally connected with the lifting plate (4).
6. The method for laser etching the stainless steel shell explosion-proof line of the cylindrical battery according to claim 1, wherein the inner wall of the clamping piece (8) is provided with an anti-slip coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310959673.9A CN116678754B (en) | 2023-07-31 | 2023-07-31 | Method and testing device for laser etching of cylindrical battery stainless steel shell explosion-proof wire |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915703A (en) * | 2010-08-04 | 2010-12-15 | 深圳市科达利实业有限公司 | Pressure resistant testing device of lithium battery shell |
| WO2015085451A1 (en) * | 2013-12-10 | 2015-06-18 | 上海六宇电子科技有限公司 | Explosion-proof sealing ring for alkaline battery |
| CN111421238A (en) * | 2020-03-10 | 2020-07-17 | 大族激光科技产业集团股份有限公司 | Laser grooving method |
| CN113547205A (en) * | 2021-07-13 | 2021-10-26 | 深圳铭创智能装备有限公司 | Laser etching device, method and system |
| CN219081565U (en) * | 2022-12-12 | 2023-05-26 | 核工业二0三研究所 | Downthehole pressurized-water test device |
-
2023
- 2023-07-31 CN CN202310959673.9A patent/CN116678754B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915703A (en) * | 2010-08-04 | 2010-12-15 | 深圳市科达利实业有限公司 | Pressure resistant testing device of lithium battery shell |
| WO2015085451A1 (en) * | 2013-12-10 | 2015-06-18 | 上海六宇电子科技有限公司 | Explosion-proof sealing ring for alkaline battery |
| CN111421238A (en) * | 2020-03-10 | 2020-07-17 | 大族激光科技产业集团股份有限公司 | Laser grooving method |
| CN113547205A (en) * | 2021-07-13 | 2021-10-26 | 深圳铭创智能装备有限公司 | Laser etching device, method and system |
| CN219081565U (en) * | 2022-12-12 | 2023-05-26 | 核工业二0三研究所 | Downthehole pressurized-water test device |
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