CN110492024A - A kind of battery cap processing method - Google Patents
A kind of battery cap processing method Download PDFInfo
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- CN110492024A CN110492024A CN201910794191.6A CN201910794191A CN110492024A CN 110492024 A CN110492024 A CN 110492024A CN 201910794191 A CN201910794191 A CN 201910794191A CN 110492024 A CN110492024 A CN 110492024A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
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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
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to accessory battery production fields, and in particular to a kind of battery cap processing method.Include the following steps；Step 1: explosion-proof valve is installed in the explosion-proof valve interface of cover board on piece, detects the difference in height of explosion-proof valve upper surface and cover board piece upper surface, and difference in height is qualified products in default range；Step 2: semi-finished product battery cap is obtained to the laser welding that qualified products obtained by step 1 carry out explosion-proof valve cover piece, double of finished battery top cover carries out the inspection of semi-finished product helium, obtain qualified semi-finished product battery cap；The present invention be provided with three detection processes, be greatly lowered substandard product by circulation use a possibility that, it is ensured that battery cap using safe；It is whether qualified come testing product by detection difference in height before explosion-proof valve welding, not only it had been avoided that substandard product was put into use, but also can reduce production cost.
Description
Technical field
The present invention relates to accessory battery production fields, and in particular to a kind of battery cap processing method.
Background technique
Currently, electronic product using more and more extensive, especially products such as mobile phone, laptop computer, new-energy automobile, all
Needing battery is its function；
And important accessory one of of the battery cap as battery, product structure include, coping plate, explosion-proof valve, explosion-proof valve are protected
Protect patch, positive electrode, cathode component, sealing ring and lower plastic cement.Wherein positive and negative anodes component is that battery can work normally must
Indispensable components, if positive and negative anodes bad connection will cause battery quality huge in battery cap process
It influences.Furthermore explosion-proof valve is as the safety guard in battery use process, if occurring unqualified production in the welding process
Product and it is undiscovered, it is likely that will cause significant damage.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of reduction battery cap processing fault rate, effectively reject not
The battery cap processing method of qualified products.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: a kind of battery cap processing method, including
Following steps；
Step 1: explosion-proof valve is installed in the explosion-proof valve interface of cover board on piece, detection explosion-proof valve upper surface and cover board piece
The difference in height of upper surface, difference in height are qualified products in default range；
Step 2: the laser welding for carrying out explosion-proof valve cover piece to qualified products obtained by step 1 obtains semi-finished product battery top
Lid, double of finished battery top cover carry out the inspection of semi-finished product helium, obtain qualified semi-finished product battery cap；
Step 3: positive electrode, cathode group is respectively welded in the cover board on piece of the resulting semi-finished product battery cap of step 2
Part and lower plastic cement obtain finished battery top cover；
Step 4: the inspection of finished product helium is carried out to finished battery top cover obtained by step 4, obtains qualified finished battery top cover.
The beneficial effects of the present invention are: three detection processes are provided with, substandard product, which is greatly lowered, and is circulated makes
With a possibility that, it is ensured that battery cap using safe；Whether closed by detection difference in height come testing product before explosion-proof valve welding
Lattice be not only avoided that substandard product was put into use, but also can reduce production cost；The helium inspection process of step 2 can be rejected anti-
Substandard product in quick-fried valve welding process；If welding of the qualified product of helium inspection by step 3 occurs secondary in step 2
Deformation causes weld cracking that can be detected and reject during the helium of step 4 is examined.
Detailed description of the invention
Fig. 1 is the elevator car canopy structural schematic diagram of the embodiment of the present invention three；
Detailed description of the invention: plastic cement, 3- positive electrode, 4- cathode component, 5- sealing ring, 6- explosion-proof valve, 7- under 1- coping plate, 2-
Explosion-proof valve protects patch.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
The most critical design of the present invention is: being provided with three detection processes, substandard product is greatly lowered and is circulated
A possibility that use, it is ensured that battery cap using safe.
The present invention provides a kind of battery cap processing method, includes the following steps；
Step 1: explosion-proof valve is installed in the explosion-proof valve interface of cover board on piece, detection explosion-proof valve upper surface and cover board piece
The difference in height of upper surface, difference in height are qualified products in default range；
Step 2: the laser welding for carrying out explosion-proof valve cover piece to qualified products obtained by step 1 obtains semi-finished product battery top
Lid, double of finished battery top cover carry out the inspection of semi-finished product helium, obtain qualified semi-finished product battery cap；
Step 3: positive electrode, cathode group is respectively welded in the cover board on piece of the resulting semi-finished product battery cap of step 2
Part and lower plastic cement obtain finished battery top cover；
Step 4: the inspection of finished product helium is carried out to finished battery top cover obtained by step 3, obtains qualified finished battery top cover.
Seen from the above description, the beneficial effects of the present invention are: be provided with three detection processes, be greatly lowered and do not conform to
Lattice product by circulation use a possibility that, it is ensured that battery cap using safe；Explosion-proof valve welding before by detection difference in height come
Whether testing product is qualified, has not only been avoided that substandard product is put into use, but also can reduce production cost；The helium of step 2 is examined
Process can reject the substandard product in explosion-proof valve welding process；If the qualified product of helium inspection is by step 3 in step 2
Welding secondary deformation occur cause weld cracking that can be detected and reject during the helium of step 4 is examined.
Further, in the step 1, using the height of dot laser detection explosion-proof valve upper surface and cover board piece upper surface
Difference.
Seen from the above description, dot laser detection accuracy is high.
Further, in the step 2, the method for semi-finished product helium inspection are as follows: semi-finished product battery cap is placed in gas and is examined and treated
In tool, upper jig cylinder-pressing semi-finished product battery cap sprays compressed air into the lower cavity of semi-finished product battery cap and protects
Pressure detects the leak rate of explosion-proof valve, and it is qualified semi-finished product battery cap that leak rate, which is less than preset value,.
Seen from the above description, the explosion-proof valve of double of finished battery top cover carries out helium inspection, whether is capable of detecting when explosion-proof valve
Welding is good, and weld seam causes explosion-proof valve can not work normally with the presence or absence of gap.
Further, the leak rate preset value is 10-7。
Further, the step 3 specifically: the resulting semi-finished product battery cap of step 2 cover board on piece just
Sealing ring is installed in pole interface and cathode interface, and positive electrode and cathode component are led to anode interface and cathode interface respectively
Laser welding is crossed, while lower plastic cement is connected to cover board piece bottom by ultrasonic heat melting welding and obtains finished battery top cover.
Seen from the above description, sealing ring can be improved the leakproofness of anode interface and cathode interface, and laser welding
Speed is fast, deformation is small, can be improved production efficiency and reduces the disqualification rate of product；Compared in conventional production methods will under
Lower plastic cement is fixedly connected by plastic cement by way of gluing with cover board piece, and not only speed of welding is fast for ultrasonic wave hot melt, and intensity is high, and
And can mechanization production, be beneficial to improve production capacity.
Further, the step 3 further include: removing cover board welding tiny plate bits remained on surface, dust and small
Grain object.
Further, in the step 4, the method for finished product helium inspection are as follows: finished battery top cover is placed in helium and examines and treat tool
In, lower jig cylinder-pressing finished battery top cover, by the cavity between finished battery top cover and upper jig vacuumize simultaneously at
Helium is sprayed in the lower cavity of product battery cap, detects its explosion-proof valve, positive electrode and cathode component and cover board piece welding portion
Leak rate and leak detection mouth pressure, leak rate and leak detection mouth pressure are respectively less than preset value as qualified finished battery top cover.
Seen from the above description, to the positive electrode of finished battery top cover, cathode component carry out helium inspection and to explosion-proof valve into
The secondary helium inspection of row, can not only detect that positive electrode, cathode component lead to battery cap gas leakage with the presence or absence of gap；It can also
It detects after positive and negative anodes components welding process, whether explosion-proof valve deforms cracking.
Further, the leak rate preset value is 10-7, the leak detection mouth pressure preset is 40Pa.
Further, further include step 5: qualified finished battery top cover obtained by step 4 being subjected to electrical property detection, is used
The leakage current of pressure-resistant Insulation Resistance Tester detection cathode component, detects the electricity between positive electrode and cover board using micro resistance meter
The micro resistance of the micro resistance and cathode component of resistance and positive electrode.
Further, further include step 6: pad pasting is protected to the patch explosion-proof valve of battery cap obtained by step 5.
Seen from the above description, it can be avoided battery cap in subsequent encapsulation, fortune after explosion-proof valve patch explosion-proof valve protection pad pasting
Explosion-proof valve is not damaged during defeated.
Embodiment one
A kind of battery cap processing method, includes the following steps；
Step 1: explosion-proof valve is installed in the explosion-proof valve interface of cover board on piece, using table on dot laser detection explosion-proof valve
The difference in height in face and cover board piece upper surface, difference in height are qualified products in default range；
Step 2: the laser welding for carrying out explosion-proof valve cover piece to qualified products obtained by step 1 obtains semi-finished product battery top
Lid, double of finished battery top cover carry out the inspection of semi-finished product helium, semi-finished product battery cap are placed in gas and is examined and treated in tool, upper jig cylinder
Semi-finished product battery cap is compressed, compressed air and pressure maintaining are sprayed into the lower cavity of semi-finished product battery cap, detects explosion-proof valve
Leak rate, leak rate is less than 10-7For qualified semi-finished product battery cap；
Step 3: pacify in the anode interface of the cover board on piece of the resulting semi-finished product battery cap of step 2 and cathode interface
Fill sealing ring, and by positive electrode and cathode component respectively with anode interface and cathode interface by laser welding, at the same will under
Plastic cement is connected to cover board piece bottom by ultrasonic heat melting welding and obtains finished battery top cover, and it is remained on surface tiny to remove cover board welding
Plate bits, dust and finely ground particles；
Step 4: carrying out the inspection of finished product helium to finished battery top cover obtained by step 3, and finished battery top cover is placed in helium inspection
In jig, lower jig cylinder-pressing finished battery top cover vacuumizes the cavity between finished battery top cover and upper jig simultaneously
Helium is sprayed into the lower cavity of finished battery top cover, detects its explosion-proof valve, positive electrode and cathode component and cover board piece weld part
The leak rate and leak detection mouth pressure divided, leak rate is less than 10-7, it is qualified finished battery top cover that leak detection mouth pressure, which is less than 40Pa,.
Step 5: qualified finished battery top cover obtained by step 4 is subjected to electrical property detection, is surveyed using pressure-resistant insulation resistance
The leakage current for trying instrument detection cathode component detects the resistance and positive electrode between positive electrode and cover board using micro resistance meter
Micro resistance and cathode component micro resistance.
Step 6: pad pasting is protected to qualified finished battery top cover patch explosion-proof valve obtained by step 5.
Embodiment two
A kind of battery cap processing method, the battery cap include coping plate, lower plastic cement, positive electrode, cathode group
Part, sealing ring, explosion-proof valve and explosion-proof valve protect patch；
Above-mentioned battery cap processing method includes the following steps:
Step 1: coping plate feeding grabs cover board fine positioning at fine positioning, product by fine positioning transfer to speed
Chain carrier sabot；Laser Jet, stamp are cleaned at coping plate stamp after the completion；Manipulator takes out coping plate, using dot laser
The difference in height of explosion-proof valve and cover board is detected, rejected product is not welded in welding post, and difference in height is qualified in default range
Product；
Step 2: the laser welding for carrying out explosion-proof valve cover piece to qualified products obtained by step 1 obtains semi-finished product battery top
Lid, double of finished battery top cover carry out the inspection of semi-finished product helium, semi-finished product battery cap are placed in gas and is examined and treated in tool, upper jig cylinder
Semi-finished product battery cap is compressed, compressed air and pressure maintaining are sprayed into the lower cavity of semi-finished product battery cap, detects explosion-proof valve
Leak rate, leak rate is less than 10-7For qualified semi-finished product battery cap；
Step 3: to obtained by step 2, qualified semi-finished product battery cap carries out positive electrode laser welding, cathode component swashs
Photocoagulation and cover board clean shaping, remove the tiny plate bits of cover board face of weld, dust, the foreign matters such as molecule, it is ensured that surface
In clean conditions；Plastic cement is transferred load at fine positioning and is positioned, lower plastic cement and cover board are welded；
Step 4: carrying out the inspection of finished product helium to finished battery top cover obtained by step 3, and finished battery top cover is placed in helium inspection
In jig, lower jig cylinder-pressing finished battery top cover vacuumizes the cavity between finished battery top cover and upper jig simultaneously
Helium is sprayed into the lower cavity of finished battery top cover, detects its explosion-proof valve, positive electrode and cathode component and cover board piece weld part
The leak rate and leak detection mouth pressure divided, leak rate is less than 10-7, it is qualified finished battery top cover that leak detection mouth pressure, which is less than 40Pa,.
Step 5: Yangtze pressure resistance Insulation Resistance Tester YD9850A is used to qualified finished battery top cover obtained by step 4
Two, for detecting cathode leakage current；Day sets micro resistance meter RM3544-01 two, for detecting the electricity between anode and cover board
Resistance；Day sets micro resistance meter RM3545-01 four, instrument, is respectively used to detection positive and negative anodes component micro resistance.
Step 6: detection battery cap flatness, measurement accuracy +/- 0.025；
Step 7: patch explosion-proof valve protection pad pasting and the battery cap blanking by completion of processing.
Embodiment three
Referring to Fig.1, a kind of battery cap processing method, the battery cap include, coping plate, lower plastic cement, positive electrode,
Cathode component, sealing ring, explosion-proof valve and explosion-proof valve protect patch；
Above-mentioned battery cap processing method includes the following steps:
1. coping plate feeding: using servo mechanism, CCTL mechanism and mould group transfer feeding, full charging tray is manually mounted in TRAY
Disk carries out feeding (6 coping plates of a feeding), and mould group grabs cover board fine positioning at fine positioning, and mould group is product by fine positioning
Locate transfer to double-speed chain carrier sabot, manually descends empty tray.
2. Laser Jet: (coder is fixed, and each laser head is by suitable for the synchronous automatic code-printing on line of double excitation stamp
The stamp 3 of sequence one time once makes a call to 6 codes).Stamp deviation ± 0.5mm, stamp are cleaned at coping plate stamp after the completion.
3. explosion rupture disk laser welding: manipulator takes out coping plate, is put on turntable.On turntable, it is respectively completed coping plate
Loading and unloading, assembling explosion rupture disk, detection assembled height is poor, welds 4 functions.The height of explosion-proof valve and cover board is detected using dot laser
Difference, each coping plate detect 4 diagonal differences in height.Rejected product is not welded in welding post, after discharging on transmission line by
Artificial treatment.
4. semi-finished product helium is examined: using servo mechanism, gear and rack teeth mechanism, accurate lead screw driving mechanism, rack-and-pinion rotation
Product is placed in that gas is examined and treated in tool and regular product, upper jig cylinder-pressing product, cavity of resorption spray compressed air and pressure maintaining by mechanism,
Cavity of resorption vacuum pressure is detected, gas inspection (leak rate is less than 10-7) is carried out to top cover explosion rupture disk.
5. positive electrode laser welding: manipulator takes out coping plate, is put on turntable.On turntable, it is respectively completed top cover
Piece loading and unloading, assembling sealing ring, assembling positive electrode, welding four processes of positive electrode.
6. cathode component laser welding: top cover is taken piece to go out by manipulator, is put on turntable.On turntable, it is respectively completed top cover
Piece loading and unloading, assembling sealing ring, assembling cathode component, welding four processes of cathode component.
7. cover board cleans shaping: using servo mechanism, accurate lead screw driving mechanism and accurate mould group；Equipment shaping station is certainly
Dynamic loading and unloading, using stroke adjustable cylinder, adjustable reshaping mold adjusts shaping effect.Ensure the later half finished level degree of shaping.
Automatic rotating brushes+the dust suction of station is cleaned, the online tiny plate for removing cover board face of weld is considered to be worth doing, dust, the foreign matters such as molecule,
Ensure that surface is in clean conditions.
8. lower plastic cement feeding: use TRAY disk feeding, mould group transfer, TRAY disk feeder supplied materials (double-station feeding, every time
6 plastic cement of supplied materials), plastic cement is transferred load to from fine positioning from TRAY and is positioned by mould group, and mould group is drawn plastic parts and filled to double-speed chain carrier
Disk.
9. lower plastic cement ultrasonic wave hot melt: servo, accurate lead screw driving mechanism and robot (Epson LS6-702C) are used,
Lower plastic cement and cover board are welded, plastic cement assembly and plastic cement is divided to weld two machines.
10. finished product helium is examined: using servo mechanism, accurate lead screw driving mechanism, three-dimensional mould group (Y mould group stroke 850mm, X mould
Group stroke 1450mm, Z mould group stroke 200mm), variable diameter manipulator vacuum inhales pallet product, and placement helium is examined and treated in tool and regular production
Product, lower jig cylinder-pressing product, epicoele vacuumize cavity of resorption spray helium, carry out helium inspection (leakage to top cover explosion-proof valve and positive and negative welding piece
Rate is less than 10-7, and leak detection mouth pressure is less than 40Pa).
11. electric performance test: dividing station using precision cam divider, servo mechanism, accurate lead screw mechanism, cylinder drive
Motivation structure, control loading and unloading, barcode scanning, cathode leakage current and anode detect, no with cover board resistance detection, positive and negative anodes component micro resistance
Qualified product blanking etc..It is mobile to complete the position of workpiece in the detection process.This equipment uses Yangtze pressure resistance Insulation Resistance Tester
YD9850A two, for detecting cathode leakage current；Day set micro resistance meter RM3544-01 two, for detect anode and cover board it
Between resistance；Day sets micro resistance meter RM3545-01 four, instrument, is respectively used to detection positive and negative anodes component micro resistance.
12. flatness detects: using on-line monitoring mode, designed using double-station, disposably detect six products, measurement
Precision +/- 0.025.
13. pasting explosion-proof valve protects pad pasting: servo mechanism, accurate lead screw driving mechanism, accurate mould group；The automatic stripping patch of equipment
Film.
14. blanking: using servo mechanism, straight line mould group, empty tray carrys out empty tray to charging tray material waiting section, mould group on TRAY disk
Finished product is drawn from double-speed chain carrier to charging tray and waits for sabot from material, full charging tray stacks, artificial lower completely charging tray.
In conclusion the beneficial effects of the invention are that: three detection processes are provided with, substandard product quilt is greatly lowered
Circulation use a possibility that, it is ensured that battery cap using safe；By detection difference in height come testing product before explosion-proof valve welding
It is whether qualified, not only it had been avoided that substandard product was put into use, but also can reduce production cost；The helium inspection process of step 2 can
Reject the substandard product in explosion-proof valve welding process；If welding hair of the qualified product of helium inspection by step 3 in step 2
Raw secondary deformation causes weld cracking that can be detected and reject during the helium of step 4 is examined.Dot laser detection accuracy
It is high.The explosion-proof valve of double of finished battery top cover carries out helium inspection, is capable of detecting when whether explosion-proof valve welds well, weld seam whether there is
Gap causes explosion-proof valve can not work normally.Sealing ring can be improved the leakproofness of anode interface and cathode interface, and laser
Speed of welding is fast, deformation is small, can be improved production efficiency and reduces the disqualification rate of product；Compared in conventional production methods
Lower plastic cement is fixedly connected by lower plastic cement by way of gluing with cover board piece, not only speed of welding is fast for ultrasonic wave hot melt, intensity
Height, and can mechanization production, be beneficial to improve production capacity.Helium is carried out to positive electrode, the cathode component of finished battery top cover
It examines and secondary helium inspection is carried out to explosion-proof valve, can not only detect that positive electrode, cathode component lead to battery with the presence or absence of gap
Top cover gas leakage；It can also detect after positive and negative anodes components welding process, whether explosion-proof valve deforms cracking.Explosion-proof valve patch
It can be avoided battery cap explosion-proof valve in subsequent encapsulation, transportational process after explosion-proof valve protection pad pasting to be not damaged.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (10)
1. a kind of battery cap processing method, which is characterized in that include the following steps；
Step 1: explosion-proof valve is installed in the explosion-proof valve interface of cover board on piece, detection explosion-proof valve upper surface and cover board on piece table
The difference in height in face, difference in height are qualified products in default range；
Step 2: the laser welding for carrying out explosion-proof valve cover piece to qualified products obtained by step 1 obtains semi-finished product battery cap,
Double of finished battery top cover carries out the inspection of semi-finished product helium, obtains qualified semi-finished product battery cap；
Step 3: the cover board on piece of the resulting semi-finished product battery cap of step 2 be respectively welded positive electrode, cathode component and
Lower plastic cement obtains finished battery top cover；
Step 4: the inspection of finished product helium is carried out to finished battery top cover obtained by step 3, obtains qualified finished battery top cover.
2. battery cap processing method according to claim 1, which is characterized in that in the step 1, examined using dot laser
Survey the difference in height of explosion-proof valve upper surface and cover board piece upper surface.
3. battery cap processing method according to claim 1, which is characterized in that in the step 2, the inspection of semi-finished product helium
Method are as follows: semi-finished product battery cap is placed in gas and is examined and treated in tool, upper jig cylinder-pressing semi-finished product battery cap, to semi-finished product
Spray compressed air and pressure maintaining in the lower cavity of battery cap detect the leak rate of explosion-proof valve, and it is qualified half that leak rate, which is less than preset value,
Finished battery top cover.
4. battery cap processing method according to claim 3, which is characterized in that the leak rate preset value is 10-7。
5. battery cap processing method according to claim 1, which is characterized in that the step 3 specifically: in step 2
Sealing ring is installed in the anode interface and cathode interface of the cover board on piece of resulting semi-finished product battery cap, and by positive electrode and
Lower plastic cement is connected to by cathode component respectively with anode interface and cathode interface by laser welding by ultrasonic heat melting welding
Cover board piece bottom obtains finished battery top cover.
6. battery cap processing method according to claim 5, which is characterized in that the step 3 further include: remove cover board
The remaining tiny plate bits of face of weld, dust and finely ground particles.
7. battery cap processing method according to claim 1, which is characterized in that the side of the finished product helium inspection in the step 4
Method are as follows: finished battery top cover is placed in helium and is examined and treated in tool, lower jig cylinder-pressing finished battery top cover, by finished battery top cover
Cavity between upper jig, which vacuumizes, sprays helium into the lower cavity of finished battery top cover simultaneously, detects its explosion-proof valve, anode
The leak rate and leak detection mouth pressure of component and cathode component and cover board piece welding portion, leak rate and leak detection mouth pressure are respectively less than
Preset value is qualified finished battery top cover.
8. battery cap processing method according to claim 7, which is characterized in that the leak rate preset value is 10-7, the inspection
Leak pressure preset is 40Pa.
9. battery cap processing method according to claim 1, which is characterized in that further include step 5: will be obtained by step 4
Qualified finished battery top cover carries out electrical property detection, using the leakage current of pressure-resistant Insulation Resistance Tester detection cathode component, makes
The micro resistance of the resistance and positive electrode between positive electrode and cover board and the micro resistance of cathode component are detected with micro resistance meter.
10. battery cap processing method according to claim 1, which is characterized in that further include step 6: to obtained by step 4
Qualified finished battery top cover patch explosion-proof valve protects pad pasting.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618596A (en) * | 2020-06-17 | 2020-09-04 | 苏州三众新能源科技有限公司 | Production process of explosion-proof lithium battery cover plate |
| CN113714651A (en) * | 2021-08-26 | 2021-11-30 | 昆山明益信智能设备有限公司 | Automatic welding equipment for battery cover plate explosion-proof valve |
| CN114211757A (en) * | 2021-12-14 | 2022-03-22 | 苏州明益信智能设备有限公司 | Automated ultrasonic welding equipment for power battery cover plates |
| CN115732819A (en) * | 2021-08-27 | 2023-03-03 | 宁德时代新能源科技股份有限公司 | Battery cell and related battery, device, manufacturing method and manufacturing device |
| CN116417650A (en) * | 2023-04-14 | 2023-07-11 | 盐城市富源引擎科技有限公司 | Forming process of battery box cover |
| CN116774060A (en) * | 2023-06-25 | 2023-09-19 | 天合光能股份有限公司 | Leakage detection method, device, equipment and battery preparation method for semi-finished batteries |
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| CN111618596A (en) * | 2020-06-17 | 2020-09-04 | 苏州三众新能源科技有限公司 | Production process of explosion-proof lithium battery cover plate |
| CN113714651A (en) * | 2021-08-26 | 2021-11-30 | 昆山明益信智能设备有限公司 | Automatic welding equipment for battery cover plate explosion-proof valve |
| CN115732819A (en) * | 2021-08-27 | 2023-03-03 | 宁德时代新能源科技股份有限公司 | Battery cell and related battery, device, manufacturing method and manufacturing device |
| CN115732819B (en) * | 2021-08-27 | 2023-12-15 | 宁德时代新能源科技股份有限公司 | Battery monomer and battery, device, preparation method and preparation device related to battery monomer |
| CN114211757A (en) * | 2021-12-14 | 2022-03-22 | 苏州明益信智能设备有限公司 | Automated ultrasonic welding equipment for power battery cover plates |
| CN114211757B (en) * | 2021-12-14 | 2024-05-28 | 明益信(江苏)智能设备有限公司 | Automatic ultrasonic welding equipment for power battery cover plate |
| CN116417650A (en) * | 2023-04-14 | 2023-07-11 | 盐城市富源引擎科技有限公司 | Forming process of battery box cover |
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