CN109946383A - A method of it is popped one's head in flexible ultrasonic and detects battery electrode welding - Google Patents
A method of it is popped one's head in flexible ultrasonic and detects battery electrode welding Download PDFInfo
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- CN109946383A CN109946383A CN201910166014.3A CN201910166014A CN109946383A CN 109946383 A CN109946383 A CN 109946383A CN 201910166014 A CN201910166014 A CN 201910166014A CN 109946383 A CN109946383 A CN 109946383A
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Abstract
A method of it is popped one's head in flexible ultrasonic and detects battery electrode welding, the following steps are included: coating couplant on battery electrode piece surface, the ceramic wafers face paste that flexible ultrasonic is popped one's head in is bonded to the upper surface of couplant again, then, start flexible ultrasonic probe and Ultrasonic NDT scanning is carried out to electrode slice welding surface, and scanning result is transmitted to by ultrasound detection host by connecting cable, scanning result is exported by ultrasound detection host again, or, the track data of continuous scanning is transmitted to by ultrasound detection host by the encoder inserted on flexible ultrasonic probe simultaneously, ultrasound detection host carries out image analysis and demonstrates output scanning result.This method is easy to operate, and testing cost is low, portable scanning, non-destructive testing, defective locations registration, it may be determined that shape, size, orientation, orientation, distribution and content of defect etc., not conforming to lattice point can be with accurate marker, and repair welding, leak repairing, correction are effectively reliable.
Description
Technical field
The present invention relates to a kind of battery production detection methods, detect battery more particularly, to a kind of popped one's head in flexible ultrasonic
The method of electrode welding.
Background technique
Currently, battery in each field such as electric car, energy storage using more and more extensive, almost include life, production,
The all spectra of scientific research.Especially in the recent period, domestic and international new-energy automobile is quickly grown, and the demand of battery is increasing, to electricity
The performance requirement in pond is also higher and higher.In the occasion of battery large-scale application, it is often necessary to which more single batteries carry out series-parallel
As battery module, it is therefore desirable to be welded to the positive and negative anodes of battery, welding quality directly affects the performance of battery module, very
To the safety and service life for directly affecting battery.
And battery electrode solder joint welding difficulty is larger, can face face of weld protrusion problem, stomata problem, fried fiery problem,
Air entrapment problem etc..Surface bulge, stomata, air entrapment are the mortal wound of welding, and many applications for these reasons must not
Do not stop or tries every possible means to evade.Therefore how battery module guarantees that single battery welding quality is very during production
Important.Domestic and international battery enterprise, which is known, will be monitored the welding quality of battery, check, assess.But it is domestic at present
The detection method that mainly uses includes: outside
1) " tensile test method " applies certain pulling force, such as 300 grams after welding, and drawing does not get off to be determined as qualification,
There are biggish disadvantages for this method, belong to destructive testing, will affect welding quality sometimes or even instead.
2) external to have had a small number of solid financial strength producers to use " visual analysis method ", this is a kind of untouchable method,
Advantage be will not butt welding point damage, the disadvantage is that accuracy rate is lower, welding can only be inferred according to the pattern for the upper surface welded
Quality.
A kind of measurement method of welding battery quality disclosed in CN108181356A passes through detection battery electrode and electrode slice
Between electric current and voltage and the resistance value for calculating solder joint, and then judge welding quality, this method be difficult to use in it is complicated and changeable, have
The Welding quality test of the curved surface solder joint of radian.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of easy to operate, defect location
Precisely, non-destructive testing is particularly suitable for being popped one's head in flexible ultrasonic for cambered curved surface solder joint detection and detects battery electrode welding
Method.
The technical solution adopted by the present invention to solve the technical problems is:
A method of it is popped one's head in flexible ultrasonic and detects battery electrode welding, comprising the following steps: applied on battery electrode piece surface
Couplant is covered, then the ceramic wafers face paste that flexible ultrasonic is popped one's head in is bonded to the upper surface of couplant, then, starting flexible ultrasonic is visited
Head carries out Ultrasonic NDT scanning to electrode slice welding surface, and scanning result is transmitted to ultrasound detection master by connecting cable
Machine, then scanning result is exported by ultrasound detection host；Wherein, the scanning result include the wave amplitude of ultrasonic echo, frequency, when
Between, the data such as position.
The method also includes, by flexible ultrasonic pop one's head on the encoder that inserts the track data of continuous scanning transmitted
To ultrasound detection host, ultrasound detection host carries out image analysis and demonstrates output scanning result.Encoder continuously records immediately
The track data of scanning facilitates and is accurately positioned defective locations and carries out accurate and effective reparation.
Flexible ultrasonic probe include ceramic wafers, flexible backing material, flexible circuit board (FPC), probing shell and
Connecting cable, the ceramic wafers are cut into encapsulating flexible backing material after single array element and form, by flexible circuit board with
Connecting cable connection composition ultrasonic probe core, is packed into probing shell composition flexible ultrasonic probe, and the flexible ultrasonic probe is logical
It crosses connecting cable and the scanning data of detected workpiece is transmitted to ultrasound detection host.
The ceramic wafers are monocrystalline piezoelectric ceramic wafers, bimorph piezo electric ceramic wafers, linear array piezoelectric ceramic wafer or face
Any one of battle array piezoelectric ceramic wafer.
Cable cover(ing), the connection of cable cover(ing) effective protection conductive cable and probing shell are arranged with outside the connecting cable
End.
The couplant is Silica hydrogel or film.
Silica hydrogel can keep for a long time elasticity in -65~200 DEG C of temperature ranges, it have excellent electrical insulation properties and
Chemical stability.It is water-fast, resistance to ozone, weather-resistant, hydrophobic, moisture-proof, shockproof, corrosion-free, and there is physiological inertia, nothing
It is malicious, tasteless, be easy to be perfused, can deep vulcanization, linear shrinkage ratio is low, low viscosity, band viscosity, gel are transparent, easy to operate etc. excellent
Point.The superior electrical insulation performance and waterproof performance of Silica hydrogel, it is ensured that do not destroy battery electrode performance when coupling reliable scanning；It is soft
Soft elasticity ensures to reach Best Coupling when uneven surface scanning；Visual fields accurate judgement when the transparency can ensure that scanning.
A kind of popped one's head in flexible ultrasonic of the present invention detects the working principle of the method for battery electrode welding are as follows: is visited using ultrasound
Hair send ultrasonic wave, and receives the Ultrasonic NDT scanning of echo, then to Ultrasonic NDT scanning result (i.e. ultrasonic echo
The data such as wave amplitude, frequency, time, position) stack analysis real time imagery, can by the ultrasonic image-forming system of ultrasound detection host
To be accurately positioned defective locations, defect shape, size, orientation, orientation, distribution and content etc. are determined.The detection method is one
Kind non-destructive testing, does not generate fever, the physical phenomenons such as temperature change to battery.
The present invention it is a kind of with flexible ultrasonic pop one's head in detection battery electrode piece welding quality method the utility model has the advantages that operation letter
Single, testing cost is low, portable scanning, non-destructive testing, and flexible ultrasonic probe passes through the concave-convex table of couplant patch composite electrode on piece
Face, using the detection mode of contact, using the data such as the wave amplitude of ultrasonic wave, frequency, time, position stack analysis in real time at
Picture, and then realize independent, non-destructive testing battery electrode solder joint welding quality, simple and fast, plane curved surface easily accurately detects, and leads to
The ultrasonic image-forming system for crossing ultrasound detection host can be accurately positioned defective locations, determine the shape of defect, size, orientation, take
To, distribution and content etc., not conforming to lattice point can be with accurate marker, and repair welding, leak repairing, correction are effectively reliable, it is ensured that safety improves
The quality of detected product.
The superior electrical insulation performance and waterproof performance of couplant do not destroy battery electrode when ensuring to couple reliable scanning
Energy；Resilient flexible ensures to reach Best Coupling when uneven surface scanning；Visual fields are accurate when the transparency can ensure that scanning
Judgement.
Detailed description of the invention
Fig. 1-is that a kind of popped one's head in flexible ultrasonic detects the operation of the method for battery electrode piece welding quality in embodiment 1
Schematic diagram；
Fig. 2-is the three-dimensional appearance schematic diagram that a kind of flexible ultrasonic of the invention is popped one's head in；
Fig. 3-is the component schematic cross-section that a kind of flexible ultrasonic of the invention is popped one's head in；
Fig. 4-is a kind of flexible ultrasonic probe deformation schematic diagram flexible of the invention,
Wherein, part shown in dotted line is the deformable shape of flexible ultrasonic probe；
Fig. 5-is the structural schematic diagram of the piezoelectric ceramic wafer of ultrasonic array probe of the present invention；
Fig. 6-is a kind of operation signal of the method with flexible ultrasonic probe detection battery electrode piece welding quality in embodiment 2
Figure.
In figure: 1, flexible ultrasonic is popped one's head in；1-1, ceramic wafers；1-2, flexible circuit board (FPC)；1-3, flexible backings' material
Material；1-4, probing shell；1-5, cable cover(ing)；1-6, connecting cable
2, encoder；3, couplant；4, battery electrode piece；5, battery；6, ultrasound detection host.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment 1
Referring to Fig.1 ~ 5, a kind of method with flexible ultrasonic probe detection battery electrode piece welding quality of this implementation, Yi Zhongyong
The method of 1 detection 5 electrode welding of battery of flexible ultrasonic probe, comprising the following steps: coat couplant on 4 surface of battery electrode piece
3, then the ceramic wafers 1-1 face paste of flexible ultrasonic probe 1 is bonded to the upper surface of couplant 3, then, starting flexible ultrasonic probe
1 pair of electrode slice welding surface carries out Ultrasonic NDT scanning, and scanning result is transmitted to ultrasound detection by connecting cable 1-6
Host 6, meanwhile, the track data of continuous scanning is transmitted to by ultrasound detection by the encoder 2 inserted on flexible ultrasonic probe 1
Host 6, ultrasound detection host 6 carry out image analysis and demonstrate output scanning result.Encoder 2 continuously records the rail of instant scanning
Mark data facilitate and are accurately positioned defective locations and carry out accurate and effective reparation.
The flexible ultrasonic probe 1 includes ceramic wafers 1-1, flexible backing material 1-3, flexible circuit board 1-2(FPC),
Probing shell 1-4 and connecting cable 1-6, the ceramic wafers 1-1 are cut into encapsulating flexible backing material 1-3 after single array element
Molding connect composition ultrasonic probe core by flexible circuit board 1-2 with connecting cable 1-6, and it is soft to be packed into probing shell 1-4 composition
Property ultrasonic probe 1, the scanning data of detected workpiece are transmitted to ultrasound by connecting cable 1-6 by flexible ultrasonic probe 1
Detect host 6.
The ceramic wafers 1-1 is face battle array piezoelectric ceramic wafer 1-1.
Cable cover(ing) 1-5, cable cover(ing) 1-5 effective protection conductive cable and probe are arranged with outside the connecting cable 1-6
The connecting pin of shell 1-4.
The couplant 3 is Silica hydrogel.The superior electrical insulation performance and waterproof performance of Silica hydrogel, it is ensured that coupling is reliably swept
5 electrode performance of battery is not destroyed when looking into；Resilient flexible ensures to reach Best Coupling when uneven surface scanning；Transparent performance is true
Visual fields accurate judgement when protecting scanning.
Embodiment 2
Referring to Fig. 6, a kind of method with flexible ultrasonic probe detection battery electrode piece welding quality of this implementation, including following step
It is rapid: to coat couplant 3 on 4 surface of battery electrode piece, then the ceramic wafers 1-1 face paste of flexible ultrasonic probe 1 is bonded to couplant 3
Upper surface, then, pop one's head in 1 pair of 4 welding surface of battery electrode piece of starting flexible ultrasonic carries out Ultrasonic NDT scanning, and passes through
Scanning result is transmitted to ultrasound detection host 6 by connecting cable 1-6, then exports scanning result by ultrasound detection host 6.
The couplant 3 is film.
The structure of shown flexible ultrasonic probe 1 is led to described in embodiment 1.
Operation of the present invention is simple, real-time monitoring, quickly and effectively, provides against hidden trouble, and promotes quality, provides for safe operation reliable
It ensures.
In addition, it should be noted that, the specific embodiments described in this specification, each section title etc. can not
Together, the equivalent or simple change that all structure, feature and principles described according to the invention patent design are done, is included in the present invention
In the protection scope of patent.The invention patent person of ordinary skill in the field can do described specific implementation case
Various changes or supplement are substituted in a similar manner, and structure without departing from the invention patent or surmount this right and want
Range defined in book is sought, should belong to the scope of protection of the patent of the present invention.
Claims (6)
1. a kind of method with flexible ultrasonic probe detection battery electrode piece welding quality, which comprises the following steps:
Couplant is coated on battery electrode piece surface, then the ceramic wafers face paste that flexible ultrasonic is popped one's head in is bonded to the upper surface of couplant,
Then, starting flexible ultrasonic probe carries out Ultrasonic NDT scanning to electrode slice welding surface, and will be ultrasonic by connecting cable
The ultrasonic echo scanning result that non-destructive testing scanning generates is transmitted to ultrasound detection host, then is swept by the output of ultrasound detection host
Come to an end fruit.
2. as described in claim 1 with the method for flexible ultrasonic probe detection battery electrode piece welding quality, which is characterized in that institute
The method of stating further includes, by flexible ultrasonic pop one's head on the encoder that inserts the track data of continuous scanning is transmitted to ultrasound detection
Host, ultrasound detection host carry out image analysis and demonstrate output scanning result.
3. the method for detecting battery electrode piece welding quality with flexible ultrasonic probe as claimed in claim 1 or 2, feature exist
In the flexible ultrasonic probe includes ceramic wafers, flexible backing material, flexible circuit board, probing shell and connecting cable, institute
It states encapsulating flexible backing material after ceramic wafers are cut into single array element to form, be connect by flexible circuit board with connecting cable
Ultrasonic probe core is formed, is packed into probing shell composition flexible ultrasonic probe, the flexible ultrasonic probe will by connecting cable
The scanning data for being detected workpiece are transmitted to ultrasound detection host.
4. as claimed in claim 3 with the method for flexible ultrasonic probe detection battery electrode piece welding quality, which is characterized in that
The ceramic wafers are monocrystalline piezoelectric ceramic wafers, bimorph piezo electric ceramic wafers, linear array piezoelectric ceramic wafer or face battle array piezoelectricity pottery
Any one of porcelain chip.
5. as claimed in claim 3 with the method for flexible ultrasonic probe detection battery electrode piece welding quality, which is characterized in that institute
It states and is arranged with cable cover(ing) outside connecting cable.
6. the method for detecting battery electrode piece welding quality with flexible ultrasonic probe as claimed in claim 1 or 2, feature exist
In the couplant is Silica hydrogel or film.
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| CN201910166014.3A CN109946383A (en) | 2019-03-06 | 2019-03-06 | A method of it is popped one's head in flexible ultrasonic and detects battery electrode welding |
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| CN201910166014.3A CN109946383A (en) | 2019-03-06 | 2019-03-06 | A method of it is popped one's head in flexible ultrasonic and detects battery electrode welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030263A (en) * | 2021-03-16 | 2021-06-25 | 中国人民解放军海军航空大学青岛校区 | Ultrasonic detection device for detecting aviation rivet |
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2019
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| CN105911144A (en) * | 2016-05-17 | 2016-08-31 | 上海卫星装备研究所 | Device and method for detecting carbon fiber composite material truss bonding defects by ultrasonic phased array |
| CN108226283A (en) * | 2016-12-22 | 2018-06-29 | 湘潭宏远电子科技有限公司 | A kind of ultrasonic detection device of lack of penetration weld seam |
| CN106841394A (en) * | 2017-02-15 | 2017-06-13 | 吉林大学 | The positioning supersonic detection device and method of face bonding fitting |
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210714 Address after: 201800 3rd floor, building 16, 9 Lane 258, Yinlong Road, Waigang Town, Jiading District, Shanghai Applicant after: MANTU ELECTRONIC (SHANGHAI) Co.,Ltd. Address before: 410200 central area, 2 / F, incubation building, building C3, golden Pioneer Park, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Applicant before: CHANGSHA FENBEI ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Application publication date: 20190628 |