CN2135151Y - Accumulator wall welding spot flaw detector - Google Patents
Accumulator wall welding spot flaw detector Download PDFInfo
- Publication number
- CN2135151Y CN2135151Y CN 92231085 CN92231085U CN2135151Y CN 2135151 Y CN2135151 Y CN 2135151Y CN 92231085 CN92231085 CN 92231085 CN 92231085 U CN92231085 U CN 92231085U CN 2135151 Y CN2135151 Y CN 2135151Y
- Authority
- CN
- China
- Prior art keywords
- welding
- display instrument
- wall welding
- solder joint
- quality
- Prior art date
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- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a welding spot flaw detector for battery cross wall welding, which belongs to a special instrument for nondestructive flaw detection of the manufacture quality of lead-acid batteries. The existing device for detecting welding spots of the cross wall welding is generally a mechanical shearing instrument, and has the disadvantages of mechanical damage and low sensibility to the weld spots. The utility model provides a cross wall welding spot flaw detector with nondestructive flaw detection, high detection sensitivity and high efficiency. The flaw detector is composed of a display instrument, a connecting cable and a detecting probe; electrical signals which are obtained by detection and represent the quality of the weld spots are displayed on the display instrument by the detecting probe through the connecting cable; thereby, the welding quality of the weld spots is judged. The utility model has advantages of convenient use, high detecting efficiency and low manufacture cost, and is suitable for various battery factories and related factories to use.
Description
Accumulator through-wall welding solder joint defectoscope belongs to the instrumentation of the nondestructive examination of lead-acid accumulator workmanship.
Through-wall welding is the special technology that the plastic channel accumulator is produced, and it is that two lead terminal posts that will accompany a plastic wall with holes are connected together with the eyelet welding of special-purpose through-wall welding machine by plastic wall.Because through-wall welding Welding Technology and Equipment complexity, the factor that influences quality of welding spot is a lot, makes the solder joint inner structure more loose, easily produces the pore that differs in size.And accumulator solder joint when work will pass through the big electric current of hundreds of ampere, so the check of quality of welding spot is most important to the quality of whole accumulator, must detect the through-wall welding quality of welding spot one by one.
The mechanical type boxshear apparatus of introduction is all adopted in the detection of domestic each storage battery factory's butt welding point at present.Promptly two opposite flanks on the left and right pole of solder joint both sides add a suitable shearing force, if cut constantly, are certified products, otherwise are waste product.This boxshear apparatus detects quality of welding spot and exists following shortcoming: one. and the pole that welds is the lead-antimony alloy material, and intensity is very low, even good through the solder joint of shearing, also can be subjected to mechanical damage in varying degrees.Two. because the various factors influence, boxshear apparatus sensitivity is low, and most of defective solder joint detects not come out, and causes the accumulator of returning goods because of the quality of welding spot defective to account for about 60% of the entire product return of goods.
The purpose of this utility model is to propose a kind ofly to overcome said apparatus and have shortcoming, has nondestructive examination, efficient height, reliability and highly sensitive through-wall welding solder joint defectoscope.
The ultimate principle that the utility model detects is: use the four-terminal measurement method, measure the small electric resistance (10 of through-wall welding solder joint by dedicated probe
-6The Ω order of magnitude), and this resistance value has definite linear relationship with the solder joint welding quality, judges the quality of solder joint with the size of resistance value.
The realization of the present utility model purpose is by carrying out as lower device: defectoscope is made of display instrument, stube cable, detection probe, one of stube cable links to each other with display instrument, the other end links to each other with detection probe, and the electric signal of the sign quality of welding spot that the detection bullet will record shows on display instrument by stube cable.
Below in conjunction with accompanying drawing the technical solution of the utility model is described in detail.Fig. 1 is the external structure of the utility model through-wall welding solder joint defectoscope.1-digital indicator wherein, 2-power switch, 3-digital display screen, the 4-knob that returns to zero, 5-cable socket, 6-stube cable, 7-detection probe.Electric current and voltage sense line are arranged in the stube cable, and each is a pair of, links to each other with the corresponding contact of detection probe shell fragment respectively.Detection probe mainly is made up of probe handle 8, a pair of current contact shell fragment 9, a pair of voltage contact shell fragment 10 and position limitation protection frame 11.A pair of current contact and a pair of voltage contact are in short-circuit condition before work under the shell fragment effect, the handle of will popping one's head in when detecting is aimed at detected solder joint and is pressed onto the end, make the center of solder joint be in two pairs of shell fragment centers, about it, left-right deviation should be less than 5 millimeters.Position limitation protection frame 11 is made by stainless steel wire, and its effect is that the protection shell fragment is injured and guarantee that four contact positions are in the scope of filling perhaps, to improve accuracy of detection when detecting.
Fig. 2 is metering circuit figure of the present utility model.The constant current source 12 of defectoscope provides 1 ampere of constant DC current by current cable 13 and a pair of probe current return contact 9 to solder joint 14, this electric current produces a small voltage drop at the solder joint two ends, its numerical value changes with the solder joint changes in resistance, and solder joint resistance changes with the variation of quality of welding spot.This voltage drop is by contact, probe voltage loop 10, and voltage cables 15 is transported to the measurement and the display circuit 16 of display instrument, and through display instrument the small voltage value that records being converted and demonstrates with the micro-ohm is the resistance value of unit, and the resolving power of display instrument is 1 micro-ohm.The end electric current of the same name of probe does not link to each other with voltage contact, but links to each other with same pole when measuring, and becomes a kind of four-terminal measurement circuit, can eliminate stube cable resistance and contact contact resistance than the big several magnitude of the resistance of solder joint own fully.Resistance R and diode D constitute the network that improves the display instrument performance, and its effect is to improve detection speed and when solder joint disconnects display instrument is carried out overload protection.
The utility model through-wall welding solder joint defectoscope, by survey the reflection welding quality the resistance value of solder joint detect welding quality, eliminated the destructiveness of prior art butt welding point fully, have the nondestructive examination characteristics.Sensitivity simultaneously improves greatly, can detect the underproof product of solder joint reliably, and the utility model is easy to use, and the probe of holding 100 grams can detect a solder joint 2 seconds, and is faster more than 3 times than boxshear apparatus.Compare for average 1～20,000 dollar with the boxshear apparatus of import, only 3000 yuans of the utility model costs, thereby cost reduces alternative import.
Claims (2)
1, accumulator through-wall welding solder joint defectoscope, its formation contains display instrument, it is characterized in that: this defectoscope is made of display instrument, stube cable, detection probe, one of stube cable links to each other with display instrument, the other end links to each other with detection probe, and the electric signal of the sign quality of welding spot that detection probe will record shows on display instrument by stube cable.
2, defectoscope according to claim 1 is characterized in that: detection probe is by the probe handle, and a pair of current contact shell fragment, a pair of voltage contact shell fragment and position limitation protection are configured to; When not working, current contact, voltage contact are in short-circuit condition respectively under the shell fragment effect, and voltage does not link to each other with current contact, and during work, the center of two pairs of shell fragments overlaps with the center of solder joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92231085 CN2135151Y (en) | 1992-08-25 | 1992-08-25 | Accumulator wall welding spot flaw detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92231085 CN2135151Y (en) | 1992-08-25 | 1992-08-25 | Accumulator wall welding spot flaw detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2135151Y true CN2135151Y (en) | 1993-06-02 |
Family
ID=33774030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92231085 Expired - Fee Related CN2135151Y (en) | 1992-08-25 | 1992-08-25 | Accumulator wall welding spot flaw detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2135151Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147386A (en) * | 2010-12-23 | 2011-08-10 | 中国原子能科学研究院 | Nondestructive testing method for metal welding seam |
| CN102156132A (en) * | 2011-02-25 | 2011-08-17 | 安徽理士电池技术有限公司 | Device for checking insufficient solder and cold solder of storage battery |
| CN102500945A (en) * | 2011-11-30 | 2012-06-20 | 中国航空工业集团公司第六三一研究所 | Method for testing welding performance of liquid-cooling radiators |
| CN105181757A (en) * | 2015-10-12 | 2015-12-23 | 上海电机学院 | Detection device and method for copper-aluminum friction-stir welding firmness |
| CN108982601A (en) * | 2018-09-05 | 2018-12-11 | 华霆（合肥）动力技术有限公司 | A kind of solder joint detection device and method |
| CN112526359A (en) * | 2020-10-23 | 2021-03-19 | 风帆有限责任公司 | Lead-acid storage battery through-wall welding spot detection method |
-
1992
- 1992-08-25 CN CN 92231085 patent/CN2135151Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147386A (en) * | 2010-12-23 | 2011-08-10 | 中国原子能科学研究院 | Nondestructive testing method for metal welding seam |
| CN102156132A (en) * | 2011-02-25 | 2011-08-17 | 安徽理士电池技术有限公司 | Device for checking insufficient solder and cold solder of storage battery |
| CN102500945A (en) * | 2011-11-30 | 2012-06-20 | 中国航空工业集团公司第六三一研究所 | Method for testing welding performance of liquid-cooling radiators |
| CN105181757A (en) * | 2015-10-12 | 2015-12-23 | 上海电机学院 | Detection device and method for copper-aluminum friction-stir welding firmness |
| CN108982601A (en) * | 2018-09-05 | 2018-12-11 | 华霆（合肥）动力技术有限公司 | A kind of solder joint detection device and method |
| CN112526359A (en) * | 2020-10-23 | 2021-03-19 | 风帆有限责任公司 | Lead-acid storage battery through-wall welding spot detection method |
| CN112526359B (en) * | 2020-10-23 | 2022-11-18 | 风帆有限责任公司 | Lead-acid storage battery through-wall welding spot detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |