CN220289702U - Clamp suitable for welding sample resistance test and resistance test system thereof - Google Patents
Clamp suitable for welding sample resistance test and resistance test system thereof Download PDFInfo
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- CN220289702U CN220289702U CN202322045979.1U CN202322045979U CN220289702U CN 220289702 U CN220289702 U CN 220289702U CN 202322045979 U CN202322045979 U CN 202322045979U CN 220289702 U CN220289702 U CN 220289702U
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- clamping piece
- test
- resistance
- lower clamping
- upper clamping
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- 238000012360 testing method Methods 0.000 title claims abstract description 111
- 238000003466 welding Methods 0.000 title claims abstract description 61
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 16
- 239000002131 composite material Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model relates to a fixture suitable for resistance test of a welding sample and a resistance test system thereof, wherein the fixture comprises a fixing seat, 2 test clamps are arranged on the fixing seat, and the 2 test clamps are oppositely arranged at intervals; the test clamp comprises a lower clamping piece and an upper clamping piece; the middle of the lower clamping piece and the upper clamping piece are provided with connecting pieces which are hinged together through a pin shaft; an elastic element is arranged between the lower clamping piece and the upper clamping piece; the elastic element releases elastic force outwards, so that one ends of the lower clamping piece and the upper clamping piece are always gathered together when no external force acts, and a clamping part is formed; the clamping part is a metal plate and is electrically connected with the resistance tester through a lead. The resistance test system comprises a resistance tester, and a display device for displaying the measured resistance value in real time is arranged on the resistance tester; the resistance tester is connected to two sides of the clamp through measuring wires and is respectively connected with 2 test clamps. According to the utility model, 2 test clips are fixed through the fixing seat, so that the measurement precision and the measurement consistency are ensured.
Description
Technical Field
The utility model relates to a clamp special for resistance test of a welding sample, and belongs to the field of new energy materials.
Background
As shown in fig. 1, a is a composite current collector, C is an adapter, and C is typically copper foil or aluminum foil; the composite current collector A and the adapter C are reliably connected together in a welding mode, a welding line B is formed at the connecting position, and the width of the welding line B is generally 3-5mm.
After welding is completed, the quality of the part B of the welding line is required to be confirmed; the quality of the welded part is generally confirmed by ultrasonic flaw detection, but the flaw detection needs special equipment and has high operation requirement. The battery welding line is mainly used for a battery, and the output performance of the battery is mainly influenced by resistance, so that the quality of the welding line can be detected by using an overcurrent resistance mode, the test result can reflect the success or failure of welding to a great extent, if the resistance is overlarge, the internal resistance of the battery can be seriously increased, the performance of the battery is influenced, and the welding quality is not excessively closed.
The existing test method is that metal clips are used for clamping two sides of a welding wire respectively, one side is an adapter C of a traditional foil, the other side is a composite current collector A, and then display screen readings are recorded. However, the metal clips connected with the resistance tester are clips connected through wires, so that the clamping distance between the two metal clips is difficult to be kept unchanged during manual operation, the metal lengths between the 2 metal clips are different, and the resistance tester has higher precision, so that the variation of the metal length in the test range can also influence the resistance indication of the test result. Meanwhile, the existing manual test cannot stabilize the static sample and the metal clamp in the clamping process, so that the situation of large resistance difference of samples in the same batch often occurs.
Based on the above, there is a need for improved designs of clamps for resistance testing that are better adapted to the testing of the solder samples.
Disclosure of Invention
The utility model aims to provide the fixture suitable for the resistance test of the welding sample, so that the resistance measurement process of the welding sample of the battery welding line is standardized, the measurement precision is improved, the measurement consistency is ensured, and a reliable judgment basis is provided for judging the quality of welding.
In order to achieve the above object, according to a first aspect of the present utility model, a fixture suitable for resistance testing of a welding sample is provided, including a fixing seat, on which 2 test clips are arranged, the 2 test clips being arranged at intervals;
the test clamp comprises a lower clamping piece and an upper clamping piece; the lower clamping piece and the upper clamping piece are arranged up and down oppositely;
the middle of the lower clamping piece and the middle of the upper clamping piece are respectively provided with a connecting piece, the connecting pieces on the lower clamping piece are in butt joint with the connecting pieces on the upper clamping piece, and are hinged together through a pin shaft;
an elastic element is arranged between the lower clamping piece and the upper clamping piece; the elastic element releases elastic force outwards, so that one ends of the lower clamping piece and the upper clamping piece are always gathered together when no external force acts, and a clamping part is formed;
the clamping part is a metal plate and is electrically connected with the resistance tester through a lead;
the lower clamping piece is arranged on the fixed seat, and the upper clamping piece is a free end;
the clamping parts of the test clamps on the two sides are oppositely arranged, and a cavity for placing a welding sample of a battery welding wire is formed in the middle.
As a further improvement of the utility model, the elastic element is a torsion spring, and the torsion spring penetrates through the pin shaft; the torsion spring arm is propped against the opening sides of the lower clamping piece and the upper clamping piece; the opening side is opposite to the clamping part and is respectively positioned at two ends of the lower clamping piece and the upper clamping piece.
As a further improvement of the utility model, the fixing seat is an insulating seat.
As a further improvement of the utility model, 2 conductive plates are arranged on each side of the test clamp and are respectively fixed at the gathering ends of the lower clamping piece and the upper clamping piece.
Further, the clamping parts on the lower clamping piece are electrically connected with the resistance tester through wires.
As a further improvement of the utility model, one end of the upper clamping piece far away from the clamping part is provided with a straight pressing part.
As a further improvement of the utility model, the lower clamping piece of the test clamp on the 1 side is fixed on the fixed seat, and the lower clamping piece of the test clamp on the other 1 side is detachably arranged on the fixed seat through a screw for adjusting the position.
Further, the mounting structure of the movable test clamp on the fixing seat is that a guide groove is arranged on the fixing seat and is arranged along the extending direction of the clamping part;
the bottom of the lower clamping piece is provided with a guide block which is inserted into the guide groove to form a linear guide mechanism;
the screw penetrates through the lower clamping piece and the guide groove to be connected with the nut.
When the welding fixture is used, the connection between the screw and the nut is loosened, and then the lower clamping piece can be pushed to adjust the position of the lower clamping piece on the fixing seat along the guide groove, so that the distance between the movable test clamp and the fixed test clamp is adjusted to adapt to welding samples of different battery welding lines; after the distance is adjusted properly, the screw and the nut are screwed down, the movable test clamp is fixed on the fixed seat, the distance between the movable test clamp and the fixed test clamp is locked, the resistance measurement of the welding sample of the battery welding line of one batch is completed, and then the welding quality condition is judged.
Furthermore, a scale is further arranged at the position of the fixing seat close to the movable test clamp, and the scale is arranged along the direction of the guide groove.
Further, the "0" scale of the scale is located at the end of the clamping portion where the test clip is secured. Therefore, the distance between the movable test clamp and the fixed test clamp can be accurately adjusted by moving the position of the test clamp on the scale, the like products are ensured, and the distance between the movable test clamp and the fixed test clamp is kept consistent during measurement of different batches.
In a second aspect of the present utility model, there is provided a resistance test system suitable for resistance test of a welding sample, comprising a resistance tester provided with a display device for displaying a measured resistance value in real time; the resistance tester was connected to both sides of a jig suitable for resistance testing of a welding sample as described above through measurement wires, respectively connected to 2 test jigs.
When the resistance test system suitable for the resistance test of the welding sample is used, firstly, the interval between 2 test clamps is adjusted, the test clamp on the 1 side is opened, the welding sample of the battery welding line is put in, and the clamping part clamps the adapter C or the composite current collector A; and then spreading a welding sample of a welding line of the battery, opening a testing clamp at the other 1 side, and putting the other end (the composite current collector A or the adapter C) into the clamping part, wherein at the moment, the position of the welding line B is required to be ensured not to be contacted with the testing clamps at the two sides. And starting the resistance tester, namely displaying the current resistance value on the display device, and recording the resistance value. And then operating the test clamps at the two sides, loosening, taking down the welding sample of the battery welding wire, replacing the welding sample of the other battery welding wire, and continuing to measure.
According to the clamp suitable for the resistance test of the welding sample, the 2 test clamps are fixed through the fixing seat, so that the distances between the two test clamps clamped on the welding sample of the battery welding line are consistent in the measurement process, and further the measurement accuracy and the measurement consistency are ensured.
Drawings
FIG. 1 is a schematic view of a battery weld line;
FIG. 2 is a schematic diagram of the overall structure of a welding sample resistance test system for a battery weld line;
FIG. 3 is a schematic structural view of a test clip;
FIG. 4 is a schematic view of the mounting structure of the mobile test clip on the holder.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
FIG. 2 is a schematic diagram showing the whole structure of a welding sample resistance test system of a battery welding line, which comprises a resistance tester 1, wherein a display device 2 is arranged on the resistance tester to display measured resistance values in real time; the resistance tester 1 is connected to both sides of the test bench 3 through measurement wires 11, and is connected to 2 test clamps on the test bench 3. The 2 test clips on the test bench 3 are arranged at intervals opposite to each other and are used for clamping welding samples of battery welding wires.
As shown in fig. 3, the bottom of the test board 3 is a fixed seat 31 on which a test clamp 32 is mounted; test clip 32 includes a lower clip piece 321 and an upper clip piece 322; the lower clamping piece 321 and the upper clamping piece 322 are oppositely arranged, the middle parts of the lower clamping piece 321 and the upper clamping piece 322 are respectively provided with a connecting piece 323, the connecting pieces 323 on the lower clamping piece 321 are in butt joint with the connecting pieces 323 on the upper clamping piece 322, and the lower clamping piece 321 and the upper clamping piece 322 are hinged together through a pin shaft 324; an elastic element 325 is further disposed between the lower clamping piece 321 and the upper clamping piece 322, the elastic element 325 may be a torsion spring, the elastic element 325 makes one ends of the lower clamping piece 321 and the upper clamping piece 322 always close together when no external force acts, a clamping portion 326 is formed, a welding sample for clamping a battery welding line is formed, and the clamping portion 326 is a metal plate and is connected with the measurement lead 11 through the connection lead 33.
In the test board 3 of the present utility model, the lower clamping piece 321 is mounted on the fixed seat 31, and the upper clamping piece 322 is a free end; the lower clamping pieces 321 of the test clips 32 at both sides are mounted on the fixing base 31 so that the interval between the test clips 32 at both sides is fixed. The clamping portions 326 of the test clips 32 on both sides are disposed opposite each other, with a cavity formed therebetween for placing a welding sample of a battery weld line.
To improve the measurement accuracy, the fixing base 31 is an insulating base. The clamping part 326 is a conductive flat plate, such as a copper plate, and is provided with 2 clamping pieces, which are respectively fixed at the tail ends of the lower clamping piece 321 and the upper clamping piece 322; after the clamping portions 326 of the test clips 32 are brought together, the conductive plate is brought into contact with the entire surface of the welded sample of the battery weld line, thereby increasing the contact area. And the clamping parts 326 on the lower clamping piece 321 of the test clamp 32 and the clamping parts 326 on the upper clamping piece 322 are simultaneously connected with the measuring wire 11 through the connecting wires 33.
In order to facilitate pressing the upper clamping piece 322, the elastic element 325 is compressed and deformed, the clamping portion 326 is opened, a welding sample of a battery welding line is conveniently placed, and a straight pressing portion 327 is arranged at one end of the upper clamping piece 322 away from the clamping portion 326.
Further, in the test stand 3 of the present utility model, the lower clamping piece 321 of the test clamp 32 on the 1 side is fixed on the fixing base 31, and the lower clamping piece 321 of the test clamp 32 on the other 1 side is detachably mounted on the fixing base 31 by the screw 34 for adjusting the position.
As shown in fig. 4, a schematic structural diagram of the detachable adjustment position of the lower clamping piece 321 on the fixing seat 31 is shown; the fixing seat 31 is provided with a guide groove 311, and the guide groove 311 is arranged along the extending direction of the clamping part 326; the bottom of the lower clamping piece 321 is provided with a guide block 328, and the guide block 328 is inserted into the guide groove 311 to form a linear guide mechanism; the screw 34 passes through the lower jaw 321 and the guide slot 311 to be connected with the nut 341. When in use, the connection between the screw 34 and the nut 341 is loosened, and then the lower clamping piece 321 can be pushed to adjust the position of the lower clamping piece on the fixed seat 31 along the guide groove 311, so as to adjust the interval between the movable test clamp 32 and the fixed test clamp 32, and adapt to welding samples of different battery welding lines; after the distance is adjusted properly, the screw 34 and the nut 341 are screwed down again, the movable test clamp 32 is fixed on the fixed seat 31, and the distance between the movable test clamp 32 and the fixed test clamp 32 is locked, so that the resistance measurement of the welding sample of the battery welding line of one batch is completed, and the welding quality condition is further judged.
Further, a scale is further arranged at the position of the fixing seat 31 close to the movable test clamp 32, and the scale is arranged along the direction of the guide groove 311; the scale "0" is located at the end of the clamping portion 326 of the fixed test clamp 32, so that the distance between the movable test clamp 32 and the fixed test clamp 32 can be precisely adjusted by moving the test clamp 32 on the scale, ensuring that the distance between the movable test clamp 32 and the fixed test clamp 32 is consistent when similar products are measured in different batches.
The test clip 32 of the present utility model may be a metal clip, which is stronger and stronger; it is preferable that the connecting wire 33 is directly connected to the clamping portion 326 so as to reduce the measurement error.
While the preferred embodiments of the present utility model have been illustrated and described, the present utility model is not limited to the embodiments described above, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present utility model, and these are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. The fixture is suitable for resistance test of the welding sample and is characterized by comprising a fixing seat, wherein 2 test clamps are arranged on the fixing seat, and the 2 test clamps are oppositely arranged at intervals;
the test clamp comprises a lower clamping piece and an upper clamping piece; the lower clamping piece and the upper clamping piece are arranged up and down oppositely;
the middle of the lower clamping piece and the middle of the upper clamping piece are respectively provided with a connecting piece, the connecting pieces on the lower clamping piece are in butt joint with the connecting pieces on the upper clamping piece, and are hinged together through a pin shaft;
an elastic element is arranged between the lower clamping piece and the upper clamping piece; the elastic element releases elastic force outwards, so that one ends of the lower clamping piece and the upper clamping piece are always gathered together when no external force acts, and a clamping part is formed;
the clamping part is a metal plate and is electrically connected with the resistance tester through a lead;
the lower clamping piece is arranged on the fixed seat, and the upper clamping piece is a free end;
the clamping parts of the test clamps on the two sides are oppositely arranged, and a cavity for placing a welding sample of a battery welding wire is formed in the middle.
2. A fixture suitable for resistance testing of a solder sample as claimed in claim 1,
the elastic element is a torsion spring, and the torsion spring penetrates through the pin shaft; the torsion spring arm is propped against the opening sides of the lower clamping piece and the upper clamping piece; the opening side is opposite to the clamping part and is respectively positioned at two ends of the lower clamping piece and the upper clamping piece.
3. A fixture suitable for resistance testing of a solder sample as claimed in claim 1,
the fixed seat is an insulating seat.
4. A fixture suitable for resistance testing of a solder sample as claimed in claim 1,
and 2 conductive plates are arranged on each side of the test clamp and are respectively fixed at the gathering ends of the lower clamping piece and the upper clamping piece.
5. A fixture suitable for resistance testing of a solder sample according to claim 4,
the clamping parts on the lower clamping piece and the upper clamping piece are electrically connected with the resistance tester through wires.
6. A fixture suitable for resistance testing of a solder sample as claimed in claim 1,
the one end of going up the clamping piece and keeping away from clamping part is provided with straight pressure portion.
7. A fixture suitable for resistance testing of a solder sample as claimed in claim 1,
the lower clamping piece of the test clamp at the side 1 is fixed on the fixed seat, and the lower clamping piece of the test clamp at the other side 1 is detachably arranged on the fixed seat through a screw for adjusting the position.
8. A fixture suitable for resistance testing of a solder sample according to claim 7,
the mounting structure of the movable test clamp on the fixing seat is that a guide groove is arranged on the fixing seat and is arranged along the extending direction of the clamping part;
the bottom of the lower clamping piece is provided with a guide block which is inserted into the guide groove to form a linear guide mechanism;
the screw penetrates through the lower clamping piece and the guide groove to be connected with the nut.
9. A fixture suitable for resistance testing of a solder sample according to claim 8,
the fixing seat is close to the position of the movable test clamp, and is also provided with scales which are arranged along the direction of the guide groove.
10. The resistance test system suitable for the resistance test of the welding sample is characterized by comprising a resistance tester, wherein a display device for displaying the measured resistance value in real time is arranged on the resistance tester; the resistance tester is connected to both sides of a jig for resistance testing of a welded sample according to any one of claims 1 to 9 through measuring wires, and is connected to 2 test jigs, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322045979.1U CN220289702U (en) | 2023-08-01 | 2023-08-01 | Clamp suitable for welding sample resistance test and resistance test system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322045979.1U CN220289702U (en) | 2023-08-01 | 2023-08-01 | Clamp suitable for welding sample resistance test and resistance test system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220289702U true CN220289702U (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322045979.1U Active CN220289702U (en) | 2023-08-01 | 2023-08-01 | Clamp suitable for welding sample resistance test and resistance test system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220289702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118818150A (en) * | 2024-09-18 | 2024-10-22 | 业展电子(惠州市)有限公司 | A resistance value testing device for resistors |
-
2023
- 2023-08-01 CN CN202322045979.1U patent/CN220289702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118818150A (en) * | 2024-09-18 | 2024-10-22 | 业展电子(惠州市)有限公司 | A resistance value testing device for resistors |
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