CN113218760B - Welding spot tension test method for power cap of edge-covering structure - Google Patents
Welding spot tension test method for power cap of edge-covering structure Download PDFInfo
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- CN113218760B CN113218760B CN202110514412.7A CN202110514412A CN113218760B CN 113218760 B CN113218760 B CN 113218760B CN 202110514412 A CN202110514412 A CN 202110514412A CN 113218760 B CN113218760 B CN 113218760B
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- 238000003466 welding Methods 0.000 title claims abstract description 89
- 238000010998 test method Methods 0.000 title description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009957 hemming Methods 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 7
- 210000000078 claw Anatomy 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a tension testing method for welding spots of a power cap of a hemming structure, which comprises the following steps: s1, taking out hardware in a cap, and shearing off a 45-degree angle at a connecting welding point of an aluminum sheet and a top cover by using a diagonal pliers; s2, turning all edges of the edge covering positions except the cut positions of the aluminum sheets out for 180 degrees; s3, pressing the position of a welding spot to be tested, turning over the edge wrapping position of the aluminum sheet by 180 degrees, and then enabling the edge wrapping position to be parallel to the top cover; s4, respectively clamping the top cover and the folded aluminum sheet by using a pulling machine, and starting the pulling machine to measure the pulling force value of the welding spot. According to the method, through turning over of the aluminum sheet and protection of the welding points, the welding points of the cap, which cannot be effectively subjected to tension test, are changed into the welding point tension values which can be directly tested through the tension machine, the welding effect of the welding points can be quantitatively controlled, the control of the production site is facilitated, and the qualification rate is improved.
Description
Technical Field
The invention relates to a welding spot tension test method of a power cap of a wrapping structure, in particular to a welding spot tension test method of a power cap of a wrapping structure for a cylindrical lithium battery, which is connected by an upper end welding process.
Background
With the rise of cylindrical lithium batteries and electric tool lithium batteries for vehicles, the cylindrical batteries are more and more prone to power type caps, an aluminum sheet edge-covering structure is used as one of the power type caps, and the cap structure with upper end laser welding or argon arc welding spots is adopted, so that the eight-ingredient market share of the power type caps is occupied.
The periphery of the existing battery cap component adopts a binding structure, and after the assembly is completed, the welding effect of welding spots needs to be quantitatively evaluated and detected. The utility model discloses a lithium ion battery laser welding effect test method and test fixture as CN201910722151.0, the positive tab include with the first positive tab section of block laser welding and with the first positive tab section be the second positive tab section that the contained angle set up, and first positive tab section is the acute angle setting with the block, include the following step: step S10, keeping the position of the first positive tab section relative to the cap unchanged, and straightening the second positive tab section along the direction of the first positive tab section so that the first positive tab section and the second positive tab section are positioned on the same straight line; step S20: the cap is placed on the test fixture, and the second positive lug section is stretched along the length direction of the first positive lug section by using the tensile force testing machine. The welding effect between the positive electrode lug and the cap can be estimated more truly.
CN201910223407.3 discloses a welding spot detection device and a welding spot detection method of a cylindrical battery cap, wherein a processor controls a clamping jaw cylinder in a gas claw to drive two clamping blocks to open and close so as to clamp the cylindrical battery cap; the control driving part drives the first connecting piece to drive the air claw to move upwards on the sliding rail so that the air claw drives the cylindrical battery cap to move upwards to a second position; and judging whether welding spots of the cylindrical battery cap are qualified or not according to downward pulling force applied to the air claw and sensed by the pulling force sensor.
CN201610547412.6 provides a battery cap welding machine, the pole piece on the cap is lifted up by the pole piece pulling device, the pole lug correcting device makes the pole lug on the battery case rotate to align the pole piece, the battery case and the cap are placed in the welding telescoping device and the cap rotating device to align and weld, and the welded battery performs welding strength test in the tensile testing device.
Cn201920377893.X discloses a welding spot detection device of a cylindrical battery cap, the tensile force testing mechanism includes a clamping assembly for clamping and moving the cylindrical battery cap, and a tension sensor for sensing that the clamping assembly is subjected to downward tensile force.
However, most of the conventional detection methods at present adopt diagonal pliers to turn out the welding spot position outwards, observe whether aluminum scraps remain on the top cover or not, or directly test the internal resistance of the cap, wherein the internal resistance is smaller than 0.4mΩ, and both the two modes are regarded as qualified, and the two modes have the limitation of turning out to observe the residual condition.
The detection method is characterized in that whether a detection device or artificial eversion observation is adopted, the defects existing in the implementation means still detect (find) welding spots, so that the invention designs a welding spot tension test method for the power cap with the edge-wrapping structure in order to improve the limitations of the existing detection mode.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a welding spot tension testing method for a power cap of a taping structure.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a welding spot tension test method for a power cap of a covered edge structure comprises the following steps:
s1, taking out hardware in a cap, and shearing an aluminum sheet welding point at an angle of about 45 degrees by using a diagonal pliers, wherein the 45-degree angle comprises a welding point position to be tested;
S2, turning all edges of the edge wrapping position of the aluminum sheet out of the welding spot position to be tested by 180 degrees;
S3, according to the position of a welding spot to be tested, turning over the edge wrapping position of the aluminum sheet for 180 degrees and then enabling the edge wrapping position to be parallel to the top cover to obtain a welding spot connecting sheet capable of being tested;
s4, respectively clamping the top cover and the folded aluminum sheet by using a pulling machine, and starting the pulling machine to measure the pulling force value of the welding spot.
Further, in the step S1, after the hardware is taken out, the aluminum sheet needs to be removed when the aluminum sheet with the aluminum sheet is present on the edge-covered aluminum sheet.
Further, in the step S1, a 45-degree angle of the welding spot is cut by using diagonal pliers, when the angle of the welding spot is smaller than 45 degrees, the edge positions of the welding spot are symmetrically cut according to 45 degrees plus or minus 5 degrees, and when the angle of the welding spot is larger than 45 degrees, the edge positions of the welding spot are cut according to 45 degrees plus or minus 5 degrees.
Further, in the step 3, the welding spot position to be tested is pressed, the measured welding spot position is pressed up and down by adopting a flat plate type hard object, and the welding spot position is prevented from being damaged in the process of turning over the edge-covering position of the aluminum sheet.
Further, the tensile machine is a tensile tester.
Further, the edge wrapping position of the aluminum sheet and the aluminum sheet are integrally formed.
The beneficial effects of the invention are as follows: according to the method, through the turnover of the aluminum sheet and the protection of the welding spot position, the cap welding spot inconvenient to effectively carry out tension test is changed into a cap welding spot which can be easily and directly tested for the welding spot tension value through the tension machine, the quantitative control of the welding spot welding effect can be carried out, the control of the production site is facilitated, and the qualification rate is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a power cap to be tested in accordance with the present invention;
FIG. 2 is a schematic plan view of a power cap to be tested according to the present invention;
fig. 3 is a schematic diagram of the aluminum sheet edge covering position turnover of the power cap to be tested;
Fig. 4 is a 180 ° turn-up schematic view of an aluminum sheet of the power cap to be tested according to the present invention.
Detailed Description
As shown in fig. 1 to 4, a method for testing the welding spot tension of a power cap of a hemming structure comprises the following steps:
S1, taking out hardware in a cap, removing small aluminum sheets at the bottom to obtain an edge covering structure shown in FIG. 1, wherein an aluminum sheet 1, a top cover 2 and an edge covering position 4 are welded by a connecting welding spot 3 between the aluminum sheet 1 and the top cover 2, the edge covering position 4 is arranged on the periphery of the aluminum sheet 1, and the aluminum sheet 1 and the edge covering position 4 are integrally formed; the edge wrapping position 4 is used for wrapping the top cover 2;
S2, cutting off a bag Bian Lvpian along the edge of a connecting welding spot 3 between the aluminum sheet 1 and the top cover 2 to be measured towards the direction of the circle center; when the central angle formed by two sides of the connecting welding spot 3 is smaller than 45 degrees, the positions of two sides of the welding spot are symmetrically sheared according to 45 degrees, wherein 0-5 degrees of adjustment is allowed; when the central angle formed by the two sides of the connecting welding spot 3 is larger than 45 degrees, shearing according to the central angle of 45 degrees plus or minus 5 degrees;
S3, as shown in FIG. 3, turning out the edge of the edge covering position 4 of the aluminum sheet 1 by 180 degrees except for the welding spot position;
S4, according to the position of a welding spot to be tested, turning over the edge wrapping position 4 by 180 degrees by taking the extension position 5 of the welding spot 3 as a center point and then parallel to the top cover 2; obtaining a measurable welding spot connecting sheet;
s5, respectively clamping the top cover 2 and the folded aluminum sheet 1 by using a pulling machine, and starting the pulling machine to measure the pulling force value of the welding spot.
In the step S1, after the hardware is taken out, the aluminum sheet 1 is provided with an aluminum sheet, and the aluminum sheet needs to be removed when the aluminum sheet exists.
In the step S4, the welding spot position to be tested is pressed, and the measured welding spot 3 position is pressed up and down by adopting a flat plate type hard object, so that the welding spot position is prevented from being damaged in the folding process of the edge covering position 4 of the aluminum sheet 1.
Wherein, the pulling force machine is the pulling force tester.
The actual solder joint tensile test experimental data are as follows:
| Welding effect | Actual measurement pulling force (N) |
| Effective fusion of welding spot positions | 56.132 |
| Solder joint position fusion is general | 28.394 |
| Poor welding spot position fusion | 9.416 |
According to the method, through the turnover of the aluminum sheet 1 and the protection of the welding spot position, the cap welding spot which cannot be effectively subjected to tension test is changed into the welding spot tension value which can be directly tested by a tension machine, the welding spot welding effect can be quantitatively controlled, the control of a production site is facilitated, and the qualification rate is improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The method for testing the welding spot tension of the power cap of the edge-covering structure is characterized by comprising the following steps of:
S1, taking out hardware in a cap, and shearing off a 45-degree angle at a connecting welding point of an aluminum sheet and a top cover by using a diagonal pliers;
S2, turning all edges of the edge covering positions except the cut positions of the aluminum sheets out for 180 degrees;
s3, according to the position of a welding spot to be tested, the edge wrapping position of the aluminum sheet is turned over for 180 degrees and then is parallel to the top cover;
s4, respectively clamping the top cover and the folded aluminum sheet by using a pulling machine, and starting the pulling machine to measure the pulling force value of the welding spot;
In the step S1, after the hardware is taken out, the aluminum sheet needs to be removed when the aluminum sheet with the edge wrapping exists on the aluminum sheet;
Cutting off the 45-degree angle of the welding spot by using a diagonal pliers in the step S1, symmetrically cutting off the edge position of the welding spot according to 45 degrees plus or minus 5 degrees when the angle of the welding spot is smaller than 45 degrees, and cutting off the position of the welding spot according to 45 degrees plus or minus 5 degrees when the angle of the welding spot is larger than 45 degrees;
In the step S3, the welding spot position to be tested is pressed, the measured welding spot position is pressed up and down by adopting a flat plate type hard object, and the welding spot position is prevented from being damaged in the folding process of the edge-covering position of the aluminum sheet.
2. The method for testing the welding spot tension of the power cap of the hemming structure according to claim 1, wherein the tension machine is a tension tester.
3. The method for testing the welding spot tension of the power cap with the hemming structure according to claim 1, wherein the hemming position of the aluminum sheet is integrally formed with the aluminum sheet.
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|---|---|---|---|
| CN202110514412.7A CN113218760B (en) | 2021-05-12 | 2021-05-12 | Welding spot tension test method for power cap of edge-covering structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514412.7A CN113218760B (en) | 2021-05-12 | 2021-05-12 | Welding spot tension test method for power cap of edge-covering structure |
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| Publication Number | Publication Date |
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| CN113218760A CN113218760A (en) | 2021-08-06 |
| CN113218760B true CN113218760B (en) | 2024-05-31 |
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Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3130550U (en) * | 2007-01-18 | 2007-03-29 | 株式会社島津製作所 | Weld spot shear test jig and weld spot shear test equipment |
| CN101086933A (en) * | 2007-07-17 | 2007-12-12 | 北京京东方真空电器有限责任公司 | Vacuum switch tube contact and vacuum switch tube |
| DE202010001892U1 (en) * | 2010-02-04 | 2010-05-06 | Adolf Würth GmbH & Co. KG | Cutting tool with a Berührabschnitt for absorbing transverse forces |
| CN101853930A (en) * | 2010-06-10 | 2010-10-06 | 芜湖根源科技有限公司 | Power-type lithium ion battery explosion-proof cap and manufacturing method thereof |
| CN102680394A (en) * | 2012-04-20 | 2012-09-19 | 交通运输部公路科学研究院 | Measurement method of sticking-welding grating stripping force |
| CN203649600U (en) * | 2013-12-26 | 2014-06-18 | 国家电网公司 | Power battery cascade utilization battery pack desoldering device |
| CN104897357A (en) * | 2015-04-08 | 2015-09-09 | 东北大学 | Metal sheet spot-welding joint impact performance test device and method |
| CN105680110A (en) * | 2016-01-27 | 2016-06-15 | 九江迅通新能源科技有限公司 | Method for disassembling cylindrical lithium ion battery |
| CN105699186A (en) * | 2016-03-04 | 2016-06-22 | 中国汽车工程研究院股份有限公司 | Method for testing and evaluating angle-variable kinetic performance of metal resistance spot welding point |
| CN205438638U (en) * | 2016-03-23 | 2016-08-10 | 合肥国轩高科动力能源有限公司 | Diagonal pliers for disassembling battery |
| CN206399733U (en) * | 2016-12-26 | 2017-08-11 | 瀚德（中国）汽车密封系统有限公司 | Glass edge-wrapping test equipment |
| CN206415880U (en) * | 2016-12-19 | 2017-08-18 | 深圳信息职业技术学院 | A kind of Full-automatic lithium battery battery pole ear bonding machine |
| CN206464701U (en) * | 2017-01-13 | 2017-09-05 | 上海德朗能动力电池有限公司 | A kind of block welding structure of lithium ion battery |
| CN107755282A (en) * | 2016-08-19 | 2018-03-06 | 深圳市忠泽科技有限责任公司 | The pull force test method and device of lithium battery cap solder joint |
| CN207250584U (en) * | 2017-08-10 | 2018-04-17 | 新乡市天冠电子有限公司 | Laser welding enveloped edge security combination block |
| CN107946494A (en) * | 2017-11-02 | 2018-04-20 | 浙江天能能源科技股份有限公司 | A kind of method for analyzing lithium battery cap cap structure |
| CN108254248A (en) * | 2017-12-28 | 2018-07-06 | 南京日托光伏科技股份有限公司 | A kind of MWT battery electrode pull force test method and welding, welding fixture |
| CN109301333A (en) * | 2018-08-22 | 2019-02-01 | 惠州市成泰自动化科技有限公司 | Full-automatic lithium battery production line for manufacturing battery |
| CN109524510A (en) * | 2018-12-28 | 2019-03-26 | 东莞市沃德精密机械有限公司 | Photovoltaic cell film covering method, equipment and the method for splicing assembling photovoltaic battery component |
| CN210953624U (en) * | 2019-11-07 | 2020-07-07 | 温州际高检测仪器有限公司 | Three-dimensional geotechnique's net solder joint stretching resistance test fixture |
| CN111879612A (en) * | 2020-07-24 | 2020-11-03 | 兰州大学 | Second-generation high-temperature superconducting tape interface strength testing device and testing method |
| CN211879499U (en) * | 2020-06-02 | 2020-11-06 | 江西迪比科股份有限公司 | Novel cylindrical battery cap structure |
| CN212410279U (en) * | 2020-04-30 | 2021-01-26 | 欣旺达电动汽车电池有限公司 | BUSBAR solder joint tensile test device |
| CN212432782U (en) * | 2020-07-12 | 2021-01-29 | 惠州市君邦科技有限公司 | Detection device for battery processing |
| CN212621488U (en) * | 2020-08-03 | 2021-02-26 | 中国第一汽车股份有限公司 | Vehicle body welding spot crimping and stripping performance testing device |
-
2021
- 2021-05-12 CN CN202110514412.7A patent/CN113218760B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3130550U (en) * | 2007-01-18 | 2007-03-29 | 株式会社島津製作所 | Weld spot shear test jig and weld spot shear test equipment |
| CN101086933A (en) * | 2007-07-17 | 2007-12-12 | 北京京东方真空电器有限责任公司 | Vacuum switch tube contact and vacuum switch tube |
| DE202010001892U1 (en) * | 2010-02-04 | 2010-05-06 | Adolf Würth GmbH & Co. KG | Cutting tool with a Berührabschnitt for absorbing transverse forces |
| CN101853930A (en) * | 2010-06-10 | 2010-10-06 | 芜湖根源科技有限公司 | Power-type lithium ion battery explosion-proof cap and manufacturing method thereof |
| CN102680394A (en) * | 2012-04-20 | 2012-09-19 | 交通运输部公路科学研究院 | Measurement method of sticking-welding grating stripping force |
| CN203649600U (en) * | 2013-12-26 | 2014-06-18 | 国家电网公司 | Power battery cascade utilization battery pack desoldering device |
| CN104897357A (en) * | 2015-04-08 | 2015-09-09 | 东北大学 | Metal sheet spot-welding joint impact performance test device and method |
| CN105680110A (en) * | 2016-01-27 | 2016-06-15 | 九江迅通新能源科技有限公司 | Method for disassembling cylindrical lithium ion battery |
| CN105699186A (en) * | 2016-03-04 | 2016-06-22 | 中国汽车工程研究院股份有限公司 | Method for testing and evaluating angle-variable kinetic performance of metal resistance spot welding point |
| CN205438638U (en) * | 2016-03-23 | 2016-08-10 | 合肥国轩高科动力能源有限公司 | Diagonal pliers for disassembling battery |
| CN107755282A (en) * | 2016-08-19 | 2018-03-06 | 深圳市忠泽科技有限责任公司 | The pull force test method and device of lithium battery cap solder joint |
| CN206415880U (en) * | 2016-12-19 | 2017-08-18 | 深圳信息职业技术学院 | A kind of Full-automatic lithium battery battery pole ear bonding machine |
| CN206399733U (en) * | 2016-12-26 | 2017-08-11 | 瀚德（中国）汽车密封系统有限公司 | Glass edge-wrapping test equipment |
| CN206464701U (en) * | 2017-01-13 | 2017-09-05 | 上海德朗能动力电池有限公司 | A kind of block welding structure of lithium ion battery |
| CN207250584U (en) * | 2017-08-10 | 2018-04-17 | 新乡市天冠电子有限公司 | Laser welding enveloped edge security combination block |
| CN107946494A (en) * | 2017-11-02 | 2018-04-20 | 浙江天能能源科技股份有限公司 | A kind of method for analyzing lithium battery cap cap structure |
| CN108254248A (en) * | 2017-12-28 | 2018-07-06 | 南京日托光伏科技股份有限公司 | A kind of MWT battery electrode pull force test method and welding, welding fixture |
| CN109301333A (en) * | 2018-08-22 | 2019-02-01 | 惠州市成泰自动化科技有限公司 | Full-automatic lithium battery production line for manufacturing battery |
| CN109524510A (en) * | 2018-12-28 | 2019-03-26 | 东莞市沃德精密机械有限公司 | Photovoltaic cell film covering method, equipment and the method for splicing assembling photovoltaic battery component |
| CN210953624U (en) * | 2019-11-07 | 2020-07-07 | 温州际高检测仪器有限公司 | Three-dimensional geotechnique's net solder joint stretching resistance test fixture |
| CN212410279U (en) * | 2020-04-30 | 2021-01-26 | 欣旺达电动汽车电池有限公司 | BUSBAR solder joint tensile test device |
| CN211879499U (en) * | 2020-06-02 | 2020-11-06 | 江西迪比科股份有限公司 | Novel cylindrical battery cap structure |
| CN212432782U (en) * | 2020-07-12 | 2021-01-29 | 惠州市君邦科技有限公司 | Detection device for battery processing |
| CN111879612A (en) * | 2020-07-24 | 2020-11-03 | 兰州大学 | Second-generation high-temperature superconducting tape interface strength testing device and testing method |
| CN212621488U (en) * | 2020-08-03 | 2021-02-26 | 中国第一汽车股份有限公司 | Vehicle body welding spot crimping and stripping performance testing device |
Non-Patent Citations (4)
| Title |
|---|
| 新型动力型锂电池防爆盖帽的设计与制造;张同华等;电源技术研究与设计;20110630;第35卷(第6期);第662-665页 * |
| 李昌凤.汽车钣喷工维修.机械工业出版社,2021,第129-132页. * |
| 电池组集流片镍合金与铝合金激光焊接工艺研究;张鹏举;轻合金加工技术;20191231;第47卷(第12期);第54-58页 * |
| 电池连接片紫铜激光焊接工艺研究;吴晓红;应用激光;20200229;第40卷(第1期);第62-66页 * |
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