CN212007662U - Air tightness detection device - Google Patents
Air tightness detection device Download PDFInfo
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- CN212007662U CN212007662U CN202020747283.7U CN202020747283U CN212007662U CN 212007662 U CN212007662 U CN 212007662U CN 202020747283 U CN202020747283 U CN 202020747283U CN 212007662 U CN212007662 U CN 212007662U
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Abstract
The utility model belongs to the technical field of the battery detects technique and specifically relates to an air tightness detection device is related to. The device is used for detecting battery utmost point post welding seam, and it includes: a negative pressure system; the detection assembly is provided with a detection pipeline used for communicating the detection assembly with the negative pressure system; the adjustable detection assembly of alignment jig removes along two at least directions, there is the preset angle between two directions. The air tightness detection device in the application can effectively detect air holes or cold joints generated during welding on a battery motherboard.
Description
Technical Field
The utility model belongs to the technical field of the battery detects technique and specifically relates to an air tightness detection device is related to.
Background
The air holes or the cold joints are one of the main defects in the welding process of the battery module busbar, and the quality of welding seams and the mechanical performance of the battery module are reduced due to the air holes or the cold joints. At present, after the busbar of the battery module is welded, the pole welding line is inspected mainly by observing the appearance through naked eyes, obvious air holes or insufficient solder are easily found, but partial air holes or insufficient solder are difficult to find, so that the reliability of the product cannot be fully ensured. Although the first sample is required to be subjected to a polar column weld metallographic test (welding area, penetration and fusion width) in production, the stability of the weld quality of the sample in the production process cannot be ensured.
Therefore, a detection device for detecting the occurrence of air holes or cold joints when a product is welded to a battery motherboard is needed.
SUMMERY OF THE UTILITY MODEL
The application provides an air tightness detection device, can effectually produce gas pocket or rosin joint when welding on the battery mother board and detect.
In order to achieve the above object, the present application provides an air tightness detection device for detecting a battery post welding seam, including:
a negative pressure system;
the detection assembly is provided with a detection pipeline used for communicating the detection assembly with the negative pressure system;
the adjustable detection assembly of alignment jig removes along two at least directions, there is the preset angle between two directions.
The gas tightness detection device in this application, the detection pipeline is connected test section and negative pressure system to detect battery utmost point post welding seam, because of the adjustable determine module's of alignment jig position again, so that it can be convenient for detect the battery.
Drawings
Fig. 1 is a schematic structural diagram of an air-tightness detecting device according to an embodiment of the present application;
FIG. 2 is a partial schematic view of FIG. 1;
fig. 3 is a top view of fig. 2.
Icon: 1-a negative pressure system; 2-a detection component; 21-detecting the pipeline; 22-a first seal; 23-a second seal; 24-a main pipeline; 25-a pressure sensor; 26-a switch; 3-an adjusting frame; 31-a first backbone; 32-a second skeleton; 33-an adjustment member; 34-a regulatory region; 4-a first locking member; 5-second locking member.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, the present application provides an air tightness detecting device for detecting a weld of a battery post, including:
a negative pressure system 1;
at least one detection assembly 2, wherein the detection assembly 2 is provided with a detection pipeline 21 for communicating the detection assembly with the negative pressure system 1;
the adjustable detection assembly 2 of alignment jig 3 moves along at least two directions, there is preset angle between two directions.
In the air tightness detection device in the application, the detection pipeline 21 is connected with the detection part and the negative pressure system 1 so as to detect the welding seam of the battery pole, and the position of the detection assembly 2 can be adjusted by the adjusting frame 3 so as to be convenient for detecting the battery.
It should be noted that the preset angle is any angle between 0 ° and 180 °, preferably the preset angle is 30 ° to 120 °, and more preferably the preset angle is 90 °.
As an optional mode, the detection assembly 2 includes a sealing member for covering a weld on the pole, and the sealing member is communicated with the negative pressure system 1 through the detection pipeline 21. In a specific detection process, the sealing element can detect the welding seam of the negative pole column of the battery firstly, and then detect the welding seam of the positive pole column of the battery, so that the welding seam can be better detected by the arrangement of the sealing element.
As an optional mode, the detection assembly 2 includes a first sealing member 22 for covering the weld on the positive post, and a second sealing member 23 for covering the weld on the negative post, and both the first sealing member 22 and the second sealing member 23 are communicated with the negative pressure system 1 through the detection pipeline 21. During specific detection, the detection pipeline 21 connects the first sealing element 22 and the second sealing element 23 with the negative pressure system 1 so as to detect the welding seam of the positive pole column covered by the first sealing element 22 and the welding seam of the negative pole column covered by the second sealing element 23, and simultaneously detect the welding seams of the positive pole column and the negative pole column so as to improve the detection efficiency.
As an optional mode, the adjusting frame 3 includes two first frameworks 31 and two second frameworks 32 disposed between the two first frameworks 31, wherein the second frameworks 32 can be moved along the extending direction of the first frameworks 31, the adjusting member 33 disposed on the second frameworks 32 and used for penetrating the detecting pipeline 21 is disposed on the second frameworks 32, and the adjusting member 33 can be moved along the extending direction of the second frameworks 32. Because the detection pipeline 21 connected with the first sealing element 22 and the second sealing element 23 penetrates through the adjusting element 33 arranged on the second framework 32, the detection pipeline 21 can move along the extending direction of the first framework 31, and the adjusting element 33 can move on the second framework 32, so that the distance between the first sealing element 22 and the second sealing element 23 can be adjusted, the distance between the two detection pipelines 21 can be adjusted, and the air tightness detection device can detect batteries of more types.
It should be noted that, the two first frameworks 31 are arranged in parallel, the two second frameworks 32 are arranged in parallel and perpendicular to the first frameworks 31, the number of the adjusting members 33 in the second frameworks 32 is multiple, and the number of the adjusting members 33 in the two second frameworks 32 is the same, so that when the battery pack is detected, all the batteries in the battery pack can be detected at one time, and the detection efficiency is improved; and a plurality of detecting element 2 can be connected to a negative pressure system 1, can reduce the quantity of negative pressure system 1 in whole equipment, reduce cost.
As an alternative, adjusting regions 34 are provided at intervals along the extending direction of the first frame 31, and pulleys are provided at both ends of the second frame 32, and the pulleys can slide in the adjusting regions 34 relative to the first frame 31. Specifically, the adjusting regions 34 disposed on the two first frameworks 31 are in one-to-one correspondence, and during adjustment, the position of one second framework 32 in the corresponding adjusting region 34 can be adjusted, so that the second framework 32 moves a predetermined distance along the extending direction of the first framework 31, and then the distance between the first sealing element 22 and the second sealing element 23 in one detection assembly 2 is adjusted, and also the two second frameworks 32 can be adjusted to move on the first framework 31 at the same time.
It should be noted that, two adjusting regions 34 are preferably provided on the first frame 31, and the first locking member 4 is provided at the adjusting regions 34 of the pulley of the first frame 31 and the second frame 32, so that the first frame 31 can be fixed after being adjusted in position, so as to facilitate the subsequent detection of the battery, and similarly, the second locking member 5 fixes the position of the adjusting ring on the second frame 32, so as to ensure the distance between two adjacent detection pipes 21.
As an optional way, the detection assembly 2 further includes a main pipe 24 for collecting the detection pipes 21, and the other end of the main pipe 24 is communicated with the negative pressure system 1. The main duct 24 summarizes the two detection ducts 21 connecting the first sealing member 22 and the second sealing member 23 to reduce the usage amount of the detection ducts 21 in the whole device, and meanwhile, if the positive pole welding line and/or the negative pole welding line in the first sealing member 22 and/or the second sealing member 23 generate air holes or cold joints, the problem of the battery can be proved.
As an alternative, the detection assembly 2 further comprises a pressure sensor 25, the pressure sensor 25 being arranged in the main pipe 24. The pressure sensor 25 is used to detect the pressure state in the main conduit 24 in order to determine the condition of the battery.
Optionally, the detecting assembly 2 further comprises a switch 26, and the switch 26 is disposed on the main pipe 24. Wherein, switch 26 can be the solenoid valve, and whether every detecting component 2 carries out work can be regulated and control in the setting of switch 26, and the user of being convenient for controls whole device.
As an optional manner, a controller is further included, and the controller is electrically connected with the negative pressure system 1, the pressure sensor 25 and the switch 26. When the battery is detected specifically, one and/or two second frameworks 32 are/is adjusted according to the distance between the positive pole and the negative pole in the battery, so that the distance between the first sealing piece 22 and the second sealing piece 23 on each detection assembly 2 is the same as the distance between the positive pole and the negative pole in the battery, and meanwhile, the adjusting ring on the first framework 31 is adjusted, so that the distance between the batteries is adjusted.
The sizes of the first sealing piece 22 and the second sealing piece 23 with different specifications are selected according to the sizes of the positive pole and the negative pole of the battery, the number of the detection pipelines 21 is selected according to the number of the batteries in the battery pack, and the main pipeline 24 is controlled through the switch 26.
Setting a negative pressure value and starting a test: presetting a negative pressure value, starting the test, then exhausting air, forming the set negative pressure value in the detection pipeline 21, and detecting the leakage value of the welding line through the pressure sensor 25 after stopping exhausting air so as to judge whether the welding line has air holes or insufficient welding.
Alternatively, the first seal 22 and the second seal 23 are both suction cups.
It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides an air tightness detection device for detect battery utmost point post welding seam, its characterized in that includes:
a negative pressure system;
the detection assembly is provided with a detection pipeline used for communicating the detection assembly with the negative pressure system;
the adjustable detection assembly of alignment jig removes along two at least directions, there is the preset angle between two directions.
2. The airtightness detection apparatus according to claim 1, wherein the detection assembly includes a sealing member for covering a weld on the post, and the sealing member is communicated with the negative pressure system through the detection pipe.
3. The airtightness detection apparatus according to claim 1, wherein the detection assembly includes a first sealing member for covering the weld on the positive post, and a second sealing member for covering the weld on the negative post, and both the first sealing member and the second sealing member are in communication with the negative pressure system through the detection conduit.
4. The airtightness detection apparatus according to claim 1, wherein the adjustment frame includes two first frames and two second frames disposed between the two first frames, wherein the second frames are capable of moving along an extending direction of the first frames, and an adjustment member for penetrating the detection pipe is disposed on the second frames, and the adjustment member is capable of reciprocating along the extending direction of the second frames.
5. The airtightness detection apparatus according to claim 4, wherein the first frame has an adjustment region provided at an interval in an extending direction thereof, and the second frame has pulleys provided at both ends thereof, and the pulleys are capable of sliding in the adjustment regions with respect to the first frame.
6. The airtightness detection apparatus according to claim 4, further comprising a first locking member for fastening the second frame to the first frame.
7. The airtightness detection apparatus according to claim 4, further comprising a second locking member for fastening the adjustment member to the second frame.
8. The airtightness detection apparatus according to claim 4, wherein two of the second frameworks are arranged in parallel, and a plurality of the adjustment members are provided in each of the second frameworks.
9. The airtightness detection apparatus according to claim 8, wherein the detection module further includes a main pipe for collecting the detection pipes, and the other end of the main pipe is communicated with the negative pressure system.
10. The airtightness detection apparatus according to claim 2 or 3, wherein the sealing member is a suction cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020747283.7U CN212007662U (en) | 2020-05-08 | 2020-05-08 | Air tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020747283.7U CN212007662U (en) | 2020-05-08 | 2020-05-08 | Air tightness detection device |
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| Publication Number | Publication Date |
|---|---|
| CN212007662U true CN212007662U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020747283.7U Active CN212007662U (en) | 2020-05-08 | 2020-05-08 | Air tightness detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115990729A (en) * | 2021-10-19 | 2023-04-21 | 宁德时代新能源科技股份有限公司 | Welding component for cold joint detection, equipment and method for detecting cold joint by welding structure |
-
2020
- 2020-05-08 CN CN202020747283.7U patent/CN212007662U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115990729A (en) * | 2021-10-19 | 2023-04-21 | 宁德时代新能源科技股份有限公司 | Welding component for cold joint detection, equipment and method for detecting cold joint by welding structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee after: AVIC Innovation Technology Research Institute (Jiangsu) Co.,Ltd. Address before: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee before: Kaibo Energy Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 166 Kejiao Road, Jintan District, Changzhou City, Jiangsu Province Patentee after: Kaibo Energy Technology Co.,Ltd. Address before: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: CHINA AVIATION LITHIUM BATTERY RESEARCH INSTITUTE Co.,Ltd. |
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| CP03 | Change of name, title or address |