CN220583945U - Photovoltaic solder strip tensile test equipment - Google Patents
Photovoltaic solder strip tensile test equipment Download PDFInfo
- Publication number
- CN220583945U CN220583945U CN202321749317.6U CN202321749317U CN220583945U CN 220583945 U CN220583945 U CN 220583945U CN 202321749317 U CN202321749317 U CN 202321749317U CN 220583945 U CN220583945 U CN 220583945U
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- China
- Prior art keywords
- solder strip
- strip
- welding strip
- welding
- battery piece
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- 229910000679 solder Inorganic materials 0.000 title claims abstract description 70
- 238000009864 tensile test Methods 0.000 title claims abstract description 34
- 238000003466 welding Methods 0.000 claims abstract description 75
- 238000003825 pressing Methods 0.000 claims description 14
- 230000005294 ferromagnetic effect Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a photovoltaic solder strip tensile test device, which comprises: a base; the mobile platform is provided with a battery piece placing groove, a battery piece with a welding strip is suitable for being placed in the battery piece placing groove, and the mobile platform is movably arranged on the base; the welding strip clamping device is switchable between a clamping state for clamping the welding strip and a releasing state for releasing the welding strip, and is arranged on the moving platform; the welding strip fixing device comprises a base, a welding strip fixing device, a distal fixing device and a control device, wherein the welding strip fixing device is arranged on the base, the distal fixing device is switchable between a fixing state for fixing the welding strip and an unlocking state for releasing the welding strip, and the distal fixing device is arranged on the base. The photovoltaic solder strip tensile test equipment provided by the embodiment of the utility model has the advantages of accurate test result, low operation difficulty and the like.
Description
Technical Field
The utility model relates to the technical field of solar cell manufacturing, in particular to a photovoltaic solder strip tensile test device.
Background
Before the copper-interconnected battery piece is processed and delivered, a quality person is required to carry out a solder strip tension test on the battery piece for monitoring whether the weldability of the electroplated tin layer reaches the standard or not, evaluating the binding force between the grid line and the bottom base material, and timely isolating unqualified batches to prevent the unqualified batches from flowing into subsequent procedures.
In the photovoltaic solder strip tensile test equipment in the related art, one end of a solder strip, which is not welded, is fixed on a solder strip compression button, a battery piece is fixed on a mobile platform, and a tensile force is applied to the solder strip through the relative movement of the platform and the compression button until the solder strip is peeled from the battery piece, and the peeled tensile force is recorded. The test equipment needs to test the pulling force of a plurality of welding strips simultaneously, the welding strips are fixed manually by operators, the actual length of the welding strips between the compression buttons and the battery pieces is difficult to control due to different tightening degrees of the welding strips in the fixing process, the welding strips are difficult to be pulled simultaneously, deviation exists in test results, and if the welding strips are pulled forcefully in the fixing process, the welding strips are pulled off easily to influence the test results.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the photovoltaic solder strip tension test equipment which has the advantages of accurate test result, low operation difficulty and the like.
To achieve the above object, according to an embodiment of the present utility model, there is provided a photovoltaic solder strip tension test apparatus including: a base; the mobile platform is provided with a battery piece placing groove, a battery piece with a welding strip is suitable for being placed in the battery piece placing groove, and the mobile platform is movably arranged on the base; the welding strip clamping device is switchable between a clamping state for clamping the welding strip and a releasing state for releasing the welding strip, and is arranged on the moving platform; the remote fixing device is switchable between a fixing state for fixing the welding strip and an unlocking state for releasing the welding strip, the remote fixing device is arranged on the base, the proximal clamping device is used for fixing the part, adjacent to the battery piece, of the welding strip, and the remote fixing device is used for fixing the part, far away from the battery piece, of the welding strip.
The photovoltaic solder strip tensile test equipment provided by the embodiment of the utility model has the advantages of accurate test result, low operation difficulty and the like.
In addition, the photovoltaic solder strip tensile test apparatus according to the above embodiment of the present utility model may further have the following additional technical features:
according to one embodiment of the utility model, the proximal clamping device is arranged at one side of the welding strip extending out of the edge of the battery piece and is suitable for being attached to the battery piece.
According to one embodiment of the utility model, the proximal clamping means comprises an upper press block and a lower press block, which together clamp the welding strip in the clamped state and which are distanced from each other in the released state for releasing the welding strip.
According to one embodiment of the utility model, one of the upper and lower press blocks is provided with an electromagnet and the other is provided with a ferromagnetic piece, the electromagnet being adapted to attract the ferromagnetic piece when energized, the electromagnet being energized in the clamped state and the electromagnet being de-energized in the released state.
According to one embodiment of the utility model, the upper press block is detachably arranged on the mobile platform.
According to one embodiment of the utility model, the distal fixing device is located at the left side of the battery piece placing groove, the proximal clamping device is located at the right side of the battery piece placing groove, and the welding strip extends leftwards to the distal fixing device after extending out of the right edge of the battery piece and passing through the proximal clamping device.
According to one embodiment of the utility model, a groove is formed in the edge of one side, far away from the battery piece, of the upper pressing block, and the welding strip is suitable for being matched in the groove.
According to one embodiment of the utility model, the lower pressing block is detachably arranged on the mobile platform, and one end of the lower pressing block is provided with a pull ring.
According to one embodiment of the utility model, the distal fixation means are plural and spaced apart on the base.
According to one embodiment of the utility model, the photovoltaic solder strip tensile test device further comprises a driving device for driving the mobile platform and a detection device for detecting the driving force of the driving device.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of a photovoltaic solder strip tensile test apparatus according to an embodiment of the present utility model.
Fig. 2 is a schematic structural view of a photovoltaic solder strip tensile test apparatus according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a photovoltaic solder strip tensile test apparatus according to an embodiment of the present utility model.
Reference numerals: photovoltaic solder strip tensile test equipment 1, mobile platform 10, get piece groove 11, near-end clamping device 20, go up briquetting 21, recess 211, lower briquetting 22, pull ring 221, distal end fixing device 30, battery piece 2, solder strip 3.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
A photovoltaic solder strip tensile test apparatus 1 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, a photovoltaic solder strip tensile test apparatus 1 according to an embodiment of the present utility model includes a base (not shown in the drawings), a moving platform 10, a proximal clamping device 20, and a distal fixing device 30.
The mobile platform 10 is provided with a battery piece placing groove, the battery piece placing groove is internally suitable for placing the battery piece 2 with the welding strip 3, and the mobile platform 10 is movably arranged on the base. The proximal clamping device 20 is switchable between a clamping state for clamping the solder ribbon 3 and a releasing state for releasing the solder ribbon 3, the proximal clamping device 20 being provided on the movable platform 10. The distal fixing means 30 is switchable between a fixing state of the fixing strap 3 and an unlocking state of the releasing strap 3, the distal fixing means 30 being provided on the base. The proximal clamping means 20 are used for fixing the portion of the welding strip 3 adjacent to the battery plate 2 and the distal fixing means 30 are used for fixing the portion of the welding strip 3 remote from the battery plate 2.
It is to be understood herein that "proximal" and "distal" are relative terms and are not intended to be limiting of a fixed absolute position.
Specifically, in the portion of the solder strip 3 protruding from the battery piece 2, the end close to the battery piece 2 may be referred to as a proximal end and the end distant from the battery piece 2 may be referred to as a distal end.
The distal fixing means 30 may be a weld band compression knob by which compression and release of the weld band 3 is achieved.
When the welding strip tensile test is carried out, the battery piece is firstly put into the battery piece placing groove of the mobile platform 10, so that the welding strip 3 on the battery piece 2 passes through the near-end clamping device 20, then the near-end clamping device 20 is switched to the clamping state, and the near-end clamping device 20 is used for clamping the part, close to the near end, of the welding strip 3, so that the part, close to the near end, of the welding strip 3 is fixed. Then, the distal end of the welding strip 3 is passed through the distal end fixing device 30, the distal end fixing device 30 is switched to the fixing state, the part of the welding strip 3 adjacent to the distal end is fixed on the distal end fixing device 30, the part of the welding strip 3 adjacent to the distal end is clamped by the proximal end clamping device 20, in the process of fixing the part of the welding strip 3 adjacent to the distal end on the distal end fixing device 30, an operator can forcefully straighten the part of the welding strip 3 between the proximal end clamping device 20 and the distal end, and the part of the welding strip 3 adjacent to the proximal end is fixed by the proximal end clamping device 20, so that the tensile force at the distal end only acts on the proximal end clamping device 20 and does not act on the joint of the welding strip 3 and the battery piece 2, and the forcefully straighten the welding strip 3 does not separate from the battery piece 2, so that the length of the part of each welding strip 3 between the proximal end clamping device 20 and the distal end fixing device 30 can be consistent after forcefully straightened on the distal end fixing device 3. Finally, the proximal clamping device 20 is switched to the release state, the movable platform 10 is driven to move relative to the base, tension is applied to the welding strip 3, and the tension is recorded when the welding strip 3 is separated from the battery piece 2.
According to the photovoltaic solder strip tension test apparatus 1 of the embodiment of the present utility model, by arranging the proximal clamping device 20, the portion of the solder strip 3 adjacent to the battery piece 2 can be fixed by the proximal clamping device 20 before the solder strip 3 is fixed on the distal fixing device 30, compared with the solder strip tension test apparatus in the related art, the solder strip 3 can be straightened by force in the process of fixing the solder strip 3 on the distal fixing device 30 without causing the solder strip 3 to separate from the battery piece 2, the length of the portion of each fixed solder strip 3 between the proximal clamping device 20 and the distal fixing device 30 is consistent, and the solder strip 3 can be pulled as simultaneously as possible, thereby avoiding the problem that the solder strip cannot be simultaneously pulled due to inconsistent fixed length of the solder strip in the related art. Thereby improving the accuracy of the test results.
Moreover, as the operator can forcefully tighten the welding strip 3 in the process of fixing the welding strip 3 on the far-end fixing device 30, the operator can avoid the situation that the welding strip 3 is pulled away from the battery piece 2 without deliberately controlling the strength, thereby reducing the operation difficulty of the operator.
Therefore, the photovoltaic solder strip tensile test device 1 provided by the embodiment of the utility model has the advantages of accurate test result, low operation difficulty and the like.
A photovoltaic solder strip tensile test apparatus 1 according to a specific embodiment of the present utility model is described below with reference to the accompanying drawings.
In some embodiments of the present utility model, as shown in FIGS. 1-3, a base, a mobile platform 10, a proximal clamp device 20, and a distal fixture 30 are included.
Advantageously, the proximal clamping means 20 are provided on the side of the welding strip 3 extending beyond the edge of the battery plate 2 and are adapted to fit the battery plate 2. Therefore, the length of the welding strip 3 between the proximal clamping device 20 and the battery piece 2 can be shortened as much as possible, the proximal clamping device 20 can directly clamp the proximal end of the welding strip 3, and the influence of the difference of the tightening degree and the length of the welding strip 3 between the proximal clamping device 20 and the battery piece 2 on the accuracy of test results is avoided.
It should be understood here that even if the proximal clamping device 20 is not attached to the battery plate 2, the accuracy of the experimental results can be improved to some extent by straightening the portion between the proximal clamping device 20 and the distal fixing device 30.
Specifically, as shown in fig. 1 to 3, the proximal holding device 20 includes an upper press block 21 and a lower press block 22 (the up-down direction is shown by an arrow in the figure), in which the upper press block 21 and the lower press block 22 hold the weld bead 3 together, and in which the upper press block 21 and the lower press block 22 are away from each other to release the weld bead 3. This makes it possible to achieve the clamping and release of the butt welding strip 3 by the clamping and distancing of the upper press block 21 and the lower press block 22.
More specifically, one of the upper press block 21 and the lower press block 22 is provided with an electromagnet and the other is provided with a ferromagnetic member, the electromagnet being adapted to attract the ferromagnetic member when energized, the electromagnet being energized in the clamped state and the electromagnet being de-energized in the released state. In this way, the energization state of the electromagnet can be used to control whether the upper press block 21 and the lower press block 22 clamp the weld zone 3, thereby realizing the control of clamping and releasing the weld zone 3.
More advantageously, the upper press 21 is detachably provided on the mobile platform 10. In this way, the upper pressing block 21 can be removed from the mobile platform 10 after the welding strip 3 is fixed on the far-end fixing device 30, so that the upper pressing block 21 is prevented from interfering with the pulling of the welding strip 3 to influence the test result, and the accuracy of the test result is further improved.
Fig. 1-3 illustrate a photovoltaic solder strip tensile test apparatus 1 according to some examples of the present utility model. As shown in fig. 1 and 2, the distal fixing device 30 is located at the left side of the placement groove of the battery plate 2 (the left-right direction is shown by the arrow in the figure and is for convenience of description only, and is not limited to the actual placement direction), the proximal clamping device 20 is located at the right side of the placement groove, and the solder strip 3 extends leftward to the distal fixing device 30 after extending from the right edge of the battery plate 2 through the proximal clamping device 20. This facilitates the application of tension to the weld 3 and the detection of tension of the weld 3 against the battery plate 2.
Advantageously, as shown in fig. 2, the side edge of the upper press block 21 remote from the battery plate 2 is provided with a groove 211, and the solder strip 3 is adapted to fit in the groove 211. In this way, the welding strip 3 can be positioned by the grooves 211 in the process of fixing the welding strip 3 on the far-end fixing device 30, so that the fixed lengths are prevented from being different due to the inclination of the welding strip 3, and the accuracy of the photovoltaic welding strip tensile test equipment 1 is further improved.
Specifically, as shown in fig. 1 to 3, the lower pressing block 22 is detachably provided on the mobile platform 10, and one end of the lower pressing block 22 is provided with a pull ring 221. This may facilitate the placement and removal of the hold down block 22.
Alternatively, as shown in fig. 2 and 3, the distal fixation device 30 is plural and spaced apart on the base. In this way, the plurality of distal fixing devices 30 can be used to fix the solder strips 3 in a one-to-one correspondence, so as to facilitate the separate detection of the tension of each solder strip 3.
More specifically, the photovoltaic solder strip tensile test apparatus 1 further includes a driving device for driving the movable platform 10 and a detecting device for detecting a driving force of the driving device. This may facilitate driving of the mobile platform 10 and detection of tension.
Specifically, as shown in fig. 1 and 2, the edge of the moving platform 10 is provided with a tab slot 11 communicating with the tab slot so as to facilitate the removal of the tab 2 from the tab slot.
The operation of the photovoltaic solder strip tensile test apparatus 1 according to the embodiment of the present utility model is described below with reference to fig. 1 to 3.
The lower press block 22 is placed inside the mobile platform 10, then the battery piece 2 is placed in the battery piece placing groove of the mobile platform 10, and the upper press block 21 is placed on the right side of the battery piece 2. Ensuring that the left edge of the upper pressing block 21 is completely and tightly attached to the right edge of the battery piece 2. At this time, the switch of the electromagnet of the upper press block 21 is turned on, the electromagnet is electrified, the upper press block 21 and the lower press block 22 are mutually adsorbed, and the welding strip 3 is clamped and fixed under the magnetic force action between the upper press block 21 and the lower press block 22. At this time, the distal end of the solder strip 3 is passed through the groove 211 of the upper press block 21 and into the distal fixing device 30. The strap 3 may be forcibly straightened during the process and then secured by the distal securing means 30. The same method is adopted to straighten each welding strip 3 by force and fix the welding strip by a distal fixing device 30.
In this process, since the proximal end of the solder strip 3 is fixed by the proximal end clamping device 20, the stretched force point acts on the groove 211 and is far away from the rightmost welding point of the battery piece 2, because the solder strip 3 is compressed and the welding point between the battery piece 2 and the solder strip 3 is not easily damaged when the solder strip 3 is tensioned and the angle between the solder strip 3 and the mobile platform 10 is 0 degrees. The operator can forcibly straighten the solder strips 3 to ensure the length of the portion where each solder strip 3 is fixed to be uniform.
After that, the switch of the electromagnet of the upper pressing block 21 is closed, so that the electromagnet is powered off, the magnetic force between the upper pressing block 21 and the lower pressing block 22 disappears, and the upper pressing block 21 is moved leftwards to be taken out and completely separated from the mobile platform 10. The driving device is started to drive the mobile platform 10 to move, and the tensile force is detected by the detecting device.
Therefore, all the welding strips 3 can be pulled under the condition of the same length, and more accurate tensile test results are obtained.
Other configurations and operations of the photovoltaic solder strip tensile test apparatus 1 according to the embodiments of the present utility model are known to those skilled in the art, and will not be described in detail herein.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A photovoltaic solder strip tensile test apparatus, comprising:
a base;
the mobile platform is provided with a battery piece placing groove, a battery piece with a welding strip is suitable for being placed in the battery piece placing groove, and the mobile platform is movably arranged on the base;
the welding strip clamping device is switchable between a clamping state for clamping the welding strip and a releasing state for releasing the welding strip, and is arranged on the moving platform;
the remote fixing device is switchable between a fixing state for fixing the welding strip and an unlocking state for releasing the welding strip, the remote fixing device is arranged on the base, the proximal clamping device is used for fixing the part, adjacent to the battery piece, of the welding strip, and the remote fixing device is used for fixing the part, far away from the battery piece, of the welding strip.
2. The photovoltaic solder strip tensile testing apparatus of claim 1 wherein the proximal clamping device is disposed on a side of the solder strip extending beyond the battery tab edge and adapted to engage the battery tab.
3. The photovoltaic solder strip tensile testing apparatus of claim 1 wherein the proximal clamping means comprises an upper press block and a lower press block, the upper press block and the lower press block collectively clamping the solder strip in the clamped state and the upper press block and the lower press block being spaced apart from each other in the released state to release the solder strip.
4. A photovoltaic solder strip tensile testing device according to claim 3, characterized in that one of the upper and lower press blocks is provided with an electromagnet and the other is provided with a ferromagnetic piece, the electromagnet being adapted to attract the ferromagnetic piece when energized, the electromagnet being energized in the clamped state and the electromagnet being de-energized in the released state.
5. The photovoltaic solder strip tensile testing apparatus of claim 3 wherein the upper press block is detachably disposed on the mobile platform.
6. The photovoltaic solder strip tensile testing apparatus of claim 1 wherein the distal end fixture is located on the left side of the battery blade placement slot, the proximal end clamping device is located on the right side of the battery blade placement slot, and the solder strip extends leftward past the proximal end clamping device after extending from the right edge of the battery blade to the distal end fixture.
7. The photovoltaic solder strip tensile test apparatus of claim 3 wherein a groove is provided on a side edge of the upper press block remote from the battery piece, the solder strip being adapted to fit within the groove.
8. The photovoltaic solder strip tensile test apparatus according to claim 3, wherein the lower pressing block is detachably provided on the moving platform, and one end of the lower pressing block is provided with a pull ring.
9. The photovoltaic solder strip tensile testing apparatus of claim 1 wherein said distal end fixtures are a plurality and are spaced apart on said base.
10. The photovoltaic solder strip tensile test apparatus of claim 1, further comprising a driving device for driving the moving platform and a detecting device for detecting a driving force of the driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321749317.6U CN220583945U (en) | 2023-07-05 | 2023-07-05 | Photovoltaic solder strip tensile test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321749317.6U CN220583945U (en) | 2023-07-05 | 2023-07-05 | Photovoltaic solder strip tensile test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220583945U true CN220583945U (en) | 2024-03-12 |
Family
ID=90107563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321749317.6U Active CN220583945U (en) | 2023-07-05 | 2023-07-05 | Photovoltaic solder strip tensile test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220583945U (en) |
-
2023
- 2023-07-05 CN CN202321749317.6U patent/CN220583945U/en active Active
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