CN220042034U - High stability zinc air battery - Google Patents
High stability zinc air battery Download PDFInfo
- Publication number
- CN220042034U CN220042034U CN202320662203.1U CN202320662203U CN220042034U CN 220042034 U CN220042034 U CN 220042034U CN 202320662203 U CN202320662203 U CN 202320662203U CN 220042034 U CN220042034 U CN 220042034U
- Authority
- CN
- China
- Prior art keywords
- zinc
- cover plate
- shell
- high stability
- sealing mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000011701 zinc Substances 0.000 title claims abstract description 33
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 239000003792 electrolyte Substances 0.000 claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000009423 ventilation Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- -1 hydroxide ions Chemical class 0.000 description 9
- 238000003487 electrochemical reaction Methods 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000003411 electrode reaction Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 229910000497 Amalgam Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QNDQILQPPKQROV-UHFFFAOYSA-N dizinc Chemical compound [Zn]=[Zn] QNDQILQPPKQROV-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011787 zinc oxide Substances 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Hybrid Cells (AREA)
Abstract
The utility model discloses a high-stability zinc-air battery, which comprises a shell and a sealing mechanism; a shell: the opening part arranged at the upper end of the shell is connected with a cover plate through a fastening screw, conductive columns are arranged in mounting holes formed in the rear end of the cover plate, an activated carbon rod is arranged at the lower end of the left conductive column, a zinc plate is arranged at the lower end of the right conductive column, electrolyte is contained in the shell, the activated carbon rod and the zinc plate are both positioned in the electrolyte, a mounting groove is formed in the front side of the upper end of the cover plate, and ventilation holes are respectively formed in the middle of the bottom wall of the mounting groove; sealing mechanism: the sealing mechanism is arranged in the cover plate and is in sliding connection with the mounting groove, the air holes can be sealed through the sealing plate, the problem that the zinc plate is invalid due to the fact that oxygen enters the inside of the shell to react with electrolyte when the high-stability zinc-air battery is not used is prevented, and the stability of the high-stability zinc-air battery is improved.
Description
Technical Field
The utility model relates to the technical field of zinc-air batteries, in particular to a high-stability zinc-air battery.
Background
The zinc-air battery is also called as a zinc-oxygen air battery, and is an environment-friendly battery which has small volume, large charge capacity, small mass, normal operation in a wide temperature range, no corrosion and safe and reliable operation;
when the zinc-air battery is used, zinc in a zinc plate and hydroxide ions in electrolyte are subjected to electrochemical reaction (negative electrode reaction) so as to release electrons, meanwhile, the electrolyte is in contact with oxygen adsorbed in an active carbon rod, the electrons are absorbed, electrochemical reaction (positive electrode reaction) is carried out, and the absorbed electrons are discharged by the active carbon rod through a conductive column, so that power is supplied to external equipment through the conductive column on the right side;
the surface of current zinc-air battery has a lot of tiny bleeder vents, in order to prevent that the condition that the air battery from getting into the inside of shell and electrolyte reaction and leading to the zinc plate to become invalid when not using from appearing, reduced the stability of zinc-air battery, often set up sealed protection film in zinc-air battery at present, but sealed protection film receives the corruption of electrolyte easily and causes the damage, in order to prevent that electrolyte from leaking out from the bleeder vent, often need carrying out periodic replacement to sealed protection film, complex operation, the cost is also relatively higher, for this reason, we propose high stability zinc-air battery.
Disclosure of Invention
The utility model aims to overcome the existing defects, provide the high-stability zinc-air battery, seal the ventilation holes through the sealing plate by matching the bidirectional screw rod with the adjusting rod, prevent the problem that the zinc plate is invalid due to the reaction of oxygen entering the inside of the shell and electrolyte when the high-stability zinc-air battery is not in use, improve the stability of the high-stability zinc-air battery, simultaneously prevent the condition that the electrolyte leaks through the ventilation holes, and have simple structure, convenient operation and relatively low cost, and effectively solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a high stability zinc air battery includes a housing and a sealing mechanism;
a shell: the opening part arranged at the upper end of the shell is connected with a cover plate through a fastening screw, conductive columns are arranged in mounting holes formed in the rear end of the cover plate, an activated carbon rod is arranged at the lower end of the left conductive column, a zinc plate is arranged at the lower end of the right conductive column, electrolyte is contained in the shell, the activated carbon rod and the zinc plate are both positioned in the electrolyte, a mounting groove is formed in the front side of the upper end of the cover plate, and ventilation holes are respectively formed in the middle of the bottom wall of the mounting groove;
sealing mechanism: the sealing mechanism is arranged in the cover plate, the sealing mechanism is in sliding connection with the mounting groove, the sealing mechanism is matched with the adjusting rod through the bidirectional screw rod, the air holes can be sealed through the sealing plate, the problem that the zinc plate is invalid due to the fact that oxygen enters the inside of the shell to react with electrolyte when the high-stability zinc-air battery is not used is prevented, the stability of the high-stability zinc-air battery is improved, meanwhile, the situation that the electrolyte leaks through the air holes can be prevented, the structure is simple, the operation is convenient, and the cost is relatively low.
Further, sealing mechanism includes connecting seat, closing plate, direction traveller, slider, regulation seat and connecting rod, the left end of connecting seat is provided with the closing plate with the inner wall sliding connection of apron, spout sliding connection that closing plate and apron left wall set up, the left end and the mounting groove sliding connection of closing plate, be provided with the direction traveller in the direction spout that the right-hand member was seted up of connecting seat, the middle part of direction traveller extrados face is sliding connection respectively has the regulation seat, the inner wall sliding connection with the direction spout all adjusts the seat, the slider is connected with the connecting rod with the inner wall sliding connection of apron respectively through the round pin axle rotation in the spread groove that the slider left end set up, the middle part between the connecting rod is connected through the round pin axle rotation, the right-hand member rotation of the connecting rod of front side is connected through the right-hand member rotation of round pin axle with the regulation seat of rear side, the left end of connecting rod of rear side is connected through the right-hand member rotation of round pin axle and front side, can prevent high stability zinc air battery when not using because of oxygen gets into the inside of the shell and electrolyte reaction and lead to the problem that the zinc plate becomes invalid.
Further, sealing mechanism still includes two-way screw rod, two-way screw rod passes through the bearing and rotates to be connected in the inside right side of apron, and the slider is respectively through screw hole and two-way screw rod threaded connection that the front end set up, can pass through the position of two-way screw rod adjustment connecting rod.
Further, the device also comprises a knob, wherein the knob is arranged at the front end of the bidirectional screw rod, and the position of the sliding block can be adjusted through the bidirectional screw rod.
Further, still include the copper cap, the copper cap all sets up in the upper end of conductive column, and the lower extreme of copper cap all passes through the upper end fixed connection of rubber circle and apron, and the existence of copper cap can prevent that conductive column from receiving the problem of damage and reduction life.
Further, still include the rubber pad, the rubber pad sets up in the middle part of mounting groove left wall, and the right-hand member of rubber pad contacts with the left end of closing plate, has improved the leakproofness of closing plate.
Further, the sealing gasket is arranged at the lower end of the cover plate, the lower end of the sealing gasket is in contact with the upper end of the shell, the sealing gasket is polytetrafluoroethylene, and the polytetrafluoroethylene has good corrosion resistance and aging resistance, is soft and easy to cut, is durable, and improves the sealing performance of the cover plate.
Compared with the prior art, the utility model has the beneficial effects that: the high-stability zinc-air battery has the following advantages:
during the use, with outside conductive equipment and copper cap contact, afterwards, through outside spanner rotatory knob, the knob drives two-way screw rod rotation, two-way screw rod passes through threaded connection and drives the slider and move, interval between two sliders is increased gradually this moment, thereby increase the interval between the connecting rod, the connecting rod is because interval increase can be through adjusting the pulling force that the seat given a right, sliding guide at the apron inner wall is down, the connecting seat drives the closing plate and moves right, open the bleeder vent, outside air passes through the inside that the bleeder vent got into the shell this moment, cooperation setting through two-way screw rod and regulation pole can seal the bleeder vent through the closing plate, prevent high stability zinc-air battery when not using because of the inside that oxygen got into the shell reacts with the electrolyte and lead to the problem that the zinc plate became invalid, stability of high stability zinc-air battery has been improved, simultaneously also can prevent the condition that electrolyte from leaking through the bleeder vent, moreover, the steam generator is simple structure, the cost is relatively low.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of the sealing mechanism of the present utility model;
fig. 3 is a schematic view of a front sectional plan structure of the present utility model.
In the figure: 1 shell, 2 cover plate, 3 conductive column, 4 active carbon rod, 5 zinc plate, 6 mounting groove, 7 bleeder vent, 8 sealing mechanism, 81 connecting seat, 82 sealing plate, 83 guide slide column, 84 bi-directional screw rod, 85 slide block, 86 adjusting seat, 87 connecting rod, 9 rubber pad, 10 copper cap, 11 sealing pad, 12 electrolyte, 13 knob.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present embodiment provides a technical solution: a high stability zinc air cell comprising a housing 1 and a sealing mechanism 8;
the shell 1: the opening part arranged at the upper end of the cover plate is connected with the cover plate 2 through a fastening screw, conductive columns 3 are arranged in mounting openings formed in the rear end of the cover plate 2, an active carbon rod 4 is arranged at the lower end of the conductive column 3 on the left side, a zinc plate 5 is arranged at the lower end of the conductive column 3 on the right side, electrolyte 12 is contained in the shell 1, the active carbon rod 4 and the zinc plate 5 are both positioned in the electrolyte 12, a mounting groove 6 is formed in the front side of the upper end of the cover plate 2, ventilation holes 7 are respectively formed in the middle of the bottom wall of the mounting groove 6, during operation, zinc in the zinc plate 5 and hydroxide ions in the electrolyte 12 are subjected to electrochemical reaction (negative electrode reaction), so that electrons are released, meanwhile, the electrolyte 12 is contacted with oxygen adsorbed in the active carbon rod 4, electrons are absorbed, and electrochemical reaction (positive electrode reaction) is carried out, the absorbed electrons are discharged by the active carbon rod 4 through the conductive column 3, and thus external equipment is powered through the conductive column 3 on the right side;
sealing mechanism 8: the sealing mechanism 8 is arranged in the cover plate 2, the sealing mechanism 8 is in sliding connection with the mounting groove 6, the sealing mechanism 8 comprises a connecting seat 81, a sealing plate 82, a guide sliding column 83, a sliding block 85, an adjusting seat 86 and a connecting rod 87, the connecting seat 81 is in sliding connection with the inner wall of the cover plate 2, the left end of the connecting seat 81 is provided with the sealing plate 82, the sealing plate 82 is in sliding connection with a sliding groove arranged on the left wall of the cover plate 2, the left end of the sealing plate 82 is in sliding connection with the mounting groove 6, the guide sliding groove arranged on the right end of the connecting seat 81 is internally provided with the guide sliding column 83, the middle part of the outer cambered surface of the guide sliding column 83 is respectively in sliding connection with the adjusting seat 86, the adjusting seat 86 is respectively in sliding connection with the inner wall of the guide sliding groove, the sliding block 85 is respectively in sliding connection with the inner wall of the cover plate 2, the connecting groove arranged on the left end of the sliding block 85 is respectively in a rotating connection with the connecting rod 87 through a pin shaft, the middle part between the connecting rods 87 is in rotating connection through a pin shaft, the left end of the front connecting rod 87 is rotationally connected with the right end of the rear adjusting seat 86 through a pin shaft, the left end of the rear connecting rod 87 is rotationally connected with the right end of the front adjusting seat 86 through a pin shaft, the sealing mechanism 8 further comprises a bidirectional screw rod 84, the bidirectional screw rod 84 is rotationally connected to the right side inside the cover plate 2 through a bearing, the sliding blocks 85 are respectively in threaded connection with the bidirectional screw rod 84 through threaded holes formed in the front end, when the air-vent valve is used, the bidirectional screw rod 84 is driven to rotate through adjusting equipment, the sliding blocks 85 are driven to move through threaded connection, at the moment, the distance between the two sliding blocks 85 is gradually increased, so that the distance between the connecting rods 87 is increased, the connecting rods 87 can give a rightward pulling force to the connecting seats 81 through the adjusting seats 86, the connecting seats 81 drive the sealing plates 82 to move rightward under the sliding guide of the inner walls of the cover plate 2, the air-vent holes 7 are opened, outside air passes through bleeder vent 7 entering shell 1's inside this moment, through the cooperation setting of bi-directional screw 84 with adjust the pole 87, can seal bleeder vent 7 through closing plate 82, prevent high stability zinc air battery when not using because of the inside that oxygen got into shell 1 reacts with electrolyte 12 and lead to the problem that zinc plate 5 became invalid, improved high stability zinc air battery's stability, also can prevent simultaneously that electrolyte 12 from leaking the condition through bleeder vent 7, simple structure, the simple operation, the cost is lower relatively.
Wherein: still include knob 13, knob 13 sets up in the front end of bi-directional screw 84, through outside spanner rotation knob 13, knob 13 drives bi-directional screw 84 rotation, bi-directional screw 84 drives slider 85 through threaded connection and removes, the interval between two sliders 85 gradually increases this moment to increase the interval between the connecting rod 87, connecting rod 87 can be through adjusting seat 86 for the pulling force of connecting seat 81 right because the interval increases, under the slip guide of apron 2 inner wall, connecting seat 81 drives closing plate 82 and moves right, opens bleeder vent 7.
Wherein: still include copper cap 10, copper cap 10 all set up in the upper end of conductive post 3, and the lower extreme of copper cap 10 all is through the upper end fixed connection of rubber circle with apron 2, and the existence of copper cap 10 can prevent that conductive post 3 from receiving the problem of damage and reduction life.
Wherein: still include rubber pad 9, rubber pad 9 sets up in the middle part of mounting groove 6 left wall, and the right-hand member of rubber pad 9 contacts with the left end of closing plate 82, has improved the leakproofness of closing plate 82.
Wherein: still include sealed pad 11, sealed pad 11 sets up in the lower extreme of apron 2, and sealed pad 11's lower extreme and the upper end contact of shell 1, sealed pad 11 are polytetrafluoroethylene, and polytetrafluoroethylene itself has good corrosion resistance and ageing resistance, and soft easy cutting is durable, has improved apron 2 leakproofness.
The working principle of the high-stability zinc-air battery provided by the utility model is as follows: before use, the high-stability zinc-air battery is moved to a designated working place, external conductive equipment is contacted with the copper cap 10, then the knob 13 is rotated by an external wrench, the knob 13 drives the bidirectional screw rod 84 to rotate, the bidirectional screw rod 84 drives the sliding blocks 85 to move by threaded connection, the distance between the two sliding blocks 85 is gradually increased, so that the distance between the connecting rods 87 is increased, the connecting rods 87 can pull the connecting seat 81 rightwards by the adjusting seat 86 because the distance is increased, the connecting seat 81 drives the sealing plate 82 to move rightwards under the sliding guide of the inner wall of the cover plate 2, the ventilation holes 7 are opened, external air enters the inside of the shell 1 through the ventilation holes 7, the active carbon rod 4 collects oxygen in the air, and the main material of the zinc plate 5 is amalgam zinc, the amalgamated zinc cathode can prevent cathode corrosion, so that the recyclability of zinc oxide is obviously improved, the electrolyte 12 is potassium hydroxide, and is a high-concentration alkaline solution, when the zinc-zinc cathode is in operation, zinc in the zinc plate 5 and hydroxide ions in the electrolyte 12 are subjected to electrochemical reaction (cathode reaction) to release electrons, meanwhile, the electrolyte 12 is in contact with oxygen adsorbed in the active carbon rod 4 to absorb electrons, electrochemical reaction (anode reaction) is carried out, the absorbed electrons are discharged by the active carbon rod 4 through the conductive column 3, so that power is supplied to external equipment through the copper cap 10 on the right side, the sealing gasket 11 is polytetrafluoroethylene, and the polytetrafluoroethylene has good corrosion resistance and aging resistance, is soft and easy to cut, is durable, and improves the sealing performance of the cover plate 2.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (7)
1. High stability zinc-air battery, its characterized in that: comprises a shell (1) and a sealing mechanism (8);
outer casing (1): the opening part arranged at the upper end of the shell is connected with a cover plate (2) through a fastening screw, conductive columns (3) are arranged in mounting openings formed in the rear end of the cover plate (2), active carbon rods (4) are arranged at the lower ends of the left conductive columns (3), zinc plates (5) are arranged at the lower ends of the right conductive columns (3), electrolyte (12) are contained in the shell (1), the active carbon rods (4) and the zinc plates (5) are both positioned in the electrolyte (12), mounting grooves (6) are formed in the front side of the upper end of the cover plate (2), and ventilation holes (7) are formed in the middle of the bottom wall of each mounting groove (6);
sealing mechanism (8): the sealing mechanism is arranged in the cover plate (2), and the sealing mechanism (8) is in sliding connection with the mounting groove (6).
2. The high stability zinc-air cell of claim 1, wherein: sealing mechanism (8) are including connecting seat (81), closing plate (82), direction traveller (83), slider (85), regulation seat (86) and connecting rod (87), connecting seat (81) and the inner wall sliding connection of apron (2), the left end of connecting seat (81) is provided with closing plate (82), spout sliding connection that closing plate (82) and apron (2) left wall set up, the left end and mounting groove (6) sliding connection of closing plate (82), be provided with direction traveller (83) in the direction spout that the right-hand member of connecting seat (81) was seted up, the middle part of direction traveller (83) extrados is sliding connection respectively has regulation seat (86), regulation seat (86) all with the inner wall sliding connection of direction spout, slider (85) respectively with the inner wall sliding connection of apron (2), the connecting groove that slider (85) left end set up is interior through the round pin hub connection has connecting rod (87), the middle part between connecting rod (87) is through round pin hub connection, the left end of connecting rod (87) of front side is through the right-hand member of round pin hub connection with the right-hand member of adjusting seat (86) of rear side, the left end of rear side is through the left end of adjusting hub connection of the connecting rod (86) of rear side.
3. The high stability zinc-air cell of claim 2, wherein: the sealing mechanism (8) further comprises a bidirectional screw rod (84), the bidirectional screw rod (84) is rotatably connected to the right side inside the cover plate (2) through a bearing, and the sliding blocks (85) are respectively in threaded connection with the bidirectional screw rod (84) through threaded holes formed in the front end.
4. A high stability zinc air cell according to claim 3, wherein: the device also comprises a knob (13), wherein the knob (13) is arranged at the front end of the bidirectional screw rod (84).
5. The high stability zinc-air cell of claim 1, wherein: the novel conductive structure is characterized by further comprising copper caps (10), wherein the copper caps (10) are arranged at the upper ends of the conductive columns (3), and the lower ends of the copper caps (10) are fixedly connected with the upper ends of the cover plates (2) through rubber rings.
6. The high stability zinc-air cell of claim 2, wherein: still include rubber pad (9), rubber pad (9) set up in the middle part of mounting groove (6) left wall, the right-hand member of rubber pad (9) and the left end contact of closing plate (82).
7. The high stability zinc-air cell of claim 1, wherein: the sealing device further comprises a sealing gasket (11), wherein the sealing gasket (11) is arranged at the lower end of the cover plate (2), and the lower end of the sealing gasket (11) is in contact with the upper end of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320662203.1U CN220042034U (en) | 2023-03-30 | 2023-03-30 | High stability zinc air battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320662203.1U CN220042034U (en) | 2023-03-30 | 2023-03-30 | High stability zinc air battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220042034U true CN220042034U (en) | 2023-11-17 |
Family
ID=88741900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320662203.1U Active CN220042034U (en) | 2023-03-30 | 2023-03-30 | High stability zinc air battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220042034U (en) |
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2023
- 2023-03-30 CN CN202320662203.1U patent/CN220042034U/en active Active
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