CN219843040U - Safety power supply - Google Patents
Safety power supply Download PDFInfo
- Publication number
- CN219843040U CN219843040U CN202321131509.0U CN202321131509U CN219843040U CN 219843040 U CN219843040 U CN 219843040U CN 202321131509 U CN202321131509 U CN 202321131509U CN 219843040 U CN219843040 U CN 219843040U
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- Prior art keywords
- battery
- air
- power supply
- accommodating cavity
- cooling
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- 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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- 230000004308 accommodation Effects 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 60
- 238000003825 pressing Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 12
- 230000001105 regulatory effect Effects 0.000 abstract description 12
- 238000003860 storage Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000112 cooling gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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Abstract
The embodiment of the utility model provides a security power supply, and relates to the technical field of battery manufacturing. The security power supply includes: a battery case having a receiving cavity; a battery disposed in the accommodation chamber; a plurality of support columns arranged between the battery and the cavity wall of the accommodating cavity and used for supporting the battery; and a plurality of temperature regulating plates are paved on the cavity wall of the accommodating cavity, and each temperature regulating plate is provided with a runner for heat exchange medium to flow so as to take away heat generated by the battery. According to the safety power supply provided by the utility model, the battery is supported and fixed through the plurality of support columns, so that the space between the battery and the inner side cavity wall of the accommodating cavity is ensured, heat generated during the operation of the battery can be conveniently dissipated into the air in the accommodating cavity, and the heat in the air in the accommodating cavity is taken away through the heat exchange medium flowing in the flow channel of the temperature regulating plate, so that the problem that the heat dissipation effect of the storage battery of the safety power supply in the prior art is not ideal is solved, the heat dissipation efficiency of the safety power supply is improved, and the heat dissipation effect of the safety power supply is improved.
Description
Technical Field
The utility model relates to the technical field of battery manufacturing, in particular to a safety power supply.
Background
The safety power supply is a power supply for supplying power to accident safety loads, which is arranged for avoiding the out-of-control of a unit, the damage of equipment and the influence of long-term failure of power supply of a power plant when the accident of a whole plant is stopped, and the direct-current accident safety power supply generally adopts a storage battery to supply power to the direct-current accident safety loads such as a direct-current lubricating oil pump.
In order to avoid heat accumulation in the battery box caused by the working process of the battery, the prior safety power supply is generally provided with a grid at the bottom of the battery box so as to accelerate the circulation of air inside and outside the battery box through the grid and reduce the temperature inside the battery box, but because the density of hot air is less than that of cold air, the hot air in the battery box can be accumulated above the inside of the battery box, so that the hot air is difficult to be discharged from the grid below the battery box, and the heat dissipation effect of the battery is not ideal.
Therefore, a need exists for a security power supply that can solve the above-mentioned heat dissipation problem.
Disclosure of Invention
The embodiment of the utility model aims to provide a safety power supply which is used for solving the problem that the heat dissipation effect of a storage battery of the safety power supply in the prior art is not ideal.
In order to achieve the above object, an embodiment of the present utility model provides a security power supply including:
a battery case having a receiving cavity;
a battery disposed in the accommodation chamber;
a plurality of support columns arranged between the battery and the cavity wall of the accommodating cavity and used for supporting the battery;
and a plurality of temperature regulating plates are paved on the cavity wall of the accommodating cavity, and each temperature regulating plate is provided with a runner for heat exchange medium to flow so as to take away heat generated by the battery.
Specifically, a pair of air openings are formed in the shell wall of the battery shell, and air enters and exits the accommodating cavity through the pair of air openings.
Specifically, the security power supply further includes: a pair of filter assemblies, each of which is provided with a filter assembly for filtering the air entering the accommodating cavity;
each filter component comprises an air pipe and a filter plate, the air pipe is communicated with the accommodating cavity through an air port, the filter plate is arranged at one end of the air pipe away from the air port, and the filter plate is used for filtering air entering the accommodating cavity.
Specifically, the security power supply further includes: and the ventilator is arranged in the air pipe of the filtering component at one side and used for replacing the air in the accommodating cavity.
Specifically, the security power supply further includes: and the cooling assembly is arranged in the air pipe of the filtering assembly at the other side and is used for cooling the air entering the accommodating cavity through the air pipe.
Specifically, the cooling assembly includes: a refrigerator, a pair of refrigeration pipes and a plurality of refrigeration sheets;
the refrigerator is detachably arranged on the pipe wall of the corresponding air pipe and used for cooling and conveying cooling medium in the refrigerator;
the pair of refrigerating pipes are communicated with the refrigerator and each refrigerating sheet, and the refrigerator conveys the cooled cooling medium to each refrigerating sheet through the pair of refrigerating pipes;
the refrigerating sheet is used for carrying out heat exchange with air entering the accommodating cavity through the corresponding air pipe.
Specifically, the pipe wall of the air pipe provided with the cooling component is provided with a mounting hole, and the refrigerator is detachably arranged on the pipe wall of the corresponding air pipe by being embedded into the mounting hole.
Specifically, the cooling assembly further comprises: and the pressing frame is detachably arranged at the orifice of the mounting hole and used for pressing the refrigerator into the mounting hole.
Specifically, the cooling assembly further comprises: a limiting ring sleeve;
the air duct is characterized in that an annular groove is formed in the corresponding air duct around the orifice of the mounting hole, the limiting ring sleeve can be embedded into the annular groove, and the limiting ring sleeve is used for limiting the orifice position of the mounting hole of the pressing frame.
Specifically, the security power supply further includes: the handle is arranged on the pressing frame.
According to the safety power supply provided by the utility model, the battery is supported and fixed in the accommodating cavity through the plurality of supporting columns, and meanwhile, the space is reserved between the battery and the cavity wall of the accommodating cavity through the supporting columns, so that heat generated during the operation of the battery can be quickly subjected to heat exchange with air in the accommodating cavity, the heat generated during the operation of the battery is emitted into the air in the accommodating cavity, so that the battery can be cooled, in order to avoid the condition that the temperature of the air in the accommodating cavity is too high and the cooling effect of the battery is influenced, the temperature regulating plates are paved on the inner cavity wall of the accommodating cavity, the flow passage is formed in each temperature regulating plate, and the heat emitted into the air by the battery in the accommodating cavity is taken away through the heat exchange medium flowing in the flow passage of each temperature regulating plate, so that the effect of quickly cooling the battery is achieved, the problem that the heat dissipation effect of the storage battery of the safety power supply in the prior art is not ideal is solved, and the heat dissipation efficiency of the safety power supply is improved.
Additional features and advantages of embodiments of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain, without limitation, the embodiments of the utility model. In the drawings:
FIG. 1 is a cross-sectional view of a security power supply provided by an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a mounting structure of a cooling assembly and an air duct of a security power supply according to an embodiment of the present utility model;
FIG. 3 is an exploded view of a cooling assembly and an air duct in a security power supply according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a cooling assembly in a security power supply according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of an air duct in a security power supply according to an embodiment of the present utility model.
Description of the reference numerals
1-a battery case; 2-cell; 3-supporting columns; 4-a temperature adjusting plate; 5-a filter assembly; 6-a ventilator; 7-a cooling assembly; 8-a handle; 9-a temperature sensor; 10-a receiving cavity; 11-tuyere; 51-air pipes; 52-filtering plates; 71-a refrigerator; 72-refrigerating pipe; 73-refrigerating sheets; 74-pressing a frame; 75-limiting collar; 12-cover plate; 13-a handle; 21-a wiring terminal; 510-mounting holes; 511-ring groove; 512-annular boss.
Detailed Description
The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
FIG. 1 is a cross-sectional view of a security power supply; FIG. 2 is a schematic diagram of the mounting structure of the cooling assembly and the air duct of the security power supply; FIG. 3 is an exploded view of a cooling assembly and air duct in a power source; FIG. 4 is a schematic diagram of the cooling assembly in the power source; fig. 5 is a schematic structural view of an air duct in the security power supply.
As shown in fig. 1 to 5, the present utility model provides a security power supply including:
a battery case 1 having a housing chamber 10;
a battery 2 disposed in the accommodation chamber 10;
a plurality of support columns 3 provided between the battery 2 and the cavity wall of the accommodating cavity 10 for supporting the battery 2;
a plurality of temperature adjusting plates 4 are paved on the cavity wall of the accommodating cavity 10, and each temperature adjusting plate 4 is provided with a runner for flowing heat exchange medium to take away heat generated by the battery 2.
The safety power supply provided by the utility model has the advantages that the battery 2 is supported and fixed through the plurality of support columns 3, the space between the battery 2 and the inner side cavity wall of the accommodating cavity 10 is ensured, the heat generated during the operation of the battery 2 can be conveniently emitted into the air in the accommodating cavity 10, and the heat exchange medium flowing in the flow channel of the temperature regulating plate 4 is used for heat exchange
The heat in the air in the accommodating cavity 10 is taken away, the problem that the heat dissipation effect of the storage battery of the safety power supply in the prior art is not ideal is solved, the heat dissipation efficiency of the safety power supply is improved, and the heat dissipation effect of the safety power supply is improved.
In one embodiment, as shown in fig. 1, an opening is formed at one end of a battery housing 1, a cover plate 12 is arranged at the opening end of the battery housing 1, a cover plate 12 is covered at the opening end of the battery housing 1 to form a containing cavity 10 in the battery housing 1, the opening end of the battery housing 1 is provided to facilitate the installation of a battery 2 and a support column 3 in the battery housing 1, the support column 3 is made of rubber materials, the surface of the battery 2 can not be damaged while the battery 2 is supported, a temperature adjusting plate 4 is paved on the bottom of the battery housing 1 and one surface of the cover plate 12 facing the containing cavity 10, a heat exchange medium is introduced into a runner of the temperature adjusting plate 4 to take away heat generated during the operation of the battery 2, the heat exchange medium is cooling liquid or cooling gas, a through hole is formed in the cover plate 12, a connecting terminal 21 of the battery 2 extends out of the containing cavity 10 through the through hole, a load device is facilitated to be connected with the battery 2 through the connecting terminal 21, a safety handle 13 is arranged on the cover plate 12, and a worker moves the safety power supply through the handle 13.
In order to improve the cooling efficiency of the battery 2 in the accommodating cavity 10, a pair of air openings 11 are formed in the wall of the battery case 1, and air enters and exits the accommodating cavity 10 through the pair of air openings 11. As shown in fig. 1, the pair of air vents 11 are extended identically, so that it is possible to ensure that air convection is formed between the pair of air vents 11, and the flow of air in the accommodating chamber 10 and outside air is accelerated, to improve the cooling efficiency of the battery 2 by the flowing air.
To ensure cleanliness of the air entering the containing chamber 10, the safety power supply further comprises: a pair of filter assemblies 5, one filter assembly 5 is provided at each tuyere 11 for filtering air entering the accommodating chamber 10;
each filter assembly 5 comprises an air duct 51 and a filter plate 52, the air duct 51 being in communication with the receiving chamber 10 via the tuyere 11, the filter plate 52 being arranged at the end of the air duct 51 remote from the tuyere 11, the filter plate 52 being adapted to filter air entering the receiving chamber 10.
Air entering the receiving chamber 10 is filtered by the filter plate 52 from entering the receiving chamber 10
The service life of the battery 2 is affected by large-particle dust carried in the air, and in order to accelerate the flow of air in the accommodating chamber 10, the safety power supply further comprises: and a ventilation fan 6 arranged in the air pipe 51 of the filtering assembly 5 at one side for replacing the air in the accommodating cavity 10. The cooling of the battery 2 is accelerated by the ventilation fan 6 displacing the air in the accommodating chamber 10 and accelerating the flow of the air in the accommodating chamber 10.
In order to further improve the cooling efficiency of the battery 2, the safety power supply further includes: a cooling module 7 is arranged in the air duct 51 of the filter module 5 on the other side for cooling the air entering the receiving chamber 10 via the air duct 51. As shown in fig. 1, a ventilation fan 6 is arranged in one air pipe 51, a cooling assembly 7 is arranged in the other air pipe 51, air with higher temperature in the accommodating cavity 10 is replaced outside the accommodating cavity 10 through the ventilation fan 6, fresh air enters the accommodating cavity 10 through the other air pipe 51, and the air which is about to enter the accommodating cavity 10 is cooled through the cooling assembly 7 before the fresh air enters the accommodating cavity 10, so that the cooling efficiency of the battery 2 is improved under the holding of the temperature adjusting plate 4 and the cooling assembly 7.
In one embodiment, as shown in fig. 2, the cooling assembly 7 includes: a refrigerator 71, a pair of refrigeration pipes 72, and a plurality of refrigeration sheets 73;
the refrigerator 71 is detachably arranged on the pipe wall of the corresponding air pipe 51 and is used for cooling and conveying cooling medium in the refrigerator 71;
a pair of cooling pipes 72 communicating with the refrigerator 71 and each of the cooling fins 73, the refrigerator 71 delivering the cooled cooling medium to each of the cooling fins 73 through the pair of cooling pipes 72;
the cooling fin 73 is used for heat exchange with air entering the accommodating chamber 10 through the corresponding air duct 51.
Specifically, the pipe wall of the air pipe 51 provided with the cooling assembly 7 is provided with a mounting hole 510, and the refrigerator 71 is detachably arranged on the pipe wall of the corresponding air pipe 51 by being embedded in the mounting hole 510.
Specifically, the cooling assembly 7 further includes: and the pressing frame 74 is detachably arranged at the orifice of the mounting hole 510 and is used for pressing the refrigerator 71 into the mounting hole 510.
Specifically, the cooling assembly 7 further includes: a stop collar 75;
a ring groove 511 is arranged on the corresponding air pipe 51 around the orifice of the mounting hole 510, the limiting collar 75 can be nested in the ring groove 511, and the limiting collar 75 is used for limiting the orifice position of the pressing frame 74 in the mounting hole 510.
As shown in fig. 2, 3 and 5, the cross section of the air duct 51 is rectangular, one end of the air duct 51 is communicated with the air port 11, the other end of the air duct 51 is provided with the filter plate 52, for facilitating the cooling assembly 7 to be arranged in the air duct 51, as shown in fig. 2, 3 and 5, a stepped mounting hole 510 is arranged at the top of the air duct 51, so that the cooler 71 of the cooling assembly 7 is embedded in the mounting hole 510, a pair of cooling pipes 72 are connected with the cooler 71, a plurality of cooling fins 73 are uniformly distributed on the cooling pipes 72, a cooling medium is conveyed into the cooler 71 through a cooling pump (not shown), the cooling medium is cooling liquid or cooling gas, the cooling pump is communicated with the cooler 71 through a connecting pipe, the cooling liquid entering the cooler 71 is conveyed into each cooling fin 73 through one cooling pipe 72 after the cooling treatment of the cooler 71, fresh air is subjected to heat exchange with the cooling fin 73 when entering the accommodating cavity 10 through the air duct 51 provided with the cooling assembly 7, the cooling liquid flowing in the cooling fin 73 is subjected to heat exchange with air to be subjected to the air entering the accommodating cavity 10, and the cooling liquid is cooled down again through the cooling pipe 71. In order to facilitate the staff to know the temperature in the accommodating cavity 10 in real time, a temperature sensor 9 is arranged in the accommodating cavity 10, the temperature sensor 9 is used for detecting the temperature value in the accommodating cavity 10, the temperature sensor 9 is electrically connected with a refrigerator 71 of the cooling assembly 7, the refrigerator 71 is opened or closed according to the detection result of the temperature sensor 9, and when the temperature in the accommodating cavity 10 is detected to exceed the set temperature value, the refrigerator 71 is started to refrigerate the cooling medium, so that the temperature of the air entering the accommodating cavity 10 is reduced.
In order to ensure that the refrigerator 71 can be firmly embedded in the mounting hole 510, the pressing frame 74 is arranged, the refrigerator 71 is pressed in the mounting hole 510 through the pressing frame 74, in order to limit the position of the pressing frame 74, the refrigerator 71 is prevented from moving when the refrigerator 71 is pressed, the refrigerator 71 is prevented from falling out of the mounting hole 510, as shown in fig. 5, a ring groove 511 is formed around the mounting hole 510, meanwhile, an annular boss 512 is formed between the mounting hole 510 and the ring groove 511, the limiting collar 75 is nested in the ring groove 511, the pressing frame 74 is embedded in the inner ring of the limiting collar 75 when the refrigerator 71 is pressed, the position of the pressing frame 74 is limited through the limiting collar 75, the refrigerator 71 can be always pressed in the mounting hole 510, in order to ensure that the limiting collar 75 can play a limiting role, namely, a plurality of gaskets are arranged between the limiting collar 75 and the groove bottom of the ring groove 511, so that the limiting collar 75 can protrude out of the annular boss 512.
In order to facilitate the disassembly and maintenance of the press frame 74, a handle 8 is arranged at the edge of the press frame 74, and a worker can conveniently insert the press frame 74 into the inner ring of the limiting ring sleeve 75 or pull out the press frame from the inner ring of the limiting ring sleeve 7 through the handle 8.
According to the safety power supply provided by the utility model, the battery is supported and fixed in the accommodating cavity through the plurality of supporting columns, and meanwhile, the space is reserved between the battery and the cavity wall of the accommodating cavity through the supporting columns, so that heat generated during the operation of the battery can be quickly subjected to heat exchange with air in the accommodating cavity, the heat generated during the operation of the battery is emitted into the air in the accommodating cavity, so that the battery can be cooled, in order to avoid the condition that the temperature of the air in the accommodating cavity is too high and the cooling effect of the battery is influenced, the temperature regulating plates are paved on the inner cavity wall of the accommodating cavity, the flow passage is formed in each temperature regulating plate, and the heat emitted into the air by the battery in the accommodating cavity is taken away through the heat exchange medium flowing in the flow passage of each temperature regulating plate, so that the effect of quickly cooling the battery is achieved, the problem that the heat dissipation effect of the storage battery of the safety power supply in the prior art is not ideal is solved, and the heat dissipation efficiency of the safety power supply is improved.
The foregoing details of the optional implementation of the embodiment of the present utility model have been described in detail with reference to the accompanying drawings, but the embodiment of the present utility model is not limited to the specific details of the foregoing implementation, and various simple modifications may be made to the technical solution of the embodiment of the present utility model within the scope of the technical concept of the embodiment of the present utility model, and these simple modifications all fall within the protection scope of the embodiment of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations of embodiments of the present utility model are not described in detail.
In addition, any combination of various embodiments of the embodiment of the present utility model can be also made, as long as it does not deviate from the idea of the embodiment of the present utility model, and it should also be regarded as the actual embodiment of the present utility model
The disclosure of the examples.
Claims (10)
1. A security power supply, the security power supply comprising:
a battery case (1) having a housing chamber (10);
a battery (2) disposed within the housing chamber (10);
a plurality of support columns (3) arranged between the battery (2) and the cavity wall of the accommodating cavity (10) for supporting the battery (2);
the temperature adjusting plates (4) are paved on the cavity wall of the accommodating cavity (10), and each temperature adjusting plate (4) is provided with a flow passage for heat exchange medium to flow so as to take away heat generated by the battery (2).
2. The safety power supply according to claim 1, wherein a pair of air vents (11) are provided in a wall of the battery case (1), and air is introduced into the accommodating chamber (10) through the pair of air vents (11).
3. The power source of claim 2, further comprising: a pair of filter assemblies (5), one filter assembly (5) being provided at each tuyere (11) for filtering air entering the accommodation chamber (10);
each filter assembly (5) comprises an air pipe (51) and a filter plate (52), the air pipe (51) is communicated with the accommodating cavity (10) through an air port (11), the filter plate (52) is arranged at one end, far away from the air port (11), of the air pipe (51), and the filter plate (52) is used for filtering air entering the accommodating cavity (10).
4. The power source of claim 3, further comprising: and the ventilation fan (6) is arranged in the air pipe (51) of the filtering assembly (5) at one side and is used for replacing air in the accommodating cavity (10).
5. The power source of claim 4, further comprising: a cooling component (7) arranged in the air pipe (51) of the filtering component (5) at the other side for
Cooling air entering the accommodating cavity (10) through the air pipe (51).
6. The safety power supply according to claim 5, characterized in that the cooling assembly (7) comprises: a refrigerator (71), a pair of refrigeration pipes (72) and a plurality of refrigeration sheets (73);
the refrigerator (71) is detachably arranged on the pipe wall of the corresponding air pipe (51) and used for cooling and conveying cooling medium in the refrigerator (71);
a pair of refrigerating pipes (72) are communicated with the refrigerator (71) and each refrigerating sheet (73), and the refrigerator (71) conveys the cooled cooling medium to each refrigerating sheet (73) through the pair of refrigerating pipes (72);
the refrigerating sheet (73) is used for heat exchange with air entering the accommodating cavity (10) through the corresponding air pipe (51).
7. The safety power supply according to claim 6, characterized in that the pipe wall of the air pipe (51) provided with the cooling component (7) is provided with a mounting hole (510), and the refrigerator (71) is detachably arranged on the pipe wall of the corresponding air pipe (51) by being embedded into the mounting hole (510).
8. The safety power supply according to claim 7, characterized in that the cooling assembly (7) further comprises: and the pressing frame (74) is detachably arranged at the orifice of the mounting hole (510) and is used for pressing the refrigerator (71) into the mounting hole (510).
9. The safety power supply according to claim 8, characterized in that the cooling assembly (7) further comprises: a stop collar sleeve (75);
the air duct is characterized in that an annular groove (511) is formed in the air duct (51) surrounding the orifice of the mounting hole (510), the limiting ring sleeve (75) can be embedded into the annular groove (511), and the limiting ring sleeve (75) is used for limiting the orifice position of the pressing frame (74) in the mounting hole (510).
10. The secured power supply of claim 9, further comprising: and a handle (8) arranged on the pressing frame (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131509.0U CN219843040U (en) | 2023-05-11 | 2023-05-11 | Safety power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131509.0U CN219843040U (en) | 2023-05-11 | 2023-05-11 | Safety power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219843040U true CN219843040U (en) | 2023-10-17 |
Family
ID=88303707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321131509.0U Active CN219843040U (en) | 2023-05-11 | 2023-05-11 | Safety power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219843040U (en) |
-
2023
- 2023-05-11 CN CN202321131509.0U patent/CN219843040U/en active Active
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