CN220585801U - External redundant backup power supply - Google Patents
External redundant backup power supply Download PDFInfo
- Publication number
- CN220585801U CN220585801U CN202321438185.5U CN202321438185U CN220585801U CN 220585801 U CN220585801 U CN 220585801U CN 202321438185 U CN202321438185 U CN 202321438185U CN 220585801 U CN220585801 U CN 220585801U
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- Prior art keywords
- wall
- power supply
- fixed
- redundant
- redundant power
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- 239000004065 semiconductor Substances 0.000 claims description 26
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 5
- 238000005057 refrigeration Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses an external redundant backup power supply, which comprises a box body, wherein an upper baffle plate is fixed at the upper end of the inner wall of the box body, redundant power supplies are arranged on the inner wall of the box body and positioned on two sides above control equipment, a supporting part for supporting and installing the redundant power supplies is arranged at the bottom end of the outer wall of the redundant power supplies, and a radiating part for actively radiating the redundant power supplies is arranged on the supporting part.
Description
Technical Field
The utility model relates to the technical field of power supply equipment, in particular to an external redundant backup power supply.
Background
In order to avoid the situation that the power supply fails and the whole system is powered off in the using process of the existing intelligent matrix system, a group of external redundant power supplies are arranged for matching use, and the function of the external redundant power supplies is mainly that when the main power supply fails or fails, the normal operation and data storage of equipment are ensured by switching to the standby power supply, and the intelligent matrix system is usually composed of more than two power supply units and automatically or manually realizes the switching of the main power supply and the standby power supply through a special control circuit.
And for redundant power, chinese patent publication No. CN218733868U discloses a redundant hot standby power convenient to fix, this patent technology is fixed in the inside of protecting crust with the power body installation through simple and swift mode, so make the power body can be fixed in the inside of protective structure, so it is convenient fixed in the time of guaranteeing that it possesses the use protectiveness, but, when the power is in use, the electronic component of its inside can produce a large amount of heats when carrying out voltage conversion, and these heats can be discharged from the terminal surface of the top of power or great area such as bottom through the radiator fan of power built-in, but above-mentioned patent technology has set up roof and cushion at terminal surface under with respectively when implementing, and roof and cushion also can shelter from the radiating end of power when supporting the power, thereby influence the radiating to the power, lead to the inside condition that probably to appear the heat accumulation, thereby can cause the damage to the components and parts of power inside, cause the fault when using to the redundant power.
Therefore, based on the above technical problems, it is necessary for those skilled in the art to develop an external redundant backup power supply.
Disclosure of Invention
The utility model aims to provide an external redundant backup power supply.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model discloses an external redundant backup power supply, which comprises a box body, wherein a movable plate is fixed at the bottom end of the outer wall of the box body, a bottom partition plate is fixed at the bottom end of the inner wall of the box body, an upper partition plate is fixed at the upper end of the inner wall of the box body, redundant power supplies are arranged on the inner wall of the box body and positioned on two sides above control equipment, a supporting part for supporting and installing the redundant power supplies is arranged at the bottom end of the outer wall of the redundant power supplies, and a heat dissipation part for actively dissipating heat of the redundant power supplies is arranged on the supporting part.
Further, control equipment is fixed on the outer wall bottom of the bottom partition plate and the inner wall bottom of the box, a side partition plate is fixed between the center of the outer wall top of the upper partition plate and the inner wall bottom of the box, and the redundant power supply is arranged on two sides of the side partition plate.
Further, the supporting part comprises two drawing frames, cushion blocks are fixed on two sides of the bottom end of the inner wall of the drawing frames, and two sides of the bottom end of the outer wall of the redundant power supply are fixedly connected with the top end of the outer wall of the cushion blocks.
Further, the inner wall of pull frame is all set up flutedly twice, the inner wall of recess all is provided with the side fixed plate, the one end that the side fixed plate is close to the recess all is fixed with the blotter, the side fixed plate passes through the blotter and is fixed with the inner wall of recess, redundant power supply's outer wall both ends all are connected with the side fixed plate.
Further, the outer wall both sides of pull frame are all fixed and are equipped with the location draw runner, the inner wall of box, the outer wall top of last baffle and the outer wall both sides of side baffle all offer spacing spout in the position department that corresponds with the location draw runner, the outer wall of location draw runner all with the inner wall sliding connection of spacing spout.
Further, the outer wall front end of box all has seted up and has got the mouth of putting in the junction with the pull frame, the outer wall front end of box all is provided with preceding baffle in the department that corresponds the mouth of putting with getting, the outer wall front end of pull frame all is fixed with the outer wall rear end of the preceding baffle of corresponding position.
Further, the heat dissipation part comprises a semiconductor refrigerating sheet, a heat dissipation groove is formed in the center of the bottom end of the outer wall of the drawing frame, and a mounting through groove is formed in the center of the upper end and the lower end of the outer wall of the drawing frame.
Further, the outer wall of the semiconductor refrigerating piece is fixed with the inner wall of the installation through groove, the refrigerating end of the semiconductor refrigerating piece faces the outer wall bottom of the redundant power supply, the heating end of the semiconductor refrigerating piece faces the outer wall bottom of the drawing frame, and the through groove is formed in the position, corresponding to the heat dissipation groove, of the rear end of the outer wall of the box body.
Further, the outer wall front end of preceding baffle all is fixed with the handle, the outer wall front end of preceding baffle just all is fixed with the frame that admits air with semiconductor refrigeration piece position department that corresponds, the flabellum that admits air is all installed to the inner wall both sides of frame that admits air, the outer wall front end of preceding baffle just all is provided with the mesh baffle with the flabellum position department that admits air.
Further, the air guide pipes are fixed on the top end of the inner wall of the drawing frame and above the redundant power supply heat dissipation openings, the air outlets are fixed on the upper ends of the two sides of the outer wall of the box body at the positions corresponding to the air guide pipes, and the other ends of the air guide pipes are communicated with the inner walls of the air outlets at the corresponding positions.
In the technical scheme, the external redundant backup power supply provided by the utility model has the following beneficial effects:
according to the utility model, the redundant power supply can be fixed in the drawing frame through the cushion block and the side fixing plate, and a person can put in or draw out the redundant power supply through the front baffle plate, so that the redundant power supply can be conveniently dismounted and maintained by subsequent persons, and the bottom end of the redundant power supply can be prevented from being contacted with the bottom end of the inner wall of the drawing frame through the cushion block, so that the redundant power supply can be fixed in the drawing frame and the situation that the heat dissipation ends on the upper surface and the lower surface of the redundant power supply are insufficient due to coverage can be avoided;
according to the utility model, the heat radiation performance of the redundant power supply can be enhanced through the cooperation of the air inlet frame, the air inlet fan blades and the semiconductor refrigerating sheets, so that the heat radiation performance of the redundant power supply can be prevented from being influenced when the redundant power supply is arranged in the box body, and the condition that the redundant power supply is burnt out due to insufficient heat radiation in the use process is avoided.
Drawings
For a clearer description of embodiments of the present application or of the solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments described in the present utility model, and that other drawings may be obtained according to these drawings for a person skilled in the art.
FIG. 1 is a schematic diagram of an external structure of an external redundant backup power supply according to an embodiment of the present utility model in a front view direction;
FIG. 2 is a schematic diagram of a cross-sectional structure of an external redundant backup power supply in the front direction according to an embodiment of the present utility model;
FIG. 3 is an enlarged schematic diagram of the structure of the external redundant backup power supply shown in FIG. 2A according to an embodiment of the present utility model;
fig. 4 is a schematic perspective view of a drawing frame in an external redundant backup power supply according to an embodiment of the present utility model;
fig. 5 is a schematic perspective view of a side fixing plate in an external redundant backup power supply according to an embodiment of the present utility model.
Reference numerals illustrate: 100. a case; 110. a moving plate; 120. a bottom partition; 130. a control device; 131. a side separator; 140. an upper partition plate; 200. drawing a frame; 201. positioning a slide bar; 210. a cushion block; 220. a side fixing plate; 221. a cushion pad; 230. a semiconductor refrigeration sheet; 250. a front baffle; 251. an air inlet frame; 252. a mesh separator; 253. air inlet fan blades; 300. redundant power supplies; 400. an air guide pipe; 410. and an air outlet.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.
See fig. 1-5;
the utility model relates to an external redundant backup power supply, which comprises a box body 100, wherein a movable plate 110 is fixed at the bottom end of the outer wall of the box body 100, the movable plate 110 comprises a supporting plate and universal wheels, the movable plate 110 is arranged to facilitate a person to push the movable plate to move, a bottom partition plate 120 is fixed at the bottom end of the inner wall of the box body 100, a control device 130 is fixed at the bottom end of the outer wall of the bottom partition plate 120 and the bottom end of the inner wall of the box body 100, the control device 130 is arranged to regulate and control the operation of a redundant power supply 300, the control device 130 comprises power supply modules, and each power supply module comprises a circuit board, a transformer, a capacitor, an inductor and other components; the monitoring module is used for monitoring the working state of each power supply module, the output voltage, current and other parameters of the power supply; the control module is used for controlling the switching and output voltage stabilization treatment of the power supply module and the like, the modules can be connected through a data cable or a power-on cable, an upper baffle plate 140 is fixed at the upper end of the inner wall of the box body 100, redundant power supplies 300 are arranged on the two sides of the inner wall of the box body 100 above the control equipment 130, the power connection ends of the arranged redundant power supplies 300 are arranged at the rear end, when the redundant power supplies 300 are installed, the heat dissipation ends of fans of the redundant power supplies 300 need to be upwards, the bottom ends of the redundant power supplies can be provided with heat dissipation openings for air inlet, a side baffle plate 131 is fixed between the center of the top end of the outer wall of the upper baffle plate 140 and the bottom end of the inner wall of the box body 100, the redundant power supplies 300 are arranged on two sides of the side baffle plate 131, and the arranged side baffle plates 131 play a role of separating the two redundant power supplies 300;
the bottom end of the outer wall of the redundant power supply 300 is provided with a supporting part for supporting and installing the redundant power supply 300, the supporting part comprises two drawing frames 200, the two drawing frames 200 are provided with cushion blocks 210, the cushion blocks 210 are respectively fixed on two sides of the bottom end of the inner wall of each drawing frame 200, the bottom end of each arranged cushion block 210 is used for supporting the bottom end of the redundant power supply 300, the redundant power supply 300 can keep a suspended state after being installed on the drawing frames 200, the air inlet end of the redundant power supply 300 is prevented from being blocked, two sides of the bottom end of the outer wall of the redundant power supply 300 are fixedly connected with the top end of the outer wall of each cushion block 210, preferably, the bottom end of the outer wall of the arranged redundant power supply 300 can be fixed with the top end of the outer wall of each cushion block 210 through bolts, the inner wall of each drawing frame 200 is provided with grooves, the inner wall of each groove is provided with a side fixing plate 220, one end, close to each groove, of each side fixing plate 220 is provided with a cushion pad 221, the arranged cushion pad is made of a rubber pad, the arranged redundancy plate 221 is used for playing a certain buffering role when two sides of the redundant power supply 300 and the side fixing plate 220 are arranged, the two ends of the redundant power supply 300 are fixedly connected with the two sides of the outer wall 220 of each side fixing plate through the corresponding side fixing plate, and the outer wall 220 can be fixedly connected with the outer wall 220 through the bolt;
the two sides of the outer wall of the drawing frame 200 are fixedly provided with positioning sliding strips 201, the inner wall of the box body 100, the top end of the outer wall of the upper partition plate 140 and the two sides of the outer wall of the side partition plate 131 are respectively provided with a limiting sliding chute at the position corresponding to the positioning sliding strips 201, the outer wall of the positioning sliding strips 201 are respectively connected with the inner wall of the limiting sliding chute in a sliding manner, the arranged positioning sliding strips 201 and limiting sliding chute are used for guiding the sliding direction of the drawing frame 200 under the condition that the sliding of the drawing frame 200 is not influenced, the front end of the outer wall of the box body 100 is respectively provided with a picking and placing opening at the position corresponding to the picking and placing opening, the front end of the outer wall of the box body 100 is respectively provided with a front baffle 250, the front end of the outer wall of the drawing frame 200 is respectively fixed with the rear end of the front baffle 250 at the corresponding position, and the front baffle 250 is used for sealing the picking and placing opening and simultaneously facilitating personnel to take out the redundant power supply 300;
the support part is provided with a heat dissipation part for actively dissipating heat of the redundant power supply 300, the heat dissipation part comprises a semiconductor refrigerating plate 230, a heat dissipation groove is formed in the center of the bottom end of the outer wall of the drawing frame 200, the heat dissipation groove is formed in order to dissipate heat of the heat-generating end of the semiconductor refrigerating plate 230, a mounting through groove is formed in the center of the upper end and the lower end of the outer wall of the drawing frame 200, the outer wall of the semiconductor refrigerating plate 230 is fixed with the inner wall of the mounting through groove, the refrigerating end of the semiconductor refrigerating plate 230 faces the bottom end of the outer wall of the redundant power supply 300, the heat-generating end of the semiconductor refrigerating plate 230 faces the bottom end of the outer wall of the drawing frame 200, the semiconductor refrigerating plate 230 is a device for preparing cold by utilizing the thermal-electric effect of a semiconductor, also called a thermoelectric refrigerator, which connects two different metals by conductors to be connected with direct current, the temperature at one junction is reduced, the temperature at the other junction is increased, through grooves are formed in the rear end of the outer wall of the box body 100 at positions corresponding to the heat dissipation grooves, after the semiconductor refrigerating sheets 230 are electrified, the refrigerating ends at the top ends of the semiconductor refrigerating sheets can be used for refrigerating, so that cold air can enter the redundant power supply 300 from the bottom ends of the redundant power supplies 300, handles are fixed at the front ends of the outer walls of the front baffles 250, air inlet frames 251 are fixed at the front ends of the outer walls of the front baffles 250 and positions corresponding to the semiconductor refrigerating sheets 230, air inlet fan blades 253 are arranged on two sides of the inner wall of the air inlet frames 251, the air inlet fan blades 253 are arranged for installing the air inlet fan blades 253, and the air inlet fan blades 253 are arranged for enlarging the air entering between the redundant power supply 300 and the semiconductor refrigerating sheets 230; the cold air enters the redundant power supply 300 faster, simultaneously, in order to accelerate the rate of air flowing in the redundant power supply 300, thereby the radiating effect to the air can be improved, the outer wall front end of the front baffle 250 and the position corresponding to the air inlet fan blade 253 are all provided with the mesh baffle 252, the mesh baffle 252 of setting is in order to reduce the dust in the air and enter into the redundant power supply 300, the air guide pipe 400 is all fixed on the inner wall top of the drawing frame 200 and above the radiating opening of the redundant power supply 300, the air outlet 410 is all fixed on the upper end of the two sides of the outer wall of the box 100 in the position corresponding to the air guide pipe 400, the other end of the air guide pipe 400 is communicated with the inner wall of the air outlet 410 in the corresponding position, the air guide pipe 400 is arranged in order to discharge the hot air discharged from the top end of the redundant power supply 300 from the inner wall top of the box 100, preferably, a plurality of groups of fans for radiating can be arranged in the air outlet 410, so as to improve the radiating rate of the hot air at the top end of the redundant power supply 300, thereby the radiating effect to the redundant power supply 300 can be improved in a certain range.
In the utility model, a person can pull out the drawing frame 200 through the front baffle 250, place the redundant power supply 300 on the drawing frame 200, fix the bottom end of the redundant power supply 300 with the top end of the outer wall of the cushion block 210, fix the two sides of the outer wall of the redundant power supply 300 with the two sides of the outer wall of the side fixing plate 220, and convey the drawing frame 200 into the picking and placing port after fixing;
when the redundant power supply 300 is used in an emergency, the heat dissipation fan at the top end of the redundant power supply 300 is started to dissipate heat of components in the redundant power supply 300, and meanwhile, the air inlet fan blade 253 at the front end of the air inlet frame 251 is also started to accelerate the air inlet quantity at the bottom end of the redundant power supply 300, so that the air speed in the redundant power supply 300 is accelerated, the heat dissipation effect is improved, and the hot air exhausted from the top end of the redundant power supply 300 is exhausted to the outside from the air outlet 410 through the air guide pipe 400;
when the temperature sensor for detecting the redundant power supply 300 detects that the temperature of the redundant power supply 300 is not reduced, the control end of the device starts the semiconductor refrigeration piece 230, the refrigeration end of the semiconductor refrigeration piece 230 can produce cold air, the cold air can enter the redundant power supply 300 through the bottom end of the redundant power supply 300 to improve the heat dissipation effect, and the heat generated by the heating end of the semiconductor refrigeration piece 230 can be discharged through the rear end of the outer wall of the box body 100.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (8)
1. The utility model provides an external redundant backup power supply, includes box (100), the outer wall bottom mounting of box (100) has movable plate (110), the inner wall bottom mounting of box (100) has end baffle (120), the inner wall upper end of box (100) is fixed with baffle (140), a serial communication port, the inner wall of box (100) just is located the top both sides of control equipment (130) and all is provided with redundant power supply (300), the outer wall bottom of redundant power supply (300) is provided with the supporting part that supports installation to redundant power supply (300), the supporting part includes pull frame (200), the quantity that pull frame (200) set up is two, the inner wall bottom both sides of pull frame (200) all are fixed with cushion (210), the outer wall bottom both sides of redundant power supply (300) all are connected with cushion (210) outer wall top fixed, the inner wall of pull frame (200) has both sides to set up the recess twice, the inner wall of recess all is provided with side fixed plate (220), side fixed plate (220) are close to the both ends of cushion (221) and are fixed with both ends (220), the support part is provided with a heat dissipation part for actively dissipating heat of the redundant power supply (300).
2. The external redundant backup power supply according to claim 1, wherein a control device (130) is fixed on the bottom end of the outer wall of the bottom partition plate (120) and the bottom end of the inner wall of the box body (100), a side partition plate (131) is fixed between the center of the top end of the outer wall of the upper partition plate (140) and the bottom end of the inner wall of the box body (100), and the redundant power supply (300) is arranged on two sides of the side partition plate (131).
3. The external redundant backup power supply according to claim 1, wherein positioning sliding strips (201) are fixedly arranged on two sides of the outer wall of the drawing frame (200), limiting sliding grooves are formed in the positions, corresponding to the positioning sliding strips (201), of the inner wall of the box body (100), the top end of the outer wall of the upper partition plate (140) and two sides of the outer wall of the side partition plate (131), and the outer wall of the positioning sliding strips (201) are in sliding connection with the inner wall of the limiting sliding grooves.
4. The external redundant backup power supply according to claim 3, wherein the front end of the outer wall of the box body (100) is provided with a picking and placing port at the joint with the drawing frame (200), the front end of the outer wall of the box body (100) is provided with a front baffle (250) at the position corresponding to the picking and placing port, and the front end of the outer wall of the drawing frame (200) is fixed with the rear end of the outer wall of the front baffle (250) at the corresponding position.
5. The external redundant backup power supply of claim 4 wherein the heat sink comprises a semiconductor cooling fin (230), a heat sink is provided at the center of the bottom end of the outer wall of the drawing frame (200), and a mounting through slot is provided at the center of the upper and lower ends of the outer wall of the drawing frame (200).
6. The external redundant backup power supply according to claim 5, wherein the outer wall of the semiconductor cooling fin (230) is fixed with the inner wall of the installation through groove, the cooling end of the semiconductor cooling fin (230) faces the bottom end of the outer wall of the redundant power supply (300), the heating end of the semiconductor cooling fin (230) faces the bottom end of the outer wall of the drawing frame (200), and the through grooves are formed in the positions corresponding to the heat dissipation grooves at the rear end of the outer wall of the box body (100).
7. The external redundant backup power supply according to claim 6, wherein handles are fixed at front ends of outer walls of the front baffle plates (250), air inlet frames (251) are fixed at front ends of outer walls of the front baffle plates (250) and positions corresponding to the semiconductor refrigerating sheets (230), air inlet fan blades (253) are mounted at two sides of inner walls of the air inlet frames (251), and mesh partition plates (252) are arranged at front ends of outer walls of the front baffle plates (250) and positions corresponding to the air inlet fan blades (253).
8. The external redundant backup power supply according to claim 5, wherein air guide pipes (400) are fixed on the top ends of the inner walls of the drawing frames (200) and above the heat dissipation openings of the redundant power supply (300), air outlets (410) are fixed on the upper ends of the two sides of the outer wall of the box body (100) at positions corresponding to the air guide pipes (400), and the other ends of the air guide pipes (400) are communicated with the inner walls of the air outlets (410) at the corresponding positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321438185.5U CN220585801U (en) | 2023-06-07 | 2023-06-07 | External redundant backup power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321438185.5U CN220585801U (en) | 2023-06-07 | 2023-06-07 | External redundant backup power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220585801U true CN220585801U (en) | 2024-03-12 |
Family
ID=90114160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321438185.5U Active CN220585801U (en) | 2023-06-07 | 2023-06-07 | External redundant backup power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220585801U (en) |
-
2023
- 2023-06-07 CN CN202321438185.5U patent/CN220585801U/en active Active
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