CN219779797U - Pluggable energy storage device - Google Patents
Pluggable energy storage device Download PDFInfo
- Publication number
- CN219779797U CN219779797U CN202320147137.4U CN202320147137U CN219779797U CN 219779797 U CN219779797 U CN 219779797U CN 202320147137 U CN202320147137 U CN 202320147137U CN 219779797 U CN219779797 U CN 219779797U
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- Prior art keywords
- battery pack
- base
- top box
- energy storage
- plug
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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.)
- Withdrawn - After Issue
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- 238000004146 energy storage Methods 0.000 title claims abstract description 41
- 238000012423 maintenance Methods 0.000 claims abstract description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model discloses a pluggable energy storage device, which comprises a base, wherein a maintenance switch is arranged on the base; the battery pack assembly is arranged on the base; the top box is arranged at one end of the battery pack component, which is far away from the base, and is provided with an output end for outputting a power supply; the base is connected with the battery pack assembly through the connecting assembly, and the battery pack assembly is connected with the top box through the connecting assembly. The pluggable energy storage device disclosed by the utility model can solve the problems of inconvenient use and low power supply efficiency of household energy storage equipment in the prior art.
Description
Technical Field
The utility model belongs to the technical field of energy storage equipment, and particularly relates to a pluggable energy storage device.
Background
With the continuous development of household electrification, more and more electrical appliances are in life and work, so the requirements on household energy storage equipment are also greater and greater, and a stacked energy storage equipment is generated to meet the power supply problem of multiple electrical appliances. However, the stacked energy storage devices in the market at present have two forms, one is a battery module, and the two forms need to be connected from the outside of the battery by using a wire harness to supply power outwards, and the circuit connection is complex and inconvenient to operate, so that the problem of low power output efficiency is caused; the battery pack is low in group efficiency, difficult to identify and easy to stack and error when the battery modules with two different shapes are adopted for connection.
From the above, the existing household energy storage device has the problems of inconvenient use and low power supply efficiency.
Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.
Disclosure of Invention
Therefore, the utility model aims to solve the problems of inconvenient use and low power supply efficiency of the existing household energy storage equipment.
In order to solve the technical problems, the utility model provides a pluggable energy storage device, which comprises a base, wherein a maintenance switch is arranged on the base; the battery pack assembly is arranged on the base; the top box is arranged at one end of the battery pack component, which is far away from the base, and is provided with an output end for outputting a power supply; the base is connected with the battery pack assembly through the connecting assembly, and the battery pack assembly is connected with the top box through the connecting assembly.
Optionally, the battery pack assembly comprises one or more battery packs, when the battery packs are arranged in a plurality, the battery packs are stacked along the direction of the base towards the top box, and two adjacent battery packs are electrically connected through the connecting assembly.
Optionally, the connecting assembly comprises a first connecting structure and a second connecting structure which is in plug-in fit with the first connecting structure, the first connecting structure is arranged at one end of each battery pack facing the top box, the second connecting structure is arranged on the top box, the second connecting structure is arranged at one end of each battery pack facing the base, and the first connecting structure is arranged on the base.
Optionally, the first connection structure is a plug, the second connection structure is a socket, a groove structure is arranged on the battery pack, and the socket is arranged in the groove structure.
Optionally, the plug includes positive plug and negative plug, and maintenance switch passes through the wire and establishes ties between positive plug and negative plug, and the socket has positive jack and negative jack, and positive jack and positive plug peg graft, and negative jack and negative plug peg graft.
Optionally, the battery pack comprises a shell, and the plug and the socket are both arranged on the shell; the battery cell is arranged in the shell; the battery core is connected in series between the positive plug and the positive jack through a wire, and the negative plug and the negative jack are connected through a wire.
Optionally, the pluggable energy storage device further comprises a voltage acquisition unit, wherein the voltage acquisition unit is arranged in the battery pack and is used for detecting the voltage of the battery cell; the voltage stabilizing unit is arranged in the top box, and the voltage acquisition unit is electrically connected with the voltage stabilizing unit through the connecting component.
Optionally, the pluggable energy storage device further comprises a positioning structure, the positioning structure comprises a convex column and a slot, the convex column is arranged at one end of each battery pack facing the top box, the slot is arranged on the top box, the slot is arranged at one end of each battery pack facing the base, and the convex column is arranged on the base; or one end of each battery pack facing the top box is provided with a slot, the top box is provided with a convex column, one end of each battery pack facing the base is provided with a convex column, and the base is provided with a slot.
Optionally, the base is provided with supporting feet, and the supporting feet are arranged at four corners of the base; and/or a handle is arranged on the battery pack of the battery pack assembly; and/or the battery pack of the battery pack assembly is provided with a reinforcing structure which is arranged in a concave-convex manner.
Optionally, the pluggable energy storage device further comprises a relay, the relay is arranged in the top box, and the relay is arranged between the output end and the connecting component.
The technical scheme provided by the utility model has the following advantages:
the pluggable energy storage device comprises a base, a battery pack assembly, a top box and a connecting assembly, wherein a maintenance switch is arranged on the base, the battery pack assembly is arranged on the base, the top box is arranged at one end, far away from the base, of the battery pack assembly, the top box is provided with an output end for outputting a power supply, and the base is connected with the battery pack assembly and the top box through the connecting assembly.
As can be seen from the above, the pluggable energy storage device of the utility model is provided with the base below the battery pack assembly to realize supporting, the top surface of the battery pack assembly is provided with the top box to realize outward power transmission, the connection between the battery pack assembly and the base and the top box is realized by adopting the connecting assembly, the pluggable energy storage device has the advantage of convenient disassembly, meanwhile, the arrangement of the base is beneficial to enhancing the placement stability of the battery pack assembly, and the arrangement of the top box is beneficial to protecting the output end of a power supply; the maintenance switch is arranged on the base, so that the power-off operation can be realized through the maintenance switch when maintenance is needed, and the use is convenient; the battery pack assembly of the utility model comprises one or more battery packs, when a plurality of battery packs are arranged, a plurality of identical battery packs are superposed through the connecting assembly, the number of the battery packs can be increased or reduced according to the requirement, and the plurality of identical battery packs have good power transmission and stable connection.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a pluggable energy storage device according to the present utility model;
fig. 2 is a schematic perspective view of a base provided by the present utility model;
fig. 3 is a schematic view of one of three-dimensional structures of a battery pack according to the present utility model;
fig. 4 is a schematic view of another three-dimensional structure of the battery pack according to the present utility model;
fig. 5 is a schematic diagram of an internal circuit connection relationship provided by the present utility model.
Reference numerals illustrate:
10. a base; 20. a battery pack assembly; 210. a battery pack; 211. a battery cell; 220. a handle; 230. a reinforcing structure; 30. a top box; 410. a convex column; 420. a slot; 50. a support leg; 60. maintaining the switch; 70. a connection assembly; 710. a first connection structure; 711. a positive electrode plug; 712. a negative electrode plug; 720. a second connection structure; 721. an anode jack; 722. a negative electrode jack; 80. a relay; 90. a voltage stabilizing unit; 1100. a wire; 1200. and a voltage acquisition unit.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.
The household energy storage device solves the problems of inconvenient use and low power supply efficiency of the existing household energy storage device in the prior art.
The embodiment provides a pluggable energy storage device, as shown in fig. 1 to 5, the pluggable energy storage device comprises a base 10, a battery pack assembly 20, a top box 30 and a connecting assembly 70, a maintenance switch 60 is arranged on the base 10, the battery pack assembly 20 is arranged on the base 10, the top box 30 is arranged at one end, far away from the base 10, of the battery pack assembly 20, the top box 30 is provided with an output end for outputting a power supply, and the base 10 and the battery pack assembly 20 and the top box 30 are connected through the connecting assembly 70.
Specifically, the pluggable energy storage device of the utility model is provided with the base 10 below the battery pack assembly 20 to realize support, the top surface of the battery pack assembly 20 is provided with the top box 30 to realize outward power transmission, the connection between the battery pack assembly 20 and the base 10 and the top box 30 is realized by adopting the connecting assembly 70, the pluggable energy storage device has the advantage of convenient disassembly, meanwhile, the arrangement of the base 10 is beneficial to enhancing the stability of the placement of the battery pack assembly 20, and the arrangement of the top box 30 is beneficial to protecting the output end of a power supply; the maintenance switch 60 is arranged on the base 10, so that the power-off operation can be realized through the maintenance switch 60 when maintenance is needed, and the use is convenient.
Further, a maintenance switch 60 on the base 10 is built in with safety for current protection and also for voltage interruption during maintenance. The connection assembly 70, the maintenance switch 60 and the safety on the base 10 are sequentially connected using a wire 1100 or a copper bar.
In this embodiment, the top box 30 has a receiving cavity, where the receiving cavity is used for placing a circuit and an electrical component, and the top box 30 has an interface, where the interface is used as an output end of a power supply, and the interface may be a socket, a USB interface, or the like.
As shown in fig. 1 to 5, the battery pack assembly 20 includes one or more battery packs 210, and when the battery packs 210 are provided in plurality, the plurality of battery packs 210 are stacked in a direction of the base 10 toward the top box 30, and adjacent two battery packs 210 are electrically connected through the connection assembly 70.
Specifically, the battery pack assembly 20 of the present utility model includes one or more battery packs 210, and when a plurality of battery packs 210 are provided, a plurality of identical battery packs 210 are stacked by the connection assembly 70, and the number of battery packs 210 can be increased or decreased as needed, and the plurality of identical battery packs 210 have good power transmission and stable connection.
The number of the battery packs 210 is preferably 4 to 8.
The battery pack 210 is the same type of battery pack 210, the product line is simple, and the base 10 and the top box 30 have large differences from the battery pack 210, so that the materials are not easy to mix. When the battery pack 210 is damaged, the same type of battery pack 210 can be used for replacement, which is more convenient.
Further, the battery pack 210 includes a housing and a battery cell 211, and the battery cell 211 is mounted inside the housing.
In this embodiment, the connection assembly 70 includes a first connection structure 710 and a second connection structure 720 that is in plug-in fit with the first connection structure 710, a first connection structure 710 is disposed at an end of each battery pack 210 facing the top box 30, a second connection structure 720 is disposed on the top box 30, a second connection structure 720 is disposed at an end of each battery pack 210 facing the base 10, and a first connection structure 710 is disposed on the base 10.
The first connection structure 710 and the second connection structure 720 are in plug-in fit to realize electrical connection, and meanwhile, the plug-in mode has the guiding installation effect, so that the installation and positioning are convenient.
It should be noted that the first connection structure 710 may be one of a plug and a socket, and the second connection structure 720 may be the other of the plug and the socket.
In this embodiment, the first connection structure 710 is a plug, the second connection structure 720 is a socket, wherein the plug is disposed at the top of the battery pack 210 and the base 10, the socket is disposed at the bottom of the top box 30 and the battery pack 210, that is, the top of each battery pack 210 is provided with the socket at the bottom of the plug, and the connection is performed in a manner of matching the plug and the socket, so as to have a positioning effect.
Further, a groove structure is provided on the battery pack 210, and a socket is provided inside the groove structure. That is, the slot structure is disposed on the bottom surface of the battery pack 210, and the socket is disposed inside the slot structure, so that the socket does not protrude from the bottom surface of the battery pack 210, and transportation and carrying are facilitated.
In this embodiment, the plugs include a positive plug 711 and a negative plug 712, the maintenance switch 60 in the base 10 is connected in series between the positive plug 711 and the negative plug 712 through a wire 1100, the socket on the battery pack 210 has a positive jack 721 and a negative jack 722, the positive jack 721 is plugged with the positive plug 711, the negative jack 722 is plugged with the negative plug 712, the positive jack 721 on the battery pack 210 is electrically connected with the battery cell 211, and the negative jack 722 on the battery pack 210 is connected with the negative plug 712 on the battery pack 210 through the wire 1100.
In this embodiment, the socket on the top box 30 has a positive jack 721 and a negative jack 722, the positive jack 721 and the negative jack 722 are electrically connected with the output end through a wire 1100, and the top box 30 is also provided with a relay 80 and a safety, where the relay 80 and the safety are arranged on the wire 1100 between the output end and the socket for controlling the on-off of the current.
In this embodiment, the pluggable energy storage device further includes a positioning structure, the positioning structure includes a protruding column 410 and a slot 420 for accommodating the protruding column 410, where the protruding column 410 may be a protruding pin, and the connection stability between the battery pack 210 and the connection stability between the battery pack assembly 20 and the base 10 and the top box 30 are improved by adopting a matching manner of the protruding column 410 and the slot 420. The present embodiment provides the following two embodiments according to the arrangement structure of the boss 410 and the slot 420.
It should be noted that the connection assembly 70 of the present utility model has not only a plug and a socket but also a low voltage connection terminal for electrical connection.
In the embodiment shown in fig. 1 to 5, a protruding column 410 is disposed at an end of each battery pack 210 facing the top box 30, a slot 420 is disposed on the top box 30, a slot 420 is disposed at an end of each battery pack 210 facing the base 10, and a protruding column 410 is disposed on the base 10.
Specifically, the direction of each battery pack 210 facing the top box 30 is the top of the battery pack 210, the direction of the base 10 is the bottom of the battery pack 210, the top of each battery pack 210 is provided with a convex column 410, the bottom of each battery pack 210 is provided with a slot 420, and the battery packs 210 are positioned through the structure of the convex columns 410 accommodated by the slots 420, so as to ensure the stability of installation among the battery packs 210; the boss 410 of the base 10 is protruded into the inside of the slot 420 of the battery pack 210 to achieve positioning between the base 10 and the battery pack 210. The posts 410 on the battery pack 210 extend into the interior of the slots 420 on the top box 30 to achieve positioning between the battery pack 210 and the top box 30.
In a specific implementation manner, not shown, in this embodiment, a slot 420 is disposed at an end of each battery pack 210 facing the top box 30, a protrusion 410 is disposed on the top box 30, a protrusion 410 is disposed at an end of each battery pack 210 facing the base 10, and a slot 420 is disposed on the base 10.
Specifically, the direction of each battery pack 210 facing the top box 30 is the top of the battery pack 210, the direction of the base 10 is the bottom of the battery pack 210, the top of each battery pack 210 is provided with a slot 420, the bottom of each battery pack 210 is provided with a convex column 410, and the battery packs 210 are positioned through the structure of the slot 420 for accommodating the convex columns 410, so as to ensure the stability of installation among the battery packs 210; the protrusion 410 of the battery pack 210 protrudes into the inside of the slot 420 on the base 10 to achieve positioning between the base 10 and the battery pack 210. The posts 410 on the top box 30 extend into the interior of the slots 420 on the battery pack 210 to enable positioning between the battery pack 210 and the top box 30.
As shown in fig. 1 to 5, the battery pack 210 includes a housing and a battery cell 211, both a plug and a socket are provided on the housing, and the battery cell 211 is installed inside the housing; the battery cell 211 is connected in series between a positive plug 711 and a positive jack 721 through a wire 1100, and a negative plug 712 and a negative jack 722 are connected through the wire 1100.
Further, when there is a large power demand, a plurality of battery packs 210 are stacked and electrically connected by the connection assembly 70, so as to realize a structure in which a plurality of battery cells 211 are connected in series.
In this embodiment, the pluggable energy storage device further includes a voltage collecting unit 1200 and a voltage stabilizing unit 90, the voltage collecting unit 1200 is disposed in the battery pack 210, the voltage collecting unit 1200 is used for detecting the voltage of the battery cell 211, the voltage stabilizing unit 90 is disposed in the top box 30, and the voltage collecting unit 1200 is electrically connected with the voltage stabilizing unit 90 through the connection component 70.
Specifically, the voltage acquisition unit 1200 is connected in parallel to the battery core 211 to detect the voltage of the battery core 211, and the voltage information acquired by the voltage acquisition unit 1200, i.e. the CMU, is transmitted to the voltage stabilizing unit 90, i.e. the BMS unit, through the connection component 70 for control.
As shown in fig. 1 to 5, the pluggable energy storage device further includes a relay 80, the relay 80 is disposed inside the top box 30, and the relay 80 is disposed between the output terminal and the connection assembly 70.
In this embodiment, in order to facilitate the installation and removal of the battery pack 210, a handle 220 is provided on the battery pack 210; to improve the strength of the battery pack 210, the battery pack 210 has a reinforcing structure 230 provided thereon with protrusions and depressions to improve the strength of the battery pack 210; to improve the stability of the base 10, the base 10 is provided with legs 50, and the legs 50 are provided at four corners of the base 10.
From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:
1. the pluggable energy storage device is characterized in that the base 10 is arranged below the battery pack assembly 20 to realize supporting, the top box 30 is arranged on the top surface of the battery pack assembly 20 to realize outward power transmission, the battery pack assembly 20 is connected with the base 10 and the top box 30 by adopting the connecting assembly 70, the pluggable energy storage device has the advantage of convenient disassembly, meanwhile, the arrangement of the base 10 is beneficial to enhancing the placement stability of the battery pack assembly 20, and the arrangement of the top box 30 is beneficial to protecting the output end of a power supply;
2. the maintenance switch 60 is arranged on the base 10, so that the power-off operation can be realized through the maintenance switch 60 when maintenance is needed, and the use is convenient;
3. the battery pack assembly 20 of the present utility model includes one or more battery packs 210, and when a plurality of battery packs 210 are provided, a plurality of identical battery packs 210 are stacked through the connection assembly 70, and the number of battery packs 210 can be increased or decreased as needed, and the plurality of identical battery packs 210 have good power transmission and stable connection.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.
Claims (10)
1. A pluggable energy storage device, comprising:
the base (10) is provided with a maintenance switch (60);
a battery pack assembly (20), the battery pack assembly (20) being disposed on the base (10);
a top box (30), wherein the top box (30) is arranged at one end of the battery pack assembly (20) far away from the base (10), and the top box (30) is provided with an output end for outputting a power supply;
the base (10) and the battery pack assembly (20) and the top box (30) are connected through the connecting assembly (70).
2. The pluggable energy storage device of claim 1, wherein the battery pack assembly (20) includes one or more battery packs (210), and when the battery packs (210) are provided in plurality, a plurality of the battery packs (210) are stacked in a direction of the base (10) toward the top box (30), and adjacent two of the battery packs (210) are electrically connected through the connection assembly (70).
3. The pluggable energy storage device according to claim 2, wherein the connection assembly (70) comprises a first connection structure (710) and a second connection structure (720) in plug-in fit with the first connection structure (710), the first connection structure (710) is provided at one end of each battery pack (210) facing the top box (30), the second connection structure (720) is provided at one end of each battery pack (210) facing the base (10), and the first connection structure (710) is provided at the base (10).
4. The pluggable energy storage device of claim 3, wherein,
the first connection structure (710) is a plug, the second connection structure (720) is a socket, a groove structure is arranged on the battery pack (210), and the socket is arranged in the groove structure.
5. The pluggable energy storage device of claim 4, wherein,
the plug comprises a positive plug (711) and a negative plug (712), the maintenance switch (60) is connected in series between the positive plug (711) and the negative plug (712) through a wire (1100), the socket is provided with a positive jack (721) and a negative jack (722), the positive jack (721) is plugged with the positive plug (711), and the negative jack (722) is plugged with the negative plug (712).
6. The pluggable energy storage device of claim 5, wherein the battery pack (210) includes:
the plug and the socket are arranged on the shell;
a battery cell (211), the battery cell (211) being mounted inside the housing;
the battery core (211) is connected in series between the positive electrode plug (711) and the positive electrode jack (721) through a wire (1100), and the negative electrode plug (712) and the negative electrode jack (722) are connected through the wire (1100).
7. The pluggable energy storage device of claim 6, further comprising:
the voltage acquisition unit (1200), the voltage acquisition unit (1200) is arranged inside the battery pack (210), and the voltage acquisition unit (1200) is used for detecting the voltage of the battery cell (211);
the voltage stabilizing unit (90), the voltage stabilizing unit (90) is arranged in the top box (30), and the voltage acquisition unit (1200) is electrically connected with the voltage stabilizing unit (90) through the connecting component (70).
8. The pluggable energy storage device of claim 2, further comprising a positioning structure including a post (410) and a slot (420),
the convex columns (410) are arranged at one end, facing the top box (30), of each battery pack (210), the slots (420) are arranged on the top box (30), the slots (420) are arranged at one end, facing the base (10), of each battery pack (210), and the convex columns (410) are arranged on the base (10); or alternatively
The slots (420) are formed in one end, facing the top box (30), of each battery pack (210), the convex columns (410) are formed in the top box (30), the convex columns (410) are formed in one end, facing the base (10), of each battery pack (210), and the slots (420) are formed in the base (10).
9. The pluggable energy storage device of claim 1, wherein,
the base (10) is provided with support legs (50), and the support legs (50) are arranged at four corners of the base (10); and/or
A handle (220) is arranged on a battery pack (210) of the battery pack assembly (20); and/or
The battery pack (210) of the battery pack assembly (20) is provided with a reinforcing structure (230) which is arranged in a concave-convex manner.
10. The pluggable energy storage device of any one of claims 1 to 9, further comprising:
and the relay (80) is arranged inside the top box (30), and the relay (80) is arranged between the output end and the connecting assembly (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320147137.4U CN219779797U (en) | 2023-02-01 | 2023-02-01 | Pluggable energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320147137.4U CN219779797U (en) | 2023-02-01 | 2023-02-01 | Pluggable energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779797U true CN219779797U (en) | 2023-09-29 |
Family
ID=88105374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320147137.4U Withdrawn - After Issue CN219779797U (en) | 2023-02-01 | 2023-02-01 | Pluggable energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219779797U (en) |
-
2023
- 2023-02-01 CN CN202320147137.4U patent/CN219779797U/en not_active Withdrawn - After Issue
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