CN216391934U - Formation and grading power module, formation and grading cabinet and formation and grading system - Google Patents
Formation and grading power module, formation and grading cabinet and formation and grading system Download PDFInfo
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- CN216391934U CN216391934U CN202123071311.1U CN202123071311U CN216391934U CN 216391934 U CN216391934 U CN 216391934U CN 202123071311 U CN202123071311 U CN 202123071311U CN 216391934 U CN216391934 U CN 216391934U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a chemical-capacitive power module, a chemical-capacitive cabinet and a chemical-capacitive system, wherein the chemical-capacitive power module comprises at least one charge and discharge plate and a heat dissipation assembly. The heat dissipation assembly comprises a liquid cooling component, a liquid inlet pipe and a liquid outlet pipe, wherein the liquid cooling component is provided with a containing cavity communicated with the liquid inlet pipe and the liquid outlet pipe; at least one side of any charge and discharge plate is provided with a liquid cooling part, and the liquid cooling part is contacted with the charge and discharge plate. The formation partial volume power module of this structure carries the coolant liquid in the runner to the liquid cooling part through the feed liquor pipe, and the liquid cooling part carries out heat-conduction with the contact of charging and discharging board in order to dispel the heat to the charging and discharging board, and the radiating efficiency is high, and the coolant liquid after the heat exchange flows through the drain pipe, and heating system can be connected to the drain pipe, realizes heat recovery and utilizes.
Description
Technical Field
The utility model relates to the technical field of lithium ion battery formation equipment, in particular to a formation and grading power module, a formation and grading cabinet and a formation and grading system.
Background
In the lithium ion battery formation and capacity combination process, a battery cell needs to be charged and discharged through a charge and discharge plate, the charge and discharge plate generates a large amount of heat loss in the process, and electronic elements in the charge and discharge plate can be damaged due to overhigh temperature. In the prior art, an air conditioner and a large number of fans are generally used for blowing air to a charge and discharge panel so as to reduce the temperature of the charge and discharge panel. According to the heat dissipation mode, the air conditioner and the fan are far away from the charge and discharge panel, the heat dissipation effect is general, and the power consumption of the air conditioner and the fan is large.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is to overcome the defects of general effect and high power consumption caused by heat dissipation of the charge and discharge plates by the air conditioner and the fan in the prior art, so that a component-capacitance power module, a component-capacitance cabinet and a component-capacitance system are provided.
In order to solve the above problems, the present invention provides a chemical composition capacity power module, which includes at least one charge and discharge board and a heat dissipation assembly. The liquid cooling component is provided with a containing cavity communicated with the liquid inlet pipe and the liquid outlet pipe; at least one side of any charge and discharge plate is provided with the liquid cooling part, and the liquid cooling part is in contact with the charge and discharge plate.
Optionally, in the above chemical composition capacity power module, the liquid cooling component is a cooling plate, an inlet of the cooling plate is communicated with the liquid inlet pipe, and an outlet of the cooling plate is communicated with the liquid outlet pipe.
Optionally, in the above chemical composition and capacitance power supply module, the liquid cooling component is disposed on the wide side of the charge and discharge plate.
Optionally, in the above chemical composition and capacity power supply module, a first heat conduction member is disposed between the liquid cooling member and the charge and discharge plate, and two surfaces of the first heat conduction member respectively contact the liquid cooling member and the charge and discharge plate.
Optionally, in the above chemical composition and capacity grading power supply module, at least one of two sides of the long side of the liquid cooling component is provided with the charge and discharge plate, and the charge and discharge plate is abutted to the long side of the liquid cooling component.
Optionally, in the above chemical composition capacity-sharing power module, a second heat conduction member is disposed between the liquid cooling member and the charge and discharge plate, a wide edge of the second heat conduction member contacts the charge and discharge plate, and a thick edge of the second heat conduction member contacts the liquid cooling member.
Optionally, in the power module with the chemical component capacity, a thickness of a contact end of the second heat conduction member and the liquid cooling member is greater than a thickness of an end of the second heat conduction member opposite to the liquid cooling member.
Optionally, in the chemical composition capacity power module, a quick connector is disposed on the liquid inlet pipe and/or the liquid outlet pipe.
Optionally, the power module with the variable capacity further includes a fixing component, and the liquid cooling component and/or the charging and discharging plate are/is disposed on the fixing component.
The utility model provides a chemical component capacitance cabinet which comprises any one of the chemical component capacitance power supply modules.
The utility model provides a chemical component capacity system which comprises at least two chemical component capacity cabinets, a liquid inlet main pipe and a liquid outlet main pipe, wherein all liquid inlet pipes are connected to the liquid inlet main pipe in parallel, and all liquid outlet pipes are connected to the liquid outlet main pipe in parallel.
The utility model has the following advantages:
1. according to the chemical composition capacity-sharing power module, the cooling liquid is conveyed into the flow channel of the liquid cooling part through the liquid inlet pipe, the liquid cooling part is in contact with the charge and discharge plate to conduct heat so as to dissipate heat of the charge and discharge plate, the heat dissipation efficiency is high, the cooling liquid after heat exchange flows out through the liquid outlet pipe, and the liquid outlet pipe can be connected with a heat supply system, so that heat energy recycling is realized.
2. According to the formation and capacity-sharing power supply module provided by the utility model, the cooling plate is arranged on the wide side of the charge and discharge plate, the contact area between the cooling plate and the charge and discharge plate is large, and the heat dissipation effect is good.
3. According to the formation and capacity-sharing power supply module provided by the utility model, the plurality of charge and discharge plates are arranged in parallel at intervals, a space for accommodating the cooling plate is formed between the adjacent charge and discharge plates, the charge and discharge plates are compactly arranged, and the space utilization rate is high.
4. According to the component-volume power supply module provided by the utility model, the first heat-conducting component has good heat-conducting property, and can quickly conduct heat on the charge and discharge plate to the cooling plate, so that the heat-radiating effect is improved. The first heat conducting part plays a role in water insulation, prevents the charging and discharging plate from being short-circuited, and ensures the normal use of the charging and discharging plate.
5. According to the formation and grading power supply module, the quick connector is used for disconnecting the pipeline when the pipeline is maintained. The quick coupling is a non-drip quick coupling, which can prevent the leakage of the cooling liquid when the pipeline is disconnected.
6. According to the formation and capacity-sharing power module provided by the utility model, the charge and discharge plates are arranged on at least one of the two sides of the long edge of the liquid cooling component, and only one liquid cooling component is needed to be arranged to radiate the heat of one row of charge and discharge plates on one side or two rows of charge and discharge plates on the two sides of the liquid cooling component.
7. According to the formation and partial capacity power module provided by the utility model, the charge and discharge plates on two sides of the cooling plate are symmetrically arranged, the charge and discharge plates on each side of the cooling plate are arranged in parallel at intervals, and the formation and partial capacity power module is compact in structure.
8. According to the component-volume power module provided by the utility model, the wide edge of the second heat conducting part is in contact with the charge and discharge plates, and the thick edge of the second heat conducting part is in contact with the liquid cooling part, so that the space between the adjacent charge and discharge plates is fully utilized, the contact area between the second heat conducting part and the charge and discharge plates is increased, the heat exchange area is increased, and the heat dissipation effect is improved.
The thickness of the contact end of the second heat conduction component and the cooling plate is larger than that of the end opposite to the cooling plate, so that the contact area of the second heat conduction component and the cooling plate is increased, and the heat dissipation effect is improved.
9. The formation and partial volume system provided by the utility model can dissipate heat of cooling liquid supplied by all formation and partial volume power modules through one liquid inlet main pipe and one liquid outlet main pipe, and has high heat dissipation efficiency.
10. According to the formation and grading system provided by the utility model, the formation and grading power supply modules are provided with a plurality of components and grading power supply modules, and the plurality of components and grading power supply modules are stacked up and down, so that the compactness of the formation and heat dissipation system is improved, and the occupied area is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a top view of a component-capacitive power module provided in embodiment 2 of the present invention;
fig. 2 is a top view of a component-capacitive power module provided in embodiment 2 of the present invention;
fig. 3 is a plan view of a chemical component capacity power supply module provided in embodiment 3 of the present invention;
fig. 4 shows a schematic diagram of a formation heat dissipation system provided in embodiment 4 of the present invention.
Description of reference numerals:
1-a box body; 2-a power supply module; 21-charge and discharge plates; 3-a heat dissipation assembly; 31-liquid cooling means; 32-a liquid inlet pipe; 33-a liquid outlet pipe; 34-a first thermally conductive member; 35-a second thermally conductive member; 36-a quick coupling; 4-a stationary part; 5-a liquid inlet header pipe; 6-liquid outlet header pipe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a chemical capacitive power module, as shown in fig. 1 and 2, which includes at least one charging and discharging board and a heat dissipation assembly. The heat dissipation assembly 3 comprises a liquid cooling part 31, a liquid inlet pipe 32 and a liquid outlet pipe 33, wherein the liquid cooling part 31 is provided with a containing cavity communicated with the liquid inlet pipe 32 and the liquid outlet pipe 33, and a flow channel is arranged in the containing cavity; at least one side of any charge and discharge plate 21 is provided with a liquid cooling part 31, and the liquid cooling part 31 is in contact with the charge and discharge plate 21.
The formation of this structure contains power module carries the coolant liquid in liquid cooling part 31's the runner through feed liquor pipe 32, and liquid cooling part 31 carries out heat-conduction with the contact of charging and discharging board 21 in order to dispel the heat to charging and discharging board 21, and the radiating efficiency is high, and the coolant liquid after the heat exchange flows out through drain pipe 33, and drain pipe 33 joinable heating system realizes heat recovery and utilizes.
Example 2
The present embodiment provides a chemical component content cabinet, as shown in fig. 1 and fig. 2, which includes a chemical component content power module and a box body in embodiment 1. The charge and discharge plate is arranged in the box body.
The formation partial volume cabinet of this structure, liquid cooling part 31 and the contact of charging and discharging board 21 carry out heat-conduction in order to dispel the heat to charging and discharging board 21, and the radiating efficiency is high, and the coolant liquid after the heat exchange flows out through drain pipe 33, and heat supply system can be connected to drain pipe 33, realizes heat recovery and utilizes.
Further, the liquid cooling unit 31 is a cooling plate, an inlet of the cooling plate is connected to the liquid inlet pipe 32, and an outlet of the cooling plate is connected to the liquid outlet pipe 33. The cooling plate is internally provided with a flow channel for cooling liquid to flow, the inlet and the outlet of the cooling plate are respectively communicated with a pipe joint, and the pipe joints at the two sides of the cooling plate are respectively communicated with a liquid inlet pipe 32 and a liquid outlet pipe 33.
Referring to fig. 1 and 2, the cross section of the box body 1 is rectangular, the X-direction extending edge of the box body 1 in fig. 1 is the wide edge thereof, the Y-direction extending edge thereof is the long edge thereof, the X-direction extending edge of the cooling plate in fig. 1 is the wide edge thereof, and the Y-direction extending edge thereof is the thick edge thereof. The cooling plate is vertically placed in the box body 1, the cooling plate is arranged on the wide side of the charge and discharge plate 21, the wide side of the cooling plate extends along the width direction of the box body 1, the contact area between the cooling plate and the charge and discharge plate 21 is large, and the heat dissipation effect is good. The cooling plate is arranged on one side of the charging and discharging plate 21 in the thickness direction, or the cooling plate can be arranged on both sides of the charging and discharging plate 21 in the thickness direction, so that the heat dissipation effect is further improved.
Optimally, the charging and discharging plates 21 are provided with a plurality of charging and discharging plates 21 which are arranged in the box body 1 at intervals in parallel, a space for accommodating the cooling plate is formed between the adjacent charging and discharging plates 21, the arrangement of the charging and discharging plates 21 is compact, and the space utilization rate is high.
Optimally, the first heat conducting part 34 is arranged between the liquid cooling part 31 and the charge and discharge plate 21, two surfaces of the first heat conducting part 34 are respectively contacted with the liquid cooling part 31 and the charge and discharge plate 21, the first heat conducting part 34 has good heat conducting performance, heat on the charge and discharge plate 21 can be quickly conducted to the cooling plate, and the heat dissipation effect is improved. Meanwhile, the first heat conducting part 34 is arranged between the cooling plate and the charge and discharge plate 21 in an isolated mode, when water drops appear in condensation on the surface of the cooling plate, the first heat conducting part 34 plays a water isolating role, short circuit of the charge and discharge plate 21 is prevented, and normal use of the charge and discharge plate 21 is guaranteed. For example, the first heat conducting part 34 is a heat conducting plate, the heat conducting plate is vertically arranged in the box body 1, two surfaces of the heat conducting plate are coated with heat conducting glue, the heat conducting plate is bonded on the charge and discharge plates 21 and the cooling plate on two sides, and the heat conducting plate is fastened on the charge and discharge plates 21 and the cooling plate through screws so as to ensure the fixing effect of the heat conducting plate and the charge and discharge plates 21 and the cooling plate and ensure the heat conducting and radiating effect.
Referring to fig. 2, the inlet pipe 32 and/or the outlet pipe 33 are provided with quick connectors 36, and the quick connectors 36 are used for disconnecting the pipes when the pipes are maintained. Preferably, quick connectors 36 are provided on both inlet tube 32 and outlet tube 33, and quick connectors 36 are non-drip quick connectors 36 to prevent leakage of coolant when the circuit is disconnected. For example, the cooling liquid may be water or a liquid having a cooling effect such as ethylene glycol. The coolant is pumped into and out of the cold plate by an electric pump.
Optionally, referring to fig. 1 and 2, the chemical capacitive power module further includes a fixing component 4 disposed in the box 1, and the liquid cooling component 31 and/or the charging and discharging plate 21 are disposed on the fixing component 4. For example, the fixing part 4 is arranged at the bottom of the box body 1, the top of the fixing part is provided with a clamping groove, the cooling plate and the charge and discharge plate 21 are clamped in the clamping groove, and the cooling plate and the charge and discharge plate 21 are fixed conveniently. As a deformation mode, the fixing part 4 can also be arranged at the top of the box body 1, the bottom of the fixing part is provided with an inserting groove, and the cooling plate and the charge and discharge plate 21 are inserted in the inserting groove; or the fixing part 4 is not arranged, and the cooling plate and the charge and discharge plate 21 can be directly hung in the box body 1.
Example 3
Referring to fig. 3, the present embodiment provides a chemical component container, which is different from embodiment 2 in that a long side of a liquid cooling member 31 extends along a longitudinal direction of a case 1, a charge/discharge plate 21 is disposed on at least one of two sides of the long side of the liquid cooling member 31, and the charge/discharge plate 21 abuts against the long side of the liquid cooling member 31. The liquid cooling part 31 is a cooling plate, and only one cooling plate needs to be arranged to radiate the heat of one row of charge and discharge plates 21 on one side or two rows of charge and discharge plates 21 on two sides of the cooling plate, the formation and capacity-sharing power supply module is simple in structure, and the liquid inlet pipe 32 and the liquid outlet pipe 33 are convenient to arrange.
Preferably, the wide sides of the charge and discharge plates 21 are perpendicular to the long sides of the liquid cooling unit 31, and a plurality of charge and discharge plates 21 are disposed on both sides of the long sides of the cooling plate, and the cooling plate can simultaneously dissipate heat from two rows of charge and discharge plates 21 on both sides of the cooling plate. The charge and discharge plates 21 on the two sides of the cooling plate are symmetrically arranged, the charge and discharge plates 21 on each side of the cooling plate are arranged in parallel at intervals, and the formation and grading power supply module is compact in structure. As a modification, the wide side of the charge and discharge plate 21 may abut on the long side of the liquid cooling member 31, or the charge and discharge plate 21 and the long side of the liquid cooling member 31 may be disposed at an included angle, as long as a plurality of charge and discharge plates are disposed on one side or both sides of the long side of the liquid cooling member 31, and all the charge and discharge plates 21 can dissipate heat through one liquid cooling member 31.
Further, a second heat conducting part 35 is arranged between the liquid cooling part 31 and the charge and discharge plate 21, the wide side of the second heat conducting part 35 contacts the charge and discharge plate 21, and the thick side of the second heat conducting part 35 contacts the liquid cooling part 31, so that the space between the adjacent charge and discharge plates 21 is fully utilized, the contact area between the second heat conducting part 35 and the charge and discharge plate 21 is increased, the heat exchange area is increased, and the heat dissipation effect is improved.
Preferably, the thickness of the contact end of the second heat conduction member 35 with the cooling plate is greater than the thickness of the end opposite to the cooling plate, so as to increase the contact area between the second heat conduction member 35 and the cooling plate and improve the heat dissipation effect. The second heat-conducting member 35 is a heat-conducting plate.
The bottom of the box body 1 is provided with a fixing part 4, the upper part of the fixing part 4 is provided with a clamping groove, and the charge and discharge board 21 and the cooling board are clamped in the clamping groove. The liquid inlet pipe 32 and the liquid outlet pipe 33 are arranged on the cooling plate at intervals up and down, and the cooling liquid in the cooling plate enters and exits from top to bottom or enters and exits from top to bottom so as to improve the distribution uniformity of the cooling liquid in the height direction of the cooling plate and uniformly dissipate heat of the charge and discharge plate 21 in the height direction.
Example 4
The present embodiment provides a chemical component content system, referring to fig. 4, which includes at least two chemical component content cabinets of embodiment 2 or embodiment 3, a liquid inlet header pipe 5 and a liquid outlet header pipe 6, wherein a liquid inlet pipe 32 is connected in parallel to the liquid inlet header pipe 5, and a liquid outlet pipe 33 is connected in parallel to the liquid outlet header pipe 6. All the component-capacity power supply modules can be supplied with cooling liquid for heat dissipation through one liquid inlet header pipe 5 and one liquid outlet header pipe 6, and the heat dissipation efficiency is high.
Optimally, the formation and capacity-sharing cabinets are provided with a plurality of formation and capacity-sharing power modules which are stacked up and down, so that the compactness of a formation heat dissipation system is improved, and the occupied area is saved.
According to the above description, the present patent application has the following advantages:
1. the liquid cooling heat dissipation mode can be utilized to conduct heat conduction to dissipate heat and cool, the effect is obvious, and meanwhile heat energy recovery can be achieved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (11)
1. A variable capacity power module is characterized by comprising
At least one charge-discharge plate (21);
the heat dissipation assembly (3) comprises a liquid cooling part (31), a liquid inlet pipe (32) and a liquid outlet pipe (33), wherein the liquid cooling part (31) is provided with a containing cavity communicated with the liquid inlet pipe (32) and the liquid outlet pipe (33), and a flow channel is arranged in the containing cavity; at least one side of any charge and discharge board (21) is equipped with liquid cooling part (31), liquid cooling part (31) with charge and discharge board (21) contact.
2. The chemical composition capacity power supply module according to claim 1, wherein the liquid cooling part (31) is a cooling plate, an inlet of the cooling plate is communicated with the liquid inlet pipe (32), and an outlet of the cooling plate is communicated with the liquid outlet pipe (33).
3. A composition-capacitive power supply module according to claim 1 or 2, characterized in that the liquid cooling means (31) is provided on the broadside side of the charge and discharge plate (21).
4. The chemical composition capacity power supply module according to claim 3, wherein a first heat conducting member (34) is disposed between the liquid cooling member (31) and the charge and discharge plate (21), and both surfaces of the first heat conducting member (34) are respectively in contact with the liquid cooling member (31) and the charge and discharge plate (21).
5. The chemical composition capacitance power supply module according to claim 1 or 2, wherein the charging and discharging plate (21) is provided on at least one of two sides of the long side of the liquid cooling component (31), and the charging and discharging plate (21) abuts against the long side of the liquid cooling component (31).
6. The chemical composition capacity power supply module according to claim 5, wherein a second heat conducting member (35) is disposed between the liquid cooling member (31) and the charge and discharge plate (21), a wide side of the second heat conducting member (35) contacts the charge and discharge plate (21), and a thick side of the second heat conducting member (35) contacts the liquid cooling member (31).
7. The composition-compatible power supply module according to claim 6, wherein a thickness of a contact end of the second heat conduction member (35) with the liquid cooling member (31) is larger than a thickness of an end thereof opposite to the liquid cooling member (31).
8. A composition-capacitive power supply module according to claim 1 or 2, characterized in that a quick coupling (36) is provided on the liquid inlet pipe (32) and/or the liquid outlet pipe (33).
9. The composition-capacitive power supply module according to claim 1 or 2, further comprising a fixing part (4), wherein the liquid cooling part (31) and/or the charge and discharge plate (21) are provided on the fixing part (4).
10. A chemical composition capacitance cabinet, which is characterized by comprising the chemical composition capacitance power supply module as claimed in any one of claims 1 to 9 and a box body, wherein the charging and discharging plate is arranged in the box body.
11. A chemical component tank system comprising at least two chemical component tanks according to claim 10, a feed manifold (5) and a discharge manifold (6), all of the feed pipes (32) being connected in parallel to the feed manifold (5) and all of the discharge pipes (33) being connected in parallel to the discharge manifold (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123071311.1U CN216391934U (en) | 2021-12-08 | 2021-12-08 | Formation and grading power module, formation and grading cabinet and formation and grading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123071311.1U CN216391934U (en) | 2021-12-08 | 2021-12-08 | Formation and grading power module, formation and grading cabinet and formation and grading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216391934U true CN216391934U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123071311.1U Active CN216391934U (en) | 2021-12-08 | 2021-12-08 | Formation and grading power module, formation and grading cabinet and formation and grading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216391934U (en) |
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2021
- 2021-12-08 CN CN202123071311.1U patent/CN216391934U/en active Active
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