CN216903100U - Device for cooling battery pack - Google Patents
Device for cooling battery pack Download PDFInfo
- Publication number
- CN216903100U CN216903100U CN202123033131.4U CN202123033131U CN216903100U CN 216903100 U CN216903100 U CN 216903100U CN 202123033131 U CN202123033131 U CN 202123033131U CN 216903100 U CN216903100 U CN 216903100U
- Authority
- CN
- China
- Prior art keywords
- heat dissipation
- battery pack
- hole
- active
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a device for cooling a battery pack, which belongs to the field of battery pack accessories of electric vehicles and comprises a heat dissipation sleeve and an active heat dissipation device, wherein a through hole is formed in the heat dissipation sleeve and used for limiting a battery pack assembly and exposing an electrode end of the battery assembly; the active heat dissipation device is communicated with the through hole and used for actively dissipating heat of the battery pack assembly. Compared with the prior art, the device for cooling the battery pack has the advantages that the battery pack assembly penetrates through the through hole of the heat dissipation sleeve, the assembly and extraction processes of the battery pack assembly are simple, and the heat dissipation efficiency is high. The through hole also has the effect of spacing battery package subassembly. The arrangement of the active heat dissipation structure further improves the heat dissipation efficiency of the battery pack.
Description
Technical Field
The utility model belongs to the field of battery pack accessories of electric vehicles, and particularly relates to a device for cooling a battery pack.
Background
At present, the electric bicycle is a main vehicle for residents in two-three-wire cities in China due to the characteristics of convenience, economy, environmental protection and the like. Compared with buses, taxis and shared bicycles, electric bicycles are becoming more and more people's travel choice due to the characteristics of optimal cost performance and good travel experience.
At present, the battery pack of the electric bicycle is generally used for a long time, and the electricity consumption is rapid when the battery pack is used for a single time. The battery package is under the use of heavy current, and the battery package subassembly generates heat, leads to the battery package temperature more and more high, probably causes electric bicycle because the overtemperature can not use. Even in some abnormal conditions, the temperature of the battery pack is out of control to cause accidents.
Therefore, there is a need to design a solution to the above-mentioned problems, and further to the safety of the battery pack of the electric bicycle in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for cooling a battery pack, and aims to solve the technical problem that the battery pack in the prior art can not be normally used due to over-temperature in the using process.
In order to achieve the purpose, the utility model adopts the technical scheme that: there is provided an apparatus for cooling a battery pack, including:
the heat dissipation sleeve is provided with a through hole; the through hole is used for limiting the battery pack assembly and exposing the electrode end of the battery pack assembly;
and the active heat dissipation device is communicated with the through hole and is used for actively dissipating heat of the battery pack assembly.
Preferably, the active heat dissipation device includes:
the heat dissipation hole is arranged on the heat dissipation sleeve; the heat dissipation hole is communicated with the through hole;
the active heat dissipation part is arranged on the heat dissipation sleeve; the active heat dissipation part is communicated with the through hole; the active heat dissipation part is used for being matched with the heat dissipation holes to guide the refrigerant, guided into the through hole, of the active heat dissipation part out of the heat dissipation holes.
Preferably, the heat dissipation sleeve is in a polyhedral structure; the heat dissipation holes are distributed on any end face of the heat dissipation sleeve; the active heat dissipation part is arranged on the other end face.
Preferably, the through hole penetrates through the upper end surface and the lower end surface of the heat dissipation sleeve; the heat dissipation holes are formed in any side face of the heat dissipation sleeve.
Preferably, when the battery pack assembly is installed in the through hole, a gap for gas circulation is reserved between the battery pack assembly and the inner wall of the through hole.
Preferably, the heat dissipation hole is arranged on the first side surface of the heat dissipation sleeve; the active heat dissipation part is arranged on the second side surface; the first side surface is arranged opposite to the second side surface.
Preferably, the battery pack assembly further comprises a temperature sensing structure for monitoring the temperature of the battery pack assembly.
Preferably, the battery pack further comprises a battery management structure electrically connected with the battery pack assembly, the temperature sensing structure and the active heat dissipation device.
Preferably, the active heat sink further comprises a heat conducting structure connected to the battery pack assembly.
Preferably, the active heat sink is an air-cooled structure.
The device for cooling the battery pack has the advantages that: compared with the prior art, the device for cooling the battery pack has the advantages that the battery pack assembly penetrates through the through hole of the heat dissipation sleeve, the assembly and extraction processes of the battery pack assembly are simple, and the heat dissipation efficiency is high. The through hole also has the effect of spacing battery package subassembly. The arrangement of the active heat dissipation structure further improves the heat dissipation efficiency of the battery pack. The utility model also provides a method for cooling the battery pack.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view illustrating an apparatus for cooling a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for cooling a battery pack according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for cooling a battery pack according to an embodiment of the present invention;
fig. 4 is a schematic perspective view illustrating a heat dissipation sleeve used in an apparatus for cooling a battery pack according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a heat dissipation sleeve adopted by the device for cooling the battery pack according to the embodiment of the utility model;
fig. 6 is a schematic structural diagram of a second heat dissipation sleeve adopted by another device for cooling a battery pack according to an embodiment of the present invention.
Fig. 7 is a schematic diagram illustrating another device for cooling a battery pack according to an embodiment of the present invention.
Icon: 1. a heat dissipation sleeve; 2. a battery pack assembly; 3. an active heat sink; 31. heat dissipation holes; 32. an active heat sink; 4. a temperature sensing structure; 5. a heat conducting structure; 6. a battery management structure.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 to 7 together, a device for cooling a battery pack according to the present invention will now be described. The device for cooling the battery pack comprises: the heat dissipation device comprises a heat dissipation sleeve 1 and an active heat dissipation device 3, wherein a through hole is formed in the heat dissipation sleeve 1 and is used for limiting the battery pack assembly 2 and exposing the electrode end of the battery assembly 2; the active heat dissipation device 3 is communicated with the through hole and used for actively dissipating heat of the battery pack assembly 2.
Compared with the prior art, the device for cooling the battery pack has the advantages that the battery pack component 2 penetrates through the through hole of the heat dissipation sleeve 1, the assembly and extraction processes of the battery pack component 2 are simple, and the heat dissipation efficiency is high. When the battery pack assembly 2 penetrates into the heat dissipation sleeve 1, the electrode end of the battery pack assembly 2 is exposed, and the electrode end of the battery pack assembly 2 is conveniently communicated with an external power supply. The through-hole also serves to limit the battery pack assembly 2. The arrangement of the active heat dissipation device 3 further improves the heat dissipation efficiency of the battery pack. The device for cooling the battery pack effectively reduces the external temperature of the battery pack and the battery core, and realizes quick heat dissipation of the battery pack.
As a specific embodiment provided by the present invention, the type of the active heat dissipation device 3 is not exclusive, and includes one or more of an air cooling device (such as a fan assembly), a water cooling device, and a chemical reaction heat absorption device, as long as the active absorption or transfer of heat dissipated from the battery pack assembly 2 can be achieved in a necessary process.
In the present embodiment, referring to fig. 1 to 7, the active heat dissipation device 3 includes: a heat dissipation hole 31 and an active heat dissipation member 32, wherein the heat dissipation hole 31 is arranged on the heat dissipation sleeve 1; the heat dissipation holes 31 are communicated with the through holes; the active heat sink 32 is disposed on the heat sink sleeve 1; the active heat sink 32 communicates with the through-hole. The active heat sink 32 is used for being matched with the heat dissipation hole 31 to guide the refrigerant guided into the through hole by the active heat sink 32 out of the heat dissipation hole 31. The cooperation of the heat dissipation holes 31 and the active heat dissipation member 32 improves the heat dissipation effect of the active heat dissipation device 3.
As a specific embodiment provided by the present invention, the heat dissipation sleeve 1 is a cylindrical sleeve structure. The heat dissipation sleeve 1 is simple in structure and low in production cost.
As a specific embodiment of the present invention, please refer to fig. 1 to 7 together, the heat dissipation sleeve 1 is a polyhedron structure; the plurality of heat dissipation holes 31 are arranged on any end face of the heat dissipation sleeve 1. The active heat sink 32 is disposed on the other end surface. The heat dissipation sleeve 1 is one or more of a cuboid structure, a cube structure and a rectangular structure. One end of the heat dissipation hole 31 is communicated with the external environment, and the other end is communicated with the through hole. Any end face of the heat dissipation sleeve 1 is fully provided with the heat dissipation holes 31, so that the heat dissipation effect is effectively improved on the premise that the strength of the heat dissipation sleeve 1 is not excessively reduced.
In this embodiment, the shape of the heat dissipation hole 31 is not unique, and includes one or more of a cuboid, a cylinder, and a trapezoid structure, as long as the effect of "effectively improving the heat dissipation effect simultaneously on the premise of ensuring that the strength of the heat dissipation sleeve 1 itself is not excessively reduced" can be achieved.
As a specific embodiment of the present invention, please refer to fig. 1 to 7, the through hole penetrates through the upper and lower end surfaces of the heat dissipation sleeve 1; the heat dissipation holes 31 are disposed on either side of the heat dissipation sleeve 1. The active heat dissipation member 32 is disposed on any side of the heat dissipation sleeve 1, and the side is an opposite side to the side provided with the heat dissipation hole 31.
In this embodiment, the through holes and the heat dissipation holes 31 are not disposed on the same end surface, so as to ensure the number of the heat dissipation holes 31, and the heat dissipation sleeve 1 can be disposed on any side surface of the heat dissipation sleeve 1 by a plurality of heat dissipation holes 31, thereby improving the heat dissipation effect of the heat dissipation sleeve 1. In the process of disassembling and assembling the battery pack assembly 2, the heat dissipation holes 31 do not influence the operation process, and the battery pack assembly 2 is convenient to assemble or disassemble.
Similarly, the through hole and the active heat sink 32 are not disposed on the same end surface. The specification and size of the active heat dissipation member 32 are ensured, and the heat dissipation effect of the heat dissipation sleeve 1 is improved. In the process of disassembling and assembling the battery pack assembly 2, the active heat dissipation member 32 does not affect the operation process, thereby facilitating the assembly and disassembly of the battery pack assembly 2.
In the present embodiment, the active heat sink 32 is an air-cooled structure. The heat dissipation hole 31 is arranged on the first side surface of the heat dissipation sleeve 1; the active heat sink 32 is disposed on the second side; the first side is arranged opposite to the second side. The cold air generated by the active heat dissipation member 32 moves for a certain distance in the through hole and then is discharged from the heat dissipation hole 2, so that the heat dissipation effect of the battery pack assembly 2 is improved. The active heat dissipation member 32 is disposed opposite to the heat dissipation hole 31, and in this case, the time for the cold air generated by the active heat dissipation member 32 to flow in the through hole is longest, thereby further improving the heat dissipation effect of the battery pack assembly 2.
In another embodiment of the present invention, the water cooling equipment comprises a hose network disposed on the sidewall of the through hole, a heat exchange assembly in communication with the hose network, and a water pump assembly in communication with the heat exchange assembly and the hose network. When the battery pack assembly 2 is installed in the heat dissipation sleeve 1, the hose network is located between the battery pack assembly 2 and the side wall of the through hole. The heat exchange assembly can enable the liquid medium to complete heat conversion with the external environment or a specific medium. The water pump assembly injects the liquid medium which is subjected to heat conversion in the heat exchange assembly into the soft pipeline network, and the liquid medium flows in the soft pipeline network to take away heat generated by the battery pack assembly 2. The hose network also has a cushioning effect, improving the protection effect on the battery pack assembly 2.
As an embodiment of the present invention, referring to fig. 1 to 7, the through hole includes a gas circulation portion which is installed in the battery module 2 and is communicated with the active heat sink 32 and the heat dissipation hole 31. Specifically, the through-hole includes an accommodating portion for accommodating the battery pack assembly 2 and a gas circulation portion communicating with the accommodating portion. Namely, when the battery pack assembly 2 is installed in the through hole, a gap for gas circulation is left between the battery pack assembly 2 and the inner wall of the through hole. The active heat sink 32 communicates with the heat dissipation hole 31 through the gas circulation portion. The presence of the gas flow portion (i.e., the gap) improves the flow of the gas inside the heat dissipation sleeve 1, and further improves the heat dissipation effect of the heat dissipation sleeve 1.
In the present embodiment, the active heat sink 32 is arranged in the gas flow-through (i.e. in the gap), ensuring a flush outer side of the heat sink sleeve 1. The active heat sink 32 is also effectively protected.
Referring to fig. 1 to 7 together, the apparatus for cooling a battery pack further includes a temperature sensing structure 4 for monitoring the temperature of the battery pack assembly 2 according to an embodiment of the present invention. The temperature sensing structure 4 monitors the temperature change of the battery pack assembly 2 and transmits the temperature change to an external control terminal (such as the battery management structure 6) in the form of an electric signal.
In this embodiment, the temperature sensing structure 4 is disposed in the battery pack assembly 2, so as to transmit the temperature change condition inside the battery pack assembly 2 in real time and accurately.
In this embodiment, the temperature sensing structure 4 may also be disposed in the heat dissipation sleeve 1 and used for contacting the battery pack assembly 2. The temperature sensing structure 4 at this moment is simple in arrangement mode, replacement and maintenance schemes are adopted, and the use cost is low.
In this embodiment, the device for battery pack cooling further comprises a battery management structure 6 electrically connected to the battery pack assembly 2, the temperature sensing structure 4, and the active heat sink 32 simultaneously. The battery management structure 6 may be disposed on the battery pack assembly 2 or disposed in the heat dissipation sleeve 1.
When the battery pack assembly 2 discharges with large current, the battery pack assembly 2 generates heat due to the internal resistance of the battery pack assembly, and when the temperature exceeds a set temperature value, the temperature sensing structure 4 gives an overtemperature signal to the battery management structure 6; the battery management structure 6 transmits the over-temperature signal to the electric bicycle, the electric bicycle starts the active heat dissipation member 32, and the active heat dissipation member 32 dissipates heat of the battery pack shell; when the temperature drops below the set value, the temperature sensing structure 4 gives a signal that the temperature is normal to the battery management structure 6; the battery management structure 6 conducts this normal signal to the electric bicycle, which stops the active heat sink 32 from operating.
In this embodiment, the battery management structure 6 conducts signals to the electric bicycle through the iso international standardized serial communication protocol (i.e., CAN, controller area network).
Referring to fig. 1 to 7 together, the active heat dissipation device 3 further includes a heat conduction structure 5 connected to the battery pack assembly 2. The provision of the heat conductive structure 5 improves the transfer of heat generated by the battery pack assembly 2.
In the present embodiment, the heat conducting structure 5 is a heat conducting aluminum plate and is disposed in the battery pack assembly 2. The heat generated by the battery pack assembly 2 can be uniformly dispersed to each position of the battery pack assembly 2 through the heat conducting aluminum plate, so that the local over-high temperature of the battery pack can be avoided; the battery pack can also be quickly conducted to the outer aluminum shell of the battery through the heat-conducting aluminum plate, and the battery pack shell is quickly cooled through the matching of the active cooling piece 32 and the cooling hole 31, so that the temperature of the battery pack component 2 is within the control range.
The present invention also provides a method for cooling a battery pack, referring to fig. 1 to 7, including the following steps:
s1, preparing a heat dissipation sleeve 1; the heat dissipation sleeve 1 is integrated with an active heat dissipation part 32 and a heat dissipation hole 31;
s2, a temperature sensing structure 4 and a heat conduction structure 5 which are connected with the battery pack assembly 2 are arranged, and the battery management structure 6 is used for receiving monitoring data of the temperature sensing structure 4; wherein the battery management structure 6 is electrically connected with the active heat sink 32 and the vehicle body.
S3, penetrating the battery pack assembly 2 through the top surface and the bottom surface of the heat dissipation sleeve 1; and the battery pack assembly 2 is connected to the heat dissipation sleeve 1.
The utility model achieves the function of rapid heat dissipation by the temperature sensing structure 4, the heat conducting structure 5, the battery management structure 6 in the battery pack and the active heat dissipation member 32 which is communicated with the vehicle and then controls the vehicle.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and 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 considered as limiting the present invention.
In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; 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.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and the present invention shall be covered by the claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An apparatus for battery pack cooling, comprising:
the heat dissipation sleeve (1) is provided with a through hole; the through hole is used for limiting the battery pack assembly (2) and exposing the electrode end of the battery pack assembly (2);
and the active heat dissipation device (3) is communicated with the through hole and is used for actively dissipating heat of the battery pack assembly (2).
2. The device of claim 1, wherein: the active heat sink (3) comprises:
the heat dissipation hole (31) is arranged on the heat dissipation sleeve (1); the heat dissipation hole (31) is communicated with the through hole;
the active heat dissipation piece (32) is arranged on the heat dissipation sleeve (1), and the active heat dissipation piece (32) is communicated with the through hole; the active heat dissipation member (32) is used for being matched with the heat dissipation hole (31) to lead the refrigerant, guided into the through hole, of the active heat dissipation member (32) out of the heat dissipation hole (31).
3. An apparatus for battery pack cooling as claimed in claim 2, wherein: the heat dissipation sleeve (1) is of a polyhedral structure; the heat dissipation holes (31) are distributed on any end face of the heat dissipation sleeve (1); the active heat dissipation piece (32) is arranged on the other end face.
4. A device for battery pack cooling as claimed in claim 3, wherein: the through hole penetrates through the upper end surface and the lower end surface of the heat dissipation sleeve (1); the heat dissipation holes (31) are formed in any side face of the heat dissipation sleeve (1).
5. A device for battery pack cooling as claimed in claim 3, wherein: when the battery pack assembly (2) is arranged in the through hole, a gap for gas circulation is reserved between the battery pack assembly (2) and the inner wall of the through hole.
6. An apparatus for battery pack cooling as claimed in claim 5, wherein: the heat dissipation hole (31) is formed in the first side face of the heat dissipation sleeve (1); the active heat sink (32) is disposed on the second side; the first side surface is arranged opposite to the second side surface.
7. An apparatus for battery pack cooling as claimed in claim 5, wherein: the temperature sensing structure (4) is used for monitoring the temperature of the battery pack assembly (2).
8. An apparatus for battery pack cooling as claimed in claim 7, wherein: the battery pack assembly is characterized by further comprising a battery management structure (6) which is electrically connected with the battery pack assembly (2), the temperature sensing structure (4) and the active heat dissipation device (3) at the same time.
9. An apparatus for battery pack cooling as claimed in claim 2, wherein: the active heat dissipation device (3) further comprises a heat conduction structure (5) connected with the battery pack assembly (2).
10. An apparatus for battery pack cooling as claimed in claim 2, wherein: the active heat dissipation piece (32) is an air cooling structural piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123033131.4U CN216903100U (en) | 2021-12-03 | 2021-12-03 | Device for cooling battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123033131.4U CN216903100U (en) | 2021-12-03 | 2021-12-03 | Device for cooling battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216903100U true CN216903100U (en) | 2022-07-05 |
Family
ID=82204403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123033131.4U Active CN216903100U (en) | 2021-12-03 | 2021-12-03 | Device for cooling battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216903100U (en) |
-
2021
- 2021-12-03 CN CN202123033131.4U patent/CN216903100U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4960373B2 (en) | Heat dissipating device for battery pack and battery pack using the same | |
| JP2020177910A (en) | Battery system | |
| CN216145746U (en) | Battery pack circuit breaking unit device and battery pack | |
| CN216903100U (en) | Device for cooling battery pack | |
| CN214043778U (en) | Immersion type liquid cooling battery module with integrated liquid cooling board | |
| CN211719732U (en) | Battery distribution box and battery pack | |
| CN219478428U (en) | Water-cooling heat dissipation structure for intelligent cabin host | |
| CN110518163B (en) | Battery module | |
| CN114335796A (en) | Device and method for cooling battery pack | |
| CN111224034A (en) | Square cell power battery pack | |
| CN217485566U (en) | Battery box and battery pack | |
| CN217283820U (en) | Power supply with air cooling and liquid cooling device | |
| CN208352490U (en) | A kind of integrated water-cooling lithium battery | |
| CN211184754U (en) | External heat dissipation control system | |
| CN204928300U (en) | Balanced cooling system of lithium cell | |
| CN210429910U (en) | Battery box structure | |
| CN211929549U (en) | Battery module and battery box with liquid cooling device | |
| CN219265528U (en) | Temperature acquisition module | |
| CN208315709U (en) | Take into account air-cooled and liquid cooling power battery coldplate | |
| CN218353010U (en) | BDU controller with liquid cooling function | |
| CN213459995U (en) | Conductive heat dissipation structure suitable for multi-core-pack | |
| CN218004986U (en) | Battery management system assembly, energy storage device thereof and energy storage device control system | |
| CN220410477U (en) | Mounting bracket, electric control device, battery pack and vehicle | |
| CN219552617U (en) | UPS storage battery internal resistance monitor | |
| CN213125824U (en) | Mounting structure of module power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |