CN216055075U - Charging seat and vehicle - Google Patents
Charging seat and vehicle Download PDFInfo
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- CN216055075U CN216055075U CN202121773503.4U CN202121773503U CN216055075U CN 216055075 U CN216055075 U CN 216055075U CN 202121773503 U CN202121773503 U CN 202121773503U CN 216055075 U CN216055075 U CN 216055075U
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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 relates to a charging seat and a vehicle, wherein the charging seat comprises a charging seat shell, an anode terminal and a cathode terminal, an anode copper bar and a cathode copper bar, wherein the anode terminal and the cathode terminal are arranged in the charging seat shell, the tail end of the anode terminal and the tail end of the cathode terminal are exposed out of the charging seat shell, the charging seat shell is used for being fixed on a box body of a distribution box or an electric cabinet in a sealing mode, and the tail end of the cathode terminal is used for being fixedly connected with the cathode copper bar of the distribution box or the electric cabinet. In the charging stand, the resistance of the joint of the positive terminal and the positive copper bar of the distribution box or the electric cabinet and the joint of the negative terminal and the negative copper bar of the distribution box or the electric cabinet are about 0.04m omega, which is 1/5 of the connection mode in the prior art. The heating value is very little when the heavy current is charged, and the performance and the service life of the charging seat are greatly improved.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a charging seat and a vehicle.
Background
With the popularization and the continuous development of new energy vehicles, people have more and more great requirements on charging of the new energy vehicles, and potential safety hazards are higher and higher. The charging seat is installed on electric automobile, and when current charging seat and power supply end were connected and are charged, need peg graft the rifle head that charges of power supply end in the interface that charges of charging seat of new energy automobile. At the moment, the terminal in the charging gun head of the power supply end is connected with the butt joint terminal of the charging seat of the new energy automobile to generate heat during charging, the heat can cause the temperature of the terminal of the charging seat to rise, and potential safety hazards exist during charging.
The tail terminal of the existing charging seat is connected with a high-voltage cable by adopting hexagonal crimping, the connecting resistance of the connecting mode is about 0.2m omega, and when a large current is charged, the connecting part of the tail terminal of the charging seat and the high-voltage cable generates heat and is easy to generate an over-temperature phenomenon, so that the performance and the service life of the charging seat are seriously influenced.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the charging seat and the vehicle are provided aiming at the problem that the connection part of the tail terminal of the charging seat and the high-voltage cable of the existing charging seat generates heat and is easy to generate over-temperature phenomenon.
In order to solve the technical problem, in one aspect, an embodiment of the present invention provides a charging seat, including a charging seat casing, an anode terminal and a cathode terminal, where the anode terminal and the cathode terminal are installed in the charging seat casing, a tail end of the anode terminal and a tail end of the cathode terminal are exposed out of the charging seat casing, the charging seat casing is used to be hermetically fixed on a box body of a distribution box or an electric cabinet, the tail end of the anode terminal is used to be fixedly connected with an anode copper bar of the distribution box or the electric cabinet, and the tail end of the cathode terminal is used to be fixedly connected with a cathode copper bar of the distribution box or the electric cabinet.
Optionally, the positive terminal comprises a positive interface column and a positive connection block connected to the inner end of the positive interface column, and the upper surface of the positive connection block is a flat surface and is used for being attached to the positive copper bar;
the negative terminal comprises a negative interface column and a negative connecting block connected to the inner end of the negative interface column, and the upper surface of the negative connecting block is a flat surface and is used for being attached to a negative copper bar.
Optionally, the positive electrode connecting block and the negative electrode connecting block are exposed.
Optionally, the positive electrode interface column and the negative electrode interface column are hollow cylinders, and the positive electrode connecting block and the negative electrode connecting block are square blocks;
the cross-sectional area of the positive connecting block is larger than that of the positive interface column, and the cross-sectional area of the negative connecting block is larger than that of the negative interface column.
According to the charging seat provided by the embodiment of the utility model, the tail end of the positive terminal is fixedly connected with the positive copper bar of the distribution box or the electric cabinet, and the tail end of the negative terminal is used for being fixedly connected with the negative copper bar of the distribution box or the electric cabinet. The resistance of the joint of the positive terminal and the positive copper bar of the distribution box or the electric cabinet and the joint of the negative terminal and the negative copper bar of the distribution box or the electric cabinet is about 0.04m omega, which is 1/5 of the connection mode in the prior art. The heating value is very little when the heavy current is charged, and the performance and the service life of the charging seat are greatly improved.
On the other hand, the embodiment of the utility model provides a vehicle which comprises a distribution box, an electric cabinet and the charging seat, wherein the shell of the charging seat is hermetically fixed on the box body of the distribution box or the electric cabinet, the tail end of the positive terminal is fixedly connected with a positive copper bar of the distribution box or the electric cabinet, and the tail end of the negative terminal is fixedly connected with a negative copper bar of the distribution box or the electric cabinet.
The positive terminal comprises a positive interface column and a positive connecting block connected to the inner end of the positive interface column, the upper surface of the positive connecting block is a flat surface, and the positive copper bar is attached to the upper surface of the positive connecting block;
the negative terminal comprises a negative interface column and a negative connecting block connected to the inner end of the negative interface column, the upper surface of the negative connecting block is a flat surface, and the negative copper bar is attached to the upper surface of the negative connecting block.
Optionally, two first screw holes which are diagonally arranged are formed in the positive connecting block, two first through holes which are diagonally arranged are correspondingly formed in the positive copper bar, and the positive copper bar is attached and fixed to the upper surface of the positive connecting block through two first screws which respectively penetrate through the two first through holes and are screwed in the two first screw holes;
be provided with two second screw holes that are the diagonal angle and arrange on the negative connecting block, it is provided with two second through-holes that are the diagonal angle and arrange to correspond on the negative copper bar, the negative copper bar is through passing two respectively the second through-hole is screwed in two second screw laminating of two second screw holes and is fixed the upper surface of negative connecting block.
Optionally, the positive copper bar is L-shaped, the positive copper bar includes a positive first copper bar extending in a direction perpendicular to the insertion direction of the charging gun and a positive second copper bar extending in the insertion direction of the charging gun, the positive first copper bar is attached to and fixed on the upper surface of the positive connecting block, and the positive second copper bar is connected with a positive bus bar of the distribution box or the electric cabinet;
the negative pole copper bar includes the first copper bar of negative pole that the rifle insertion direction of charging of perpendicular to extends and follows the negative pole second copper bar that the rifle insertion direction of charging extends, the laminating of the first copper bar of negative pole is fixed the upper surface of negative pole connecting block, negative pole second copper bar is connected with the negative pole generating line of block terminal or electric cabinet.
Optionally, the first positive copper bar and the first negative copper bar are located on the same straight line, the second positive copper bar is connected to the first positive copper bar at one end of the positive terminal, and the second negative copper bar is connected to the first negative copper bar at one end of the negative terminal.
Optionally, the positive copper bar completely covers the upper surface of the positive connecting block, and the negative copper bar completely covers the upper surface of the negative connecting block.
The vehicle of the present application has all the advantages of the charging dock described above.
Drawings
FIG. 1 is a side view of a charging dock according to one embodiment of the present invention;
fig. 2 is a perspective view of a charging stand according to an embodiment of the present invention;
FIG. 3 is an exploded view of a charging cradle according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a positive terminal of a charging stand according to an embodiment of the utility model;
fig. 5 is a schematic diagram of a negative terminal of a charging stand according to an embodiment of the utility model.
The reference numerals in the specification are as follows:
1. a charging seat shell; 11. a charging stand main body; 12. a charging seat flange; 2. a positive terminal; 21. a positive interface post; 22. a positive connecting block; 3. a negative terminal; 31. a negative interface post; 32. a negative electrode connecting block; 4. a positive copper bar; 41. a positive first copper bar; 42. a positive second copper bar; 5. a negative copper bar; 51. a first copper bar of negative electrode; 52. a second copper bar of the negative electrode; 6. a first screw; 7. a second screw; 8. and (5) sealing rings.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects 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.
The vehicle provided by the embodiment of the utility model comprises a distribution box, an electric cabinet and a charging seat. The vehicle can be a pure electric vehicle or a hybrid vehicle and the like which need to be externally charged.
Referring to fig. 1 to 5, the charging seat provided in the embodiment of the present invention includes a charging seat housing 1, an anode terminal 2 and a cathode terminal 3, where the anode terminal 2 and the cathode terminal 3 are installed in the charging seat housing 1, a tail end (inner end) of the anode terminal 2 and a tail end (inner end) of the cathode terminal 3 are exposed out of the charging seat housing 1, the charging seat housing 1 is used to be hermetically fixed on a box body of a distribution box or an electric cabinet, the tail end of the anode terminal 2 is used to be fixedly connected with an anode copper bar 4 of the distribution box or the electric cabinet, and the tail end of the cathode terminal 3 is used to be fixedly connected with a cathode copper bar 5 of the distribution box or the electric cabinet.
The positive copper bar 4 and the negative copper bar 5 are part of a distribution box or an electric cabinet. For example, when corresponding to the distribution box, the positive electrode copper bar 4 is connected to the positive electrode bus bar of the distribution box, and the negative electrode copper bar 5 is connected to the negative electrode bus bar of the distribution box. When the electric cabinet corresponds to the electric cabinet, the positive copper bar 4 is connected with a positive bus of the electric cabinet, and the negative copper bar 5 is connected with a negative bus of the electric cabinet.
In an embodiment, the positive terminal 2 includes a positive electrode connecting post 21 and a positive electrode connecting block 22 connected to an inner end of the positive electrode connecting post 21, and an upper surface of the positive electrode connecting block 22 is a flat surface for being attached to the positive electrode copper bar 4. The upper surface of the positive connecting block 22 is a flat surface, and when the positive connecting block is connected with the positive copper bar 4, no gap exists, and the resistance of the connecting position is small.
In an embodiment, the negative terminal 3 includes a negative interface column 31 and a negative connection block 32 connected to an inner end of the negative interface column 31, and an upper surface of the negative connection block 32 is a flat surface for being attached to the negative copper bar. The upper surface of the negative electrode connecting block 32 is a flat surface, and when the negative electrode connecting block is connected with the negative electrode copper bar 5, no gap exists, and the resistance of the connecting position is small.
In an embodiment, be provided with two first screw holes that are diagonal arrangement on the anodal connecting block 22, be provided with two first through-holes that are diagonal arrangement on the anodal copper bar 4, anodal copper bar 4 is fixed through passing two respectively first through-hole is screwed in two first screw 6 laminating of two first screw holes the upper surface of anodal connecting block 22. First screw 6 and first screw hole are provided with two, and are the diagonal angle setting, can prevent like this that anodal copper bar 4 from rotating, have increased the reliability of being connected of anodal terminal 2 and anodal copper bar 4. Moreover, if one first screw hole is adopted, the first screw hole on the positive connection block 22 needs to be set to be larger, which results in that the heat dissipation and overcurrent capacity of the positive terminal 2 are weakened. In this embodiment, two first screw holes with smaller sizes may be used, which is beneficial to improving the heat dissipation and overcurrent capacity of the positive terminal 2.
In an embodiment, be provided with two second screw holes that are diagonal arrangement on the negative pole connecting block 32, the correspondence is provided with two second through-holes that are diagonal arrangement on the negative pole copper bar 5, the negative pole copper bar 5 is fixed through passing two respectively the second through-hole is screwed in two second screw 7 laminating of two second screw holes the upper surface of negative pole connecting block 32. Second screw 7 and second screw hole are provided with two, and are the diagonal angle setting, can prevent like this that negative pole copper bar 5 from rotating, have increased negative terminal 3 and anodal copper bar 5's connection reliability. Moreover, if a second screw hole is adopted, the second screw hole on the negative electrode connecting block 22 needs to be set to be larger, which results in the reduction of the heat dissipation and overcurrent capability of the negative electrode terminal 3. In this embodiment, two second screw holes with smaller sizes may be used, which is beneficial to improving the heat dissipation and overcurrent capacity of the negative terminal 3.
The positive terminal 2 and the positive copper bar 4 are fixed in a compression joint mode, the negative terminal 3 and the negative copper bar 5 are fixed in a compression joint mode, the connecting resistance is extremely low, the overcurrent capacity is remarkably improved, the structure is simple and reliable, and the after-sale maintenance cost is low.
Referring to fig. 4 and 5, the positive electrode connecting column 21 and the negative electrode connecting column 31 are hollow cylinders (for connecting with a charging gun), and the positive electrode connecting block 22 and the negative electrode connecting block 32 are square blocks (in other words, the positive electrode connecting block 22 and the negative electrode connecting block 32 are solid bodies).
In an embodiment, the positive connecting block 22 (the connecting portion between the positive terminal 2 and the positive copper bar 4) and the negative connecting block 32 (the connecting portion between the negative terminal 3 and the negative copper bar 5) are exposed (not sealed), so that the heat dissipation capability of the connecting point after heating is greatly improved, and the overcurrent capability and the service life of the charging stand can be effectively improved.
In one embodiment, the connection portion of the positive copper bar 4 and the positive terminal 2 and the connection portion of the negative copper bar 5 and the negative terminal 3 are exposed (no seal is provided). Therefore, the air cooling device and the liquid cooling device can be simply added to realize the cooling of the charging seat, and the overcurrent capacity (about 500A) and the service life of the charging seat are greatly improved.
In an embodiment, the positive copper bar 4 is L-shaped, the positive copper bar 4 includes a positive first copper bar 41 extending along a direction perpendicular to the insertion direction of the charging gun and a positive second copper bar 42 extending along the insertion direction of the charging gun, the positive first copper bar 41 is attached and fixed to the upper surface of the positive connecting block 22, and the positive second copper bar 42 is connected to the positive bus bar of the distribution box or the electric cabinet.
In an embodiment, the negative electrode copper bar 5 is L-shaped, the negative electrode copper bar 5 includes a negative electrode first copper bar 51 extending along a direction perpendicular to the insertion direction of the charging gun and a negative electrode second copper bar 52 extending along the direction of the insertion direction of the charging gun, the negative electrode first copper bar 51 is attached and fixed to the upper surface of the negative electrode connecting block 32, and the negative electrode second copper bar 52 is connected with the negative electrode bus bar of the distribution box or the electric cabinet.
In one embodiment, the positive copper bar 4 completely covers the upper surface of the positive connection block 22, and the negative copper bar 5 completely covers the upper surface of the negative connection block 32.
In one embodiment, the cross-sectional area of the positive connection block 22 (the cross-sectional area of the positive connection block 22, which refers to the cross-sectional area of the positive connection block 22 perpendicular to the central axis of the positive connection column 21) is greater than the cross-sectional area of the positive connection column 21 (the cross-sectional area of the positive connection column 21, which refers to the cross-sectional area of the positive connection column 21 perpendicular to its central axis), and the cross-sectional area of the negative connection block 32 (the cross-sectional area of the negative connection block 32, which refers to the cross-sectional area of the negative connection block 32 perpendicular to the central axis of the negative connection column 31) is greater than the cross-sectional area of the negative connection column 31 (the cross-sectional area of the negative connection column 31, which refers to the cross-sectional area of the negative connection column 31 perpendicular to its central axis). That is, the sectional areas of the ends of the positive electrode terminal 2 and the negative electrode terminal 3 are increased. Like this, be favorable to conducting anodal copper bar 4 and negative pole copper bar 5 with the heat that anodal terminal 2, negative terminal 3 produced from the hookup location with anodal copper bar 4 and negative pole copper bar 5, anodal copper bar 4 is big with the heat radiating area of negative pole copper bar 5, like this, can promote the charging seat ability of overflowing.
For example, in one embodiment, the cross-sectional area of the positive interface post 21 is 314mm2The cross-sectional area of the positive electrode connecting block 22 is 400mm, and the cross-sectional area of the negative electrode connecting post 31 is 314mm2The cross-sectional area of the negative electrode connecting piece 32 was 400mm, and the positive electrode terminal 2 and the negative electrode terminal were estimated based on the common knowledgeThe current-carrying capacity of 3 is 800-1200A, the connection resistance is extremely low, the over-current capacity of about 500A can be ensured, and the charging capacity of 250A cannot be exceeded in the prior art is completely broken through.
In an embodiment, the charging seat further includes a sealing ring 8, the charging seat housing 1 includes a charging seat main body 11 and a charging seat flange 12 connected to the periphery of the charging seat main body 11, the positive terminal 2 and the negative terminal 3 are installed in the charging seat main body 11, a portion of the charging seat main body 11 located inside the charging seat flange 12 is inserted into a box body of the distribution box or the electric cabinet, the sealing ring 8 is sleeved on the charging seat main body 11 and located inside the charging seat flange 12, and the sealing ring 8 is tightly pressed and assembled between an inner side surface of the charging seat flange 12 and an outer side surface of the box body of the distribution box or the electric cabinet.
Like this, the charging seat seal structure who is equivalent to this application only contains sealing washer 8, gives block terminal or electric cabinet completion with the complicacy of charging seat afterbody sealed, protection and fixed for the afterbody of the charging seat of this application need not set up other seal structure again, and simple structure is reliable, can save 8 complicated waterproof seal circle and afterbody plastic fixed knot structure, simplifies the structure and the reduce cost of charging seat greatly. And, block terminal or electric cabinet self protection level with fixed the charging seat that will be higher than now, therefore, the charging seat sealing performance of this application will be superior to the charging seat of prior art.
In addition, the charging seat of this application, sealing washer 8 can reach the protection level more than IP67 after block terminal or electric cabinet fastening, and waterproof rating is high, and is firm reliable.
In one embodiment, the sealing ring 8 is attached and fixed to the inner end surface of the charging seat flange 12. For example, the sealing ring 8 may be attached and fixed to the inner end surface of the charging-stand flange 12 by means of gluing, bolts, or the like.
Of course, in other alternatives, the sealing ring 8 may be fixed on the outer surface of the distribution box or the electric cabinet.
According to the charging stand and the vehicle provided by the embodiment of the utility model, the tail end of the positive terminal is fixedly connected with the positive copper bar of the distribution box or the electric cabinet, and the tail end of the negative terminal is used for being fixedly connected with the negative copper bar of the distribution box or the electric cabinet. The resistance of the joint of the positive terminal and the positive copper bar of the distribution box or the electric cabinet and the joint of the negative terminal and the negative copper bar of the distribution box or the electric cabinet is about 0.04m omega, which is 1/5 of the connection mode in the prior art. The heating value is very little when the heavy current is charged, and the performance and the service life of the charging seat are greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a charging seat, its characterized in that, includes charging seat casing, positive terminal and negative terminal are installed in the charging seat casing, the tail end of positive terminal and the tail end of negative terminal expose the charging seat casing, the charging seat casing is used for sealed the fixing on the box of block terminal or electric cabinet, the tail end of positive terminal is used for the anodal copper bar fixed connection with block terminal or electric cabinet, the tail end of negative terminal is used for the negative copper bar fixed connection with block terminal or electric cabinet.
2. The charging stand of claim 1, wherein the positive terminal comprises a positive interface column and a positive connecting block connected to the inner end of the positive interface column, and the upper surface of the positive connecting block is a flat surface for being attached to the positive copper bar;
the negative terminal comprises a negative interface column and a negative connecting block connected to the inner end of the negative interface column, and the upper surface of the negative connecting block is a flat surface and is used for being attached to a negative copper bar.
3. The charging stand of claim 2, wherein the positive connecting block and the negative connecting block are exposed.
4. The charging stand of claim 2, wherein the positive electrode interface column and the negative electrode interface column are hollow cylinders, and the positive electrode connecting block and the negative electrode connecting block are square blocks;
the cross-sectional area of the positive connecting block is larger than that of the positive interface column, and the cross-sectional area of the negative connecting block is larger than that of the negative interface column.
5. The vehicle is characterized by comprising a distribution box, an electric cabinet and the charging seat of claim 1, wherein the shell of the charging seat is hermetically fixed on the box body of the distribution box or the electric cabinet, the tail end of a positive terminal is fixedly connected with a positive copper bar of the distribution box or the electric cabinet, and the tail end of a negative terminal is fixedly connected with a negative copper bar of the distribution box or the electric cabinet.
6. The vehicle of claim 5, wherein the positive terminal comprises a positive interface column and a positive connection block connected to the inner end of the positive interface column, the upper surface of the positive connection block is a flat surface, and the positive copper bar is attached to the upper surface of the positive connection block;
the negative terminal comprises a negative interface column and a negative connecting block connected to the inner end of the negative interface column, the upper surface of the negative connecting block is a flat surface, and the negative copper bar is attached to the upper surface of the negative connecting block.
7. The vehicle according to claim 6, wherein two first screw holes are formed in the positive connecting block in a diagonal arrangement, two first through holes are correspondingly formed in the positive copper bar in a diagonal arrangement, and the positive copper bar is fixed to the upper surface of the positive connecting block in an attaching manner through two first screws which respectively penetrate through the two first through holes and are screwed in the two first screw holes;
be provided with two second screw holes that are the diagonal angle and arrange on the negative connecting block, it is provided with two second through-holes that are the diagonal angle and arrange to correspond on the negative copper bar, the negative copper bar is through passing two respectively the second through-hole is screwed in two second screw laminating of two second screw holes and is fixed the upper surface of negative connecting block.
8. The vehicle of claim 6, wherein the positive copper bar is L-shaped, the positive copper bar comprises a positive first copper bar extending in a direction perpendicular to an insertion direction of the charging gun and a positive second copper bar extending in the insertion direction of the charging gun, the positive first copper bar is attached and fixed to the upper surface of the positive connecting block, and the positive second copper bar is connected with a positive bus bar of the distribution box or the electric cabinet;
the negative pole copper bar includes the first copper bar of negative pole that the rifle insertion direction of charging of perpendicular to extends and follows the negative pole second copper bar that the rifle insertion direction of charging extends, the laminating of the first copper bar of negative pole is fixed the upper surface of negative pole connecting block, negative pole second copper bar is connected with the negative pole generating line of block terminal or electric cabinet.
9. The vehicle of claim 8, wherein the positive first copper bar and the negative first copper bar are collinear, the positive second copper bar is connected to an end of the positive first copper bar remote from the positive terminal, and the negative second copper bar is connected to an end of the negative first copper bar remote from the negative terminal.
10. The vehicle of claim 6, characterized in that the positive copper bars completely cover the upper surface of the positive connection block and the negative copper bars completely cover the upper surface of the negative connection block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121773503.4U CN216055075U (en) | 2021-07-30 | 2021-07-30 | Charging seat and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121773503.4U CN216055075U (en) | 2021-07-30 | 2021-07-30 | Charging seat and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216055075U true CN216055075U (en) | 2022-03-15 |
Family
ID=80618686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121773503.4U Active CN216055075U (en) | 2021-07-30 | 2021-07-30 | Charging seat and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216055075U (en) |
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2021
- 2021-07-30 CN CN202121773503.4U patent/CN216055075U/en active Active
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