CN209266038U - A kind of air cooling cable and air cooling cable unit for charging pile - Google Patents
A kind of air cooling cable and air cooling cable unit for charging pile Download PDFInfo
- Publication number
- CN209266038U CN209266038U CN201920289464.7U CN201920289464U CN209266038U CN 209266038 U CN209266038 U CN 209266038U CN 201920289464 U CN201920289464 U CN 201920289464U CN 209266038 U CN209266038 U CN 209266038U
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- Prior art keywords
- power line
- air cooling
- charging pile
- binding post
- cable
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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
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model discloses a kind of air cooling cable for charging pile and air cooling cable units, it is related to field of cable technology, wherein air cooling cable includes power line, power line includes the stranded conductor set gradually from inside to outside, insulating bag belt, braiding layer and insulating layer, stranded conductor is made by twisting by copper wire, is provided in stranded conductor and is known a little about tracheae and several breeder tubes；Air cooling cable unit includes the air cooling cable, power line binding post and power line connecting terminal for charging pile, power line binding post and power line connecting terminal are connect with the both ends of power line respectively, and to know a little about tracheae and be connected into cooling circuit with several breeder tubes.This is used for the air cooling cable of charging pile and air cooling cable unit, the cooling that cable can be realized by cooling gas has prevented the danger such as the short circuit that cooling duct leakage occurs, has eliminated security risk, it is provided with cooling circuit in single power line simultaneously, cooling cooling effect is be more good.
Description
Technical field
The utility model relates to field of cable technology, specially a kind of air cooling cable and air cooling cable dress for charging pile
It sets.
Background technique
With popularizing for new-energy automobile, the requirement for charging pile is also higher and higher.Currently, user uses exchanging trickle charge
Stake is typically filled with electricity and needs 6-8 hours or so, and fast charge stake is fully charged also at least needs 2 hours or so.It is filled to further decrease
The charging time of electric stake, in recent years, external vehicle enterprise all start to be laid out high-power charging pile one after another.However, to realize high-power straight
Current charge needs to be promoted in terms of voltage and current two, thus can propose new requirement to the design of charging pile, and
The cooling of cable and charging pile is also consideration factor indispensable when designing charging pile.
By taking the promotion in terms of electric current as an example, it is assumed that promoted from 250A to 350A even 500A, when use will generate more
Heat, for the safe operation for guaranteeing cable, needed using more thick cable, this will be very big if not increasing cooling provision
Influence charge experience.Moreover, the energy of transmission per unit of time will increase, temperature rise when using high-power charging
It by by more growth, is charged with 350kW, for electrical efficiency is 95%, heating power is 350kW × 5%=17.5kW, is such as radiated
It is unsmooth, it is likely to result in big safety accident, this just needs to increase in entire circuit design more temperature detections and satisfies
Ensure that using safe, this will greatly increase its cost with measure.Therefore, for above situation, preferred solution is still
It is so to select the cable with refrigerating function, it is convenient that the equipment such as cable and charging gun are cooled down.
Cooling cable in the prior art is usually that unidirectional cooling duct is arranged inside cable, is carried out by coolant liquid cold
But.The cooling cable of this mode, cooling cooling effect is bad, while coolant liquid the danger such as short circuit will occur once leakage occurs
Danger, there are great security risks.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of air cooling cable for charging pile and
Be gas-cooled cable unit, and the cooling of cable can be realized by cooling gas, has prevented the short circuit etc. that cooling duct leakage occurs
Danger eliminates security risk, while being provided with cooling circuit in single power line, and cooling cooling effect is be more good.
The purpose of this utility model is achieved through the following technical solutions:
A kind of air cooling cable for charging pile, including power line, the power line include setting gradually from inside to outside
Stranded conductor, insulating bag belt, braiding layer and insulating layer, the twisted system of copper wire of the stranded conductor by diameter no more than 0.5mm
At, it is provided in the stranded conductor and knows a little about tracheae and several breeder tubes, it is described to know a little about tracheae and be set to the stranded conductor
Shaft core position, the breeder tube be uniformly arranged in close to the stranded conductor marginal position.
Further, described to know a little about tracheae and breeder tube and copper material is selected to be made, it is described to know a little about tracheae and thin ventilation
Rolling has annular lines on the pipe shaft of pipe.
Further, the braiding layer selects aramid yarn braiding to be made, and count is greater than 95%.
Further, the power line is arranged in pairs, and further includes restrictive coating, belting layer, ground line, a pair of control line and one
To communication line, the control line, power line, communication line and ground line are all set in the belting layer, the restrictive coating socket
In outside the belting layer.
A kind of air cooling cable unit for charging pile, it is described including CA cable assembly and for the air cooling cable of charging pile
CA cable assembly includes power line binding post and power line connecting terminal, and the power line binding post and power line connecting terminal are distinguished
It is connect with the both ends of the power line, the power line binding post described know a little about tracheae and be connected with several breeder tubes for making
Logical, the power line connecting terminal described knows a little about tracheae and several breeder tubes are in communication with the outside for making.
Further, the power line binding post closed at one end, another end opening, in the power line binding post from
Its open end is inwardly disposed with installation cavity a, inverting chamber a and binding post cavity, is provided with closure gasket groove in the installation cavity
A, the binding post cavity are provided with ventilation cone a close to one end of the inverting chamber a, and the other end of the ventilation cone a is set to
In the installation cavity a, circulation groove is additionally provided in the power line binding post, the inverting chamber a and the binding post cavity are logical
Cross the circulation groove connection；
One end insertion of the power line is set in the installation cavity a, and the end of stranded conductor is set to the friendship
It changes in chamber a, the end for knowing a little about tracheae is socketed on the conical surface of the ventilation cone a, is provided with sealing in the closure gasket groove a
Circle.
Further, the power line connecting terminal closed at one end, another end opening, the power line connecting terminal
It is interior to be inwardly disposed with installation cavity b, inverting chamber b and connecting terminal cavity from its open end, it is provided in the installation cavity b close
Seal ring slot b, the binding post cavity b are provided with ventilation cone b, the other end of the ventilation cone b close to one end of the inverting chamber b
It is set in the installation cavity b, air inlet and venthole is additionally provided on the power line connecting terminal, the air inlet is used for
Inverting chamber b is set to be in communication with the outside, the venthole is for making the inverting chamber b be in communication with the outside；
One end insertion of the power line is set in the installation cavity b, and the end of stranded conductor is set to the friendship
It changes in chamber b, the end for knowing a little about tracheae is socketed on the conical surface of the ventilation cone b, is provided with sealing in the closure gasket groove b
Circle.
The beneficial effects of the utility model are:
It is provided with cooling duct in power line in the cable as main pyrotoxin, being passed through cooling gas can be directly to electricity
The line of force is cooled down, and the heat dissipation to cable is enhanced.Above-mentioned cooling duct is made of copper pipe, on the one hand leading because of copper material
Hot property is good, can be very good to carry out heat transfer, more preferable to the cooling of power line；Another aspect copper material itself has well
Electric conductivity, can directly participate in conduction.There is annular lines with rolling on copper pipe pipe shaft cooling, allows to carry out appropriate
Bending, meets requirement of the cable to bending property.Aramid yarn braiding layer is provided in power line, it can will be suffered by power line
Power is transferred to aramid fiber sand braiding layer and is absorbed, and is conducive to the internal structure for maintaining power line, guarantees its internal cooling duct
It is unimpeded.
The binding post and connecting terminal of special entity is arranged in the cable unit, the power line both ends in the cable respectively with connect
After terminal is connected with connecting terminal, so that the cooling duct inside power line forms cooling circuit, cooling gas is in single electricity
By flowing back and forth in the line of force, heat exchanging process twice is generated, compared to traditional cooling construction of cable, radiating efficiency is more
Height, cooling efficiency are more preferable.
Detailed description of the invention
Fig. 1 is a kind of section structure diagram of the air cooling cable for charging pile of the utility model；
Fig. 2 is the structural schematic diagram of power line；
Fig. 3 is the structural schematic diagram of power line binding post；
Fig. 4 is the structural schematic diagram of power line connecting terminal.
Specific embodiment
The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing
It is not limited to as described below.
As shown in Figure 1, a kind of air cooling cable for charging pile, including restrictive coating 1, belting layer 2, ground line 6, Yi Dui electricity
The line of force 4, a pair of control line 3 and a pair of of communication line 5.Wherein control line 3, power line 4, communication line 5 and ground line 6 are all set in packet
In belt 2, restrictive coating 1 is socketed on outside belting layer 2.
As shown in Fig. 2, power line 4 includes the stranded conductor 404 set gradually from inside to outside, insulating bag belt 403, braiding
Layer 402 and insulating layer 401.It is provided in stranded conductor 404 and knows a little about tracheae 406 and several breeder tubes 405, know a little about tracheae 406
It is set to the shaft core position of stranded conductor 404, breeder tube 405 is uniformly arranged in the marginal position close to stranded conductor 404.It is logical
It crosses and is passed through cooling gas in tracheae 406 and breeder tube 405, it can be achieved that cooling to power line to knowing a little about.
When it is implemented, copper wire of the stranded conductor 404 by diameter no more than 0.5mm is made by twisting.Know a little about tracheae 406 and thin
Snorkel 405 selects copper material to be made, and on the one hand because the heating conduction of copper material is good, can be very good to carry out heat transfer,
Power line 4 is cooled down；Another aspect copper material itself has good electric conductivity, can join together with stranded conductor 404
With conduction.Rolling has annular lines on the pipe shaft for knowing a little about tracheae 406 and breeder tube 405, allows to carry out appropriate
Bending, meets requirement of the cable to bending property.
Further, braiding layer 402 selects aramid yarn braiding to be made, and count is greater than 95%.When it is implemented, choosing
It is worked out with Dtex8050 aramid yarn, the material density is small, and stretch modulus is high, and breaking strength is higher, fracture elongation is lower,
Especially at a higher temperature, it is already able to maintain its inherent characteristic, is worked out using aramid yarn, it can will be suffered by power line
Power be transferred to aramid fiber sand braiding layer and absorbed, be conducive to the internal structure for maintaining power line, guarantee that its internal cooling is logical
Road is unimpeded.
A kind of air cooling cable unit for charging pile, including CA cable assembly and above-mentioned air cooling cable.Wherein, CA cable assembly
Including power line binding post and power line connecting terminal, power line binding post and power line connecting terminal respectively with power line 4
Both ends connection, power line binding post are connected for making to know a little about tracheae 406 with several breeder tubes 405, power line connecting terminal
For making to know a little about tracheae 406 and several breeder tubes 405 are in communication with the outside.Using the air cooling cable unit to charging pile into
When row is cooling, external cooling gas at connecting terminal, cooling gas successively pass through connecting terminal, know a little about tracheae 406, binding post,
It is discharged outside power line after breeder tube 405 by connecting terminal, in the above process, cooling gas is in single power line by back and forth
Flowing, in fact with generation heat exchange twice inside power line, compared to traditional cooling construction of cable, radiating efficiency is more
Height, cooling efficiency are more preferable.
As shown in figure 3, power line binding post is closed at one end, another end opening, power line binding post is interior to be open from it
End is inwardly disposed with installation cavity a, inverting chamber a102 and binding post cavity 105, is provided with closure gasket groove a101 in installation cavity,
Binding post cavity 105 is provided with ventilation cone a103 close to one end of inverting chamber a102, and the other end of ventilation cone a103 is set to peace
It behave affectedly in a, circulation groove 104 is additionally provided in power line binding post, inverting chamber a102 and binding post cavity 105 pass through circulation groove
104 connections.
As shown in figure 4, power line connecting terminal is closed at one end, another end opening, from it in power line connecting terminal
Open end is inwardly disposed with installation cavity b, inverting chamber b and connecting terminal cavity, is provided with closure gasket groove in installation cavity b
B201, binding post cavity b are provided with ventilation cone b203 close to one end of inverting chamber b, and the other end of ventilation cone b203 is set to peace
It behave affectedly in b, air inlet 204 and venthole 202 is additionally provided on power line connecting terminal, air inlet 204 is for making connecting terminal
Cavity is in communication with the outside, and venthole 202 is for making inverting chamber b be in communication with the outside.
When it is implemented, one end insertion of power line 4 is set in installation cavity a, the end of stranded conductor 404 is set to
In inverting chamber a102, the end of breeder tube 405 is connected to inverting chamber a102, know a little about tracheae 406 end be socketed in it is logical
On the conical surface of gas coning a103, so that blister copper pipe 406 is connected to binding post cavity 105 and completely cuts off with inverting chamber a102；Power line 4
Other end insertion is set in installation cavity b, and the end of stranded conductor 404 is set in inverting chamber b, breeder tube 405
End is connected to inverting chamber b, and the end for knowing a little about tracheae 406 is socketed on the conical surface of ventilation cone b203, so that making blister copper pipe
406 are connected to connecting terminal cavity and completely cut off with inverting chamber b.When being cooled down, cooling gas is entered by air inlet 204, according to
It is secondary to flow through connecting terminal cavity, know a little about tracheae 406, binding post cavity 105, circulation groove 104, inverting chamber a102, several thin ventilations
It is discharged after pipe 405, inverting chamber b through venthole 202.It is provided with sealing ring in closure gasket groove a101 and closure gasket groove b201,
So that power line 4 and binding post and the formation sealed connection between connecting terminal, effectively prevent cooling gas to escape, improve cold
But the utilization rate of gas guarantees cooling effect.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (7)
1. a kind of air cooling cable for charging pile, which is characterized in that including power line (4), the power line (4) includes by interior
Stranded conductor (404), insulating bag belt (403), braiding layer (402) and the insulating layer (401) set gradually outward, it is described twisted
Copper wire of the conductor (404) by diameter no more than 0.5mm is made by twisting, and is provided in the stranded conductor (404) and is known a little about tracheae
(406) and several breeder tubes (405), the shaft core position known a little about tracheae (406) and be set to the stranded conductor (404),
The breeder tube (405) is uniformly arranged in the marginal position close to the stranded conductor (404).
2. a kind of air cooling cable for charging pile according to claim 1, which is characterized in that described to know a little about tracheae
(406) and breeder tube (405) selects copper material to be made, on the pipe shaft for knowing a little about tracheae (406) and breeder tube (405)
Rolling has annular lines.
3. a kind of air cooling cable for charging pile according to claim 1, which is characterized in that the braiding layer (402)
Aramid yarn braiding is selected to be made, count is greater than 95%.
4. a kind of air cooling cable for charging pile according to claim 1, it is characterised in that the power line (4) is pairs of
Setting further includes restrictive coating (1), belting layer (2), ground line (6), a pair of control line (3) and a pair of of communication line (5), the control
Line (3), power line (4), communication line (5) and ground line (6) processed are all set in the belting layer (2), restrictive coating (1) set
It is connected to the belting layer (2) outside.
5. a kind of air cooling cable unit for charging pile, which is characterized in that appoint including CA cable assembly and such as Claims 1-4
A kind of air cooling cable for charging pile described in meaning one, the CA cable assembly includes power line binding post and power line wiring
Terminal, the power line binding post and power line connecting terminal are connect with the both ends of the power line (4) respectively, the power line
Binding post for make it is described know a little about tracheae (406) and be connected with several breeder tubes (405), the power line connecting terminal is used for
Tracheae (406) is known a little about described in making and several breeder tubes (405) are in communication with the outside.
6. a kind of air cooling cable unit for charging pile according to claim 5, which is characterized in that the power line connects
Closed at one end, another end opening of terminal, the power line binding post is interior to be inwardly disposed with installation cavity from its open end
A, inverting chamber a(102) and binding post cavity (105), closure gasket groove a(101 is provided in the installation cavity), the binding post is empty
Chamber (105) is close to the inverting chamber a(102) one end be provided with ventilation cone a(103), the ventilation cone a(103) the other end
It is set in the installation cavity a, circulation groove (104), the inverting chamber a(102 is additionally provided in the power line binding post) with
The binding post cavity (105) is connected to by the circulation groove (104)；
One end insertion of the power line (4) is set in the installation cavity a, and the end of stranded conductor (404) is set to institute
State inverting chamber a(102) in, the end for knowing a little about tracheae (406) is socketed in the ventilation cone a(103) the conical surface on, the sealing
Annular groove a(101) in be provided with sealing ring.
7. a kind of air cooling cable unit for charging pile according to claim 5, which is characterized in that the power line connects
Closed at one end, another end opening of line terminals, the power line connecting terminal is interior to be inwardly disposed with peace from its open end
It behave affectedly b, inverting chamber b and connecting terminal cavity, is provided with closure gasket groove b(201 in the installation cavity b), the binding post cavity b
One end of the inverting chamber b is provided with ventilation cone b(203), the ventilation cone b(203) the other end be set to the peace
It behave affectedly in b, air inlet (204) and venthole (202), the air inlet (204) is additionally provided on the power line connecting terminal
For making inverting chamber b be in communication with the outside, the venthole (202) is for making the inverting chamber b be in communication with the outside；
One end insertion of the power line (4) is set in the installation cavity b, and the end of stranded conductor (404) is set to institute
State in inverting chamber b, the end for knowing a little about tracheae (406) is socketed in the ventilation cone b(203) the conical surface on, the closure gasket groove b
(201) sealing ring is provided in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920289464.7U CN209266038U (en) | 2019-03-07 | 2019-03-07 | A kind of air cooling cable and air cooling cable unit for charging pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920289464.7U CN209266038U (en) | 2019-03-07 | 2019-03-07 | A kind of air cooling cable and air cooling cable unit for charging pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209266038U true CN209266038U (en) | 2019-08-16 |
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ID=67585555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920289464.7U Active CN209266038U (en) | 2019-03-07 | 2019-03-07 | A kind of air cooling cable and air cooling cable unit for charging pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209266038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754895A (en) * | 2019-03-07 | 2019-05-14 | 成都宇坤健元新能源科技有限公司 | A kind of air cooling cable and air cooling cable unit for charging pile |
-
2019
- 2019-03-07 CN CN201920289464.7U patent/CN209266038U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754895A (en) * | 2019-03-07 | 2019-05-14 | 成都宇坤健元新能源科技有限公司 | A kind of air cooling cable and air cooling cable unit for charging pile |
| CN109754895B (en) * | 2019-03-07 | 2024-04-30 | 成都艾默泰克科技有限公司 | Air-cooled cable and air-cooled cable device for charging pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 603, 6 / F, unit 2, building 6, No. 166, Wuxing 4th Road, Wuhou New Town Management Committee, Wuhou District, Chengdu, Sichuan 610000 Patentee after: CHENGDU YUKUN JIANYUAN NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee after: Sichuan Shudao Equipment Technology Co.,Ltd. Address before: Room 603, 6 / F, unit 2, building 6, No. 166, Wuxing 4th Road, Wuhou New Town Management Committee, Wuhou District, Chengdu, Sichuan 610000 Patentee before: CHENGDU YUKUN JIANYUAN NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: CHENGDU SHENLENG LIQUEFACTION PLANT Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220714 Address after: 611730 No. 569, tongshanqiao Road, north area of modern industrial port, Pidu District, Chengdu, Sichuan Province Patentee after: Sichuan Shudao Equipment Technology Co.,Ltd. Address before: Room 603, 6 / F, unit 2, building 6, No. 166, Wuxing 4th Road, Wuhou New Town Management Committee, Wuhou District, Chengdu, Sichuan 610000 Patentee before: CHENGDU YUKUN JIANYUAN NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: Sichuan Shudao Equipment Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |