CN213167633U - Integrated battery liquid cooling air conditioning unit - Google Patents
Integrated battery liquid cooling air conditioning unit Download PDFInfo
- Publication number
- CN213167633U CN213167633U CN202021429169.6U CN202021429169U CN213167633U CN 213167633 U CN213167633 U CN 213167633U CN 202021429169 U CN202021429169 U CN 202021429169U CN 213167633 U CN213167633 U CN 213167633U
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- conditioning unit
- battery liquid
- air conditioning
- heat exchanger
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 61
- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000009833 condensation Methods 0.000 claims abstract 2
- 230000005494 condensation Effects 0.000 claims abstract 2
- 238000001035 drying Methods 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 2
- 230000005520 electrodynamics Effects 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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
- 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
-
- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model relates to a vehicle air conditioner technical field, concretely relates to integrated form battery liquid cooling air conditioning unit, include air conditioner case and install the vehicle air conditioning unit at air conditioner incasement, the vehicle air conditioning unit includes compressor, condenser, condensation fan, dry reservoir and expansion valve, its characterized in that: the battery liquid cooling air conditioning unit further comprises a water pump, a water tank, a plate heat exchanger and a battery liquid cooling pump, wherein the water pump and the plate heat exchanger are arranged in the air conditioner case, and the water tank is arranged outside the air conditioner case. The integrated battery liquid cooling air conditioner for the electric vehicle is compact in structural layout, optimizes the layout of air conditioner pipelines, saves the materials of circuits and pipelines, and achieves the purposes of high efficiency, light weight and energy conservation of the system through the plate heat exchanger; the battery liquid-cooled pump is coupled with a compression refrigeration system of the air conditioner of the electric automobile to ensure that the cooling requirement of the battery pack is met under the high-temperature working condition.
Description
Technical Field
The utility model relates to an automobile air conditioner technical field, concretely relates to integrated form battery liquid cooling air conditioning unit.
Background
With the increasing importance of energy conservation and environmental protection in various countries, the electric driving of the traditional fuel oil vehicle becomes the mainstream direction of the automobile technology development. The power battery is one of three main cores of a new energy automobile and occupies a very important position. Thermal management of power battery systems can be divided into natural cooling, air cooling and liquid cooling. The natural cooling is obviously not suitable at present, the natural cooling heat dissipation is too slow, other parts in the unit are easily burnt out, a large amount of heat exchange is needed by the air-cooled heat dissipation type heat exchanger, and the exchanged heat can only be dissipated into the air in the unit, so that the temperature in the unit is directly increased.
Compare natural cooling and forced air cooling, the liquid cooling has very big advantage, lies in cooling or heating efficiency height on the one hand, can effective control battery temperature in suitable narrower scope, and on the other hand can guarantee that the difference in temperature of each electric core of battery system is little, extension battery life, the NVH problem that no forced air cooling leads to simultaneously.
The liquid cooling mode can also cause the adjustment of the overall layout in the air conditioner, so that the problem that the automobile air conditioning unit and the liquid cooling unit need to be solved under the condition of not changing the shape of the air conditioner external unit can be solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide an integrated battery liquid cooling air conditioning unit, which has compact structural layout, optimizes the layout of air conditioning pipelines, saves the materials of circuits and pipelines, and forms an integrated battery liquid cooling air conditioner for an electric vehicle, and the air conditioner realizes the purposes of high efficiency, light weight and energy conservation of the system through a plate heat exchanger; the battery liquid-cooled pump is coupled with a compression refrigeration system of the air conditioner of the electric automobile to ensure that the cooling requirement of the battery pack is met under the high-temperature working condition.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
an integrated battery liquid cooling air conditioning unit comprises an air conditioner case and an automobile air conditioning unit arranged in the air conditioner case, wherein the automobile air conditioning unit comprises a compressor, a condenser, a condensing fan, a drying liquid storage device and an expansion valve;
the air conditioner case is square, the condensing fan and the condenser are arranged on the front inner side wall close to the air conditioner case, the water pump and the compressor are designed into a whole, the water pump and the compressor are arranged close to the rear side of the condenser, the water outlet of the water pump is close to the water inlet of the condenser, and the water pump and the compressor are communicated by a water outlet pipe;
the water inlet of the compressor is communicated with the plate heat exchanger through a heat exchange pipe, the plate heat exchanger is positioned on the left rear side in the air conditioner case, and the heat exchange pipe of the plate heat exchanger sequentially bypasses the upper part of the drying liquid reservoir and the upper part of the expansion valve;
the drying liquid storage device and the expansion valve are positioned on a pipeline connecting path, one end of the drying liquid storage device is connected to the condenser through a first connecting pipe, the other end of the drying liquid storage device is connected to the expansion valve, the expansion valve is communicated into the plate type heat exchanger, the drying liquid storage device, the expansion valve and the plate type heat exchanger are communicated in an L-shaped direction, the drying liquid storage device is close to the condenser and positioned in the left front of the compressor, and the expansion valve is close to the plate type heat exchanger and positioned in the front of the plate;
the battery liquid cooling pump is arranged close to the right side of the plate type heat exchanger, a pump pipe connected to the battery liquid cooling pump is L-shaped and extends to the outside of the air conditioner case by bypassing the upper part of the drying liquid storage device, and a cooling pipe connected to the battery liquid cooling pump at another position bypasses the upper heat exchange pipe and is communicated into the plate type heat exchanger;
the plate heat exchanger is communicated with a water tank on the outer side of the air conditioner case through a bent water pipe, the bent water pipe extends from the left rear side of the air conditioner case to the left front side, and the bent water pipe extends out of the water tank outside the air conditioner case from the left side wall of the air conditioner case.
Further defined, the vehicle air conditioning unit further comprises a high pressure switch disposed on the first communication pipe and a low pressure switch disposed on the heat exchange pipe.
Further limiting, the compressor and the water pump which are integrally designed are installed on the lower bottom surface of the air conditioner case through the damping rubber pad.
Further limiting, a plurality of heat exchange holes are formed in the left side wall and the right side wall of the air conditioner case.
Further inject, the lower bottom surface of air conditioner machine case is equipped with the reinforcement base additional, compressor, water pump, dry reservoir and battery liquid cooling pump all install on the reinforcement base.
Further limiting, the cross section of the reinforced base is in a U shape, the opening end of the reinforced base is reversely buckled on the lower bottom surface of the air conditioner case, and heat dissipation holes are arranged on the upper top plane of the reinforced base side by side.
Further, the compressor and the water pump of the integrated design are electric.
The utility model has the advantages that: the battery liquid cooling system and the air-conditioning refrigeration system are compact in structural layout in the air-conditioning unit, the air-conditioning unit optimizes the layout of air-conditioning pipelines, saves the materials of circuits and pipelines, ensures that the integrated overhead air conditioner and the compression refrigeration system of the battery liquid cooling pump coupled electric automobile air conditioner meet the cooling requirement of a battery pack under the high-temperature working condition, and matches a new air-conditioning system again so as to meet the temperature requirements of a passenger cabin and a battery pack at the same time and realize scientific respective and full utilization of battery energy.
In addition, the redesign of the whole air conditioner case with the built-in integrated air conditioner is convenient for the internal pipeline traction and layout, and a plurality of radiating holes are further formed, so that the machine set parts in the case can be naturally cooled.
Drawings
Fig. 1 is a schematic top view of the present invention;
fig. 2 is a schematic perspective view of the present invention;
fig. 3 is a schematic perspective view of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement objectives and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments, wherein the front (a), the back (B), the left (C), and the right (D) in the following embodiments all use fig. 1 as a standard, and the view angles of fig. 2 and fig. 3 are used to more visually see the connection relationships and the corresponding orientations between the respective components.
As shown in fig. 1, fig. 2 and fig. 3, the integrated battery liquid-cooled air conditioning unit comprises an air conditioning case 1 and an automobile air conditioning unit installed in the air conditioning case 1, wherein the automobile air conditioning unit comprises a compressor 2, a condenser 3, a condensing fan 4, a drying liquid storage device 5 and an expansion valve 6, the battery liquid-cooled air conditioning unit further comprises a water pump 7, a water tank and a plate heat exchanger 8, and a battery liquid-cooled pump 9, the water pump 7 and the plate heat exchanger 8 are arranged in the air conditioning case 1, and the water tank is arranged outside the air conditioning case 1;
the air conditioner case 1 is square, a plurality of heat exchange holes are formed in the left side wall and the right side wall of the air conditioner case 1, the condensing fan 4 and the condenser 3 are installed on the front inner side wall A close to the air conditioner case 1, the water pump 7 and the compressor 2 are integrally designed to be electric, the water pump 7 and the compressor 2 are installed close to the rear side of the condenser 3, the water outlet of the water pump 7 is close to the water inlet of the condenser 3, and the water outlet of the water pump 7 is communicated with the water inlet of the condenser 3 through the water outlet;
a water inlet of the compressor 2 is communicated with the plate type heat exchanger 8 through a heat exchange pipe 13, the plate type heat exchanger 8 is positioned on the left rear side in the air conditioner case 1, and the heat exchange pipe of the plate type heat exchanger bypasses the upper part of the drying liquid reservoir 5 and the upper part of the expansion valve 6 in sequence;
the drying liquid storage device 5 and the expansion valve 6 are positioned on one pipeline connection path, one end of the drying liquid storage device 5 is connected to the condenser 3 through a first communication pipe 14, the other end of the drying liquid storage device 5 is connected to the expansion valve 6, the expansion valve 6 is communicated into the plate type heat exchanger 8, the drying liquid storage device 5, the expansion valve 6 and the plate type heat exchanger 8 are communicated in an L-shaped direction, the drying liquid storage device 5 is close to the condenser 3 and positioned in the left front of the compressor 2, and the expansion valve 6 is close to the plate type heat exchanger 8 and positioned in front of the plate type heat;
the battery liquid cooling pump 9 is arranged close to the right side of the plate type heat exchanger 8, a pump pipe 15 connected to the battery liquid cooling pump 9 is L-shaped, bypasses the upper part of the drying liquid storage device 5, extends to the outside of the air conditioner case 1, and a cooling pipe 16 connected to the other position of the battery liquid cooling pump 9 bypasses the upper heat exchange pipe and is communicated into the plate type heat exchanger 8;
the plate heat exchanger 8 is communicated with a water tank on the outer side of the air conditioner case 1 through a bent water pipe 17, the bent water pipe extends from the left rear side of the air conditioner case 1 to the left front side, and the bent water pipe extends out of the water tank outside the air conditioner case 1 from the left side wall of the air conditioner case 1.
In addition, the vehicle air conditioning unit comprises a high-pressure switch 18 and a low-pressure switch 19, the high-pressure switch 18 being arranged on the first connecting pipe 14, and the low-pressure switch 19 being arranged on the heat exchanging pipe 13.
Preferably, for compressor 2 at the during operation, can reduce whole air conditioning unit's vibrations, compressor 2 and the water pump 7 of integral type design utilize the cushion rubber to install on the lower bottom surface of air conditioner case 1, and the cushion rubber utilizes the nut to fix on air conditioner case 1, and compressor 2 is when vibrations like this, and the cushion rubber carries out shock attenuation processing, avoids resonance to shake the pine with the junction of other parts.
The air conditioner is characterized in that a reinforcing base 20 is additionally arranged on the lower bottom surface of the air conditioner case 1, the compressor 2, the water pump 7, the drying liquid storage device 5 and the battery liquid cooling pump 9 are all installed on the reinforcing base 20, the cross section of the reinforcing base 20 is in a U shape, the opening end of the reinforcing base is reversely buckled on the lower bottom surface of the air conditioner case 1, and heat dissipation holes 21 are formed in the upper top plane of the reinforcing base side by side.
The built-in integrated battery liquid cooling air conditioner has the refrigerating capacity of 6-10Kw, and integrates the compressor 2, the condenser 3, the condensing fan and the plate type heat exchanger 8 into a whole. The heat that comes out has mainly been given off for solving electric automobile battery when charging, discharging. 50% glycol liquid is taken away from the heat emitted by the charging and discharging of the battery through a circulating water pump 7. The temperature of the liquid brought out is reduced through the plate heat exchanger 8 of the air conditioning system, the liquid circulates like this, the temperature of the battery is gradually maintained in a constant range, and three states of a refrigeration mode, a self-circulation mode and a standby mode can be realized through electric appliance control.
It is right above the utility model provides a pair of integrated form battery liquid cooling air conditioning unit has carried out detailed introduction. The description of the specific embodiments is only for the purpose of helping understanding the method of the present invention and the core idea thereof, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides an integrated form battery liquid cooling air conditioning unit, includes air conditioner case and installs the vehicle air conditioning unit at air conditioner incasement, the vehicle air conditioning unit includes compressor, condenser, condensation fan, dry reservoir and expansion valve, its characterized in that: the battery liquid cooling air conditioning unit also comprises a water pump, a water tank, a plate heat exchanger and a battery liquid cooling pump, wherein the water pump and the plate heat exchanger are arranged in the air conditioner case, and the water tank is arranged outside the air conditioner case;
the air conditioner case is square, the condensing fan and the condenser are arranged on the front inner side wall close to the air conditioner case, the water pump and the compressor are designed into a whole, the water pump and the compressor are arranged close to the rear side of the condenser, the water outlet of the water pump is close to the water inlet of the condenser, the water pump and the compressor are communicated by a water outlet pipe,
the water inlet of the compressor is communicated with the plate heat exchanger through a heat exchange pipe, the plate heat exchanger is positioned at the left rear side in the air conditioner case, the heat exchange pipe sequentially bypasses the upper part of the drying liquid reservoir and the upper part of the expansion valve,
the drying liquid storage device and the expansion valve are positioned on a pipeline connecting path, one end of the drying liquid storage device is connected with the condenser through a first communicating pipe, the other end of the drying liquid storage device is connected with the expansion valve, the expansion valve is communicated into the plate type heat exchanger, the drying liquid storage device, the expansion valve and the plate type heat exchanger are communicated in an L-shaped direction, the drying liquid storage device is close to the condenser and positioned in the left front of the compressor, the expansion valve is close to the plate type heat exchanger and positioned in the front of the plate type,
the battery liquid cooling pump is arranged close to the right side of the plate type heat exchanger, a pump pipe connected to the battery liquid cooling pump is L-shaped and extends to the outside of the air conditioner case by bypassing the upper part of the drying liquid storage device, and a cooling pipe connected to the battery liquid cooling pump at another position bypasses the upper heat exchange pipe and is communicated into the plate type heat exchanger;
the plate heat exchanger is communicated with a water tank on the outer side of the air conditioner case through a bent water pipe, the bent water pipe extends from the left rear side of the air conditioner case to the left front side, and the bent water pipe extends out of the water tank outside the air conditioner case from the left side wall of the air conditioner case.
2. The integrated battery liquid-cooled air conditioning unit of claim 1, wherein: the vehicle air conditioning unit further comprises a high-pressure switch and a low-pressure switch, wherein the high-pressure switch is arranged on the first communication pipe, and the low-pressure switch is arranged on the heat exchange pipe.
3. The integrated battery liquid-cooled air conditioning unit of claim 1, wherein: the compressor and the water pump of integral type design utilize the shock attenuation cushion to install on the lower bottom surface of air conditioner machine case.
4. The integrated battery liquid-cooled air conditioning unit of claim 1, wherein: and a plurality of heat exchange holes are formed in the left side wall and the right side wall of the air conditioner case.
5. The integrated battery liquid-cooled air conditioning unit of claim 4, wherein: the air conditioner is characterized in that a reinforcing base is additionally arranged on the lower bottom surface of the air conditioner case, and the compressor, the water pump, the dry liquid storage device and the battery liquid cooling pump are all arranged on the reinforcing base.
6. The integrated battery liquid-cooled air conditioning unit of claim 5, wherein: the cross section of the reinforced base is in a U shape, the opening end of the reinforced base is reversely buckled on the lower bottom surface of the air conditioner case, and heat dissipation holes are arranged on the upper top plane of the reinforced base side by side.
7. The integrated battery liquid-cooled air conditioning unit of claim 3, wherein: the compressor and the water pump of integral type design are the electrodynamic type.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021429169.6U CN213167633U (en) | 2020-07-20 | 2020-07-20 | Integrated battery liquid cooling air conditioning unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021429169.6U CN213167633U (en) | 2020-07-20 | 2020-07-20 | Integrated battery liquid cooling air conditioning unit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN213167633U true CN213167633U (en) | 2021-05-11 |
Family
ID=75794041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202021429169.6U Expired - Fee Related CN213167633U (en) | 2020-07-20 | 2020-07-20 | Integrated battery liquid cooling air conditioning unit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN213167633U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113665317A (en) * | 2021-08-26 | 2021-11-19 | 浙江吉利控股集团有限公司 | Integrated heat pump system of vehicle and vehicle |
-
2020
- 2020-07-20 CN CN202021429169.6U patent/CN213167633U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113665317A (en) * | 2021-08-26 | 2021-11-19 | 浙江吉利控股集团有限公司 | Integrated heat pump system of vehicle and vehicle |
CN113665317B (en) * | 2021-08-26 | 2024-02-13 | 浙江吉利控股集团有限公司 | Integrated heat pump system of vehicle and vehicle |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207225022U (en) | A kind of new energy car battery heat management system | |
CN117673547A (en) | Independent liquid cooling power battery of new energy automobile | |
CN103287253B (en) | Liquid-liquid cold is type Hybrid Vehicle battery cooling system but | |
CN103496319B (en) | New-energy automobile power accumulator temperature control device | |
CN108417926B (en) | Power battery pack and electric automobile | |
CN110145391B (en) | Hybrid power multi-cycle cooling system | |
CN213167633U (en) | Integrated battery liquid cooling air conditioning unit | |
CN111361391A (en) | New energy automobile integrated heat management unit and control method thereof | |
CN115230435B (en) | Energy flow management machine for electric automobile and working method thereof | |
CN217319971U (en) | Thermal management system assembly and vehicle with same | |
CN207083356U (en) | A kind of coldplate cooling system for electric vehicle rapid charging stake | |
EP4269168A1 (en) | Thermal management system used for electric vehicle, and electric vehicle | |
CN214689101U (en) | Liquid cooling device of new energy automobile charging pile | |
CN215850843U (en) | P1+ P3 framework SUV battery cooling and heating waterway structure | |
CN214215469U (en) | Vehicle driving cooling system combined with vehicle-mounted air conditioner | |
CN111391616B (en) | Air conditioning system | |
CN212148306U (en) | Whole car thermal management system of integrated direct heat pump | |
CN107466193A (en) | Conduction oil cooling system for electric vehicle rapid charging stake | |
CN207124840U (en) | A kind of conduction oil cooling system for electric vehicle rapid charging stake | |
CN109424422A (en) | A kind of use for diesel engine radiator | |
CN215521256U (en) | Constant-pressure type fully-enclosed scroll compressor for vehicle | |
CN110406350A (en) | Air-conditioning and motor cooling integrated system and electric heavy type truck | |
CN220233308U (en) | Heat dissipating device and working machine | |
CN209987711U (en) | High heat exchange volume vehicle air conditioning system | |
CN220281119U (en) | Cooling system of electric forklift |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210511 |