CN105946585A - Vehicle power source managing system and electric vehicle - Google Patents
Vehicle power source managing system and electric vehicle Download PDFInfo
- Publication number
- CN105946585A CN105946585A CN201610388742.5A CN201610388742A CN105946585A CN 105946585 A CN105946585 A CN 105946585A CN 201610388742 A CN201610388742 A CN 201610388742A CN 105946585 A CN105946585 A CN 105946585A
- Authority
- CN
- China
- Prior art keywords
- management system
- power management
- vehicular power
- controller
- vehicle
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/429—Current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
-
- 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
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a vehicle power source managing system and an electric vehicle with the same. The vehicle power source managing system is connected with a vehicle control system and comprises an energy storage unit, a current control level connected with the energy storage unit and a controller connected with the energy storage unit and the current control level. The controller comprises a battery managing system and a communication interface connected with the vehicle control system. The vehicle power source managing system is further provided with a change-over switch connected with the current control level in parallel, and the change-over switch is connected with the controller. The vehicle power source managing system guarantees normal operation of a battery under the instant high current output condition, and overcurrent protection is achieved.
Description
Technical field
The application relates to electric vehicle field, is specifically related to Vehicular power management system and the peace of electric vehicle
Fill the electric vehicle of this system.
Background technology
In prior art, in electric vehicle field, lithium ion battery is gradually used to replace traditional plumbic acid
Battery, to make energy-storage system (or claiming " accumulator ").Normally, Vehicular power management system
Rated operational voltage has 6V, 12V, 24V etc..Relative to lead-acid battery, lithium ion battery is to physical rings
The situation of border and electric load state is more sensitive.Such as, at low ambient temperatures, the merit of lithium ion battery
Rate input and fan-out capability can be limited to its internal resistance increased.And in this case, too high electric current
Critical voltage then can be caused to exceed or fall below normal value, and then produce after damage battery even damages battery
Really.
This can produce carrying current beyond rated voltage or less than the limiting voltage of rated voltage.Generally
This situation can maintain several seconds, such as: for start internal combustion engine power is provided time.Specifically, if
Vehicle running voltage in low-voltage power system is 12V, and vehicle motor can reach with the upper limit of output voltage
To 15V, and high-power application may reduce output voltage to 9V or lower.When beyond this electricity
During pressure scope, it is necessary to assure battery functi on normal and also by power protection.
Therefore, it is applied to traditional vehicle when above trigger based on lithium-ion technology or booster battery
Time in (such as: automobile, truck, bus and motorcycle etc.), it may occur that specified beyond it
The phenomenon of voltage range.Such as, battery based on LiFePO4 technology, its running voltage generally exists
Between 3.7V-2V, but instantaneous voltage minimum reaches 1.6V.Battery based on LiMnOx technology, its work
Make voltage generally between 4.2V-2.5V, but instantaneous voltage minimum reaches 2V.
If battery is directly connected on the expanded metals of 12V voltage of vehicle, the input and output electric current of battery
With battery internal resistance, charged state (SOC:State Of Charge), expanded metals (Board Net)
Voltage levvl becomes certain functional relationship.If there is no current control device between battery and vehicle expanded metals, just
Have the huge current flow along with voltage fuctuation within a narrow range and flow out battery, flow in the expanded metals of vehicle 12V voltage.
Therefore, prior art is typically necessary current control device is set.Usual this electric current controls dress
Putting is a kind of power versus pulse modulating equipment.Under big current conditions if above citing, this constant power-
Pulse modulation devices is accomplished by being designed to withstand as starting the high-current pulse needed for electromotor, and this
The cost that sample does is much more expensive.
Summary of the invention
In view of this, the application provide a kind of Vehicular power management system with function of power protection and
The electric vehicle of this system is installed.
The application realizes one of by following technical solution goal of the invention: a kind of Vehicular power management system,
Be connected with vehicle control system, the current control level that is connected with energy-storage units including energy-storage units and with
The controller that energy-storage units and current control level connect.Described energy-storage units includes some lithium ion batteries.
Described controller includes battery management system and the communication interface being connected with vehicle control system；Described system
Uniting permutator also in parallel with current control level, described permutator is connected with controller.
Further, described current control level is quasiconductor current control level.
Further, described permutator is electric mechanical switch.
Further, described controller is configured to detect the state of energy-storage units, and described state is extremely
Include one or more in battery charging state, temperature and voltage less.
Further, described controller is configured to detect electric current.
Further, according to the status values of the energy-storage units detected, described controller controls electric current
Controlled stage works, so that the electric current of input in charging process and the electric current holding of output in discharge process
Within safety range.
Further, described current control level has discharge and recharge bidirectional operation mode.
Further, described vehicle control system to controller send feedback on-position information time, institute
Stating current control level and be controlled as charge mode, battery just can be charged to peak；Vehicle expanded metals
Voltage drops to low-level state, and described current control level is controlled as mode of operation of discharging, and energy-storage units is put
Electricity.
Further, described energy-storage units, current control level, controller, permutator are assembled into electricity
In the housing in pond.
The application by following technical solution two realize goal of the invention: a kind of electric vehicle, including car
Control system and Vehicular power management system as above.
Compared with prior art, the application Vehicular power management system ensure that battery is defeated at high instantaneous current
In the case of going out properly functioning, it is achieved overcurrent protection.Closer, the application Vehicular power management
System can also realize overcharge protection, over-discharge protection and solve thermal limit problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of Vehicular power management system of the present invention.
Detailed description of the invention
Here will illustrate illustrative embodiments in detail, its example represents in the accompanying drawings.Following
When description relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous and wants
Element.Embodiment described in following exemplary embodiment does not represent own consistent with the application
Embodiment.On the contrary, they only with as appended claims describes in detail, some sides of the application
The example of the apparatus and method that face is consistent.
It is only merely for describing the purpose of particular implementation at term used in this application, and is not intended to be limiting
The application." a kind of ", " described " of singulative used in the application and appended claims
" it is somebody's turn to do " be also intended to include most form, unless context clearly shows that other implications.It is also understood that
Term "and/or" used herein refer to and comprise any of one or more project of listing being associated or
Likely combine.
As it is shown in figure 1, the application Vehicular power management system, it is connected with vehicle control system 5, including
Energy-storage units 1, current control level 2 and the controller 3 being connected with energy-storage units 1 and current control level 2.
Described energy-storage units 1 includes some lithium ion batteries (not shown).Described current control level 2 is partly to lead
Body current control level, in order to manage power, heating, charged state and voltage etc., to prevent super-high-current
The situations such as output or input battery occur.Described controller 3 includes battery management system (BMS:Battery
Management System) and the communication interface that is connected with vehicle control system 5.
Described controller 3 detects the state of energy-storage units 4, including charged state, cell temperature, unit
Voltage etc..Further, described controller 3 also detects the numerical value of electric current.Can distinguish according to above numerical value
Calculate battery and allow input or output and voltage.These values in order to drive current control level 1 to work,
So that in charging process input electric current and discharge process in output electric current be maintained at safety range
Within, protect battery and whole system.
In order in accordance with cost efficiency principle, electric current and the production of power in described quasiconductor current control level 2
Measure electric current when being limited to normal vehicle operation or the reasonable lower limit of power.
In order to ensure battery high instantaneous current export in the case of properly functioning, it is achieved overcurrent protection,
The application Vehicular power management system also includes the permutator 4 in parallel with current control level 1.
This permutator 4 is the same with the high rheotrope of general starter, can be assembled into and send out
In motivation relay or other equipment.In one embodiment, described permutator is electric mechanical switch.
If vehicle control system 5 needs energy-storage units 1 output HIGH current (such as engine start),
Controller 3 starts this permutator 4, it is allowed to high-current flow goes out battery.Owing to controller 3 can make energy storage
Unit 1 keeps full power state, controls parallel current control level 2 and permutator 4 simultaneously, and this is not only
Make battery can export or input high electric current and the protection to energy-storage units 1 can be realized.Controller
3 can at any time be operated individually or simultaneously current control level 2 and permutator 4.
Further, described current control level 1 has discharge and recharge bidirectional operation mode, and therefore electric current controls
Level 2 can the most effectively control the charged state of energy-storage units 1.Further, the application proposes
A kind of scheme of regenerative braking under low-pressure state (or claiming regenerative braking, Regenerative Braking),
I.e. under low-level charged state, if vehicle control system 5 sends feedback on-position to controller 3
Information command time, described current control level 1 is controlled as charge mode, and battery just can be electrically charged
To peak.Correspondingly, it is also possible to carry out reverse operating, if the 12V expanded metals voltage of vehicle drops to low
Level, described current control level 1 is controlled as mode of operation of discharging, thus can control battery
Energy-storage units 1 discharges.
In one embodiment, described energy-storage units 1, current control level 2, controller 3, permutator
4 assemblies such as grade can be assembled in the housing of battery.
The theme of the application and core are exactly to propose a kind of vehicle of based on low pressure relevant with lithium ion battery
Power-supply management system, can complete the overcurrent protection for system self, overcharge protection, excess
Discharge prevention and solve thermal limit problem, additionally proposes and a kind of meets very much Cost Benefit Principle
Method provides high electric current for electric motor starting.
In superincumbent description, elaborate the details of technical scheme, but, people in the art
Member will appreciate that, the invention is not restricted to the detail listed by above-described embodiment, but can be in right
Require change in limited range.
The foregoing is only the better embodiment of the application, not in order to limit the application, all at this
Within the spirit of application and principle, any modification, equivalent substitution and improvement etc. done, should be included in this
Within the scope of application protection.
Claims (10)
1. a Vehicular power management system, is connected with vehicle control system, it is characterised in that: include storage
Can the unit current control level that is connected with energy-storage units and being connected with energy-storage units and current control level
Controller；Described energy-storage units includes some lithium ion batteries；Described controller includes battery management system
And the communication interface being connected with vehicle control system；The conversion that described system is also in parallel with current control level
Switch, described permutator is connected with controller.
2. Vehicular power management system as claimed in claim 1, it is characterised in that: described electric current controls
Level is quasiconductor current control level.
3. Vehicular power management system as claimed in claim 1, it is characterised in that: described permutator
For electric mechanical switch.
4. Vehicular power management system as claimed in claim 1, it is characterised in that: described controller quilt
Be configured for detecting the state of energy-storage units, described state at least include battery charging state, temperature with
And one or more in voltage.
5. Vehicular power management system as claimed in claim 4, it is characterised in that: described controller quilt
It is configured for detecting electric current.
6. the Vehicular power management system as described in claim 4 or 5, it is characterised in that: according to detection
The status values of the energy-storage units arrived, described controller controls current control level work, so that charging
Within in the electric current inputted in journey and discharge process, the electric current of output is maintained at safety range.
7. Vehicular power management system as claimed in claim 1, it is characterised in that: described electric current controls
Level has discharge and recharge bidirectional operation mode.
8. Vehicular power management system as claimed in claim 7, it is characterised in that: described wagon control
System is when controller sends feedback on-position information, and described current control level is controlled as work of charging
Pattern, battery just can be charged to peak；Vehicle expanded metals voltage drop to low-level state, described electric current
Controlled stage is controlled as mode of operation of discharging, and energy-storage units discharges.
9. Vehicular power management system as claimed in claim 1, it is characterised in that: described energy-storage units,
Current control level, controller, permutator are assembled in the housing of battery.
10. an electric vehicle, it is characterised in that: include vehicle control system and such as claim 1
To the Vehicular power management system described in 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610388742.5A CN105946585B (en) | 2016-06-02 | 2016-06-02 | A kind of Vehicular power management system and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610388742.5A CN105946585B (en) | 2016-06-02 | 2016-06-02 | A kind of Vehicular power management system and electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105946585A true CN105946585A (en) | 2016-09-21 |
| CN105946585B CN105946585B (en) | 2018-10-19 |
Family
ID=56908496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610388742.5A Active CN105946585B (en) | 2016-06-02 | 2016-06-02 | A kind of Vehicular power management system and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105946585B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117048A (en) * | 2017-04-14 | 2017-09-01 | 铭创(福建)电子科技有限公司 | The long-distance management device and method of a kind of new energy vehicle electrokinetic cell |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842959A (en) * | 2007-11-01 | 2010-09-22 | 通用电气公司 | System and method for battery control of hybrid locomotrives |
| CN101958563A (en) * | 2009-07-14 | 2011-01-26 | 通用汽车环球科技运作公司 | The controlling schemes of the balanced electric charge of HV storage battery |
| CN102832657A (en) * | 2011-06-16 | 2012-12-19 | 凹凸电子（武汉）有限公司 | Battery management system and method |
| US20150142189A1 (en) * | 2013-11-15 | 2015-05-21 | Institute For Information Industry | Power generation control system, method and non-transitory computer readable storage medium of the same |
| KR101587358B1 (en) * | 2014-09-02 | 2016-02-02 | 엘에스산전 주식회사 | A hybrid vehicle |
| CN105552980A (en) * | 2014-10-22 | 2016-05-04 | 福特全球技术公司 | Method for controlling a voltage source for charging a battery of a motor vehicle |
-
2016
- 2016-06-02 CN CN201610388742.5A patent/CN105946585B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842959A (en) * | 2007-11-01 | 2010-09-22 | 通用电气公司 | System and method for battery control of hybrid locomotrives |
| CN101958563A (en) * | 2009-07-14 | 2011-01-26 | 通用汽车环球科技运作公司 | The controlling schemes of the balanced electric charge of HV storage battery |
| CN102832657A (en) * | 2011-06-16 | 2012-12-19 | 凹凸电子（武汉）有限公司 | Battery management system and method |
| US20150142189A1 (en) * | 2013-11-15 | 2015-05-21 | Institute For Information Industry | Power generation control system, method and non-transitory computer readable storage medium of the same |
| KR101587358B1 (en) * | 2014-09-02 | 2016-02-02 | 엘에스산전 주식회사 | A hybrid vehicle |
| CN105552980A (en) * | 2014-10-22 | 2016-05-04 | 福特全球技术公司 | Method for controlling a voltage source for charging a battery of a motor vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117048A (en) * | 2017-04-14 | 2017-09-01 | 铭创(福建)电子科技有限公司 | The long-distance management device and method of a kind of new energy vehicle electrokinetic cell |
| CN107117048B (en) * | 2017-04-14 | 2019-06-07 | 铭创(福建)电子科技有限公司 | A kind of long-distance management device and method of new energy vehicle power battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105946585B (en) | 2018-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104085312B (en) | A kind of cell management system of electric automobile | |
| JP5570782B2 (en) | POWER SUPPLY DEVICE, VEHICLE EQUIPPED WITH THE SAME, AND CHARGING / DISCHARGE CONTROL METHOD FOR POWER SUPPLY DEVICE | |
| US10464507B2 (en) | Battery management system and switching method thereof | |
| CN102161315B (en) | Vehicle power supply apparatus | |
| CN102742066B (en) | Heavy current battery system and the method being used for controlling heavy current battery system | |
| CN105324274B (en) | Automotive power supply system | |
| JP5307847B2 (en) | Vehicle power supply system | |
| CN102910082B (en) | Main and auxiliary power supply switching system for electric vehicle | |
| CN102479983B (en) | For charge control method and the device of electric automobile power battery | |
| CN110226275A (en) | Electrical system and for make electrical system be powered method | |
| CN110497796A (en) | A low-voltage power supply system and control method for a new energy vehicle | |
| CN105206880A (en) | Method for Revitalizing and Increasing Lithium Ion Battery Capacity | |
| US20120262106A1 (en) | Power supply control device | |
| CN103001268B (en) | Charging system for electric automobile, method and comprise the automobile of charging system for electric automobile | |
| CN202276164U (en) | Vehicle-mounted charger power supply device | |
| CN103238260A (en) | Battery management system for restricted idle vehicles | |
| EP3232049B1 (en) | Automobile starting control system and automobile | |
| CN103620911A (en) | Secondary battery charging control device and charging control method | |
| CN111546938B (en) | Vehicle hybrid storage battery management system and method | |
| JP2015180140A (en) | Power supply system for vehicle | |
| EP2792047B1 (en) | Method and system for battery charging of a vehicle | |
| CN209963790U (en) | 24V emergency starting power supply | |
| CN105946585A (en) | Vehicle power source managing system and electric vehicle | |
| CN115107563B (en) | Sleep control method, device, equipment and storage medium of battery management system | |
| KR102348991B1 (en) | Lithium-ion phosphate start battery discharge vehicle phosphate battery self power restore device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230530 Granted publication date: 20181019 |
|
| PP01 | Preservation of patent right |