CN106347139A - Composite power supply regeneration braking device applied to pure electric vehicles - Google Patents

Composite power supply regeneration braking device applied to pure electric vehicles Download PDF

Info

Publication number
CN106347139A
CN106347139A CN201610989385.8A CN201610989385A CN106347139A CN 106347139 A CN106347139 A CN 106347139A CN 201610989385 A CN201610989385 A CN 201610989385A CN 106347139 A CN106347139 A CN 106347139A
Authority
CN
China
Prior art keywords
composite power
power source
super capacitor
power supply
pure electric
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.)
Pending
Application number
CN201610989385.8A
Other languages
Chinese (zh)
Inventor
周美兰
刘占华
吴晓刚
冯继峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin University of Science and Technology
Original Assignee
Harbin University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin University of Science and Technology filed Critical Harbin University of Science and Technology
Priority to CN201610989385.8A priority Critical patent/CN106347139A/en
Publication of CN106347139A publication Critical patent/CN106347139A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L7/00Electrodynamic brake systems for vehicles in general
    • B60L7/10Dynamic electric regenerative braking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L7/00Electrodynamic brake systems for vehicles in general
    • B60L7/10Dynamic electric regenerative braking
    • B60L7/18Controlling the braking effect
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/14Plug-in electric vehicles

Abstract

The invention discloses a composite power supply regeneration braking device applied to pure electric vehicles and belongs to the technical field of composite power supplies of pure electric vehicles. In a system of the composite power supply regeneration braking device, the input end of a voltage/current detection circuit is connected to a storage battery and a super capacitor; the output end of the voltage/current detection circuit is connected to a composite power supply regeneration braking system; the composite power supply regeneration braking system is connected to a fuzzy control module, a vehicle state detection module, a motor braking system, a hydraulic braking system, a super capacitor and a bidirectional DC/DC converter; the storage battery is connected to the super capacitor and a motor controller via the bidirectional DC/DC converter; the motor controller is connected to a motor. Through the composite power supply regeneration braking device applied to pure electric vehicles, the problems that the energy supply of the power supply is insufficient, the service life of the storage battery is short and the system energy recovery of the motor braking system is low when the vehicles are braked can be solved; the composite power supply regeneration braking device also has the characteristics of intellectualization and high safety coefficient.

Description

A kind of pure electric automobile composite power source regenerative braking device
Technical field:
The invention belongs to pure electric automobile composite power source technical field and in particular to a kind of pure electric automobile composite power source again Raw brake unit.
Background technology:
The power supply of existing market pure electric automobile has two kinds of main Types, and the first kind is using accumulator as single power supply, Equations of The Second Kind is to be combined as composite power source using accumulator and super capacitor and two-way dc/dc changer.Single power supply is because being subject to Distance travelled is short, charging is difficult and the restriction of the low factor of service lifetime of accumulator, therefore composite power source regeneration brake system Receive significant attention.The advantages such as the specific power height of super capacitor, rapid large-current discharge and recharge and accumulator are compared energy by composite power source Measure high Dominant Facies to combine, the power demand of shared pure electric automobile.Composite power source regeneration brake system can be by vehicle The part energy producing when braking during traveling is converted into power storage in energy storage device, to prolongation VMT Vehicle-Miles of Travel And it is significant with the economic performance improving vehicle to make full use of the energy.
Content of the invention:
It is an object of the invention to it is short to solve power supply energy supply deficiency, service lifetime of accumulator in pure electric automobile running And motor braking service system energy regenerating low problem during vehicle braking.
A kind of present invention pure electric automobile composite power source regenerative braking device, including voltage/current detection circuit, compound electric Source regeneration brake system, accumulator, super capacitor, two-way dc/dc changer, brake fluid system, electric machine controller and motor,
The input of described voltage/current detection circuit connects accumulator and super capacitor, voltage/current detection circuit Outfan connects composite power source regeneration brake system;
Described composite power source regeneration brake system connects fuzzy control model, vehicle condition detection module, motor system respectively Dynamic system, brake fluid system, super capacitor and two-way dc/dc changer;
Described accumulator is connected with super capacitor and electric machine controller through two-way dc/dc changer, and electric machine controller connects Motor.
As a further improvement on the present invention, described motor connects composite power source regenerative braking system by information acquisition module System.Information acquisition module monitoring electric machine operation state provides instant data for composite power source regeneration brake system.
As a further improvement on the present invention, described composite power source regeneration brake system connection status display circuit.State Display circuit can show accumulator or super capacitor battery condition, points out driver vehicle's power conditions.
As a further improvement on the present invention, described composite power source regeneration brake system connects protection circuit, protection circuit Connect two-way dc/dc changer.Protection circuit is always to two-way dc/dc converter output terminal collection voltages signal and it is electric Pressure is contrasted with reference voltage, and when voltage is higher than reference voltage, two-way dc/dc changer quits work, and accumulator is carried out Protection.
The invention has the benefit that
The voltage/current detection circuit moment carries out electric power detection, vehicle condition detection module to accumulator and super capacitor Moment detects vehicle demand power, jointly provides instant data for composite power source regeneration brake system.Vehicle condition detection module Required brake force during detection vehicle braking, and provide instant data for total braking force distribution system.Accumulator and two-way dc/ It is electrical machine with power jointly that the series connection of dc changer composes in parallel composite power source again with super capacitor.Due to super capacitor directly with Dc bus connects, and the high power charging-discharging stream major part on dc bus flows directly into/flow out super capacitor, it is possible to reduce big The impact to accumulator for the electric current, meanwhile, super capacitor can be with fast charging and discharging, and convenient offer is required when accelerating and starting Momentary high power quick absorption and regeneration braking energy, improve the work efficiency of super capacitor further.In vehicle operation In, high current cannot be provided when the electricity of super capacitor is low, accumulator can be charged to super capacitor by two-way dc/dc, makes Super capacitor can to vehicle accelerating, climbing when, demand provide high-power when high-power, meet the driving requirements of vehicle. When accumulator electric-quantity is too low, when super capacitor electricity is very high, super capacitor is charged a battery by two-way dc/dc changer, Ensure that vehicle can be with normally travel.
Brief description:
Fig. 1 is the principle schematic of pure electric automobile composite power source regenerative braking device;
Fig. 2 is voltage detecting circuit;
Fig. 3 is current detection circuit;
Fig. 4 is protection circuit;
Fig. 5 is composite power source regeneration brake system workflow diagram.
Specific embodiment:
Below in conjunction with accompanying drawing, the invention will be further described
Referring to a kind of pure electric automobile composite power source regenerative braking device of Fig. 1 present invention, including voltage/current detection electricity Road 1, composite power source regeneration brake system 8, accumulator 4, super capacitor 5, two-way dc/dc changer 10, brake fluid system 11, Electric machine controller 12 and motor 14, the input of described voltage/current detection circuit 1 connects accumulator 4 and super capacitor 5, electricity The outfan of pressure/current detection circuit 1 connects composite power source regeneration brake system 8,8 points of described composite power source regeneration brake system Lian Jie not fuzzy control model 2, vehicle condition detection module 7, motor braking system 3, brake fluid system 11, super capacitor 5 With two-way dc/dc changer 10, described accumulator 4 is through two-way dc/dc changer 10 and super capacitor 5 and electric machine controller 12 company Connect, electric machine controller 12 connects motor 14, described motor 14 connects composite power source regenerative braking system by information acquisition module 13 System 8, described composite power source regeneration brake system 8 connection status display circuit 6, described composite power source regeneration brake system 8 connects Protection circuit 9, protection circuit 9 connects two-way dc/dc changer 10.
Referring to the drawings 2, voltage detecting circuit is gone here and there with operational amplifier lmh6643ma by Hall voltage sensor vsm025a Joint group becomes, and Hall voltage sensor has good precision and the linearity.
Referring to the drawings 3, current detection circuit is to be composed in series by two lm324 amplifier chips, and ultimate principle is adopted when input During sample electric current, be converted to voltage through resistance, then make comparisons with given reference voltage after operational amplifier amplification, if it exceeds Given reference voltage, then export a high level, conversely, then exporting a low level.Lm324 amplifier chip is a general Integrated four road operational amplifiers, major advantage is exactly that with low cost, cost performance is high.
Referring to the drawings 4, protection circuit is formed with hcpl4504 chip-in series by two lm319n comparator parallel connections again, protection Circuit plays buffer action to input, the output signal of telecommunication.
Referring to the drawings 5, whole device and each module initialization, first determine whether whether motor works, such as do not work at the beginning of return Beginningization, such as work then enter next step and judge whether vehicle stops working;Stop working in this way and just enter to terminate;As otherwise system enters next Step judges that vehicle needs whether power is more than zero;1. enter to implement fuzzy control strategy 1 entrance next step in this way and judge compound electric Whether source electricity meets power demand, returns in this way and continues to judge whether vehicle stops working, such as otherwise system finishing, 2. such as otherwise enters Enter to implement fuzzy control strategy 2 and travel further into judge whether composite power source electricity is full of, such as otherwise return and continue to judge vehicle Whether flame-out module, enters next step in this way and stops providing electric energy to composite power source and returning and judge whether vehicle extinguishes.
There is the corresponding control strategy of the situation being likely to be encountered in pure electric automobile running in fuzzy control model, The protection content of control strategy non-invention, the present invention is only to provide carrier for control strategy.Fuzzy control model: vehicle When motor is in motoring condition, composite power source regeneration brake system can power according to needed for vehicle and accumulator and super electricity The battery condition held is transferred control strategy from fuzzy control model and demand power is allocated;The motor of vehicle is in generating During state, motor braking system and brake fluid system provide brake force for vehicle jointly, meanwhile, composite power source regeneration system Dynamic system the total braking force size according to needed for vehicle can be transferred control strategy total braking force carried out from fuzzy control model The energy producing when distributing and vehicle regenerative being braked is allocated.

Claims (4)

1. a kind of pure electric automobile composite power source regenerative braking device, including voltage/current detection circuit (1), composite power source again Raw brakes (8), accumulator (4), super capacitor (5), two-way dc/dc changer (10), brake fluid system (11), motor Controller (12) and motor (14) it is characterised in that:
The input of described voltage/current detection circuit (1) connects accumulator (4) and super capacitor (5), voltage/current detection The outfan of circuit (1) connects composite power source regeneration brake system (8);
Described composite power source regeneration brake system (8) connects fuzzy control model (2), vehicle condition detection module (7), electricity respectively Brake system (3), brake fluid system (11), super capacitor (5) and two-way dc/dc changer (10);
Described accumulator (4) is connected with super capacitor (5) and electric machine controller (12) through two-way dc/dc changer (10), motor Controller (12) connects motor (14).
2. a kind of pure electric automobile composite power source regenerative braking device according to jurisdictions mandate 1 it is characterised in that: described electricity Machine (14) connects composite power source regeneration brake system (8) by information acquisition module (13).
3. a kind of pure electric automobile composite power source regenerative braking device according to jurisdictions mandate 1 or 2 it is characterised in that: institute State composite power source regeneration brake system (8) connection status display circuit (6).
4. a kind of pure electric automobile composite power source regenerative braking device according to jurisdictions mandate 3 it is characterised in that: described multiple Close power supply regenerative brakes (8) and connect protection circuit (9), protection circuit (9) connects two-way dc/dc changer (10).
CN201610989385.8A 2016-11-10 2016-11-10 Composite power supply regeneration braking device applied to pure electric vehicles Pending CN106347139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610989385.8A CN106347139A (en) 2016-11-10 2016-11-10 Composite power supply regeneration braking device applied to pure electric vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610989385.8A CN106347139A (en) 2016-11-10 2016-11-10 Composite power supply regeneration braking device applied to pure electric vehicles

Publications (1)

Publication Number Publication Date
CN106347139A true CN106347139A (en) 2017-01-25

Family

ID=57861681

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610989385.8A Pending CN106347139A (en) 2016-11-10 2016-11-10 Composite power supply regeneration braking device applied to pure electric vehicles

Country Status (1)

Country Link
CN (1) CN106347139A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018176728A1 (en) * 2017-04-01 2018-10-04 苏州汇川联合动力系统有限公司 Energy feedback protection method and system for synchronous electric motor
CN109866622A (en) * 2019-03-26 2019-06-11 西安电子科技大学芜湖研究院 A kind of efficient energy recovery system based on quick charging battery
WO2020067947A1 (en) * 2018-09-28 2020-04-02 Scania Cv Ab Power supply arrangement with separated power links and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778326A (en) * 1994-10-25 1998-07-07 Kabushikikaisha Equos Research Hybrid vehicle with battery charge control relative to a driving route
CN102501776A (en) * 2011-10-28 2012-06-20 三门峡速达交通节能科技有限公司 Composite power energy management prediction control system of pure-electric vehicle
CN203326730U (en) * 2013-07-23 2013-12-04 哈尔滨理工大学 Regenerative braking energy efficient feedback device of all-electric vehicle
CN204210320U (en) * 2014-11-17 2015-03-18 哈尔滨理工大学 Based on the DC/DC control system of electronlmobil regenerative brake
CN204506595U (en) * 2015-04-10 2015-07-29 哈尔滨理工大学 Composite energy storage type drive system of electric automobile
CN204567345U (en) * 2015-05-07 2015-08-19 哈尔滨理工大学 A kind of electronlmobil composite supply control system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778326A (en) * 1994-10-25 1998-07-07 Kabushikikaisha Equos Research Hybrid vehicle with battery charge control relative to a driving route
CN102501776A (en) * 2011-10-28 2012-06-20 三门峡速达交通节能科技有限公司 Composite power energy management prediction control system of pure-electric vehicle
CN203326730U (en) * 2013-07-23 2013-12-04 哈尔滨理工大学 Regenerative braking energy efficient feedback device of all-electric vehicle
CN204210320U (en) * 2014-11-17 2015-03-18 哈尔滨理工大学 Based on the DC/DC control system of electronlmobil regenerative brake
CN204506595U (en) * 2015-04-10 2015-07-29 哈尔滨理工大学 Composite energy storage type drive system of electric automobile
CN204567345U (en) * 2015-05-07 2015-08-19 哈尔滨理工大学 A kind of electronlmobil composite supply control system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018176728A1 (en) * 2017-04-01 2018-10-04 苏州汇川联合动力系统有限公司 Energy feedback protection method and system for synchronous electric motor
WO2020067947A1 (en) * 2018-09-28 2020-04-02 Scania Cv Ab Power supply arrangement with separated power links and method
CN109866622A (en) * 2019-03-26 2019-06-11 西安电子科技大学芜湖研究院 A kind of efficient energy recovery system based on quick charging battery
CN109866622B (en) * 2019-03-26 2021-06-04 西安电子科技大学芜湖研究院 High-efficiency energy recovery system based on quick-charging battery

Similar Documents

Publication Publication Date Title
CN106347139A (en) Composite power supply regeneration braking device applied to pure electric vehicles
CN103072492B (en) Active control type hybrid power system for pure electric bus and control method of active control type hybrid power system
CN102785654B (en) A kind of electric control hydraulic braking system and control method thereof
US8499909B2 (en) Peak demand reduction in mining haul trucks utilizing an on-board energy storage system
CN104163111A (en) Electric vehicle combined energy range extending system based on bidirectional DC/DC
CN103192721B (en) Braking system and braking method of double-shaft driven electric vehicle
CN104972919B (en) The power distribution means and energy distributing method of a kind of distributed driving electric motor car compound energy
CN108638874B (en) Energy storage management system based on extended range vehicle
CN104960429A (en) Energy distribution device and energy distribution method of compound energy sources of urban electric bus
CN103909922A (en) Vehicle control strategy of series hybrid electric vehicle
CN107745717B (en) Rail traffic hybrid power system control circuit, rail traffic vehicles and its method of supplying power to
CN103318046B (en) A kind of pure electric light bus dynamic assembly
CN103003117A (en) Energy control system and method for a hybrid vehicle
CN204674395U (en) Based on the dual energy source electric car energy management system of predictive control
CN101905695A (en) Hybrid vehicle energy management method
CN102133894A (en) Control method of feeding and braking of electric vehicle driving motor system
CN104608644A (en) Electric automobile segmentation composite braking system and electric automobile segmentation composite braking energy recovery method
KR20120105088A (en) Smart energy management system using energy storage system
CN104960431A (en) Energy distributing device and method for electric car based on lithium-rich manganese-based lithium battery
CN103552472B (en) Non-rice habitats stroke-increasing electric automobile regenerative braking method
CN110962616B (en) Vehicle composite energy system integrating hydraulic power and battery and control method thereof
CN203126503U (en) Hybrid electric vehicle using composite power supply power system
CN204915337U (en) Mixed energy memory of automobile -used super capacitor and battery
CN105896712A (en) Combined electric energy control system and control method for electric vehicle
CN109720204A (en) A kind of fault detection system and method for DC/DC converter

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170125