CN103448635A - Pure electric vehicle and vehicle control system thereof - Google Patents

Pure electric vehicle and vehicle control system thereof Download PDF

Info

Publication number
CN103448635A
CN103448635A CN2013103587380A CN201310358738A CN103448635A CN 103448635 A CN103448635 A CN 103448635A CN 2013103587380 A CN2013103587380 A CN 2013103587380A CN 201310358738 A CN201310358738 A CN 201310358738A CN 103448635 A CN103448635 A CN 103448635A
Authority
CN
China
Prior art keywords
bus
road
control system
whole
controller
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
CN2013103587380A
Other languages
Chinese (zh)
Inventor
夏毅
张伟辉
滕建龙
何伟
冯擎峰
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.)
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
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 Zhejiang Geely Holding Group Co Ltd, Zhejiang Geely Automobile Research Institute Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN2013103587380A priority Critical patent/CN103448635A/en
Publication of CN103448635A publication Critical patent/CN103448635A/en
Pending legal-status Critical Current

Links

Images

Abstract

The invention relates to a vehicle control system, which comprises a vehicle controller, a plurality of auxiliary systems or devices, a battery management system and a motor controller. The auxiliary systems or devices are connected with the vehicle controller through a first loop of CAN (Controller Area Network) bus. The battery management system is connected with the vehicle controller through a second loop of CAN bus. The motor controller is connected with the vehicle controller through a third loop of CAN bus. The invention additionally provides a pure electric vehicle which comprises the vehicle control system. The pure electric vehicle and the vehicle control system thereof provided by the invention have the advantage that the CAN bus communication network of the vehicle control system can be effectively prevented from being paralyzed.

Description

Pure electric automobile and whole-control system thereof
Technical field
The present invention relates to automobile manufacturing field, particularly about a kind of pure electric automobile and whole-control system thereof.
Background technology
Along with the development of auto manufacturing, new-energy automobile will become the main flow of future automobile, and at present domestic and international each large motor plant has started emphasis and researched and developed and start selling new-energy automobile.New-energy automobile, by orthodox car, has difference more or less with orthodox car again.Pure electric automobile is one of them of new-energy automobile, take pure electric automobile as example, and the usage degree of the electrical equipment on it, electric, electronics and electric power is apparently higher than orthodox car, the electric-control system complexity, therefore, the proper communication between each control unit just becomes particularly important.
The pure electric automobile whole-control system generally comprises entire car controller (Vehicle Control Unit, VCU), electric boosting steering system (Electric Power Steering, EPS), anti-skid brake system (Anti-lock Braking System, ABS), many information displays, instrument, battery management system (Battery Management System, BMS) and electric machine controller (Motor Control Unit, MCU).
In the prior art, a general road or the two-way CAN(Controller Area Network of adopting, controller local area network) bus connects each system or device (comprises electric boosting steering system, anti-skid brake system, many information displays, instrument, battery management system and electric machine controller) and entire car controller, yet, due to the CAN high-voltage value of each system or device and the CAN low voltage value is not mated or quantity of information is too high, the frame that very easily makes the mistake increases, the CAN bus load is crossed high fault, easily cause the paralysis of the CAN bus communication network of whole-control system.
Summary of the invention
The object of the invention is to provide a kind of pure electric automobile and whole-control system thereof, can effectively avoid the paralysis of the CAN bus communication network of whole-control system.
For reaching above-mentioned advantage, the invention provides a kind of whole-control system, it comprises entire car controller, a plurality of ancillary system or device, battery management system and electric machine controller.Described a plurality of ancillary system or device are connected with described entire car controller by first via CAN bus, described battery management system is connected with described entire car controller by the second road CAN bus, and described electric machine controller is connected with described entire car controller by Third Road CAN bus.
In one embodiment of the invention, described a plurality of ancillary system or device comprise in electric boosting steering system, anti-skid brake system, many information displays and instrument at least wherein two.
In one embodiment of the invention, described first via CAN bus, described the second road CAN bus and described Third Road CAN bus are high-speed CAN bus.
In one embodiment of the invention, the transfer rate of described first via CAN bus, described the second road CAN bus and described Third Road CAN bus is more than or equal to per second 500 kilobits.
In one embodiment of the invention, the transfer rate of described first via CAN bus is less than the transfer rate of described the second road CAN bus and described Third Road CAN bus.
In one embodiment of the invention, described first via CAN bus, described the second road CAN bus and described Third Road CAN bus all adopt differential signal transmission.
In one embodiment of the invention, described first via CAN bus comprises first via CAN high tension cord and first via CAN primary cable.Described the second road CAN bus comprises the second road CAN high tension cord and the second road CAN primary cable.Described Third Road CAN bus comprises Third Road CAN high tension cord and Third Road CAN primary cable.
In one embodiment of the invention, the cycle that each system in described a plurality of ancillary system or device or device send data-signal is 500 milliseconds to 1000 milliseconds.
In one embodiment of the invention, the cycle of described battery management system and described electric machine controller transmission data-signal is 10 milliseconds to 100 milliseconds.
The present invention also provides a kind of pure electric automobile, and described pure electric automobile comprises above-mentioned any one whole-control system.
In pure electric automobile of the present invention and whole-control system thereof, because a plurality of ancillary systems or device, battery management system and electric machine controller are connected with entire car controller by independent CAN bus respectively, by quantity and the connection mode of rational deployment CAN bus, can avoid largely because signal disturbs, erroneous frame increases, the too high whole CAN network service paralysis problem caused of load factor.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification sheets, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
The accompanying drawing explanation
Figure 1 shows that the configuration diagram of whole-control system of the present invention.
The specific embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to foundation, the present invention proposes the specific embodiment, structure, feature and effect thereof, is described in detail as follows.
Figure 1 shows that the configuration diagram of whole-control system of the present invention.Refer to Fig. 1, the whole-control system 10 of the present embodiment can be used for pure electric automobile, it comprise entire car controller 12, a plurality of ancillary system or install 13, battery management system 14 and electric machine controller 15, wherein, a plurality of ancillary systems or install 13 and be connected with entire car controller 12 by first via CAN bus 101, battery management system 14 is connected with entire car controller 12 by the second road CAN bus 102, and electric machine controller 15 is connected with entire car controller 12 by Third Road CAN bus 103.
A plurality of ancillary systems or install 13 and be mainly system or the device that quantity of information is low, in the present embodiment, a plurality of ancillary systems or install 13 and comprise electric boosting steering system 132, anti-skid brake system 133, many information displays 134 and instrument 135, but the present invention is not as limit, in other embodiments, a plurality of ancillary systems or install 13 can comprise in electric boosting steering system 132, anti-skid brake system 133, many information displays 134 and instrument 135 any two or more.
Particularly, electric boosting steering system 132 is power steering systems that a kind of direct dependence motor provides auxiliary torque, it mainly is comprised of torque sensor, car speed sensor, electrical motor, speed reduction gearing and electronic control unit (Electronic Control Unit, ECU) etc.
Anti-skid brake system 133 is installed on the automobile with water brake, can avoid to lose control of one's vehicle, improves vehicle safety performance.The information of many information displays 134 for showing that chaufeur is required, for example, time, temperature, date, GPS(Global Positioning System, global positioning system) map or displaying video.
Instrument 135 can comprise motor speed table, average speed indicator, amperemeter/ammtr, volt meter and residual electricity scale.
Battery management system 14 be mainly used in to the electrokinetic cell parameter of pure electric automobile monitor in real time, trouble diagnosing, battery charge state (Sate of Charge; SOC) estimation, the estimation of stroke mileage, short-circuit protection, leakage current detect and charge and discharge mode selection etc.; battery management system 14 carries out information interaction by the second road CAN bus 102 with entire car controller 12, ensures that pure electric automobile is efficient, reliable, safe operation.
First via CAN bus 101, the second road CAN bus 102 and Third Road CAN bus 103 can be high-speed CAN bus, and CAN bus 101,102,103 is compared with general communication bus, has the characteristics of outstanding reliability, real-time and alerting ability.The transfer rate of first via CAN bus 101, the second road CAN bus 102 and Third Road CAN bus 103 can be more than or equal to per second 500 kilobits (500kbits/sec), the transfer rate of first via CAN bus 101 can be less than the transfer rate of the second road CAN bus 102 and Third Road CAN bus 103, but the relation between the transfer rate of first via CAN bus 101, the second road CAN bus 102 and Third Road CAN bus 103 is not limited with the present embodiment.
Each road CAN bus 101,102,103 (for example all adopts two wires, Shielded Twisted Pair) being respectively used to different data transmits, article two, in wire is the CAN high tension cord, another is the CAN primary cable, wherein, first via CAN bus 101 comprises first via CAN high tension cord 101a and first via CAN primary cable 101b, the second road CAN bus 102 comprises the second road CAN high tension cord 102a and the second road CAN primary cable 102b, and Third Road CAN bus 103 comprises Third Road CAN high tension cord 103a and Third Road CAN primary cable 103b.First via CAN bus 101, the second road CAN bus 102 and Third Road CAN bus 103 all adopt differential signal transmission, differential signal transmission refers on two wires of Ge road CAN bus 101,102,103 all transmission of data signals, each road CAN bus 101,102,103 is when dominance condition, the amplitude of the data-signal transmitted on its two wires equates, single spin-echo; Each road CAN bus 101,102,103 is when recessive state, and on its two wires, to have identical predeterminated voltage value, this predeterminated voltage value to be called static flat in effect.
Entire car controller 12, a plurality of ancillary system or install 13, can be provided with the transceiver (not shown) in each in battery management system 14 and electric machine controller 15, transceiver can be sent to data-signal on corresponding CAN bus 101,102,103, also can receive the data-signal of self-corresponding CAN bus 101,102,103.While receiving data-signal, the data-signal that the interior transceiver of entire car controller 12 of take receives first via CAN bus 101 is example, transceiver in entire car controller 12 receives the data-signal of first via CAN high tension cord 101a and first via CAN primary cable 101b, and adopt the magnitude of voltage on first via CAN high tension cord 101a to deduct the magnitude of voltage on first via CAN primary cable 101b, to show that the voltage after processing also is sent to the voltage after processing the CAN reception area of entire car controller 12, transceiver can be eliminated static to this kind of processing mode of data-signal and put down or other any overlapping voltage, thereby can avoid the interference of some noises.
In the present embodiment, due to a plurality of ancillary systems or install 13, battery management system 14 and electric machine controller 15 be connected with entire car controller 12 by independent CAN bus 101,102,103 respectively, each road CAN bus 101,102,103 can be formulated different CAN high-voltage values and CAN low voltage value according to the needs of self, and be independent of each other, therefore, can avoid the CAN high-voltage value between each system, device or controller and the CAN low voltage value is not mated or the problem such as quantity of information height.
Battery management system 14 and electric machine controller 15 are with respect to a plurality of ancillary systems or install 13 electric boosting steering system 132, anti-skid brake system 133, many information displays 134 and instrument 135 and contain much information, battery management system 14 is connected with entire car controller 12 separately by the second road CAN bus 102, electric machine controller 15 is connected with entire car controller 12 separately by Third Road CAN bus 103, can avoid largely because signal disturbs, erroneous frame increases, the too high whole CAN network service paralysis problem caused of load factor.Although for first via CAN bus 101, the node articulated on it is more, but a plurality of ancillary systems or install each system in 13 or device to send cycle of data-signal longer, the cycle that is the transmission data-signal of any one in electric boosting steering system 132, anti-skid brake system 133, many information displays 134 and instrument 135 is longer, be generally 500 milliseconds to 1000 milliseconds, therefore, data-signal can be avoided the peak hour and be gone, the load factor of first via CAN bus 101 is not high, not there will be under normal circumstances erroneous frame and latch up phenomenon.The second road CAN bus 102 and Third Road CAN bus 103 real-time demands are higher, and it is shorter that battery management system 14 and electric machine controller 15 send the cycle of data-signal, is generally 10 milliseconds to 100 milliseconds.
It should be noted that, although increase the quantity of CAN bus in whole-control system 10, can avoid signal to disturb, erroneous frame is many, the problem that load factor is too high, if but the quantity of CAN bus is increased too much, can cause the cost of whole whole-control system 10 higher, layout is too complicated, and in the present embodiment, limit in whole-control system 10 and adopt three road CAN buses 101, 102, 103, by three road CAN buses 101, 102, 103 connect entire car controller 12 and other system, device or controller, the quantity of rational deployment CAN bus and connection mode, effectively avoid the system problem because adopting a road or two-way CAN bus to cause.Simultaneously, avoid the quantity of CAN bus too much, verify by experiment again the quantity that the CAN bus rationally is set, realize the information sharing between each system, device or controller in whole-control system 10, control better and coordinate each system, device or controller, making the performance of pure electric automobile reach best.
The present invention also provides a kind of pure electric automobile, and it comprises above-mentioned whole-control system 10, and framework and the effect of whole-control system 10 do not repeat them here.
In sum, at pure electric automobile of the present invention and whole-control system thereof, at least have advantages of following:
1. in pure electric automobile of the present invention and whole-control system thereof, because a plurality of ancillary systems or device, battery management system and electric machine controller are connected with entire car controller by independent CAN bus respectively, by quantity and the connection mode of rational deployment CAN bus, can avoid largely because signal disturbs, erroneous frame increases, the too high whole CAN network service paralysis problem caused of load factor.
2. in an embodiment of pure electric automobile of the present invention and whole-control system thereof, each road CAN bus can be formulated different CAN high-voltage values and the CAN low voltage value is independent of each other according to the needs of self, therefore, can avoid the CAN high-voltage value between each system, device or controller and the CAN low voltage value is not mated or the problem such as quantity of information height.
3. in an embodiment of pure electric automobile of the present invention and whole-control system thereof, avoid the quantity of CAN bus too much, verify by experiment again the quantity that the CAN bus rationally is set, realize the information sharing between each system, device or controller in whole-control system, control better and coordinate each system, device or controller, making the performance of pure electric automobile reach best.
4. in an embodiment of pure electric automobile of the present invention and whole-control system thereof, the transfer rate of first via CAN bus is slightly less than the transfer rate of the second road CAN bus and Third Road CAN bus, this,, for what arrange according to the actual requirements, can prevent the wasting of resources, reduces production costs.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (10)

1. a whole-control system (10), it comprises entire car controller (12), a plurality of ancillary systems or device (13), battery management system (14) and electric machine controller (15), it is characterized in that, described a plurality of ancillary system or device (13) are connected with described entire car controller (12) by first via CAN bus (101), described battery management system (14) is connected with described entire car controller (12) by the second road CAN bus (102), described electric machine controller (15) is connected with described entire car controller (12) by Third Road CAN bus (103).
2. whole-control system as claimed in claim 1 (10) is characterized in that: described a plurality of ancillary systems or device (13) comprise electric boosting steering system (132), anti-skid brake system (133), many information displays (134) and instrument (135) at least wherein two.
3. whole-control system as claimed in claim 1 (10), it is characterized in that: described first via CAN bus (101), described the second road CAN bus (102) and described Third Road CAN bus (103) are high-speed CAN bus.
4. whole-control system as claimed in claim 3 (10), it is characterized in that: the transfer rate of described first via CAN bus (101), described the second road CAN bus (102) and described Third Road CAN bus (103) is more than or equal to per second 500 kilobits.
5. whole-control system as claimed in claim 4 (10), it is characterized in that: the transfer rate of described first via CAN bus (101) is less than the transfer rate of described the second road CAN bus (102) and described Third Road CAN bus (103).
6. whole-control system as claimed in claim 1 (10), it is characterized in that: described first via CAN bus (101), described the second road CAN bus (102) and described Third Road CAN bus (103) all adopt differential signal transmission.
7. whole-control system as claimed in claim 6 (10), it is characterized in that: described first via CAN bus (101) comprises first via CAN high tension cord (101a) and first via CAN primary cable (101b), described the second road CAN bus (102) comprises the second road CAN high tension cord (102a) and the second road CAN primary cable (102b), and described Third Road CAN bus (103) comprises Third Road CAN high tension cord (103a) and Third Road CAN primary cable (103b).
8. whole-control system as claimed in claim 1 (10) is characterized in that: the cycle that each system in described a plurality of ancillary systems or device (13) or device send data-signal is 500 milliseconds to 1000 milliseconds.
9. whole-control system as claimed in claim 1 (10) is characterized in that: the cycle that described battery management system (14) and described electric machine controller (15) send data-signal is 10 milliseconds to 100 milliseconds.
10. a pure electric automobile, is characterized in that, described pure electric automobile comprises the described whole-control system of any one in claim 1 to 9 (10).
CN2013103587380A 2013-08-16 2013-08-16 Pure electric vehicle and vehicle control system thereof Pending CN103448635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013103587380A CN103448635A (en) 2013-08-16 2013-08-16 Pure electric vehicle and vehicle control system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013103587380A CN103448635A (en) 2013-08-16 2013-08-16 Pure electric vehicle and vehicle control system thereof

Publications (1)

Publication Number Publication Date
CN103448635A true CN103448635A (en) 2013-12-18

Family

ID=49731615

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013103587380A Pending CN103448635A (en) 2013-08-16 2013-08-16 Pure electric vehicle and vehicle control system thereof

Country Status (1)

Country Link
CN (1) CN103448635A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109698780A (en) * 2019-01-24 2019-04-30 北京理工大学 A kind of automatic driving vehicle communication system
CN110203139A (en) * 2019-06-18 2019-09-06 浙江科技学院 A kind of electric car T-BOX system
CN110435568A (en) * 2019-08-19 2019-11-12 江西博能上饶客车有限公司 A kind of control system for electric motor coach vehicle
CN110808894A (en) * 2019-11-05 2020-02-18 东软睿驰汽车技术（沈阳）有限公司 Data transmission method and device based on CAN bus
US20210188098A1 (en) * 2018-05-15 2021-06-24 Wabco Gmbh System for an electrically driven vehicle, vehicle having same and method for same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5369584A (en) * 1989-12-08 1994-11-29 Mitsubishi Denki Kabushiki Kaisha Control apparatus for a vehicle
CN202208271U (en) * 2011-08-03 2012-05-02 北汽福田汽车股份有限公司 Control system for electric vehicle
CN202345427U (en) * 2011-11-09 2012-07-25 苏州海格新能源汽车电控系统科技有限公司 Power system of directly-driven pure electric bus
CN102935831A (en) * 2012-10-18 2013-02-20 上海迈拓汽车技术有限公司 Automobile CAN (controller area network) network control system
CN103010127A (en) * 2012-12-25 2013-04-03 北京理工大学 Networked control system for electric vehicle
CN202879395U (en) * 2012-10-25 2013-04-17 福建蓝海汽车技术有限公司 Controller area network (CAN) bus network system of electric vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5369584A (en) * 1989-12-08 1994-11-29 Mitsubishi Denki Kabushiki Kaisha Control apparatus for a vehicle
CN202208271U (en) * 2011-08-03 2012-05-02 北汽福田汽车股份有限公司 Control system for electric vehicle
CN202345427U (en) * 2011-11-09 2012-07-25 苏州海格新能源汽车电控系统科技有限公司 Power system of directly-driven pure electric bus
CN102935831A (en) * 2012-10-18 2013-02-20 上海迈拓汽车技术有限公司 Automobile CAN (controller area network) network control system
CN202879395U (en) * 2012-10-25 2013-04-17 福建蓝海汽车技术有限公司 Controller area network (CAN) bus network system of electric vehicle
CN103010127A (en) * 2012-12-25 2013-04-03 北京理工大学 Networked control system for electric vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210188098A1 (en) * 2018-05-15 2021-06-24 Wabco Gmbh System for an electrically driven vehicle, vehicle having same and method for same
US11691520B2 (en) * 2018-05-15 2023-07-04 Zf Cv Systems Europe Bv System for an electrically driven vehicle, vehicle having same and method for same
CN109698780A (en) * 2019-01-24 2019-04-30 北京理工大学 A kind of automatic driving vehicle communication system
CN109698780B (en) * 2019-01-24 2020-08-11 北京理工大学 Unmanned vehicle communication system
CN110203139A (en) * 2019-06-18 2019-09-06 浙江科技学院 A kind of electric car T-BOX system
CN110435568A (en) * 2019-08-19 2019-11-12 江西博能上饶客车有限公司 A kind of control system for electric motor coach vehicle
CN110808894A (en) * 2019-11-05 2020-02-18 东软睿驰汽车技术（沈阳）有限公司 Data transmission method and device based on CAN bus
CN110808894B (en) * 2019-11-05 2021-08-31 东软睿驰汽车技术（沈阳）有限公司 Data transmission method and device based on CAN bus

Similar Documents

Publication Publication Date Title
CN102390331B (en) Entire vehicle controller integrated with battery management system for pure electric automobile
CN103448635A (en) Pure electric vehicle and vehicle control system thereof
CN201457085U (en) CAN bus instrument assembly
CN102929274B (en) In-vehicle networking ground skewed redundant test macro, method and apparatus
WO2019102717A1 (en) Power supply system
JP2013238472A (en) Semiconductor device and voltage measurement device
CN102890501A (en) Testing system of vehicle control unit of pure electric sedan
CN103010127B (en) Electrical vehicle network networked control systems
CN201457263U (en) CAN bus whole controller assembly
KR100696889B1 (en) inner vehicle communication system and gateway
US20130116886A1 (en) Monitoring system and method for electric vehicle and electric vehicle supply equipment
KR102027922B1 (en) Cluster Fail Safe System and the Method Using Wire and Wireless Gateway
CN201685771U (en) Hybrid power control system with CAN bus
CN105182854B (en) A kind of charging pile distributed director
CN105974911A (en) Wifi-type EOL tool and diagnosis method utilizing same
CN104049202B (en) A kind of evaluation method of car electrics circuit parasite current
CN206884945U (en) A kind of GES control device
CN105644382B (en) Charging cable
CN202649792U (en) Engineering machinery electrical control system based on CAN-BUS
CN202966195U (en) Electric automobile networked control system
CN103692983A (en) Intelligent network control system module for electric automobile
JP6326350B2 (en) Module connection system
CN104238544A (en) Device for diagnosing the loss of a connection between an electronic control module and a ground
CN219096511U (en) Wall-mounted type super-charging pile for electric motorcycle
CN214267515U (en) Integrated intelligent automobile electronic wire harness

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20131218