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Judging the application direction of small flat wire motor from SM 4x4 driverless technology verification vehicle

2022-04-29 05:43:25Wechat car

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2021 Earlier this year , Held in the hinterland of Inner Mongolia Desert “ Crossing over dangerous obstacles 2020” Ground unmanned equipment challenge . This event is relatively “ Crossing over dangerous obstacles 201X” Series of events , There are many kinds of modern unmanned combat scenarios , Integrated photoelectric reconnaissance with greater power consumption and unmanned driving / Unmanned combat wheeled equipment .
Compared with the past “ Crossing over dangerous obstacles 20XX” event , The proportion of wheel shoe equipment with full electric drive or increased program oil electric hybrid drive has increased significantly . In particular, the wheel shoe equipment using the incremental oil electric hybrid drive scheme shows strong trafficability , Surge in power consumption and perception of the environment / The power supply capacity of photoelectric reconnaissance upper module is very significant .
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The evaluation team of new energy information analysis network will participate in “ Crossing over dangerous obstacles 2020” Ground unmanned equipment challenge , Based on Jialing Group CSV/P11 Type sm 4x4 Focus on global high-speed motor vehicles and modified driverless technology verification vehicles , And change clothes PHEV Study and judge the application direction of small flat wire motor by power system .
remarks : Final vehicle technical status , By manufacturer 、 The information released by the improver shall prevail
1、 Old track equipment power assembly “ Vertical to horizontal ”, Replace the incremental oil electric hybrid drive system , Match the technical advantages of flat wire motor for large-scale and high-power power power generation :
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stay 2020 year 12 Issued in the monthly magazine 《 from 63 Research and judge the application direction of flat wire motor 》 In the article “ The adaptive incremental program oil electric hybrid system is predicted , change “1 Slot 8 Line ” Flat wire winding motor , Achieve a higher level of covert mobility tactical advantage , And support the later installation of operations with greater power consumption / The possibility of installing environment aware modules .
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The picture above shows 63 Extended range hybrid unmanned armored technology verification vehicle rear power cabin , Close up of details of each subsystem .
White arrow : Transverse in-line four cylinder 2.8T The diesel engine
Blue arrow : A generator directly associated with a diesel engine
The green arrow : Generator control module
It should be noted that (1), The front-end longitudinal traditional powertrain of the prototype is modified to the rear-end transverse extended range hybrid assembly , The size and dead weight of the generator associated with the engine can be set larger , With Get higher generation power .
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“ Vertical to horizontal ” after , There is more space to deploy “1 Slot 8/10 Line ” Flat wire winding technology generator , So that the maximum generating power can be extended to 200-300 kw ! It highlights the technical and tactical advantages of high mobility of the vehicle after electric transformation .
2、 The new wheeled equipment is equipped with an additional program oil electric hybrid drive system as standard , Calibrate the technical advantages of medium power flat wire motor for medium-sized power generation :
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stay 2021 year 10 Issued in the monthly magazine 《 exclusive : Extended range hybrid ? Study and judge 2 generation 6 Technical and tactical status of wheel driven mountain car family 》 In the article ,“ Anticipation ” The standard additional program oil electric hybrid system , Replace the flat wire winding to generate balanced generating power and driving power and start the generator , The obtained high mobility and servo rich investigation 、 Electronics 、 fire 、 Tactical advantages of the upper module of the supply function .
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Due to the adoption of forward development model platform ,2 generation 6 The wheel driven SM can easily arrange the diesel engine - Generator and torque distribution module . however , The overall dimensions are strictly limited , Study on the technical and tactical advantages of light and high mobility 2 generation 6 The space of the wheel driven SM power cabin is still very limited .
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It should be noted that (2), Shaped 2 generation 6 The standard middle rear power assembly and transverse torque distribution module of the wheel driven SM family , The configured motor can keep the diameter and length in a balanced state . And application “1 Slot 6 Line ” Medium power generator with flat wire winding technology , The maximum generating power can be maintained at 40-60 kw , It can better meet the balanced demand of this forward development light wheeled vehicle for mobility and power generation .
3、 Sm 4x4 Driverless technology verification vehicle longitudinal powertrain , The original position is equipped with small power generation / Technical advantages of flat wire motor for driving :
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stay 2021 At the Zhuhai Air Show in , Sm 4x4 The whole area high-speed motor vehicles waded 、 Speed up 、 Dynamic display such as climbing . This Bobcat 4x4 Global high vehicle carrying capacity 1 Four in-line cylinders 1.3 Displacement turbocharged diesel engine 、 simulation 4 Forward speed CVT The transmission , adapter 1 Taiwan electric control time-sharing 4WD system is equipped with rear differential lock .
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Sm 4x4 The whole area high-speed motor vehicle adopts front and rear double A Independent suspension + Disconnect the open drive axle , In order to cope with complex road conditions and have better trafficability , Set the long stroke coil spring .
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The picture above shows sm 4x4 The driverless technology verifies the lateral close-up of the latest state of the vehicle . Visible overhead 3 Group solid state lidar ( red \ yellow \ The blue arrow indicates ),2 Group Beidou navigation system receiving antenna ( The white arrow indicates ).
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The picture above is for “ Crossing over dangerous obstacles 2020” The bobcat race 4x4 Close up of the rear of the driverless technology verification vehicle . Visible overhead 1 Group solid state lidar ( The white arrow indicates )、2 Group Beidou navigation system receiving antenna ( The green arrow indicates )、 It is set at the front, rear, left and right of the car body 4 Group white light video acquisition system ( The yellow arrow indicates )、 Front and rear setting of vehicle body 2 Group millimeter wave radar .
The red arrow : Sm 4x4 Driverless technology verifies the rear disconnected drive axle of the vehicle
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It should be noted that (3), Sm 4x4 The driverless technology verification vehicle retains all the power of the prototype vehicle 、 Transmission 、 4WD and suspension system . The electric control time differential lock of the prototype is matched with the rear four-wheel drive , It can ensure that the trafficability of the vehicle is in the strongest state . And driving on paved roads , Rear wheel drive mode can be selected .
The red arrow : Electronic 4WD switch
Blue arrow : Rear differential lock switch
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It should be noted that (4), As a military unmanned technology verification vehicle , Meet the requirements of multiple groups of laser radars installed later 、 Millimeter wave radar 、 Video capture system 、 Power supply of on-board communication system and high and low voltage control system , All rely on the power generation at the vehicle end / Power storage system . However , Sm 4x4 Global high vehicle adaptation 12 V low voltage power system , It can only meet the requirements of vehicle starting and low-power external discharge .
In order to meet the normal use needs of the environment aware top with a significant increase in power consumption , The vehicle must be equipped with a high-power power generation system .
In order to meet the needs of military driverless technology and evolved by wire chassis , All electric drive must be improved for the vehicle .
It should be noted that (5), On the basis of traditional power, it can also evolve into a chassis controlled by wire . But with PHEV\EREV\EV Drive technology improved by wire chassis , With more efficient computing / feedback / Execution efficiency , And the operation accuracy is more accurate .
remarks :2020 Civil chassis by wire technology after , With EREV\EV Based on driver architecture , Full electric acceleration 、 Full electric braking and high-precision full electric steering function .
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Sm 4x4 Global high vehicle in longitudinal engine and CVT Between , Series connection 1 A generator / The relative position of the drive motor is the same as that of the electric motor / Flow chart of torque distribution strategy .
Red area : A longitudinal engine that retains the status of the original vehicle ;
Green area : Post installed power generation / Drive motor ;
Yellow area : Keep the original car CVT;
The blue area : Electricity generated by / The electric quantity output by the drive motor , It is used to drive the environment aware upper module ;
White area : Electricity generated by / The electric quantity output by the drive motor , Used for power battery system storage ;
The red arrow : Engine and power generation / Drive motor coordination , The output power passes through CVT, Output torque for 4WD transfer case ;
Yellow arrow : After the secondary distribution of the transfer case , Transmit torque to the front and rear drive axles
Sm 4x4 Driverless technology verification vehicle , Such as the longitudinal engine in the original vehicle state and CVT Between ,“ Insert ”1 A generator / Drive the motor and install the power battery system , It takes into account PHEV The high performance of the model and the trafficability of traditional off-road vehicles .
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According to SM 4x4 The longitudinal engine used by high-speed motor vehicles in the whole area -CVT The transmission - Comparison of front and rear axle and four-wheel drive splitter , In the longitudinal engine and CVT The transmission is connected in series 400V The motor with both power generation and driving requirements can achieve the following functions :
#1、 In idle power generation mode , All power from the engine is converted into electricity , Or for environmental perception of installed power demand 、 Or store the power to the power battery ;
#2、 In driving power generation mode , Match the appropriate electronic control technology for power diversion , On the basis of driving power generation, adjust the installed power consumption of environmental perception 、 Power consumption of drive system 、 Power battery storage ratio ;
#3、 Full power output in hybrid drive mode , Cooperate with the transfer case to evenly distribute the maximum torque to the front and rear drive axles , Greatly improve the vehicle trafficability ;
#4、 In all electric drive mode , Still can be in 2 Drive and 4 Switch between drive modes , Achieve the tactical demand for concealing its own thermal radiation signal in a quiet environment ;
Image Yes, Sm 4x4 Class high motor vehicles , Longitudinal power 、 The transmission and four-wheel drive systems are strictly limited to a certain range . In engine and transmission ( The transmission ) A group with the same diameter as the power take-off end of the engine is installed between them , But highly compressed power generation / Flat wire motor for driving , Make the whole vehicle and top loaded with more technical and tactical advantages , Is the only way to improve .
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In order to retain the power of the original car to the greatest extent 、 Drive and 4WD system requirements , Between engine and transmission “ Insert ”1 platform 270 series -PHEV A dedicated P2 The motor is very suitable . Adopt centralized winding process , The maximum output power can be in 45-85 KW setting 、 The maximum output torque can be 180-250 Torque setting , about AT\CVT\DCT The transmission has good compatibility .
When the motor with flat wire winding technology is used for axial drive of longitudinal power system , The improvement of traditional power driven strip vehicle is minimal , Retain the original trafficability and reliability settings to the greatest extent , The risk after modification is small 、 Less investment and cost .
#1, The motor based on flat wire winding technology is used for ISG When starting the all-in-one generator , It can fully reduce the size of motor stator end , Shorten the length of the whole machine , It is convenient to be placed horizontally in the front and rear power cabin of the vehicle , Improved space utilization , It is convenient to carry larger upper modules .
#2,  The motor based on flat wire winding technology is used for ISG When starting the all-in-one generator , Relative to circular wire winding motors of the same size , More efficient power generation , Meet the power demand of the upper module with greater power consumption .
#3,  The motor based on flat wire winding technology is used for wheel side drive , Compared with the traditional power multi drive axle vehicle , Remove the main drive shaft 、 Transfer case 、 Differential and drive axle shaft , Free up a lot of space or reduce self weight to increase mobility , Or used to carry upper modules with larger dimensions .
#4, The structure of flat wire winding motor made of copper is quite different from that of conventional motor , The internal heat distribution is more uniform , It can be overloaded in large proportion , Increasing continuous power and peak power are important parameters . The motor with flat wire winding technology is fully applied to the equipment of extended range hybrid wheel shoe , It can reduce the demand for cooling system , Better integrate into the thermal management control system at the vehicle level , Directly improve the efficiency of the whole vehicle , Or increase the range of maneuvers 、 Or increase the combat radius .
4、 Power generation based on flat wire winding technology / Drive motor and control system , The era of comprehensive application of military wheel shoe equipment improvement and new equipment being developed has come :
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stay “ Crossing over dangerous obstacles 2014” In the ground unmanned equipment challenge , The earliest generation of Bobcats 4x4 Driverless technology verification vehicle ( Red arrow ), With the first 2 generation 63 Driverless technology verification vehicle ( The yellow arrow indicates ), Adopt a certain type of 4x4 The medium-sized safety vehicle is an unmanned verification vehicle with vehicle , Complete all events .
here , These three ultra light wheeled 、 The medium wheeled and medium tracked driverless technology verification vehicle has not made any electric improvement , Or the mechanical chassis by wire technology .
Image stay “ Crossing over dangerous obstacles 2016” In the ground unmanned equipment challenge , The first 2 Generation Bobcat 4x4 Driverless technology validates the expansion of the environmental awareness module of the vehicle , Better 360 Wide range lidar and relatively perfect mechanical chassis by wire technology .
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stay “ Crossing over dangerous obstacles 2018” In the ground unmanned equipment challenge , More driverless equipment using incremental oil electric hybrid drive technology and all electric drive technology , Even more unmanned vehicles with multiple firepower projection modules / Unmanned combat equipment also appeared in the event queue . The first 3 Generation Bobcat 4x4 Driverless technology verification vehicle ( The white arrow indicates ), In order to meet the application of more sensing equipment , The efficiency of driving power generation is strengthened .
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stay “ Crossing over dangerous obstacles 2020” In the ground unmanned equipment challenge , The latest Bobcat 4x4 The driverless technology verification vehicle is based on more accurate by wire chassis technology , Reached a bike leader - Other vehicles are connected in real-time formation - The tactical capability of unmanned driving to the designated destination .
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you 're right ! By different power / Size: flat wire winding motor centered wire control chassis , To satisfy the 500 The power demand of military wheel shoes on V voltage platform is at the same time , Electric acceleration 、 Electric brake 、 Technical advantages of high-precision electric steering , Provide comprehensive technical support for the achievement of tactical capability of unmanned combat .
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Some Chinese local flat wire motor suppliers are already in 2022 year , Batch manufacturing of longitudinal for wheel shoe equipment platform adaptation \ Transverse powertrain ISG Inspire all-in-one machine 、 Inter shaft power generation / Drive motor 、 Inter axle drive motor and wheel drive motor , And gradually loading and application .
Research and development of a full range of flat wire motors 、 performance 、 Trial production and mass production , It no longer bothers vehicle manufacturers . The complete vehicle manufacturer can choose the series of models in use according to the flat wire motor supplier , seek most Close to the model you need and improve it , In the shortest period 、 Face the least risk and use the least cost , Launch electric equipment with excellent performance .
Our journey is the sea of stars :
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The latest science and technology are often used in military equipment first . Use electric technology to improve the efficiency of military equipment drive system and increase the tactical capability with more practical significance . In China, the development of the whole new energy industry chain is only 8 Year time , The civil electric drive 、 The power battery and all high-voltage electronic control systems have completed all independent research and development and mass production capacity . systematic 、 Mature civil flat wire electric drive system , It can be used in the field of military equipment in reverse .
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Just when the civilian car stops at 350-400 Volt voltage platform 、 Military wheel shoe equipment enters 500 The era of volt platform , China's local professional suppliers of flat wire motors have submitted to 800 V high voltage platform into . It can be mass produced 13000-18000 turn / branch 、 Maximum output 160 kw -500 kw , in the light of EV\HEV\PHEV\EREV Oil cooled flat wire electric drive system with various electric drive forms .

Just when other motor manufacturers fall into investment - project - The trial production - batch production - The dead cycle of cost , Some excellent manufacturers have come up with systematic products and application cases , At the first time, we can improve and mass produce the latest model according to the demand , Greatly reduce the early development cost , Ensure that new technologies can be applied more widely .
Produced by the evaluation team of new energy information analysis network

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