CN206054710U - Pure electric automobile bi-motor automatic transmission control system - Google Patents

Abstract

This utility model pure electric automobile bi-motor automatic transmission control system, it is related to Control of Electric Vehicles field, the control unit that the control system includes, sensor detection signal module, switch selection signal module, perform control module, malfunction coefficient module, bi-motor module, speed change tank module, being capable of real-time control using high-speed digital video camera chip DSPTMS320F28335, additionally use bi-motor automatic shift control simultaneously, the switching of four kinds of drive patterns can be realized, improve the dynamic property and economy of electric automobile, using accelerator pedal aperture rate of change, speed, three parameter regularity of climbing angle of gradient size, work out fluid drive and become the control strategy of torsion and uphill starting, and solve the problems, such as that ramp is short of power and max. speed is relatively low.

Description

Pure electric automobile bi-motor automatic transmission control system

Technical field

This utility model is related to Control of Electric Vehicles field, more particularly to a kind of pure electric automobile bi-motor automatic transmission Control system.

Background technology

With the problem of energy shortage and environmental pollution it is increasingly serious, automobile of the pure electric automobile as energy-conserving and environment-protective, more More to be paid attention to by government and enterprise.And developing rapidly with automotive electronics, vehicle intellectualized is trend of the times.It is electronic Although manual gear of vehicle simple structure, low cost, exist operation inconvenience, max. speed it is relatively low, climbing dynamic property not Foot, particularly has in terms of uphill starting that dynamic property is not enough.

The content of the invention

The purpose of this utility model is to provide a kind of pure electric automobile bi-motor automatic transmission control system, can realize Cost is relatively low, smooth gear shifting, rationally gearshift, and can solve the problems, such as that ramp power is short of power and max. speed is relatively low.

The technical scheme that this utility model is adopted for achieving the above object is：A kind of pure electric automobile bi-motor fluid drive Device control system, it is characterised in that the control unit that includes, sensor detection signal module, switch selection signal module, perform Control module, gear and fault detector, bi-motor module, speed change tank module, described sensor detection signal module include Brake pedal position sensor C1 that is connected with control unit respectively, accelerator pedal position sensor C2, the angle of detection climbable gradient Degree sensor C3 and vehicle speed sensor C4；Described switch selection signal module include being connected with control unit respectively manual and Selecting switch K1 of automatic catch gear, driving mode switch K2；Described execution control module includes that the gearshift being connected with each other is held Row mechanism, high speed electromagnetic reversal valve, gear shifting actuating mechanism are connected with speed change tank module, and high speed electromagnetic reversal valve is double with control unit To connection, the input of bi-motor module is connected with control unit, and the outfan of bi-motor module is connected with speed change tank module, is become Fast tank module is connected with the drive axle of automobile again, and vehicle speed sensor C4 is also connected with the drive axle of automobile, described bi-motor mould Block includes mair motor and auxiliary motor, described gear shifting actuating mechanism include a clutch, No. two clutches, No. three clutches and Lock device.

This utility model adopt further technical scheme be：Described control unit include digital signal processing chip and from The CAP modules of band, ADC, I/O input modules, I modules of PWM, II modules of PWM, SCI modules, power circuit, reset circuit, Program storage space and data storage area, and the pulse shaper of periphery, analog signal conditioner circuit, I/O input adjusts Reason circuit, high speed electromagnetic commutation valve-driving circuit, motor-drive circuit, circuit of display driving, CAN interface circuit；Wherein car Fast sensor C4 is connected to pulse shaper, and pulse shaper connects the CAP modules of digital signal processing chip, and detection is climbed The angular transducer C3 of the gradient, accelerator pedal position sensor C2, brake pedal position sensor C1 are connected respectively to simulation letter Number modulate circuit, analog signal conditioner circuit connect the ADC of digital signal processing chip, manually and the selection of automatic catch is opened Close K1, driving mode switch K2 and connect I/O input modulate circuits, I/O input modulate circuit connection digital signal processor cores respectively The I/O input modules of piece；I modules of the PWM connection high speed electromagnetic commutation valve-driving circuit of digital signal processing chip, high speed electromagnetic Commutation valve-driving circuit connection high speed electromagnetic reversal valve, II modules of the PWM connection motor-drive circuit of digital signal processing chip, Motor-drive circuit connects bi-motor module, the SCI modules connection circuit of display driving of digital signal processing chip, display Drive circuit connects gear and fault detector, digital signal processing chip connection CAN interface circuit.

This utility model adopt further technical scheme be：Described digital signal processing chip is DSPTMS320F28335。

This utility model adopt further technical scheme be：Described speed change tank module includes fixed axis gear mechanism, OK Star gear mechanism, power transmission shaft, power output shaft and link gear；Dead axle transmission mechanism include a gear, No. two gears, No. three Gear, No. five gears and No. six gears, planetary gears include planetary gear, planet carrier and sun gear, and link gear is main Including No. four gears, gear rings, while No. three clutches and lock device are connected in link gear, wherein mair motor and auxiliary motor cloth The homonymy in system is put, mair motor is connected with a gear, and a gear is connected with a clutch driving plate, a clutch Clutch plate passes through the sun gear connection of power transmission shaft and planetary gears, and stand-by motor and No. two clutch driving plates connect, and two Number clutch driven plate and No. six gears connections, No. five gears are connected on power transmission shaft, and No. six gears and No. five gears are meshed； A number gear is meshed with No. two gears, and No. two gears pass through fixed conveyor axle and No. three gears connections, No. three gears and No. four Gear is meshed, and No. four gears are by the connection of No. three clutches, lock device and gear ring；Lock device one end and transmission housing connection, The lock device other end and gear ring connection.

This utility model pure electric automobile bi-motor automatic transmission control system has the advantages that：1st, this practicality The sensor detection signal module of new pure electric automobile bi-motor automatic transmission control system also includes detection climbable gradient Angular transducer, can detect the gradient of the climbing of electric automobile, be easy to the control in ramp；2nd, employ high speed electromagnetic commutation Valve is sensitiveer during execution；3rd, employ bi-motor automatic transmission structure, it is possible to achieve mair motor drives, auxiliary motor drives, Rotating speed coupling driving, torque coupling drive the switching of four kinds of patterns；4th, speed is employed, angle transducer signal, accelerator pedal are opened Spend the schedule of three parameters；5th, bi-motor automatic speed-variator electric control device uphill starting control method is employed, slope can be solved Road power is short of power problem；6th, bi-motor and speed change tank module are employed, can be according to different road conditions and the meaning of driver Figure carries out pattern switching, so as to not only meeting the requirement of economy but also meeting the requirement of dynamic property；7th, this utility model employs tool There is the DSPTMS320F28335 that computing is fast, operational precision is high, capacity is big, powerful, cost performance is high as microprocessor core Piece, realizes the real-time and high efficiency of control.

With reference to the accompanying drawings and examples this utility model pure electric automobile bi-motor automatic transmission control system is made Further instruction.

Description of the drawings

Fig. 1 is the integral module block diagram of this utility model pure electric automobile bi-motor automatic transmission control system；

Fig. 2 is the schematic block circuit diagram of this utility model pure electric automobile bi-motor automatic transmission control system；

Fig. 3 is the control unit hardware internal junction of this utility model pure electric automobile bi-motor automatic transmission control system Structure block diagram；

Fig. 4 is the bi-motor module and change speed gear box of this utility model pure electric automobile bi-motor automatic transmission control system The connecting structure figure of module；

Fig. 5 is the control main flow of the control method of this utility model pure electric automobile bi-motor automatic transmission control system Cheng Tu；

Fig. 6 be this utility model pure electric automobile bi-motor automatic transmission control system control method in uphill starting Control method flow chart；

Fig. 7 be this utility model pure electric automobile bi-motor automatic transmission control system control method in speed change and change Turn round control method flow chart；

Part drawing reference numeral explanation：

1- mair motors, 2- auxiliary motors, number gear of 3-, No. bis- gears of 4-, No. tri- gears of 5-, No. tri- clutches of 6-, 7- locks Only device, 8- planetary gears, 9- planet carriers, 10- power output shafts, number clutch of 11-, 12- power transmission shafts, No. bis- clutches of 13-, No. five gears of 14-, No. tetra- gears of 15-, No. six gears of 16-, 17- gear rings, 18- sun gears, 19- fixed conveyor axles, 20- gears Structure.

Specific embodiment

As shown in Figure 1 and Figure 2, this utility model pure electric automobile bi-motor automatic transmission control system, including control Unit 70, sensor detection signal module 71, switch selection signal module 72, execution control module 73, gear and malfunction coefficient Device 74, bi-motor module 75, speed change tank module 76, described sensor detection signal module 71 include respectively with control unit phase Brake pedal position sensor C1 even, accelerator pedal position sensor C2, the angular transducer C3 of detection climbable gradient and speed Sensor C4；Described switch selection signal module 72 includes the choosing of the manual and automatic catch gear being connected with control unit respectively Select switch K1, driving mode switch K2；Described execution control module 73 includes gear shifting actuating mechanism, the high speed electricity being connected with each other Magnetic reversal valve, gear shifting actuating mechanism are connected with speed change tank module, and high speed electromagnetic reversal valve is bi-directionally connected with control unit, bi-motor The input of module is connected with control unit 70, and the outfan of bi-motor module 75 is connected with speed change tank module 76, change speed gear box mould Block 76 is connected with the drive axle of automobile again, and vehicle speed sensor C4 is also connected with the drive axle of automobile, described bi-motor module 75 Including mair motor 1 and auxiliary motor 2, described gear shifting actuating mechanism includes the clutch of clutch 13, three of a clutch 11, two Device 6 and lock device 7.

Please also refer to shown in Fig. 3, described control unit includes digital signal processing chip and the CAP modules for carrying, ADC Module, I/O input modules, I modules of PWM, II modules of PWM, SCI modules, power circuit, reset circuit, program storage space and Data storage space, and the pulse shaper of periphery, analog signal conditioner circuit, I/O input modulate circuit, high speed electromagnetic Commutation valve-driving circuit, motor-drive circuit, circuit of display driving, CAN interface circuit；Described digital signal processing chip For DSPTMS320F28335.Wherein CAP modules are pulse capture modules, and wherein the PWM in II module of I modules of PWM and PWM is The abbreviation of Pulse Width Modulation, i.e. pulse width modulation.SCI modules are serial communication module, and ADC is mould Number converter module.Wherein vehicle speed sensor C4 is connected to pulse shaper, pulse shaper connection Digital Signal Processing The CAP modules of chip, the angular transducer C3 of detection climbable gradient, accelerator pedal position sensor C2, brake pedal position sensing Device C1 is connected respectively to analog signal conditioner circuit, and analog signal conditioner circuit connects the ADC of digital signal processing chip, Selecting switch K1 of manual and automatic catch, driving mode switch K2 connect I/O input modulate circuits respectively, and I/O input conditionings are electric Road connects the I/O input modules of digital signal processing chip；I modules of the PWM connection high speed electromagnetic of digital signal processing chip is changed To valve-driving circuit, high speed electromagnetic commutation valve-driving circuit connection high speed electromagnetic reversal valve, the PWM II of digital signal processing chip Module connects motor-drive circuit, motor-drive circuit connection bi-motor module 75, the SCI modules company of digital signal processing chip Meet circuit of display driving, circuit of display driving connection gear and fault detector 74, digital signal processing chip connection CAN Interface circuit, by CAN interface circuit, digital signal processing chip outputs signal to other microprocessors.

Please also refer to shown in Fig. 4, described speed change tank module 76 includes fixed axis gear mechanism, planetary gears, biography Moving axis 12, power output shaft 10 and link gear 20；Dead axle transmission mechanism includes the gear of gear 4, three of a gear 3, two 5th, No. five gears 14 and No. six gears 16, planetary gears include planetary gear 8, planet carrier 9 and sun gear 18, link gear Mainly include No. four gears 15, gear rings 17, while No. three clutches 6 and lock device 7 are connected in link gear, wherein mair motor 1 and auxiliary motor 2 be arranged in the homonymy of system, mair motor 1 is connected with a gear 3, and a gear 3 and a clutch 11 are actively Disk connects, and 11 clutch plate of clutch passes through power transmission shaft 12 and the sun gear 18 of planetary gears connects, 2 He of stand-by motor No. two 13 driving disc spacing pressing of clutch connections, No. two 13 clutch plates of clutch and No. six gears 16 connect, and No. five gears 14 are connected to biography On moving axis 12, No. six gears 16 and No. five gears 14 are meshed；A number gear 3 is meshed with No. two gears 4, and No. two gears 4 lead to Cross fixed conveyor axle 19 and No. three gears 5 connect, No. three gears 5 and No. four gears 15 are meshed, No. four gears 15 pass through No. three Clutch 6, lock device 7 and gear ring 17 connect；7 one end of lock device and transmission housing connection, 7 other end of lock device and gear ring 17 connect Connect.

Four kinds of mode of operations of pure electric automobile bi-motor automatic transmission control system, main job control part is A number clutch 6 of clutch 13, three of clutch 11, two and lock device 7, can be real by controlling these gear shifting actuating mechanisms The switching of existing four kinds of drive patterns, the following detailed description of four kinds of drive patterns.When a clutch 11 and lock device 7 are in combination State, 13, No. three clutches 6 of No. two clutches are respectively at released state, and mair motor 1 drives 11 driving disc spacing pressing of clutch, A number 11 clutch plate drive belt driven input shaft 12 of clutch, input shaft drive sun gear 18, and at this moment gear ring 17 is fixed, planet carrier 9 As power output, now based on motor drive mode.When No. three clutches 6 and a clutch 11 are respectively at separation shape State, lock device 7 and No. two clutches 13 are respectively at bonding state, and auxiliary motor 2 drives No. two 13 driving disc spacing pressings of clutch, No. two from 13 clutch plate of clutch band nutating gear 16, travelling gear 16 and travelling gear 14 are engaged, travelling gear 14 with driven input shaft 12, Input shaft 12 drives sun gear 18, and gear ring 17 fixes, planet carrier 9 as power output, now supplemented by motor drive mode.When three Number clutch 6 is in released state, and clutch 11, lock device 7 and No. two clutches 13 are respectively at bonding state, main electricity Machine 1 drives 11 driving disc spacing pressing of clutch, 11 clutch plate of a clutch band driven input shaft 12, auxiliary motor 2 to drive No. two clutches 13 driving disc spacing pressing of device, No. two 13 clutch plate of clutch band moving gears 16 and travelling gear 14 are engaged, and travelling gear 14 is with driven input shaft 12, input shaft 12 drives 18 liang of motor torques of sun gear to couple collective effect in sun gear 18,17 fixed carrier of gear ring, 9 conduct Torque coupling drives power output.When a clutch 11 and lock device 7 are respectively at released state, No. three clutches 6 and two Number clutch 13 drives a gear 3, a gear 3 and No. two gears 4 to nibble in bonding state, mair motor 1 is respectively at Close, No. two gears 4 pass through fixing axle 19 and No. three gears 5 are connected firmly, and No. three gears 5 and No. four gears 15 are engaged, No. three gears 5 lead to Cross link gear and drive gear ring 17, auxiliary motor 2 drives sun gear 18, by planetary gears, according to the characteristics of planetary gear Planet carrier 9 is exported as rotating speed coupling driving.

For four kinds of drive patterns of simple and clear understanding, four kinds of drive patterns are listed in following table one.

Table one：

Using the control method of above-mentioned pure electric automobile bi-motor automatic transmission control system, its step is as follows（Please With reference to shown in Fig. 5）：

(1) electricity on automobile, judges whether system initialization is successful, is to be directly entered next step, and no judgement initialization is No time-out, it is overtime to show initialization failure, have not timed out then continuation and judge whether system initialization is successful；

(2) read the signal of sensor detection signal module and switch selection signal module；

(3) determine whether automatic transmission, be to be directly entered next step, otherwise into manual driving, return program afterwards；

(4) in judging whether vehicle travels, it is to be directly entered next step, is otherwise risen according to automatic transmission control strategy of start process Step, enters back into next step；

(5) carry out speed change and become turning round according to automatic transmission Shifting；

(6) detect whether each blocks current voltage is normal, is return program, returns above-mentioned steps（Two）, otherwise show The system failure.

In above-mentioned steps（Four）During middle automatic transmission starting control, the control method of uphill starting is comprised the following steps（Please be same When with reference to shown in Fig. 6）：

（a）Stationary vehicle, reads the signal of brake pedal position sensor, determines whether brake signal, and nothing is directly entered Next step, has, and continues to return the signal for re-reading brake pedal position sensor, then determines whether brake signal, until not having There is brake signal；

（b）According to the angle value of institute's reading angular sensor, as ramp i>15% to go up a slope, the i when angle direction is contrary> 15% is descending, when the size of i is to be set to level road mark less than 15%, determines whether to go up a slope, is to be directly entered next step, otherwise Determine whether descending, be that descending then controls automatic transmission in torque coupling pattern, level of torque is 0, proceeds to below step （f）, it is not that descending is then set to level road mark, is also transferred to below step（f）；

（c）When being to go up a slope, the gradient is judged according to the signal message that angular transducer is collected, conducted oneself with dignity then in conjunction with vehicle body Calculate rolling resistance and the moment of torsion for probably needing：

（d）Control unit sends control signal, gives high speed electromagnetic reversal valve, and high speed electromagnetic reversal valve is by controlling hydraulic pressure Oil, controls No. three clutches in released state, and clutch, lock device and No. two clutches are respectively at and combine shape State, bi-motor are in torque coupling drive pattern；

（e）General moment of torsion required for providing motor is calculated according to upper step, rotating speed n is then judged>=0, it is to be directly entered down One step, otherwise control unit send control signal suitably increases motor torque to II modules of PWM, calculates further according to upper step and provides electricity General moment of torsion required for machine, then proceedes to judge rotating speed n>=0, Zhi Daoshi；

（f）Judge in the nominal time, whether there is accelerator pedal signal, be directly entered next step, without then cancellation starting moment of torsion；

（g）According to accelerator pedal signal, corresponding motor torque command is given.

Speed change is carried out in above-mentioned steps (five) and becomes the control method turned round comprising the following steps（Please also refer to Fig. 7 institutes Show）：

（A）Sensor detection signal module and switch selection signal module by signal are read, judges whether to need speed change or change Turn round, be to be directly entered next step, otherwise continue this step；

（B）Judge whether it is torque coupling drive pattern, be to be directly entered next step, otherwise according to accelerator pedal aperture with And change, current vehicle speed, and allow motor to be operated in the principle of high efficient district as far as possible, judge whether to need single motor drive mode, It is then to enter below step（E）, otherwise control unit sends control signal, gives high speed electromagnetic reversal valve, high speed electromagnetic reversal valve By controlling hydraulic oil, control a clutch and lock device is respectively at released state, No. three clutches and No. two clutches In bonding state is respectively at, bi-motor is in rotating speed coupling driving pattern to device, afterwards into below step（G）；

（C）Control unit sends control signal, gives high speed electromagnetic reversal valve, and high speed electromagnetic reversal valve is by controlling hydraulic pressure Oil, controls No. three clutches in released state, and clutch, lock device and No. two clutches are respectively at and combine shape State, bi-motor are in torque coupling pattern；

（D）Control unit sends letter to II modules of PWM according to accelerator pedal aperture and rate of change, the gradient, current vehicle speed Number, bi-motor is controlled, is turned round so as to realizing electric automobile gear and becoming, is gone to final step task afterwards and terminate；

（ E）Judge whether to need mair motor to drive, be to be directly entered next step, otherwise control unit sends control signal, No. three clutches and a clutch point are controlled by controlling hydraulic oil to high speed electromagnetic reversal valve, high speed electromagnetic reversal valve Other places are respectively at bonding state in released state, lock device and No. two clutches, and electric automobile is in auxiliary motor drive pattern, Below step is entered afterwards（G）；

（F）Control unit sends control signal, gives high speed electromagnetic reversal valve, high speed electromagnetic reversal valve by control No. one from Clutch and lock device are in bonding state, and No. two clutches, No. three clutches are respectively at released state, and electric automobile is in master Motor drive mode；

（G）Control unit sends signal to II modules of PWM according to accelerator pedal aperture and rate of change, current vehicle speed, comes Controlled motor, turns round so as to realizing electric automobile gear and becoming, and task terminates.

Claims (4)

1. a kind of pure electric automobile bi-motor automatic transmission control system, it is characterised in that the control unit for including（70）, pass Sensor detection signal module（71）, switch selection signal module（72）, perform control module（73）, gear and fault detector （74）, bi-motor module（75）, speed change tank module（76）, described sensor detection signal module（71）Including respectively with control Connected brake pedal position sensor C1 of unit, accelerator pedal position sensor C2, the angular transducer C3 of detection climbable gradient With vehicle speed sensor C4；Described switch selection signal module（72）Including the manual and automatic catch being connected with control unit respectively Selecting switch K1 of gear, driving mode switch K2；Described execution control module（73）Perform including the gearshift being connected with each other Mechanism, high speed electromagnetic reversal valve, gear shifting actuating mechanism are connected with speed change tank module, and high speed electromagnetic reversal valve is two-way with control unit Connection, the input and control unit of bi-motor module（70）Connection, bi-motor module（75）Outfan and speed change tank module （76）Connection, speed change tank module（76）It is connected with the drive axle of automobile again, vehicle speed sensor C4 is also connected with the drive axle of automobile, Described bi-motor module（75）Including mair motor（1）And auxiliary motor（2）, described gear shifting actuating mechanism includes a clutch （11）, No. two clutches（13）, No. three clutches（6）And lock device（7）.

2. pure electric automobile bi-motor automatic transmission control system as claimed in claim 1, it is characterised in that the control Unit includes digital signal processing chip and the CAP modules for carrying, ADC, I/O input modules, I modules of PWM, II moulds of PWM Block, SCI modules, power circuit, reset circuit, program storage space and data storage area, and the shaping pulse electricity of periphery Road, analog signal conditioner circuit, I/O input modulate circuits, high speed electromagnetic commutation valve-driving circuit, motor-drive circuit, display Device drive circuit, CAN interface circuit；Wherein vehicle speed sensor C4 is connected to pulse shaper, pulse shaper connection number The CAP modules of word signal processing chip, the angular transducer C3 of detection climbable gradient, accelerator pedal position sensor C2, braking are stepped on Board position sensor C1 is connected respectively to analog signal conditioner circuit, analog signal conditioner circuit connection digital signal processing chip ADC, manually and selecting switch K1 of automatic catch, driving mode switch K2 connect I/O input modulate circuits, I/O respectively Input modulate circuit connects the I/O input modules of digital signal processing chip；I modules of the PWM connection of digital signal processing chip High speed electromagnetic commutation valve-driving circuit, high speed electromagnetic commutation valve-driving circuit connection high speed electromagnetic reversal valve, Digital Signal Processing II modules of the PWM connection motor-drive circuit of chip, motor-drive circuit connection bi-motor module, digital signal processing chip SCI modules connect circuit of display driving, circuit of display driving connection gear and fault detector（74）, Digital Signal Processing Chip connects CAN interface circuit.

3. pure electric automobile bi-motor automatic transmission control system as claimed in claim 2, it is characterised in that described number Word signal processing chip is DSPTMS320F28335.

4. pure electric automobile bi-motor automatic transmission control system as claimed in claim 1, it is characterised in that described change Fast tank module（76）Including fixed axis gear mechanism, planetary gears, power transmission shaft（12）, power output shaft（10）And link gear （20）；Dead axle transmission mechanism includes a gear（3）, No. two gears（4）, No. three gears（5）, No. five gears（14）With No. six teeth Wheel（16）, planetary gears includes planetary gear（8）, planet carrier（9）And sun gear（18）, link gear is mainly including No. four Gear（15）, gear ring（17）, while No. three clutches（6）And lock device（7）It is connected in link gear, wherein mair motor（1） And auxiliary motor（2）It is arranged in the homonymy of system, mair motor（1）With a gear（3）Connection, a gear（3）With a clutch Device（11）Driving disc spacing pressing connects, a clutch（11）Clutch plate passes through power transmission shaft（12）With the sun gear of planetary gears（18） Connection, stand-by motor（2）With No. two clutches（13）Driving disc spacing pressing connects, No. two clutches（13）Clutch plate and No. six gears（16） Connection, No. five gears（14）It is connected to power transmission shaft（12）On, No. six gears（16）With No. five gears（14）It is meshed；A number gear （3）With No. two gears（4）It is meshed, No. two gears（4）By fixed conveyor axle（19）With No. three gears（5）Connection, No. three teeth Wheel（5）With No. four gears（15）It is meshed, No. four gears（15）By No. three clutches（6）, lock device（7）And gear ring（17）Even Connect；Lock device（7）One end and transmission housing connection, lock device（7）The other end and gear ring（17）Connection.