阅读说明：本技术 一种新型乘用车电子换挡系统 (Novel electronic gear shifting system for passenger vehicle ) 是由 乔石军 张文军 于 2021-01-07 设计创作，主要内容包括：一种新型乘用车电子换挡系统,涉及汽车换挡技术领域,解决现有乘用车电子换挡器在行车中档位不一致,造成驾驶不安全以及不易操作等问题,本发明所述的乘用车电子换挡系统,解决用户在行车中档位不一致造成驾驶不安全、不易操作问题,本发明包括通过CAN总线通讯的换挡模块、整车控制器、驱动电机和电子稳定性系统控制器；所述换挡模块包括电子换挡控制器、档位指示灯和P挡电磁阀；本发明所述的乘用车电子换挡系统,解决用户在行车中档位不一致造成驾驶不安全、不易操作问题,通过在VCU、ESC、GSM和组合仪表之间设计档位切换的控制系统和方法,可有效提高乘用车驾驶的安全性、舒适性和智能化。(A novel electronic gear shifting system for a passenger vehicle relates to the technical field of vehicle gear shifting, and solves the problems of unsafe driving and difficult operation caused by inconsistent gears of the conventional electronic gear shifter for the passenger vehicle in driving; the gear shifting module comprises an electronic gear shifting controller, a gear indicator lamp and a P-gear electromagnetic valve; the electronic gear shifting system for the passenger vehicle solves the problems of unsafe driving and difficult operation caused by inconsistent gears of users in driving, and can effectively improve the driving safety, comfort and intellectualization of the passenger vehicle by designing the control system and the method for gear shifting among the VCU, the ESC, the GSM and the combination instrument.)

1. The utility model provides a novel passenger car electron shift system, characterized by: the system comprises a gear shifting module, a vehicle control unit, a driving motor and an electronic stability system controller which are communicated through a CAN bus; the gear shifting module comprises an electronic gear shifting controller, a gear indicator lamp and a P-gear electromagnetic valve;

the electronic gear shifting controller is used for sending a gear request signal to the vehicle control unit, and simultaneously controlling a gear indicator lamp to be on or flash normally and controlling a P-gear electromagnetic valve to be opened or closed;

the gear indicator is used for displaying the current gear state; the P gear electromagnetic valve is used for locking a P gear;

the vehicle control unit is used for receiving the gear request signal, sending a logic gear signal to the electronic gear-shifting controller according to the current driving state of the vehicle, and sending a brake signal and a brake validity signal to the electronic gear-shifting controller according to the received brake pedal state signal; sending an alarm signal to the combination instrument, and sending a motor torque instruction signal to the driving motor to control the driving motor to turn;

the driving motor is used for receiving a motor torque instruction signal and outputting power;

the electronic stability system controller is used for receiving wheel speed signals and sending vehicle speed signals to the whole vehicle controller and the electronic gear shifting controller through calculation;

the combination meter is used for receiving a gear request signal of the electronic gear shifting controller, displaying a physical gear and an alarm signal sent by the whole vehicle controller, reminding a user that the current physical gear is inconsistent with the logical gear through characters, and guiding the user to correctly operate and shift gears.

2. The novel electronic shift system for passenger cars of claim 1, characterized in that: the electronic gear shifting controller comprises any one of a hand-held gear type, a button type or a knob type; the electronic gear shifter at least comprises a parking gear P, a reverse gear R, a neutral gear N and a driving gear D.

3. The novel electronic shift system for passenger cars of claim 1, characterized in that: the gear indicator lamp comprises a P gear indicator lamp, an R gear indicator lamp, an N gear indicator lamp and a D gear indicator lamp.

4. The novel electronic shift system for passenger cars of claim 1, characterized in that: the electronic gear shifting controller sends a gear request signal through the CAN bus and receives a logic gear signal of the whole vehicle controller, and controls the gear indicator lamp to be normally on or twinkle by judging whether the two signals are consistent.

5. The novel electronic shift system for passenger cars of claim 4, characterized in that:

when the gear request signal is inconsistent with the logic gear signal, the gear indicator lamp flickers;

when the gear request signal is consistent with the logic gear signal, the gear indicator lamp is always on.

6. The novel electronic shift system for passenger cars of claim 1, characterized in that: the electronic gear shifting controller receives a brake signal, a brake validity signal and a vehicle speed signal sent by the electronic stability system controller of the whole vehicle controller, and controls the P-gear electromagnetic valve to be locked or unlocked according to states of the three signals, so that whether the electronic gear shifting gear can be switched or not.

7. The novel electronic passenger vehicle shifting system of claim 6, wherein:

when the brake signal VCU _ BrakePedalValvalue is equal to 1 and the brake validity signal VCU _ BrakePedalValidFlag is equal to 1, the P-gear electromagnetic valve is unlocked, and the electronic gear shifting is switched;

when the brake signal VCU _ BrakePedalValue is equal to 0 or the brake validity signal VCU _ BrakePedalValidFlag is equal to 0, the P-gear electromagnetic valve is locked, and the electronic gear shifting position cannot be switched;

when the vehicle speed signal ESC _ vehicle is larger than or equal to a threshold value A, the P-gear electromagnetic valve is unlocked, and if the vehicle speed signal ESC _ vehicle is smaller than the threshold value A, the P-gear electromagnetic valve is locked; the step is used for allowing the gear to be switched to other gears from the P gear after the gear enters the P gear when the vehicle speed signal is larger than or equal to the threshold A under the vehicle running state, namely the electronic gear shifting gear can be switched.

8. The novel electronic passenger vehicle shifting system of claim 7, wherein: the threshold value A is a calibrated value of 3 km/h.

9. The novel electronic shift system for passenger cars of claim 1, characterized in that: the vehicle control unit receives a gear request signal through a CAN bus, receives a brake pedal signal through a signal control line, and sends a logic gear signal, an alarm signal, a motor torque instruction, a brake signal and a brake validity signal according to the current driving state;

the motor torque command signal controls the motor to turn, wherein forward rotation corresponds to a D gear of a driving gear, reverse rotation corresponds to an R gear of a reverse gear, and idling corresponds to a P gear of a parking gear and an N gear of a neutral gear;

when the brake pedal is depressed, the brake signal VCU _ brakepadalvalue is 1, if the brake pedal voltage is normal, the brake valid signal VCU _ brakepadalvalidflag is 1, and if the brake pedal voltage is abnormal, the brake valid signal VCU _ brakepadalvalidflag is 0.

10. The novel electronic shift system for passenger cars of claim 1, characterized in that:

when a gear request signal of the electronic gear shifting controller is P gear, the vehicle controller sends out a logic gear signal of P gear, a motor torque command signal VCU _ FrontMotorTorque Req is 0, no power is output when the motor idles, and the combination meter displays P gear;

when a gear request signal of the electronic gear shifting controller is R gear, if a brake signal VCU _ BrakePedalValue is 1 and a brake effective signal VCU _ BrakePedalValidFlag is 1 and a motor torque command signal VCU _ FrontMotorTorque Req is more than or equal to a threshold value B, the VCU sends out a logic gear signal which is R gear, the motor reversely rotates to output power, and the combination meter displays the R gear;

if the brake signal VCU _ BrakePedalValue is 0 or the brake effective signal VCU _ BrakePedalValidFlag is 0 or the motor torque command VCU _ FrontMotorTorque Req is less than the threshold value B, the vehicle controller sends out a logic gear signal of N gear and an alarm signal, the motor does not output power during idling, the combination meter displays the N gear and the combination meter displays that the brake is required to be stepped on for gear shifting.

When a gear request signal of the electronic gear shifting controller is N gear, a VCU sends out a logic gear signal of N gear, a motor torque instruction VCU _ FrontMotorTorque Req is 0, no power is output when the motor idles, and the combination meter displays the N gear;

when a gear request signal of the electronic gear shifting controller is a D gear, if a brake signal VCU _ BrakePedalValue is 1 and a brake effective signal VCU _ BrakePedalValidFlag is 1 and a motor torque command signal VCU _ FrontMotorqueReq is less than or equal to a threshold value C, the whole vehicle controller sends out a logic gear signal which is the D gear, the motor reversely rotates to output power, and the combination meter displays the D gear;

if the brake signal VCU _ BrakePedalVallue is 0 or the brake effective signal VCU _ BrakePedalValidFlag is 0 or the motor torque command signal VCU _ FrontMotorTorque Req is greater than the threshold value C, the vehicle control unit sends out a logic gear signal of N gear and an alarm signal, the motor does not output power during idling, the combination meter displays the N gear and the combination meter displays that the brake is required to be stepped on for gear shifting; wherein the threshold B is-5 Nm and the threshold C is 5 Nm.

Technical Field

The invention relates to the technical field of automobile gear shifting, in particular to a novel electronic gear shifting system for a passenger vehicle.

Background

Along with the trend of the automobile industry towards intellectualization, sharing, electrification and networking, the electronic gear shifter is used by people more and more, and is lighter and more intelligent than a mechanical structure for gear shifting. The electronic gear shifter easily causes inconsistency of physical gears of the gear shifter and logical gears of a system, so that the gear operation of people is easy to be disordered, and the driving safety is low.

Disclosure of Invention

The invention provides a novel electronic gear shifting system for a passenger vehicle, aiming at solving the problems that the driving is unsafe and the operation is not easy to happen due to inconsistent gears of the conventional electronic gear shifter for the passenger vehicle in driving, and the like, so that the driving safety, comfort and intellectualization of the passenger vehicle are effectively improved.

A novel electronic gear shifting system for a passenger vehicle comprises a gear shifting module, a vehicle control unit, a driving motor and an electronic stability system controller, wherein the gear shifting module is communicated through a CAN bus; the gear shifting module comprises an electronic gear shifting controller, a gear indicator lamp and a P-gear electromagnetic valve;

the electronic gear shifting controller is used for sending a gear request signal to the vehicle control unit, and simultaneously controlling a gear indicator lamp to be on or flash normally and controlling a P-gear electromagnetic valve to be opened or closed;

the gear indicator is used for displaying the current gear state; the P gear electromagnetic valve is used for locking a P gear;

the vehicle control unit is used for receiving the gear request signal, sending a logic gear signal to the electronic gear-shifting controller according to the current driving state of the vehicle, and sending a brake signal and a brake validity signal to the electronic gear-shifting controller according to the received brake pedal state signal; sending an alarm signal to the combination instrument, and sending a motor torque instruction signal to the driving motor to control the driving motor to turn;

the driving motor is used for receiving a motor torque instruction signal and outputting power;

the electronic stability system controller is used for receiving wheel speed signals and sending vehicle speed signals to the whole vehicle controller and the electronic gear shifting controller through calculation;

the combination meter is used for receiving a gear request signal of the electronic gear shifting controller, displaying a physical gear and an alarm signal sent by the whole vehicle controller, reminding a user that the current physical gear is inconsistent with the logical gear through characters, and guiding the user to correctly operate and shift gears.

The invention has the beneficial effects that: the electronic gear shifting system for the passenger vehicle solves the problems of unsafe driving and difficult operation caused by inconsistent gears of users in driving, and can effectively improve the driving safety, comfort and intellectualization of the passenger vehicle by designing the control system and the method for gear shifting among the VCU, the ESC, the GSM and the combination instrument.

Drawings

FIG. 1 is a schematic block diagram of a novel electronic shift system for a passenger vehicle according to the present invention;

FIG. 2 is a flow chart of a control process of the shift indicator light;

FIG. 3 is a flow chart of a vehicle anti-theft authentication system;

FIG. 4 is a flowchart of the P range request control;

FIG. 5 is a flowchart of an N shift request control;

FIG. 6 is a flow chart of an R range request control;

fig. 7 is a flow chart of the D range request control.

Detailed Description

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Referring to fig. 1 to 7, the present embodiment is described, and a novel electronic shift system for a passenger car, referring to fig. 1, includes: the system comprises a gear shifting module, a Vehicle Control Unit (VCU), a driving motor, an electronic stability system controller (ESC) and a Controller Area Network (CAN), wherein all the systems are in communication connection through the CAN.

The gear shifting module comprises an electronic gear shifting controller (GSM), a gear indicator lamp and a P-gear electromagnetic valve;

the GSM is used for a user to send a gear request signal GSM _ GearShiftLeverPstReq, receive a VCU logic gear signal to control a gear indicator lamp to be normally on or flash, and receive a VCU braking signal, a braking validity signal and an electronic stability program ESC vehicle speed signal to control a P-gear electromagnetic valve to be opened or closed.

The gear indicator lamp is used for displaying the current gear state.

The P gear electromagnetic valve is used for locking the P gear.

The VCU is used for receiving the gear request signal and sending a logic gear signal VCU _ GearPosition, an alarm signal VCU _ ShiftChageWarning and a motor torque command VCU _ FrontMotorTorqReq to control the steering of the driving motor according to the current driving state of the vehicle; and sending a brake signal VCU _ BrakePedalValvalue and a brake validity signal VCU _ BrakePedalValidFlag according to the state of a brake pedal.

The driving motor is used for receiving a motor torque command VCU _ FrontMotorToreq and outputting power.

The ESC is used for receiving the wheel speed signal and sending a vehicle speed signal ESC _ vehicle through internal calculation.

The combination meter is used for receiving a GSM gear request signal GSM _ GearShiftLeverPstReq to display a physical gear and a VCU alarm signal VCU _ ShiftChageWarning to remind a user that a current physical gear is inconsistent with a logic gear through characters and to guide the user to operate gear shifting correctly.

The present embodiment is described with reference to fig. 2, and fig. 2 is a flow chart of the shift indicator lamp control.

In this embodiment, the electronic shift controller GSM includes any one of a pocket gear type, a key type, or a knob type; the electronic gear shifter GSM at least comprises a parking gear P, a reverse gear R, a neutral gear N and a driving gear D; the gear indicator lamp comprises a P gear indicator lamp, an R gear indicator lamp, an N gear indicator lamp and a D gear indicator lamp.

The electronic gear shifting controller GSM sends gear request signals through the CAN bus and receives VCU logic gear signals, and the gear indicator lamp is controlled to be normally on or twinkle by judging whether the two signals are consistent.

a. When the gear request signal is inconsistent with the logic gear signal, the gear indicator lamp flickers;

b. when the gear request signal is consistent with the logic gear signal, the gear indicator lamp is always on.

The present embodiment is described with reference to fig. 3, and fig. 3 is a control flowchart of the P-range solenoid valve.

And the GSM receives a VCU braking signal, a braking validity signal and an electronic stability program ESC vehicle speed signal, controls the P-gear electromagnetic valve to be locked or unlocked according to the states of the three signals, and whether the electronic gear shifting gear can be switched or not.

a. When the brake signal VCU _ brakepadalvalue is 1 and the brake validity signal VCU _ brakepadalvalidflag is 1, the P-shift electromagnetic valve is unlocked, and the electronic shift gear can be switched;

b. when the brake signal VCU _ BrakePedalValvalue is 0 or the brake validity signal VCU _ BrakePedalValidFlag is 0, the P-gear electromagnetic valve is locked, and the electronic gear-shifting gear can not be switched;

c. when the vehicle speed signal ESC _ vehicle is larger than or equal to a threshold value A, the P-gear electromagnetic valve is unlocked, and if the vehicle speed signal ESC _ vehicle is smaller than the threshold value A, the P-gear electromagnetic valve is locked; the step is used for allowing the gear to be switched to other gears from the P gear after the gear enters the P gear when the vehicle speed signal is larger than or equal to the threshold A under the vehicle running state, namely the electronic gear shifting gear can be switched.

Wherein the threshold A is a calibrated value of 3 km/h.

Fig. 4 is a flow chart of a P range request control, fig. 5 is a flow chart of an N range request control, fig. 6 is a flow chart of an R range request control, and fig. 7 is a flow chart of a D range request control.

The VCU receives gear request signals through the CAN bus, receives brake pedal signals through a hard wire, and sends logic gear signals, alarm signals, motor torque instructions, brake signals and brake validity signals according to the current driving state.

The motor torque instruction controls the motor to turn, forward rotation corresponds to a driving gear D, reverse rotation corresponds to a reverse gear R, and idling corresponds to a parking gear P and a neutral gear N.

When the brake pedal is pressed, the brake signal VCU _ brakepadaldalvalue is 1, if the brake pedal voltage is normal, the brake valid signal VCU _ brakepadaldalvalidflag is 1, and if the brake pedal voltage is abnormal, the brake valid signal VCU _ brakepadaldalvalidflag is 0.

a. When a gear request signal of the GSM is P gear, a VCU sends out a logic gear signal of P gear, a motor torque instruction VCU _ FrontMotorTorqReq is 0, no power is output when the motor idles, and a combination meter displays the P gear;

b. when a gear request signal of the GSM is R gear, if a brake signal VCU _ BrakePedalValue is 1 and a brake validity signal VCU _ BrakePedalValidFlag is 1 and a motor torque command VCU _ FrontMotorTorq is more than or equal to a threshold B, the VCU sends out a logic gear signal to be R gear, the motor reversely rotates to output power, and the combination meter displays the R gear; if the brake signal VCU _ BrakePedalVallue is 0 or the brake validity signal VCU _ BrakePedalValidFlag is 0 or the motor torque command VCU _ FrontMotorTorque Req is less than the threshold value B, the VCU sends out a logic gear signal of N gear and an alarm signal, the motor has no power output when idling, the combination meter displays R gear and the text displays 'please step on the brake to shift gears'.

c. When a gear request signal of the GSM is N gear, a VCU sends out a logic gear signal of N gear, a motor torque instruction VCU _ FrontMotorTorqReq is 0, no power is output when the motor idles, and the combination meter displays the N gear;

d. when a gear request signal of the GSM is a D gear, if a brake signal VCU _ BrakePedalValue is 1 and a brake validity signal VCU _ BrakePedalValidFlag is 1 and a motor torque command VCU _ FrontMotorTorq is less than or equal to a threshold value C, the VCU sends out a logic gear signal to be the D gear, the motor reversely rotates to output power, and a combination meter displays the D gear; if the brake signal VCU _ BrakePedalVallue is 0 or the brake validity signal VCU _ BrakePedalValidFlag is 0 or the motor torque command VCU _ FrontMotorTorque Req is greater than the threshold value C, the VCU sends out a logic gear signal of N gear and an alarm signal, the motor has no power output when idling, the combination meter displays D gear and the text displays 'please step on the brake to shift gears'.

Wherein, the threshold value is a calibration value, B is-5 Nm, and C is 5 Nm.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.