CN211009852U

CN211009852U - Gear shifting device of brushless motor cam angle sensor assembly

Info

Publication number: CN211009852U
Application number: CN201921765144.0U
Authority: CN
Inventors: 李鹏辉; 王启明; 周飞; 罗鹏
Original assignee: Zhejiang Daxing Technology Co ltd
Current assignee: Zhejiang Daxing Technology Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-07-14
Anticipated expiration: 2029-10-21

Abstract

The utility model provides a gear shifting device of a cam angle sensor component of a brushless motor, which comprises a TCU module, an MCU module, a VCU module, a driving motor, a cam angle sensor and a gear shifting motor, wherein a driver operates a gear shifting position to send out gear shifting will, the TCU module combines the current MCU module input rotating speed to judge whether the gear shifting logic is met or not, the VCU module sends an accelerating signal or a decelerating signal to the TCU module according to the instruction of the driver, the TCU module sends a synchronous indicating signal to the MCU module, the MCU module enables the driving motor to increase the rotating speed or decrease the rotating speed to a set value and replies a synchronous finishing signal of the TCU module, the TCU module sends an instruction of the motor work to work the gear shifting motor, the cam angle sensor feeds back the cam angle to the TCU module in real time, when the TCU module judges that the cam angle position is met with the gear shifting position, and then the speed change completion information is fed back to the VCU module to inform the driver.

Description

Gear shifting device of brushless motor cam angle sensor assembly

Technical Field

The utility model relates to a new forms of energy electric automobile gearshift especially relates to a gearshift of brushless motor cam angle sensor subassembly.

Background

With the continuous rise of oil price and the attention of people to the problem of environmental pollution, new energy electric vehicles become an important direction for the research and development of the current vehicles due to the characteristics of safety and environmental protection. Except environmental protection, new forms of energy electric automobile compares with the fuel oil car, and electric automobile handles portably, simple structure, and transmission part is less, and need not change machine oil, oil pump, also has cooling water etc. and is less in the aspect of later stage maintenance cost.

Compared with a fuel engine, the output torque of the motor is more fixed, and the torque and the rotating speed of the fuel engine have a great relation, so that the electric vehicle can finish the processes of starting, accelerating and running at high speed without complicated gear shifting of a speed changer. However, in the driving process of the new energy electric vehicle without the transmission, the electric energy is not fully utilized, so that energy waste is caused, and the efficiency is reduced. In the process of climbing, the new energy electric automobile also can cause the situation of insufficient climbing force due to torque limitation. And when starting, the motor fixes the torque, so that the electric automobile cannot start faster, and for the purpose that the electric efficiency of the new energy electric automobile is higher, a two-gear transmission appears, so that the new energy electric automobile is more flexible. The gear shifting device in the two-gear transmission can be engaged in proper gears according to different torques required by different vehicle conditions, so that the performance of the new energy electric vehicle is greatly improved.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a brushless motor cam angle sensor module's gearshift can provide electric automobile and realize keeping off the speed change, is convenient for be suitable for different road conditions for electric automobile performance promotes by a wide margin.

The technical scheme of the utility model is a gearshift of brushless motor cam angle sensor subassembly, including TCU module, MCU module, VCU module, driving motor, cam angle sensor and gear shifting motor, cam angle sensor transmits the original point signal, cam angle information to TCU module, TCU module feeds back information to VCU module and reaches and give the driver, and the driver operates the position of shifting, sends the intention of shifting and combines current MCU module input rotational speed to judge whether accord with the logic of shifting, VCU module sends acceleration signal or deceleration signal to TCU module according to driver's instruction, TCU module issues the synchronous instruction signal to MCU module, MCU module makes driving motor promote the rotational speed or reduce the rotational speed to the setting value to reply TCU module synchronous signal of accomplishing, TCU module issues the instruction of motor work and gives gear shifting motor work, the cam angle sensor feeds the cam angle back to the TCU module in real time, when the TCU module judges that the cam angle position accords with the gear shifting position, the gear shifting motor stops working, and then speed change completion information is fed back to the VCU module to be reported to a driver.

Preferably, the gear shifting motor is a 12V brushless motor.

Preferably, the cam angle sensor adopts a three-axis position sensing chip to feed back the current gear data in a PWM output mode so as to facilitate the interaction of user information.

The utility model discloses can hang into suitable gear according to the required moment of torsion difference of the vehicle condition of difference, the good reliability, stability is good, energy-efficient for new forms of energy electric automobile performance promotion by a wide margin.

Drawings

Fig. 1 is a schematic structural view of the present invention;

wherein: 1-TCU module; 2-MCU module; 3-VCU module; 4, driving a motor; 5-a cam angle sensor; 6-a gear shifting motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, when the driver performs a gear shift, the cam angle sensor feeds back an origin signal to the TCU module, the TCU determines the PWM input by the cam angle sensor to determine the current gear information, and the information is fed back to the VCU for the driver. When the vehicle needs to shift gears, a driver operates a gear shifting position and sends out a gear shifting desire, and the TCU combines with the current MCU input rotating speed to judge whether the gear shifting logic is met or not (for example, when the vehicle runs, the gear is forcibly locked in order to avoid suddenly entering a P gear, when the absolute value of the rotating speed of a motor is larger than 350rmp, the vehicle already runs, the P gear is forbidden to be engaged, information is fed back to a VCU, and then the VCU informs the driver of fault information, and when the absolute value of the rotating speed of the motor is smaller than or equal to 350rmp, the vehicle is allowed to be engaged in the P gear in a low-speed. After the success of the judgment, the TCU issues an instruction to enable the motor to work, so that an output shaft of a gear shifting motor (a brushless motor) starts to rotate to drive a transmission gear part in a two-gear transmission to carry out gear shifting work, a cam angle sensor synchronously detects the angle position information of the cam and feeds back the angle position information to the TCU, when the TCU judges that the angle position of the cam accords with the gear shifting position, the motor stops working, and the gear shifting success information is fed back to the VCU to be transmitted to a driver.

When the speed change gear shift is automatically executed, when a driver controls a pedal to send an acceleration intention, the vehicle speed is increased, and the automatic speed change gear shift (1-2 gear) is carried out: the acceleration will be transmitted to the TCU through the VCU, the TCU issues a synchronous indication signal to the MCU, the MCU enables the driving motor to increase the rotating speed to enable the vehicle speed to reach 50km/h (the vehicle speed is calculated by combining the current gear transmission ratio with the input rotating speed), and after the rotating speed is increased, a TCU synchronous completion signal is replied. The TCU issues an instruction to enable the motor to work (the gear shifting motor is DC brushless), the cam angle sensor feeds back the cam angle of the TCU in real time, when the TCU judges that the cam angle position accords with the gear shifting position, the motor stops working, and then speed change completion information is fed back to the VCU.

When the driver controls the pedal to send out a deceleration will, the vehicle speed is reduced, and the automatic speed change gear shifting (2-1 gear) is carried out: the VCU is used for transmitting the deceleration will to the TCU, the TCU issues a synchronous indication signal to the MCU, the MCU enables the driving motor to reduce the rotating speed to enable the vehicle speed to reach 40km/h (the vehicle speed is calculated by combining the current gear transmission ratio with the input rotating speed), and after the rotating speed reduction is finished, a TCU synchronous finishing signal is replied. The TCU issues an instruction to enable the motor to work (the gear shifting motor is DC brushless), the cam angle sensor feeds back the cam angle of the TCU in real time, when the TCU judges that the cam angle position accords with the gear shifting position, the motor stops working, and then speed change completion information is fed back to the VCU.

The utility model selects the 12V brushless motor as the output transmission, and the brushless motor has less maintenance period, high efficiency and low noise in the operation process because of no brush commutator; adopt brushless motor as the output of shifting gears in keeping off two derailleur gearshift, it possesses efficient energy-conservation, and the reliability is high, and stability is good, resistant jolting, noise low life-span advantage such as long. Therefore, the gear shifting output part of the gear shifting device is more reliable and has low failure degree.

A three-axis position sensing chip adopted by the cam angle sensor can feed back the current gear data in a PWM (pulse-width modulation) output mode so as to facilitate the interaction of user information, and the formed component is more reliable when used for a gear shifting device. The cam angle sensor detects a magnetic field and its change, and can be used in various fields related to the magnetic field. Hall elements have many advantages, their structure is small, light, long-lived, easy to install, the power consumption is little, the frequency is high. The sensor is a magnetic sensor for outputting PWM analog signals, and the output voltage linearly changes along with the input magnetic density. The voltage output of the sensor IC will accurately track the change in magnetic flux density. They can reflect mechanical events in a magnetically driven manner. The two-gear speed changer is used on a two-gear speed changer, and the installation position of the two-gear speed changer is right opposite to the position where a transmission gear contains a magnet. And the change of the magnetic field generated by the rotation of the iron on the gear is monitored in real time and fed back to the TCU in a PWM analog output mode.

The above, it is only the preferred embodiment of the present invention, not to make any restriction on the utility model, all the bases the technical principle of the present invention is to any simple modification, equivalent change or modification made by the above embodiments, still belong to the technical solution scope of the present invention.

Claims

1. A gear shifting device of a brushless motor cam angle sensor assembly is characterized in that: the gear shifting device comprises a TCU module (1), an MCU module (2), a VCU module (3), a driving motor (4), a cam angle sensor (5) and a gear shifting motor (6), wherein the cam angle sensor (5) transmits an original point signal and cam angle information to the TCU module (1), the TCU module (1) feeds back the information to the VCU module (3) to be transmitted to a driver, the driver operates a gear shifting position to send out gear shifting willingness and judges whether the gear shifting willingness accords with gear shifting logic or not by combining the TCU module (1) with the input rotating speed of the current MCU module (2), the VCU module (3) sends out an accelerating signal or a decelerating signal to the TCU module (1) according to the indication of the driver, the TCU module (1) sends out a synchronous indication signal to the MCU module (2), the MCU module (2) enables the driving motor (4) to increase the rotating speed or reduce the rotating speed to a set value, and returns a synchronous completion signal, the TCU module (1) gives the instruction of motor work and gives shift motor (6) work, cam angle sensor (5) are real-time with cam angle feedback TCU module (1), judge that cam angle position accords with the position of shifting when TCU module (1), stop shift motor (6) work, accomplish information feedback VCU module (3) with the variable speed again and give the driver.

2. The gear shifting apparatus of a brushless motor cam angle sensor assembly of claim 1, wherein: the gear shifting motor (6) is a 12V brushless motor.

3. The gear shifting apparatus of a brushless motor cam angle sensor assembly of claim 1, wherein: the cam angle sensor (5) adopts a three-axis position sensing chip to feed back the current gear data in a PWM output mode so as to facilitate the interaction of user information.