Transmission system of pure electric vehicle traction type trailer

Abstract

The utility model discloses a transmission system of a pure electric vehicle traction type trailer. The transmission system comprises a motor controller module, a planetary gear mechanism control module, a multimedia module, a driving motor and a planetary gear mechanism, the multimedia module, the motor controller module and the planetary gear controller module are in communication connection; the driving motor is connected with the planetary gear mechanism; the planetary gear mechanism is also connected with the speed reducer and the differential mechanism; the driving wheel transmits power to the planetary gear mechanism through the differential mechanism and the speed reducer to drive the planetary gear mechanism to rotate automatically. A power transmission path is cut off in the trailer traction process, and high-voltage system components of the whole vehicle are protected; the after-sale maintenance cost of the vehicle is reduced; and during normal driving, the vehicle dynamic property is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile technical field, concretely is a kind of transmission system of pure electric vehicle traction mode trailer. BACKGROUND

[0002] Now general pure electric vehicle has no air gap, when using traction mode trailer, wheel end will be connected directly through transmission mechanism and motor, when wheel rotates, motor can rotate together with it.And, most electric vehicles on the market adopt permanent magnet synchronous motor, according to Faraday's law of electromagnetic induction, when conductor makes the movement of cutting magnetic induction line in magnetic field, current will be generated in conductor, induced electromotive force is generated, and the induced electromotive force will damage motor control and other high-voltage system components.So when vehicle needs trailer, only flatbed trailer can be used, and the cost is high, and the operation requirement is high.

[0003] Therefore, a kind of transmission system of pure electric vehicle traction mode trailer is provided. SUMMARY

[0004] The utility model aims at providing a kind of transmission system of pure electric vehicle traction mode trailer and control method to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of transmission system of pure electric vehicle traction mode trailer, including motor controller module, planetary gear mechanism control module, multimedia module, drive motor, planetary gear mechanism;

[0007] Multimedia module, motor controller module, planetary gear controller module are connected by communication;

[0008] Drive motor is connected with planetary gear mechanism, and planetary gear mechanism is also connected with speed reducer and differential;

[0009] Driving wheel passes through differential, speed reducer and transmits power to planetary gear mechanism, and drives planetary gear mechanism to spin.

[0010] Further, multimedia module, motor controller module, planetary gear controller module are connected by CAN communication.

[0011] Further, drive motor transmits driving force to planetary gear mechanism by output shaft.

[0012] Further, planetary gear mechanism transmits power to driving wheel by speed reducer and differential.

[0013] Compared with prior art, the utility model has the advantages that:

[0014] The power transmission path is cut off during the towing process, and the high-voltage system components of the whole vehicle are protected.

[0015] The vehicle maintenance cost after sale is reduced.

[0016] The power performance of the vehicle is enhanced during normal driving. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A system operation logic diagram of the utility model;

[0018] Figure 2 A module composition schematic diagram of the utility model. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0020] Embodiment 1:

[0021] Please refer to Figure 2 The utility model provides a technical scheme:

[0022] A kind of traction mode tow vehicle of pure electric vehicle, including motor controller module, planetary gear mechanism control module, multimedia module, drive motor, planetary gear mechanism;

[0023] Motor controller module: the real-time state of motor is monitored, receives the control instruction of whole vehicle, controls the running state of motor;

[0024] Planetary gear mechanism control module: receives whole vehicle instruction, responds to the demand state of whole vehicle, controls the running and locking of planetary gear mechanism;

[0025] Multimedia module: receiving the control instruction of user, display control interface, facilitate user operation, and send user selected function to whole vehicle in the form of instruction;

[0026] Drive motor: receiving drive current from motor controller, providing driving force for vehicle driving, driving vehicle driving;

[0027] Planetary gear mechanism: linkage drive motor and main reducer, transmission driving force, when towing, for cutting off the power transmission of drive motor and main reducer.

[0028] Multimedia module, motor controller module, planetary gear controller module are connected in the form of CAN communication, and instruction is sent and received;

[0029] The driving motor is mechanically and hard connected with the planetary gear mechanism, the planetary gear mechanism is also mechanically and hard connected with the speed reducer and the differential, the driving motor transmits driving force to the planetary gear mechanism through the output shaft, and the planetary gear mechanism transmits power to the driving wheel through the speed reducer and the differential;

[0030] When the trailer is towed, the driving wheel transmits power to the planetary gear mechanism through the differential and the speed reducer, at this time, the planetary gear mechanism rotates by itself, and the power transmission to the driving motor is blocked.

[0031] Embodiment 2:

[0032] A control method of a transmission system of a pure electric vehicle towing mode trailer, comprising the following steps:

[0033] 1) When the vehicle is normally driven, the planetary gear control module locks the outer gear ring in the planetary gear mechanism, the driving motor transmits power to the sun gear of the planetary gear mechanism, the sun gear drives the planetary carrier to rotate through the planetary gear, and the power is transmitted to the differential through the planetary carrier to the driving force, so that the vehicle can be normally driven;

[0034] 2) When the vehicle fails or needs to be towed under other conditions, the user inputs the towing instruction through the multimedia module, and the multimedia module sends the towing instruction to the CAN bus;

[0035] 3) The motor control module receives the towing instruction, at this time, the speed of the driving motor is determined, when the speed is not zero, the motor control module sends the no-towing instruction to the multimedia module, and the user stops the towing operation; when the speed is zero, the motor control module sends the instruction to the planetary gear control module to allow the towing instruction;

[0036] 4) When the planetary gear mechanism control module receives the towing instruction of the multimedia module and the allow-towing instruction of the motor control module at the same time, the planetary gear control module executes the action of locking the sun gear and releasing the outer gear ring, and the towing can be started, at this time, the planetary carrier of the planetary gear mechanism is the input shaft, the planetary gear rotates around the outer gear ring, and the sun gear is fixed and cannot drive the driving motor to rotate.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A drive system of a pure electric vehicle traction mode trailer, characterized in that: it comprises a motor controller module, a planetary gear mechanism control module, a multimedia module, a drive motor and a planetary gear mechanism; the multimedia module, the motor controller module and the planetary gear controller module are communicatively connected; the drive motor is connected with the planetary gear mechanism, and the planetary gear mechanism is also connected with a speed reducer and a differential; the drive wheel transmits power to the planetary gear mechanism through the differential and the speed reducer, and drives the planetary gear mechanism to rotate by itself.

2. A drive system for a pure electric vehicle towing mode trailer according to claim 1, characterized in that: the multimedia module, the motor controller module and the planetary gear controller module are connected through CAN communication.

3. The drive system of a pure electric vehicle towing mode trailer according to claim 1, characterized in that: the drive motor transmits driving force to the planetary gear mechanism through an output shaft.

4. The drive system of a pure electric vehicle towing mode trailer according to claim 1, characterized in that: the planetary gear mechanism transmits power to the drive wheel through the speed reducer and the differential.

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