CN205092726U - Electric motor car motor of bi -motor structure - Google Patents

Abstract

The utility model relates to an electric motor car motor of bi -motor structure, including high speed motor, slowspeed machine and reduction gears, slowspeed machine and high speed motor distribute in the both sides of reduction gears, the both ends of inputing the tooth axle at the reduction gears are connected respectively to the output shaft of high speed motor and slowspeed machine, high speed motor's rotor directness and output shaft fixed, the rotor of slowspeed machine pass through one way clutch and output shaft, high speed motor and the output shaft of slowspeed machine all be connected with the input of reduction gears. Adopt high speed motor and slowspeed machine to cooperate, the height motor moves jointly when starting, accelerateing and climbing to increase output and moment of torsion, go at high speed then by the single motor drive of high speed motor, and the slowspeed machine reduces the power consumptive efficiency that promotes the motor through single clutch and output shaft and reduction gears separation, does not influence the normal operating of device.

Description

Electric vehicle motor with dual-motor structure

technical field

The utility model relates to motor technology, in particular to an electric vehicle motor with a double motor structure.

Background technique

At present, the general electric vehicles are driven by one motor. At present, there are mainly high-speed motors with low torque at low speeds, while low-speed motors have limited driving speed, high energy consumption and no energy saving. In order to solve this problem, the current common practice is Adopt gearbox to adjust the output torque again, as the announcement is CN103075472A discloses a kind of electric vehicle gearbox, including box body, is provided with motor input shaft, speed reduction mechanism and power output mechanism inside the box body, it is characterized in that: in the described power A set of shift pinion is arranged between the output mechanism and the deceleration mechanism, and a synchronization mechanism is arranged beside the shift gear shaft. The synchronization mechanism is connected with the shift gear shaft through claws. Connect the device; the gear shift pinion includes a spline shaft, an output gear, a high-speed gear and a low-speed gear, the output gear, the high-speed gear and the low-speed gear are coaxially arranged on the spline shaft, and the output gear is clamped on the spline shaft The high-speed gear and the low-speed gear are both sleeved on the spline shaft through bearings, and the high-speed gear and the low-speed gear are respectively meshed with the high-speed output gear and low-speed output gear of the reduction mechanism. There are also two driving teeth keys and a driven teeth key between the gear and the low-speed gear. The two driving teeth keys are fixedly connected to the sides of the high-speed gear and the low-speed gear respectively, and the driven teeth keys are located between the two driving teeth keys. Between, the driven tooth key and the spline shaft are clamped or integrated, and the driving tooth key and the driven tooth key are sleeved on the clutch ring, and the inside of the clutch ring is provided with clutch teeth that cooperate with the driving tooth key and the driven tooth key. An annular groove is arranged on the outer edge of the clutch ring, and the claws on the synchronous mechanism are engaged in the annular groove.

Although this kind of electric vehicle gearbox realizes the switching of motor torque, due to its complex structure and heavy weight, it increases the load on the motor.

Utility model content

The purpose of this utility model is to provide an electric vehicle motor with a dual-motor structure, which uses a high-speed motor and a low-speed motor to cooperate, and the high and low motors work together when starting, accelerating and climbing to increase output power and torque; The high-speed motor is driven by a single motor, and the low-speed motor is separated from the output shaft and the reduction mechanism through a single clutch, which reduces power consumption and improves the efficiency of the motor without affecting the normal operation of the device. Monitoring, control the working state of the two motors according to the running state of the motor, and realize the stepless switching of the power output. It has a reasonable structure, easy operation, and greatly increases the comfort.

In order to achieve the above purpose, the following technical solutions are adopted:

An electric vehicle motor with a dual-motor structure is characterized in that it includes a high-speed motor, a low-speed motor and a speed reduction mechanism, the low-speed motor and the high-speed motor are distributed on both sides of the speed reduction mechanism, and the output shafts of the high-speed motor and the low-speed motor are respectively connected At both ends of the input gear shaft of the reduction mechanism, the rotor of the high-speed motor is directly connected to the output shaft, the rotor of the low-speed motor is connected to the output shaft through a one-way clutch, and the output of the high-speed motor and the low-speed motor The shafts are all connected with the input end of the reduction mechanism.

The outer sides of the low-speed motor and the high-speed motor housing are provided with end covers, and the center of the end cover is provided with a concave accommodation chamber, and a gap is opened on the side of the accommodation chamber, and the Hall element is fixed in the accommodation chamber , the Hall sensor of the Hall element passes through the gap from the gap to correspond to the rotor position of the motor.

The utility model will work together through the high-speed motor and the low-speed motor. When starting, accelerating or climbing, the double motors work at the same time to increase the output power and torque. Electricity increases the cruising distance. Under the control of the controller of the motor, the utility model can automatically switch according to the road conditions and driving conditions, and realize the stepless transformation of power output. It has reasonable structure, easy operation, and greatly increases comfort.

Description of drawings

Fig. 1 is the structural representation of two motor both sides distributions of the utility model;

Fig. 2 is a schematic diagram of the internal structure of two motors distributed on both sides of the utility model.

detailed description

As shown in Figure 1-2, an electric vehicle motor with a dual-motor structure includes a high-speed motor 1, a low-speed motor 2 and a reduction mechanism 3, and the low-speed motor 2 and high-speed motor 1 are distributed on both sides of the reduction mechanism 3, The output shafts of the high-speed motor 1 and the low-speed motor 2 are respectively connected to the two ends of the input gear shaft 31 of the reduction mechanism, the rotor of the high-speed motor 1 is directly connected with the output shaft, and the rotor of the low-speed motor 2 is connected through a one-way clutch 5 is connected to the output shaft, and the outer sides of the housings of the low-speed motor 2 and the high-speed motor 1 are provided with an end cover 6, and the center of the end cover 6 is provided with a concave accommodation chamber 61, and the side of the accommodation chamber 61 is provided with A gap 62 is used to fix the Hall element in the accommodation cavity 61 , and the Hall sensor of the Hall element passes through the gap to correspond to the position of the rotor of the motor.

The low-speed motor has the characteristics of low speed and high torque, while the high-speed motor has the characteristics of high speed and low torque. When running at high speed, the high-speed motor consumes less power and is fast, which can increase the cruising range. However, the torque of the high-speed motor is insufficient when starting, accelerating and climbing. It is difficult to start, and the intervention of the low-speed motor just overcomes these shortcomings of the high-speed motor. The low-speed motor is separated from the output shaft through the one-way clutch to avoid affecting the output of the high-speed motor when it is stationary. The utility model is realized under the control of the motor controller. The stepless switching of power output has the advantages of reasonable structure, easy operation and greatly increased comfort.

The symmetrical distribution of high and low speed motors on both sides is mainly for the needs of some large power or the installation position of the motor. It is conducive to the balance of both sides, and is conducive to heat dissipation and installation of the motor.

In addition, the utility model arranges the Hall element in the accommodation cavity at the center of the end cover, and the Hall sensor of the Hall element enters the interior of the motor from the side gap. This structure facilitates the replacement of the Hall element.

Claims (2)

1. the electric vehicle motor of a bi-motor structure, it is characterized in that: comprise high-speed electric expreess locomotive, slowspeed machine and reducing gear, described slowspeed machine and high-speed electric expreess locomotive are distributed in the both sides of reducing gear, the output shaft of high-speed electric expreess locomotive and slowspeed machine is connected to the two ends of reducing gear input tooth axle, the rotor of described high-speed electric expreess locomotive directly and output shaft fixed connection, the rotor of described slowspeed machine is connected with output shaft by one-way clutch, and described high-speed electric expreess locomotive is all connected with the input of reducing gear with the output shaft of slowspeed machine.

2. the electric vehicle motor of a kind of bi-motor structure as claimed in claim 1, it is characterized in that: the outside of described slowspeed machine and high-speed electric expreess locomotive housing all arranges end cap, the center of end cap is provided with the containing cavity of indent, the sidepiece of containing cavity has a breach, containing cavity internal fixtion Hall element, the Hall element of Hall element is corresponding with the rotor-position of motor through breach from indentation, there.