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Dual power system and control method for electric vehicle

An electric vehicle and dual-power technology, which is applied in the direction of electric vehicles, electric power devices, control drives, etc., can solve the problems of inability to balance power performance and overall efficiency, and achieve the effect of easy mode switching, simple structure, and improved overall efficiency

Active Publication Date: 2018-04-24
TOP GEAR POWERTRAIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a dual power system for electric vehicles, which is used to solve the problem that the power performance and overall efficiency cannot be balanced in the existing dual motor power system

Method used

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  • Dual power system and control method for electric vehicle
  • Dual power system and control method for electric vehicle
  • Dual power system and control method for electric vehicle

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Embodiment Construction

[0044] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0045] see figure 2 The dual power system of the electric vehicle in the embodiment of the present invention includes an auxiliary motor 1, a ring gear brake 20, a first clutch 3, a second clutch 2, a main drive motor 4, a planetary gear train 5, an Oldham joint 6, a reducer 7 and Drive wheels 8, the auxiliary motor 1 includes an auxiliary motor controller 9, and the main drive motor includes a drive motor controller. Described planetary gear train 5 comprises sun gear 54, planetary gear 52, ring gear 51 and the planet carrier 53 that is connected to each planetary gear, wherein, the number of teeth of sun gear is Zs, the number of teeth of ring gear is Zr, and k=Zr / Zs is The characteristic parameters of the planetary gear train.

[004...

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PUM

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Abstract

The invention discloses a dual power system of an electric vehicle, which comprises a main drive motor, an auxiliary motor, a planetary gear train, a first clutch and a second clutch; the rotating shaft of the main drive motor is connected with the sun gear of the planetary gear train, and the The planet carrier is the power output end, the active part of the clutch is connected to the ring gear of the planetary gear train, the driven part of the clutch is connected to the sun gear of the planetary gear train; the rotating shaft of the auxiliary motor is connected to the ring gear of the planetary gear train, and the gear A ring gear brake is arranged on the ring. The invention also discloses a control method for the dual power system of the electric vehicle. The dual power system of the electric vehicle has a simple structure and can realize torque coupling and rotational speed coupling driving modes.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an electric vehicle dual power system and a control method. Background technique [0002] Different from traditional fuel vehicles, the power system structure diagram of conventional centralized drive pure electric vehicles is as follows: figure 1 shown. The drive motor drives the vehicle to run through the deceleration and torque increase of the transmission or reducer, and the motor controller controls the different speeds and torques of the motor to meet the driving power requirements of the vehicle. Due to the use of a single motor drive, the motor should have a wide range of speed regulation, high torque output at low speed and certain power reserve, high efficiency and high reliability at high speed. Obviously, such a high-speed motor is too difficult to manufacture, and the motor cannot work with high efficiency under various working conditions, resulting in low overall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/32B60K17/04B60K1/02
Inventor 余捷
Owner TOP GEAR POWERTRAIN TECH CO LTD
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