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Method and system for power driving of electric automobile, and electric automobile

An electric vehicle and power-driven technology, applied in the field of vehicles, can solve problems such as narrow power output range, and achieve the effects of solving power consumption, reducing difficulty, and increasing

Inactive Publication Date: 2017-12-22
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present disclosure is to provide a power driving method and system for an electric vehicle and the electric vehicle, which are used to solve problems such as the narrow power output range of the electric vehicle

Method used

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  • Method and system for power driving of electric automobile, and electric automobile
  • Method and system for power driving of electric automobile, and electric automobile
  • Method and system for power driving of electric automobile, and electric automobile

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Embodiment Construction

[0051] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0052] figure 2 It is a schematic diagram of an implementation environment shown according to an exemplary embodiment. Such as figure 2 As shown, the power driving method of the present disclosure is applied to an electric vehicle 20, and the electric vehicle 20 may be a pure electric vehicle or a hybrid vehicle. Optionally, the power driving method of the present disclosure is applied to pure electric vehicles.

[0053] Such as figure 2 As shown, the electric vehicle 20 includes a low-speed high-torque motor 201 , a high-speed low-torque motor 211 , a first clutch 203 , a second clutch 213 , a first speed reducer 202 and a second speed reducer 212 . ...

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Abstract

The invention discloses a method and system for power driving of an electric automobile, and the electric automobile. The electric automobile comprises a low-rotation-speed and high-torque motor, a high-rotation-speed and low-torque motor, a first reducer and a second reducer, wherein the low-rotation-speed and high-torque motor is connected to the first reducer by a first clutch, and the high-rotation-speed and low-torque motor is connected to the second reducer by the second clutch. The method for the power driving comprises the steps that a current driving working condition of the electric automobile is determined; and working states of the first clutch and the second clutch are controlled, so power output of the electric automobile is matched with the current driving working condition. According to the method, system and automobile disclosed by the invention, the clutches are disposed between the motors and the reducers, so an overload protection function is provided; difficulty of integration technologies of the motors and the reducers is reduced; the motors and the reducers can be dismounted and repaired separately; and problems that power cannot be interrupted and motor replacement operations are cumbersome under extreme working conditions of the related electric automobile can be solved.

Description

technical field [0001] The present disclosure relates to the technical field of vehicles, and in particular, relates to a power driving method and system for an electric vehicle and the electric vehicle. Background technique [0002] The motor and reducer in the electric vehicle power system are generally directly connected by internal and external splines, without overload protection function. When extreme working conditions occur, such as when the motor is out of control, the power cannot be interrupted. Moreover, due to the high precision required for the fit of the internal and external splines and the high process requirements during assembly, when replacing the motor, the entire power assembly needs to be completely disassembled before replacement. [0003] When the electric vehicle is a four-wheel drive electric vehicle, the front-drive motor and the rear-drive motor generally use motors with the same characteristics, such as low-speed high-torque motors or high-speed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60K1/02
CPCB60K1/02B60L15/2054B60L2240/12B60L2240/421B60L2260/26B60L2260/28Y02T10/72
Inventor 宋宗南蔡方洁
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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